Dynamic deceleration control for hybrid vehicle to achieve a consistent overrun response
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United States of America Patent
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Apr 3, 2018
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N/A
app pub date -
Aug 21, 2014
filing date -
Aug 21, 2013
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Abstract
A hybrid electric vehicle is capable of direct drive by internal combustion engine, electric motor, or both. In order to provide a consistent overrun response, a torque controller determines an appropriate deceleration characteristic according to, for example, transmission speed ratio, vehicle gradient and vehicle mass, and commands the electric motor and the engine to contribute a negative torque which meets the required deceleration characteristic. A ‘tip’ function modifies the characteristic in the event of a change commanded by the vehicle driver, for example a change of speed ratio.
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