System for discriminating operating state of vehicle clutch mech

Details System for discriminating operating state of vehicle clutch mech System for discriminating operating state of vehicle clutch mech

1995-10-26

1998-02-24

Louis-Jacques, Jacques

Boots, shoes, and leggings

364424097, 364424034, 477176, 477906, 192 33, 192 331, 192103R, 74336R, G06G 770, B60K 4102, F16D 3300

Patent

active

057216827

ABSTRACT:
A system for discriminating operation state of a lockup clutch of a torque converter of a transmission of a vehicle, more particularly to a system for detection a lockup clutch failure. In the system, three discrimination areas are preestablished with respect to the throttle opening and vehicle speed and reference value are determined in response to a selected discrimination area. The converter slip ratio is compared with the data and when the ratio is out of a range determined by the data, the lockup clutch operation is discriminated to be not normal. At that time, however, when the area is in a weak-engaged region, the engaging force is forcibly increased and the discrimination is conducted once again, thereby making it possible to conduct failure detection in the slip-engaged region and enhancing detection accuracy.

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