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| Number | Title | Issue Date |
| 7481207 | Fuel control system for an engine A method of controlling an amount of fuel to an engine is disclosed. The method includes determining first and second fuel limits. The first fuel limit is indicative of a higher value than the second fuel limit. The method also includes determining an amount of fuel... | 01/27/2009 |
| 7360526 | Method for operating an internal combustion engine In a method for operating an internal combustion engine with an electrically openable and closable fuel injector (18), the injectors are reliably held open in all operating conditions by the fact that the holding current for an open valve (18) is switc... | 04/22/2008 |
| 7334559 | Evaporative fuel supply apparatus A canister is furnished to store evaporative fuel. A purge line is furnished to ensure that the canister communicates with an internal combustion engine intake path. The purge line is provided with a D-VSV (purge control valve) that controls the continuity of the pu... | 02/26/2008 |
| 7322344 | Fuel injection control apparatus for internal combustion engine An internal combustion engine includes a direct injector for injecting fuel directly into a combustion chamber of the engine, an intake passage injector for injecting fuel into an intake passage of the engine, and a vaporized fuel processing unit for purging purge g... | 01/29/2008 |
| 7293556 | Method of controlling the injection begin of a fuel injection valve of an internal combustion engine In a method of controlling an internal combustion engine wherein an injection begin is calculated depending at least on an actual engine speed and the injection begin is corrected, the injection begin correction is calculated from a deviation of a desired air mass f... | 11/13/2007 |
| 7274987 | Fuel and method for evaluating fuel saving operation When detecting and recording vehicle data items corresponding to evaluation parameters for fuel-efficient driving (the parameters may include, for example, the speed of the vehicle, the average engine speed during an upshift, or an idle time), it is determined which... | 09/25/2007 |
| 7239957 | Method and system for seamless transition between multiple feedback ranges A method and system are provided for processing multiple sensor output signals of different ranges/sensitivities so as to provide a seamless transition when switching between the different ranges. More specifically, a determination is made as to whether a selected s... | 07/03/2007 |
| 7234455 | Robust maximum engine torque estimation A system for a vehicle comprising of an engine including a first cylinder group and a second cylinder group; a linear exhaust gas sensor coupled exclusively to the first cylinder group; a switching exhaust gas sensor coupled exclusively to the second cylinder group;... | 06/26/2007 |
| 7222016 | System and method for transfer of feedback control for a process control device Disclosed herein is a controller and method useful for transferring control of a process control device between first and second control modes. The controller includes first and second servo control modules that generate first and second drive signals based on feedb... | 05/22/2007 |
| 7216638 | Control of exhaust gas stoichiometry with inducted secondary air flow A method for operating a marine engine uses four valves to control the flow of secondary air that is inducted into each of the cylinders of an engine. An oxygen sensor is disposed in an exhaust passage downstream from the cylinders and upstream from a catalytic conv... | 05/15/2007 |
| 7185637 | Fuel injection control method and fuel injection control apparatus for engine In a fuel injection control method of an engine, an electronic control unit calculates a pressure integrated value for one combustion cycle by detecting a combustion cycle and continuously detecting a suction air pipe pressure and determines that the engine is under... | 03/06/2007 |
| 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 |
| 7133759 | Electronic control apparatus for a vehicle Electronic control apparatus for a vehicle, in particular a heavy goods vehicle, which apparatus includes an electronic control unit (ECU) adapted to control actuation of vehicle brakes. The ECU has a non volatile storage memory for storing braking related control p... | 11/07/2006 |
| 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 |
| 7069139 | Control device for internal combustion engine A control device for an internal combustion engine comprises an air flow meter arranged in the intake passage. The air flow meter includes a main passage and a bypass passage and detects a flow rate of air flowing through the bypass passage to detect a flow rate of ... | 06/27/2006 |
| 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 |
| 7023682 | Solenoid control using voltage control of freewheel current decay In a vehicle fuel-injection system, additional voltage is applied to an otherwise current-controlled valve solenoid so as to increase the time window over which freewheeling current in the solenoid decreases from a pull-in level to a hold level. The time during whic... | 04/04/2006 |
| 6969341 | Engine deceleration control system An engine deceleration control system for an internal combustion engine of a vehicle is arranged to prohibit correcting an air quantity supplied to the engine when an elapsed time period from a moment of turning off of an accelerator of the engine is within a first ... | 11/29/2005 |
| 6880541 | Air-fuel ratio control apparatus for internal combustion engine Air-fuel ratio control apparatus for an engine of automobile for controlling an air-fuel ratio to a desired value includes module (33) for computing a purge ratio (Pr) from a purge quantity (QPRG) and an engine operation state, module (35) for computin... | 04/19/2005 |
| 6827070 | Method and device for controlling an engine A method and a device for controlling an engine, in which a control module calculates a setpoint torque based on an accelerator position and calculates an air mass and a fuel mass from this setpoint torque. In the process, a setpoint value for lambda (ratio of air m... | 12/07/2004 |
| 6799565 | Method and system for controlling fuel for an engine The present invention relates to a method and system for preventing a lean Air/Fuel ratio that may occur when accelerating an engine. An engine is supplied with a base amount of fuel that is adjusted, or compensated, according to one or more compensation variables t... | 10/05/2004 |
