Pressure valve for adjusting pre-defined leakage in hydraulic arrangement of motor car, has valve housing, and membrane element elastically deformed with increasing differential pressure in flow passage to increase flow resistance of valve

摘要

The valve (44) has a valve housing (48) surrounding a flow passage (50) to conduct hydraulic medium, and a diaphragm unit (52) arranged in the passage and comprising diaphragm apertures (54a, 54b). A membrane element (56) has a membrane aperture (58), and elastically deformed based on differential pressure in the passage to adjust leakage of a hydraulic arrangement. The flow of the medium through the valve is enabled by the apertures in output condition of the element, where the element is deformed with increasing differential pressure in the passage to increase flow resistance of the valve. An independent claim is also included for a hydraulic arrangement for a motor car.