Vacuum pump, particularly for diesel engines.

摘要

A pump whose housing defines a working cavity with an inlet port and an outlet port, and a movable pump assembly rotating within said cavity for transporting fluid from said inlet port to said outlet port.
<??>According to this invention, the housing (12) includes a movable wall element (84) which, in response to a predeter mined pressure differential between the inlet and outlet ports, moves from a first position in which it seals the working cavity to a second position in which it creates a bypass chamber connecting the inlet and outlet ports.
<??>For use particularly as vacuum pump in diesel engines for automotive vehicles.