Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

1988-07-25

1990-05-01

Marmor, Charles A.

Motor vehicles

Compensating devices

180132, 180142, 192 57, 192 85AA, 192103F, B62D 504

Patent

active

049210610

ABSTRACT:
An electric power steering apparatus is provided with a torque sensor for detecting manual torque input to a steering shaft of an automobile and an electric motor for generating auxiliary steering power so that a load current is applied to the electric motor in accordance with the level of manual torque detected by the torque sensor. The electric motor and a steering system are coupled together through a speed reducing mechanism for reducing the speed of rotation of the electric motor and also through a clutch mechanism. The electric power steering system is further provided with an actuating mechanism for controlling the clutch mechanism such that it is engaged only when the electric motor is rotating. Therefore, the speed reducing mechanism and the electric motor have no adverse effects on the return of the steering wheel.

REFERENCES:
patent: 4753308 (1988-06-01), Noto et al.
patent: 4762194 (1988-08-01), Morishita et al.
patent: 4765425 (1988-08-01), Saito et al.

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