密闭室法测定汽车蒸发污染排放物试验结果的计算

Calculation of Vehicle Vaporized Pollution Emission Test Results Measured with the Closed Room Method

指出在使用可变容积密闭室法进行汽车蒸发污染排放及相关试验时,由于标准中所提供的计算公式存在明显缺陷而使计算结果产生一定的偏差。根据热力学定律及试验设备的工作原理对计算公式进行了推导,并进行了24h密闭室丙烷喷射试验,试验结果与实际情况完全相符。

It is presented that obvious defects in the calculation equations given in the standard result in calcula-tion errors when vehicle vaporization pollution emission tests and other relative tests are done with the volume-variable closed room method.The experimental equations are derived according to the law of thermodynamics and working princi-ples of test facilities,and24-hour propane injection test in the closed room are carried out and the results completely con-form to actual situation.