| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123048000 | Piston in head adjusted | 8 |
| 20090114194 | Variable compression engine with variable inlet valve timing - An apparatus for providing two features that improve fuel economy of four stroke internal combustion engines. The first is the provision of a compression ratio which is higher than normal when the engine is operating at light load; and which varies from very high at idling, down to normal at full power. This is effected by a movable piston associated with the inlet valve and connected to the throttle. The second is the provision of variable timing as well as a variable amount of opening of the inlet valve, such that at idle, the valve opens at top center of the main piston, opens only a fraction of its full lift, and closes about 70° crankshaft past top center. As the throttle is opened, the inlet valve opens farther at each open excursion to create as little flow resistance as possible to the inlet draw. At the middle of its open excursion during each valve actuation it moves in the same direction as the crankshaft enough that as the open duration becomes greater, the valve always begins to open as the main piston starts its inlet stroke, but closes later. Finally, at full power, the inlet valve begins to open slightly before the main piston comes to top center, opens fully, and closes somewhat after the main piston has reached bottom center and has started the compression stroke. | 05-07-2009 |
| 20090266339 | INTERNAL COMBUSTION ENGINE - An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head. Facing pistons also halve the stroke that would be required for one piston to provide the same compression ratio, and the engine can thus be run at higher revolutions per minute and produce more power. An internal sleeve valve is provided for space and other considerations. A combustion chamber size-varying mechanism allows for adjustment of the minimum size of an internal volume to increase efficiency at partial-power operation. Variable intake valve operation is used to control engine power. | 10-29-2009 |
| 20100163003 | ELECTROHYDRAULIC DEVICE FOR CLOSED-LOOP DRIVING THE CONTROL JACK OF A VARIABLE COMPRESSION RATIO ENGINE - An electrohydraulic device for controlling the compression ratio of a variable compression-ratio engine, includes at least one dual-flow electrovalve ( | 07-01-2010 |
| 20100282216 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - Provided is a spark ignition type internal combustion engine comprising a variable compression ratio mechanism (A) capable of changing a mechanical compression ratio, and a variable valve timing mechanism (B) capable of controlling the closing timing of an intake valve. At an engine low-load running time, the mechanical compression ratio is made so higher than that at an engine high-load running time that the expansion ratio may be 20 or higher. In case the vacuum in an engine intake passage is lower than the required vacuum, the opening of a throttle valve ( | 11-11-2010 |
| 20100282217 | VCR UNIVERSAL DRIVE - An internal combustion engine with a variable compression ratio is provided. The engine can have a crankshaft that is pivotably supported, a flywheel fixed on the crankshaft, and a connection shaft that is arranged between the crankshaft and an input shaft of a shift transmission. | 11-11-2010 |
| 20100294244 | METHOD AND SYSTEM OF CONTINUOUS CONTROL OF THE POSITION OF AN ACTUATOR FOR CHANGING THE COMPRESSION RATIO OF A COMBUSTION ENGINE - A control system that allows continuous adjustment of a position of an actuator jack used to change compression rate of a heat engine, with mechanical-type regulation. A source of pressurised fluid is linked to a circuit to allow movement of the jack in two opposing directions. A servo-control device connected to the jack includes a mechanism to distribute fluid to control the position of a mobile element of the jack. A lever articulated with the mobile element of the jack in an initial articulation point includes a second articulation point with a mobile control unit in transfer controlling the distribution mechanism. The lever is able to turn around the initial articulation point via action of a control moving the driver assembly of the lever, connected to a third articulation point at the opposite end. | 11-25-2010 |
| 20100294245 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - Disclosed is a spark ignition type internal combustion engine, which comprises a variable compression ratio mechanism capable of changing a mechanical compression ratio, and a variable valve timing mechanism capable of controlling the closing timing of an intake valve. The intake air flow to be fed to the inside of a combustion chamber is controlled mainly by changing the closing timing of an intake valve so that the mechanical compression ratio is set higher at an engine low-load miming time than that at an engine high-load running time. The mechanical compression ratio at the engine low-load running time before completion of the warm-up of the internal combustion engine is set lower than that at the engine low-load running time after completion of the warm-up of the internal combustion engine. Although the expansion ratio at the engine low-load running time is raised to improve the mileage, it is possible at an engine cold start to heat an exhaust purifying catalyst promptly and to suppress the deterioration of an exhaust emission. | 11-25-2010 |
| 20100294246 | PARALLEL CRANK DRIVE - The invention relates to a parallel crank drive ( | 11-25-2010 |
| 20100300411 | TWO-STROKE INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO AND AN EXHAUST PORT SHUTTER - With reference to FIG. | 12-02-2010 |
| 20110005497 | ENGINE CONTROL SYSTEM - In a hybrid type vehicle designed to use an engine and motor generators to drive the vehicle, the engine is provided with a variable compression ratio mechanism and a variable valve timing mechanism. When the requested output of the engine increases, minimum fuel consumption rate maintenance control maintaining a mechanical compression ratio at a maximum mechanical compression ratio and in that state increasing the engine speed so as to satisfy the requested output of the engine and torque increase control lowering the mechanical compression ratio and increasing the engine torque are selectively performed. | 01-13-2011 |
| 20110061631 | ENGINE WITH A VARIABLE VOLUME CHAMBER - The invention relates to an engine including: —a cylinder that contributes to define a chamber ( | 03-17-2011 |
| 20110180045 | IGNITION TIMING CONTROL APPARATUS AND METHOD FOR INTERNAL COMBUSTION ENGINE - When the amount of fresh air drawn into a combustion chamber is designated Ma and the amounts of exhaust gas recirculated into the combustion chamber by external and internal recirculation mechanisms are designated Megre and Megri, respectively, the exhaust gas recirculation rate (Regre) is defined as (Megre+Megri)/(Ma+Megre+Megri). The base ignition timing applied when Regr=0 is set based on the operating state of an internal combustion engine. An advance amount (IGad) is set such that the characteristic of an increase in IGad with respect to an increase in Regr is a downward convex characteristic. The ultimate ignition timing is set to a timing that is advanced from the base ignition timing by the advance amount (IGad). | 07-28-2011 |
| 20110197859 | Dynamically Altering Piston Displacement - Systems are disclosed that enable an internal combustion engine to dynamically alter piston displacement. The alteration is dynamic, because it occurs during engine operation, rather than requiring stopping and disassembling the engine. It is piston displacement that is altered, rather than engine displacement, because the actual volume that is displaced by a piston (as it moves within a cylinder) is altered. This is contrasted with the prior art practice of starving some cylinders of fuel. Because “engine displacement” is conveniently defined in prior art multi-displacement systems, to include only cylinders that actively produce power, the fuel-starved cylinders are excluded from a calculation of “engine displacement” and thus the “engine displacement” allegedly changes. The disclosed dynamic alteration of piston displacement is the alteration of actual displaced cylinder volume, and is differentiated from alteration of engine displacement. | 08-18-2011 |
| 20110253108 | CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE - An internal combustion engine wherein a variable compression ratio mechanism which can change the mechanical compression ratio and a detection sensor for detecting the mechanical compression ratio are provided and wherein the mechanical compression ratio is controlled based on the mechanical compression ratio detected by the detection sensor. When a signal line of the detection sensor breaks, the mechanical compression ratio is lowered to the minimum mechanical compression ratio. | 10-20-2011 |
| 20110290218 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - A spark ignition type internal combustion engine of the present invention comprises a variable closing timing mechanism able to change a closing timing of an intake valve after intake bottom dead center and an EGR mechanism making a part of the exhaust gas flow again into a combustion chamber as EGR gas. The EGR mechanism is controlled so that the amount of EGR gas is reduced when the closing timing of the intake valve is at a retarded side, compared with when it is at an advanced side. Due to this, occurrence of variation among cylinders in the air-fuel ratio and intake resistance along with blowback of intake gas can be suppressed. | 12-01-2011 |
| 20120080012 | VARIABLE COMPRESSION RATIO INTERNAL ENGINE - A variable compression ratio internal engine including at least two block portions connected to each other and moveable relative to each other so that the compression ratio can be varied. The engine includes an input gear for inputting a rotation output from an output gear to the cam shaft. The input gear and a rotation transmission shaft are constituted to be able to slide relative to each other or the output gear and the rotation transmission shaft are constituted to be able to slide relative to each other in the direction of the movement of the one block portion relative to the other block portion such that the meshing between the input gear and the cam shaft side gear or the meshing between the output gear and the crank shaft side gear is maintained when the one block portion is moved relative to the other block portion. | 04-05-2012 |
| 20120145129 | COMPENSATING ARRANGEMENT FOR A VARIABLE COMPRESSION RATIO ENGINE - A compensating arrangement for a variable compression ratio engine, the compensating arrangement comprising a piston ( | 06-14-2012 |
| 20120272937 | INTERNAL COMBUSTION ENGINE - An internal combustion engine is provided with a variable volume device which changes the volume of a combustion chamber by compression of a gas spring when the pressure of the combustion chamber reaches a control pressure, a pressure changing device which changes a pressure of the gas of the gas spring, and a volume changing device which changes a volume of a compression space in which the gas of the gas spring is compressed. The internal combustion engine detects the operating state and performs control to reduce the pressure of the gas of the gas spring and reduce the volume of the compression space the larger the combustion rate of the fuel in the combustion chamber. | 11-01-2012 |
| 20120279476 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - An internal combustion engine which is provided with a variable compression ratio mechanism which can change a mechanical compression ratio and a variable valve timing mechanism which can control a closing timing of an intake valve. A target operating point which can be reached after a fixed time without entering no-entry regions from the current operating point toward an operating point which satisfies the demanded intake air amount is calculated for an operating point which shows a combination of the mechanical compression ratio and the closing timing of the intake valve when the demanded intake air amount changes, and the mechanical compression ratio and the closing timing of the intake valve are made to change toward this target operating point. | 11-08-2012 |
| 20120304968 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - An internal combustion engine which is provided with a variable compression ratio mechanism which can change a mechanical compression ratio and a variable valve timing mechanism which can control a closing timing of an intake valve. No-entry regions (X | 12-06-2012 |
| 20130025571 | INTERNAL COMBUSTION ENGINE - An internal combustion engine is provided with an exhaust valve which has a tapered plug part, a tube-shaped member which is arranged in a region where the exhaust valve is arranged and which is engaged with the tapered plug part of the exhaust valve at one end part which faces a combustion chamber, and a fluid spring for biasing the tube-shaped member to the side facing the combustion chamber. The tube-shaped member is formed so as to be able to move substantially parallel to the direction of movement of the exhaust valve and the other part abuts against the fluid spring. The fluid spring is formed so as to contract using the change in pressure of the combustion chamber as a drive source when the pressure of the combustion chamber reaches a predetermined control pressure. | 01-31-2013 |
| 20130055990 | VARIABLE COMPRESSION RATIO ENGINE CONTROL APPARATUS - A variable compression ratio engine control apparatus includes a fuel injection device, a variable compression ratio device, a target compression ratio setting section and a compression ratio controlling section. The fuel injection device injects fuel into an engine for combustion. The variable compression ratio device varies an engine compression ratio of the engine. The target compression ratio setting section sets a target compression ratio. The compression ratio controlling section controls the engine compression ratio toward the target compression ratio. The target compression ratio setting section sets the target compression ratio based on an engine rotational speed, during a fuel cut operating state in which fuel injection by the fuel injection device is stopped. | 03-07-2013 |
| 20130092132 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - The invention relates to engine building, and specifically to reciprocating internal combuston engines. The technical result of the invention consists in simplifying the design, the possibility of monitoring and regulating the moment of self-ignition of a homogenized fuel-air mix, and reducing the specific flow rate of the fuel. The method for operating an internal combustion engine consists in feeding a charge to the combustion chamber of a main cylinder and an auxiliary cylinder which are connected to one another and have different diameters, and in which the pistons are arranged. The piston of the auxiliary cylinder is delayed in accordance with the shaft rotation phase with respect to the piston of the main cylinder and as the piston of the main cylinder reaches the upper dead center thereof, when the majority of the charge is located in the auxiliary cylinder, and the charge to the piston of the auxiliary cylinder is boosted. The piston of the main cylinder is used to compress the mix without bringing said mix to self-ignition and therefore preparing said mix for subsequent rapid ignition, while the piston of the auxiliary cylinder is used to boost the compressed homogenized fuel-air mix, and said mix is brought to the temperature and pressure in the combustion chamber prior to compression self-ignition of the mix. | 04-18-2013 |
| 20130098337 | INTERNAL COMBUSTION ENGINE FOR A VEHICLE COMPRISING AT LEAST ONE COMPRESSOR CYLINDER AT LEAST ONE COMPRESSOR CYLINDER CONNECTED TO A COMPRESSED-AIR TANK - An internal combustion engine includes a working cylinder ( | 04-25-2013 |
| 20130152901 | MULTI-CYLINDER SPARK IGNITION ENGINE - An engine has a geometric compression ratio of higher than 12, and includes an exhaust manifold, a variable exhaust valve timing mechanism, an ignition timing controller, and an effective compression ratio adjuster. The exhaust manifold has a plurality of branched exhaust passages connected to the respective exhaust ports of the individual cylinders; a plurality of first collector segments each of which joins the branched exhaust passages for the cylinders which are not adjacent in the exhaust order sequence; a plurality of middle exhaust passages connected to the downstream of the first collector segments, respectively; and a second collector segment that joins the middle exhaust passages. In at least low and middle speed ranges in a high load region of the engine, the effective compression ratio is set to have a value larger than 10 and the ignition timing is retarded, and the valve opening time of the exhaust valve is changed according to the engine speed so that a predetermined amount of a valve overlap period is ensured and that negative pressure waves from exhaust pressure pulses reach an exhaust port during the valve overlap period in a plurality of engine speed ranges. This effectively reduces knocking in low and middle speed ranges in a high load region of the engine while achieving high torque by keeping the compression ratio high. | 06-20-2013 |
