System and method for boosting torque output of a drive train

Details System and method for boosting torque output of a drive train System and method for boosting torque output of a drive train

2011-05-24

2011-05-24

Hellner, Mark (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Electric vehicle

C701S051000, C701S054000, C701S055000, C701S103000, C477S003000, C475S150000, C180S065100, C180S065235, C123S564000, C123S090150

Reexamination Certificate

active

07949442

ABSTRACT:
A method and system for boosting a torque output of a drive train comprises an engine speed detector for detecting an engine speed of an engine having a baseline torque versus engine speed curve. A data processor determines if the detected engine speed is within a first range of engine speeds, if the detected engine speed is within the first range, the electric motor is activated to rotate substantially synchronously with the engine speed within the first range in an electric propulsion mode in accordance with a supplemental torque versus engine speed curve. The supplemental torque versus engine speed curve intercepts the baseline torque versus engine speed curve at a lower engine speed point and a higher engine speed point.

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