发明名称 |
Direct injected fuel pump diagnostic systems and methods |
摘要 |
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.
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申请公布号 |
US7827968(B2) |
申请公布日期 |
2010.11.09 |
申请号 |
US20090421865 |
申请日期 |
2009.04.10 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
CINPINSKI KENNETH J.;DIBBLE DONOVAN L. |
分类号 |
F02M37/04;F01L1/34 |
主分类号 |
F02M37/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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