| 摘要 |
PROBLEM TO BE SOLVED: To make the distribution of the drive power outputted from the front and rear axles of a four-wheel drive hybrid vehicle to be variable. SOLUTION: A four-wheel drive hybrid vehicle is constituted in such a way that part of the drive power outputted from an engine 150 is transmitted to a front axle 116 via a clutch motor, and the remainder is regenerated as electric power. The regenerated electric power is used for driving a motor which is coupled with a rear axle. In the hybrid vehicle, a speed change gear is interposed between the clutch motor and front axle 116. The speed change gear is constituted of a planetary gear 210 to which a ring gear 212 is fixed and a clutch 222. The front axle 116 is coupled with a sun gear 211, and the rotating shaft of the clutch motor is selectively coupled with a planetary carrier 213 or the sun gear 211, depending upon the switching a clutch 222. The rotating shaft is coupled with the carrier 213, while the vehicle runs normally and with the sun gear 211 while the vehicle is accelerated. Because of this means, the distribution of the drive power outputted from the front axle 116 can be made larger while the vehicle is accelerated. |
