摘要
本公司某款电动汽车在极高温环境下,长时间怠速时出现空调降温效果差,甚至出现压缩机停止运行的故障。经多次测试及CAN报文分析,确认故障原因为怠速工况下发动机舱的冷凝器散热不足。应用CFD软件对发动机舱的流场进行分析,确认问题所在。根据分析结果增加导风板、修改底板排气孔,再次运用CFD计算验证,确认减少了发动机舱的漏气、回流现象,提高了冷凝器的散热效果;最终实车测试验证提高了该环境下的空调降温效果及解决了压缩机停止运行的故障。
A certain electric vehicle of our company experiences poor air conditioning cooling effect and even compressor shutdown when idling for a long time in extremely high temperature environments.After multiple tests and analysis of CAN messages,it has been confirmed that the cause of the malfunction is insufficient heat dissipation from the condenser in the engine compartment under idle conditions.Apply CFD software to analyze the flow field in the engine compartment and identify the problem.According to the analysis results,an air guide plate was added and the exhaust holes on the bottom plate were modified.CFD calculations were used again to verify that the leakage and backflow phenomena in the engine compartment were reduced,and the heat dissipation effect of the condenser was improved;The final vehicle testing verified that the air conditioning cooling effect in this environment was improved and the fault of the compressor stopping operation was solved.
作者
林华
Lin Hua(Haima Automobile Co.,Ltd.,Hainan Haikou 570216)
出处
《内燃机与配件》
2025年第15期67-69,共3页
Internal Combustion Engine & Parts
关键词
电动汽车
发动舱流场
空调系统
Electric vehicle
Vehicle Engine cabin flow field
Air conditionin
