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U.S. Department of Energy
Office of Scientific and Technical Information

In-tank fuel reservoir with reservoir fuel level control

Patent ·
OSTI ID:5837277
A fuel delivery system is described for automobile engines and the like comprising: a canister for positioning within a fuel tank and having a lower end with an opening in communication with the fuel tank and an internal wall spaced from the lower end dividing the canister into upper and lower chambers, an electric fuel pump positioned within the canister having an inlet coupled to draw fuel solely from the lower chamber through the internal wall and an outlet for feeding fuel under pressure to an engine, means for returning excess fuel from the engine to the upper chamber, and means responsive to fuel level in the upper chamber for selectively feeding fuel the upper chamber to the lower chamber when fuel level in the upper chamber approaches maximum capacity of the upper chamber, the level responsive means consists of passage means in the internal wall and a float valve response to fuel level in the upper chamber for selectively blocking fuel flow through the passage means to the lower chamber.
Assignee:
Walbro Corp., Cass City, MI
Patent Number(s):
US 4831990
OSTI ID:
5837277
Country of Publication:
United States
Language:
English