The invention provides a method for calibrating a pure electric driving mode gear shifting point of a hybrid electric vehicle. The method comprises the following steps: obtaining a three-dimensional correspondence table of an outer gear ring rotating speed, an outer gear ring torque and a system efficiency and a three-dimensional correspondence table of the outer gear ring rotating speed, the outer gear ring torque and a first brake locking torque in an EV-1 driving mode according to a calibration method of a gear shifting point of the EV-1 driving mode; obtaining a three-dimensional corresponding table of the outer gear ring torque, the outer gear ring rotating speed and the system efficiency in an EV-2 driving mode according to a calibration method of a gear shifting point of the EV-2 driving mode; and obtaining a three-dimensional correspondence table of the outer gear ring rotating speed, the outer gear ring torque and the system efficiency and a three-dimensional correspondence table of the outer gear ring rotating speed, the outer gear ring torque and the rotating speed of a first planet carrier in an EV-3 driving mode according to a calibration method of a gear shifting point of the EV-3 driving mode. The method is simple and feasible, the optimal power system efficiency of the operating condition of the hybrid electric vehicle is ensured, and the efficiency loss is reduced.
本发明提供了一种混合动力汽车纯电动驱动模式换档点标定的方法,根据EV‑1驱动模式换档点的标定方法获得EV‑1驱动模式下的外齿圈转速、外齿圈扭矩与系统效率的三维对应表和外齿圈转速、外齿圈扭矩与第一制动器锁止扭矩的三维对应表,根据EV‑2驱动模式换档点的标定方法获得EV‑2驱动模式下的外齿圈扭矩、外齿圈转速与系统效率的三维对应表,根据EV‑3驱动模式换档点的标定方法获得EV‑3驱动模式下的外齿圈转速、外齿圈扭矩与系统效率的三维对应表和外齿圈转速、外齿圈扭矩与第一行星架转速的三维对应表。本发明方法简单可行,确保混合动力汽车所运行工况的动力系统效率最优,减少效率损失。
Method for calibrating pure electric driving mode gear shifting point of hybrid electric vehicle
混合动力汽车纯电动驱动模式换档点标定的方法
2020-07-24
Patent
Elektronische Ressource
Chinesisch
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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