METHOD AND APPARATUS TO PRIORITIZE TRANSMISSION OUTPUT TORQUE AND INPUT ACCELERATION FOR A HYBRID POWERTRAIN SYSTEM
First Claim
1. Method for controlling a powertrain comprising an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member, the method comprising:
- operating said transmission in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through said transmission;
monitoring commands affecting a requested output torque;
monitoring a calculated output torque; and
prioritizing between an input acceleration of said transmission and an output torque of said transmission based upon whether said operating said transmission in said operating range state is in transient operation or stable operation.
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Accused Products
Abstract
A powertrain includes an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member. A method for controlling the powertrain includes operating the transmission in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through the transmission. The method further includes monitoring commands affecting a requested output torque, monitoring a calculated output torque, and prioritizing between an input acceleration of the transmission and an output torque of the transmission based upon whether operating the transmission in the operating range state is in transient operation or stable operation.
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Citations
20 Claims
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1. Method for controlling a powertrain comprising an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member, the method comprising:
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operating said transmission in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through said transmission; monitoring commands affecting a requested output torque; monitoring a calculated output torque; and prioritizing between an input acceleration of said transmission and an output torque of said transmission based upon whether said operating said transmission in said operating range state is in transient operation or stable operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Method for controlling a powertrain comprising an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member, the method comprising:
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operating said transmission in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through said transmission; monitoring commands affecting a requested output torque; monitoring a calculated output torque; when said operating range state includes transient operation, prioritizing an input acceleration of said transmission over an output torque of said transmission based upon said requested output torque, said calculated output torque, and a zero torque; and when said operating range state includes stable operation, prioritizing said output torque of said transmission over said input acceleration of said transmission based upon said requested output torque and said calculated output torque.
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15. Apparatus for controlling a powertrain comprising an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member, the apparatus comprising:
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said transmission including a gear configuration operating in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through said transmission; and a shift execution module, including programming to monitor commands affecting a requested output torque, monitor a calculated output torque, when said operating range state includes transient operation, prioritize an input acceleration of said transmission over an output torque of said transmission based upon said requested output torque, said calculated output torque, and a zero torque, and when said operating range state includes stable operation, prioritize said output torque of said transmission over said input acceleration of said transmission based upon said requested output torque and said calculated output torque. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification