Fuel pump timing to reduce noise

Details Fuel pump timing to reduce noise Fuel pump timing to reduce noise

2009-07-29

2011-12-27

Moulis, Thomas N (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C123S500000, C123S509000

Reexamination Certificate

active

08082904

ABSTRACT:
One embodiment is a fuel system for an internal combustion engine including a fuel pump having a fuel pump gear operable to drive the fuel pump to pressurize fuel. The fuel pump gear is offset relative to engine top dead center by a predetermined angle to reduce a sound or noise. The offset can be determined by selecting the minimum sound produced over a range of offsets or operating conditions.

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