Cruise control apparatus

Motor vehicles – With means responsive to speed of vehicle for maintaining... – Including electrically actuated servomechanism

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Details

310 68B, 363147, 357 81, B60K 3100

Patent

active

048846490

ABSTRACT:
A cruise control apparatus for an automobile has a motorized actuator with a motor which adjusts the degree of opening of a throttle valve so as to maintain a desired speed. All or part of the control circuit for the motor is in the form of a hybrid integrated circuit which is mounted on the actuator in a manner such that the actuator can serve as a heat sink for the hybrid integrated circuit. In one form of the invention, the hybrid integrated circuit is mounted on the outer surface of the housing of the actuator motor. In another form of the invention, the hybrid integrated circuit is mounted on the inner surface of the actuator housing. The motorized actuator may be further equipped with a contactless position detector for detecting the rotational position of the output shaft of the actuator motor. The position detector comprises a disk which is rotated by the drive shaft of the actuator, a permanent magnet which is secured to the disk, and two magnetic sensors which detect the magnetic field produced by the permanent magnet. The magnetic sensors are housed within the hybrid integrated circuit.

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