Entries |
Document | Title | Date |
20080271704 | Method of Controlling Operation of an Engine that Can Use a Single-Fuel of a Multi-Fuel Combustion Mode - The present invention relates to a method of controlling operation of an internal-combustion engine using a single-fuel or a multi-fuel combustion mode with at least one fuel type comprising a high octane number and a low energy density and at least another fuel type comprising a low octane number and a high energy density, a method wherein the energy required for the engine to operate in multi-fuel mode is provided by a combination of two fuel types. | 11-06-2008 |
20090031988 | NON-EQUILIBRIUM PLASMA DISCHARGE TYPE IGNITION DEVICE - An ignition device performs spark ignition to a fuel mixture in a combustion chamber ( | 02-05-2009 |
20090064970 | METHOD FOR TAKING INTO ACCOUNT THE OUTGASSING OF FUEL FROM THE ENGINE OIL OF AN INTERNAL COMBUSTION ENGINE - The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant and a fuel supply by means of direct injection, wherein an air number (lambda) of a fuel-air mixture supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for the internal combustion engine to be transferred to an operating state with higher fuel consumption, when a low air number (lambda) is detected in driving conditions with a high percentage of fuel ingress from a crankcase ventilation system into the fuel-air mixture. By means of this increase in the fuel requirement, the fuel, which exited the engine oil into the intake air of the internal combustion engine, can be combusted; and an increase in the exhaust gas emissions by means of incompletely combusted fuel, in which typically hydrocarbons and carbon dioxide arise, can be avoided. In a warm-up phase of the internal combustion engine, the fuel, which ingressed into the engine oil, can thus likewise be combusted, even if under certain temperature-time conditions, particularly in the partial load operating mode and during idling, more fuel is present in the fuel-air mixture than is actually required for operating the internal combustion engine. | 03-12-2009 |
20090114188 | Ignition Energy Control for Mixed Fuel Engine - As one example, an engine system for a vehicle is provided, including an internal combustion engine having at least one cylinder; a fuel system configured to provide a fuel to the cylinder; an ignition system including at least a spark plug; a control system configured to vary a level of ignition energy provided to the cylinder via the spark plug in response to a composition of the fuel provided to the cylinder by the fuel system. A method of operating the engine system by varying a level of ignition energy provided to the engine after a start-up is also provided. | 05-07-2009 |
20090126685 | Ignition control apparatus and method for controlling ignition of a four-cylinder engine - An engine ignition control apparatus for controlling ignition of a multi-cylinder, 4-cycle engine includes dual ignition coils for controlling ignition timing of the respective cylinders during engine operation. The engine ignition control apparatus includes a stroke determination unit for determining a stroke based on crank pulses and on an output signal of an intake pressure sensor. The engine ignition control apparatus also includes an ignition map allocation unit for allocating ignition maps to the respective cylinders of two ignition systems, each having a pair of cylinders with a same phase, before the stroke determination. The ignition map allocation unit also allocates ignition maps independently to each of the respective cylinders after the stroke determination. The engine ignition control apparatus also includes an ignition timing calculation unit for calculating ignition timing of the respective ignition coils based on the ignition maps allocated to the respective cylinders. | 05-21-2009 |
20090151695 | Method and apparatus for controlling ingition timing of an internal combustion engine based on engine rotary speed - An engine ignition control apparatus includes a standard ignition map for use in retarding ignition timing when a throttle opening is within a predetermined range, and when an engine speed is within a predetermined region; and an acceleration-time advance angle correction quantity map for performing advance angle correction when the engine speed is within the predetermined region; an engine accelerometer for detecting a rate of change of the engine rotary speed; and an acceleration-time advance angle correction quantity setting unit for correcting an advance angle of the ignition timing. When the engine speed is within the predetermined range, and the rate of change of engine rotary speed is greater than or equal a predetermined rate, the acceleration-time advance angle correction quantity setting unit performs attenuation processing for deriving an advance angle correction quantity; and increases an attenuation quantity of the advance angle quantity for every ignition. | 06-18-2009 |
20090199817 | CONTROL APPARATUS AND METHOD FOR INTERNAL COMBUSTION ENGINE - A fixed ignition mode in which ignition timing is fixed to a predetermined timing is selected when an engine speed is low. When in the fixed ignition mode, it is determined whether the engine is in a high temperature state or in a non-high temperature state and whether during or after a start-up of the engine. Then, the ignition timing is fixed to a first crank angle, when the engine is in the non-high temperature state, and fixed to a second crank angle retarded from the first crank angle when the engine is in the high temperature state and during the start-up. The ignition timing is fixed to a third crank angle advanced from the second crank angle when, the engine is in the high temperature state and that the start-up has been completed. | 08-13-2009 |
