Self-learning control system for plug-in hybrid vehicles

Details Self-learning control system for plug-in hybrid vehicles Self-learning control system for plug-in hybrid vehicles

2008-06-12

2010-12-14

Phan, Hau V (Department: 3618)

Motor vehicles

Power

Electric

C180S065275, C180S065265, C701S022000

Reexamination Certificate

active

07849944

ABSTRACT:
A system is provided to instruct a plug-in hybrid electric vehicle how optimally to use electric propulsion from a rechargeable energy storage device to reach an electric recharging station, while maintaining as high a state of charge (SOC) as desired along the route prior to arriving at the recharging station at a minimum SOC. The system can include the step of calculating a straight-line distance and/or actual distance between an orientation point and the determined instant present location to determine when to initiate optimally a charge depleting phase. The system can limit extended driving on a deeply discharged rechargeable energy storage device and reduce the number of deep discharge cycles for the rechargeable energy storage device, thereby improving the effective lifetime of the rechargeable energy storage device. This “Just-in-Time strategy can be initiated automatically without operator input to accommodate the unsophisticated operator and without needing a navigation system/GPS input.

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