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| Number | Title | Issue Date |
| 7921833 | Fuel injection control during start-up A method of operation of an internal combustion engine including an intake valve coupled to a combustion chamber, and a port fuel injector positioned upstream of the intake valve in an intake manifold including a throttle, the port fuel injector fluidly coupled to a... | 04/12/2011 |
| 7726289 | Control apparatus and control method for internal combustion engine In at least a first cycle at startup, an opening timing of an exhaust valve is controlled to 45 degrees before-bottom-dead-center of an exhaust stroke, or to a retard side of the normal closing timing that is set after warm-up is complete. Also, the closing timing o... | 06/01/2010 |
| 7712459 | Air-fuel ratio control system for internal combustion engine and control method of the same An air-fuel ratio control system includes an air-fuel ratio sensor (23, 24) disposed upstream or downstream of an exhaust purification catalyst, and performs feedback control of the fuel supply amount such that an output value of the air-fuel ratio sensor is ... | 05/11/2010 |
| 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 |
| 7401606 | Multi-stroke cylinder operation in an internal combustion engine A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the m... | 07/22/2008 |
| 7360513 | Internal combustion engine that uses a variable compression ratio device A variable compression ratio mechanism that changes the compression ratio according to the rotation angle of a control shaft, wherein a stopper is provided at the highest compression ratio side for regulating the rotation of the control shaft. Then, the output detec... | 04/22/2008 |
| 7347086 | System and method for burner-based accelerated aging of emissions control device, with engine cycle having cold start and warm up modes A method for accelerated aging of an automotive catalytic converter under conditions incorporating cold start simulations. ... | 03/25/2008 |
| 7318412 | Control device for internal combustion engine An engine ECU executes a program including the steps of: starting an engine by transiently increasing an amount of fuel injection when a start request is detected; prohibiting calculation of a learn value when a condition for stopping transient increase is not satis... | 01/15/2008 |
| 7273040 | Air-fuel ratio control apparatus for internal combustion engine At the time of start-up, fuel supply is made excessive. When air-fuel ratio feedback control is started while the fuel is excessive, the control is put into a state of overshoot or hunting, and it takes a long time to converge to the target air-fuel ratio. In an air... | 09/25/2007 |
| 7273035 | Control apparatus for internal combustion engine In an internal combustion engine where an in-cylinder injector and an intake manifold injector can both be used, initial setting of a fuel injection ratio (DI ratio) in accordance with a condition of the engine is basically carried out in response to power-up of an ... | 09/25/2007 |
| 7258112 | Reducing HC collection in a diesel particulate filter during failure in an engine cold start aid An engine (10) and a method of operating it during cold start and ensuing running using a cold start aid such as a glow plug control (24) and glow plugs (22). The control (24) monitors all glow plugs to distinguish between one that is eff... | 08/21/2007 |
| 7219650 | Control apparatus of fuel injection type internal combustion engine The invention improves a combustion at a starting time by refining a fuel at a time of starting the engine so as to minimize an amount of the fuel attached to a wall surface and appropriately form an air-fuel mixture. When the engine starts, a control apparatus exec... | 05/22/2007 |
| 7210455 | Engine control with fuel quality sensor A system is described using a fuel quality sensor for controlling various aspects of engine operation. In particular, an acoustic wave sensor is utilized to measure viscosity and density of gasoline fuels. This measurement is utilized to predict engine combustion qu... | 05/01/2007 |
| 7191755 | Idle air control valve stepper motor initialization technique A system for controlling idle air flow for an engine. The system includes an idle air control valve, a stepper motor, and a controller. The idle air control valve has a first hard stop and a second hard stop. The stepper motor is coupled to the idle air control valv... | 03/20/2007 |
| 7181379 | Variable altitude simulator system for testing engines and vehicles A method and system for controlling both the pressure and temperature at the engine air intake, engine crankcase, and at the engine exhaust so that pressure and temperature conditions are equilibrated. Engines are tested both at simulated high altitudes (operating a... | 02/20/2007 |
| 7168408 | Control device of internal combustion engine An upper level sensor or the like is used to detect an amount of lubricant in an oil pan of an engine. When the amount of lubricant exceeds a prescribed value (step ST1), that is, when lubrication of a sliding portion such as a bearing is insufficient due to ... | 01/30/2007 |
| 7146972 | Exhaust gas sensor activation judgment and air fuel ratio control system/method An air fuel ratio control system includes an exhaust gas sensor to sense an oxygen concentration in an exhaust passage of an internal combustion engine, and a controller. The controller is configured to judge that the exhaust gas sensor is in an active state, by mon... | 12/12/2006 |
| 7139225 | Virtual real-time clock based on time information from multiple communication systems Method and apparatus to implement a “virtual” real-time clock at a terminal based on time information from multiple communication systems. At least one system (e.g., GPS) provides “absolute” time information for the virtual real-time clock, and at least one ... | 11/21/2006 |
| 7080630 | Method for calculating cylinder charge during starting A system and method to control fuel delivery to an engine at startup includes a crank sensor that determines a rotational position of the engine. A control module calculates an air mass of a first cylinder based on the rotational position of the engine and delivers ... | 07/25/2006 |
| 7059313 | Software fuel volatility measurement A system is described using a fuel quality sensor or an estimate of fuel volatility for controlling various aspects of engine operation. For example, improved fuel tank leak detection may be achieved using an estimate of fuel volatility obtained from fuel purging op... | 06/13/2006 |