| 20130220279 | VARIABLE COMPRESSION RATIO SYSTEMS FOR OPPOSED-PISTON AND OTHER INTERNAL COMBUSTION ENGINES, AND RELATED METHODS OF MANUFACTURE AND USE - Various embodiments of methods and systems for varying the compression ratio in opposed-piston engines are disclosed herein. In one embodiment, an opposed-piston engine can include a first phaser operably coupled to a first crankshaft and a second phaser operably coupled to a corresponding second crankshaft. The phase angle between the crankshafts can be changed to reduce or increase the compression ratio in the corresponding combustion chamber to optimize or at least improve engine performance under a given set of operating conditions. | 08-29-2013 |
| 20130255641 | RECIPROCATING INTERNAL COMBUSTION ENGINE - A compression-ignition constant-volume constant-temperature combustion reciprocating internal combustion engine can operate with a first combustion stage and a second combustion stage. The first combustion stage can be configured to occur at about constant-volume, where a quantity of a first heat addition can be selected to ensure that a first combustion temperature during the first combustion stage does not exceed a threshold temperature at which NOx formation occurs. The second combustion stage can be configured to occur at about a second combustion temperature that remains about constant during the second combustion stage, where the second combustion temperature can be about equal to the first combustion temperature at an end of the first combustion stage, and where a quantity and a rate of a second heat addition delivered to the engine during the second combustion stage can be configured to ensure that the second combustion temperature of the second combustion stage remains about constant during the expansion stroke even as cylinder pressure decreases. | 10-03-2013 |
| 20130269658 | VARIABLE STROKE ASSEMBLY - There is proposed a variable stroke assembly having a primary crank, the primary crank having a primary axis of rotation; a hypocycloid gear set having at least one internal gear and at least one spur gear, the internal gear having an axis of rotation that coincides with the primary axis of rotation of the primary crank and the spur gear having a secondary axis of rotation, wherein the primary crank cooperatively engages and rotates within the internal gear about the primary axis of rotation, the spur gear pivotally mounted on the primary crank such that the secondary axis of rotation is offset from the primary axis of rotation; a secondary crank having a third axis of rotation, wherein the secondary crank cooperatively engages the spur gear such that the third axis of rotation is further offset from the primary and secondary axis of rotation; a connecting rod, with a first and second end, the first end of connecting rod is pivotally connected to the secondary crank, wherein operation the connecting rod travels in a substantially linear motion that translates into rotational motion of the secondary crank, spur gear and primary crank. | 10-17-2013 |
| 20130276759 | INTERNAL COMBUSTION ENGINE WITH PARTIAL DEACTIVATION AND METHOD FOR THE OPERATION OF AN INTERNAL COMBUSTION ENGINE OF SAID TYPE - A system is provided for an internal combustion engine comprising, at least two cylinders wherein the at least two cylinders form at least two groups, wherein each group comprises at least one cylinder, the at least one cylinder of at least one group being formed as a cylinder which can be activated in a load-dependent manner and which is deactivated if a predefined load is undershot. The at least two groups are characterized by different compression ratios, the at least one cylinder of a first group having a higher compression ratio and the at least one cylinder of a second group having a lower compression ratio and the at least one cylinder of the second group comprises an activatable and deactivatable cylinder. Use of the first cylinder group, and deactivation of the second cylinder group during partial loads increases engine efficiency and fuel economy. | 10-24-2013 |
| 20130306036 | VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - A variable compression ratio internal combustion engine basically has a main engine body and a variable compression ratio mechanism. A housing is attached to an outside wall of the main engine body to support an actuator. The variable compression ratio mechanism varies an engine compression ratio according to a rotational position of a first control shaft by the actuator. A second control shaft links the actuator to the first control shaft. A bearing includes a pair of split bearing bodies that rotatably holds and supports the second control shaft on the housing. The split bearing body that is farther from the main engine body has higher in rigidity than the housing. The bearing is fixed to the side wall of the main engine body by fixing bolts that pass through both of the split bearing bodies and thread into the side wall of the main engine body. | 11-21-2013 |
| 20130327302 | VARIABLE COMPRESSION RATIO ENGINE - In a variable compression ratio engine with a connecting mechanism including a first control shaft to control the compression ratio of a variable compression ratio, a second control shaft to be rotated/retained by an actuator, and a lever interconnecting the first control shaft and the second control shaft, a speed reduction ratio from the actuator to the first control shaft through the rotation power transmission path is set to be maximum at the maximum compression ratio, at a preset compression ratio (i.e. at any given compression ratio between the minimum compression ratio and the maximum compression ratio) the speed reduction ratio is set to be minimum, and the reduction ratio is set higher at the maximum compression ratio as compared to the intermediate compression ratio. | 12-12-2013 |
| 20140000567 | VARIABLE COMPRESSION RATIO DIESEL ENGINE | 01-02-2014 |
| 20140007848 | USING TORSIONAL ENERGY TO MOVE AN ACTUATOR - An actuator for varying a compression ratio of an engine by varying by the rotary motion of a control shaft coupled to a variable compression ratio device. The actuator comprising: a housing assembly mounted to the engine; a rotor assembly coupled to the control shaft defining at least one vane separating a chamber in the housing assembly into a first chamber and a second chamber, the vane being capable of rotation to shift the relative angular position of the rotor assembly from a first rotational position associated with a first compression ratio to a second rotational position associated with a second compression ratio; and a control valve moveable to a first position in which torsional energy from the control shaft is permitted to rotate the rotor assembly in a direction from the first rotational position toward the second rotational position and to a second position opposite the first position. | 01-09-2014 |
| 20140026861 | METHOD AND DEVICE FOR CONTROLLING AN ADJUSTING UNIT FOR A VARIABLE COMPRESSION RATIO - An internal combustion engine for a motor vehicle, having at least one adjusting device by means of which at least one compression ratio of the internal combustion engine is variably settable. At least one detection device is provided by means of which at least one signal ( | 01-30-2014 |
| 20140041638 | DRIVE CONTROL SYSTEM - In a hybrid type vehicle designed to use an engine and motor generators to drive the vehicle, the engine is provided with a variable compression ratio mechanism and a variable valve timing mechanism. When the requested output of the engine increases, minimum fuel consumption rate maintenance control maintaining a mechanical compression ratio at a maximum mechanical compression ratio and in that state increasing the engine speed so as to satisfy the requested output of the engine and torque increase control lowering the mechanical compression ratio and increasing the engine torque are selectively performed. | 02-13-2014 |
| 20140116395 | VARIABLE COMPRESSION RATIO ENGINE - A system and method for providing a variable compression ratio internal combustion engine is disclosed. The system can include a frame affixed to the engine crankcase and a complementary frame affixed to the block/cylinder head assembly. The system can further comprise an actuating system to enable the block/head assembly to be moved up and down with respect to the crankcase, varying the compression ratio of the engine. A number of mechanisms can be used to achieve this movement, including a rack and pinion, a hydraulic or pneumatic actuator, and a gear drive. The compression ratio can be varied continuously during use. The frames substantially limit movement of the engine components to the y-axis, thus reducing, or eliminating, unwanted movement and stresses in other directions. | 05-01-2014 |
| 20140123958 | PISTON COMPOUND INTERNAL COMBUSTION ENGINE WITH EXPANDER DEACTIVATION - A piston compound internal combustion engine is disclosed with an expander piston deactivation feature. A piston internal combustion engine is compounded with a secondary expander piston, where the expander piston extracts energy from the exhaust gases being expelled from the primary power pistons. The secondary expander piston can be deactivated and immobilized, or its stroke can be reduced, under low load conditions in order to reduce parasitic losses and over-expansion. Two mechanizations are disclosed for the secondary expander piston's coupling with the power pistons and crankshaft. Control strategies for activation and deactivation of the secondary expander piston are also disclosed. | 05-08-2014 |
| 20140123959 | VARIABLE COMPRESSION RATIO ENGINE - A system and method for providing a variable compression ratio internal combustion engine is disclosed. The system can include a plurality of hollow head bolts for coupling the cylinder head and block of an internal combustion engine. The system can also include a plurality of control bolts disposed through the hollow head bolts to enable vertical movement of the engine components (i.e., in the y-axis), while reducing, or eliminating, unwanted movement and stresses in other directions. A number of mechanisms can be used to move the cylinder head/block assembly, including a rack and pinion, a hydraulic or pneumatic actuator, and a gear drive. The compression ratio can be varied continuously during use and can be included in an overall engine management system. | 05-08-2014 |
| 20140238356 | VARIABLE COMPRESSION RATIO CONTROL SYSTEM - Disclosed is a variable compression ratio control system configured to change a top dead center of a piston in an engine according to an operation state of the engine. The control system may include a motor provided as a power source, a control shaft coupled to the piston, wherein the control shaft changes the top dead center of the piston by a rotation of the control shaft, a driving shaft connected to the motor and to be rotated by the motor, an operation unit movable in a shaft direction of the driving shaft by a rotation of the driving shaft, and an operation link protruding from one portion of an exterior circumferential surface of the control shaft, wherein the operation unit is connected with the operation link so that the operation link rotates the control shaft while the operation unit moves in the shaft direction of the driving shaft. | 08-28-2014 |
| 20140261335 | ROTARY VALVE ENGINE - A reciprocating engine includes an engine body presenting an internal chamber and a fluid intake that supplies intake fluid to the internal chamber. The engine also includes a piston that oscillates within the internal chamber during engine operation. The engine body includes a block and a head that form the internal chamber. | 09-18-2014 |
| 20140261336 | INTERNAL-COMBUSTION ENGINE CONTROL DEVICE AND CONTROL METHOD - It is an object to suppress turbo lag, while suppressing a decrease in torque in an acceleration-transient state to a supercharged state, occurring owing to a rise in required load. In a prescribed steady state, an engine compression ratio εm and ignition timing Tm are set so as to achieve a maximum thermal efficiency. In contrast, in a transient state from a non-supercharged state to a supercharged state, occurring owing to a rise in required load, the engine compression ratio is corrected to a higher compression ratio εh and concurrently the ignition timing is corrected to a retarded timing value Th, in comparison with the engine compression ratio εm and the ignition timing Tm during steady-state operation for the same load, thereby increasing exhaust energy due to a reduction in cooling loss and consequently suppressing a delay of response to a rise in supercharging pressure. | 09-18-2014 |
| 20140290625 | VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - It is an object to increase the reliability and durability by minimizing mixing/entry of foreign matter (contaminants) into a speed reducer. The speed reducer is provided for reducing rotation of an actuator of a variable compression ratio mechanism and for transmitting the reduced rotation to a control shaft of the variable compression ratio mechanism. The actuator and the speed reducer are attached to a sidewall of an engine main body with a housing therebetween. An oil filter, which removes contaminants from within lubricating oil, is attached to the housing with an oil-passage-forming body therebetween. A portion of the lubricating oil supplied from the oil filter immediately after having been filter-purified is supplied via a bypass oil passage, formed in the oil-passage-forming body and the housing, into a speed-reducer accommodation chamber of the housing. | 10-02-2014 |
| 20140345572 | RECIPROCATING INTERNAL COMBUSTION ENGINE - A method for determining a heat addition needed to achieve a target/limiting combustion temperature of a working fluid in a thermodynamic cycle in an engine can include determining a third state of the thermodynamic cycle, where the third state is defined by a third internal energy E | 11-27-2014 |
| 20150034052 | Engine Control Device - The present invention relates to a control device for use with an engine including a variable valve mechanism and a compression ratio varying mechanism that changes a top dead center position of a piston. The control device calculates a base target compression ratio based on engine operating conditions and sets a compression ratio upper limit in association with an operation angle of an intake valve and a phase of an opening period of the intake valve. The control device then selects the lower compression ratio from the base target compression ratio and the compression ratio upper limit and controls the compression ratio varying mechanism | 02-05-2015 |
| 20150083085 | FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - With reference to FIG. | 03-26-2015 |
| 20150114354 | METHOD AND APPARATUS FOR CONTROLLING COMBUSTION OF ENGINE HAVING MIXED COMBUSTION MODE - A method of controlling combustion of an engine improves unstable ignition and knocking which may be generated in an engine to which a diesel-gasoline mixed combustion mode and a gasoline mixed combustion mode are applied to low load and high load driving zones. The method includes: determining a combustion mode according to a current driving state of the engine; determining a compression ration corresponding to the combustion mode; controlling a variable compression ratio device to control a compression ratio of a cylinder; determining whether the combustion state of the engine obtained during the combustion after the control to the compression ratio satisfies a set condition; and performing a compression ratio compensation such that the combustion state of the engine satisfies the set condition with taking a combustion pressure sensor signal as a feedback signal when the set condition is not satisfied. | 04-30-2015 |
| 20150114355 | METHOD AND APPARATUS FOR CONTROLLING COMBUSTION OF ENGINE HAVING MIXED COMBUSTION MODE - A method and an apparatus for improving unstable ignition and knocking which may be generated in an engine to which a diesel-gasoline mixed combustion mode and a gasoline mixed combustion mode may be applied to low load and high load driving zones may include determining a combustion mode according to a current driving state of the engine from the mixture combustion mode and the gasoline combustion mode, and variable-controlling the compression ratio to a compression ratio corresponding to a corresponding combustion mode by controlling a variable compression ratio device for the control of the compression ratio to the compression ratio corresponding to the combustion mode according to the current driving state of the engine. | 04-30-2015 |
| 20150114356 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include an operating unit operated by hydraulic pressure to reciprocate the plunger, an oil control valve controlling hydraulic pressure supplied to the operating unit, an oil supplying unit storing oil supplied to the operating unit via the oil control valve and transmitting the stored oil to the oil control valve, an actuator operating the oil control valve, and a controller connected with the actuator to control the actuator according to an operational state of an engine. | 04-30-2015 |
| 20150122225 | CONTROL DEVICE FOR VARIABLE-COMPRESSION-RATIO INTERNAL COMBUSTION ENGINE - A control device for a variable compression ratio internal combustion engine is equipped with a variable compression ratio device capable of changing an engine compression ratio of the internal combustion engine. The control device detects or estimates the temperature of an exhaust component (B11), and sets a target exhaust gas temperature based on the temperature of the exhaust component (B12). A mixing ratio and compression ratio set section (B13) sets a fuel mixing ratio and the engine compression ratio within such a range as not to exceed the target exhaust gas temperature such that energy loss becomes minimum. | 05-07-2015 |
| 20150122226 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - At the time of increasing an actual intake air amount by increasing a valve overlap period of intake and exhaust valves ( | 05-07-2015 |
