摘要 |
<P>PROBLEM TO BE SOLVED: To provide a four-wheel drive vehicle capable of preventing the hunting of a two-way clutch in traveling in a four-wheel drive mode when the two-way clutch is employed as a switch clutch for switching two-wheel drive and four-wheel drive. <P>SOLUTION: The four-wheel drive vehicle includes: the switch clutch 43 that can switch a four-wheel driving state and a two-wheel driving state; and intermittent clutches 7, 8 that can transmit and interrupt power between rear wheels 10L, 10R and a rear drive gear 6. The switch clutch 43 includes an inner wheel connected to an output member 41, an outer wheel connected to a transferring gear 42, a roller 46 provided between the inner wheel and the outer wheel, and a retainer retaining the roller 46. When a rotational speed of the inner wheel is higher than that of the outer wheel, the switch clutch is switched into the four-wheel drive state by the engagement of the roller 46 with a wedge. In the four-wheel driving, the intermittent clutches 7, 8 are switched into a transmission state, and the rotational speed of the inner wheel is set to be higher than that of the outer wheel so that the switch clutch 43 is kept into the four-wheel driving state. <P>COPYRIGHT: (C)2013,JPO&INPIT |