Intelligent coast-down algorithm for electric vehicle
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United States of America Patent
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Apr 2, 2002
Grant Date -
N/A
app pub date -
Apr 1, 1999
filing date -
Apr 1, 1999
priority date (Note) -
In Force
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Importance
Abstract
A method and apparatus are provided for applying a coast-down braking torque to a vehicle coasting. The system provides a controlled regenerative braking torque automatically applied when the vehicle is coasting to simulate the feeling of a vehicle having an internal combustion engine. When the driver lets off the throttle when a vehicle is either on a flat grade or driving down a hill, the amount of regenerative braking is automatically controlled. When utilized with an electric or hybrid electric vehicle, the coast-down braking torque is converted to stored electric energy which improves the efficiency of the vehicle.
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