Nippondenso Co., Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Suminobu Ootsubo

Hajime Akado

Akihide Yamaguchi

Yoshiro Uchida

Takao Nonoyama

Kenichi Kubota

Toshiro Harada

Tsutomu Tomita

Toshiharu Hasebe

A thermostatic valve for intake air temperature compensation for an internal combustion engine includes a housing formed with first, second, and third openings leading, respectively, to the atmosphere, a negative pressure motor, and the intake manifold of the engine. To this housing is secured a temperature sensor including a piston rod to be actuated by a thermally expandable element whose volume increases or decreases with a change in temperature. A valve element to be moved into and out of contact with a valve seat by the piston rod of the temperature sensor is accommodated in a casing. Inside the casing a holed partition member is disposed between the first and third openings and between the second and third openings, and a check valve designed to open in one direction only is located between the partition member and the third opening.

Thermostatic valve for intake air temperature compensation for internal

A thermostatic valve, used in an engine for introducing warmed air to the engine and air to a slow-port passage of a carburetor, has a valve casing defining therein first and second compartments. A first valve member is disposed in the first compartment to control the introduction of the intake vacuum or the atmospheric pressure to a negative pressure motor mounted on a throat of an air cleaner. A second valve member is disposed in the second compartment to control the communication between a float chamber and the slow-port passage of the carburetor when the temperature of the air introduced into the engine exceeds a preset value so as to prevent excessive richness of an air-fuel mixture.

Temperature responsive device for internal combustion engines

Growing community of inventors

Toyota, Japan

Suminobu Ootsubo