公开(公告)号：EP4209666A1

公开(公告)日：2023-07-12

申请号：EP22168708.0

申请日：2022-04-19

申请人： Shenzhen Boundless Sensor Technology Co., Ltd

发明人： Huang, Zhihui ,  Wang, Haifeng ,  Yin, Dinghong ,  Pan, Zhuying

IPC分类号： F01N3/20 ,  F01N11/00

摘要： The present disclosure discloses a urea sensor, including a top seat assembly, a pipe assembly, and an electronic measurement module assembly; the pipe assembly includes a urea extraction pipe; the electronic measurement module assembly includes a urea liquid level measurement sensor module, a urea solution concentration measurement sensor module, and corresponding measurement mechanisms; the urea liquid level measurement sensor module includes a micro differential pressure sensor, a measurement guide pipe, and a metal electrode; and the urea solution concentration measurement sensor module includes a weight sensor, an object, a motor or an electromagnet, and a structural member. The present disclosure provides a urea sensor, and aims to reduce the material cost and manufacturing cost of the urea sensor; at the same time, the measurement accuracy and the product reliability are improved; an accurate reference basis is provided for treatment of automobile exhaust gas, so that the environment can be better protected; and the production cost of a vehicle manufacturer is reduced, so that the product is more competitive.