Nippondenso Co., Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Yoshiro Uchida

Hajime Akado

Akihide Yamaguchi

Suminobu Ootsubo

Takao Nonoyama

Toshiro Harada

Kenichi Kubota

Tsutomu Tomita

Hisao Esaki

Toshiharu Hasebe

In an air cleaner including a case open at the top and closed at the bottom, a cap covering the open top of the case, the case and/or the cap being formed of synthetic resin, and an annular air filter element fitted in the case, a holding plate is mounted on the bottom of the case for movement axially of the case, and a spring for urging the holding plate toward the cap is mounted between the bottom of the case and the holding plate, so that the filter element can be sealingly held between the holding plate and the cap of the case through gaskets. The holding plate has secured thereto a plate spring resiliently engaging the inner circumferential surface of the filter element for securing the latter in place. A stepped support plate is secured to the bottom of the case for restricting the vertical movement of the holding plate.

Air cleaner housing

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 mounted in an air cleaner has an inlet connected to an intake manifold of an engine and an outlet connected to a negative pressure chamber of a negative pressure motor for actuating a switching valve pivotally mounted in a throat of the air cleaner, by the opening of the switching valve warmed air around an exhaust manifold of the engine being introduced into the air cleaner for the purpose of ensuring a smooth starting and operation of the engine. The thermostatic valve, for controlling the introduction of the warmed air as well as an amount of additional air fed to the engine as a function of the temperature in the air cleaner, has inside thereof a first passageway communicating the inlet with the inside thereof, a second passageway communicating the outlet with the inside and a third passageway communicating the inside with the air cleaner. A valve member is operatively disposed in both of the first and third passageways for respectively controlling the opening area of the first passageway and the opening and closing of the third passageway, so that the amount of the additional air is controlled through the first passageway and the application of the negative pressure from the intake manifold to the negative pressure motor is controlled by the closure and opening of the third passageway.

Temperature responsive device for internal combustion engine

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

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Toyota, Japan

Yoshiro Uchida