Motor vehicles – With means responsive to speed of vehicle for maintaining... – Including electrically actuated servomechanism
Patent
1987-08-13
1989-03-28
Mitchell, David M.
Motor vehicles
With means responsive to speed of vehicle for maintaining...
Including electrically actuated servomechanism
123361, B60K 2700
Patent
active
048155535
ABSTRACT:
A cruise control apparatus for an automotive engine has an actuator with a moving output member whose movement adjusts the opening of a throttle valve so as to maintain the speed of the automobile at a desired speed. The motion of the output member is converted into linear motion by a motion converter whose speed of motion varies with the degree of the automobile. The speed of throttle valve opening therefore varies with the speed of the automobile and a desired speed so as to provide good responsiveness. In a preferred embodiment, the motion converter is a cylindrical cam which is rotated by the actuator and which has a helical groove with a varying pitch. The rotation of the cylindrical cam causes the linear movement of a sliding block connected with the throttle valve. In another preferred embodiment, the motion converter is a pulley with a variable radius and rotated by the actuator. The rotation of the pulley operates the throttle valve through a wire cable.
REFERENCES:
patent: 4132284 (1979-01-01), Tomecek
patent: 4192398 (1980-03-01), Hunt
patent: 4202424 (1980-05-01), Sakakibara et al.
patent: 4380799 (1983-04-01), Allard et al.
patent: 4385675 (1983-05-01), Blee
Onishi Masayoshi
Yasukawa Takeshi
Mar Michael
Mitchell David M.
Mitsubishi Denki & Kabushiki Kaisha
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