Hybrid electric vehicle controller and method of controlling a hybrid electric vehicle

摘要

Embodiments of the invention provide control means for a hybrid electric vehicle, the control means comprising an energy management portion (EMP) configured to determine a required torque split between each of a first and at least a second actuator in dependence on a first set of one or more vehicle parameters, the required torque split being an amount of torque required to be provided to drive the vehicle by each actuator, the control means being configured to provide an actuator request control output whereby each actuator is controlled to provide an amount of torque according to the required torque split, the control means further comprising a powertrain mode manager (PMM) portion, the PMM portion being arranged to override the control output of the EMP in dependence on a value of a second set of one or more vehicle parameters.

主权项

1. A controller for a parallel-type hybrid electric vehicle comprising:
an energy management portion (EMP) configured to determine a required torque split between each of a first actuator and a second actuator in dependence on a value of a first set of one or more vehicle parameters, wherein the first actuator comprises an engine and the second actuator comprises an electric machine, and wherein the first and second actuators are each operable to deliver torque to a driveline of the vehicle, the controller being configured to provide an actuator request control output whereby each actuator is controlled to provide an amount of torque according to the required torque split, the controller further comprising a powertrain mode manager (PMM) portion, and the PMM portion being arranged to override a control output of the EMP thereby to cause the first actuator to rotate when disconnected from the driveline of the vehicle in dependence on a value of a second set of one or more vehicle parameters, wherein, in a first control mode, the controller controls the first actuator and the second actuator to drive the vehicle, wherein the controller controls a speed of rotation of the first actuator to substantially match a speed of rotation of the second actuator prior to connecting the first actuator to the driveline, and wherein, in a second control mode, the controller is configured to control a speed of rotation of the first actuator to vary with a speed of the vehicle when the first actuator is running and disconnected from the driveline of the vehicle such that a sound generated by the first actuator varies according to vehicle speed and creates a perception that the first actuator is connected to the driveline and driving the vehicle.