Direct injected fuel pump diagnostic systems and methods

Details Direct injected fuel pump diagnostic systems and methods Direct injected fuel pump diagnostic systems and methods

2009-04-10

2010-11-09

Moulis, Thomas N (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C123S090150

Reexamination Certificate

active

07827968

ABSTRACT:
An engine control system comprises a camshaft, a cam phaser module, a pressure sensor, and an engine control module. The camshaft is operably coupled to a crankshaft of an engine. Rotation of the camshaft operates a fuel pump in driving communication with a cam of the camshaft. The cam phaser module provides hydraulic pressure to change a rotational position of the cam about the camshaft. The pressure sensor determines a cam phaser pressure signal based on a pressure of fluid in the cam phaser module. The engine control module diagnoses a condition of the fuel pump based on the cam phaser pressure signal.

REFERENCES:
patent: 5586526 (1996-12-01), Lindquist
patent: 5899181 (1999-05-01), Kurata et al.
patent: 5983863 (1999-11-01), Cavanagh et al.
patent: 7246583 (2007-07-01), Cinpinski et al.
patent: 7698935 (2010-04-01), Dibble et al.
patent: 7743749 (2010-06-01), Suchecki et al.
patent: 2005/0193995 (2005-09-01), Nomura
patent: 2010/0154526 (2010-06-01), Cinpinski et al.

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