Patent ID: 6227627
Filing Date: 2001-05-08
Classification: B60T

Abstract:
A hydraulic automotive brake system with wheel slip control, comprising:a pressure medium source onto which a main pressure line is connected, which leads to a wheel brake,a pressure relief line including first and second pressure relief line segments, wherein said first and second relief line segments connect the wheel brake to a supply reservoir,a pressure modulation valve coupled to said main pressure line that either separates the supply reservoir from the wheel brake or connects it to the wheel brake,a control orifice valve arranged in the main pressure line upstream of the pressure relief line, actuated by a change in the hydraulic pressure,a pressure chamber and first and second check valves, wherein said first check valve separates the pressure chamber from a connection of the main pressure line, and wherein the second check valve is disposed within the first segment of the pressure relief line, wherein said first segment of said pressure relief line extends from said pressure chamber to said main pressure linea final control element guided in a sealed manner in the pressure chamber, wherein in a first direction of actuation of the control orifice valve the final control element is exposed exclusively to the pressure of the pressure medium source, and a second direction of actuation the final control element is exposed to the pressure change in the pressure chamber after the pressure modulation valve has been opened.