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| Number | Title | Issue Date |
| 8033267 | Control apparatus for an engine A control apparatus for an engine including a unit for retarding an ignition timing from an MBT by a predetermined value or more during cranking at engine starting or during a period from a first combustion up to an idling engine speed. ... | 10/11/2011 |
| 7726281 | Cylinder pressure sensor diagnostic system and method A control module comprising a cylinder torque determination module that determines an indicated torque for a cylinder in an engine based on a pressure in the cylinder, a cylinder torque balancing module that determines a derivative term for the cylinder based on rot... | 06/01/2010 |
| 7669583 | Internal combustion engine control apparatus An internal combustion engine control apparatus includes an in-cylinder pressure sensor for detecting in-cylinder pressure. A combustion start time and combustion end time, which are parameters serving as control indexes for an internal combustion engine, are determ... | 03/02/2010 |
| 7334567 | Method for operating an internal combustion engine An internal combustion engine includes a charge motion flap which influences the combustion in at least one combustion chamber of the internal combustion engine. The function of the charge motion flap is monitored. At least one actual value of a variable characteriz... | 02/26/2008 |
| 7267103 | Ignition timing control system for internal combustion engine An ignition timing control system for internal combustion engines, which is capable of preventing occurrence of variation in engine speed and vibrations which can be caused due to variation in combustion state between the cylinders, to thereby improve drivability. T... | 09/11/2007 |
| 7260469 | Method for operating an internal combustion engine In a method for operating an internal combustion engine, a first data quantity is derived based on a signal of a first sensor which detects the pressure in a first combustion chamber of a plurality of combustion chambers, and a second data quantity is derived based ... | 08/21/2007 |
| 7255090 | Compression ignition engine with pressure-based combustion control An internal combustion engine having a plurality of combustion cylinders configured to operate in a compression ignition mode. A pressure sensor is provided to sense pressure within a combustion cylinder of the engine. A combustion control system, including an elect... | 08/14/2007 |
| 7237532 | Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines A multicylinder homogeneous charge compression ignition (HCCI) engine with a control system designed to maintain stable HCCI combustion during engine speed/load transitions by: (1) determining “combustion parameter” values such as the maximum rate of pressure ri... | 07/03/2007 |
| 7225793 | Engine timing control with intake air pressure sensor An engine control apparatus is disclosed for determining crankshaft position and engine phase of an internal combustion engine through monitoring intake air pressure fluctuations. The opening of the intake valve is mechanically linked to the crankshaft position of a... | 06/05/2007 |
| 7213573 | System and method of controlling engine dilution rate using combustion stability measurer derived from the ionization signal This feature of the present invention comprises a system and method of controlling exhaust gas recirculation (EGR) based on a measure combustion stability measure. The combustion stability measure is obtained by determining the integration duration of the engine ion... | 05/08/2007 |
| 7178507 | Engine cylinder-to-cylinder variation control A control system and method for balancing output and exhaust emission values of the various cylinders of an engine having individual cylinder fuel delivery control. Selected output and emission related values for one cylinder, selected as a base cylinder, are compar... | 02/20/2007 |
| 7124020 | System for calibrating apparatus for acquiring the pressure in a motor vehicle diesel engine cylinder The invention relates to a system for calibrating apparatus (28) for acquiring the pressure in a cylinder (10) of a motor vehicle diesel engine, of the type comprising a cylinder pressure sensor (30) associated with the cylinder and means (32... | 10/17/2006 |
| 7073485 | Engine management An engine management system for an internal combustion engine, which has at least one cylinder pressure sensor and at least one engine actuator, includes a data processor arranged to receive and process cylinder pressure data from the cylinder pressure sensor and th... | 07/11/2006 |
| 7025043 | Method for balancing the torque generated by the cylinders of an internal combustion engine, in particular a direct-injection diesel engine provided with a common rail injection system A method for balancing the torque generated by the cylinders of an internal combustion engine comprising the stages of: determining for each cylinder quantity which indicates the torque generated by the cylinder in a given engine cycle; determining for each cylinder... | 04/11/2006 |
| 7025042 | Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines A multicylinder homogeneous charge compression ignition (HCCI) engine with a control system designed to maintain stable HCCI combustion during engine speed/load transitions by: (1) determining “combustion parameter” values such as the maximum rate of pressure ri... | 04/11/2006 |
| 7021287 | Closed-loop individual cylinder A/F ratio balancing The individual cylinder air to fuel ratio of an internal combustion engine varies due to the fact that the intake manifold cannot distribute airflow into the individual cylinders evenly. This feature of the present invention utilizes minimum timing for best torque M... | 04/04/2006 |
| 6964257 | Method and device for controlling an internal combustion engine A method and device for controlling an internal combustion engine. A first variable is predefined on the basis of a signal of a combustion chamber pressure sensor or a structure-borne noise sensor. This first variable characterizes the combustion process in the comb... | 11/15/2005 |
| 6935313 | System and method for diagnosing and calibrating internal combustion engines A method, system, and machine-readable storage medium for determining a predetermined operating condition of an internal combustion engine are disclosed. In operation, the method, system and machine-readable storage medium measure a cylinder pressure in at least one... | 08/30/2005 |
| 6898509 | Method of controlling an internal combustion engine A method of controlling an internal combustion engine is provided, in which at least two operating states are differentiated, at least one operating variable of the engine being controlled, a setpoint torque being predetermined on the basis of the optimum operating ... | 05/24/2005 |
| 6871135 | Method for operating an internal combustion engine, the internal combustion engine and a control apparatus therefor The invention is directed to a method for operating an internal combustion engine (1) wherein a fault of a pressure system with a pressure sensor (14) is determined by a first diagnostic system (14′) of the engine (1). The pressure sens... | 03/22/2005 |
