Fuel pump for a motor vehicle

Details Fuel pump for a motor vehicle Fuel pump for a motor vehicle

1994-06-29

1995-02-28

Bertsch, Richard A.

Pumps

Combined

417203, 41742312, 418260, F04B 3900

Patent

active

053932064

ABSTRACT:
A motor vehicle fuel pump including a tubular steel housing and a roller vane positive displacement pump and an electric motor in the tubular steel housing. The roller vane pump includes a pair of flat side plates, a rotor between the side plates, and a T-shaped sleeve bearing in a plain bore in one of the side plates. A lip at one end of a tubular body of the sleeve bearing has a side defining an annular seat in a plane perpendicular to the tubular body. The tubular body has a shaft bore therethrough and a stepped outer wall including a large diameter part adjacent the annular seat and a small diameter part adjacent the large diameter part. The large diameter part is force fitted in the plain bore until the annular seat engages flush against a flat, outside surface of the side plate. The annular seat positions the longitudinal centerline of the tubular body perpendicular to the outer side plate for optimum alignment with the armature shaft when an end of the latter is disposed in the shaft bore. The pump rotor is rotatably supported on the small diameter part of the sleeve bearing which protrudes beyond the outer side plate.

REFERENCES:
patent: 4445820 (1984-05-01), Hayashi et al.
patent: 4449891 (1984-05-01), Kemmner
patent: 4672937 (1987-06-01), Fales et al.
patent: 4801252 (1989-10-01), Wrobel
patent: 5013222 (1991-05-01), Sokol et al.
patent: 5173037 (1992-12-01), Martin et al.

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