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| Number | Title | Issue Date |
| 7661407 | Control system for internal combustion engine A control system for an internal combustion engine, which is capable of enhancing the accuracy of fuel control and ignition timing control even when there is a possibility that the reliability of a calculated intake air amount lowers, and enables reduction of manufa... | 02/16/2010 |
| 7370634 | Internal combustion engine spark timing control system A method for controlling spark timing in an internal combustion engine. The method includes determining, in response to a knock sensor mounted to the engine, a spark offset to the scheduled spark timing for the engine at relatively low engine speed which is applied ... | 05/13/2008 |
| 7347081 | Knock detecting apparatus and method for internal combustion engine The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the si... | 03/25/2008 |
| 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 |
| 7295916 | Method and device for detecting knocking A method and a device for detecting knocking, in which a measurement signal of a knock sensor is evaluated during combustion in a cylinder of a combustion engine to determine whether the combustion occurred with knocking. The measurement signal is subdivided into a ... | 11/13/2007 |
| 7251571 | Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, compari... | 07/31/2007 |
| 7246599 | Method for determining the ignition angle A method for determining the ignition angle is provided, in which modifications of manipulated variables which have an influence on the knock limit, and therefore on the optimum ignition angle as well, are dynamically taken into account. To this end, a base ignition... | 07/24/2007 |
| 7243020 | Knock detection apparatus and knock detection method A knock detection apparatus which is capable of changing a knock control starting time period appropriately so as to prevent erroneous knock determination, to thereby expand a knock control range. A peak value acquisition unit acquires a peak value of a vibration of... | 07/10/2007 |
| 7171949 | Ignition timing controller for internal combustion engine A crank angle sensor outputs a crank angle signal pulse every when a crankshaft rotates a predetermined crank angle. A time period sufficient for rotating a crankshaft between adjacent crank angle signal pulses is measured. The time period is referred to as a rotati... | 02/06/2007 |
| 7159565 | Method of controlling ignition timing in internal combustion engine An internal combustion engine includes an in-cylinder injector injecting a fuel into a cylinder and an intake port injector injecting a fuel into an intake port. In the internal combustion engine, when a fuel injection ratio between the in-cylinder injector and the ... | 01/09/2007 |
| 7134423 | Ignition diagnosis and combustion feedback control system using an ionization signal This feature of the present invention comprises an ignition diagnostics and feedback control system based upon detected ionization current in an individual cylinder. The system is divided into two subsystems: an ignition diagnostics subsystem and an ignition feedbac... | 11/14/2006 |
| 7096722 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. A control module applies a voltage potential to the ele... | 08/29/2006 |
| 7076003 | Constellation design for modem receiver A method of forming a constellation design, and a receiver having both a processor that generates the constellation design and having a comparator. The particular constellation design described herein reduces errors resulting from a noisy communication channel. The ... | 07/11/2006 |
| 7055372 | Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging The present feature of the invention comprises a method and apparatus for determining cylinder ID. When a cylinder is compressed, the resistance increases across the spark plug gap. Thus, if a spark coil is only partially charged before activation of the spark, the ... | 06/06/2006 |
| 7051712 | Method for computing an ignition angle of an internal combustion engine A method for computing an ignition angle of an internal combustion engine as a function of the operating conditions of the engine and knock signals K, which indicate knocking combustion in the engine. If knock occurs, the ignition angle is retarded. If knock stops f... | 05/30/2006 |
| 7051711 | Knock recognition in internal combustion engines with modifications by changing filter characteristics or cylinder specific changes Devices and methods for knock detection and knock control are described, in which, in addition to the customary component parts, the knock-detection circuit has a filter with switchable filter characteristic. The switchover of the filter characteristic, i.e. the shi... | 05/30/2006 |
| 7040285 | Knocking control apparatus and knocking control method for internal combustion engine A knocking control apparatus for an internal combustion engine, which is applied to an internal combustion engine including a variable valve mechanism that can vary a valve characteristic of at least one of an intake valve and an exhaust valve, and which changes an ... | 05/09/2006 |
| 7010418 | Method and device for blanking out interference noise during knock recording in an internal combustion engine The present invention creates a method and an apparatus for blanking out interfering noise in connection with detecting knocking in an internal combustion engine. The following functions are performed: Forming a sensor signal integral value (KI) during a measurement... | 03/07/2006 |
| 7007663 | Internal combustion engine knock control apparatus and method When a fuel injection period and a knock determination period switch from a state in which they do not overlap to a state in which they do overlap, operational noise from a fuel injector rides on an output signal from a knock sensor during the knock determination pe... | 03/07/2006 |
| 6993960 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. The electrode may be integrated with an igniter. A cont... | 02/07/2006 |
| 6947828 | Knock control system for internal combustion engine A knock control system for an internal combustion engine having a plurality of cylinders. Operation of the engine is switchable between a partial-cylinder operation for operating some of the cylinders and an all-cylinder operation for operating all of the cylinders.... | 09/20/2005 |
