Solenoid diagnostic systems for cylinder deactivation control

Details Solenoid diagnostic systems for cylinder deactivation control Solenoid diagnostic systems for cylinder deactivation control

2011-03-22

2011-03-22

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Testing of an individual engine part

Reexamination Certificate

active

07908913

ABSTRACT:
A solenoid diagnostic system includes a pressure monitoring module that determines a first pressure in an intake cam phaser for an intake camshaft and a second pressure in an exhaust cam phaser for an exhaust camshaft associated with a cylinder. A fuel injection monitoring module determines a fuel injection status associated with the cylinder. A fault determination module diagnoses a fault in a solenoid associated with the cylinder based on the first pressure, the second pressure, and the fuel injection status.

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