Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1995-11-30
1998-01-06
Ballato, Josie
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
91376R, 91 32, 3031143, B60T 858
Patent
active
057046948
ABSTRACT:
A traction control device includes a vacuum booster connected to a master cylinder. The master cylinder is in fluid communication with a driven wheel brake and a non-driven wheel brake via respective first and second solenoid valves. When the brake traction control initiation condition is established, the booster is activated to supply fluid pressure from the master cylinder to the driven wheel brake and the non-driven wheel brake. After elapse of a time from the activation of the booster, the second solenoid valve is closed to prevent a further increase of the brake fluid pressure in the non-driven wheel brake. Thereafter, the brake fluid pressure in the driven wheel brake is adjusted by controlling the first solenoid valve as well as by controlling a fluid pressure pump which is associated with the fluid communication between the master cylinder and the driven wheel brake.
REFERENCES:
patent: 4453450 (1984-06-01), Horsting
patent: 4979426 (1990-12-01), Schiel et al.
patent: 5098170 (1992-03-01), Watanabe
patent: 5188435 (1993-02-01), Willmann
patent: 5357846 (1994-10-01), Rudolph et al.
patent: 5586814 (1996-12-01), Steiner
Aisin Seiki Kabushiki Kaisha
Ballato Josie
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