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| Number | Title | Issue Date |
| 8015967 | Air-fuel ratio control apparatus An air-fuel ratio control apparatus is applied to an internal combustion engine including a variable lift mechanism which changes a lift amount of an intake valve. An oxygen sensor, which outputs a signal indicating an oxygen concentration in exhaust gas, is provide... | 09/13/2011 |
| 7921832 | Control system for plant A control system for a plant can include a feedback control input which can be calculated so that a controlled output of said plant coincides with a target value. A hold control input can be calculated according to an operating condition of said plant. A control inp... | 04/12/2011 |
| 7845343 | Fuel injection control device and engine control system A fuel injection control device for performing injection control of an injector has a program for performing fuel injection of a predetermined injection quantity (a small quantity) with an injector based on establishment of a first permission condition during fuel c... | 12/07/2010 |
| 7654252 | Air-fuel ratio control system and method for internal combustion engine An air-fuel ratio control system includes: a catalyst; an A/F sensor provided upstream of the catalyst; an oxygen concentration sensor provided downstream of the catalyst; an output value estimation portion that estimates the output value of the oxygen concentration... | 02/02/2010 |
| 7614391 | Oxygen sensor output correction apparatus for internal combustion engine A correction apparatus for correcting an output of an oxygen sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of oxygen contained in exhaust gas. The apparatus works to execute a fuel cut operation to bring the pressu... | 11/10/2009 |
| 7568476 | Air-fuel ratio control system for internal combustion engine When detecting the data showing an output characteristics of an air-fuel ratio sensor, the air-fuel ratio (feed air-fuel ratio) supplied to each cylinder is alternately changed to rich or lean by a predetermined ratio (X %). And then, the average value of the detect... | 08/04/2009 |
| 7438066 | Method and device for controlling an internal combustion engine A method and device for controlling an internal combustion engine, in which the fuel quantity to be injected into the engine is limited to a limiting value. The limiting value is predefined on the basis of the output signal of a closed-loop controller or an open-loo... | 10/21/2008 |
| 7426926 | Cold idle adaptive air-fuel ratio control utilizing lost fuel approximation A method for controlling fueling of an engine, the method comprising during an engine cold start and before the engine is warmed to a predetermined level, transitioning from open-loop fueling to closed-loop fueling, where during closed-loop fueling feedback from an ... | 09/23/2008 |
| 7404397 | Method and apparatus for modifying fuel injection scheme A fuel injector control modification module is configured to modify primary fuel injector control signals provided by an engine control unit of an internal combustion engine. The module is particularly adapted to modifying fuel injector control signals based upon de... | 07/29/2008 |
| 7401604 | Engine control device and control method thereof An engine control device and method that prevents fuel injection quantity from becoming unstable due to a rapid change of a correction quantity even in a predetermined operation state such as acceleration time and thus stabilizes an air-fuel ratio. Under a predeterm... | 07/22/2008 |
| RE40431 | Method of regulating an internal combustion engine Method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, wherein the internal combustion engine is supplied at least some of the time with a first fuel and at least some of the... | 07/15/2008 |
| 7386388 | Air-fuel ratio control system and method for internal combustion engine, and engine control unit An air-fuel ratio control system for an internal combustion engine, which is capable of accurately estimating an exhaust gas state parameter according to the properties of fuel, thereby making it possible to properly control the air-fuel ratio of a mixture. The air-... | 06/10/2008 |
| 7370642 | Fuel vapor treatment apparatus A CPU measures an actual air-fuel ratio based on the signals detected by the air-fuel ratio sensor. When the difference between the actual air-fuel ratio and a target air-fuel ratio is larger than a predetermined value, the computer determines that a fuel vapor amou... | 05/13/2008 |
| 7363912 | Fuel injection controller for engine A fuel injection controller calculates a difference between a rotation speed fluctuation amount of an engine in the case where an injection for learning is performed and the rotation speed fluctuation amount in the case where the injection for the learning is not pe... | 04/29/2008 |
| 7356985 | Air-fuel ratio controller for internal combustion engine A target air-fuel ratio setting part has a sub-feedback part, a target air-fuel ratio enriching part, and a target air-fuel ratio changeover part. The sub-feedback part variably sets a target air-fuel ratio upstream of a catalyst on the basis of a detection signal o... | 04/15/2008 |
| 7356989 | System for providing assistance in regenerating depollution means The invention provides a system for providing assistance in regenerating depollution means included in an exhaust system of a motor vehicle engine, the system comprising means for controlling the operation of the engine in order to switch the engine between operatio... | 04/15/2008 |
| 7359792 | Method and apparatus for initializing injectors In an apparatus for initializing injectors based on pieces of correction data each corresponding to one of the injectors, an obtaining unit obtains injection characteristics of the injectors using temporally-input pieces of data as the pieces of correction data. The... | 04/15/2008 |
| 7353814 | Apparatus and method for controlling fuel injection of internal combustion engine, and internal combustion engine An internal combustion engine has a fuel injection valve. To cause an actual air-fuel ratio of air-fuel mixture burned in the engine to be equal to a target value, an electronic control device corrects a fuel injection amount from the fuel injection valve using a fe... | 04/08/2008 |
| 7349790 | Method for operating a flex fuel conversion system A method for operating a flex fuel conversion system for efficiently providing an aftermarket fuel delivery system which allows a vehicle to be operated on gasoline, ethanol or any combination of gasoline and ethanol. The a method for operating a flex fuel conversio... | 03/25/2008 |
| 7343240 | Fuel injection controller In a case that actual values of a fuel injection quantity and fuel pressure are not in consistent with a representative point, an interpolation process is conducted by used of a learn value of a plurality of representative points. During the interpolation process, a... | 03/11/2008 |
| 7337768 | Multiple capillary fuel injector for an internal combustion engine A fuel injector for delivering fuel to an internal combustion engine. The fuel injector includes a fuel injector housing, a system for metering vaporized fuel to the internal combustion engine, the system positioned within the fuel injector housing, and a system for... | 03/04/2008 |
| 7337059 | Method and device for operating an internal combustion engine A method and a device for controlling an internal combustion engine. In a first operating mode, a fuel quantity is predefined according to a first rule for calculating the quantity based on at least the torque variable. In a second operating mode, the fuel quantity ... | 02/26/2008 |
| 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 |
| 7337060 | Method, computer program and control unit for operating an internal combustion engine A method for triggering an internal combustion engine of a certain type according to a state machine is provided, in which a possible operating state of the engine, which is assigned to a layer n of the state machine, is first set. In an additional layer (n+1), sub-... | 02/26/2008 |
| 7324889 | Intake-air quantity control system of engine In an intake-air quantity control system of an engine employing a variable valve operating device capable of controlling a cylinder intake-air quantity by variable control of an operating characteristic of an intake valve, in a normal intake-valve operating mode a t... | 01/29/2008 |
| 7322346 | Method and device for engine control in a motor vehicle A method is specified for controlling a combustion engine in a motor vehicle, namely for optimally adjusting an air/fuel ratio which is distinguished in that the air/fuel ratio is the result of a regulation process. Individual aspects of the invention further addres... | 01/29/2008 |
| 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 |
| 7320309 | Method and device for controlling an internal combustion engine A method and device for controlling an internal combustion engine are provided. A first quantity characterizing the actually injected fuel amount and a second quantity characterizing the desired amount of fuel to be injected are determined on the basis of performanc... | 01/22/2008 |
| 7319930 | Method for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine In a method for equalizing the differences in injection quantities between the cylinders of a combustion engine, an adaptation of the differences in injection quantities, of the injection curves and of the hydraulic start of injection is carried out for different op... | 01/15/2008 |
| 7313474 | Simple engine fuel controller An electronic engine fuel controller that is simple, cheap, easily installed, and configurable for any internal combustion engine. The system is intended for upgrading older carbureted vehicles or vehicles that have been modified beyond the limits of the OEM control... | 12/25/2007 |
| 7311094 | Method for operating an internal combustion engine Operation of an internal combustion engine with oil lubrication and electronic fuel injection, includes the steps of determining a flow of fuel mass (mkp_ausg) evaporating out of oil, and determining a setpoint injected-fuel quantity (rk_ev) with taking into account... | 12/25/2007 |
| 7308354 | Method of controlling elements used to execute elementary functions of an internal combustion engine A method of controlling elements used to execute the elementary functions of internal combustion engines. The method controls the elements using measurement signals provided by sensors, determines theoretical signals that have to be provided by reference sensors at ... | 12/11/2007 |
| 7302941 | Air-fuel ratio control apparatus for internal combustion engine An air-fuel ratio control apparatus for an internal combustion engine according to the invention includes a control unit that makes a correction to the fuel injection amount using the air-fuel ratio learned value when calculating the fuel injection amount, and that ... | 12/04/2007 |
| 7302938 | Mechanical returnless fuel system A mechanical returnless fuel system comprises a fuel pump having an output for supplying fuel to fuel injectors of an automotive engine. The fuel system includes a pressure regulating valve that returns a portion of the pump output in excess of engine fuel usage to ... | 12/04/2007 |
| 7284522 | Automatic choke A choke valve is controlled finely suited to the running state of an engine. A throttle valve 8 and a choke valve 9 are provided in series on an intake pipe 6, and the opening degree of the choke valve 9 is controlled by a stepping motor ... | 10/23/2007 |
| 7284545 | Device for controlling an internal combustion engine The invention relates to a device for controlling an internal combustion engine, comprising a first regulator, whose regulating difference is the difference of an actual value and an estimated value of individual cylinder deviation of the air/fuel ratio from a prese... | 10/23/2007 |
| 7281533 | Air-fuel ratio feedback control apparatus and method for internal combustion engine A feedback control of an air-fuel ratio of an internal combustion engine is performed in such a manner that when fuel injection is resumed from a condition where fuel injection is stopped due to deceleration running, air-fuel ratio feedback control is resumed once t... | 10/16/2007 |
| 7277764 | Adaptive output feedback apparatuses and methods capable of controlling a non-minimum phase system The invention comprises apparatuses and methods for providing the capability to stabilize and control a non-minimum phase, nonlinear plant with unmodeled dynamics and/or parametric uncertainty through the use of adaptive output feedback. A disclosed apparatus can co... | 10/02/2007 |
| 7275374 | Coordinated multivariable control of fuel and air in engines Methods and systems for controlling a diesel engine using a combined fuel and air-side controller are disclosed. An illustrative method may include the steps of providing a combined fuel and air-side controller adapted to coordinate both the fuel and air-side contro... | 10/02/2007 |
| 7270119 | Air/fuel ratio control device for internal combustion engine An air-fuel ratio control apparatus for an internal combustion engine, implementing integral correction of the air-fuel ratio by an integral term edfii obtained by multiplying an integrated difference between a target air fuel ratio and the actual air-fuel ratio by ... | 09/18/2007 |
