A driving-force distribution device is provided that can supply lubricant to an above-positioned pinion gear among a pair of pinion gears even when rotation of a differential case of a differential mechanism stops in a two-wheel-drive mode of a four-wheel-drive vehicle. A driving-force distribution device mounted on a four-wheel-drive vehicle includes a differential mechanism and a clutch mechanism. The differential mechanism includes a differential case, a pinion shaft, a pair of pinion gears, and a pair of side gears. In the pinion shaft, a flow passage is formed through which a lubricant is allowed to flow from the below-positioned pinion gear among the pair of pinion gears toward the above-positioned pinion gear in the two-wheel-drive mode in which the pair of pinion gears rotate in opposite directions with the differential case not rotating. The lubricant is supplied to the flow passage by rotation of the below-positioned pinion gear.


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    Title :

    Driving-force distribution device


    Contributors:

    Publication date :

    2019-06-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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