Hydraulic pump unit e.g. for vehicle brake system, has hydraulic pump driven by electric motor, and separating element in bore crossing region to prevent entry of leakage fluid from leakage bore into contact bore

摘要

The hydraulic pump unit has a hydraulic pump driven by an electric motor with a motor contact through a contact bore (44) in the pump housing and a leakage bore (48) crossing the contact bore. A separating element (50) is arranged in the bore crossing region to prevent the entry of leakage fluid from the leakage bore into the contact bore.