Control system for automatic vehicle transmissions

Details Control system for automatic vehicle transmissions Control system for automatic vehicle transmissions

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 61/26 (2006.01) F16H 61/06 (2006.01) F16H 59/42 (2006.01) F16H 61/00 (2006.01)

Patent

CA 2327861

A system for controlling an automatic transmission of a vehicle, in which a pressure supply time to complete removal of the clutch-stroke play is determined based on the input shaft rotational speed. And a residual oil amount in the clutch is estimated and the time is corrected by the residual oil amount. The preparatory pressure to be supplied within the time is also determined based on the input shaft rotational speed and the ATF temperature. With this, it becomes possible to effect the clutch-stroke play removal within a less variant time and with a good response, thereby decreasing the shift shock effectively so as to improve the feeling of the vehicle occupant.

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