Reseach of efficiency check method of  NOx analyzer converter

XIONG Zhikai1，WANG Fengjin2，WAN Jinbao3
（1 Jiangling Motor Co.， Ltd.， Nanchang  330001， China;
2 GETRAG （Jiangxi） Transmission Co. Ltd.， Nanchang   330001， China;
 3 Xinjian County Datangping Township Private Management Station，Xinjian 330119，China）

Abstract： Aiming to solve the problem that how to accurately measure  NO2 converter efficiency of NOx analyzer， gas divider cutter （GDC703） was applied GDC703 and NOx analyzer combination makes a variety of working modes NOx analyzer measured NO concentrations in different working modes In accordance with the algorithm formula， NO2  converter efficiency can be calculated The NOx analyzer measurement principle， chemical light detection， the necessity of NO2 converter efficiency by checking were introduced. It was put forward that using GDC703 to check NO2 converter efficiency Through converter efficiency by checking process decomposition and NO concentration analysis every phase， the efficiency check method was theoretically proved correct and advantageous， the calculation formula of conversion efficiency was deduced In NO2 converter efficiency check， the essential function of GDC703 is as an external ozone generator Checking test results show that this method can reduce the effect on calculation results from analyzer intrinsic measured error， makes test results accurate and reliable
Key words： ：NOx analyzer； check method; converter efficency ; gas divide cutter （GDC）