| 6866024 | Engine control using torque estimation Torque estimation techniques in the real-time basis for engine control and diagnostics applications using the measurement of crankshaft speed variation are disclosed. Two different torque estimation approaches are disclosed—“Stochastic Analysis” and “Frequen... | 03/15/2005 |
| 6851411 | Knocking index value calculation device and calculation method thereof A controller (31) of a knocking index value calculation device in a spark ignition engine (1) determines operating conditions of the engine (1), estimates an in-cylinder pressure at a reference crank angle, which is set at a predetermined crank ... | 02/08/2005 |
| 6848421 | Engine control method and apparatus using ion sense combustion monitoring A method and control system that directly determines combustion quality by measuring an ionization signal of each combustion event during initial engine operation is shown. The determined combustion quality is used to optimize engine performance for emissions and dr... | 02/01/2005 |
| 6840218 | Method for detecting and regulating the start of combustion in an internal combustion engine The invention relates to a method for detecting the start of combustion in the combustion chamber of an engine with autoignition. In the method, the profile of the cylinder pressure is measured and the signal which is obtained in this way is transformed using wavele... | 01/11/2005 |
| 6805099 | Wavelet-based artificial neural net combustion sensing A method and apparatus for real-time measurement of combustion characteristics of each combustion event in each individual cylinder coupled with an ability to control the engine based upon the combustion characteristics are shown. The invention includes using select... | 10/19/2004 |
| 6619255 | Combustion event indicative parameter dependent control for auto-ignited combustion A system and method for controlling an internal combustion engine employs a split injection to create stratified air/fuel mixture charge. The stratified charge includes an ignitable air/fuel mixture portion around a spark plug within the surrounding lean ... | 09/16/2003 |
| 6516780 | System and method for optimizing engine performance An engine control system and method include determining which engine cylinder is performing at a level differently than a majority of the other cylinders. Whenever a cylinder output is below that of the other cylinders, an engine performance variable, suc... | 02/11/2003 |
| 6425371 | Controller for internal combustion engine A controller for an internal combustion engine is disclosed that improves drivability by always stabilizing combustion. A combustion state is detected based on an engine speed fluctuation every cylinder, and whether combustion is stable is determined. Whe... | 07/30/2002 |
| 6247448 | Closed loop spark control method and system utilizing a combustion event sensor to determine borderline knock A method and system to determine the borderline spark timing for a given speed and load of a given cylinder and control spark timing relative to that borderline spark timing to maintain the torque/efficiency of the engine. The system measures combustion r... | 06/19/2001 |
| 6178949 | Engine control having fuel volatility compensation An improved engine control in which the fuel volatility is detected based on a measure of the fired-to-motored cylinder pressure ratio, and used to trim fuel and spark timing controls during engine warm-up and transient fueling periods. In a first embodim... | 01/30/2001 |
| 5740780 | Control system for improved cylinder torque balance of engine Cylinder to cylinder variation in developed cylinder torque is suppressed by correcting ignition timings for the individual cylinders or by correcting fuel injection amounts allocated to the individual cylinders. Amounts of correction to be made to the in... | 04/21/1998 |
| 5692474 | Engine combustion control apparatus An engine combustion control apparatus includes a pressure sensor provided at each of the cylinders in an engine, for detecting the pressure in each cylinder, and a controller for calculating the state variables of the intake amount and combustion tempera... | 12/02/1997 |
| 5682856 | Apparatus for controlling an internal combustion engine and method thereof A rate of change in the combustion pressure in each of the cylinders is calculated based upon a result detected by a combustion pressure sensor provided for each of the cylinders. The air-to-fuel ratio is increased and/or the ignition timing is retarded f... | 11/04/1997 |
| 5276625 | System for detecting and adjusting for variation in cylinder pressure in internal combustion engine A cylinder pressure detecting system includes a plurality of pressure sensors, each of which is provided for monitoring pressure in one of plurality of cylinders. The system performs data sampling of detection values produced by one of the pressure sensor... | 01/04/1994 |
| 5107813 | Control apparatus of an internal combustion engine A control apparatus of an internal combustion engine which comprises: a pressure detecting means for detecting an inner cylinder pressure of each cylinder of a plurality of cylinders of the internal combustion engine; a crank angle detecting means for det... | 04/28/1992 |
| 5069183 | Multi-cylinder engine control method and electronic control apparatus therefor In a multi-cylinder engine control method and a control apparatus therefor, rotating speeds of the multi-cylinder engine at explosion strokes of the respective cylinders are detected for estimating combustion pressures in the respective cylinders, and dev... | 12/03/1991 |
| 4936276 | Learning system for ignition control A control system and method for optimizing power in a combustion cylinder of an engine. An ignition timing reference is offset during each learning interval. Differences in indicated mean effective pressure (IMEP) which result from the timing offset are c... | 06/26/1990 |
| 4892074 | Spark ignition timing control system for internal combustion engine A spark ignition timing control system includes pressure sensors monitoring internal pressure in respectively associated combustion chambers. The outputs of the pressure sensors are processed for detecting crank shaft angular position at which the interna... | 01/09/1990 |
| 4802454 | Device for controlling ignition timing in internal combustion engine A device for controlling ignition timing in an internal combustion engine comprises a pressure sensor disposed in the vicinity of each combustion chamber and is able to determine both the maximum cylinder pressure angle and the presence/absence of knockin... | 02/07/1989 |
| 4718382 | Device for controlling ignition timing in internal combustion engine A device for controlling ignition timing in an internal combustion engine comprises a compression sensor disposed in the vicinity of the combustion chamber of each cylinder. Acceleration and other transient conditions of the engine driving conditions are ... | 01/12/1988 |
