Patent Number: 7,103,463

Title: Hydraulic clutch state diagnostic and control

Abstract: Clutch engagement is preferably determined in accordance with monitored pressure conditions within a clutch control chamber. Clutch slip is monitored and information respecting clutch engagement inferred therefrom is stored for subsequent retrieval and use in a redundant slip based clutch engagement determination. Clutch slip is also monitored for information respecting clutch disengagement for use in a redundant slip based clutch disengagement determination.

Inventors: Sah; Jy-Jen F. (West Bloomfield, MI), Steinmetz; Todd M. (Indianapolis, IN)

Assignee: General Motors Corporation

International Classification: G06F 17/00 (20060101)

Expiration Date: 9/05/02018