| 20150136089 | INTERNAL COMBUSTION ENGINE COMPRISING VARIABLE COMPRESSION RATIO MECHANISM - This internal combustion engine comprising a variable compression ratio mechanism either measures an exhaust temperature or exhaust pressure which varies according to an actual expansion ratio, or measures a physical quantity which varies according to the exhaust temperature and/or the exhaust pressure, and estimates the current mechanical compression ratio on the basis of the measured value. | 05-21-2015 |
| 20150292400 | DRIVE DEVICE - A wave motion gearing speed reducer ( | 10-15-2015 |
| 20150300272 | VARIABLE COMPRESSION RATIO PISTON SYSTEM - The variable compression ratio piston system for an engine adjusts the compression ratio of the engine piston by way of hydraulic fluid distributed between a pair of chambers formed in a pair of bores receiving control pistons mechanically coupled to the engine piston. A control valve selectively permits flow of hydraulic fluid between the high compression ratio line and the low compression ratio line. A variable force solenoid controlled by an engine control unit preferably controls the position of the control valve. The position of the spool controls whether hydraulic fluid can flow toward the first chamber, toward the second chamber, or not at all. Flow of hydraulic fluid is actuated by alternating forces from inertial and combustion forces on a crankshaft from operation of the engine. | 10-22-2015 |
| 20150345441 | DUAL FUEL ENGINE HAVING SELECTIVE COMPRESSION REDUCTION - An engine system is disclosed. The engine system may have an engine block that at least partially defines a cylinder bore, and a cylinder liner disposed within the cylinder bore. The engine system may also have at least one air intake port radially formed within the cylinder liner, a piston slidingly disposed within the cylinder liner and configured to open and close the at least one air intake port, a cylinder head configured to close off an end of the cylinder liner and form a combustion chamber, and at least one exhaust valve disposed within the cylinder head. The engine system may further have a valve actuation system configured to cyclically move the at least one exhaust valve between open and closed positions, and a variable timing device configured to selectively interrupt cyclical movement of the at least one exhaust valve to change a compression ratio of the engine system. | 12-03-2015 |
| 20150354469 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE WITH A VARIABLE COMPRESSION RATIO - In a method for operating an internal combustion engine a compression ratio is set to a setpoint compression ratio by means of an adjustment device, wherein in a normal operating mode of the internal combustion engine the setpoint compression ratio is determined as a function of an, operating variable of the internal combustion engine. The internal combustion engine is at least temporarily operated in a predictive operating mode in which the setpoint compression ratio is determined on the basis of an anticipated estimated operating variable which is estimated on the basis of the instantaneous gradient of the operating variable over time. | 12-10-2015 |
| 20150369139 | METHOD AND SYSTEM FOR ADJUSTING A COMPRESSION RATIO - Methods and systems are provided for adjusting a compression ratio of a combustion chamber. In one example, a method may include altering an axial position and rotational orientation of a control element in response to an engine operation. | 12-24-2015 |
| 20160076436 | VARIABLE COMBUSTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A variable combustion system for an internal combustion engine, which suppresses mechanical compression ratio change control by a variable mechanical compression ratio control mechanism and carries out internal EGR amount change control by a variable valve actuating control mechanism on a preferential basis in a first operating region in which a compression self-ignition combustion is carried out, and which suppresses the internal EGR amount change control by the variable valve actuating control mechanism and carries out the mechanical compression ratio change control by the variable mechanical compression ratio control mechanism on a preferential basis in a second operating region in which a spark ignition combustion is carried out. | 03-17-2016 |
| 20180023487 | Expandable Joint for Variable Compression Ratio Engines | 01-25-2018 |
| 20090020103 | ENGINE WITH VARIABLE VOLUMETRIC RATIO - Four-stroke internal combustion engine comprising a housing component having a first series of cylinders, each with an axis and a diameter, and a second series of cylinders, each with an axis and a diameter, in which each cylinder of the first series communicates with at least one cylinder of the second series via a channel which is provided by the housing component. | 01-22-2009 |
| 20100242919 | Constant Compression Engine Using a Preferably Toroidal Volume Control Slider - A novel device for controlling the compression pressure of an internal combustion engine is disclosed. | 09-30-2010 |
| 20120160217 | COMBUSTION PRESSURE CONTROLLER - A combustion pressure control system of a spark ignition type of internal combustion engine which has a sub chamber | 06-28-2012 |
| 20120291756 | Two-Stroke Internal Combustion Engine with Three Chambers - A two-stroke internal combustion engine is disclosed. Fuel efficiency is improved and extended over a wide power band by an inlet valve which controls the air charge. This inlet valve also varies the volume of the combustion chamber and thus maintains a constant compression ratio. A stoichiometric air/fuel mixture can be maintained at low power. An integrated positive displacement supercharger provides adequate air charge at all power levels and recovers compressor power from unused supercharged air. The capacity of the supercharger is reduced at low power level. An integrated secondary expansion chamber extends the power stroke by mixing combustion gases with ambient air for farther expansion and power production. The secondary expansion chamber allows simultaneous purging and charging of the combustion chamber. An alternate embodiment with opposed cylinders provides nearly continuous power. | 11-22-2012 |
| 20130074810 | COMBUSTION PRESSURE CONTROL DEVICE - A combustion pressure control system of an internal combustion engine which has sub chambers which are communicated with combustion chambers, provided with spring devices each of which has elasticity and which has one side connected to a sub chamber which is communicated with one combustion chamber and has the other side connected to a sub chamber which is communicated with the other combustion chamber. The spring device includes a fluid sealing member. When at least one of the one combustion chamber and the other combustion chamber reaches a control pressure in the time period from a compression stroke to expansion stroke of the combustion cycle, the spring device contracts, whereby the volumes of the sub chambers increase and the pressure rise of the combustion chambers is suppressed. | 03-28-2013 |
| 20140165969 | VARIABLE COMPRESSION RATIO DEVICE AND INTERNAL COMBUSTION ENGINE USING THE SAME - A variable compression ratio device and an internal combustion engine are disclosed. The variable compression ratio device includes a main piston that moves in a reciprocating manner, a main combustion chamber having a volume that is varied by the main piston, a sub-compression chamber communicating with the main combustion chamber; a sub-piston configured to reciprocate in the sub-compression chamber to vary a volume of the sub-compression chamber; and a sub-piston reciprocating unit that reciprocates the sub-piston. Accordingly, the air-fuel ratio and output of the internal combustion engine can be improved. | 06-19-2014 |
| 20090101113 | Variable Compression Ratio Internal Combustion Engine - A variable compression ratio internal combustion engine rotates a camshaft to cause relative movement between a crankcase and a cylinder block. The camshaft has a shaft member, a cam member fixed to the shaft member, and a movable bearing member rotatable with respect to the shaft member. The cam member is rotatably housed in a cam housing hole formed in the crankcase, and the movable bearing member is rotatably housed a bearing housing hole formed in the cylinder block. The length of a line segment joining the centers of the shaft member and the movable bearing member, the center of the movable bearing member being the center of rotation of the movable bearing member with respect to the bearing housing hole, is set to be longer than the length of a line segment joining the centers of the shaft member and the cam member, the center of the cam member being the center of rotation of the cam member with respect to the cam housing hole. | 04-23-2009 |
| 20090266338 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In a spark ignition type internal combustion engine that includes a variable compression ratio mechanism A capable of changing the mechanical compression ratio, and a variable valve mechanism B capable of changing valve characteristics of an intake valve or an exhaust valve, the variable valve mechanism is mechanically coupled to the variable compression ratio mechanism, and the variable valve mechanism is controlled in accordance with the compression ratio-changing operation amount of the variable compression ratio mechanism. The variable valve mechanism is coupled to the variable compression ratio mechanism without intervention of an electronic control unit. Therefore, the possibility of the interference between a piston and an intake valve resulting from an abnormality in a control system that includes an electronic control unit as an intervening unit can be eliminated. | 10-29-2009 |
| 20090277422 | Variable Compression Ratio Internal Combustion Engine - In a variable compression ratio internal combustion engine that controls the compression of an internal combustion engine by changing the volume of the combustion chamber of the internal combustion engine in an axial direction of the cylinder, when a target compression ratio (εt) based on an operating condition of the internal combustion engine is at a reference compression ratio (ε0) or greater (S | 11-12-2009 |
| 20090320804 | COMPRESSION REDUCTION DEVICE FOR PISTON SPARK IGNITION INTERNAL COMBUSTION ENGINES WITH REMOVABLE CYLINDERS - A compression reduction device for internal combustion, spark ignition, piston engines with removable cylinders. The device is installed under each cylinder of an engine to reduce the engine's compression ratio, thereby allowing the safe use of lower octane unleaded fuel. The device is a metal or composite part shaped to match the cylinder-to-crankcase mount. The engine cylinders are unbolted and raised slightly to allow placement of the invention between the cylinder and it's mounting on the engine crankcase. After reattaching, the top of the cylinder has effectively been raised, relative to the top of the piston, thereby reducing the cylinder's compression ratio. | 12-31-2009 |
| 20100132674 | SPARK-IGNITED INTERNAL COMBUSTION ENGINE AND METHOD OF CONTROLLING THE SAME - A spark-ignited internal combustion engine includes a variable compression ratio mechanism that changes a mechanical compression ratio, and a variable valve timing mechanism that controls a valve closing timing at which an intake valve is closed, in which the amount of intake air that is supplied into a combustion chamber is controlled by changing the valve closing timing of the intake valve, and when an air-fuel ratio is increased from a first desired air-fuel ratio to a second desired air-fuel ratio, the valve closing timing of the intake valve is brought close to an intake bottom dead center until the air-fuel ratio becomes equal to the second desired air-fuel ratio, without changing a fuel injection amount. | 06-03-2010 |
| 20100139622 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism able to change a mechanical compression ratio and a variable valve timing mechanism able to control the closing timing of an intake valve are provided. At the time of engine low load operation, the mechanical compression ratio is made the maximum so that the expansion ratio becomes 20 or more. Further, at the time of engine low load operation, in part of the operating region or all of the operating region, the actual compression ratio is lowered compared with the time of engine high load operation and, at the time of engine low load operation, at least when the actual compression ratio is being lowered compared with the time of engine high load operation, the throttle valve is made to close. | 06-10-2010 |
| 20100154748 | ENGINE BLOCK AND CYLINDER HEAD ASSEMBLY FOR A VARIABLE COMPRESSION RATIO ENGINE - An engine block and cylinder head assembly for a variable compression ratio engine, includes a common cylinder head ( | 06-24-2010 |
| 20100154749 | THREE-STROKE INTERNAL COMBUSTION ENGINE, CYCLE AND COMPONENTS - A three-stroke internal combustion engine completes a complete combustion cycle of exhaust, intake, compression, ignition, and expansion within a single revolution of a crankshaft by a single stroke of a first piston and a single stroke of a second piston within a single cylinder. | 06-24-2010 |
| 20100163001 | Spark Ignition Type Internal Combustion Engine - An internal combustion engine provided with a variable compression ratio mechanism able to change a mechanical compression ratio and a variable valve timing mechanism able to individually control the opening timing and closing timing of the intake valve. At the time of engine low load operation, the maximum expansion ratio is obtained by making the mechanical compression ratio maximum and, while the mechanical compression ratio is made maximum, the opening timing of the intake valve is maintained at a target opening timing of substantially intake top dead center in the noninterference region where no interference between the valve and the piston occurs. | 07-01-2010 |
| 20100163002 | VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - An internal combustion engine | 07-01-2010 |
| 20100180869 | SPARK-IGNITED INTERNAL COMBUSTION ENGINE AND METHOD OF CONTROLLING THE SAME - A spark-ignited internal combustion engine includes a variable compression ratio mechanism (A) that changes a mechanical compression ratio and an actual compression ratio 70 start timing-changing mechanism (B) that changes a start timing at which actual compression starts. The maximum mechanical compression ratio while the engine is in operation is reduced with increase in engine speed. | 07-22-2010 |
| 20100192916 | RECIPROCATING PISTON SLEEVE VALVE ENGINE - A sleeve valve ( | 08-05-2010 |
| 20100192917 | SPARK-IGNITED INTERNAL COMBUSTION ENGINE AND METHOD OF CONTROLLING THE SAME - A spark-ignited internal combustion engine includes a variable compression ratio mechanism that changes a mechanical compression ratio and an actual compression ratio start timing-changing mechanism that changes a start timing at which actual compression starts. An actual compression ratio is changed according to the specific heat ratio of an intake gas that is supplied into a cylinder. | 08-05-2010 |
| 20100192918 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - An internal combustion engine comprises a variable compression ratio mechanism capable of varying the mechanical compression ratio and a variable valve timing mechanism capable of controlling the closing timing of an intake valve. In an engine low-load operation, the mechanical compression ratio is maintained at a maximum mechanical compression ratio. In an engine high-load operation, the mechanical compression ratio is gradually decreased as the engine load increases. In the engine high-load operation, a load at which a predetermined mechanical compression ratio lower than the maximum mechanical compression ratio is obtained is preset, and a throttle valve is closed in the range of loads lower than the preset load. | 08-05-2010 |
| 20100192919 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism able to change a mechanical compression ratio and a variable valve timing mechanism able to control the closing timing of an intake valve are provided. The mechanical compression ratio is made to be the maximum mechanical compression ratio at low load operation regions excluding idling operation, while during idling operation, the mechanical compression ratio is made lower than the maximum mechanical compression ratio. | 08-05-2010 |
| 20100206271 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - A spark ignition internal combustion engine includes a variable expansion ratio mechanism which can alter the mechanical expansion ratio, and an exhaust variable valve mechanism which can alter the timing for opening an exhaust valve. The mechanical expansion ratio and the timing for opening the exhaust valve are set depending on the engine load such that the mechanical expansion ratio increases and the timing for opening the exhaust valve is retarded to the exhaust bottom dead center side as the engine load decreases. By setting the mechanical expansion ratio in such a manner depending on the engine load, thermal efficiency can be enhanced as compared with a case where the mechanical expansion ratio is set to make the actual compression rate constant for example. Consequently, a spark ignition internal combustion engine exhibiting high thermal efficiency is provided. | 08-19-2010 |
| 20100282215 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism (A) able to change a mechanical compression ratio and a variable valve timing mechanism (B) able to control the closing timing of an intake valve ( | 11-11-2010 |
