Reducing torque converter clutch activity in an automatic transm

Details Reducing torque converter clutch activity in an automatic transm Reducing torque converter clutch activity in an automatic transm

1998-06-04

1999-09-28

Marmor, Charles A.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

701 67, F16D 3300

Patent

active

059572558

ABSTRACT:
A method for determining whether the torque converter bypass clutch of an automotive transmission should be relocked or a relock should be prevented includes maintaining in a delay counter the number of such relocks that occur, continuously determining in a counter decrement timer the length of the period since the last relock occurred, determining the output of a timer for decrementing the count of the delay counter, decrementing the count of the delay counter and clearing the counter decrement timer provided the period of the counter decrement timer is greater than the output of the timer for decrementing the count of the delay counter.

REFERENCES:
patent: 4380048 (1983-04-01), Kishi et al.
patent: 4744031 (1988-05-01), Takeda et al.
patent: 5186294 (1993-02-01), Nitz et al.
patent: 5678667 (1997-10-01), Kono et al.
patent: 5835876 (1998-11-01), Hathaway et al.
patent: 5857162 (1999-01-01), Vukovich et al.

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