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Hydraulic brake system with slip control

  • US 5,620,241 A
  • Filed: 11/09/1994
  • Issued: 04/15/1997
  • Est. Priority Date: 05/09/1992
  • Status: Expired due to Fees
First Claim
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1. A hydraulic brake system with slip control, including a pedal-operable master cylinder, to which a front-wheel brake and a rear-wheel brake of an automotive vehicle are connected at least through a main pressure line, including a hydraulic auxiliary-pressure pump which is connected to an auxiliary-pressure line and takes in pressure medium from a reservoir and supplies it to the wheel brakes, and including wheel speed sensors and a controlling and regulating electronic unit to determine the wheel rotational behavior and to generate electric braking pressure control signals, said brake system further including pressure modulation valves, including at least one inlet valve and at least two outlet valves, connected to the wheel brakes to control the braking pressure, characterized in that a pressure-medium displacing element is connected to the main pressure line which leads to the rear-wheel brake, the pressure of the auxiliary-pressure pump being adapted to be applied to a first end surface of the pressure-medium displacing element, wherein said first end surface is in selective fluid communication with said front-wheel brake, and in that the pressure prevailing in the rear-wheel brake is adapted to be applied to a second end surface which is arranged opposite to the first end surface,, wherein said pressure-medium displacing element undergoes a stroke to displace a pressure from said front wheel-brake toward said rear-wheel brake.

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