| 20110041810 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism able to change a mechanical compression ratio, a variable valve timing mechanism able to control the closing timing of the intake valve, and predicting means for predicting the temperature of the catalyst arranged in the engine exhaust passage are provided. When it is predicted that the temperature of the catalyst will fall to less than the activation temperature, the actual expansion ratio is lowered while maintaining the actual compression ratio the same or while increasing the actual compression ratio. | 02-24-2011 |
| 20110041811 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism able to change a mechanical compression ratio and a variable valve timing mechanism able to change a closing timing of an intake valve are provided. When a load is higher than a predetermined load, an amount of intake air inside a combustion chamber is controlled by controlling the closing timing of the intake valve, while when the engine load is lower than the predetermined load, the amount of intake air inside the combustion chamber is controlled by controlling both the closing timing of the intake valve and the opening degree of the throttle valve. | 02-24-2011 |
| 20110094479 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism (A) able to change a mechanical compression ratio and a variable valve timing mechanism (B) able to change a closing timing of an intake valve ( | 04-28-2011 |
| 20110114063 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism able to change a mechanical compression ratio and a variable valve timing mechanism able to control the closing timing of an intake valve are provided. The mechanical compression ratio is held at a maximum mechanical compression ratio at the engine low load operation side and gradually made to decrease as the engine load increases at the engine high load operation side. The actual compression ratio is held nearly constant at the engine high load operation side and is made to decrease as the engine load decreases at the engine low load operation side. | 05-19-2011 |
| 20110290217 | ENGINE SYSTEM CONTROL DEVICE - The present invention provides an engine system control device to be applied to an engine system provided with an engine having a variable compression ratio mechanism capable of changing a compression ratio. In the case where generation of failure in a compression ratio control system is detected, determination of a state of a member placed in an intake and exhaust system of the engine is inhibited. | 12-01-2011 |
| 20120017876 | HIGH EXPANSION RATIO INTERNAL COMBUSTION ENGINE - A high expansion ratio internal combustion engine includes: a variable compression ratio mechanism that varies a mechanical compression ratio of the internal combustion engine; and a variable valve train in which some valve(s) of a plurality of intake valves is phase-variable and the remaining valve(s) is phase-fixed, the variable valve train being configured such that a working angle of the phase-variable intake valve is larger than a working angle of the phase-fixed intake valve, wherein a valve-open timing of the phase-variable intake valve is retarded after a valve-open timing of the phase-fixed intake valve when the internal combustion engine is under low-load operating state. | 01-26-2012 |
| 20120031377 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - A spark ignition type internal combustion engine of the present invention is provided with a variable compression ratio mechanism able to change a mechanical compression ratio, a variable valve timing mechanism able to control a closing timing of an intake valve, and a supercharger. At the time of engine low load operation, the mechanical compression ratio is made higher compared with at the time of engine high load operation. At the time of engine medium load operation, the supercharging action of the supercharger is used to make the pressure inside the intake pipe rise so that the intake air amount fed into a combustion chamber is increased, compared with at the time of engine low load operation, and the mechanical compression ratio is lowered to make the actual compression ratio fall. | 02-09-2012 |
| 20120210984 | INTERNAL COMBUSTION ENGINE - In an internal combustion engine for a motor vehicle, comprising a crankcase and a crankshaft accommodated therein, and a cylinder housing including at least one cylinder with a cylinder head, the cylinder housing with the cylinder head is supported directly on the crankshaft via eccentric elements which are pivotable for adjusting a position of the cylinder housing with the cylinder head relative to the crankshaft with the crankcase ( | 08-23-2012 |
| 20130055989 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - In an internal combustion engine, a variable compression ratio mechanism which can change the mechanical compression ratio and a variable valve timing mechanism which can control a closing timing of an intake valve are provided. When the variable compression ratio mechanism breaks down, the mechanical compression ratio and the intake valve closing timing are made to change from a current operating point toward a low mechanical compression ratio side demanded operating point without entering the no-entry region. | 03-07-2013 |
| 20130104855 | INTERNAL COMBUSTION ENGINE | 05-02-2013 |
| 20180023486 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE | 01-25-2018 |
| 20100186720 | LOW-ENERGY VALVE SYSTEM FOR A PRESSURIZED GAS ENGINE - The system intended for a pressurized gas engine includes a variable-volume chamber and a valve ( | 07-29-2010 |
| 20100229834 | VARIABLE COMPRESSION RATIO ENGINE - To control the compression ratio of an internal combustion engine, the cylinder block is slidably fitted to the crankcase, projections from the crankcase extend into the cylinder head to support a control shaft bearing the cylinder head. The angular displacement of the control shaft varies the compression ratio by displacing the cylinder head relative to the crankcase. | 09-16-2010 |
| 20120266848 | Lean Combustion Method for a Reciprocating Internal Combustion Engine - A lean combustion method is provided for a four-stroke reciprocating internal combustion engine having a cylinder, in which a combustion chamber is delimited by a cylinder head and a piston is movable in a reciprocating manner, the piston being able to vary the volume of the combustion chamber. A fuel can be introduced directly into the combustion chamber, and at least one gas exchange inlet valve and one gas exchange outlet valve are provided for a gas exchange. An intermediate compression can be set in the combustion chamber at a gas exchange top dead center and a main compression can be set at an ignition top dead center. | 10-25-2012 |
| 20140299108 | IC ENGINE CYLINDER AND PISTON - A cylinder head has a plunger receptacle and a piston has a plunger which, when the piston is reciprocating within an engine cylinder over an engine cycle range between BDC and an intermediate position spaced from both TDC and BDC, exposes the plunger receptacle to the interior of the engine cylinder, but which, when the piston is reciprocating over an engine cycle range between the intermediate position and TDC position, closes the plunger receptacle to the interior of the engine cylinder. A fuel/air charge is created within the engine cylinder, compressed to higher compression ratio in the plunger receptacle at TDC position where it is ignited and then used to ignite the lower compression ratio charge in the engine cylinder. | 10-09-2014 |
| 20140360473 | Variable Compression Ratio Engines and Methods for HCCI Compression Ignition Operation - Variable compression ratio engines and methods for homogeneous charge, compression ignition operation. The engines effectively premix the fuel and air well before compression ignition. Various embodiments are disclosed including embodiments that include two stages of compression to obtain compression ratios well above the mechanical compression ratio of the engine cylinders for compression ignition of difficult to ignite fuels, and a controllable combustion chamber volume for limiting the maximum temperature during combustion. Energy storage with energy management are also disclosed. | 12-11-2014 |
| 20150101574 | VARIABLE COMPRESSION RATIO ENGINE - A variable compression ratio engine includes a variable chamber housing communicating with a combustion chamber of the variable compression ratio engine. A variable chamber piston is slidably disposed within the variable chamber housing and forms a variable chamber together with the variable chamber housing. A connecting shaft is connected to the variable chamber piston. A hydraulic pressure plunger is connected with the connecting shaft and slidably disposed within the variable chamber housing. A hydraulic pressure chamber is formed, with which oil for absorbing impact is filled together with the variable chamber housing. An oil supplier supplies the oil to the hydraulic pressure chamber. A compression ratio controller is connected to the connecting shaft and controls a relative position of the variable chamber piston. | 04-16-2015 |
| 20160032844 | IC ENGINE CYLINDER AND PISTON - An internal combustion engine has at least one engine cylinder which is closed at an end by a cylinder head and within which a piston reciprocates. The cylinder head has a plunger receptacle and the piston has a plunger which, when the piston is reciprocating within the engine cylinder over an engine cycle's range between BDC and an intermediate position spaced from both TDC and BDC, fully opens the plunger receptacle to the interior of the engine cylinder, and which, when the piston is reciprocating over an engine cycle's range between the intermediate position and TDC position, enters the plunger receptacle to compress an air-fuel mixture at higher compression ratio in the plunger receptacle where it is ignited and subsequently used to ignite the rest of the mixture during piston downstroke. | 02-04-2016 |
| 20160076465 | INTERNAL COMBUSTION ENGINE CONTROL DEVICE AND CONTROL METHOD - A target compression ratio ε(t+Tact) after a prescribed time Tact has expired from a current point of time is calculated from an intake air volume drawn into a cylinder after expiration of the prescribed time Tact from the current point of time. A control command to an electric motor that drives a variable compression ratio mechanism is calculated so as to bring an actual compression ratio εr(t+Tact) after the prescribed time Tact into accordance with the target compression ratio ε(t+Tact) after the prescribed time Tact. This enables the actual compression ratio to follow the target compression ratio accurately. | 03-17-2016 |
| 20140238355 | VARIABLE COMPRESSION RATIO DEVICE AND INTERNAL COMBUSTION ENGINE INCLUDING THE SAME - A variable compression ratio device may include a piston assembly having double pistons of which the volume may be varied, a lifter relatively moving one piston of the double pistons with respect to the other piston of the double pistons, a guide unit engaged with the piston assembly and guiding a movement of the one piston with respect to the other piston, and a locking unit selectively coupling the one piston to the other piston. | 08-28-2014 |
| 20150075497 | CONNECTING ROD FOR TWO STAGE VARIABLE COMPRESSION - A connecting rod for a two stage variable compression in an internal combustion engine, the connecting rod including a combustion piston pin support eye that is arranged offset relative to an axis in an eccentrical component which is pivotable about the axis in a first direction of rotation through a first hydraulic displacement cavity and pivotable in a second direction of rotation through a second hydraulic displacement cavity, wherein a hydraulic valve is arranged in the connecting rod, wherein the hydraulic valve includes a hydraulic supply connection at which a hydraulic pressure is applied, wherein the hydraulic pressure moves a hydraulic piston against a force of a preload of a spring, wherein the hydraulic piston remains in a stable low pressure position in a low range of the hydraulic pressure due to the preload of the spring, wherein the supply connection is hydraulically connected with the first hydraulic displacement cavity in the low range of the hydraulic pressure, wherein the hydraulic piston continues to contact a stop at a housing in a high range of the hydraulic pressure due to a pressure applied to a hydraulic piston surface, wherein the supply connection is connected with the second hydraulic displacement cavity in a stable high pressure position of the hydraulic piston in the high range of the hydraulic pressure. | 03-19-2015 |
| 20150128911 | INTERNAL COMBUSTION ENGINE PROVIDED WITH VARIABLE COMPRESSION RATIO MECHANISM - This internal combustion engine is provided with a variable compression ratio mechanism capable of changing a mechanical compression ratio by changing the volume of the combustion chamber at the top dead center. The pressure and temperature of remaining combusted gas within the combustion chamber at the time when the exhaust valve is closed in the intake stroke is measured or estimated, the pressure and temperature of intake air supplied into the combustion chamber after the exhaust valve is closed in the intake stroke is measured or estimated, and based on the assumption that the pressure and temperature of the remaining combusted gas which saturates the volume of the combustion chamber at the time when the exhaust valve is closed in the air intake stroke become, when the intake air is supplied to the combustion chamber, equal to the pressure and temperature of the intake air, the volume of the remaining combusted gas after the change is calculated. | 05-14-2015 |
| 20150330315 | DEVICE AND METHOD FOR CONTROLLING VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - A fuel cut during deceleration is executed at time point t | 11-19-2015 |
| 20150361904 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - A control device for an internal combustion engine which includes a variable compression ratio mechanism arranged to vary a mechanical compression ratio, and a high pressure fuel pump arranged to supply a high pressure fuel to a common rail, and to be driven from a crank shaft through a chain, the control device includes: a fuel pressure abnormal state sensing section configured to sense an abnormal increase of a fuel pressure within the common rail, the control device being configured to decrease the compression ratio in the abnormal state of the fuel pressure. | 12-17-2015 |
| 20080223341 | ENGINE LOAD ESTIMATING APPARATUS AND ENGINE LOAD ESTIMATING METHOD - An engine load estimating apparatus, including an actuator that changes a position of a top dead center of a piston of the engine, and a controller in communication with the actuator. The controller detects a drive output of the actuator when the actuator changes the position of the top dead center of the piston, and estimates the load of the engine based on the detected drive output of the actuator. | 09-18-2008 |
| 20080283027 | Internal combustion engine having a variable compression ratio - In an internal combustion engine including cylinders arranged in a housing, a crankshaft, pistons disposed in the cylinders so as to be movable by the crankshaft, and a device for varying a compression ratio of the internal combustion engine wherein the device, for varying the compression ratio, includes an adjusting structure which varies the effective length of a connecting rod of the piston, the lift of the crankshaft or the position of the cylinder with respect to the center of the crankshaft, an operating structure is provided by rotation of which the position of the adjusting structure can be controlled, and a drive device for controlling the operating structures contains a coupling mechanism with an integrated brake function, whereby h the adjusting structure can either be placed in operative connection with the crankshaft or can be blocked. | 11-20-2008 |
| 20080314368 | Internal combustion engine with variable compression ratio - A coupler, such as a piston pin, is pivotally coupled to a piston such that the piston can pivot about a first axis relative to the coupler. A connecting rod is coupled to the coupler for pivoting about a second axis. The relative positions of the first and second axes can be shifted by pivoting an eccentric portion of the coupler to thereby vary the compression ratio of a piston cylinder within which the piston slides. The coupler comprises a pivot member engager portion that is selectively shifted from first to second positions to vary the compression rates in response to shifting of a pivot member. The pivot member engager is shifted from first to second positions as the piston approaches the bottom dead center position. The pivot member and pivot member engager disengage from one another as the piston travels away from the bottom dead center position. | 12-25-2008 |
| 20090000598 | Reciprocating-piston internal combustion engine with variable compression ratio - In a reciprocating-piston internal combustion engine with a piston movably arranged in a cylinder and coupled via a connecting rod to a transverse lever having a center of gravity, the transverse lever which is supported by a crankshaft and connected to an auxiliary connecting rod by an eccentric for adjusting the compression ratio of the internal combustion engine, the transverse lever has a weight and configuration providing for the center of gravity located so that an excellent operating smoothness of the engine is obtained with simple means. | 01-01-2009 |
