Pumps – Motor driven – Electric or magnetic motor
Patent
1993-12-07
1996-01-30
Bertsch, Richard A.
Pumps
Motor driven
Electric or magnetic motor
415 72, F03B 312
Patent
active
054876508
ABSTRACT:
A fuel pump has a motor mounted within a housing with a shaft extending therefrom to which a helically shaped impeller is fitted having at least two turns for pumping fuel from a fuel tank to an automotive engine. The impeller has an involute shaped leading edge designed to efficiently scoop fuel from an inlet into a pumping chamber formed between the helically shaped blade turns comprising the impeller. A trailing edge on the impeller has a narrowed width which increases the effective flow cross-sectional area, thus increasing the fuel pressure. The helically shaped impeller needs no separate casing, as is typically required for conventional fuel pumps employing regenerative turbines, gerotors, roller vanes, or the like, and increases fuel pressure over a longer circumferential distance thus decreasing cavitation.
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Gaston Robert D.
Yu Dequan
Bertsch Richard A.
Ford Motor Company
Kelley David B.
Kurytnyk Peter G.
May Roger L.
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