20090205612 | METHOD FOR CONTROLLING A SPARK-IGNITION DIRECT-INJECTION INTERNAL COMBUSTION ENGINE AT LOW LOADS - A spark-ignition direct-injection internal combustion engine is controlled at low loads through split fuel injections and spark discharges including one injection and spark during a negative valve overlap period and another injection and spark during a compression phase of the engine cycle. | 08-20-2009 |
20090266335 | CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE - A control device of an internal combustion engine calculates ignition delays in lean combustion and rich combustion, standardizes the ignition delays based on ignition timing, and further standardizes the ignition delays based on injection quantity and injection timing of pilot injection respectively. The control device calculates a present ignition delay by linear interpolation of the standardized ignition delays in the lean combustion and the rich combustion. Moreover, the control device corrects the present ignition delay with the ignition timing and further corrects the present ignition delay with the injection quantity and the injection timing of the pilot injection. The control device calculates a command value of the injection timing by subtracting the corrected present ignition delay from target ignition timing. | 10-29-2009 |
20100031922 | Ignition control system for internal combustion engine - An object to be achieved by the present invention is to achieve ignition timing that is suitable for an environment in which a spark ignition internal combustion engine is used during the period of starting of the internal combustion engine and warm-up thereof just after starting. To achieve this object, according to the present invention, in an ignition control system for an internal combustion engine in which, ignition timing is controlled by feedback in such a way that the engine rotation speed becomes equal to a target rotation speed when the temperature of the internal combustion engine is lower than a prescribed temperature, and retard control for retarding the ignition timing by a predetermined amount from target ignition timing is performed when the temperature of the internal combustion engine is equal to or higher than the prescribed temperature, the aforementioned prescribed temperature is changed according to the altitude of the place where the internal combustion engine is used. | 02-11-2010 |
20100037857 | INTERNAL COMBUSTION ENGINE CONTROL FOR IMPROVED FUEL EFFICIENCY - A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. Feedback control is used to dynamically determine the working cycles to be skipped to provide a desired engine output. In some embodiments a substantially optimized amount of air and fuel is delivered to the working chambers during active working cycles so that the fired working chambers can operate at efficiencies close to their optimal efficiency. In some embodiments, the appropriate firing pattern is determined at least in part using predictive adaptive control. By way of example, sigma delta controllers work well for this purpose. In some implementations, the feedback includes feedback indicative of at least one of actual and requested working cycle firings. In some embodiments, the appropriate firings are determined on a firing opportunity by firing opportunity basis. Additionally, in some embodiments, an indicia of the current rotational speed of the engine is used as a clock input for a controller used to selectively cause the skipped working cycles to be skipped. | 02-18-2010 |
20100059019 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device for an internal combustion engine in which controls can be simplified, and being capable of performing high-performance control by appropriately mediating a plurality of requirements. The device includes an emission control unit, a fuel consumption control unit and an idle stability control unit. Those units output requirements for the internal combustion engine on the basis of their respective aims. An efficiency mediation unit that mediates requirements from those units is provided. Furthermore, an actuator instruction value calculation unit, which determines instruction values for the plurality of actuators installed in the internal combustion engine on the basis of a result of mediation performed by the efficiency mediation unit, is also provided. The requirement is a requirement concerning torque efficiency, which indicates a ratio of a required torque to a reference torque that is obtained when operating points of the plurality of actuators are optimized. | 03-11-2010 |
20100071658 | INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE CONTROL METHOD - In a V-type six-cylinder engine, turbo-superchargers are provided for compressing intake air and feeding the compressed air into combustion chambers, and an ECU is operable to switch the combustion mode from a non-supercharged stoichiometric combustion mode to a supercharged lean combustion mode, depending on the engine operating conditions. When switching from the non-supercharged stoichiometric combustion mode to the supercharged lean combustion mode, the ECU retards the ignition timing, and keeps the retard amount of the ignition timing at a constant value if the increasing actual boost pressure becomes equal to or higher than a pre-set target boost pressure. | 03-25-2010 |