| 20090031994 | MULTI LINK TYPE PISTON-CRANK MECHANISM OF INTERNAL COMBUSTION ENGINE - A multi link type piston-crank mechanism comprises an upper link that has one end pivotally connected to a piston of the engine through a piston pin, a lower link that is pivotally connected to the other end of the upper link through an upper pin and rotatably disposed on a crank pin of a crankshaft of the engine; and a control link that has a base end part swingably held by a body of the engine and a leading end pivotally connected to the lower link through a control pin. An axis of the piston pin is offset relative to an axis of the piston in thrust and counter thrust directions. When the piston comes to BDC, a part of the piston takes a position below a lower edge of a corresponding cylinder of the engine and the upper pin is offset relative to the axis of the piston pin in the same direction as a pin offset direction in which the axis of the piston pin is offset in the thrust and counter thrust directions relative to the axis of the piston. | 02-05-2009 |
| 20090038588 | VARIABLE COMPRESSION RATIO DEVICE FOR INTERNAL COMBUSTION ENGINE - A variable compression ratio device for an internal combustion engine comprises a control shaft ( | 02-12-2009 |
| 20090095261 | VARIABLE STROKE ENGINE - A variable stroke engine includes an end portion of a connecting rod, which is connected at one end portion thereof to a piston by a piston pin, and an end portion of a control rod, which is connected at one end portion thereof to an eccentric shaft, and which are linked to each other by a link member rotatably supported on a crankshaft. A rotative power of the crankshaft is transmitted to the camshaft. The camshaft is disposed at such a position that part of a trajectory drawn by the intake-side and exhaust-side cams overlaps a trajectory drawn by the link member in a projection on a plane perpendicular to an axis of the crankshaft, and a rotational phase of the camshaft is set so that the interference, of the intake-side and exhaust-side cams with an end portion, on the camshaft side, of the link member, is avoided. | 04-16-2009 |
| 20090095262 | VARIABLE STROKE ENGINE - A variable stroke engine has a crankshaft, a camshaft, and a rotational shaft, having an eccentric shaft, which are rotatably supported in a crankcase so as to have axes parallel to one another. A connecting rod is connected, at one end portion thereof, to a piston by a piston pin, and a control rod is connected, at one end portion thereof, to the eccentric shaft. The other end portion of the connecting rod and the other end portion of the control rod are linked to each other by a link member rotatably supported on the crankshaft. A rotative power of the crankshaft is transmitted to the camshaft and the rotational shaft, respectively. A timing driving wheel transmitting the rotative power to the camshaft side is mounted on the crankshaft, and a timing driven wheel driven by the timing driving wheel is mounted on the rotational shaft. | 04-16-2009 |
| 20090107464 | VARIABLE COMPRESSION RATIO ENGINE WITH ISOLATED ACTUATOR - A variable compression ratio piston ( | 04-30-2009 |
| 20090107465 | VARIABLE COMPRESSION RATIO ENGINE WITH EXTERNAL ACTUATION IMPULSE - A variable compression ratio piston ( | 04-30-2009 |
| 20090107466 | VARIABLE COMPRESSION RATIO ENGINE WITH DEDICATED BUMPER - A variable compression ratio piston ( | 04-30-2009 |
| 20090107467 | VARIABLE COMPRESSION RATIO ENGINE WITH LOST MOTION COUPLING - A variable compression ratio piston ( | 04-30-2009 |
| 20090107468 | MULTI-LINK ENGINE - A multi-link engine has a piston that moves inside a cylinder. A piston pin connects the piston to an upper link, which is connected to a lower link. A crank pin of a crankshaft supports the lower link thereon. The lower link is pivotally connected to one end of a control link, which is connected at another end to the engine block body by a control shaft. The control shaft is lower than a crank journal of the crankshaft, and disposed on a first side of a plane that is parallel to a cylinder center axis and that contains a center rotational axis of the crank journal. The cylinder center axis is located on a second (i.e., opposite the first side) plane. The control link has a center axis that is parallel to the cylinder center axis when the piston is near top and bottom dead centers. | 04-30-2009 |
| 20090139492 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus that changes the compression ratio of an air-fuel mixture in a combustion chamber according to a driving state of an engine, enablements may include a connecting rod receiving the combustion force from the piston; a pin link receiving a part of the combustion force from the connecting rod and rotating the crankshaft; a support link disposed substantially in parallel with the connecting rod; a division link receiving a part of the combustion force from the connecting rod and transmitting the part of the combustion force to the support link; a control link provided with one end coupled to the division link in order to change position of one end of the division link; and an eccentric camshaft coupled to other end of the control link in order to change position of a rotational axis of the control link. | 06-04-2009 |
| 20090159051 | VARIABLE DISPLACEMENT AND/OR VARIABLE COMPRESSION RATIO ENGINE - The present invention relates to an internal-combustion engine comprising at least one cylinder ( | 06-25-2009 |
| 20090188471 | INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO - An internal combustion engine has at least one cylinder, and a means for varying the compression ratio in the cylinder. The at least one cylinder has two oppositely directed reciprocatingly movable pistons in it, which are each connected via a piston rod with a corresponding arm, whereby each arm shows an opening in which a main shaft that connects the two arms is rotatably supported in bearings. The main shaft includes an angle with a centre line of each opening. The means for varying the compression ratio in the cylinder includes a division in the main shaft, as well as drive means in order to move the parts formed by it of the main shaft apart from each other. | 07-30-2009 |
| 20090205615 | VARIABLE COMPRESSION RATIO SYSTEM - A variable compression ratio system for use in a reciprocating-piston engine. The system allows the compression ratio in a combustion cylinder of the engine to be varied by varying the distance from a combustion chamber facing surface of a piston to the center of pivotal connection of a connecting rod to a crankshaft. The distance is varied responsive to the supply and withdrawal of pressurized hydraulic fluid. The hydraulic fluid is supplied and discharged by a slave pump pivotally connected to the connecting rod at a first end and pivotally connected to a stationary point at a second end. The slave pump supplies and withdraws hydraulic fluid responsive to the rotation of the crankshaft and a hydraulic backpressure controlled using a pressure control valve. | 08-20-2009 |
| 20090241910 | Variable Compression Ratio Apparatus - A variable compression ratio apparatus is disclosed. An upper connecting rod has one end rotatably connected to a piston so as to reciprocate motion of the piston. A lower connecting rod has one end rotatably connected to the other end of the upper connecting rod. A crankshaft is rotatably mounted at an eccentric position of the lower connecting rod. A control rod has one end rotatably connected to the other end of the lower connecting rod, to control the position of that end of the lower connecting rod. A control shaft is connected to the other end of the control rod, to control the position of that end of the control rod. | 10-01-2009 |
| 20090266337 | ELECTROMECHANICAL DEVICE FOR CONTROLLING A VARIABLE COMPRESSION RATIO ENGINE - An electromechanical device ( | 10-29-2009 |
| 20090283073 | LINK TYPE VARIABLE STROKE ENGINE - In a link type variable stroke engine in which a piston, a crankshaft and an eccentric shaft are linked by a linking mechanism, counterweights are provided on the crankshaft so that in a projection view on a plane orthogonal to a rotation axis of the crankshaft, centers of gravity of the counterweights are located on a straight line extending from the rotation axis of the crankshaft in an opposite direction to a direction of a total inertial exciting force when the total inertial exciting force becomes maximum, the total inertial exciting force being obtained by adding inertial exciting forces occurring respectively in movable components of the linking mechanism. Accordingly, it is possible to effectively suppress and lessen inertial exciting force. | 11-19-2009 |
| 20090288641 | LINK TYPE VARIABLE STROKE ENGINE - In a link type variable stroke engine in which a piston, a crankshaft and an eccentric shaft are linked by a linking mechanism, a counterweight part which is provided so that in a projection view on a plane orthogonal to an axis of a rotary shaft, a center of gravity of the counterweight part is located on an opposite side of the axis of the rotary shaft from an axis of the eccentric shaft rotates together with the rotary shaft. Accordingly, it is possible to effectively suppress and lessen half-order inertial exciting force occurring at the eccentric shaft. | 11-26-2009 |
| 20090288642 | LINK TYPE VARIABLE STROKE ENGINE - In a link type variable stroke engine in which: a crankshaft and a rotary shaft having an eccentric shaft are each rotatably supported on a case main body formed integrally with a cylinder block and opened at one side to form a part of a crankcase, and a support plate fastened to an opened end of the case main body at a plurality of positions; and a piston, the crankshaft and the eccentric shaft are linked by a linking mechanism, in a projection view on a plane orthogonal to axes of the crankshaft and the rotary shaft, two of the plurality of fastening positions at which the support plate is fastened to the opened end of the case main body are disposed on a straight line passing the axes of the rotary shaft and the crankshaft. This configuration can increase the rigidity between the crankshaft and the rotary shaft enough to prevent change of the distance between the crankshaft and the rotary shaft. | 11-26-2009 |
| 20090288643 | LINK TYPE VARIABLE STROKE ENGINE - In a link type variable stroke engine in which a piston, a crankshaft and an eccentric shaft are linked by a linking mechanism, an oil supply hole for supplying lubricating oil to a position between a connection tubular part of a sub connecting rod and a crank pin is provided in an upper portion of the connection tubular part at a position which is deviated from a direction of application of maximum load applied from the crank pin to an inner surface of the connection tubular part by maximum in-tube pressure, and which is immediately behind a point of application of the maximum load along a direction in which the crank pin rotates relative to the sub connecting rod. Accordingly, it is possible to prevent leak of oil from the oil supply hole and thereby reliably lubricating the position between the connection tubular part of the sub connecting rod and the crank pin by a splash lubrication system. | 11-26-2009 |
| 20090320803 | CONTROL METHOD FOR A VARIABLE COMPRESSION ACTUATOR SYSTEM - A control system for an adjustment device for a variable compression ratio engine comprising: a jack head, a jack piston, a sprocket wheel, a movable transmission member, and a control valve. The jack piston is received within a chamber of the jack head defining first and second fluid chambers. The control valve controls the flow of fluid between the first and second fluid chambers. Based on the position of the control valve, fluid flows from the first fluid chamber to the second fluid chamber or vice versa, moving the control rack connecting the jack piston to the sprocket wheel. Reciprocating motion of the sprocket wheel adjusts the position of the cylinder of the engine. | 12-31-2009 |
| 20100000497 | Variable Compression Ratio Apparatus - A variable compression ratio apparatus may include a connecting rod rotatably connected to the piston so as to receive the combustion force therefrom, a pin link mounted to the crankshaft and rotatably connected to the connecting rod so as to receive the combustion force from the connecting rod and rotate the crankshaft, a connecting link rotatably coupled to the pin link and changing a rotation trace of the pin link with respect to a rotation axis of the crankshaft, an eccentric camshaft provided with first and second shaft portions eccentric from each other and configured to rotate by a predetermined angle according to a driving condition of the engine, a sub control link rotatably connected to the eccentric camshaft about the first shaft portion and rotatably connected to the connecting link, and a main control link rotatably connected to the eccentric camshaft about the second shaft portion and rotatably connected to the connecting link. | 01-07-2010 |
| 20100006069 | VARIABLE STROKE ENGINE - In a variable stroke engine comprising a plurality of links ( | 01-14-2010 |
| 20100006070 | Variable Compression Ratio Apparatus and Engine Using the Same - A variable compression ratio apparatus, and an engine using the same, is configured to change the compression ratio of an air-fuel mixture in a combustion chamber according to a driving condition of an engine. The variable compression ratio apparatus may be mounted at an engine receiving a combustion force of an air-fuel mixture from a piston so as to rotate a crankshaft disposed between cylinder blocks, wherein the variable compression ratio apparatus changes the compression ratio of the air-fuel mixture by changing the mounting height of the crankshaft according to a driving condition of the engine. | 01-14-2010 |
| 20100012094 | ENGINE WITH VARIABLE LENGTH CONNECTING ROD - A four-cycle internal combustion engine comprising a variable length connecting rod, two crank gears, and two drive gears; the first end of the connecting rod is connected to a piston; the second end of the connecting rod is connected to a yoke assembly comprising two arms, a first connecting shaft, and two second connecting shafts; the first connecting shaft connects the second end of the connecting rod to each of the yoke arms; the second end of the connecting rod and the yoke arms rotate freely about the first connecting shaft; each crank gear comprises an off-center hole; the second connecting shafts connect the yoke arms to the off-center hole of each crank gear; the yoke arms and the crank gear rotate freely about the second connecting shaft; and each crank gear is driven by a drive gear. | 01-21-2010 |
| 20100012095 | INTERNAL COMBUSTION ENGINE WITH IMPROVED FUEL EFFICIENCY AND/OR POWER OUTPUT - An internal combustion engine may include a bushing defining an external circumferential diameter and an aperture defining an internal circumferential diameter. A center defined by the external circumferential diameter and a center defined by the internal circumferential diameter are offset with respect to one another. The internal circumferential diameter is operably coupled to a crankpin, and the external circumferential diameter is operably coupled to a connecting rod, thereby operably coupling the connecting rod to the crankpin. The engine may further include a bushing control assembly, wherein the bushing control assembly is configured to delay initiation of a power stroke of the engine until a crankshaft of the engine has rotated at least about 15 degrees beyond a first stroke termination angle of a compression stroke of the engine. | 01-21-2010 |
| 20100018504 | VARIABLE STROKE ENGINE ASSEMBLY - In a variable stroke engine assembly for a front engine, front wheel drive vehicle, an engine output shaft (OS), a variable stroke control mechanism ( | 01-28-2010 |
| 20100050992 | VARIABLE STROKE ENGINE - In a variable stroke internal combustion engine, by determining the relationships of a connecting point (D) between a first link ( | 03-04-2010 |
| 20100108037 | PRESSURIZED AIR VARIABLE COMPRESSION RATIO ENGINE SYSTEM - A system for controlling a variable compression ratio in an engine is provided The system includes a cylinder, an outer piston located inside the cylinder, the cylinder and the outer piston collectively defining a combustion chamber, an inner piston, variably positioned inside the outer piston, the outer piston and the inner piston collectively defining an auxiliary chamber, a connecting rod including an air duct in fluid communication with the auxiliary chamber, and a crankshaft including an air passage in fluid communication with the air duct of the connecting rod during at least a portion of an engine cycle. | 05-06-2010 |
| 20100132671 | Variable Compression Ratio Apparatus - A variable compression ratio apparatus for varying a compression ratio, may include a connecting rod that is connected to a piston to take a combustion force; a pin link, one end of which is eccentrically connected to a crankshaft and the other end of which is pivotally connected to the connecting rod to form a connection portion therebetween; a slot link including a control slot to receive and guide the connection portion along the control slot; and a driving unit coupled to the slot link and configured to move the control slot to control a position of the connection portion. | 06-03-2010 |
| 20100132672 | Variable Compression Ratio Apparatus for Vehicle Engine - A variable compression ratio apparatus for a vehicle engine that is mounted at the engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft mounted between upper and lower cylinder blocks, and that changes compression ratio of the air-fuel mixture by changing a mounting height of the crankshaft according to a driving condition of the engine, may include a bearing having a hollow space eccentric to a center thereof and rotatably mounted between the upper and lower cylinder blocks, the crankshaft being rotatably inserted in the hollow space; and an operating unit provided at the lower cylinder block and controlling a rotational displacement of the bearing. | 06-03-2010 |
