Class / Patent application number | Description | Number of patent applications / Date published |
123900310 | Camshaft drive means | 32 |
20090044772 | ENGINE AND METHOD OF ASSEMBLING AN ENGINE - An engine is provided with features allowing a method of assembly that combines the ease of assembly of a net-assembled system with the positional accuracy of an index-assembled system in order to meet critical valve to piston clearance requirements, especially critical in a diesel engine. | 02-19-2009 |
20090107434 | Systems And Methods For Managing Camshaft Torsional Loading - Systems and methods for managing camshaft dynamic loads associated with actuation of a camshaft-driven auxiliary device in a multiple-cylinder internal combustion engine apply positive and negative torque to the camshaft in a phased relationship relative to actuation of the auxiliary device and optionally relative to actuation of intake or exhaust valves operated by the camshaft. | 04-30-2009 |
20090133653 | Spur gear drive for an internal combustion engine - In a spur gear drive for driving the camshaft of an overhead valve internal combustion engine wherein drive power is transmitted from the crankshaft to the camshaft via spur gears mounted on the crankshaft and the camshaft which is rotatably supported on the cylinder head, a third, intermediate, gear is adjustably supported in the power train between engine block-mounted gears and cylinder head-mounted gears so that changes in the distance between the crankshaft and the camshaft can be accommodated and, with the use of smaller gears, the spur gear drive becomes smaller and lighter overall. | 05-28-2009 |
20090139478 | RECIPROCATING PISTON INTERNAL COMBUSTION ENGINE AND METHOD FOR DETERMINING THE WEAR OF A TRANSMISSION ELEMENT ARRANGED BETWEEN A CRANKSHAFT AND A CAMSHAFT - A method for determining a wear value of a transmission element between a crankshaft and a camshaft of a reciprocating piston internal combustion engine, in particular a timing chain or toothed belt, is provided. The camshaft is driven by the transmission element via a drive part, for example a camshaft gearwheel. In each case, at least one measurement value for the phase position of the drive part relative to the crankshaft is determined at time intervals during which the crankshaft drives the camshaft, and the wear value is determined from the difference between the measurement values. | 06-04-2009 |
20090301419 | Decompression Mechanism - A decompression mechanism provided in a valve operating system configured to drive a valve for opening and closing a port, includes an accommodating member provided in the valve operating system; a decompression member which is accommodated in the accommodating member such that the decompression member is extendable and retractable, the decompression member being configured to extend from the valve operating system to press the valve to open the port in a compression stroke of the engine; and an insertion member which is inserted into the valve operating system, the insertion member being configured to be inserted through the accommodating member in a direction crossing a direction in which the decompression member is extendable and retractable. | 12-10-2009 |
20100000482 | ELECTROMAGNETIC ACTUATING APPARATUS - An electromagnetic actuating apparatus with an elongate actuating element ( | 01-07-2010 |
20100071646 | Engine - An engine includes: a crankshaft | 03-25-2010 |
20100071647 | MOTORCYCLE ENGINE - A motorcycle engine includes a cylinder block with an axis extending perpendicularly or slightly inclined forwardly. A cylinder head includes an intake port, an exhaust port disposed on a front surface of the cylinder head opposite the intake port, an engine hanger boss, a coolant temperature sensor mounting portion, and a cam chain tensioner lifter. The intake port has an outer opening having a center disposed on a level upward of a center of an outer opening of the exhaust port. The engine hanger boss is provided on either side of the cylinder head, has a centerline that crosses the intake port, and disposed upwardly of an upper end of the outer opening of the exhaust port. The cam chain tensioner lifter and the coolant temperature sensor are in an overlapping position in a side view, downwardly of the engine hanger boss and an open end of the intake port. | 03-25-2010 |
20100242885 | 4-STROKE CYCLE INTERNAL COMBUSTION ENGINE - A 4-stroke cycle internal combustion engine includes a breather chamber for separating blow-by gas and oil mist produced in the internal combustion engine. A vehicle-carried 4-stroke cycle internal combustion engine includes a valve chamber wherein a valve motion is accommodated between a cylinder head and a head cover, a cam chain chamber formed from the cylinder head and the cylinder head cover for accommodating a cam chain, a driven sprocket wheel around which the cam chain is wrapped, and a breather chamber formed between an upper portion of the head cover and the valve chamber. A barrier is formed in an arcuate shape opposing to and extending along an outer circumference of the driven sprocket wheel. The barrier is provided sidewardly of the driven sprocket wheel on the breather chamber side. | 09-30-2010 |
