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| Number | Title | Issue Date |
| 7694668 | System for controlling the operation of a diesel engine of a motor vehicle The invention relates to a system for controlling the operation of a diesel engine of a motor vehicle, associated with means for supplying the cylinders with fuel and with means for recirculating waste gases at the admission. The control system comprises means for c... | 04/13/2010 |
| 7392789 | Method for synchronizing cylinders in terms of quantities of fuel injected in an internal combustion engine In an adaptation (4, 5, 6, 7) of differences in injected quantities within high operating ranges, the differences are based on an injection parameter and are determined by regulating an irregular operation in an operating point within the lower operating rang... | 07/01/2008 |
| 7367330 | Internal combustion engine controller The internal combustion engine controller includes an oxygen concentration sensor outputting an electric signal having a value depending on an oxygen concentration in an exhaust gas flowing through an exhaust passage of an internal combustion engine, and a control u... | 05/06/2008 |
| 7296562 | Control system and method for estimating turbocharger performance A control system for estimating the performance of a compressor is disclosed. The control system has a compressor fluidly connected to an inlet manifold of a power source. The control system also has a power source speed sensor to provide an indication of a rotation... | 11/20/2007 |
| 7260462 | Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle A method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle. With known methods, electromagnetic valves are triggered with a pulse-width-modulated signal having a constant clock frequency. The object is to provid... | 08/21/2007 |
| 7240671 | Device for correcting fuel injection amount of internal combustion engine, and control apparatus for internal combustion engine employing the device To prevent RPM decrease, misfire, and engine stall by refraining from correcting, the amount of fuel to shift an air-fuel ratio toward a lean side to the extent of exceeding a combustion limit when the internal combustion engine operates at a low load, a control app... | 07/10/2007 |
| 7234450 | Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the ... | 06/26/2007 |
| 7234446 | Misfire detector for multi-cylinder engine A misfire detector prevents catalysts from being heated to damaging high temperatures. The misfire detector for a multi-cylinder engine includes a fuel cut control to stop supplying fuel to misfiring cylinders, a control to prevent a fuel feed back control and a fue... | 06/26/2007 |
| 7181331 | Engine air-fuel ratio control system An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon det... | 02/20/2007 |
| 7159385 | Apparatus for and method of detecting deterioration of catalyst in internal combustion engine An apparatus for detecting deterioration of a catalyst in an internal combustion engine initially biases an air/fuel ratio of an air-fuel mixture supplied to the internal combustion engine to a rich amount so that an amount of oxygen stored in the catalyst is substa... | 01/09/2007 |
| 7159388 | Air-fuel ratio control device for internal-combustion engine A catalyst is positioned in an exhaust path of an internal-combustion engine. A main air-fuel ratio sensor and sub-oxygen sensor are respectively positioned upstream and downstream of the catalyst. A main feedback operation is performed so that the output of the mai... | 01/09/2007 |
| 7154326 | Dither amplitude correction for constant current drivers In satisfying the above need, as well as overcoming the enumerated drawbacks and other limitations of the related art, the present invention provides an improved switched driver circuit. As disclosed above, there is a need to compensate for the high impedance load c... | 12/26/2006 |
| 7134428 | Method for damping pressure oscillations in a measuring signal of a lambda probe In order to average the continuously sampled individual values of the measuring signal through totaling over a summation period (TP1, TP2), said period corresponding to the period, dependent on engine speed, of pressure pulsations of the exhaust, while... | 11/14/2006 |
| 7128065 | Method and device for controlling an internal combustion engine A method and a device are described for controlling an internal combustion engine. On the basis of the comparison of a setpoint value with an actual value for a variable that characterizes the supplied oxygen quantity, an actuating variable is predefined for control... | 10/31/2006 |
| 7127344 | Engine air-fuel ratio control system An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon det... | 10/24/2006 |
| 7097162 | Carburetor with fuel vapor control A carburetor includes a body having a fuel and air mixing passage formed therein and an opening in fluid communication with the fuel and air mixing passage, a fuel metering assembly carried by the body and including a fuel metering diaphragm that defines at least pa... | 08/29/2006 |
| 7082935 | Apparatus and methods for closed loop fuel control A method of controlling fuel input to an engine of a vehicle. A feedback signal is received from a sensor that senses engine exhaust. A dither signal having the same frequency as the feedback signal is applied to a fuel control signal controlling fuel to the engine.... | 08/01/2006 |
| 7047938 | Diesel engine control system with optimized fuel delivery A system (400) and method of determining fuel demands of a locomotive engine (10) based upon engine speed and power produced by the engine at a given time, so to optimize the engine's power output for a load while reducing engine emissions. The engine ... | 05/23/2006 |
| 7047123 | Engine air-fuel ratio control system An engine air-fuel ratio control system uses a rich air-fuel ratio immediately after starting an engine to converge rapidly the air-fuel ratio toward a stoichiometric value. Upon determining an air-fuel ratio sensor is active, a stabilization fuel quantity increasin... | 05/16/2006 |
| 7007684 | Controller for internal combustion engine A controller for an engine including a fuel vapor processing mechanism. The controller determines the amount of fuel vapor drawn into an intake passage based on the concentration of fuel vapor purged into the purge passage. The controller corrects the fuel injection... | 03/07/2006 |
| 7004125 | Valve train system of internal combustion engine and control method thereof A valve train system for operating an intake valve of an internal combustion engine, in which an operation amount of the intake valve is controlled. When it is determined that there is a need of improving a fuel efficiency by increasing the compression ratio within ... | 02/28/2006 |
