Belt slip diagnostic system for accesory and hybrid electric drives

Belt slip diagnostic system for accesory and hybrid electric drives

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 engin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TALJONICK MICHAEL J, DOBIES CHRISTOPHER J, ZETTEL ANDREW M, VAN GILDER JOHN F, SCHROEDER RICK H
Format: Patent
Sprache:eng
Schlagworte:
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung: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.