Hitachi, Ltd.

Yoshishige Ohyama

Toshimichi Minowa

Minoru Ohsuga

Toshiharu Nogi

Yutaka Nishimura

Mamoru Fujieda

Hiroshi Kimura

Yoshiyuki Yoshida

Teruo Yamauchi

Hiroshi Kuroiwa

Takuya Shiraishi

Nobuo Kurihara

Hiroyuki Yamada

Tatsuya Ochi

Mineo Kashiwaya

Jun'ichi Yamaguchi

Tadashi Kirisawa

Takashi Shiraishi

Noboru Sugiura

Masahiko Ibamoto

Shigeru Azuhata

Junichi Ishii

Naoyuki Ozaki

Yoshio Sato

Nobuaki Miyakawa

Minoru Oosuga

Hiroatsu Tokuda

Motohisa Nishihara

Torazo Nishimiya

Kazuyuki Ito

Shigeyuki Kemma

A drive system composed of an engine and a transmission is controlled in accordance with a desired wheel toque corresponding to a position of an accelerator, and a present vehicle speed in such a way that a speed ratio of the transmission is determined in consideration with torque factors such as an air-fuel ratio on the engine side, thereby it possible to optimize the control in order to reduce the emission of exhaust substance such as NOx and to enhance the acceleration performance and the fuel economy.

Control apparatus for drive system

Control apparatus for drive system composed of engine and transmission

An air intake arrangement for an internal combustion engine comprising: a main air intake conduit leading to a gas intake valve ( ) for respective engine cylinders ( ) and including a main air intake passage ( ), a main collector chamber ( ) and independent branching air intake passages ( ) for the respective engine cylinders ( ) connected in series; a throttle valve ( ) disposed in the main intake air passage ( ) for controlling the flow rate of air passing therethrough; an auxiliary air intake passage ( [object Object]

Air intake arrangement for internal combustion engine

In an engine system, an ignition timing is changed in accordance with operation parameters of an engine. The engine system includes an exhaust gas clarifying equipment with a catalyst to clarify the specified components in the exhaust gas, catalyst temperature detecting unit for estimating or detecting the temperature of the catalyst, torque fluctuation detecting unit for detecting the state of fluctuation of an output torque of the engine, and ignition timing calculating unit for calculating the final ignition timing on the basis of the detected results of the torque fluctuation detecting unit and the catalyst temperature detecting unit.

Engine system and engine control method

A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission. In particular, the processor reads the detected engine torque from the first detector and the detected vehicle speed from the second detector, determines a new transmission gear ratio based upon the engine torque and the vehicle speed, and outputs a signal representing the new transmission gear ratio to the automatic transmission, whereby a gear shifting operation is effected at a timing based on an engine torque variation due to an operating air/fuel ratio change.

Change gear control device using acceleration and gear ratio as

A driving power control apparatus for a motor vehicle. For meeting acceleration performance demanded by a driver of the motor vehicle, engine torque produced by an internal combustion engine and driving torque of the motor vehicle determined by the engine torque and a speed change ratio of a transmission are controlled coordinately for thereby allowing acceleration satisfying exactly the driver's demand.

Method and apparatus for controlling driving power of motor vehicle

A control apparatus for a gas turbine having an air flow control valve for controlling the flow rate of combustion air in an air flow passage from a compressor to the gas turbine, includes an air velocity or flow sensor arranged in the vicinity of the air flow control valve. A control unit operates to control the opening of a fuel flow regulation valve and/or an air flow control valve on the basis of a signal from the air velocity or flow sensor, thereby to control the air fuel ratio in a combustion section of the gas turbine.

Control apparatus for and control method of gas turbine

An injection port of a fuel injection valve is provided in the combustion chamber, an ignition source is provided in the vicinity of the injection port, a fuel-air mixture is ignited after fuel is injected from the fuel injection valve, and the energy of fuel jet flow is used so that the resulting flame may be carried on the fuel jet flow, thereby to elevate the penetration force, whereby the flame is dispersed in the combustion chamber.

Apparatus and method of fuel injection and ignition of internal

Torque control method and apparatus for an internal combustion engine of a motor vehicle. A value of a desired drive shaft torque for the motor vehicle is determined on the basis of at least an accelerator pedal stroke for thereby controlling a drive shaft torque of the motor vehicle so as to assume the desired drive shaft torque value by controlling a gear ratio of a transmission gear coupling an output shaft of the engine to at least a drive shaft of the motor vehicle on the basis of the value of the desired drive shaft torque as determined. A gear ratio of the transmission gear and a flow rate of intake air fed to the engine are determined through different procedures in dependence on whether or not a torque transfer mechanism coupling the output shaft of the engine to an input shaft of the transmission gear is in a lock-up state in which the output shaft and the input shaft are coupled directly without slip. The drive shaft torque of the motor vehicle is so controlled that it assumes the desired drive shaft torque by controlling the transmission gear and engine intake air flow rate such that the determined gear ratio and the determined intake air flow rate can be realized.

Torque control method and apparatus for internal combustion engine and

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Katsuta, Japan

Yoshishige Ohyama