整车排放连续稀释模态测试延迟时间的测定及分析

Determination and Analysis of Delay in Vehicle Emission Continuous Dilution Modal Test

在汽车排放模态测试中 ,采样管路的延迟时间是影响测试结果的重要因素。本文根据连续稀释采样模态测试的结果 ,分析了延迟时间产生的原因、稀释模态测试中延迟时间随工况变化的规律以及通过试验数据确定延迟时间的方法。

In vehicle emission modal test, sample line delay is an important element that can affect the test result very much. In this paper, based on continuous dilution modal test data, it is analyzed that the reason for the delay and the regularity of the delay in response to the vehicle operating mode. And the way to determine the delay is introduced in this article also.