| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve regeneration efficiency when using an electric motor as a power generator in deceleration, in a hybrid vehicle. <P>SOLUTION: Closing timing IVC of an intake valve is gradually delayed after the intake bottom dead center until t2 by a variable valve timing mechanism VTC of an engine simultaneously with a start t1 of deceleration regeneration by depressing a brake, a rotation speed N of the motor is increased according to a reduction change of an effective compression ratio thereby, and power generation torque Tg is reduced, so that an energy loss rate of the motor is reduced to increase the regeneration efficiency. <P>COPYRIGHT: (C)2009,JPO&INPIT |
