CONTROL OF ENGINE START FOR A HYBRID SYSTEM
First Claim
1. Method to control a flying engine start in a powertrain comprising an electric motor providing a propulsion torque to a transmission input shaft, an internal combustion engine, and an engine disconnect clutch selectively providing torque transfer between the engine and the motor, the method comprising:
- monitoring an output torque request;
determining the propulsion torque to the transmission input shaft based upon the output torque request;
determining a compensation torque to be provided to the engine disconnect clutch for the flying engine start; and
controlling the motor to provide a motor torque based upon a sum of the propulsion torque and the compensation torque.
3 Assignments
0 Petitions
Accused Products
Abstract
A powertrain includes an electric motor providing propulsion torque to a transmission input shaft, an internal combustion engine, and an engine disconnect clutch selectively providing torque transfer between the engine and the motor. A method to control a flying engine start in the powertrain includes monitoring an output torque request, determining the propulsion torque to the transmission input shaft based upon the output torque request, determining a compensation torque to be provided to the engine disconnect clutch for the flying engine start, and controlling the motor to provide a motor torque based upon a sum of the propulsion torque and the compensation torque.
107 Citations
20 Claims
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1. Method to control a flying engine start in a powertrain comprising an electric motor providing a propulsion torque to a transmission input shaft, an internal combustion engine, and an engine disconnect clutch selectively providing torque transfer between the engine and the motor, the method comprising:
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monitoring an output torque request; determining the propulsion torque to the transmission input shaft based upon the output torque request; determining a compensation torque to be provided to the engine disconnect clutch for the flying engine start; and controlling the motor to provide a motor torque based upon a sum of the propulsion torque and the compensation torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. System to control a flying engine start in a powertrain comprising an electric motor providing a propulsion torque to a transmission input shaft of a transmission, an internal combustion engine, and an engine disconnect clutch selectively providing torque transfer between the engine and the motor, the system comprising:
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the motor; and a control module; monitoring an output torque request; determining the propulsion torque to the transmission input shaft based upon the output torque request; determining a compensation torque to be provided to the engine disconnect clutch for the flying engine start; and controlling the motor to provide a motor torque based upon a sum of the propulsion torque and the compensation torque.
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Specification