| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve fuel economy while securing drivability when transferring to hydraulic braking from cooperative control, in an electric motor vehicle capable of performing brake cooperative control. <P>SOLUTION: A first reference valueαof a vehicle speed for reducing a regenerative braking force and a second reference valueβof a vehicle speed for stopping the regenerative braking force are variably set so as to be reduced according to an increase in an absolute value of deceleration calculated by a reduction quantity of the vehicle speed VS. Reduction in a sharing rate of the regenerative braking force is started based on a comparison between first and second reference values and the vehicle speed, and the generation of the regenerative braking force is stopped. Thus, when the absolute value of the deceleration is small, while securing drivability by reducing a sense of incongruity to a vehicle occupant, and when the absolute valve of the deceleration is large, the fuel economy can be improved by performing regenerative braking up to a low vehicle speed area. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
