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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Haraguchi; Hiroshi
Address:
Kariya, JP
No. of patents:
45
Patents:












Patent Number Title Of Patent Date Issued
8175789 Combustion controller for compression-ignition direct-injection engine and engine control system May 8, 2012
As a compression-ignition direct-injection engine combustion controller, a program for detecting ignition timing of a main injection Mn (main ignition timing), a program for correcting a command value of main injection execution timing in a direction to the side where a detection val
7926331 Detection of fuel property based on change in rotational speed of engine April 19, 2011
There is disclosed a fuel property detector for detecting a property of fuel injected by a fuel injector into a cylinder of an internal combustion engine. The fuel property detector includes an injection commander, a change detector, and a fuel property determiner. The injection comm
7836693 Exhaust recirculation apparatus for engine and method for controlling the same November 23, 2010
An exhaust recirculation apparatus is provided to an engine. A high-pressure EGR passage branches from upstream of a turbine of a turbocharger in an exhaust system for recirculating exhaust gas to downstream of a compressor of the turbocharger in an intake system. A high-pressure EGR
7707994 Fuel injection controller May 4, 2010
A single fuel injection is performed in either one of cylinders during fuel cut control of a diesel engine to sense torque generated with the single fuel injection based upon an increase amount of rotation speed of a crankshaft at the time. Presence/absence of abnormality in an injection
7647161 Fuel injection controller and fuel injection system using the same January 12, 2010
A fuel injector performs a main injection and a pilot injection prior to the main injection. A fuel injection controller detects an ignition timing of a fuel injected at the main injection, detects a driving condition of the internal combustion engine, and varies a pilot injection qu
7637245 Method and system for controlling an actuator to rotate a valve December 29, 2009
In a system, an actuator is linked to a valve rotatably installed in a passage through which gas flows. The actuator changes torque to be applied to the valve so as to adjust a rotational position of the valve based on a deviation between a current position and a target position. In
7606651 Apparatus for controlling timings of intervals in which combustion chamber pressure data are acq October 20, 2009
A control apparatus for a multi-cylinder internal combustion engine includes pressure sensors used for acquiring combustion chamber pressure data for each engine cylinder, during each of a series of selection intervals respectively corresponding to that cylinder, with each selection
7574298 Fuel injection controller August 11, 2009
A fuel injection controller of an internal combustion engine decreases a target intake quantity stepwise and increases an opening degree command value of an EGR valve stepwise when the controller switches control to rich combustion control. Accordingly, an intake quantity gradually d
7542865 Abnormality determination device of cylinder pressure sensor June 2, 2009
An abnormality determination device of a cylinder pressure sensor calculates a gain (sensing sensitivity coefficient) and an offset (bias) indicating an output characteristic of the cylinder pressure sensor. The device determines existence or nonexistence of an abnormality in the gain
7513245 Engine torque control apparatus and method for adjusting engine torque control apparatus April 7, 2009
An engine torque control apparatus is applied to an engine control system comprising an engine for rotating an output shaft by using torque generated through combustion in cylinders. In the apparatus, exhaust gas passing through an exhaust passage of the engine is partially recircula
7509938 Internal combustion engine control apparatus March 31, 2009
The internal combustion engine control apparatus includes a calculation function of calculating an energy generation rate of an energy generated by combustion of fuel injected into a combustion chamber of a compression-ignition internal combustion engine, and an ignition detection fu
7395148 Fuel injection controller for internal combustion engine July 1, 2008
A fourth cylinder is mounted with a cylinder pressure sensor. The injection timing of the fourth cylinder is operated so as to feedback control the ignition timing of the fourth cylinder, which is detected by the cylinder pressure sensor, to a target ignition timing. The ignition tim
7367311 Control system for compression ignition internal combustion engine May 6, 2008
A compression ignition internal combustion engine includes injectors, each of which injects fuel into a corresponding cylinder. An ECU determines target ignition timing based on engine operational information and adjusts fuel injection start timing and a fuel injection quantity of each
7313913 Exhaust gas purification system of internal combustion engine January 1, 2008
An oxidation catalyst is disposed upstream of a diesel particulate filter (DPF) in an exhaust passage of a diesel engine. An electronic control unit (ECU) operates temperature increasing circuit to combust and eliminate particulate matters deposited on the DPF. The ECU determines exe
7254941 Exhaust gas cleaning device for internal combustion engine August 14, 2007
