Pump operation control apparatus for hydraulic brake boosting sy

Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal

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30312212, 303 10, B06T 844

Patent

active

061355771

ABSTRACT:
In a pump operation control apparatus for a hydraulic brake boosting system, an ECU 13 is provided with a timer 16 to which an output signal from a brake switch 12 is supplied and a pump-operation-control-signal generating means 17 for transmitting a signal for operating and controlling a motor 9 in response to an output signal from the timer 16. When the brake switch 12 has been switched on, the operation of the pump is started. After predetermined time T has elapsed from a moment at which the brake switch 12 has been switched on, the operation of the pump is interrupted. If the brake switch 12 is continuously switched on after the predetermined time T has elapsed, the pump is operated for time elongated from the predetermined time T until the brake switch 12 is switched off. If the brake switch 12 is again switched on before the predetermined time T elapses, the pump is operated until the predetermined time T elapses from the moment at which the brake switch 12 has again been switched on.

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patent: 5791745 (1998-08-01), Sakakibara
patent: 5797663 (1998-08-01), Kawaguchi et al.
patent: 5951116 (1999-09-01), Nagasaka et al.

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