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US 10,272,907 B2Granted
System and method for fast engine starts with belt integrated starter generator assist during locking of disconnect clutch
AssigneeFord Global Technologies, LLC
InventorsRajit Johri, Mark Steven Yamazaki, Fazal Urrahman Syed
Life of this patent
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Abstract
A controller is configured to respond to an engine start command, operate the engine to produce excess torque beyond a demand torque, and in response to engine speed achieving a threshold, operate the starter-generator to load the engine to consume the excess torque and drive the engine speed toward an electric machine speed, and engage a clutch to couple the engine and an electric machine.
Claims8
A method of controlling a vehicle engine and starter-generator comprising:
- in response to receiving a start command, increasing an engine torque above a demand torque to generate excess torque;
- in response to engine speed achieving a threshold, applying a load to the engine by decreasing a starter-generator torque to consume the excess torque;
- and
- engaging a disconnect clutch to connect the engine with a driveline of the vehicle immediately after applying the load.
1 more element
Dependencies are inferred from the claim text.