Lockup control apparatus of torque converter

Details Lockup control apparatus of torque converter Lockup control apparatus of torque converter

1998-04-24

1999-08-10

Wright, Dirk

Interrelated power delivery controls, including engine control

Clutch control

With fluid drive

701 67, F16H 6114

Patent

active

059350431

ABSTRACT:
A lockup control apparatus of a torque converter for a vehicle comprises a coast condition detecting section for detecting coast running of a vehicle, a lockup clutch slip detecting section for detecting a target slip generated between the input and output elements of the torque converter and a slip start capacity storing section, and a coast lockup control section for detecting a lockup capacity. The slip start capacity storing section detects a slip start capacity by once decreasing the lockup capacity to the sum of a last stored slip start capacity and a preset capacity and stores the slip start capacity while updating it. During the coast running a coast lockup control section controls the lockup capacity at a minimum lockup engagement capacity which is the sum of the newest slip start capacity and a predetermined capacity.

REFERENCES:
patent: 5616099 (1997-04-01), Sakai
patent: 5620394 (1997-04-01), Iizuka
patent: 5667458 (1997-09-01), Narita et al.
patent: 5787379 (1998-07-01), Ochiai et al.

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