20100101533 | Method and system for igniting a lean fuel mixture in a main chamber of an internal combustion engine - A method and system for igniting a lean fuel mixture in a main chamber of an internal combustion engine by igniting a rich air-fuel mixture in a pre-combustion chamber which is fuelled using a controlled valve. For a stable and consistent ignition of the main chamber and simultaneous reduction of emission of the internal combustion engines a closed loop control adjusts the fuel amount and the fuelling time for the pre-combustion chamber in order to achieve a light off in an optimal time window and by sufficient ignition energy. | 04-29-2010 |
20100132666 | PLASMA JET IGNITION PLUG IGNITION CONTROL - A control system for controlling the ignition of a plasma-jet spark plug provided in an internal combustion engine senses an operating condition of the internal combustion engine, and determines an ignition mode of the plasma-jet spark plug in accordance with the sensed operating condition. The control system performs an ignition control of breaking down the insulation across a spark discharge gap by applying a first electric power to the plasma-jet spark plug, and producing plasma in the vicinity of the spark discharge gap by applying a second electric power to the spark discharge gap in a state of dielectric breakdown. The control system performs this ignition control according to the ignition mode determined as mentioned above. | 06-03-2010 |
20100212631 | COMBUSTION ENGINE AND METHOD OF CONTROLLING A COMBUSTION ENGINE - An internal combustion engine including: a pulse current generator; at least one electrode including at least one tip; a mechanism controlling the electrical supply to the electrode by the generator; and a combustion chamber in which the tip of the electrode is positioned, the tip being separated from the inner wall of the chamber by a minimum separation distance. The current generator and the electrode are configured such that the power density generated while the electrode is being supplied is less than 10 | 08-26-2010 |
20100236520 | Control unit and control method for torque-demand-type internal combustion engine - An ECU executes a program including: detecting the engine speed NE and the current KL (S | 09-23-2010 |
20100251995 | OPTIMIZED GENERATION OF A RADIOFREQUENCY IGNITION SPARK - A method for controlling a radio-frequency plasma generator including a supply circuit with a switch controlled by at least one control pulse train, for applying an intermediate voltage at a control frequency on an output to which is connected a resonator for generating a spark between two electrodes when a high voltage level is applied to the output. The method receives first and second measurement signals respectively representative of the operation of a combustion engine and of the type of spark generated; and real-time adjusts, based on the received measurement signals, at least one parameter selected from at least the intermediate voltage level, the control frequency, and the duration of the control train, to promote branching of the spark generated. | 10-07-2010 |
20110023825 | IGNITION CONTROL DEVICE FOR USE WITH LIGHT DUTY GASOLINE ENGINE AND METHOD OF SUPPRESSING REVERSE ROTATION OF THE ENGINE - The invention provides an ignition control device for suppressing reverse rotation of the engine during startup process of light duty gasoline engine and a method of suppressing reverse rotation of the engine during startup process of light duty gasoline engine, the ignition control device comprises: a charge coil, a transformer, an electric-spark-generating control circuit, a trigger coil, a position sensing circuit, and a micro-controller. The position sensing circuit is used to shape the positive signal and negative signal of the second alternating current signal induced by the trigger coil while the fly wheel rotates respectively to generate a first position signal and a second position signal and provide the first position signal and the second position signal to the micro-controller. And according to the first position signal and the second position signal, it is determined by the micro-controller whether the engine is in the state of reverse rotation, and if YES, output of ignition signal is stopped to make engine halt due to absence of reverse power so as to avoid further damage to other parts of the engine. Besides, the ignition signal may be provided, according to rotation speed of the engine, by the ignition control device at the exact ignition moment to control the spark plug to generate an electric spark. | 02-03-2011 |
20110073070 | METHOD FOR CONTROLLING SPARK FOR PARTICULATE FILTER REGENERATING - A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine spark is controlled such that soot held by a particulate filter may be oxidized even during low engine loads. | 03-31-2011 |
20110126802 | Method and Apparatus for Providing Electronic Ignition of Early Automobile Engines - An electronic ignition module for vintage automobiles that utilizes existing components and wiring to retain the look and operation of the original system but with superior performance. The ignition module replaces the original roller and contacts of a vintage automobile ignition timer with modern control electronics that actuate the original coils and original spark plugs using the original wiring in the original manor. Electronic ignition operation is user programmable to emulate the original roller/timer performance or provide automatic spark advance similar to modern automobile operation for optimum power and efficiency while freeing the operator from manual adjustment of spark timing. Ignition module programming is accomplished without any external switches, buttons, jumpers or modification to the vintage automobile by simply sensing the presence or absence of ignition coils connected to the system when power is applied. The electronic ignition module resides fully contained within the confines of the original timer housing without any modifications what so ever, rendering it completely undetectable by visual inspection. | 06-02-2011 |
