Urea sensor integrated with function of urea quality detection

Abstract

Disclosed is a urea sensor integrated with a function of urea quality detection. The urea sensor comprises a urea sensor body arranged on the upper portion, a base arranged on the lower portion and a pipe body structure disposed between the sensor body and the base. The pipe body structure comprises an electronic pipe, a urea pipe and a heated water pipe. A CAN bus connected with a control device is mounted on the upper portion of the urea sensor body and penetrates through the urea sensor body to be connected with the electronic pipe. The CAN bus is further connected with a urea quality sensor and a temperature sensor. By means of the arranged quality sensor, quality detection of urea in a urea tank can be performed, the quality of the urea is guaranteed, high-efficiency treatment of vehicle tail gas is achieved by means of the urea, and environmental pollution caused by unqualified urea treatment for the vehicle tail gas is effectively prevented.

Description

technical field [0001] The invention relates to the field of liquid level sensing, in particular to a urea sensor integrating urea quality detection. Background technique [0002] As the country pays more attention to the control of air pollution, the tail gas pollution emitted by vehicles using fossil fuel internal combustion engines as the traction force has also attracted more and more attention, especially the NOx pollutants emitted by diesel-powered engines. Post-treatment means reduce it and reduce a series of environmental problems caused by pollutants such as NOx. On July 1, 2008, my country began to implement the National III emission regulations, and on January 1, 2010, the National IV emission regulations were implemented. In the fierce market competition, manufacturers have to improve or develop engines according to emission standards. At present, the technical routes to achieve the National IV emission standards include SCR (selective catalytic reduction of ur...

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Problems solved by technology

[0003] However, the quality of urea is often only collected at the time of delivery or testing. The current liquid level sensor does not add a urea quality sensor. To save money, it is not necessary to add pure urea, or use water or unqualified urea solution, completely ignoring a series of environmental problems caused by pollutants such as NOx, which makes SCR useless

Therefore, if the said defect cannot be avoided completely, the vehicle exhaust will pollute the air unscrupulously, which will bring secondary pollution disaster to the environment.

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