Hybrid vehicle and associated output torque control method
AssigneeFord Global Technologies, LLC
InventorsQing Wang, Ming Lang Kuang, Fazal Urrahman Syed, Ryan Abraham McGee, Kenneth Frederick
Life of this patent
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Abstract
A hybrid vehicle and method of control are disclosed. An internal combustion engine and at least one traction motor are operated such that the combined output torque corresponds to one of a plurality of output torque functions, each output torque function having a distinct output torque at a maximum value of accelerator pedal position for an associated vehicle speed. The output torque function is selected based on a virtual gear number. The virtual gear number varies in response to driver activation of shift selectors or automatically in response to changes in vehicle speed.
Claims14
A method of controlling a hybrid electric vehicle having a driver operated accelerator pedal, an engine, and at least one traction motor, comprising:
- operating the engine and at least one traction motor such that combined output torque corresponds to one of a plurality of output torque functions, wherein the combined output torque is different for each output torque function at a maximum value of accelerator pedal position for an associated vehicle speed.
A controller for a hybrid electric vehicle, comprising:
- input communication channels that receive a vehicle speed, a position of a driver operated accelerator pedal, and signals associated with operation of a downshift selector;
- output communication channels that deliver signals to control an engine and at least one traction motor;
- and
- control logic configured to operate the engine and at least one traction motor such that combined output torque corresponds to one of a plurality of output torque functions, each output torque function producing a different output torque at a maximum value of accelerator pedal position for an associated vehicle speed.
A vehicle comprising:
- a transmission driveably connected to an engine, a first traction motor, and vehicle wheels;
- a second traction motor driveably connected to the vehicle wheels;
- and
- a controller programmed to operate the engine and the traction motors such that combined output torque corresponds to one of a plurality of output torque functions each function producing a different output torque at a maximum value of accelerator pedal position for an associated vehicle speed.
Dependencies are inferred from the claim text.