20110132323 | METHOD FOR IMPROVING TRANSIENT ENGINE OPERATION - A method for operating an engine with a fuel reformer is presented. In one embodiment a method for operating an engine by injecting a gaseous fuel and a liquid fuel to at least an engine cylinder is presented. The mixture of an engine cylinder may be diluted with EGR and a fraction of gaseous fuel may be increased relative to a fraction of liquid fuel injected to a cylinder in response to an operator tip-out. | 06-09-2011 |
20110155100 | Traction Control System and Method of Suppressing Driving Power - A traction control system comprises a detector configured to detect a monitored spin value corresponding to a spin amount of a drive wheel in a vehicle; a condition determiner configured to determine whether or not the monitored spin value detected by the detector meets a driving power suppressing condition; and a controller configured to execute a traction control for reducing a driving power of the drive wheel based on the determination; the condition determiner being configured to set the driving power suppressing condition variably based on at least one of a variable parameter relating to a rotation number difference which is variable according to a change rate of a rotation number difference between the drive wheel and a driven wheel, and a variable parameter relating to rotation of a drive system which is variable according to a rotation change rate of the drive system for driving the drive wheel. | 06-30-2011 |
20120017873 | SPARK ADVANCE ADJUSTMENT - The invention relates to an additional process for the spark advance adjustment. This process is used for the tight adjustment of the spark advance angle depending on the structure of the fuel molecules from at least one mapping. This adjustment covers the entire operation range of the engine. This process reduces the pollutant emission when the engine is cold, as soon as the engine starting and stabilisation phase when the engine control and adjustment systems are not in a closed adjustment loop yet. The spark advance adjustment can also be used for operation at the rattle boundary during high load operation and at the engine full load. | 01-26-2012 |
20120204832 | SYSTEMS AND METHODS FOR DECREASING TORQUE FLUCTUATIONS DURING CYLINDER DEACTIVATION AND REACTIVATION - A control system for an engine includes a first spark control module and a second spark control module. The first spark control module retards spark timing for M of N cylinders of the engine to a first spark timing during a period before deactivating or after reactivating the M cylinders, wherein M is an integer greater than or equal to one, and wherein N is an integer greater than M. The second spark control module advances spark timing for (N−M) active cylinders of the engine to a second desired spark timing during the period before deactivating or after reactivating the M cylinders, wherein the second spark timing is greater than the first spark timing. | 08-16-2012 |
20120210978 | FUEL SYSTEM ABNORMALITY DETECTION APPARATUS - An electronic control apparatus that performs feedback control on a fuel injection command value to make an air-fuel ratio come to match a target air-fuel ratio increase-corrects an intake air amount and retard-corrects an ignition timing, together with decrease-correcting the fuel injection command value in the feedback control, and then performs an abnormality detection of a fuel system based on a retard-correction amount of the ignition timing at that time. | 08-23-2012 |
20130284148 | IGNITION COIL WITH IONIZATION AND DIGITAL FEEDBACK FOR AN INTERNAL COMBUSTION ENGINE - Systems and methods for controlling an internal combustion engine include an ignition coil that generates a pre-discharge ionization signal during charging of the ignition coil after reaching a first threshold charge level and prior to spark discharge and a controller that determines an engine operating condition, such as pre-ignition or plug fouling, in response to the pre-discharge ionization signal. The ignition coil may also generate digital feedback and ionization signals used to by the controller to control ignition coil dwell and repetitive sparking, as well as providing various combustion diagnostics. | 10-31-2013 |
20140102413 | IGNITION TIMING CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE - The present invention is provided with: an injection timing detection unit; an engine rotation speed detection unit; an engine load detection unit; and a storing unit for storing control data of the variation in optimal ignition timing with respect to engine speed and engine load, and control data of correction coefficient pertaining to optimal ignition timing with respect to the engine load at a specific fuel injection timing. Referring to the control data, the variation in the optimal ignition timing is determined based on the detected fuel injection timing and the detected engine rotation speed; and, referring to the control data, the variation in the optimal ignition timing is determined based on the specific fuel injection timing and the detected engine speed, and the deviation between the respective variation in the optimal injection timing is determined. | 04-17-2014 |
20140109871 | ENGINE CONTROL SYSTEM AND METHOD - Methods and systems are provided for purging condensate from a charge air cooler to an engine intake while reducing misfire events related to the water ingestion. During the purging, a spark timing is adjusted based on the amount of condensate purged per cycle. The spark timing is adjusted differently when the condensate is purged during a tip-in versus a pro-active clean-out routine. | 04-24-2014 |
