Electric machine shift and engine start coordination
AssigneeFca US LLC
InventorsNadirsh D Patel, Cristian Rostiti, Allwyn D Bhakare, Paolo Olivieri
Life of this patent
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Abstract
A hybrid electric vehicle (HEV) includes an internal combustion engine, an electric traction motor, a motor/generator configured to start the internal combustion engine, a transmission, and a powertrain control system including a controller having one or more processors. The controller is programmed to monitor the transmission for a gear shift while the HEV operates in an EV mode where the electric traction motor provides propulsion for the HEV, detect a driver torque request during the gear shift, and turn the internal combustion engine on to provide torque to the HEV during the gear shift.
Claims18
A hybrid electric vehicle (HEV), comprising:
- an internal combustion engine;
- an electric traction motor;
- a motor/generator configured to start the internal combustion engine;
- a transmission;
- and
- a powertrain control system including a controller having one or more processors, the controller programmed to:
- monitor the transmission for a gear shift while the HEV operates in an EV mode where the electric traction motor provides propulsion for the HEV;
- detect a driver torque request during the gear shift;
- and
- in response, turn the internal combustion engine on to provide torque to the HEV to satisfy the driver torque request during the gear shift.
A method of operating a hybrid electric vehicle (HEV) having an internal combustion engine, an electric traction motor, a motor/generator, and a transmission, the method comprising:
- monitoring, by a controller having one or more processors, the transmission for a gear shift while the HEV operates in an EV mode where the electric traction motor provides propulsion for the HEV;
- detecting, by the controller, a driver torque request during the gear shift;
- and
- in response, turning the internal combustion engine on, by the controller, to provide torque to the HEV to satisfy the driver torque request during the gear shift.
Dependencies are inferred from the claim text.