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| Number | Title | Issue Date |
| 7861689 | Method for controlling an internal combustion engine A method for controlling an internal combustion engine with at least two cylinders in the case of irregular running caused by combustion problems has the following steps: measurement of a segment time of a first cylinder during a first time interval T1 in the... | 01/04/2011 |
| 7753027 | Apparatus and method for controlling knock in an internal combustion engine A knock control apparatus for an engine includes: a first determination device that determines whether the engine is knocking based on an output signal of a knocking detector provided in the engine; a controller that retards an ignition timing of the engine when the... | 07/13/2010 |
| 7669582 | Knocking state determination device An engine ECU executes a program including the steps of: calculating a correlation coefficient K based on the result of comparing a vibration waveform of an engine and a knock waveform model stored previously; calculating a magnitude value LOG(V) from the magnitude ... | 03/02/2010 |
| 7588015 | Device and method for controlling ignition timing of internal combustion engine An engine ECU executes a program including a step of, when an absolute value of a difference between a determination value V(KX) used for determining presence or absence of knocking and a maximum value V(MAX) of magnitude value LOG(V), which is obtained by logarithm... | 09/15/2009 |
| 7444231 | Method of mounting an accelerometer on an internal combustion engine and increasing signal-to-noise ratio A method of mounting an accelerometer to an internal combustion engine comprises securing the accelerometer to a mating surface on an engine component external to a combustion chamber where the accelerometer can generate a signal output that is characteristic of eng... | 10/28/2008 |
| 7406944 | Ignition control system A device for ignition control in a cylinder of an internal combustion engine includes an ignition coil which has a connected primary winding and a secondary winding, which is connected to a spark plug. The device also includes an ignition control unit, which connect... | 08/05/2008 |
| 7387107 | Knocking state determination device An engine ECU executes a program including the steps of: calculating a correlation coefficient K based on the result of comparing a vibration waveform of an engine and a knock waveform model stored previously; calculating a magnitude value LOG(V) from the magnitude ... | 06/17/2008 |
| 7370629 | Method for operating an internal combustion engine with direct fuel injection during a post-start phase In a method for operating a spark-ignition internal combustion engine with direct fuel injection in the post-start phase at low temperatures, fuel is supplied to the combustion air in a pilot injection (MH) of a first fuel quantity during an intake stroke... | 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 |
| 7324890 | Ignition timing control apparatus for internal combustion engine An ignition timing control apparatus can obtain high output torque without generating output torque loss, and avoid the deterioration of audibility due to successive knock occurrences. A cylinder specific ignition timing setting section includes a reference ignition... | 01/29/2008 |
| 7318411 | Adaptive ignition dwell based on ionization feedback A system for determining a minimum ignition coil charge duration of an internal combustion engine to meet a desired level of combustion stability includes a sensor in communication with a controller. The sensor is configured to measure the ionization current of a cy... | 01/15/2008 |
| 7310575 | Apparatus for processing sensor signal from knock sensor of internal combustion engine A knock sensor signal processing apparatus for an engine, which performs a series of A/D conversions of a knock sensor signal during each of successive knock judgement intervals to obtain A/D converted values for use in judging if engine knocking is occurring in a c... | 12/18/2007 |
| 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 |
| 7281516 | Ignition timing control device of internal combustion engine An engine ECU executes a program including the steps of: comparing a vibration waveform of an engine and a knock waveform model stored in advance to calculate a correlation coefficient K; prohibiting correction when a correction prohibiting condition of a determinat... | 10/16/2007 |
| 7257482 | Misfire detection apparatus Misfire of an engine is detected by extracting a pressure component of combustion from an output of a pressure sensor disposed in a cylinder. An engine misfire detection apparatus obtains a combustion parameter Cr that is a correlation between a reference signal Fc ... | 08/14/2007 |
| 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 |
| 7243529 | Knock detecting apparatus for internal combustion engine A waveform knock signal detected by a knock sensor is filtered through a band-pass filter. The detected wave form signal is compared with an ideal reference knock waveform to determine an engine knock. The ideal reference knock waveform is derived on the basis of a ... | 07/17/2007 |
| 7222606 | Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). The engine controller (50) calculates a crank angle at knock on the basis of an operating state of the engine (1) ... | 05/29/2007 |
| 7222607 | DSP-based engine knock detection including knock sensor and circuit diagnostics A knock detection system for a spark-ignition engine includes a knock sensor that is responsive to vibration of the engine and that generates a knock signal. A first module calculates a knock energy based on the knock signal and a second module calculates a knock in... | 05/29/2007 |
| 7198038 | Learned EGR valve position control An exhaust gas recirculation (EGR) valve positioning system according to the present invention includes an actuate valve module, an EGR valve position module, and an adjust control variables module. The actuate valve module selectively uses learned and default varia... | 04/03/2007 |