| 6672284 | Fuel supply amount control apparatus for internal combustion engine When control conditions are satisfied, an A/F value is estimated from an average value of rotation speed Ne and an increasing rotation speed ƊNe calculated. The estimated A/F value as a base is obtained from the average value of the rotation speed Ne, an... | 01/06/2004 |
| 6609510 | Device and method for controlling air-fuel ratio of internal combustion engine An intake air quantity detected by an air flow meter is corrected based on a change speed of an engine load and on a change speed of an engine rotation speed, and an oxygen quantity stored in a catalytic converter is estimated based on the corrected intak... | 08/26/2003 |
| 6415763 | Device and method for controlling fuel injection amount of internal combustion engine In an internal combustion engine mounted on a vehicle, the constitution is such that the fuel injection quantity is switched to correspond to the operating state of said engine while being gradually increased when an auxiliary brake is switched from a non... | 07/09/2002 |
| 6401454 | Engine control device An engine control device provided with a lean NOx catalyst comprises means for estimating a condition of the lean NOx catalyst, means for performing reactivation control of the lean NOx catalyst based on the result, and means for controlling the terminati... | 06/11/2002 |
| 6390082 | Method and apparatus for controlling the current level of a fuel injector signal during sudden acceleration An apparatus and method for controlling fuel injection signals to an engine during a sudden acceleration event. The present apparatus and method includes an electronic controller coupled to the electronically controlled fuel injectors of the engine and op... | 05/21/2002 |
| 6212880 | Engine control device An engine control device provided with a lean NOx catalyst comprises means for estimating a condition of the lean NOx catalyst, means for performing reactivation control of the lean NOx catalyst based on the result, and means for controlling the terminati... | 04/10/2001 |
| 6029642 | Method for forming a fuel-metering signal for an internal combustion engine The invention is directed to a method for computing a fuel-metering signal for adjusting a pregiven lambda value for the composition of the air/fuel mixture of an internal combustion engine. In the method, a first signal is formed which represents the air... | 02/29/2000 |
| 6016794 | Fuel injection control apparatus for internal combustion engine A fuel injection control apparatus for an internal combustion engine includes an injector control apparatus 120B for controlling a fuel injection amount toward a target fuel injection amount Fm. The injector control apparatus 120B includes an expected eng... | 01/25/2000 |
| 5983874 | Air-fuel ratio control system for internal combustion engines An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor arranged in the exhaust system of the engine. An ECU estimates the air-fuel ratio of a mixture supplied to each of the cylinders cylinder by cylinder in r... | 11/16/1999 |
| 5941212 | Air-fuel ratio control system for internal combustion engines An air-fuel ratio control system for an internal combustion engine includes an ECU which cuts off fuel supply to the engine at deceleration thereof, measures a fuel cut-off period over which the fuel cut-off means cuts off fuel supply to the engine, and e... | 08/24/1999 |
| 5915368 | Air/fuel ratio control apparatus that uses a neural network An air/fuel ratio control apparatus for executing auxiliary control of an air/fuel ratio by compensating an injected fuel amount set by a control system for maintaining the air/fuel ratio at a preset value. The air/fuel ratio control apparatus includes a ... | 06/29/1999 |
| 5778866 | Air-fuel ratio detecting system of internal combustion engine In an internal combustion engine equipped with electronically controlled fuel injection valves, there is provided an air-fuel ratio detecting system. The system comprises a wide range type air-fuel ratio sensor disposed in an exhaust pipe of the engine. T... | 07/14/1998 |
| 5767386 | Exhaust gas sensor and circuit configuration for the exhaust gas sensor An exhaust gas sensor has first and second sensor elements. Exhaust gas surroundings of the first sensor element are catalytically activated, so that an oxygen partial pressure which is in equilibrium will always be measured by the first sensor element, r... | 06/16/1998 |
| 5727536 | Engine control system and method A feedback control system and method for operating an internal combustion engine to provide the desired air/fuel ratio under all running conditions. The feedback control operates to modify the fuel/air ratio from that achieved by a basic setting that is d... | 03/17/1998 |
| 5713340 | System for fueling an internal combustion engine with low and high pressure gaseous fuel A hybrid gaseous fueling system having a low pressure supply and a high pressure supply is disclosed. This system provides the advantages of fueling with a low pressure charge during steady state operation and also provides a way to more rapidly smooth en... | 02/03/1998 |
| 5682868 | Engine controller with adaptive transient air/fuel control using a switching type oxygen sensor An Electronic Engine Controller (EEC) which controls operation of an engine employs a switching type oxygen sensor to determine the composition of exhaust gas produced by the engine. The EEC enhances the signal received from the oxygen sensor to generate ... | 11/04/1997 |
| 5649518 | Fuel metering control system for internal combustion engine A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A feedback correction coefficien... | 07/22/1997 |
| 5553593 | Control system and method for metering the fuel in an internal combustion engine A control system is described for metering the fuel in an internal combustion engine. On the basis of the operating state of the internal combustion engine and a mixture correction signal for correcting the deviation of the air/fuel ratio from a desired v... | 09/10/1996 |
| 5546919 | Operating arrangement for gaseous fueled engine A feedback control system for a gaseous fuel supplied internal combustion engine wherein the air-fuel ratio is maintained at a stoichiometric ratio by mixing air with the gaseous fuel supply to the charge former. A manually controlled air bleed is incorpo... | 08/20/1996 |
