The invention provides a wheel end driving torque determination method and device and a vehicle. According to the method, whether the output rotating speed of a turbine of the hydraulic torque converter is zero or not is judged, and when the output rotating speed of the turbine of the hydraulic torque converter is zero, the wheel end driving torque is determined according to the speed ratio of a gearbox, the speed ratio of a drive axle, the total transmission efficiency, the characteristic coefficient of the hydraulic torque converter, the idling rotating speed of an engine and the torque conversion ratio of the hydraulic torque converter; when the turbine output rotating speed of the hydraulic torque converter is not equal to zero, the wheel end driving torque is determined according to the speed ratio of a gearbox, the speed ratio of a drive axle, the total transmission efficiency, the flywheel end torque of an engine and the torque conversion ratio of the hydraulic torque converter, so that different wheel end driving torque determining modes are adopted based on different turbine output rotating speed conditions of the hydraulic torque converter, and the output rotating speed of the hydraulic torque converter is determined. Therefore, the accuracy of the wheel end driving torque is improved, and the accuracy of vehicle control is improved.
本发明提供一种轮端驱动扭矩确定方法、装置和车辆。所述方法通过判断液力变矩器涡轮输出转速是否为零,并在液力变矩器涡轮输出转速为零时,根据变速箱的速比、驱动桥的速比、传动总效率、液力变矩器特性系数、发动机怠速转速和液力变矩器变矩比,确定轮端驱动扭矩,在液力变矩器涡轮输出转速不等于零时,根据变速箱的速比、驱动桥的速比、传动总效率、发动机飞轮端扭矩和液力变矩器变矩比,确定轮端驱动扭矩,这样,基于不同的液力变矩器涡轮输出转速情况,采用不同的轮端驱动扭矩确定方式,以提高轮端驱动扭矩精度,从而便于提高车辆控制的精度。
Wheel end driving torque determination method and device and vehicle
轮端驱动扭矩确定方法、装置和车辆
2022-07-01
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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