| 6923046 | Arrangement and method to measure cylinder pressure in a combustion engine The pressure in a cylinder of a combustion engine is determined on the basis of vibrations in the engine which are generated during movement of the piston. A vibration signal (S) from a vibration sensor situated on a cylinder is filtered in the region about the pist... | 08/02/2005 |
| 6912460 | Method for detecting knock in an internal combustion engine The method for knock detection includes establishing that knock is occurring in the internal combustion engine when the amplified knock signal exceeds a predetermined reference level in a predetermined manner. The reference level is determined on the basis of indivi... | 06/28/2005 |
| 6796288 | Method for controlling incidences of combustion in an unloaded internal combustion engine A method for controlling incidences of combustion in an unloaded internal combustion engine of a vehicle. The method includes, determining a load-dynamics threshold, detecting an unloaded operating state of the internal combustion engine, detecting an incidence of t... | 09/28/2004 |
| 6732709 | Dynamic engine timing control A method and apparatus for controlling timing of an internal combustion engine having a piston located in a cylinder. The method and apparatus includes determining a first angular position of a crankshaft at a first location along a longitudinal axis of the cranksha... | 05/11/2004 |
| 6722343 | Knock control device for an internal combustion engine Based on an ionic current intensity determined by ionic current intensity learning means for determining the ionic current intensity based on an output from an ionic current detection circuit, at least one of a comparison reference value of a comparison reference va... | 04/20/2004 |
| 6427662 | Knock control apparatus for internal combustion engine A knock control apparatus for an internal combustion engine includes a knock detector for extracting a vibration component superposed on an ion current, and waveform shaping it at a predetermined threshold value to generate a train of knock pulses (Kp) of... | 08/06/2002 |
| 6328016 | Knock suppression control apparatus for internal combustion engine A knock suppression control apparatus for an internal combustion engine which can avoid erroneous knock detection and hence the erroneous knock suppression control, to thereby ensure knock suppression control with high reliability. The knock suppression c... | 12/11/2001 |
| 6279536 | Method for knock regulation in an internal combustion engine A method for knock regulation in an internal combustion engine, includes using signals from at least one knock sensor to obtain knock values (KW) and using these knock values (KW) to form knock thresholds (KS) with which the knock values (KW) are compared... | 08/28/2001 |
| 6167868 | Method for determining ignition angles for individual cylinders in a multicylinder internal combustion engine A method for determining ignition angles for individual cylinders in a multicylinder internal combustion engine forms the ignition angles for the individual cylinders, based on values of a basic family of characteristics (KFB) which applies to ... | 01/02/2001 |
| 6161523 | Method for determining the advance ignition angle internal combustion engines ignition systems A method for determining the ignition point in ignition systems for internal combustion engines, having integrated knock control, a basic ignition point being determined on the basis of measured operating parameters using a stored characteristic map. The ... | 12/19/2000 |
| 6145491 | Method for detecting combustion knock from the ionic current in an internal combustion engine A method of recognizing knocking combustion in an internal combustion engine involves sensing an ionic current in the combustion chamber and providing a corresponding ionic current signal, detecting the signal during a pertinent time window and band-pass ... | 11/14/2000 |
| 6091244 | Method and arrangement for detecting combustion misfires of a internal combustion engine The invention is directed to a method of detecting combustion misfires of an internal combustion engine wherein an ion current is generated during the operation of the engine. The ion current signal is detected over a pregiven time interval starting with ... | 07/18/2000 |
| 5560337 | Knock control using fuzzy logic Internal combustion engine ignition timing is adjusted in response to a sensed knock condition and in response to a determination of engine knock propensity through application of fuzzy logic, wherein an inference engine comprised of a predetermined knowl... | 10/01/1996 |
| 5529040 | Control device for an internal combustion engine The present invention controls ignition timing appropriately while an increment correction of the fuel injection amount is implemented. A control device of the invention determines a retard angle based on a difference between a prior increment factor, whi... | 06/25/1996 |
| 5411000 | Ignition timing control system for internal combustion engine Ignition timing control system for internal combustion engines. The system comprises a means for detecting operating parameters of the engine such as engine speed, engine load, the presence of knock, a means for determining a basic ignition timing on the ... | 05/02/1995 |
| 5404854 | Knock control system for internal combustion engine A knocking vibration detecting unit (1) and a knock deciding unit (c) are integrated, and the communications of a knock intensity between the knock deciding unit (c) and an engine controlling microcomputer (7) are carried out in combination of a change fr... | 04/11/1995 |
| 5295466 | Knock suppression apparatus for an internal combustion engine A knock suppressing apparatus for an internal combustion engine includes knock sensing means for sensing knocking of an engine and lag angle calculating means responsive to the knock sensing means for calculating a lag angle when knocking is sensed. A bas... | 03/22/1994 |
| 5233962 | Knock strategy including high octane spark advance A method is provided for controlling knock on an internal combustion engine. The method includes the steps of determining a maximum value of knock and determining whether conditions are right for updating the maximum value of knock. The method also includ... | 08/10/1993 |
| 5205258 | Knock suppressing apparatus and method A knock suppressing apparatus for an internal combustion engine includes an amplifier that amplifies the output signal of a knock sensor for sensing engine vibrations. A vibration level signal and a threshold signal are generated based on the amplifier ou... | 04/27/1993 |