In an engine, when it is determined that catalyst, which is held on a filter substrate of a particulate filter, is not in an active state, an ECU executes a fuel injection for mainly obtaining an engine power near a top dead center of a crank. Then, the ECU executes a subsequent fuel
7254473 Compression ignition engine control apparatus ensuring desired output of torque August 7, 2007
An engine control apparatus for a multi-cylinder compression ignition internal combustion engine includes a combustion status sensor and a controller. The combustion status sensor is installed in a selected one of cylinders of the engine. The controller works to sample an output from
7231761 Exhaust gas purification system of internal combustion engine June 19, 2007
An electronic control unit of an internal combustion engine calculates a basic post-injection quantity of temperature increasing means if a deposition quantity of particulate matters deposited on a diesel particulate filter (DPF) exceeds a predetermined value. Then, a final post-inje
7180596 Gas concentration detector February 20, 2007
A gas concentration detector prevents deviation in output due to a difference in oxygen reactivity between electrode materials to accurately detect a specific gas component in a gas to be measured, such as NOx in an exhaust gas. A sensor element in an NOx sensor has a pump cell in a
7178326 Exhaust gas purifying apparatus February 20, 2007
An ECU controls an opening degree of an EGR gas switch valve based on a temperature of intake air and a load state of an engine in such a manner that a temperature of exhaust gas becomes a suitable temperature, which is suitable for regeneration of a particulate filter arranged in an
7150264 Control device for internal combustion engine December 19, 2006
Deterioration of emission is restrained even if the actual control condition including the required torque is different from the set control condition. An ECU establishes a control amount of an EGR valve in such a manner that a condition amount, which is a control parameter controlling
7146964 Engine control system December 12, 2006
When a combustion mode of an engine is a diffuse combustion mode in which an initial rising inclination of a heat-release-rate is steep, an electronic control unit (ECU) calculates an ignition timing in which the heat-release-rate exceeds an ignition determining value. Thus, even if a
7117082 Controller for internal combustion engine October 3, 2006
An ECU converts a cylinder pressure P and a cylinder volume V corresponding to a crank angle .theta. at least from a compression stroke to a combustion and expansion stroke to a logarithmic value log P and a logarithmic value log V, respectively, to find a logarithmic conversion wave
7007664 Fuel injection control system of internal combustion engine March 7, 2006
An electronic control unit (ECU) of a fuel injection control system of an internal combustion engine feedback-controls injection timing so that a cylinder pressure maximum value coincides with a target pressure value in an operation range, in which the cylinder pressure maximum value
6990958 Injection control system of diesel engine January 31, 2006
An electronic control unit (ECU) of an injection control system of an internal combustion engine determines that a load of a fuel pump is stabilized when a pressure-feeding operation delay elapses since a command pressure-feeding quantity outputted to the fuel pump reaches a certain
6988030 Injection control system of internal combustion engine January 17, 2006
An electronic control unit (ECU) of an engine calculates a first modification value for decreasing a correction value of an injection period when a state variation of the engine caused by a single injection is greater than a target value. The ECU calculates a second modification valu
6712053 Control system for internal combustion engine March 30, 2004
An O.sub.2 amount in the intake air is determined based on a fresh air and an EGR gas. A consumed O.sub.2 amount is determined with a command injection amount Qr. Then, the consumed O.sub.2 amount is subtracted from the O.sub.2 amount in the intake air to obtain an exhaust O.sub.2 amount
5544639 Temperature predicting system for internal combustion engine and temperature control system incl August 13, 1996
A temperature projecting system includes a temperature sensor for monitoring a temperature of an objective portion where the temperature changes depending on an engine operating condition. The temperature projecting system projects an actual temperature of the objective portion based
5417060 Air fuel ratio control apparatus for an internal combustion engine May 23, 1995
An air fuel ratio controlling apparatus for an internal combustion engine, comprises: a catalytic converter, provided in an exhaust system for purifying an exhaust gas of the engine; a first oxygen density sensor, provided upstream from the catalytic converter in the exhaust system,
5404854 Knock control system for internal combustion engine April 11, 1995
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 from the previous value of a signal
5329904 Engine control apparatus for discriminating cylinders July 19, 1994
An engine control apparatus for discriminating each cylinder of an engine comprises a crank angle rotor (M1) having a configuration representing a crank angle of an engine; a crank angle sensor (M2) operatively associated with the crank angle rotor (M1) to generate a crank angle signal i
