METHOD AND APPARATUS TO CONTROL CLUTCH PRESSURES IN AN ELECTRO-MECHANICAL TRANSMISSION
First Claim
1. Method for reducing occurrence of clutch slip in electro-mechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch, said method comprising:
- monitoring operation of said clutch;
identifying an indication of clutch wear based upon said monitoring said operation; and
increasing a minimum clamping force applied to said clutch based upon said indication of clutch wear.
17 Assignments
0 Petitions
Accused Products
Abstract
A method for reducing occurrence of clutch slip in electromechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch includes monitoring operation of said clutch, identifying an indication of clutch wear based upon said monitoring said operation, and increasing a minimum clamping force applied to said clutch based upon said indication of clutch wear.
-
Citations
17 Claims
-
1. Method for reducing occurrence of clutch slip in electro-mechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch, said method comprising:
-
monitoring operation of said clutch; identifying an indication of clutch wear based upon said monitoring said operation; and increasing a minimum clamping force applied to said clutch based upon said indication of clutch wear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. Method for controlling hydraulic line pressure in electromechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch, the method comprising:
-
monitoring slip speed in said clutch; identifying a significant clutch slip event based upon said monitoring said slip speed; and maintaining an increased minimum offset hydraulic line pressure based upon said identifying said significant clutch slip event. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. Apparatus for reducing occurrence of clutch slip in an electro-mechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch, said apparatus comprising:
-
said clutch including means to monitor clutch slip; an electrically-powered auxiliary hydraulic pump; an auxiliary hydraulic pump control module; and an offset pressure module providing input to said auxiliary hydraulic pump control module, wherein said offset pressure module is programmed with logic comprising a monitoring of said clutch slip, an indication of a significant clutch slip event based upon said monitoring, and a modulation of a hydraulic line pressure comprising an increased minimum hydraulic line pressure based upon said indication of said significant clutch slip event. - View Dependent Claims (17)
-
Specification