The invention provides a method for predicting and testing a failure mode of a differential with a lock of an electric four-wheel drive. The mode that the differential with the lock may fail due to the fact that the electric four-wheel drive has a specific driving working condition on a high-adhesion road surface is predicted and tested. The method for predicting the failure mode of the differential mechanism with the lock of the electric four-wheel drive comprises the following steps: judging whether the driving working condition of the electric four-wheel drive is a first preset driving working condition or a second preset driving working condition; if the driving condition is the first preset driving condition, detecting a vehicle longitudinal rotation angle beta, a vehicle yaw velocity omega, a vehicle longitudinal speed u and an inner side wheel rotation speed omega respectively, and predicting a failure mode of the differential with the lock based on the detected data; and if the driving condition is a second preset driving condition, detecting a vehicle longitudinal turning angle beta, a vehicle yaw velocity omega, a vehicle longitudinal speed u, an inner side wheel rotating speed omega inner and an outer side wheel rotating speed omega outer respectively, and predicting a failure mode of the differential with the lock based on the detected data.
本发明提供了一种预测及测试电动四驱车的带锁差速器失效模式的方法,因电动四驱车在高附着路面上出现特定行车工况而导致带锁差速器可能失效的模式进行预测及测试。该预测电动四驱车的带锁差速器失效模式的方法,包括:判断电动四驱车的行车工况是否为第一预设行车工况或第二预设行车工况;若为第一预设行车工况,则对整车纵向转角β、整车横摆角速度ω、整车纵向车速u、内侧车轮转速ω内分别进行检测,并基于检测到的数据进行带锁差速器失效模式预测;若为第二预设行车工况,则对整车纵向转角β、整车横摆角速度ω、整车纵向车速u、内侧车轮转速ω内及外侧车轮转速ω外分别进行检测,并基于检测到的数据进行带锁差速器失效模式预测。
Method for predicting and testing failure mode of differential mechanism with lock of electric four-wheel drive
一种预测及测试电动四驱车的带锁差速器失效模式的方法
2023-12-05
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 / 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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