| 20100132673 | VARIABLE COMPRESSION RATIO APPARATUS FOR VEHICLE ENGINE - A variable compression ratio apparatus for a vehicle engine that is mounted at the engine and rotating a crankshaft mounted between upper and lower cylinder blocks, and that changes compression ratio of the air-fuel mixture by changing a mounting height of the crankshaft according to a driving condition of the engine, may include a supporter having a lower surface formed of a slanted surface and mounted between the upper and lower cylinder blocks, the crankshaft being rotatably inserted in the supporter through a bearing, an elastic member mounted at an upper portion of the supporter, a slider slidingly contacted to the slanted surface of the supporter and supported by the lower cylinder block, an operation unit applying operating force to the slider, and a power delivery unit connecting the slider with the operation unit and transmitting the operating force of the operation unit to the slider. | 06-03-2010 |
| 20100180868 | Mechanism for Internal Combustion Piston Engines - A rocking mechanism, through which linear reciprocating movement of a piston in a cylinder of an internal combustion engine can be transferred, from the remote end of a con rod on which the piston is mounted to a crankshaft, includes an oscillating device and a mounting device by which the oscillating device is mountable on a crankcase of the engine for reversible oscillating movement of the oscillating device on a first axis parallel to the crankshaft axis. The oscillating device is adapted for pivotally connecting to the little end of a further con rod having a big end connectable to the crankshaft for relative rotation, between the rocking mechanism and the further con rod, on a second axis offset from and parallel to the first axis. The oscillating device also is adapted for pivotally connecting to the remote end of the con rod on which the piston is mounted for relative rotation, between the rocking mechanism and said remote end, on a third axis offset from and parallel to each of the first and second axes. The first and third axes are substantially equidistant from the second axis and the oscillating device is pivotally connectable to the respective con rods so that the first axis and the crankshaft axis are positioned to opposite sides of an axis on which the piston is reversibly reciprocable. | 07-22-2010 |
| 20100186721 | VARIABLE STROKE CHARACTERISTIC ENGINE - A variable stroke characteristic engine is provided in which a piston ( | 07-29-2010 |
| 20100192915 | VARIABLE STROKE CHARACTERISTIC ENGINE - A variable stroke characteristic engine in which a piston ( | 08-05-2010 |
| 20100206270 | HYDRAULIC SUPPLY FOR A VARIABLE COMPRESSION RATIO ENGINE - The hydraulic supply for a variable compression ratio engine includes a compressed-air oil pressure accumulator ( | 08-19-2010 |
| 20100218744 | Engine and a selectively movable assembly incorporating the engine and a method for concomitantly increasing both the output torque and the efficiency of an internal combustion engine - A selectively movable assembly | 09-02-2010 |
| 20100218745 | BALL-LIFT DEVICE WITH SCREW FOR A VARIABLE COMPRESSION RATIO ENGINE - A ball-lift device with screw for a variable compression ratio engine having a hydraulic double-acting control actuator ( | 09-02-2010 |
| 20100218746 | BALL-LIFT ELECTROHYDRAULIC VALVE FOR A HYDRAULIC POWER UNIT OF A VARIABLE COMPRESSION RATIO ENGINE - The ball-lift electrohydraulic valve for a hydraulic power unit of a variable compression ratio engine includes:
| 09-02-2010 |
| 20100288237 | BALL-LIFT COMPRESSION RATIO ADJUSTMENT DEVICE FOR A VARIABLE COMPRESSION RATIO ENGINE - A device for adjusting the compression ratio of a variable compression ratio engine including a hydraulic double-acting control actuator ( | 11-18-2010 |
| 20100300410 | VARIABLE STROKE AND COMPRESSION RATIO ENGINE - A variable stroke and compression ratio engine employs multiple pistons connected to a wobbler. A crank with an axis of rotation has an upper journal with a first angle relative to the axis and a lower journal with a second angle with respect to the axis. A cradle connected for rotational motion with respect to the wobbler is carried by the crank with sliding engagement to the upper and lower journals for translation between a first high eccentricity position and second low eccentricity position. | 12-02-2010 |
| 20100326404 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a cylinder block and a mounting hole formed at a side surface thereof; a connecting rod pivotally connected to the piston; a crankshaft provided with a central axis, a bearing seat coaxially disposed with the central axis, and a crank pin formed in a crank arm connecting the bearing seat with the central axis of the crank pin eccentrically, wherein the crank pin is rotatably connected to the connecting rod; and an eccentric bearing provided with a bearing central axis and a crank mounting hole formed eccentrically to the bearing central axis, the crank mounting hole of the eccentric bearing being rotatably coupled to the bearing seat rotatably inserted in the crank mounting hole, wherein the eccentric bearing changes the compression ratio by controlling a distance between the central axis and a combustion chamber according to driving condition of the vehicle. | 12-30-2010 |
| 20110005496 | CONTROL APPARATUS FOR A CYLINDER DIRECT-INJECTION INTERNAL COMBUSTION ENGINE - A control apparatus is provided for a four stroke cylinder direct-injection internal combustion engine having a cylinder and a piston disposed within the cylinder. The control apparatus includes a variable compression ratio mechanism for variably controlling the engine compression ratio by changing the top dead center position of the piston and a fuel injection device for injecting fuel directly into the cylinder. When the actual compression ratio of the engine is higher than a target compression ratio, the variable compression ratio mechanism reduces the compression ratio, and in accordance with the reduction in the compression ratio, the fuel injecting device injects an intake fuel injection amount in the intake stroke and a compression fuel injection amount in the compression stroke, and the timing for starting the fuel injection in the compression stroke is retarded. | 01-13-2011 |
| 20110023834 | INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO - A piston coupler, such as a piston pin, is pivotally coupled to a piston such that the piston can pivot about a first axis relative to the piston pin. A connecting rod is coupled to the coupler for pivoting about a second axis. The relative positions of the first and second axes can be shifted by pivoting an eccentric portion of the piston pin to thereby vary the compression ratio of a piston cylinder within which the piston slides. An adjuster retainer is coupled to the piston or to the connecting rod. A combustion ratio adjuster (CRA) is coupled to the adjuster retainer. A biasing member couples the CRA to the piston pin. The CRA being selectively pivoted from first to second positions in response to shifting of a pivot member. Pivoting the CRA loads the biasing member with energy for use in turning the piston pin to adjust the compression ratio. The CRA is pivoted as the piston approaches the bottom dead center (BDC) position and the piston pin is turned after the piston travels away from the BDC position. | 02-03-2011 |
| 20110048382 | RACK GEAR VARIABLE COMPRESSION RATIO ENGINES - Improved rack-gear variable compression ratio engines. | 03-03-2011 |
| 20110048383 | VARIABLE COMPRESSION RATIO ENGINE - An eccentric ring is interposed between the big end bearing of the connecting rod and the crankpin. | 03-03-2011 |
| 20110079200 | VARIABLE COMPRESSION RATIO DEVICE - A variable compression ratio device having a piston, a crankshaft, a connecting rod including a small end portion connected to the piston, may include a piston pin fixed to the connecting rod and fixed thereto, a receiving hole formed inside the piston and rotatably receiving the piston pin, wherein the receiving hole includes a convex portion and a concave portion, at least a variable pin slidably coupled to the piston pin and slidably coupled to the interior circumference of the receiving hole, wherein the at least a variable pin has a protrusion, and an oil supply passage selectively supplying oil to apply hydraulic pressure to the at least a variable pin, wherein the protrusion of the at least a variable pin is selectively coupled to the convex portion or the concave portion of the receiving hole. | 04-07-2011 |
| 20110108006 | VARIABLE COMPRESSION RATIO DEVICE - A variable compression ratio device including a piston, a crankshaft, and a connecting rod may include an eccentric bearing that contacts an exterior circumference of the piston pin, wherein an exterior circumference of the eccentric bearing contacts an interior circumference of a ring formed at the small end of the connecting rod, a ratchet rod slidably coupled inside the piston pin and movable along a longitudinal direction, a variable slider that selectively contacts one of both ends of the ratchet rod, and that is disposed at both sides of a cylinder for pushing the one of both ends of the ratchet rod in an opposite direction, and a guide plate for reciprocally moving both variable sliders along a vertical direction of the ratchet rod. | 05-12-2011 |
| 20110120421 | Variable compression ratio system for internal combustion engines and method of varying compression ratio - A system for adjusting a compression ratio of an internal combustion engine, includes a piston position adjusting mechanism having a lever pivotably mounted on each of the connecting rods, adapted and configured to pivot when actuated, a cam, rotatably mounted with respect to each of one or more pistons and respective connecting rods, adapted and configured to maintain, at any moment, one of a plurality of spacings therebetween, rotation of the cam by a preselected angle causing a change in relative spacing between the head of the respective piston and small end of the connecting rod. The trigger is adapted and configured to cause pivoting of the lever, engagement between the cam and the lever, and rotation of the cam by the preselected angle. | 05-26-2011 |
| 20110126806 | VARIABLE COMPRESSION RATIO DEVICE - A variable compression ratio device that includes a piston, a piston pin, and a connecting rod of which one end is connected to the piston by the piston pin, may include an eccentric ring rotatably coupled in a ring at the one end of the connecting rod, wherein the inner circumference thereof rotatably contacts with the outer circumference of the piston pin, an operating pin that longitudinally reciprocates in the piston pin, variable sliders that selectively contact one of both ends of the operating pin under a cylinder to push the one of both ends to the opposite side, and a guide plate that slidably supports the variable sliders, wherein, one end of a variable shaft selectively rotating is connected to the variable slider and a sliding direction of the variable slider is controlled by the rotation of the variable shaft. | 06-02-2011 |
| 20110155106 | INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO - In one form of variable compression ratio engine, a connecting rod of an internal combustion engine is coupled to the rod receiving crank shaft by an eccentric connecting rod bearing. Pivoting of an eccentric portion of the eccentric connecting rod bearing relative to the crank shaft pin by a compression ratio adjuster varies the compression ratio of the engine. Resistance is provided to the pivoting of the eccentric portion in the absence of a compression ratio adjustment force. Pivoting of the eccentric can be delayed until tension and compression forces in the connecting rod are at a reduced level. The compression ratio can be continuously varied over a range from low to high values within limits of the structural components of the system to allow greater control of the compression ratio. | 06-30-2011 |
| 20110192379 | INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO - A coupler, such as a piston pin, is pivotally coupled to a piston such that the piston can pivot about a first axis relative to the coupler. The pivot pin can take various forms with unique combinations of features. A connecting rod is coupled to the coupler for pivoting about a second axis. The relative positions of the first and second axes can be shifted by pivoting an eccentric portion of the coupler to thereby vary the compression ratio of a piston cylinder within which the piston slides. The coupler comprises a pivot member engager portion that is selectively shifted from first to second positions to vary the compression rates in response to shifting of a pivot member. The pivot member engager is shifted from first to second positions as the piston approaches the bottom dead center position. The pivot member and pivot member engager disengage from one another as the piston travels away from the bottom dead center position. | 08-11-2011 |
| 20110226220 | INTERNAL COMBUSTION ENGINE WITH HYDRAULICALLY-AFFECTED STROKE - An internal combustion engine may include a cylinder block defining a cylinder and a crankshaft having a crankpin. The crankshaft is rotatably received by the cylinder block and rotates along a longitudinal axis, and the crankpin defines a longitudinal axis parallel to and offset by a distance with respect to the longitudinal axis along which the crankshaft rotates. The engine may further include a piston configured to reciprocate within the cylinder and a connecting rod operably coupled to the piston and the crankpin. At least one of the piston and the connecting rod is configured such that a distance between a cross-sectional center of the crankpin and an upper surface of the piston is variable via hydraulic operation. | 09-22-2011 |
| 20110277732 | ENGINE STRUCTURE HAVING CONJUGATE CAM ASSEMBLY - An engine structure having a conjugate cam assembly is provided and includes a piston which can be used to push or pulled by the conjugate cam assembly mounted on a camshaft through a connection rod, a roller rocker and two rollers. The conjugate cam assembly has two cams with cam profiles and relative arrangement angle which can be varied according to actual operational desire, so as to vary the ratio of intake/exhaust strokes and the ratio of compression/power strokes. Thus, the combustion efficiency and the exhaustion efficiency can be enhanced. When the camshaft finishes four strokes of an operational cycle, the camshaft only rotates one circle (i.e. 360 degree), so that the rotation speed of the camshaft can be lowered. | 11-17-2011 |
| 20110303193 | HIGH EFFICIENCY INTERNAL COMBUSTION ENGINE - The present invention is an improved high efficiency internal combustion engine (IHEICE) which results in higher efficiency due to its design, or respective relation of its parts. In the IHEICE, the energy fuel produced after combustion is harnessed and exploited to its highest potential when the engine starts exploiting the power after extended Top Down Center (ETDC). The main improvement in the IHEICE is the fitting and arrangement of the piston connecting rod and the crank; that is, the arrangement of the piston with respect to the crank, with the internal fitting design being the same. In the traditional arrangement, a problem is created in exploiting power from 60 degrees and beyond because a displacement (gap) is created inside the head resulting from the downward movement of the piston ( | 12-15-2011 |
| 20120000444 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a connecting rod rotatably connected to the piston and the other end being eccentrically and rotatably connected to the crankshaft, an eccentric bearing link, a control link having both ends and a middle portion, the one end being rotatably connected to the other end of the eccentric bearing link, a first shake link having both ends, the one end being rotatably connected to the middle portion of the control link, a second shake link having both ends, the one end being rotatably connected to the other end of the control link, and a control shaft eccentrically connected to a first eccentric cam rotatably connected to the other end of the first shake link and a second eccentric cam rotatably connected to the other end of the second shake link respectively, and rotating together with the first and second eccentric cams. | 01-05-2012 |
| 20120042854 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a connecting rod provided with one end formed of a mounting hole and the other end eccentrically and rotatably connected to a crankshaft, wherein a piston pin may be inserted in the mounting hole and the connecting rod may be rotatably connected to the piston through the piston pin, an eccentric link provided with an eccentric bearing concentrically and rotatably mounted in the mounting hole may be connected and, the piston pin being eccentrically and rotatably mounted in the eccentric bearing, a variable link pivotally connected to the eccentric link, a variable gear link pivotal with respect to a fixed shaft and having a first gear teeth at an exterior circumference thereof, an external circumferential portion thereof being rotatably connected to the variable link, and a control shaft formed of a second gear teeth engaged to the first gear teeth. | 02-23-2012 |
