Braking force control apparatus

Details Braking force control apparatus Braking force control apparatus

1996-04-25

1997-08-26

Young, Lee W.

Fluid-pressure and analogous brake systems

Speed-controlled

Pulse frequency or time period controlling pressure rebuild

303157, 364426027, B60T 858

Patent

active

056604491

ABSTRACT:
A braking force control apparatus for use with an automotive vehicle supported on road wheels each of which has a wheel cylinder for applying a braking force to the corresponding road wheel in response to a fluid pressure introduced thereto. The fluid pressure is controlled by a solenoid valve which is movable between open and closed positions in response to a control signal having a variable duty ratio. The duty ratio of the control signal is changed at predetermined intervals of time to move the solenoid valve in a plurality of steps toward the closed position.

REFERENCES:
patent: 4898361 (1990-02-01), Bender et al.
patent: 5303988 (1994-04-01), Okubo
patent: 5328254 (1994-07-01), Youngblood
patent: 5462253 (1995-10-01), Asthana et al.
patent: 5571248 (1996-11-01), Seetharaman et al.

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