20110162607 | SINGLE POPPET VALVE CYLINDER HEAD ASSEMBLY FOR INTERNAL COMBUSTION ENGINE - A cylinder head assembly for an internal combustion engine having an intake cycle and an exhaust cycle is provided. The cylinder head assembly includes a single valve, a cylinder head body, and a venturi tube. The cylinder head body has an intake port, an exhaust port, and a combustion chamber port configured to intermittently seat the single valve. The venturi tube is disposed within the cylinder head body and has a high pressure portion operably coupled to the cylinder head body proximate the intake port and a distal end spaced apart from the combustion chamber port. The venturi tube permits the intake port to remain in fluid communication with the exhaust port during both the intake cycle and the exhaust cycle of the internal combustion engine. | 07-07-2011 |
20110209678 | INTERNAL COMBUSTION ENGINE WITH MODIFIED SHAFT - In one embodiment, an improvement to a four-stroke engine having a single cylinder block arrangement including an engine block, timing gears, crankshaft and gear, timing belt/chain, intake port, exhaust port, and cylinder head arrangement includes a ported rotating shaft, the ported rotating shaft having a first port, the ported rotating shaft synchronized with the crankshaft, such that the first port periodically aligns with the intake port to allow for intake during the four-stroke cycle. | 09-01-2011 |
20110220048 | Valve Operating Camshaft System For Internal Combustion Engine - A camshaft system includes a number of cam lobes locked upon a cylindrical shaft. Bearings configured with one-piece bores and are engaged with the cylindrical shaft. The bearings are captured upon the shaft by the locked-on cam lobes. | 09-15-2011 |
20110265748 | VARIABLE VALVE DEVICE - A variable valve device includes: a drive shaft ( | 11-03-2011 |
20110303173 | Assembled Camshaft - An assembled camshaft includes an outer hollow camshaft body and an inner camshaft body disposed within the outer hollow camshaft body and mounted so as to rotate relative to it by a predetermined angle. The camshaft also includes at least two separate cam elements. A first cam element is connected with the inner camshaft body so as to rotate with it, and is disposed so as to rotate relative to the outer hollow camshaft body. A second cam element has at least two partial cam elements, in such a manner that a first partial cam element is disposed on the outer hollow camshaft body, so as to rotate with it, and a second partial cam element is connected with the inner camshaft body, so as to rotate with it, and is disposed so that it can be rotated relative to the outer hollow camshaft body. | 12-15-2011 |
20120067314 | VALVE-MECHANISM-EQUIPPED ENGINE - A valve-mechanism-equipped engine having increased combustion efficiency is disclosed. The engine includes intake and exhaust rocker arms having a swing center line inclined relative to a rotation center line of a cam, and an intake valve and an exhaust valve inclined relative to a cylinder. A cam surface is inclined relative to the rotation center line of the cam. Slippers of the intake and exhaust rocker arms are in sliding contact with the cam surface. | 03-22-2012 |
20120067315 | CLUTCH OR BRAKE IN OR AT A GEARBOX - A clutch or brake with an electrically actuated switching coil and an armature that axially moves toward the switching coil and forms a connection with the switching coil and can rotate relative to the switching coil, in an adjustment system for camshafts of a combustion engine. A superposition transmission has an input driven by a crankshaft of the engine, a drive output element that drives a camshaft of the engine and a control element, by which relative rotation between the input and the output can be produced by applying a braking torque. The armature is rotationally fixed and axially slidable, and centered on or at a transmission component, and the switching coil is rotationally fixed and centered coaxially with the armature by a membrane spring on a further transmission component, relative to which the armature is braked or to which the armature is coupled. | 03-22-2012 |
20120138003 | Engine With Stub Shaft Supported Cam Gear And Machine Using Same - In one aspect, a machine includes an engine supported on a machine body. The engine includes a housing and a gear train that includes a crank gear meshed with a cam gear that is meshed with at least one powered gear. The cam gear is attached to a cam shaft by a drive coupler. The cam shaft is rotationally supported in the housing on a plurality of bearings, and the cam gear is rotationally supported on a stub shaft with an inner surface that is out of contact with the cam shaft. The stub shaft is attached to the housing of the engine. | 06-07-2012 |
