Aggregate for feeding fuel from supply tank to internal combusti

Details Aggregate for feeding fuel from supply tank to internal combusti Aggregate for feeding fuel from supply tank to internal combusti

1993-09-23

1994-11-15

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418171, 415 551, F04C 210, F04C 1500, F03B 1104

Patent

active

053642465

ABSTRACT:
An aggregate for feeding fuel from a supply tank to an internal combustion engine of a motor vehicle has a feeding pump having two end walls forming a pump chamber with a suction opening and a pressure opening and a feed element rotatable in the pump chamber so as to supply fuel from the suction opening to the pressure opening. At least one of the end walls is provided with a groove-shaped unloading passage in a region between an end surface of the feeding element and a sealing surface of the one end wall and communicating through a further opening the pump chamber with a low pressure region. The suction opening has an end facing in a rotary direction of the feeding element. The unloading passage is located near the end of the suction opening.

REFERENCES:
patent: 3242867 (1966-03-01), Mosbacher
patent: 3551079 (1970-12-01), Brundage

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