Combined Engine and Hybrid Power System Load Control

摘要

A work vehicle including an engine, configured to supply power for driving a ground engaging traction device, and a hybrid power system to drive a powertrain. An engine controller is operatively coupled to the engine and is configured to generate a hybrid torque command received by a hybrid powertrain controller operatively coupled to the engine controller. The hybrid powertrain controller is configured to generate an available hybrid torque signal and a desired hybrid torque signal both of which are configured to be received by the engine controller. The engine controller generates an engine command signal configured to command the engine to operate at a commanded engine torque, in response to the available hybrid torque signal and the desired hybrid torque signal.

主权项

1. A control system for a work vehicle hybrid power system to drive a powertrain, the hybrid power system including an internal combustion engine, a reversible shaft power conversion machine, and an energy storage device, the control system comprising:
an engine controller, operatively coupled to the engine and configured to generate a bi-directional torque command signal indicative of the amount of bi-directional torque to be generated or absorbed by the reversible shaft power conversion machine; a hybrid powertrain controller, operatively coupled to the engine controller and to the powertrain to control the reversible shaft power conversion machine and manage the energy storage level of the energy storage device, the hybrid powertrain controller configured to generate an available torque signal and to generate a desired torque signal, both of which are received by the engine controller, wherein the engine controller generates an,engine command signal configured to command the engine and the reversible shaft power conversion machine to operate at a commanded torque in response to the available torque signal and the desired torque signal from the hybrid powertrain controller.