High reliability - Ultrasonic AdBlue Quality Sensor : an essential sensing component for urea detection in commercial vehicle SCR systems

In recent years, with the increasing global awareness of energy conservation and carbon reduction, various countries and regions have gradually introduced regulations to limit automobile exhaust pollutant emissions, especially exhaust emissions from diesel commercial vehicles.

Most of these regulations set lower emission limits for pollutants such as nitrogen oxides, particulate matter (PM), carbon monoxide, hydrocarbons, etc. Some countries and regions have also added emission limits for pollutants such as particle number (PN) and ammonia . The exhaust emission requirements for diesel engines have been greatly improved. As one of the core systems for post-treatment of pollutant emissions, the SCR system has become more important.

Ultrasonic AdBlue Quality Sensor: an essential sensing component for commercial vehicle SCR systems

It is understood that countries or regions with strict requirements for commercial vehicle exhaust emission treatment require commercial vehicles to use " driver alarm system " and " driving performance restriction system " to monitor exhaust emissions in real time to ensure that the treatment system works normally and the exhaust meets the emission standards. If the diesel engine exhaust treatment fluid is not loaded, or the purity is insufficient, or the quality is poor, the system will upload the problem directly to the relevant regulatory department and inform the driver to repair it as soon as possible. The vehicle engine will be limited in torque and speed . In addition , poor-quality diesel exhaust treatment fluid will contaminate the catalyst in the SCR catalytic unit , causing serious consequences. Therefore, reliable performance quality is an essential sensing component for the SCR system.

Ultrasonic AdBlue Quality Sensor specifically for SCR system urea detection . This product combined with a matching circuit, can monitor the quality of automotive urea in real time, with high reliability and good consistency. 

Currently, ultrasonic measurement is the mainstream technical solution for detecting urea quality in the market .

Working principle of Ultrasonic AdBlue Quality Sensor

Quality detection are carried out by using the different propagation speeds of ultrasound in different media and liquids of different concentrations . The quality sensor emits ultrasound and receives echo signals. By calculating the round-trip time of ultrasound in a fixed distance in the liquid and comparing the time difference, the concentration difference of the liquid is obtained, thereby determining whether the urea is compliant.

High reliability and stable signal

Ultrasonic AdBlue Quality Sensor can maintain a stable urea concentration signal output in high and low frequency vibration environments , and can promptly remind the driver whether the urea concentration in the urea tank is abnormal, to ensure that the vehicle's exhaust emissions meet strict emission regulations. The product adopts a full metal sealing design, and its waterproof level meets the IP68K/IPX7/IPX9K requirements. It can meet various extreme working conditions in the vehicle and has passed the reliability requirements of many international car manufacturers.

Superior performance, industry-leading

Ultrasonic AdBlue Quality Sensor is compatible with mainstream software solutions in the market. The company's R&D and production teams have mastered a number of core technologies related to urea quality. The effective signal to noise ratio is as high as 6.0, and the product performance leads the industry.

Good consistency, high quality products

ADW strictly implements the IATF16949 quality management system, with good product consistency and high quality, meeting the requirements of SCR after-treatment system parts suppliers.

Personalized customization, providing full-chain services

Ultrasonic AdBlue Quality Sensor can be customized according to customer requirements. It is compatible with various urea tanks and various urea sensor assemblies . It provides full-chain services such as product design, testing, and production to meet the high-precision requirements of urea quality detection in commercial vehicle SCR systems.