The invention discloses an oil tank leakage diagnosis method, a system and an automobile. The oil tank leakage diagnosis system comprises an oil tank assembly and a vehicle control unit. The oil tankassembly comprises a plurality of oil tanks connected in series; the method is executed by a vehicle control unit and comprises the steps that the reference liquid level of the oil tank assembly and first leakage pressure corresponding to the reference liquid level are obtained; the current liquid level of each oil tank is obtained, and second leakage pressure of the oil tank assembly is determined; carrying out negative pressure equalization processing on the oil tank assembly; and comparing the actual pressure of the oil tank assembly with the second leakage pressure to obtain an oil tank leakage diagnosis result of the oil tank assembly. The problems that an existing diagnosis method is not suitable for multi-oil-tank leakage diagnosis, and reliability of a diagnosis result is affectedby fuel volatilization are solved.
本发明公开了一种油箱泄漏诊断方法及其系统及汽车,所述方法用于油箱泄漏诊断系统,所述油箱泄漏诊断系统包括油箱组件和整车控制器,所述油箱组件包括多个串联连接的油箱;所述方法由整车控制器执行,包括:获取所述油箱组件的参考液位和所述参考液位对应的第一泄漏压力;获取每个所述油箱的当前液位,确定所述油箱组件的第二泄漏压力;对所述油箱组件进行负压均衡处理;将所述油箱组件的所述实际压力与所述第二泄漏压力进行比较,得到所述油箱组件的油箱泄漏诊断结果。本发明解决了现有诊断方法不适用于多油箱泄漏诊断,且燃油挥发影响诊断结果可靠性的问题。
Oil tank leakage diagnosis method, system and automobile
一种油箱泄漏诊断方法及其系统及汽车
2020-06-26
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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