Torque converter lockup control

Details Torque converter lockup control Torque converter lockup control

1999-04-22

2000-03-28

Estremsky, Sherry L.

Interrelated power delivery controls, including engine control

Clutch control

Engine controlled by clutch control

477174, B60K 4102

Patent

active

060425075

ABSTRACT:
A control for providing a smooth, high quality torque converter lockup event in an automated mechanical transmission system (10) including a fuel-controlled engine (12) and a mechanical transmission (14) drivingly coupled by a torque converter and torque converter lockup clutch assembly (16). To achieve smooth torque converter lockup, engine torque is smoothly ramped down to a relatively low value and maintained at that value until the torque converter lockup clutch is effectively engaged.

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patent: 5562571 (1996-10-01), Maruyama et al.
patent: 5853350 (1998-12-01), Hasegawa et al.

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