Methods and systems to identify cam phaser hardware degradation

Details Methods and systems to identify cam phaser hardware degradation Methods and systems to identify cam phaser hardware degradation

2011-04-05

2011-04-05

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

07918130

ABSTRACT:
A cam phaser diagnostic system is provided. The system includes: a first sample variance module that computes a first variance based on a desired cam phaser position. A second sample variance module computes a second variance based on a measured cam phaser position. An evaluation module diagnoses faulty cam phaser operation based on the first variance and the second variance.

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