Journal of Atmospheric and Environmental Optics, Volume. 11, Issue 6, 429(2016)
Design of High Temperature Exhaust Sampling Gas Circuit for Vehicular Exhaust Measuring System
To measure COx, NOx, THC and other gas components of vehicle high temperature exhaust accurately, based on the principle of cyclone, the high temperature exhaust pretreatment regimen is discussed in detail. An improved cyclone and vehicular high temperature exhaust pretreatment gas circuit are designed, taking particulate filter chamber, cyclones, fluid resistance and membrane dryers as the main device. Particulate filter chamber is used to remove dust, metal spiral is used to drop temperature, cyclone is used to remove water and dust, resistance dispenser is used to remove water and membrane dryer is used to remove water. Without changing the exhaust gas composition and content, the gas clarity is improved. Experimental results show that the relative humidity of pretreatment gas is less than 2.5%, temperature is below 40℃, particles diameter is less than 5 μm and the content is extremely low. The sampling pretreatment system meets requirements of motor vehicle exhaust composition analysis module.
Get Citation
Copy Citation Text
LIU Guohua, ZHANG Yujun, CHEN Chen, GAO Yanwei, YOU Kun, ZHANG Kai, HE Ying, HE Chungui, LU Yibing, LIU Wenqing. Design of High Temperature Exhaust Sampling Gas Circuit for Vehicular Exhaust Measuring System[J]. Journal of Atmospheric and Environmental Optics, 2016, 11(6): 429
Category:
Received: Jul. 11, 2016
Accepted: --
Published Online: Jan. 3, 2017
The Author Email: Guohua LIU (ghliu@aiofm.ac.cn)