Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1991-08-09
1993-09-28
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031154, 36442602, B60T 834
Patent
active
052481905
ABSTRACT:
A hydraulic braking pressure control system for a vehicle comprises a master cylinder (M) operatively connected to a brake pedal (P), an operation-amount detector (S) for detecting the amount by which the brake pedal is operated, a hydraulic pressure control unit (2.sub.FL etc.) for controlling the hydraulic pressure to be applied to a brake device (B.sub.FL etc.) mounted on a wheel in accordance with an applied quantity of electricity, and a control circuit (3) for controlling the quantity of electricity to be applied to the hydraulic pressure control unit, in accordance with a detection value provided by the operation-amount detector. The system further includes a cut-off valve (30.sub.FL etc.) adapted to be closed in response to depression of the brake pedal, and a reservoir (R.sub.2) connected through the cut-off valve to an oil passage (27) connecting the hydraulic pressure control unit and the brake device. The cut-off valve is opened when the brake pedal is not depressed, and even if a hydraulic pressure is delivered from the hydraulic pressure control unit when there is no braking operation, such hydraulic pressure can be released into the reservoir, ensuring that any such hydraulic pressure is prevented from being applied to the brake device.
REFERENCES:
patent: 4365847 (1982-12-01), Martin
patent: 4753490 (1988-06-01), Belart et al.
patent: 4950028 (1990-08-01), Harrison
patent: 4957330 (1990-09-01), Morikawa et al.
patent: 4971400 (1990-11-01), Jonner
Hagiwara Koichi
Horiuchi Makoto
Inagaki Hiromi
Saito Wataru
Sakurai Kazuya
Honda Giken Kogyo Kabushiki Kaisha
Oberleitner Robert J.
Young Lee W.
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