EV mode shift strategy for hybrid vehicle
First Claim
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1. A vehicle comprising:
- a transmission configured to receive power from an engine and a motor, and to shift between gears based on a shift schedule; and
a controller programmed to, responsive to only the motor providing power to the transmission, adjust the shift schedule to narrow an operating speed range of the motor relative to when the engine and motor provide power to the transmission to maintain a peak range of available motor power output.
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Abstract
A vehicle includes and an engine, a motor, a transmission, and a controller. The transmission is configured is to receive power from the engine and the motor. The transmission is also configured to shift between gears based on a shift schedule. The controller is programmed to, in response to only the motor providing power to the transmission, adjust the shift schedule to narrow an operating speed range of the motor such that the motor speed maintains a peak range of an available motor power output.
60 Citations
20 Claims
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1. A vehicle comprising:
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a transmission configured to receive power from an engine and a motor, and to shift between gears based on a shift schedule; and a controller programmed to, responsive to only the motor providing power to the transmission, adjust the shift schedule to narrow an operating speed range of the motor relative to when the engine and motor provide power to the transmission to maintain a peak range of available motor power output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle comprising:
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an engine; a motor; a battery configured to power the motor; a transmission configured to receive power from the engine and motor and to shift between gears; and a controller programmed to, in response to a demanded power output of the motor not exceeding an available power output of the motor while the motor alone is providing power to the transmission, maintain a current gear of the transmission, and in response to a demanded power of the motor exceeding an available power output of the motor while the motor alone is providing power to the transmission, shift the transmission to increase the available power output, wherein the available power output corresponds to a difference between a maximum power output of the motor and a power reserve required to start the engine. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A vehicle comprising:
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an engine configured to provide power to a transmission during a hybrid mode of operation and not during an EV mode of operation; a motor configured to provide power to the transmission during the hybrid mode of operation and the EV mode of operation; and a controller programmed to, in response to a transition from the hybrid mode to the EV mode, adjust a transmission shift schedule to narrow an operating speed range of the motor such that the motor speed maintains a peak range of an available motor power output. - View Dependent Claims (18, 19, 20)
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Specification