Electric motor-pump assembly
AssigneeITT Automotive Europe GmbH
InventorsJochen Burgdorf, Peter Volz, Hans-Dieter Reinartz, Dieter Dinkel
Life of this patent
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Abstract
An assembly, consisting of a motor and a pump, the motor being arranged in a motor housing and the pump in a pump housing. Both housings can be coupled to each other. The motor housing is provided with a second main bearing. The pump housing is equipped with a pump bearing. During normal operation, the forces acting on the pump eccentric are essentially supported by the main bearing and the pump bearing. The bearing forces are introduced into the pump housing. If the motor housing is not fastened to the pump housing, the rotor shaft is supported by the main bearing and, if necessary, an accessory bearing. Thus the motor can be tested without being connected to the pump housing.
Claims27
An electric motor-pump assembly including an electric motor having a motor housing including a bearing plate retaining a main bearing, the assembly also including a pump housing with an abutment surface into which a bore with first, second, and third steps terminates, the first step of which is adjacent to the abutment surface and accommodates the main bearing and supports it radially, said pump housing including bores which accommodate pump pistons and terminate into the second step, the third step accommodating a pump bearing and supporting said pump bearing radially, the electric motor including a rotor supported by the main and the pump bearing, the rotor including an eccentric for driving the pump pistons,
- wherein the motor housing and the pump housing are coupled in such a way that the bearing plate abuts the abutment surface of the pump housing.
Dependencies are inferred from the claim text.