Shift control system for automatic transmission

Details Shift control system for automatic transmission Shift control system for automatic transmission

2007-05-22

2007-05-22

Le, David D. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Control by sensed ambient condition, pattern indicia,...

C477S117000, C477S151000, C477S156000, C701S056000

Reexamination Certificate

active

11078417

ABSTRACT:
A shift control system for an automatic transmission. The shift control system includes an oil temperature sensor, a hydraulic controller to operate a hydraulic clutch, and a control unit in operative communication with the oil temperature sensor and the hydraulic controller. When a gear shift is requested just after an engine restart, the control unit controls the hydraulic clutch with an adjusted shift control process, in contrast to a normal condition of the engine. This adjustment is determined based on a first oil temperature at a time point when the engine is last stopped and on a temperature difference between the first oil temperature and a second oil temperature at a time point when the engine is last restarted after the last engine stop.

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patent: 6915681 (2005-07-01), Kaigawa et al.
patent: 8-166058 (1996-06-01), None

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