Rear wheel steering apparatus for automobile

Details Rear wheel steering apparatus for automobile Rear wheel steering apparatus for automobile

1988-11-18

1990-05-22

Marmor, Charles A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180142, 180143, 280 91, 36442605, B62D 600, B62D 714

Patent

active

049269550

ABSTRACT:
A rear wheel steering apparatus for an automobile detects a vehicle speed and turns rear wheels at a rear wheel turning angle ratio according to the detected vehicle speed upon turning of front wheels. The apparatus includes a vehicle speed detection section for detecting a vehicle speed, a setting section for setting a rear wheel turning angle ratio in accordance with the vehicle speed detected by the vehicle speed detection section, a travel detection section detecting a travel state of a vehicle, a change section for changing turning angle ratio control by the setting section to fail-safe control when a detection output from the vehicle speed detection section is zero and the travel detection section detects the travel state of the vehicle, a brake detection section for detecting a brake operation state, and an inhibition section for inhibiting a change from the normal turning angle ratio control to the fail-safe control by the change section when the brake detection section detects a brake operation state.

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