Engine with fuel injection system

Internal-combustion engines – Charge forming device – Fuel injection system

Reexamination Certificate

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Details

C123S456000, C123S494000

Reexamination Certificate

active

06912996

ABSTRACT:
An engine incorporates a fuel injector to supply fuel to a combustion chamber defined in an engine body. At least one fuel rail defines a fuel passage through which fuel is supplied to the fuel injector. The fuel rail is mounted to the engine body. A fuel pump pressurizes the fuel. A sensor unit is elastically mounted to the fuel rail. The sensor unit has a fuel pressure sensor that detects a pressure of the fuel pressurized by the fuel pump. The engine body has bosses that project therefrom. The engine body defines bolt holes that extend through the bosses and into the engine body adjacent to the bosses. A threaded section is formed in each bolt hole in the engine body adjacent to the corresponding boss. A bolt is screwed down into each threaded section. A portion of each bolt is spaced apart from an inner surface of a corresponding bolt hole to reduce the effects of thermal expansion of the engine body and the fuel rail.

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