Combine harvester rotor speed control and control method

Details Combine harvester rotor speed control and control method Combine harvester rotor speed control and control method

A - Human Necessities

01

D

A01D 75/00 (2006.01) A01D 41/127 (2006.01) A01F 12/56 (2006.01)

Patent

CA 2247761

The combine harvester has a threshing and separating rotor with a threshing cylinder section that cooperates with a concave to thresh crop material. A hydraulic motor drives the rotor. A hydraulic pump, driven by an internal combustion engine, supplies hydraulic fluid to tile hydraulic motor to drive the rotor. An electronic controller receives a rotor speed measurement from a speed sensor and compares the rotor speed with a selected threshing and separating rotor speed selected by an operator of the harvester and stored in the electronic controller. When the rotor speed varies from the selected rotor speed, the electronic controller sends a signal to a displacement control to change the threshing and separating rotor speed to approach the selected rotor speed. The displacement control can reverse the flow of hydraulic fluid to the hydraulic motor to reverse the direction of rotor rotation.

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