| 7047944 | Method and system to determine engine restart The present invention provides a method for computer controlled fuel injection into a vehicle engine under conditions where the vehicle is starting from cold or being restarted after a short period of being shut off. The method utilizes the value of conductance meas... | 05/23/2006 |
| 7036982 | Method and apparatus to control an exhaust gas sensor to a predetermined termperature The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating tempera... | 05/02/2006 |
| 6997172 | Fuel properties estimation for internal combustion engine A fuel properties estimating apparatus for an internal combustion engine includes a controller. The controller is configured to determine an estimated component concentration of a component, such as alcohol, in a fuel for the engine in accordance with an actual air ... | 02/14/2006 |
| 6986331 | Startup-time control apparatus and stop-time control apparatus of internal combustion engine, and control methods thereof, and record medium If it is determined that the present engine startup is a high-temperature startup, immediately fuel injection in concert with start of cranking is prohibited. After a delay time elapses following the start of cranking, or when THC | 01/17/2006 |
| 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 |
| 6976483 | Air-fuel ratio control apparatus for internal combustion engine and method thereof When an internal combustion engine is in a low load and low rotation operation, and also an elapsed time after the starting of engine operation is less than a predetermined period of time, a heater heating an air-fuel ratio sensor is turned OFF, to stop an air-fuel ... | 12/20/2005 |
| 6975933 | Fuel properties estimation for internal combustion engine Fuel properties estimating apparatus for an internal combustion engine includes a controller to determine an estimated component concentration of a component in a fuel. The controller calculates an air-fuel correction quantity in accordance with an actual air fuel r... | 12/13/2005 |
| 6966304 | Estimation of oil-diluting fuel quantity of engine Apparatus for an internal combustion engine includes an estimating or controlling unit to determine an oil-diluting fuel quantity of an engine oil-diluting fuel which is fuel leaking out through a clearance between a piston and a cylinder of the engine and diluting ... | 11/22/2005 |
| 6935101 | Heating control system for gas sensor of engine An electronic control unit of an internal combustion engine performs preheat energization control before activation energization control. In the activation energization control, a gas sensor is energized with electric power capable of heating the gas sensor to activ... | 08/30/2005 |
| 6921883 | Gas sensor and method of heating the same Temperature of a heater is controlled by switching an increasing rate of a resistance value of heating unit of the heater. During a period T1 from a time point when heating of the heater is started until the resistance value of the heating unit reaches a refe... | 07/26/2005 |
| 6915202 | Method and arrangement for controlling the drive unit of a vehicle A method and an arrangement for controlling a drive unit make a vehicle speed control possible wherein operating conditions not wanted by the driver are avoided. A desired quantity, which is to be outputted by the drive unit, is formed in dependence upon a pregiven ... | 07/05/2005 |
| 6850870 | Failure diagnosis device for O2 sensor A failure diagnosis device for an O2 sensor includes an O2 sensor; a heater driving unit driving a heater heating the O2 sensor; and a diagnosis unit controlling the heater driving unit heating the heater, and diagnosing O2 | 02/01/2005 |
| 6758202 | Control method for engine A control method adjusts fuel injection into an engine having a variable compression ratio. The method determines the cylinder air amount based on various sensors and the current compression ratio. The disclosed fuel injection method can perform both open loop and c... | 07/06/2004 |
| 6631708 | Control method for engine A control method adjusts fuel injection into an engine having a variable compression ratio. The method determines the cylinder air amount based on various sensors and the current compression ratio. The disclosed fuel injection method can perform both open... | 10/14/2003 |
| 6598589 | Engine control algorithm-cold start A/F modifier A method and apparatus for controlling the amount of fuel used in combustion during open-loop run mode of a internal combustion engine. A lookup table calibrated to a fuel with a low driveability index is used to make a fueling decision for open-loop run ... | 07/29/2003 |
| 6543431 | System for air-fuel ratio control A system and a method of controlling an engine during and after a temporary fueling shut-off during idling, deceleration or a switch to auxiliary power generating device is presented. According to this method, maintaining power to the heater of an exhaust... | 04/08/2003 |
| 6481428 | Methods and systems for reducing internal combustion engine exhaust emissions In order to provide for reduced internal combustion engine exhaust emissions when cold starting an internal combustion engine, there is provided two methods and systems for cold starting an internal combustion engine, and one method and system for shuttin... | 11/19/2002 |
| 6482310 | Current control for a pumped air reference oxygen sensor A method for applying and controlling current applied to an air reference oxygen sensor included in a vehicle exhaust system is disclosed. In an exemplary embodiment of the invention, the method includes measuring an output voltage across the oxygen senso... | 11/19/2002 |
| 6467458 | Start control apparatus for an internal combustion engine and fuel nature determination apparatus A start control apparatus for an internal combustion engine which guarantees excellent startability regardless of the nature of the fuel used. In addition, a fuel nature determining apparatus designed to prevent mistakes in the determining of the nature o... | 10/22/2002 |
| 6349710 | Engine combustion controller An engine combustion controller for an engine having a fuel supply system selects an engine combustion mode from one of lean combustion, in which an air fuel mixture leaner than a stoichiometric mixture is burned, and stoichiometric combustion, in which a... | 02/26/2002 |
