Toyota Jidosha Kabushiki Kaisha

Aisan Kogyo Kabushiki Kaisha

Toyota Jidoshi Kabushiki Kaisha

Toru Sato

Masahiko Masubuchi

Kazuhiro Yoneshige

Kazusato Kasuya

Kichiro Kato

Kenya Maruyama

Masanori Senda

Takehiko Tanaka

Kouichi Mizutani

Katsunao Takeuchi

In a fuel discharge preventive device of a gas engine, in order to prevent high-pressure gaseous fuel remaining in a fuel distributing pipe when an engine is stopped, from leaking out of a gaseous fuel injection valve to be discharged to the open air, a fuel shut-off valve is provided in a fuel feed passage through which gaseous fuel is fed to the gaseous fuel injection valve, and a suction passage communicating with a gaseous fuel storing portion is branched off from the fuel feed passage between the gaseous fuel injection valve and the fuel shut-off valve, so that the gaseous fuel in a potion of the fuel feed passage located between the gaseous fuel injection valve and the fuel shut-off valve is stored in the gaseous fuel storing portion after the engine is stopped and hence the fuel shut-off valve is closed, while the stored fuel is purged to the engine when the engine is being operated.

Fuel discharge preventive device of gas engine

An apparatus for controlling the idling speed of an engine is disclosed. An idling speed control valve disposed in an idle passage communicates with the intake passage downstream and upstream of the throttle valve to control the amount of the airflow supplied to the idling engine. A neutral start switch outputs an instruction signal to an ECU based on a switching operation of a shift lever from its neutral range to a drive range. Based on the instruction signal, the ECU computes a duty factor to increase the airflow amount through the idle speed control valve to a predetermined amount. The increased airflow amount is subsequently attenuated to a predetermined magnitude with an attenuation factor based on a change rate of the engine speed.

Apparatus for controlling the speed of an engine

Growing community of inventors

Chita, Japan

Toru Sato