A car with ammonia nitrogen oxide integrated sensor comprises a porous layer, dense layer and a plurality of measuring cell porous layer and dense layer are arranged in parallel between the porous layer and dense layer filled with zirconia electrolyte, several measuring pool are connected in sequence and arranged on the porous layer and the dense layer between the porous layer and the dense layer relative the side surface of a NH3 measurement of negative electrode and the positive electrode oxygen pump, measuring pool with NH3 measurement of positive electrode, a main pump oxygen electrode second measuring tank, pump provided with additional oxygen electrode and the measurement of nitrogen oxides third electrode measurement pool, the structure of the invention is greatly reduced, weight and small volume, convenient installation, easy to match with the different vehicles, can realize the measurement of nitrogen oxides with ammonia and nitrogen oxides and ammonia, and the measurement of the mutual interference, to ensure the accuracy and reliability of the measurement It satisfies the requirements of SCR system control and on-board diagnosis. Compared with the existing independent NOx sensor and NH3 sensor, the cost is greatly reduced and the economic superiority is achieved.
【技术实现步骤摘要】
车用氮氧化物氨气集成传感器
本专利技术涉及的是一种尾气测量领域的技术,具体是一种车用氮氧化物氨气集成传感器。
技术介绍
氮氧化物NOx(NO和NO2)作为一种重要的大气污染物,是酸雨和光化学烟雾的主要成因之一。此外,其还能引发人类呼吸道系统疾病。作为氮氧化物的主要排放源之一,柴油车尾气NOx排放控制已成为我国亟待解决的大气环境污染问题。NH3是一种刺激性气体,对人体皮肤和粘膜有腐蚀和刺激作用。随着排放法规的升级,对柴油车SCR系统NH3逃逸量进行监测也逐步提上日程。因此,对NOx排放和NH3逃逸进行测量已成为必不可少的技术手段。现有的NOx传感器对NH3具有显著的交叉感应现象.这种特性使得位于SCR反应器下游的NOx传感器在NH3逃逸时的读数偏高,导致系统喷入更多的尿素,进而导致更多的NH3逃逸和更高的NOx传感器读数。现有技术都是采用交叉感应常数来补偿NH3引起的传感器读数误差,但该系数会因为传感器老化和环境因素而改变。同样,NH3传感器对NOx也存在交叉感应现象,尤其是当氨浓度较低时这种现象尤为显著,这也同样导致NH3传感器对氨泄漏量判断的失准。
技术实现思路
本 ...
【技术保护点】
一种车用氮氧化物氨气集成传感器,其特征在于,包括:多孔层、致密层和若干测量池,其中:多孔层与致密层平行设置,多孔层与致密层之间充填有氧化锆电解质,三个测量池依次相连且设置于多孔层和致密层之间,多孔层的与致密层相对侧表面设有NH3测量负电极和泵氧正电极,第一测量池内设有NH3测量正电极,第二测量池中设有主泵氧电极,第三测量池中设有附加泵氧电极和氮氧化物测量电极。
【技术特征摘要】
1.一种车用氮氧化物氨气集成传感器,其特征在于,包括:多孔层、致密层和若干测量池,其中:多孔层与致密层平行设置,多孔层与致密层之间充填有氧化锆电解质,三个测量池依次相连且设置于多孔层和致密层之间,多孔层的与致密层相对侧表面设有NH3测量负电极和泵氧正电极,第一测量池内设有NH3测量正电极,第二测量池中设有主泵氧电极,第三测量池中设有附加泵氧电极和氮氧化物测量电极。2.根据权利要求1所述的车用氮氧化物氨气集成传感器,其特征是,所述的第一测量池...
【专利技术属性】
技术研发人员:林赫,翟红章,管斌,湛日景,李忠照,
申请(专利权)人:上海交通大学,
类型:发明
国别省市:上海,31
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