| 20120118270 | Variable Compression Ratio Apparatus - A variable compression ratio apparatus may be mounted at an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and may change compression ratio of the air-fuel mixture. The variable compression ratio apparatus includes a connecting rod having a small end and a big end, the small end being formed of an eccentric bearing hole concentrically so as to be rotatably connected to the piston through a piston pin, and the crankshaft is rotatably mounted at the big end, an eccentric link having one end to which an eccentric bearing rotatably mounted in the eccentric bearing hole concentrically is connected, an eccentric link slot being formed along a length direction thereof, a variable bar formed of a variable bar gear at one end portion thereof, and connected to the eccentric link through a variable bar pin movable along the eccentric link slot, and a variable gear engaged with the variable bar gear so as to move the variable bar to a predetermined direction reciprocally, wherein a piston pin hole is formed at the eccentric bearing eccentrically, and the piston pin is inserted in the piston pin hole such that the piston, the connecting rod, and the eccentric link are rotatably connected to each other. | 05-17-2012 |
| 20120125297 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus for an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and for changing compression ratio of the air-fuel mixture. The apparatus may include a connecting rod including one end with a mounting hole and an other end eccentrically and rotatably connected to the crankshaft, an eccentric link including one end connected to an eccentric bearing concentrically and rotatably mounted in the mounting hole, a piston pin eccentrically and rotatably mounted in the eccentric bearing, a variable link including one end rotatably connected to an other end of the eccentric link, a variable gear link pivoting with respect to a fixed shaft and formed of first gear teeth at an exterior circumference, an external circumferential portion rotatably connected to an other end of the variable link, a control shaft including second gear teeth engaged to the first gear teeth and rotating to pivot the variable gear link, and a guide bar, together with the connecting rod, limiting horizontal movement of the eccentric link. | 05-24-2012 |
| 20120145128 | VARIABLE COMPRESSION RATIO V-TYPE INTERNAL COMBUSTION ENGINE - A variable compression ratio V-type internal combustion engine joins the cylinder blocks of two cylinder groups together and makes the joined cylinder blocks move relative to a crankcase. The variable compression ratio V-type internal combustion engine includes a first relative movement mechanism and a second relative movement mechanism. The first relative movement mechanism and the second relative movement mechanism can be independently controlled, and a first relative movement distance at one cylinder group side of the cylinder block in the direction of the centerline of the engine which passes through the center of the crank shaft as seen in the front plan view caused by the first relative movement mechanism and a second relative movement distance at the other cylinder group side of the cylinder block in the direction of the centerline of the engine caused by the second relative movement mechanism are able to made different. | 06-14-2012 |
| 20120160216 | Variable Displacement Engine - A variable displacement engine includes sets of concentric gears with the crankshaft connected through gear trains to control the crankshaft radius and the piston rod length. One or more servos control the crankshaft concentric gears through gear trains to thus control the crankshaft radius and piston rod length, thereby controlling the engine displacement while maintaining compression ratio, and optionally controlling compression ratio independently. | 06-28-2012 |
| 20120174895 | Variable compression ratio engine tubular control valve - A tubular valve for adjusting the compression ratio of a variable compression ratio engine includes:
| 07-12-2012 |
| 20120210983 | VERTICAL, MULTI-LINK, ADJUSTABLE-STROKE TYPE ENGINE - A vertical, multi-link, adjustable-stroke type engine includes a lubricating oil passage provided in a cylinder barrel for supplying lubricating oil to a lower shaft end portion of a crankshaft and at least a lower shaft end portion of an eccentric shaft, which changes an intake stroke and compression stroke of a piston, so as to pre-press the crankshaft and the eccentric shaft in a predetermined direction, or for supplying lubricating oil to the lower shaft end portion of the eccentric shaft so as to pre-press the eccentric shaft in a predetermined direction. | 08-23-2012 |
| 20120260890 | VARIABLE COMPRESSION RATIO V-TYPE INTERNAL COMBUSTION ENGINE - The present variable compression ratio V-type internal combustion engine is a variable compression ratio V-type internal combustion engine which joins cylinder blocks of two cylinder groups and makes the joined cylinder block move relatively to a crankcase, wherein the engine is provided with a first relative movement mechanism which is fastened to a first cylinder group side of the joined cylinder block through a plurality of supports and a second relative movement mechanism which is fastened to a second cylinder group side of the joined cylinder block through a plurality of supports. The number of the supports in each of the first relative movement mechanism and the second relative movement mechanism is made at least a number greater by exactly one than the number of cylinders of the first cylinder group and the second cylinder group, respectively. | 10-18-2012 |
| 20120291755 | VARIABLE STROKE MECHANISM FOR INTERNAL COMBUSTION ENGINE - A mechanism for varying the stroke length of an internal combustion engine during each cycle of operation includes a gear set with a first gear non-rotatably mounted to the engine block and a second gear having teeth formed on an inner surface thereof meshing with the first gear to achieve a uniform mechanical crank arm and a variable cam arm for producing a varying length of piston reciprocation throughout the overall stroke cycle of the engine. The orientation of the crank arm and the cam arm relative to the axis of piston reciprocation is selected for causing the crank arm and the cam arm to cooperatively produce a positive torque on the crankshaft at the top dead center position of the piston. The gear set is also selectively configured and dimensioned to achieve a predetermined ratio of the length of the cam arm to the length of the crank arm. | 11-22-2012 |
| 20130042837 | VARIABLE COMPRESSION RATIO APPARATUS WITH DUAL ECCENTRIC LINKS - A variable compression ratio (VCR) apparatus with dual eccentric links is mounted on an engine, receives combustion power of a fuel-air mixture from a piston to rotate a crank shaft and changes a compression ratio of the fuel-air mixture. The VCR apparatus may include a connecting rod having a large end portion formed at one end thereof, which is connected to the crank shaft to receive a torque of the engine, and a small end portion formed at the other end thereof, the small end portion having a coupling hole formed therein, a pair of eccentric links having one ends coupled to the coupling hole from both sides facing each other and integrally rotating, and an eccentric rod connected to the other ends of the eccentric links and rotating within a predetermined angle range. The eccentric rod may be a pair of eccentric rods. | 02-21-2013 |
| 20130118454 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio (VCR) apparatus, may include a piston forming a combustion chamber, a connecting rod having one end rotatably coupled to the piston through a piston pin so as to transmit a motion of the piston to a crank shaft, dual eccentric links having one ends eccentrically connected to the one end of the connecting rod through the piston pin, and dual swing links having one ends pivotally connected to the other ends of the eccentric links, respectively, so as to pivot the eccentric links with respect to the piston pin. | 05-16-2013 |
| 20130118455 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio (VCR) apparatus, may include a piston, a connecting rod having one end coupled to the piston through a piston pin so as to transmit a motion of the piston to a crank shaft, a pair of first and second eccentric links having one ends eccentrically connected to the one end of the connecting rod through the piston pin, dual swing links having one ends connected to the other ends of the first and second eccentric links, respectively, so as to pivot the eccentric links with respect to the piston pin, and connecting assembly connecting the one ends of the first and second eccentric links each other. | 05-16-2013 |
| 20130133625 | CRANKSHAFTLESS INTERNAL COMBUSTION ENGINE - Included may be a crankshaftless internal combustion engine, including a power shaft unit in which a transferring path of a power system may be selected depending on a deactivated state and an activated state of a cylinder, a cylinder separator separating a power system of the deactivated cylinder from the power shaft unit by control of an ECU operated by a deactivated cylinder and an activated cylinder, and a compression changing unit varying a compression ratio of the activated cylinder in multistage. | 05-30-2013 |
| 20130133626 | CRANKSHAFTLESS INTERNAL COMBUSTION ENGINE - A crankshaftless internal combustion engine includes a power shaft unit in which a transferring path of a power system is selected depending on a deactivated state and an activated state of a cylinder and a cylinder separator separating a power system of the deactivated cylinder from the power shaft unit by control of an ECU, thereby improving fuel efficiency due to a uniform change in volume of a combustion chamber of the cylinder and increasing reduction in Nox of exhaust gas, and particularly, a plurality of cylinders are controlled in a variable cylinder scheme to further improve fuel efficiency and be optimal to even EM improvement. | 05-30-2013 |
| 20130160744 | NEW INTERNAL COMBUSTION ENGINE AT ALTERNATING CYCLE WITH CONTROLLED VARIABLE COMPRESSION RATIO-CVCR - The mechanic system in object uses the new structure of the crank mechanism assembly, for internal combustion engines at alternating cycle, without modifying the cycle. The system, places instead of traditional connecting rod a new system. The system allows using two coaxial pistons with the opposite head, acting in the same cylinder and has opposed combustion chambers. The system then replace the classical three elements for piston (piston, connecting rod and crankshaft), with a system that can be considered to be composed of four elements for two Pistons with an evident general kinematic savings. The salient features of the system are: 1. Reduced lateral piston friction on the cylinder; 2. Reduction of General weights of the crankshaft assembly; 3. Lack of sucking effect resulting in better efficiency; 4. The new system of transmission is composed of two parts. that allows controlling the compression ratio and NOK. The proposed system tends to maintain optimal compression ratio between the volume of air/fuel mixture, and the volume of the combustion chamber 5. The system is governed by a hydraulic circuit, the RC as determined by the program's control unit that controls the real pistons position through an electromagnetic sensors. 6. The system, wanting to get higher specific power, allow to use even the NOK, indeed on the practice experimentation it was found that the RC can significantly exceed the maximum permissible RC which fuel is used, while in a conventional engine, owing to its rigidity, when the NOK happens the piston MUST reach the TDC creating conflicting forces, that create overpressure which tend to lock the engine and compromise its integrity with pressure of more than 200 bar. In the case of the new system these pressures can be controlled keeping them in limits (120/130 bar). 8. The system (which is calculated and prearranged for each specific engine type) in addition to the compression ratio change the intake capacity of Pistons which when the rpm increase make a bigger intake stroke; 9. The decrease of the rotating masses and the symmetrical position of opposed pistons with a cycle of explosions at 90° degrees on the same axis and on the same plane decreases drastically the vibrations of the first level and exclude the need of important stabiliser flywheel for the continuity of the cycle with a reduction of weight and mass; 10. The drive shaft of very small size (⅓ of the conventional drive shaft) decrease twists and longitudinal bending couple reducing vibrations of 2nd level. The small size of drive shaft reduces the couple of rotation of the engine reducing friction and fuel of materials consumption too; 11. The proximity of the cylinder and compactness of the crankshaft involve the reduction of the engine mounting (for 4 Pistons three engine mounting); 12. The placement of the connection point in the new system, changing where the forces of the Pistons are applied to the rod and crankshaft change the characteristics of the engine power, 13. The tiling and using of a single sliding cylinder for two pistons reduces the size of the engine drastically and, whereas practically all the cylinders can be wrapped from the coolant liquid, paradoxically, with a correct cooling system should improve the possibility of lubrication and cooling; 14. The system of electronic ignition must be calibrated in order to optimize the ignition considering the real RC and TDC at the moment of the explosion; The purpose of the new crankshaft Assembly are those of producing engines with reduced fuel consumption, more compact and with torque and power best curves compared to the current engines. | 06-27-2013 |
| 20130199502 | CRANKSHAFT FOR AN INTERNAL COMBUSTION ENGINE - A crankshaft for an internal combustion engine comprises at least four main journals aligned on a crankshaft axis of rotation and at least three crankpins, each crankpin being disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between the crankpin and the pair of crank arms. Each pair of crank arms is joined to a respective main journal for transmitting torque between the pair of crank arms and the main journal. At least two of the crankpins are spaced radially a first semi-stroke distance from the crankshaft axis of rotation, and a third crankpin is spaced radially a second semi-stroke distance from the crankshaft axis of rotation. | 08-08-2013 |
| 20130247879 | COMBUSTION ENGINE WITH STEPWISE VARIABLE COMPRESSION RATIO (SVCR) - The compression ratio of an internal combustion engine is adjustable in a stepwise fashion, such as by pivoting an extension of an eccentric connecting rod bearing. The projection extends into a chamber defined by a portion of a connecting rod coupling portion of a connecting rod assembly. Liquid is delivered to one side of the projection and removed from the opposite side of the projection to move the projection and thereby the eccentric connecting rod bearing from one position corresponding to one compression ratio to another position corresponding to another compression ratio. | 09-26-2013 |
| 20130306035 | VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - A variable compression ratio internal combustion engine includes a variable compression ratio mechanism, an actuator and a linking mechanism. The actuator is varies and maintains a rotational position of the first control shaft. The linking mechanism includes a second control shaft and a lever. The second control shaft is selectively turned by the actuator. The lever links the second control shaft to the first control shaft such that transference of vibration of the first control shaft to the second control shaft is suppressed. The first control shaft is pivotally linked to a first end of the lever by a first linking pin. The second control shaft is pivotally linked to a second end of the lever by a second linking pin. | 11-21-2013 |
| 20130312710 | VARIABLE COMPRESSION RATIO APPARATUS WITH RECIPROCATING PISTON MECHANISM WITH EXTENDED PISTON OFFSET - A variable compression ratio apparatus with means to vary compression ratio of an internal combustion engine is provided. The variable compression ratio apparatus with reciprocating piston mechanism with extended piston offset of the invention has a rocker arm/lever assembly pivotally mounted on a crankpin of a crankshaft and a fulcrum which moves along only within confines of a pathway/guide. This confined pathway/guide itself can be either pivoted to swing from side to side on a pivot or can move only along a predefined path towards the crankshaft and away in its own defined tracks. A swing or move of the pathway/guide leads to a corresponding change in stroke positions of the piston within the cylinder. Such construction allows a simple and easy way to vary compression ratio of the engine. At the same time all benefits of the reciprocating piston mechanism with extended piston offset are preserved. | 11-28-2013 |
| 20130333670 | RECIPROCATING PISTON ENGINE WITH VARIABLE COMPRESSION RATIO - In a reciprocating piston engine with a variable compression ratio in which a piston is movably disposed in a cylinder, an adjustment arrangement is provided for controlling the compression ratio of the engine including an adjusting part supported by a guide element depending on a signal provided by a detection means comprising a transducer part arranged on the adjusting part and a corresponding detection part, arranged on a housing part of the engine in connection with a control unit in which a desired momentary compression ratio setting is determined on the basis of a characteristic diagram stored in the control unit. | 12-19-2013 |
