The invention provides a driving force control device capable of obtaining excellent operation performance while maintaining excellent traction performance. A driving force control device determines a front and rear wheel drive distribution, which is the ratio of the driving force of the front wheels to the driving force of the rear wheels in a four-wheel drive vehicle, and calculates an obtained positive or negative standard driving acceleration on the basis of the input quantity from a driving force instruction device of the vehicle and the vehicle speed. On the basis of the standard drive acceleration, dynamic load ratio distribution control in which the front and rear wheel drive distribution is determined in accordance with a dynamic load ratio distribution curve, which is a curve of a dynamic load ratio applied to the front and rear wheels with respect to the standard drive acceleration, and rear wheel distribution control in which the front and rear wheel drive distribution is determined in accordance with a dynamic load ratio distribution curve, which is a curve of a dynamic load ratio applied to the front and rear wheels with respect to the standard drive acceleration, are switched. In the rear wheel distribution control, the front and rear wheel drive distribution is determined in accordance with a rear wheel distribution curve that increases the rear wheel drive distribution than the dynamic load ratio distribution curve.
本发明提供一种在维持优异的牵引性能的同时也可获得优异的操作性能的驱动力控制装置。一种驱动力控制装置,决定四轮驱动车辆中的前轮与后轮的驱动力的比率即前后轮驱动分配,所述驱动力控制装置根据来自所述车辆的驱动力指示装置的输入量以及车辆速度,计算所获得的正或负的规范驱动加速度,基于所述规范驱动加速度,切换实施动载荷比分配控制以及靠后轮分配控制,所述动载荷比分配控制中,按照施加至前轮以及后轮的动载荷比相对于所述规范驱动加速度的曲线即动载荷比分配曲线来决定所述前后轮驱动分配,所述靠后轮分配控制中,按照比所述动载荷比分配曲线更提高了后轮驱动分配的靠后轮分配曲线来决定所述前后轮驱动分配。
Driving force control device for four-wheel drive vehicle
四轮驱动车辆的驱动力控制装置
2025-06-17
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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