Method for controlling a wheel brake pressure in a hydraulic vehicle braking system

摘要

A method for controlling the wheel brake pressures in wheel brake cylinders in a hydraulic vehicle braking system proposes to connect the wheel brake cylinders via wheel valves to a piston pump, the pistons of which are double-action pistons, and the two piston sides are connectable by means of pump valves. In order to increase the wheel brake pressure, the wheel valves are opened during a delivery stroke of the piston pump and the pump valves are closed, and the wheel valves are closed and the pump valves opened during a suction stroke. In order to reduce the wheel brake pressures, the valves are controlled in reverse.

主权项

1. A method for controlling a wheel brake pressure in a wheel brake cylinder of a hydraulic vehicle braking system, the vehicle braking system having at least one wheel brake cylinder, a piston pump with at least one double acting piston which is driven during the controlling of the wheel brake pressure, a pump valve connecting a first chamber of the piston pump defined at least in part by a first side of the at least one double-acting piston to a second chamber of the piston pump defined at least in part by a second side of the at least one double-acting piston, and a wheel valve via which the at least one wheel brake cylinder is connected to the piston pump, the method comprising:
opening the wheel valve during a delivery stroke of the piston pump and closing the wheel valve during a suction stroke of the piston pump in order to increase the wheel brake pressure during wheel brake pressure control operations.