Pressure supply device of servo brake systems

摘要

For a servo brake system a device is proposed for generating and maintaining an excess pressure or a negative pressure in a working accumulator equipped with a non-return valve, which device is characterised by a vane pump, a diaphragm pump, a pressure sensor and an electronic control. The device has the advantage that the specific advantages of the two types of pump can be optimally combined with one another with a view to the lowest possible energy demand. <IMAGE>