Belt slip diagnostic system for accessory and hybrid...

Details Belt slip diagnostic system for accessory and hybrid... Belt slip diagnostic system for accessory and hybrid...

2011-07-05

2011-07-05

Hellner, Mark (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

C701S022000, C123S339150

Reexamination Certificate

active

07974749

ABSTRACT:
A diagnostic system for a vehicle includes a first sensor that generates a first status signal, which is indicative of an engine speed of an engine. A second sensor generates a second status signal that is indicative of an actual accessory speed of an accessory. The accessory is coupled to the engine via a belt system. A control module determines an expected accessory speed based on the engine speed and determines a residual accessory speed based on the expected and actual accessory speeds. The control module also detects a fault in the belt system based on the residual accessory speed.

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patent: 2005/0263121 (2005-12-01), Tamagawa et al.
patent: 2006/0287146 (2006-12-01), McVicar et al.

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