Fuel pressure sensing apparatus for internal combustion...

Details Fuel pressure sensing apparatus for internal combustion... Fuel pressure sensing apparatus for internal combustion...

2006-03-21

2006-03-21

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

Reexamination Certificate

active

07013720

ABSTRACT:
A fuel pressure sensing apparatus for an internal combustion engine control unit is capable of compensating for deterioration in the detection accuracy of a fuel pressure sensor (16) caused by a sensor offset. The fuel pressure sensor (116) detects the pressure of compressed fuel in a fuel rail (113) to be supplied by an injector (115) to a combustion chamber defined in each cylinder of the internal combustion engine. A sensor characteristic learning part in the form of an ECU (117) performs learning correction by calculating a learned correction value to correct an output value of the fuel pressure sensor (116) when the engine or a feed pump (102) is stopped.

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