Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Simultaneous Measurement of Liquid-level, Concentration and Temperature of a Urea Tank using Ultrasonic and Electrical Conductivity Sensors

초음파와 전기전도 센서를 이용한 우레아 탱크 수위, 농도 및 온도의 동시 측정 방안

  • Choi, Byungchul (School of Mechanical Engineering, Chonnam National University) ;
  • Kim, Taewook (Chonnam National University, graduate student of Depart. of Mechanical Engineering)
  • 최병철 (전남대학교 기계공학부) ;
  • 김태욱 (전남대학교 대학원 기계공학과)
  • Received : 2017.08.02
  • Accepted : 2017.09.28
  • Published : 2017.10.31
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Abstract

The purpose of this study is to propose the basic data for the development of a sensor capable of simultaneously measuring the liquid-level, concentration and temperature of a urea tank using ultrasonic and electrical conductivity sensors for diesel vehicles with a urea-SCR system. It was found that the liquid-level of the urea tank using the ultrasonic sensor showed a good linearity with the actual liquid-level, and the urea concentration maintained good linearity in the range of 32.5 wt% to 10 wt%. It was an effective measurement of urea concentration to use the electrical conductivity sensor in the temperature range of $-10{\sim}22^{\circ}C$ and to use the ultrasonic sensor at $22^{\circ}C$ or more. Simultaneous measurement of concentration, liquid-level and temperature of the urea tank will be possible by attaching the electrical conductivity sensor and the ultrasonic sensor (split-type) to one sensor together.

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References

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