Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Jukogyo Kabushiki Kaisha

Takashi Dogahara

Yoshiaki Danno

Daisuke Sanbayashi

Makoto Shimada

Katsuo Akishino

Osamu Hirako

Takehiko Katsumoto

Shinichi Murata

Norihisa Kobayashi

Kozo Iida

Yasuki Tamura

Nobuaki Murakami

Hiromitsu Ando

Kinichi Iwachido

Kojiro Okada

Kazuo Koga

Kiichi Yamada

Osamu Nakayama

Jun Takemura

Shigeo Yamamoto

Kazuyoshi Nakane

Masayuki Hashiguchi

Hidetsugu Kanao

Susumu Nishikawa

Fumiaki Hiraishi

Satoru Serizawa

Hideo Nakai

Shuji Ikeda

Taizou Kitada

Nobuaki Shimizu

Yoshinari Fukami

Hironobu Sato

Masahiko Matsuda

Hiroshi Kamada

Takaaki Hirano

Masaji Asada

Kazuhiro Okuno

Just after the start of an engine at cold start, an overlap in the opening time of an intake valve ( ) and an exhaust valve ( ) is controlled to include an intake stroke range, such that liquid fuel in an intake port ( ) flows into a cylinder with the downward movement of a piston ( ) without being directly exhausted to an exhaust side, so that the fuel can be combusted without fail.

Variable valve timing apparatus

An NO sensor detects the concentration of NO released from an occlusion type NO catalyst into the atmosphere. Based on the output of the NO sensor a total NO discharge A is computed. When the total NO discharge A reaches an NO emission judgment amount A , corresponding to an NO emission judgment amount designated by NO emission regulations, before a distance traveled C reaches a predetermined distance traveled C , an exhaust air-fuel ratio is changed to a rich air-fuel ratio to release NO from the occlusion type NO catalyst efficiently. Then, the exhaust air-fuel ratio is changed to a stoichiometric air-fuel ratio to purify and reduce NO by a three-way catalyst function.

Exhaust emission control device of internal combustion engine

An in-cylinder injection type internal combustion engine, which includes a main fuel injection control unit that drives a fuel injector to inject fuel directly into a combustion chamber, is provided so that premixed combustion or stratified charge combustion takes place depending upon operating conditions of the engine. The engine further includes an additional fuel injection control unit that drives the fuel injector to inject additional fuel during an expansion stroke after the fuel injector is driven by the main fuel injection control unit, when it is necessary to increase the temperature of a catalyst provided in an exhaust passage for purifying exhaust gas. An exhaust manifold includes an exhaust chamber, in which the exhaust gas remains, and the additional fuel that is left unburned is re-burned in the exhaust chamber.

In-cylinder injection type internal combustion engine

An exhaust gas purifying apparatus, which is intended to improve hydrocarbon purifying performance and simplify the after-treatment of adsorbed hydrocarbon, an in which a three way valve 51 is operated under the control of a controller 80 to cause a bypass exhaust gas passage 30 to be communicated with a main exhaust gas passage, so that hydrocarbon in exhaust gas is adsorbed onto an adsorption catalyst 40 when the temperature of a three way catalyst 20 in the main exhaust gas passage 13 is low. When the three way catalyst temperature increases, the bypass exhaust gas passage is shut off from the main exhaust gas passage by the three way valve and the adsorption catalyst is heated by a heater 60, so that the adsorbed hydrocarbon is oxidized at the adsorption catalyst to form a harmless substance.

Exhaust gas purifying apparatus

This invention has traction control means having slip detecting means for detecting slipping of driving wheels, in accordance with an output signal from the driving wheel velocity detecting means and an output signal from the vehicle body velocity detecting means, and output rate calculating means for generating first instruction A for controlling engine output, in order to immediately decrease a slip rate, based on a slip start signal from the slip detecting means and for, when the slip rate is decreased to a predetermined value, generating second instruction B for controlling the engine to provide an output according to friction coefficient .mu. between a road surface and wheels, and engine output control means for controlling engine output on the basis of the first and second instructions and vehicle operating conditions.

Traction control apparatus for vehicle engine

A running control method and a running control system for a vehicle to control the engine output according to the effects of slope, wind, and change in vehicle weight, in which a reference traction force is determined as the sum of a mechanism friction, an acceleration force, and an air drag, the difference between an actually measured total traction force an the reference traction force is determined to obtain an environmental effect value. The environmental effect value represents an increase or decrease in traction force with respect to that in a flat, windless road for a standard vehicle weight. A throttle valve or a fuel injection control governer is feedback-controlled according to the environmental effect value, thereby improving the control response.

Running control method and running control system

The invention provides a device for detecting an air fuel ratio of an air fuel mixture supplied to the combustion apparatus of an internal combustion engine. The device comprises a sensor cell for developing an electric signal in response to the difference between the concentration of oxygen an exhaust gas and the concentration of oxygen in a reference gas, a controlling means for developing an electric control signal having a polarity determined from an output of the sensor cell, a pump cell for moving oxygen ions in response to an electric control signal received from the controlling means, a control current detecting means for detecting control current flow between the controlling means and the pump cell, an air fuel ratio detecting means for detecting the air fuel ratio from the control current flow, and a stoichiometric air fuel ratio detecting means for detecting the direction of the control current flow so as to determine the stoichiometric air fuel ratio.

Air fuel ratio detecting device

Intake port device

An engine cooling device comprises an oil jacket surrounding a cylinder portion of an engine, an oil gallery supplying high-pressure oil to various parts of the engine, and an oil pressure regulator disposed between the oil jacket and the oil gallery to reduce the pressure of the high-pressure oil supplied from the oil gallery and to supply the oil at a reduced pressure to the oil jacket. Thus, the required mechanical strength of the oil jacket can be decreased to decrease the weight of the engine cylinder block.

Engine cooling device

Disclosed herein is a device for controlling a vehicle engine by controlling a throttle valve by the drive-by-wire method. Using the fact that an acceleration is proportional to an excess torque, a target torque is determined in accordance with a predetermined functional equation by using as input information a target acceleration determined based on the degree of operation of a man-controlled member, the current running acceleration and the current output torque. A target throttle opening rate is set further from the target torque. The throttle valve is then controlled to achieve the target throttle opening rate to predictably control the acceleration, whereby high-accuracy engine control is materialized and drivability is improved.

Vehicle engine controller

A vehicle engine control device includes an operation-degree detecting device for detecting the degree of each operation of a manually operated member effected to control the output of the engine via a throttle valve actuator and a throttle valve; a target acceleration setting device for generating a target acceleration signal corresponding to the degree of the operation of the manually operated member; an acceleration detecting device for detecting each operative acceleration of the vehicle; and a control signal outputting device for comparing the target acceleration signal, which has been generated from the target acceleration setting device, with the detection results from the accelerating detecting device and then outputting a control signal to the actuator so as to control the degree to which the throttle valve is opened in such a way that the operative acceleration of the vehicle is controlled to the target acceleration.

Control system for the throttle valve of a vehicle engine

Growing community of inventors

Okazaki, Japan

Takashi Dogahara