20120192821 | MOTORCYCLE CAMSHAFT DRIVE TENSIONER - A cam drive tensioner for use with an engine includes a main body mounted to a component of the engine; a shoe movably mounted to the main body, for movement in a first direction; and two or more hydraulic chambers defined between the main body and the shoe, with the two or more hydraulic chambers being laterally spaced apart from each other in a second direction generally perpendicular to the first direction. | 08-02-2012 |
20120192822 | TOOTHED BELT COVERED BY A CLOTH AND DRIVE SYSTEM COMPRISING THE SAME - A toothed drive belt covered by a cloth comprising PPS fibres is disclosed. In particular, the belt comprises at least one of the weft and warp yarns comprising at least one yarn made of PPS fibres. Advantageously, the belt of the invention is used inside the engine block in applications continuously in contact with oil. | 08-02-2012 |
20130139773 | ENGINE DRIVE SYSTEM - A system for an engine drive that engages a timing band with a camshaft and a crankshaft is provided. The system further includes a coupling device that couples the camshaft to another camshaft that is not engaged with the timing band. The coupling device and the camshafts are in such a configuration that the camshafts rotate in opposing directions. | 06-06-2013 |
20130180487 | ENGINE DRIVE SYSTEM - A system for an engine drive that engages a timing band with a first camshaft, a driveshaft and a crankshaft is provided. The system further includes a gear drive including a first gear coupled to the driveshaft and a second gear coupled to a second camshaft. The second camshaft is positioned between the first camshaft and the driveshaft such that the shafts are horizontally coplanar. | 07-18-2013 |
20130312685 | TIMING CHAIN DRIVE DEVICE - The present invention provides a timing chain drive device which has high mechanical strength of the timing chain contact surface and small sliding resistance, and which, even when being brought into contact with a timing chain running at high speed, is difficult to wear. A first chain guide and a second chain guide, which give tension to a timing chain so as to prevent the timing chain from being slackened, are arranged, and a plurality of rollers, each of which is supported by a rolling element, are arrayed in each of the first chain guide and the second chain guide so as to be brought into contact with the timing chain. | 11-28-2013 |
20140000538 | MECHANICALLY CONTROLLABLE VALVE DRIVE AND MECHANICALLY CONTROLLABLE VALVE DRIVE ARRANGEMENT | 01-02-2014 |
20140090616 | CYLINDER AIR VOLUME DIFFERENCE ADJUSTER AND CONTINUOUS VARIABLE VALVE LIFTER INCLUDING THE SAME - A continuous variable valve lifter having a cylinder air volume difference adjuster includes a camshaft having an input cam, an eccentric control shaft disposed parallel to the camshaft, and a control link rotatable around the eccentric control shaft. An output cam is provided to open and close a valve actuator for opening/closing, and a connection link is rotatably connected to the control link, and driving the output cam by the rotation of the input cam. A cam cap is disposed where the camshaft and the eccentric control shaft are mounted. | 04-03-2014 |
20140102393 | VALVE DRIVE ARRANGEMENT FOR ACTUATING GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A valve drive arrangement for actuating gas exchange valves of an internal combustion engine having a camshaft, on which first and second cam carriers are arranged on first and second contact regions in a non-positive and/or positively locking manner, the first cam carrier having at least one cam for actuating a gas exchange valve and the second cam carrier having at least one cam for actuating an ancillary unit, the first contact region being configured with regard to the geometric dimensions differently in relation to the second contact region in such a way that the second cam carrier can be mounted, without being impeded by the contact regions for the first cam carrier. | 04-17-2014 |
20140174389 | VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE, AN INTERNAL COMBUSTION ENGINE, AND A METHOD FOR PRODUCING A CORRESPONDING VALVE TRAIN - A valve train of an internal combustion engine includes at least one basic camshaft with a cam carrier provided thereupon in a rotationally fixed and axially displaceable manner. The cam carrier has at least one valve-actuating cam as well as a tubular basic element that receives the basic camshaft in at least some sections. At least one cam element of the cam carrier, in particular the valve-actuating cam, is arranged on the basic element. At least one torque-transmitting connecting element is located between the basic element and the cam element. An internal combustion engine having at least one valve train and a method for producing a valve train are also disclosed. | 06-26-2014 |
