Title:
CONTROLLING METHOD FOR FOUR-WHEEL DRIVE DEVICE
Document Type and Number:
Japanese Patent JPS6361634
Kind Code:
A
Abstract:
PURPOSE:To set a system to a state of being approximated to direct four-wheel drive at the time of receiving a side wind and thereby improve running stability, by controlling the engaging force of a friction engaging device which controls a torque distribution factor according to at least cross-wind intensity. CONSTITUTION:A controller 45 outputs a control signal for select control over speeds of a transmission 7 in conformity with the preset shift pattern according to a manual range, car speed V and throttle opening theta, to a hydraulic controller 9. And it is constituted so as to output a pulse signal of the specified duty ratio for controlling transfer torque capacity of a differential control clutch 21 according to data to be secured from a cross-wind sensor 49 and the car speed V, to a servo hydraulic control valve 41.
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Inventors:
TAKADA MITSURU
ITO HIROSHI
ITO HIROSHI
Application Number:
JP20311486A
Publication Date:
March 17, 1988
Filing Date:
August 29, 1986
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60K17/35; B60K17/346; (IPC1-7): B60K17/35
Attorney, Agent or Firm:
Watanabe