| 20140014070 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus mounted on an engine may include an eccentric bearing assembly engaged with the piston through a piston pin, and including an eccentric ring having an eccentric hole so that the piston pin may be rotatably installed therethrough while being eccentric to the eccentric ring, and an eccentric link connected to the eccentric ring to transfer rotation force to the eccentric ring, a first connecting rod rotatably installed at an one side in an axial direction of the eccentric ring, a second connecting rod rotatably installed at the other side in the axial direction of the eccentric ring, and a control shaft connected to the eccentric link to rotate the eccentric bearing assembly by transferring the rotation force to the eccentric ring. | 01-16-2014 |
| 20140014071 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus mounted on an engine configured to receive combustion force of a mixer from a piston to rotate a crankshaft, and configured to change a compression ratio of the mixer may include an eccentric bearing assembly connected with the piston through a piston pin, and including an eccentric ring including an eccentric hole through which the piston pin passes so that the piston pin may be rotatably installed while being eccentric to the eccentric ring, and an eccentric link connected to the eccentric ring to transfer rotation force thereof to the eccentric ring, a connecting rod including one end provided with a mounting hole into which the eccentric ring may be rotatably inserted, a central portion provided with an operation hole, wherein the eccentric link may be movable through the operation hole, and the other end rotatably connected to the crankshaft while being eccentric to the crankshaft, and a control shaft connected to the eccentric link and configured to rotate the eccentric bearing assembly. | 01-16-2014 |
| 20140020660 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a connecting rod having a small end portion having an eccentric bearing installation hole, a large end portion rotatably connected to the crank shaft, and a space portion formed in a longitudinal direction of the connecting rod and communicated with the eccentric bearing installation hole, a piston pin fixedly, an eccentric bearing rotatably engaged to the eccentric bearing installation hole and coupled to the piston pin through a pin installation hole of the eccentric bearing, wherein the piston pin may be offset from a center axis of the eccentric bearing, an eccentric link connected to the eccentric bearing, a variable link rotatably connected to the eccentric link, a control link rotatably connected to the variable link, and a control shaft provided in the control link to rotate the control link, wherein the eccentric link may be rotated within the space portion. | 01-23-2014 |
| 20140096747 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus includes: a piston defining a combustion chamber, a connecting rod connected to the piston; an eccentric link eccentrically connected to the piston, a swing link connected to the eccentric link so as to rotate the eccentric link, a crankpin to which the connecting rod is connected, and a crank web disposed at both sides of the crankpin and provided with a guide portion for guiding downward motions of the eccentric link and the swing link when the eccentric link and the swing link move downward. Thereby, the downward motions of the eccentric link and the swing link are stabilized. | 04-10-2014 |
| 20140096748 | Device for Changing a Compression Ratio of a Reciprocating Piston Internal Combustion Engine - A device for changing a compression ratio of an internal combustion engine is provided. The engine has a crank drive with a crankshaft with at least one crank pin, mounted in a rotationally movable fashion, connected to a connecting rod and a piston arranged in a cylinder of the internal combustion engine. In order to convert rotational movement of the crankshaft into a bidirectional movement of the piston with a defined stroke height, a rotationally movable, externally toothed eccentric for changing the piston stroke height is arranged between the crank pin and an eyelet on the connecting rod. In order to rotate the eccentric, an externally toothed first gearwheel is axially connected in a rotationally fixed fashion to a second gearwheel via a shaft arranged parallel to the crankshaft which is arranged in a meshing fashion on a third gearwheel which can be rotated by an actuating element. | 04-10-2014 |
| 20140123957 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a crankshaft, a connecting rod, first and second eccentric links mounted at both sides of the connection rod, respectively, and having one ends at which the piston pin may be eccentrically and rotatably installed, a swing link of which one end may be branched into two parts to form first and second branches, the first and second branches being connected to the other ends of the first and second eccentric links, and a control device connected to the other end of the swing link to control the swing link, wherein the crank arm includes guide surfaces formed in a predetermined thickness at an inner circumferential surface of the crank arm so that the first and second branches of the swing link slide to move between the guide surfaces. | 05-08-2014 |
| 20140137843 | INTERNAL COMBUSTION ENGINE WITH VARIABLY TIMED TRANSMISSION - Internal combustion engine comprising a cylinder housing component ( | 05-22-2014 |
| 20140326219 | VARIABLE COMPRESSION RATIO ENGINE - A system and method for providing a variable compression ratio internal combustion engine is disclosed. The system can include a crankshaft pivotally coupled to a standard engine block using a plurality of pivoting main bearing caps. The system can pivot the main bearing caps, and thus the crankshaft, to increase or decrease the compression ratio of the engine. The system can also include a plurality of actuators to move one end of the main bearing caps. The crankshaft can comprise one or more flexible joints to enable the crankshaft to move, while the output(s) of the crankshaft remain stationary to enable conventional sealing and power take-off. The compression ratio can be varied continuously during use and can be included in an overall engine management system. | 11-06-2014 |
| 20140326220 | MECHANICAL SYSTEM OF LINKING TO THE MASTER CONNECTING ROD FOR TRANSMISSION OF THE MOTION OF THE PISTONS OF AN INTERNAL COMBUSTION ENGINE TO CONTROL AND CHANGE THE COMPRESSION RATIO - The present invention relates to the reciprocating internal combustion engine sector and more specifically concerns a mechanical system of linking to the master connecting rod for transmission of the motion of the pistons of an internal combustion engine consisting of a lever, which can be completely rigid or made up of a flexible part and a rigid part, and a connecting rod connected to it that rotates a crankshaft; two coaxial pistons with opposed heads that act practically in the same cylinder and have opposed combustion chambers are connected by two small connecting rods at the top of the said lever, which has its fulcrum—fixed or moving—in the engine bedplate. | 11-06-2014 |
| 20140338641 | ELECTROHYDRAULIC DEVICE FOR CLOSED-LOOP DRIVING THE CONTROL JACK OF A VARIABLE COMPRESSION RATIO ENGINE - An electrohydraulic device for controlling the compression ratio of a variable compression-ratio engine, includes at least one dual-flow electrovalve ( | 11-20-2014 |
| 20140366847 | LINEAR ACTUATION FOR CONTINUOUSLY VARIABLE-STROKE CYCLE ENGINE - A variable-stroke reciprocating internal combustion engine, the engine having an engine shaft and a piston configured to reciprocate within a cylinder chamber having an axis, each piston having a first piston part operable to move in unison with or separately from a second piston part to define piston strokes for different thermal functions of the engine, includes an assembly pivotally coupled to the first piston part at a copy point and an actuator coupled to the assembly, wherein the actuator is operable to control motion of the assembly to thereby define substantially linear movement of the copy point along the cylinder chamber axis. | 12-18-2014 |
| 20150013648 | VARIABLE GEOMETRY POWER TRANSFER FOR FLUID FLOW MACHINES - A fluid flow machine includes a casing including a cylinder and a crankshaft support. A piston is slidably disposed in the cylinder for reciprocating along an axis of the cylinder. A crankshaft includes a main bearing journal rotationally supported in the crankshaft support, a crankpin radially offset from an axis of the main bearing journal and a crank web connecting the main bearing journal and the crankpin. A multi-linkage connecting rod mechanism is connected between the piston and crankpin and includes a connecting rod, a first hinge link and a crankpin link pivotally connected to each other. A force transfer mechanism connects the multi-linkage connecting rod mechanism to the casing for transferring a vertical piston force into a horizontal crankpin force. | 01-15-2015 |
| 20150040870 | Method for the Variable Adjustment of a Compression Ratio of a Combustion Chamber of an Internal Combustion Engine - A method for variably adjusting a compression ratio of combustion chamber of an internal combustion engine employs a device of a piston associated with the combustion chamber. The device is coupled via respective coupling areas to a piston pin for connecting the piston to a connecting rod of the internal combustion engine. To adjust the compression ratio the piston pin, which is associated with the device, is rotated relative to the piston. The piston pin includes at least one eccentric element arranged eccentrically with regard to the coupling area of the piston pin for connecting the piston pin to the connecting rod. | 02-12-2015 |
| 20150083084 | FRICTION REDUCTION AND VARIABLE COMPRESSION RATIO - Apparatus for increasing internal combustion engine efficiency by substantial reduction of the friction between piston and cylinder by using a piston rod with one degree of freedom and said degree of freedom being translational motion along the central axis of the cylinder and supporting the said piston rod by stationary roller/ball bearings or by non-stationary moving cylindrical rollers. Additionally enhancing the combustion by introducing an insert into head cylinder and controlling the volume of the cylinder chamber when the piston is at top dead center at the end of compression stroke; thus controlling the compression ratio of the engine by the position of the said insert. | 03-26-2015 |
| 20150096540 | VARIABLE COMPRESSION RATIO ENGINE - According to the present invention, a variable compression ratio engine includes a cylinder head and crankcase directly joined by a control shaft, thereby eliminating use of a link between the control shaft and cylinder head. The present invention has a low manufacturing cost and a small size ideal for mass production applications. In the preferred embodiment of the present invention, the control shaft includes a primary set of bearings and an eccentric set of bearings. The primary control shaft set of bearings are mounted directly in the crankcase assembly, and the eccentric control shaft bearings are mounted directly in the cylinder head assembly. There is only one control shaft per cylinder head, and there is no link between the control shaft and cylinder head assembly. The variable compression ratio mechanism also includes moment retaining means to prevent the cylinder head assembly from rotating out of alignment when the engine is running. The moment retaining means is a bushing that is mounted around the engine cylinder. The bushing provides the moment retaining means needed for holding the cylinder head assembly in alignment when the engine is running, and also provides displacement means, where the cylinder head assembly can slide on the bushing. The displacement means is needed to allow the cylinder head assembly to move relative to the crankcase when compression ratio is adjusted. | 04-09-2015 |
| 20150330298 | SWITCHOVER VALVE AND INTERNAL COMBUSTION ENGINE - An internal combustion engine with an adjustable compression ratio has a switchover valve ( | 11-19-2015 |
| 20150330314 | INTERNAL COMBUSTION ENGINE - An internal combustion engine includes at least one piston which can be axially displaced in a cylinder over a maximal stroke and a connecting rod device for adjusting the compression of the internal combustion engine, wherein the connecting rod device has a transverse lever which on one of its ends is connected by a first joint with a connecting rod which is articulately arranged in the piston and on its other end is connected by a second joint with an actuatable control lever, wherein the control lever is arranged pivotal about a third joint, and wherein the transverse lever is connected between the first joint and the second joint by a fourth joint with a crankpin of the crankshaft, which crankpin is spaced apart from a rotation axis of the crankshaft, wherein a lateral distance between the rotation axis of the crankshaft and the third joint in relation to the maximal stroke of the piston is at least −1.0, in particular −1.23 or −1.78. | 11-19-2015 |
| 20150354448 | INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO - It has variable compression ratio mechanism ( | 12-10-2015 |
| 20150354488 | INTERNAL-COMBUSTION-ENGINE CONTROL DEVICE AND CONTROL METHOD - An internal combustion engine ( | 12-10-2015 |
| 20150377120 | VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE - A variable compression ratio internal combustion engine is equipped with a variable compression ratio mechanism that changes an engine compression ratio depending on the rotational position of a first control shaft arranged in an oil pan, and an actuator that changes and holds the rotational position of the first control shaft, and a linking mechanism configured to link the actuator and the first control shaft. The linking mechanism has a lever linked to the first control shaft, and a connecting pin configured to rotatably link the tip of an arm part extending radially outward from the center of the first control shaft and one end of the lever. At least when having been set to the highest compression ratio, the first connecting pin is configured to be submerged below an oil level of the oil pan. | 12-31-2015 |
| 20160047301 | Variable Compression Ratio Engine - A system and method for providing a variable compression ratio internal combustion engine is disclosed. The system can include a crankshaft pivotally coupled to a standard engine block using a plurality of pivoting main bearing caps. The system can pivot the main bearing caps, and thus the crankshaft, to increase or decrease the compression ratio of the engine. The system can also include a plurality of actuators to move one end of the main bearing caps. The crankshaft can comprise one or more flexible joints to enable the crankshaft to move, while the output(s) of the crankshaft remain stationary to enable conventional sealing and power take-off. The compression ratio can be varied continuously during use and can be included in an overall engine management system. | 02-18-2016 |
| 20160061105 | APPARATUS WITH VARIABLE COMPRESSION RATIO AND VARIABLE EXPANSION RATIO - Apparatus with variable compression ratio and variable expansion ratio for an internal combustion engine, mounted on the engine crankshaft and the assembly of the piston-connecting rod, comprising an actuating motor, a worm, a worm gear, a sun gear, a first transmission shaft, a plurality of the transmission shafts, a first eccentric sleeve, a plurality of eccentric sleeve, a front gear of the first eccentric sleeve, a plurality of the front gear of the eccentric sleeve, a plurality of the rear gear of the eccentric sleeve, a planetary gear, the rear gear of the first transmission shaft, a plurality of the front gear of the transmission shaft, and a plurality of the rear gear of the transmission shaft. An angle α between the axis of the first transmission shaft and the axis of the crankshaft is not zero, the other axes of the transmission shafts with the axis of the crankshaft coincide, or parallel but do not coincide, or form a non zero angle. | 03-03-2016 |
| 20160102711 | CLIP-FASTENED RACEWAY FOR A VARIABLE COMPRESSION RATIO ENGINE - A clip-fastened raceway for a variable compression ratio engine includes: at least one curved segment whose outer surface cooperates with a raceway housed in the transmission member or in the control member of the variable compression ratio engine and whose inner surface is maintained in contact with a curved outer surface housed in the toothed wheel of the engine; at least one clip, housed in at least one of the ends of the curved segment and fastened to one or the other of the ends of the curved outer surface housed in the toothed wheel and hooking onto a hook or protrusion which the wheel includes in the vicinity of the end of its curved outer surface, the hook or protrusion being complementary to that of the clip so as to be able to cooperate with the latter. | 04-14-2016 |
| 20160138467 | BEARING STRUCTURE FOR MULTI-LINK-TYPE PISTON CRANK MECHANISM FOR INTERNAL COMBUSTION ENGINES - A crankshaft bearing part ( | 05-19-2016 |
| 20160177997 | VARIABLE LENGTH CONNECTING ROD AND VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE | 06-23-2016 |
| 20160252014 | OPPOSED-PISTON ENGINE HAVING A SINGLE CRANKSHAFT COUPLED TO THE OPPOSED PISTONS BY LINKAGES WITH PIVOTED ROCKER ARMS | 09-01-2016 |
| 20160252022 | CONTROL APPARATUS AND METHOD FOR INTERNAL COMBUSTION ENGINE | 09-01-2016 |
| 20170234215 | DEVICE FOR COMPENSATING FOR THE OPERATING CLEARANCES OF AN ENGINE | 08-17-2017 |
