Fuel pump for a fuel system of an internal combustion engine

Details Fuel pump for a fuel system of an internal combustion engine Fuel pump for a fuel system of an internal combustion engine

2008-08-06

2010-02-02

Moulis, Thomas N (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S467000, C417S540000, C138S030000

Reexamination Certificate

active

07654249

ABSTRACT:
The invention relates to a fuel pump for a fuel system of an internal combustion engine, having a housing and a housing cap joined to the housing. In order to create a fuel pump which in its operation generates little airborne sound, structure-borne sound (vibration amplitudes) and pulsations in a low-pressure region of the fuel pump, it is proposed that the housing cap has at least one damping element, which is embodied as a sandwich construction having at least a first cover layer, a second cover layer, and a damping connection layer disposed between them. The damping connection layer has a markedly higher elasticity and/or higher material damping than the two cover layers, which may be constructed of sheet metal or the housing cap itself.

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