5251438 Air-fuel ratio control apparatus for engine October 12, 1993
An air-fuel ratio feedback control apparatus for a gas engine. A mixer mixes intake air and a fuel gas. A subsidiary supply path supplies at least one of the intake air and the fuel gas downstream of the mixer. Oxygen concentration sensors detect a concentration of oxygen in an exhau
5154053 Air-fuel ratio control apparatus for engine October 13, 1992
An air-fuel ratio control apparatus in which an air-fuel ratio of a mixture gas supplied to an engine, especially, a gas engine, is controlled in accordance with an output signal of each of oxygen concentration sensors disposed in upper and lower streams of an exhaust gas catalyzer of th
5090199 Apparatus for controlling air-fuel ratio for engine February 25, 1992
An air-fuel ratio control apparatus for an engine for controlling a fuel injection amount so that an air-fuel ratio of a mixture gas which is supplied to the engine is set to a stoichiometric air-fuel ratio is disclosed. The apparatus has a first oxygen concentration sensor on the up
5018362 Apparatus for controlling automotive air conditioner May 28, 1991
An automotive air conditioner controller for controlling the operation of an automotive air conditioner employing a variable displacement compressor capable of gradually or continuously varying its displacement. While the engine of the automobile is idling, the automotive air conditioner
5003955 Method of controlling air-fuel ratio April 2, 1991
A method of controlling the air fuel ratio in internal combustion, engines, comprising the steps of: updating first learning terms at a first learning speed in response to a signal from the air-fuel-ratio sensor and respectively storing them in a reloadable memory device, the first l
4770144 Knock control apparatus and method for internal combustion engines September 13, 1988
A knock control apparatus for an internal combustion engine which prevents variation of a control knock sound even if an output of a knock sensor is varied due to the variations in performance among different engines or knock sensors, aging of the engine or knock sensor or the like. A gi
4760828 Ignition timing controller for multi-cylinder engine August 2, 1988
An ignition timing control arrangement for an internal combustion engine having a plurality of cylinders. It is determined whether the same cylinder is knocking on successive engine cycles or whether different cylinders are knocking. The ignition timing of only a single cylinder is r
4711214 Anti-knocking control in internal combustion engine December 8, 1987
In a system for controlling knocking in an internal combustion engine, a reference value to be compared with a knock sensor signal for determining the presence or absence of the knocking is corrected in accordance with the pattern of a distribution obtained by collecting the logarithmic
4711213 Knock control system for internal combustion engines December 8, 1987
A knock control system for an internal combustion engine has a knock discrimination level. If an output signal from a knock sensor is higher than the knock discrimination level, then the knock control system determines that the engine is subjected to knock and retards the ignition ti
4711212 Anti-knocking in internal combustion engine December 8, 1987
Disclosed is an anti-knocking control system for controlling an internal combustion engine to prevent knocking in accordance with a knocking condition detected by a knock detecting apparatus on the basis of a distribution pattern of knock magnitude values derived from the output sign
4699106 Knock control system for internal combustion engines October 13, 1987
A knock control system for an internal combustion engine has a knock discrimination level. If an output signal from a knock sensor is higher than the knock discrimination level, then the knock control system determines that the engine is subjected to knock and retards the ignition ti
4617895 Anti-knocking control in internal combustion engine October 21, 1986
In a system for controlling knocking in an internal combustion engine, a reference value to be compared with a knock sensor signal for determining the presence or absence of the knocking is corrected in accordance with the pattern of a distribution obtained by collecting the logarithmic
4590565 Ignition timing control for compensating knock in both steady-state and transient state May 20, 1986
The ignition timing of an internal combustion engine is controlled to an optimum by compensating for engine knock. A microcomputer includes a memory for storing steady-state and transient-state ignition timing variables which are derived as a function of an operating condition of the
4498331 Knocking detecting apparatus for internal combustion engines February 12, 1985
In a knocking discriminating system for an internal combustion engine, a knocking detecting signal obtained from a knocking sensor is passed through a band-pass filter for obtaining a sinusoidal waveform of approximately 8 KHz. The sinusoidal waveform signal is then applied to an A/D
4489692 Ignition timing control system for internal combustion engine with knock sensor December 25, 1984
A spark timing control apparatus controls the spark timing to retard or advance in accordance with the output signal from a knock sensor. An accelerating condition of the engine is determined depending on a particular knock occurence patterns including; whether the interval of knock










 
 
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