System and method for synchronizing engine and transmission system operation within an agricultural vehicle
AssigneeCNH Industrial America LLC
InventorsJustin Ringwald, Rex LeRoy Ruppert
Life of this patent
Estimating the term…
Abstract
A system and method for controlling a transmission system is provided. One agricultural vehicle includes a vehicle controller configured to instruct an engine controller to maintain an engine at a constant speed and to receive a first signal from a transmission controller indicative of gear shift initiation. The vehicle controller is also configured to instruct the engine controller to maintain the engine at a current torque upon receipt of the first signal and to receive a second signal from the transmission controller indicative of gear shift completion. The vehicle controller is configured to instruct the engine controller to maintain the engine at the constant speed upon receipt of the second signal.
Claims14
An agricultural vehicle comprising:
- a vehicle controller that during operation instructs an engine controller to maintain an engine at a constant speed, receives a first signal from a transmission controller indicative of gear shift initiation, instructs the engine controller to maintain the engine at a current torque upon receipt of the first signal, receives a second signal from the transmission controller indicative of gear shift completion, and instructs the engine controller to maintain the engine at the constant speed upon receipt of the second signal.
A vehicle comprising:
- a transmission system that changes gear ratios during operation;
- a transmission controller communicatively coupled to the transmission system, wherein the transmission controller controls operation of the transmission system during operation;
- an engine coupled to the transmission system, wherein the engine transfers torque to the transmission system during operation;
- an engine controller communicatively coupled to the engine, wherein the engine controller controls the operation of the engine during operation;
- and
- a vehicle controller communicatively coupled to the transmission controller and to the engine controller, wherein the vehicle controller during operation instructs the engine controller to maintain the engine at a constant speed, receives a first signal from the transmission controller indicative of gear shift initiation, instructs the engine controller to maintain the engine at a current torque upon receipt of the first signal, receives a second signal from the transmission controller indicative of gear shift completion, and instructs the engine controller to maintain the engine at the constant speed upon receipt of the second signal.
Dependencies are inferred from the claim text.