Two-step oil control valve diagnostic systems

Details Two-step oil control valve diagnostic systems Two-step oil control valve diagnostic systems

2011-04-12

2011-04-12

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Testing of an individual engine part

C073S114770

Reexamination Certificate

active

07921710

ABSTRACT:
A diagnostic system includes a first pressure monitoring module, a second pressure monitoring module, and a fault determination module. The first pressure monitoring module determines low-lift pressures and high-lift pressures in a cam phaser when a first oil control valve (OCV) moves first valve lifters to the low-lift state and the high-lift state, respectively. The second pressure monitoring module determines low-lift pressures and high-lift pressures in the cam phaser when a second OCV moves second valve lifters to the low-lift state and the high-lift state, respectively. The fault determination module diagnoses a fault in one of the first OCV and the second OCV based the low-lift pressures and the high-lift pressures.

REFERENCES:
patent: 5937806 (1999-08-01), Lyko et al.
patent: 7063057 (2006-06-01), Waters et al.
patent: 7077082 (2006-07-01), Bloms et al.
patent: 7246583 (2007-07-01), Cinpinski et al.
patent: 7698935 (2010-04-01), Dibble et al.
patent: 7712441 (2010-05-01), Cinpinski et al.
patent: 7827968 (2010-11-01), Cinpinski et al.
patent: 2003/0213445 (2003-11-01), Bloms et al.
patent: 2007/0068474 (2007-03-01), Cinpinski et al.
patent: 2009/0132146 (2009-05-01), Dibble et al.
patent: 2009/0143963 (2009-06-01), Hendriksma
patent: 2009/0145384 (2009-06-01), Cinpinski et al.
patent: 2009/0222196 (2009-09-01), Cinpinski et al.
patent: 2010/0154526 (2010-06-01), Cinpinski et al.
patent: 2010/0269575 (2010-10-01), Cinpinski et al.

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