Brake control apparatus in diagonal braking pressure supply syst

Details Brake control apparatus in diagonal braking pressure supply syst Brake control apparatus in diagonal braking pressure supply syst

1989-11-09

1991-06-04

Lall, Parshotam S.

Boots, shoes, and leggings

36442602, 303 95, 303 97, 303106, B60T 832

Patent

active

050219570

ABSTRACT:
A brake apparatus for use in a motor vehicle having at least one front wheel and at least one rear wheel. The brake apparatus includes a diagonal braking pressure supply system provided between a master cylinder and wheel braking cylinders for applying braking forces to the front and rear wheels. A proportioning valve is provided in the braking pressure supply system for controlling the braking pressure to be applied to the rear-wheel braking cylinder in accordance with a control signal so as to vary the ratio of the braking pressure to the rear-wheel braking cylinder with respect to the braking pressure to be applied to the front-wheel braking cylinder. Also included is an electronic control unit which produces the control signal to the proportioning valve. The electronic control unit obtains a command value on the basis of a parameter corresponding to the difference between the lock states of the front and rear wheels which are in turn obtained on the basis of signals indicative of speeds of the front and rear wheels. The control signal is determined in accordance with the command value and supplied to the proportioning valve.

REFERENCES:
patent: 4566737 (1986-01-01), Masaki et al.
patent: 4671579 (1987-06-01), Sawano et al.
patent: 4793662 (1988-12-01), Arikawa
patent: 4828334 (1989-05-01), Salman
patent: 4855917 (1989-08-01), Sawano et al.

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