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本文介绍了作者所设计的液压式瞬时取样阀及分析样气中 NO_x 的快速苯酚二磺酸法。液压式取样阀是由一个喷油器和取样阀背靠背安装在一起,用一辅助油泵驱动阀背上的喷油器,靠喷油器的针阀升程作为开阀动力使取样阀瞬时开启,开阀精度达到了一般取样阀要求。对缸内某一空间位置的 NO_x 取样分析,其结果和通常的试验、计算结果是一致的。这说明作者所设计的取样阀和选用的分析方法是可行的。
This article describes the design of the hydraulic instantaneous sampling valve and analysis of the sample NO x rapid phenol disulfonic acid method. Hydraulic sampling valve is a fuel injector and sampling valve mounted back to back together, with an auxiliary pump drive valve on the back of the injector, injector needle valve lift as the valve opening power to open the sampling valve instantly, Open valve accuracy to achieve the general sampling valve requirements. The NO_x sampling analysis of a certain spatial position in the cylinder is consistent with the results of the usual tests and calculations. This shows that the author designed the sampling valve and the selection of analytical methods is feasible.