Device for detecting operation of brake pedal

Details Device for detecting operation of brake pedal Device for detecting operation of brake pedal

1998-05-22

1999-09-14

Schwartz, Chris

Fluid-pressure and analogous brake systems

Speed-controlled

Braking pressure demand or braking force desire

3031151, 303DIG2, 303DIG3, B60T 842

Patent

active

059511214

ABSTRACT:
A device for detecting operation of a brake pedal comprises: a first hydraulic chamber 9 in which fluid is pressurized by a first piston 7 connected with a brake pedal 1 when the brake pedal 1 is pushed downward; a second hydraulic chamber 13 communicated with the first hydraulic chamber 9 via an orifice 11 of small diameter; a first hydraulic pressure sensor 19 for detecting hydraulic pressure in the first hydraulic chamber; and a second hydraulic pressure sensor 20 for detecting hydraulic pressure in the second hydraulic chamber. The control unit 24 controls a motor (braking device) 22 in accordance with a difference .increment.P in pressure obtained by the values of detection conducted by the first hydraulic pressure sensor 19 and the second hydraulic pressure sensor 20.

REFERENCES:
patent: 3969898 (1976-07-01), Fulmer et al.
patent: 4526003 (1985-07-01), Leiber
patent: 4798422 (1989-01-01), Becker
patent: 5567021 (1996-10-01), Gaillard
patent: 5758930 (1998-06-01), Schiel et al.

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