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 59/14 (2006.01) F16H 61/14 (2006.01) F16H 61/684 (2006.01)

Patent

CA 2327879

A system for controlling an automatic transmission of a vehicle, wherein a pressure to be supplied to the hydraulic clutch of a target gear is determined based on a desired value of acceleration of gravity acting in the longitudinal direction of the vehicle and other parameters including an engine torque, thereby decreasing the shift shock effectively, while ensuring to finish the shift within an expected period of time. Moreover, the engine torque is estimated using a parameter indicative of inertia torque used for raising the engine speed. With this, it becomes possible to determine the engine torque inputted to the transmission, thereby decreasing the shift shock more effectively.

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