氮氧传感器性能自动检测装置设计
王川川1，2，张振刚1，2*，王聪1，2，高伟1，2，孙后瑞1，2，唐忠刚1
1.潍柴动力股份有限公司，山东 潍坊 261061；2.国家内燃机产业计量测试中心，山东 潍坊 261061
摘要：为解决氮氧传感器在检测尾气中NOx、O2体积分数时“测不全”“测不快”“测不准”的问题，分析氮氧传感器结构组成、工作原理及控制过程，结合当前检测技术现状，设计一种氮氧传感器性能自动检测装置，该装置通过动态配气法、自动化结构检测模块及数据处理模块优化，解决“测不全”“测不快”的问题，但还应提高检测结果的精确度和系统的稳定性。
关键词：氮氧传感器；检测技术；自动检测；动态配气
Design of automatic testing device for NOx sensor performance
WANG Chuanchuan1,2, ZHANG Zhengang1,2*, WANG Cong1,2, GAO Wei1,2,SUN Hourui1,2, TANG Zhonggang1,2
1.Weichai Power Co., Ltd., Weifang 261061,China;
2.Department of National Internal Combustion Engine Industry Measuring and Testing Center, Weifang 261061, China
Abstract: In order to solve the problems of incomplete, slow and inaccurate performance testing NOx sensor, the structure, working principle and control process of NOx sensor are analyzed, and combined with the current status of testing technology, an automatic performance testing for NOx sensor is designed. This device optimizes the dynamic gas mixing method, the automated structure testing module and the data processing module to solve the problems of "slow" and "incomplete" testing, but the accuracy of the detection results and the stability of the system should also be improved.
Keywords: NOx sensor; testing technology; automatic testing; dynamic gas mixing