20140338620 | MARKING LABELS FOR DRIVE CHAINS - A drive chain for an internal combustion engine, e.g. a timing chain, comprises a plurality of chain links, which each include at least one chain link plate and which are interconnected via a chain hinge. At least one chain link plate is provided with a mark configured as a label and affixed to the chain link plate by means of an adhesive layer. In addition, a method is provided for marking a drive chain for an internal combustion engine, comprising a plurality of chain links, which each include at least one chain link plate and which are interconnected via a chain hinge, wherein a label is affixed to at least one chain link plate. | 11-20-2014 |
20140345551 | INTERNAL COMBUSTION ENGINE AND MOTORCYCLE EQUIPPED WITH THE ENGINE - In an internal combustion engine, upper and lower crankcases include a crank chamber, a clutch chamber in communication with the crank chamber, and a cam chain chamber. The upper crankcase includes a second upper partition wall configured to separate the cam chain chamber and the clutch chamber from each other. The lower crankcase includes a first lower partition wall configured to separate the cam chain chamber and the crank chamber from each other, and a second lower partition wall configured to separate the cam chain chamber and the clutch chamber from each other. An oil passage allowing communication between the cam chain chamber and the crank chamber is provided in the first lower partition wall. First passages allowing communication between the cam chain chamber and the clutch chamber are provided respectively in the bottom surface of the second upper partition wall and in the top surface of the second lower partition wall. | 11-27-2014 |
20150020760 | Four-cycle Internal Combustion Engine - A four-cycle engine has an engine block having a cylindrical bore and an enclosed oil reservoir. Lubrication oil is inhaled from the oil reservoir and splashed to lubricate inner parts of the engine. The engine is provided with a cylinder head assembly having a pair of overhead intake and exhaust valves. Reciprocating intermediate lifters are provided between push rod and cam flowers to actuate the valve train. A push rod chamber communicated with the valve chamber is partitioned from the cam chamber and flowing of excess oil from the cam chamber into the valve chamber is prevented. Length of valve train push is shortened and it makes design of high speed engine properly. | 01-22-2015 |
20150075469 | OHV ENGINE - An OHV engine with a reduced height includes a cylinder, a piston inside the cylinder, a crank shaft that converts reciprocating movement of the piston into rotating movement, a connecting rod that connects the piston and the crank shaft to each other, and a cam shaft that moves in association with the crank shaft. When the cylinder is viewed from the crank shaft, the cylinder is inclined in an obliquely upward direction so that an angle defined by the cylinder center axis and a horizontal plane is greater than 0 degree and smaller than about 45 degrees. The cam shaft is at a lower position than the cylinder center axis. The cylinder center axis is offset with respect to a line which passes through a rotation axis of the crank shaft and is parallel or substantially parallel to the cylinder center axis, to a side spaced away from the cam shaft. | 03-19-2015 |
20160102736 | CHAIN TENSIONER FORCE MECHANISM FOR INTERNAL COMBUSTION ENGINE - A tensioner force assembly for applying tension to an engine timing chain that changes the direction of the force acting on a chain tensioning arm such that the tensioner piston is oriented in parallel with the long axis of the crankshaft is provided. The tensioner assembly includes a crankshaft sprocket attached to the crankshaft, a cam shaft sprocket attached to the cam shaft, and a timing chain engaging the sprockets. A timing chain tensioner is pivotally attached to the engine block. A chain tensioner mechanism is provided that takes up timing chain slack. The chain tensioner mechanism includes a pivotable force transfer mechanism, a cylinder body having a long axis parallel to the long axis of the crankshaft, and a reciprocating tensioner piston in the body and engaged with the transfer mechanism for moving the transfer mechanism to apply required tension to the timing chain through the timing chain tensioner. | 04-14-2016 |
20160130994 | FOUR-STROKE ENGINE - A four-stroke engine includes an oil tank, a crankshaft chamber, a distribution chamber, a rocker chamber, a combustion chamber, and a lubricating system. The oil tank is communicated with the crankshaft chamber through an oil supply channel. The four-stroke engine further comprises a cam and a transmission mechanism connected between the cam and a crankshaft of the crankshaft chamber in a matched manner. The cam is matched with a rocker of the rocker chamber and located above the combustion chamber. | 05-12-2016 |