Slip control apparatus for torque converter

Details Slip control apparatus for torque converter Slip control apparatus for torque converter

1998-09-04

2000-10-17

Marmor, Charles A

Interrelated power delivery controls, including engine control

Clutch control

With fluid drive

477176, B60K 4102

Patent

active

061323365

ABSTRACT:
A slip control apparatus for a torque converter with a lockup clutch controls a slip rotation speed between input and output elements of the torque converter so as to be set at a slip rotation speed command value through the control of an engagement condition of the lockup clutch. The slip control apparatus comprises a target converter torque calculating section which calculates a target converter torque for achieving the slip rotation speed command value on the basis of a characteristic of the torque converter. A target engagement capacity calculating section calculates a target engagement capacity of the lockup clutch by subtracting the target converter torque from an output torque of the engine. The lockup clutch engagement force controlling section controls an engagement force of the lockup clutch so as to adjust a lockup clutch engagement capacity of the lockup clutch at the target lockup clutch engagement capacity. This linear compensated control improves an accuracy of the torque converter slip control.

REFERENCES:
patent: 5074166 (1991-12-01), Yamashita et al.
patent: 5439428 (1995-08-01), Slicker
patent: 5674155 (1997-10-01), Otto et al.
patent: 5679099 (1997-10-01), Kato et al.
patent: 5719768 (1998-02-01), Tashiro et al.
patent: 5743828 (1998-04-01), Kuriyama et al.

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