灰尘洞汽车防尘密封性试验合理性的探讨

简要分析了在一般沙土公路进行汽车防尘密封性试验时，车外左、右采样头的粉上 的弊病。阐明了汽车在灰尘洞进行防尘试验的合理性，并对以往的试验结果进行统计分析，介绍了灰尘洞的组成、构造及试验地烃比排放量小并通过试验验证了灰尘洞防尘试验的合理性。

Exploration to the Rationalizations of Vehicle Dust Proof Performance Test in the Dust Chamberv

Brief analysis is performed on the disadvantage of dust proof performance test on the general sand road. In this case, great difference exists between the dust qualities in the sampling heads mounted on the left and right side outside of the vehicles. The rationalization of dust proof performance test in dust chamber is described and confirmed by the test. The statistical analysis has been made on the test results before. The construction of the dust chamber and the test procedures are presented.