Automatic downshift and override control for a transmission

Details Automatic downshift and override control for a transmission Automatic downshift and override control for a transmission

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 39/04 (2006.01) F16D 31/00 (2006.01) F16H 61/40 (2006.01) F16H 61/42 (2006.01)

Patent

CA 2382620

The present invention includes a hydrostatic transmission system that has a control device that is selectable to send a speed signal to a motor for driving an output at a predetermined speed. A controller is used to automatically permit the selected speed signal in response to a predetermined speed signal and predetermined input from a sensing device indicating that the output is being driven in a forward drive condition. The controller is also used to automatically override the selected speed signal in response to a predetermined speed signal and predetermined input from a sensing device indicating that the output is being driven in a reverse drive condition. This invention allows for the speed of the motor to be changed from a high speed to a low speed when the motor is driving the output in a reverse drive condition to achieve greater efficiency and control of a work machine.

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