Deere + Company

Steffen Frassek

Stefan Raisch

Matthias Lang

Helmut Schaefer

Guenter Rheinheimer

Helmut Schäfer

David Suess

Günter Rheinheimer

A transmission control circuit for controlling a system pressure provided by a pressure pump in a transmission. The circuit includes a pressure control valve and an electronic control unit. Load states and operating states of the working machine can be detected by the control unit and transmission input torque limits associated with the load states and state values representing at least one first operating state and state values representing at least one second operating state are stored therein. The first operating state corresponds with the maximum system pressure and the second operating state corresponds with a reduced system pressure compared to the maximum system pressure. The circuit includes a pressure limiting valve activated by the control unit to overrule the pressure control valve in order to variably set the reduced system pressure.

Transmission control circuit

Growing community of inventors

Mannheim, Germany

Steffen Frassek