汽车空调管路振动异响分析与试验研究Analysis and Experimental Research on the Vibration and Abnormal Sound of Automobile Air Conditioning Pipes
陈江艳;杨诚;贺岩松;
摘要(Abstract):
针对某汽车空调管路振动异响问题,运用主观评价、横向对比、频谱分析等方法对故障车进行诊断,并基于实车空调系统台架模拟及脉动数据分析确定了"水击"是导致管路振动异响的原因,然后通过对膨胀阀、管路等关键零部件的有限元仿真分析进一步确定该振动异响产生机理。最后,根据"源-路径-响应"的NVH控制方法逐一分析拟定改进措施,并利用实车验证确认了其有效性。研究结果表明,加大膨胀阀内摩力和在管路中增加扩张消声器可有效控制"水击"导致的汽车空调管路振动异响问题。
关键词(KeyWords): 汽车空调系统;管路振动;异响;水击
基金项目(Foundation):
作者(Authors): 陈江艳;杨诚;贺岩松;
DOI: 10.19620/j.cnki.1000-3703.20190894
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