| 7000590 | Engine output control system A engine control system and a method of controlling a torque output of an internal combustion engine is disclosed. The engine control system comprises a torque receiving device operably connected to the engine, a sensor to sense an engine parameter, and an electroni... | 02/21/2006 |
| 6978759 | Start-up control of in-cylinder fuel injection spark ignition internal combustion engine An in-cylinder fuel injection internal combustion engine (1) is started up by means of compression stroke fuel injection from the beginning of cranking of the engine (1) to the end of a stratified combustion start-up period TST. If the engine (1... | 12/27/2005 |
| 6962140 | Diesel engine control system and control method A diesel engine control system and control method capable of conducting accurate fuel injection unaffected by variations in injector performance caused by differences among individual injectors or change with aging. The diesel engine control system includes an injec... | 11/08/2005 |
| 6944780 | Adaptive voltage scaling clock generator for use in a digital processing component and method of operating the same There is disclosed clock control circuitry for selectively applying a clock signal to a digital processing component wherein the clock signal is capable of being changed to a plurality of operating frequencies. The clock control circuitry is operable to (i) receive ... | 09/13/2005 |
| 6837231 | Cylinder bank work output balancing based on exhaust gas A/F ratio A system for balancing first and second work outputs between first and second cylinder banks of an engine includes a first intake camshaft associated the first cylinder bank and a first fuel injector associated with the first cylinder bank. A controller trims a puls... | 01/04/2005 |
| 6729319 | Apparatus and method for controlling internal combustion engine Gas containing fuel vapor is purged as purge gas from a canister to an intake passage through a purge line. An ECU computes purge flow rate, which is the flow rate of the purge gas, and computes vapor concentration, which is the concentration of the fuel vapor conta... | 05/04/2004 |
| 6681752 | Fuel injection system method and apparatus using oxygen sensor signal conditioning to modify air/fuel ratio A method and apparatus for externally modifying the operation of a closed loop electronic fuel injection control system that is normally used with a standard oxygen sensor, which method and apparatus includes replacing the standard oxygen sensor with a wi... | 01/27/2004 |
| 6668813 | Air-fuel ratio control device for internal combustion engine An air-fuel ratio control device for an internal combustion engine is provided with: an air-fuel ratio sensor; an O2 sensor; a device for setting a reference air-fuel ratio target value; a device for setting a target value of an output value of... | 12/30/2003 |
| 6662760 | Method and apparatus for controlling combustion timing in an homogenous-charge compression-ignition engine Timing of the combustion event in an homogenous-charge compression-ignition engine is controlled by adjusting the reactivity of the fuel, or of the fuel/air mixture inducted into the combustion chamber of the engine, thereby providing a means of controlli... | 12/16/2003 |
| 6629521 | Oxygen sensor and feedback system for outboard motor engine An outboard motor includes a sensor assembly having a housing with a sensor chamber, a sensor having a sensor element exposed to the sensor chamber, and a sleeve disposed in a passage extending from a combustion chamber of the outboard motor to the sensor... | 10/07/2003 |
| 6612297 | Method of controlling an engine startup A method providing solution of both of the problem of black smoke during the engine startup period and the problem of undershooting and hunting at the settling time. By adding at least an integral term QI to a basic injection quantity, feedback control of... | 09/02/2003 |
| 6588409 | Engine cold start fuel control method having low volatility fuel detection and compensation An improved engine fuel control detects combustion instability due to the use of high driveability index (DI) fuel during cold start and warm-up and compensates the fuel control for detected combustion instability through temporary enrichment of the deliv... | 07/08/2003 |
| 6575152 | Method for controlling the titre of the exhaust gases in an internal combustion engine A method for controlling the titre of the exhaust gases in an internal combustion engine. An oxygen sensor provides a signal indicative of a titre (lambda) of the exhaust gases. The method includes selecting respective values of operating parameters on th... | 06/10/2003 |
| 6513496 | Fuel injection controller of engine A fuel injection control device of an engine having a plurality of cylinders, that prevents sudden change in combustion condition. The control device calculates a basic amount of fuel to be injected into cylinders. The controller then decides an amount of... | 02/04/2003 |
| 6508230 | Revolution number control system for engine A revolution number control system includes ignition timing delay controlling means for delaying ignition timing from the ignition advance amount n at first prescribed value n2 when the engine revolution number NE is between the first prescribed value n2 ... | 01/21/2003 |
| 6491033 | Oxygen sensor and feedback system for outboard motor engine An outboard motor engine includes a feedback control system for controlling the air/fuel ratio of the air/fuel mixture combusted within the engine. The control system can be configured to vary the target output value of a combustion condition sensor in ac... | 12/10/2002 |
| 6474293 | Method for operating an internal combustion engine An internal combustion engine (1), especially for a motor vehicle, is described. The engine is provided with an injection valve (8) with which fuel can be injected directly into a combustion chamber (4) in a first operating mode during a compression phase... | 11/05/2002 |
| 6450158 | Air-fuel ratio feedback control apparatus of internal combustion engine and method thereof In a sliding mode control for restraining an air-fuel ratio state on a switching line set on a phase plane shown by a deviation between an actual air-fuel ratio and a target air fuel ratio, and a differential value of the deviation, an inclination of the ... | 09/17/2002 |
| 6325046 | Engine control system An internal combustion engine includes an improved feedback control system and method for operating the engine to provide the desired air/fuel ratio under all running conditions without causing unsettling variations in engine speed and torque as adjustmen... | 12/04/2001 |