20140165964 | Method for operating an internal combustion engine of a hand-guided power tool - In a power tool, an internal combustion engine is coupled by a clutch to a tool member. An ignition control device is provided that for each engine speed of the internal combustion engine specifies at least one ignition timing. For each engine speed of a first engine speed range a correlated first ignition timing is specified, wherein each first ignition timing is an ignition timing of a first ignition timing range. For each engine speed of a second engine speed range, adjoining the first engine speed range, a correlated second ignition timing is specified, wherein each second ignition timing is an ignition timing of a second ignition timing range. The first ignition timing is retarded by at least 5° crank angle relative to the second ignition timing. The first engine speed range extends at least from the coupling engine speed range to the limit engine speed of approximately 7,000 RPM. | 06-19-2014 |
20140182548 | SYSTEM AND METHOD FOR ANALYZING CARBON BUILD UP IN AN ENGINE - An induction cleaning analyzing system includes a pressure sensor, an ignition event detector, and a control module. The pressure sensor measures airflow pressures of intake air and/or exhaust from cylinders in a common airflow pathway of a vehicle. The ignition event detector determines ignition events of the cylinders. The control module obtains pressure waveforms representative of the airflow pressures and divides the pressure waveforms into waveform segments. The control module associates different subsets of the waveform segments with different ones of the cylinders using the ignition events. The control module also identifies cyclic variations in the airflow pressures flowing in the common airflow pathway and caused by at least one of the cylinders by examining the waveform segments associated with the at least one of the cylinders. | 07-03-2014 |
20140283786 | SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE - A base in-cylinder volume is corrected by a learned value to calculate a corrected in-cylinder volume. A difference of a crank angle which gives the corrected in-cylinder volume and the base crank angle is calculated as a “crank angle correction value”, and a base ignition timing is corrected by the crank angle correction value and feedback correction value. An in-cylinder volume at a crank angle where a combustion ratio became a set ratio at the previous combustion is calculated as a “previous in-cylinder volume VFp”, a difference ΔVFp of the previous in-cylinder volume VFp with respect to the base in-cylinder volume VBp at the previous combustion is calculated, and the learned value ΔVL is updated based on the in-cylinder volume difference VFp. | 09-25-2014 |
20140352661 | METHOD FOR PURGING CONDENSATE FROM A CHARGE AIR COOLER - Methods and systems are provided for cleaning out condensate stored at a charge air cooler. In response to increased condensate accumulation at a charge air cooler, airflow through the engine is increased to purge the condensate while an engine actuator is adjusted to maintain engine torque. Combustion stability issues of engine cylinders are addressed by adjusting fueling of each cylinder individually during condensate ingestion. | 12-04-2014 |
20150053178 | COMBUSTION MODIFICATION AND EMISSIONS REDUCTION UTILIZING AN ELECTRICALLY INSULATED ENGINE MEMBER IN INTERNAL COMBUSTION ENGINES - A system and method is provided for applying an electric field in internal combustion engines to act on the combustion process to reduce emissions and improve fuel economy in an engine. The engine has an engine block forming a combustion chamber. An in-cylinder engine part is exposed within a combustion chamber of the engine and a voltage is applied between the in-cylinder engine part and the engine block. | 02-26-2015 |
20150316019 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE (AS AMENDED) - A control apparatus for an internal combustion engine according to the present invention includes a spark plug ( | 11-05-2015 |
20160017858 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE AND IGNITION CONTROL DEVICE FOR SUCH A METHOD - Described is a method for controlling an internal combustion engine, wherein an ignition control device is prompted by control signals of an engine control device to activate an ignition device by means of which an ignition of a fuel-air mixture in a cylinder of the internal combustion engine is affected. It is provided according to this disclosure, that the engine control device communicates a target ignition angle or information about an operating condition of the internal combustion engine to the ignition control device, and the ignition control device sets an operating parameter of the ignition device in dependence on the target ignition angle or the information about the operating condition of the internal combustion engine. | 01-21-2016 |
20160025060 | PREDICTIVE CORRECTION IN INTERNAL COMBUSTION ENGINES - A method and system for reducing cycle to cycle variation of an engine is provided. The system may determine fuel injection characteristics and predict a gas burning rate or flame speed based on the fuel injection characteristics. The system may adjust an ignition timing in response to the predicted gas burning rate within the same engine cycle. | 01-28-2016 |
20160047352 | IGNITION SYSTEM - It is possible to adjust electromagnetic energy introduced from a low-voltage side of a primary winding | 02-18-2016 |
20180023530 | IGNITION TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE | 01-25-2018 |