Invention Grant
US08634939B2 Method and system for vehicle speed control 有权
车速控制方法与系统

Method and system for vehicle speed control
Abstract:
Methods are provided for controlling a vehicle speed during a downhill travel. Based on the estimated grade of the downhill travel and further based on an input received from the operator, different combinations of an engine braking torque and a regenerative braking torque are used to maintain the vehicle speed during the downhill travel. A battery rate of charging is also adjusted based on the duration or distance of the downhill travel, as indicated by the operator input.
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