The invention provides a front and rear wheel driving force distribution device and a control device thereof, which can simply and accurately distribute driving force to a front wheel and a rear wheel. A front and rear wheel driving force distribution device is provided with: a central differential unit that distributes and outputs rotational torque input from a transmission to a front propeller shaft and a rear propeller shaft; and a differential restriction unit provided with a first clutch and a second clutch, the rear transmission shaft being configured such that, when the second clutch is engaged by the second piston, the rear transmission shaft rotates in a faster state than when the first clutch is engaged by the first piston, and the rear transmission shaft rotates in a faster state than when the first clutch is engaged by the first piston. When the rotational speed of the first clutch is equal to or higher than the rotational speed of the rear propeller shaft, a one-way clutch provided between the first clutch and the rear propeller shaft connects the first clutch and the rear propeller shaft, and when the rotational speed of the first clutch is lower than the rotational speed of the rear propeller shaft, the one-way clutch idles.
本发明提供一种能够简便且准确地进行向前轮和后轮的驱动力分配的前后轮驱动力分配装置及其控制装置。前后轮驱动力分配装置具备:中央差动部,其将从变速器输入的旋转扭矩分配并输出到前侧的传动轴和后侧的传动轴;以及差动限制部,其具备第一离合器和第二离合器,后侧的传动轴构成为,如果通过第二活塞将第二离合器接合,则该后侧的传动轴以与通过第一活塞将第一离合器接合的情况相比增速了的状态旋转,在第一离合器的转速与后侧的传动轴的转速相同或比后侧的传动轴的转速高的情况下,设置于第一离合器与后侧的传动轴之间的单向离合器将它们连接,在第一离合器的转速比后侧的传动轴的转速低的情况下单向离合器空转。
Front and rear wheel driving force distribution device and control device therefor
前后轮驱动力分配装置及其控制装置
2023-09-08
Patent
Electronic Resource
Chinese
IPC: | 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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|FRONT/REAR DRIVE FORCE DISTRIBUTION DEVICE OF ALL WHEEL DRIVE VEHICLE
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