| 摘要 |
PURPOSE:To enhance the driving maneuverability of a saddle riding type vehicle by operating a differential limiting clutch by the discharge oil pressure of a pump which is driven in response to the relative rotation of two transmission parts so that the differential limiting function is developed when the relative number or revolutions exceed a prescribed value. CONSTITUTION:A differential limiting clutch 15 is arranged between a differential case 10 as a relatively rotatable transmission part on one side and a side gear 12r as a transmission part on the other side. In this differential limiting clutch 15, a thrust piston 18 which is energized by a spring 26 in such direction as a friction engaging condition is released is provided. On the other hand, a gear pump 28 which is driven by the relative rotation of both transmission parts 10 and 12r is provided. And it is so arranged that the gear pump 28 exerts the discharge oil pressure on the thrust piston 18 via a control mechanism when the relative number of revolutions exceeds a prescribed value so as to bring the differential limiting clutch 15 into a friction engaging condition.
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