| 7191764 | Control unit for an internal combustion engine A control unit calculates a quantity of air that is taken into an engine from an output current from an air flow meter that is located downstream from a throttle valve. The control unit then determines the quantity of fuel to be injected for this quantity of air. Th... | 03/20/2007 |
| 7181339 | Real-time spectral analysis of internal combustion engine knock A system for, and a method of, obtaining, for analysis, from a subject internal combustion engine, real-time engine knock data involving assessing, as a positive indication of engine knock behavior, whether the energy-content value represented in at least one select... | 02/20/2007 |
| 7174879 | Vibration-based NVH control during idle operation of an automobile powertrain A system and method of operating a vehicle powertrain that employs active control to reduce NVH, particularly during idle. The method includes selectively operating the powertrain in at least a non-idle condition and an idle condition; receiving vibration signals fr... | 02/13/2007 |
| 7152562 | Motorcycle timing adjustment A motorcycle engine's ignition system controls the spark that ignites the fuel in a cylinder. The ignitition system routes high-voltage pulses to individual cylinders of a motorcycle engine in the correct sequence and with precise timing. A timing structure is provi... | 12/26/2006 |
| 7137367 | Control apparatus and control method for internal combustion engine valve actuation An apparatus controls actual actuation of each of a first and a second valve to the corresponding target actuation. A first computing portion computes the target actuation of the first valve and a target valve overlapping amount according to a engine operational sta... | 11/21/2006 |
| 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 |
| 7131425 | Method to control auto-ignition in an internal combustion engine equipped with variable valve timing control A method and control system to accomplish knock control on a multi-cylinder spark-ignition internal combustion engine equipped variable cam phasing system, comprising monitoring cam position, crankshaft position, and, engine knock signal, determining cam position re... | 11/07/2006 |
| 7124012 | Method and device for determining a driver torque setpoint for an internal combustion engine A method for determining the driver torque setpoint uses inputs from a drive pedal sensor, which senses the pedal position of a drive pedal. Depending on at least one switching parameter, different modes of calculation are activated, thus enabling the pedal position... | 10/17/2006 |
| 7121260 | Ignition timing control apparatus for engine An ignition timing control apparatus for an engine includes a controller that sets an ignition timing considering a change of a temperature or a pressure in a combustion chamber at a time when an opening/closing characteristic of an intake valve is changed, the open... | 10/17/2006 |
| 7120536 | Method of diagnosing the operating state of a motor vehicle diesel engine In the method of diagnosing the operating state of a motor vehicle diesel engine of the invention, the engine includes a pressure acquisition system associated with each cylinder of the engine to acquire the pressure in that cylinder, an engine shaft angle acquisiti... | 10/10/2006 |
| 7086382 | Robust multi-criteria MBT timing estimation using ionization signal This feature of the present invention is a robust multi-criteria minimum timing for the best torque (MBT) timing estimation method and apparatus utilizing different ionization signal waveforms that are generated under different engine operating conditions. This feat... | 08/08/2006 |
| 7080629 | Method and device for knock control of an internal combustion engine A method and a device for knock control of an internal combustion engine, in which an adjustment of the ignition angle takes place. When knocking occurs, the ignition angle is retarded and then advanced again. An increasing advance adjustment of the ignition angle r... | 07/25/2006 |
| 7063079 | Device for reducing the part count and package size of an in-cylinder ionization detection system by integrating the ionization detection circuit and ignition coil driver into a single package Two embodiments of an integrated ionization detection circuit and ignition coil driver, an ASIC and a single electronic package, are disclosed. The apparatuses reduce the cost and complexity of an in-cylinder ionization detection system by combining like functionali... | 06/20/2006 |
| 7055502 | Single cylinder engine and vehicle provided with the same A single cylinder engine includes an engine body having a cylinder and a combustion chamber, an intake opening that faces the combustion chamber, and an intake passage in communication with the combustion chamber through the intake opening, a piston provided in the ... | 06/06/2006 |
| 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 |
| 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 |
| 7028644 | High compression ratio, hydrogen enhanced engine system A hydrogen enhanced engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equival... | 04/18/2006 |
| 7021286 | Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). An engine controller (50) calculates an ignition delay of the gas in the cylinder on the basis of an operational state of... | 04/04/2006 |
| 7013871 | Closed loop MBT timing control using ionization feedback This feature of the present invention comprises a closed loop which uses estimated MBT timing criteria and ignition diagnostics (knock, partial-burn, and misfire) to control engine ignition. When the engine is not knock limited, it operates at its MBT timing. When t... | 03/21/2006 |
| 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 |
