Engine oil pump for use as e.g. engine oil exhaust pump for internal combustion engine of motor car, has pump housing and bearing for supporting pump housing that are connected to each other in floating manner

摘要

The pump has a pump housing (10) and a bearing (11-14) for supporting pump housing and has thermal expansion coefficient that is different from thermal expansion coefficient of pump housing. The pump housing and bearing are connected to each other in floating manner. The pump housing is connected with bearing by plug connection. The pump housing has a case for generating pressure gradient, working chambers (17-19) and a partition (15,16) arranged between working chambers. The pump housing is designed as plastic component, and bearing is designed as aluminum component.