Method for controlling a hybrid drivetrain

Details Method for controlling a hybrid drivetrain Method for controlling a hybrid drivetrain

2009-06-03

2011-11-22

Phan, Hau (Department: 3618)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C477S006000

Reexamination Certificate

active

08062173

ABSTRACT:
A method for controlling a hybrid drivetrain of a motor vehicle such that, during a thrust operation of the vehicle, a change takes place from a combustion-powered driving mode, in which the combustion engine is in a thrust operation, the separator clutch is engaged and the electric machine contributes no force, or from a combined driving mode in which the engine is in a thrust operation, the clutch is engaged and the electric machine operates as a generator, to an electric driving mode in which the engine is switched off, the clutch is disengaged and the electric machine operates as a generator. To efficiently change driving modes, the clutch is partially disengaged to a slip limit; the clutch is then completely disengaged; and when the clutch reaches the slip limit, the generator torque of the electric machine is increased inversely to the torque that can be transmitted by the clutch.

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