Toyota Jidosha Kogyo Kabushiki Kaisha

Aisan Kogyo Kabushiki Kaisha

Mitsuya Yoshihara

Mitsunori Sasano

Mikio Goto

Koichi Oosawa

An exhaust gas recirculating control system for internal combustion engines including an engine vacuum operated exhaust gas recirculating valve which allows recirculation of the engine exhaust when a high vacuum is applied, an engine vacuum operated vacuum control valve which allows air pressure to be applied to the exhaust gas recirculation valve when the engine vacuum exceeds a predetermined level, and a vacuum transmitting valve which delays in time the application of engine vacuum to the vacuum control valve. In this way, exhaust gas recirculation occurs during a fixed period after acceleration of the vehicle occurs.

Growing community of inventors

Nagoya, Japan

Mitsuya Yoshihara