Method of operating a hybrid electric vehicle to reduce...

Details Method of operating a hybrid electric vehicle to reduce... Method of operating a hybrid electric vehicle to reduce...

2005-02-15

2005-02-15

Waks, Joseph (Department: 2834)

Prime-mover dynamo plants

Electric control

Engine control

C060S274000, C180S065230

Reexamination Certificate

active

06856034

ABSTRACT:
A method of operating a hybrid electric vehicle10to reduce emissions. The method utilizes the vehicle's electric motor/generator12to generate a negative torque during cold-start conditions, effective to increase the load on the internal combustion engine16, thereby reducing the light-off time of the catalytic converter28. The method also reduces emissions by utilizing the vehicle's motor/generator12to provide a supplemental torque to engine16during transient events, thereby reducing the generated mass flow and amount of untreated emissions.

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