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| Number | Title | Issue Date |
| 7438049 | System for determining the start of combustion in an internal combustion engine The start of the combustion (CRK) of a mixture in a combustion chamber of an internal combustion engine is determined in accordance with a pressure (pc) that is measured in the combustion chamber. ... | 10/21/2008 |
| 7299680 | Knocking detection An in-cylinder pressure sensor for outputting a signal corresponding to an internal cylinder pressure of an engine is provided. A first signal and a second signal are extracted from the output signal of the in-cylinder pressure sensor. The first signal has a frequen... | 11/27/2007 |
| 7296556 | Control system for internal combustion engine A control system for an internal combustion engine having a fuel injector located in a combustion chamber of the engine for injecting fuel into the combustion chamber. The fuel injection timing stored in a fuel injection timing map is retrieved according to the dete... | 11/20/2007 |
| 7290442 | Method and system of estimating MBT timing using in-cylinder ionization signal A robust multi-criteria minimum timing for the best torque (MBT) timing estimation method and apparatus utilizes different ionization signal waveforms that are generated under different engine operating conditions. The MBT timing criteria is calculated based upon bo... | 11/06/2007 |
| 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 |
| 7182066 | Control apparatus for internal combustion engine and method of calculating intake air quantity for same An internal combustion engine (1) generates power by burning a mixture of fuel and air in each combustion chamber (3). The internal combustion engine (1) is provided with an in-cylinder pressure sensor (15) disposed in the combustion cham... | 02/27/2007 |
| 7140232 | Method and apparatus for multiple gas sensor A method and apparatus includes filter for removing a non-tracer gas from detection system and control unit for detecting the presence a low concentration tracer gas in the atmosphere. ... | 11/28/2006 |
| 6955157 | System for engine retard limit control The present invention provides a system and method for controlling the retard limit of an engine having one or more cylinders in which combustion occurs. A sensor is employed to detect the ionization of the combustion process in the cylinders. The ionization is rela... | 10/18/2005 |
| 6945230 | Method for eliminating detonation in an engine A method eliminates detonation in an internal combustion engine (10) by identifying conditions that identify the imminence thereof. The method centers about the pressure inside the cylinder (16) of the internal combustion engine (10). The method... | 09/20/2005 |
| 6820592 | Method and apparatus for controlling an internal combustion engine A method and an apparatus for controlling an internal combustion engine are described. At least one sensor serves to detect a first variable that characterizes the pressure in the combustion chamber of at least one cylinder. A second variable, which characterizes th... | 11/23/2004 |
| 6609497 | Method for determining MBT timing in an internal combustion engine Maximum braking torque timing in an internal combustion engine can be determined by calculating the net pressure change in an engine cylinder during combustion. The second derivative of the net pressure change is then calculated. The spark timing of the e... | 08/26/2003 |
| 6557528 | Method of controlling detonation in an internal combustion engine A method of controlling detonation in an internal combustion engine is provided with the steps of: combusting a fuel and air mixture within a combustion cylinder; sensing a plurality of pressures at discrete points in time within the combustion cylinder; ... | 05/06/2003 |
| 6308670 | System and method for valve timing A valve timing system and method 10 is provided which automatically compensates for variations in the compression ratios of cylinders 12 of an internal combustion engine 30. Valve timing system 10 includes a controller 24 and actuators 26, 28 which select... | 10/30/2001 |
| 5765530 | Method of controlling ignition timing of internal combustion engine and apparatus therefore The heat generating ratio for every crank angle is calculated as a combustion ratio for the total amount of heat generated by the engine, and the ignition timing is so corrected that the crank angle corresponding to from 10% to 90% of the combustion ratio... | 06/16/1998 |
| 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 |
| 5664544 | Apparatus and method for control of an internal combustion engine Within a predetermined time immediately after start up, ignition timing is retarded within a range wherein the output fluctuations do not exceed a predetermined permissible limit. Subsequently under conditions after elapse of the predetermined time but wh... | 09/09/1997 |
| 5584276 | Ignition timing controlling apparatus and method for internal combustion engine with exhaust gas purification catalytic converter During a predetermined period of time T upon a start of the engine, when low frequency components of a variation in either of an engine revolution speed or combustion pressure are extracted and the extracted low frequency component level is below a predet... | 12/17/1996 |
| 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 |
| 5245969 | Engine control device and control method thereof An object of the present invention is to provide an engine control device and an engine control method which can detect air quantities charged into the cylinders of the engine without delay, and the fuel injection quantity and ignition timing of the engin... | 09/21/1993 |
| 5156126 | Combustion control device for internal combustion engines A combustion control device for internal combustion engines, comprising cylinder pressure detecting means for detecting the combustion pressure in a cylinder, crank angle detecting means for detecting a crank angle of the engine to be controlled, cylinder... | 10/20/1992 |
| 5116356 | Control apparatus for an internal combustion engine The inner pressure of cylinder of an internal combustion engine and the crank angle are detected when the engine is in steady state. On the basis of the values as detected, at least one of a fuel quantity or an ignition timing is determined whereby an amo... | 05/26/1992 |
| 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 |
| 5101788 | Internal-combustion engine control device An internal-combustion engine control device includes a pressure sensing device for sensing a cylinder pressure of the internal-combustion engine, a crank angle sensing device for sensing a crank angle, an indicated mean effective pressure computing devic... | 04/07/1992 |
| 5027773 | Control device for an internal combustion engine A control device for an automotive engine provided with a fuel injection valve determines the current value of a parameter (e.g. the mean effective combustion pressure) indicative of the output power of the engine, and compares it to the target value ther... | 07/02/1991 |
| 4976241 | Method for determining combustion condition in spark ignition internal combustion engine and combustion condition control device A method and device for determining and controlling the condition of a spark ignition internal combustion engine involves detecting a physical value of combustion varying in association with combustion in the combustion chamber, then calculating the heat ... | 12/11/1990 |
| 4962738 | Ignition control system for an internal combustion engine An ignition control system for an internal combustion engine adapted to control ignition timing based on the internal pressure in an engine cylinder. In one embodiment, ignition timing is determined based mainly on the rotational position (i.e., crank ang... | 10/16/1990 |
| 4905648 | Ignition timing control appartaus for an internal combustion engine An ignition timing control apparatus for an internal combustion engine includes a pressure detector for detecting an inner pressure of cylinder of the engine, a crank angle detector for detecting a crank angle of the engine, and a control device which rec... | 03/06/1990 |
| 4556030 | Control arrangement for internal combustion engine The present invention features a control system for controlling the combustion process occurring in the combustion chamber of an internal combustion engine, wherein the exact nature of the combustion pressure generation wave form occurring during a compre... | 12/03/1985 |
| 4466408 | Apparatus for closed-loop combustion control in internal combustion engines Schematically disclosed is an engine control apparatus wherein cylinder psure is sensed before and after the top dead center position. Desired cylinder pressure curves are stored in a microcomputer for a range of engine speed-load combinations. By electr... | 08/21/1984 |
| 4455980 | Engine combustion control method A sensor for detecting the internal pressure is provided in the cylinder to detect the combustion condition in the engine cylinder. In order to process the output of the sensor in accordance with the volume of the combustion chamber, the amount of change ... | 06/26/1984 |
