On-board Diagnosis of Exhaust-gas for Heavy-duty Truck Driving on Road by NOx Sensor-based Portable Emission Measurement System

NOx センサベースの車載計測器を用いた 重量貨物車の排出ガス診断方法の検討

New index “NOx emission (g) per CO₂ 1 kg” is calculated by data of NOx and CO₂ emission measured with using the sensor-based emission measurement system (SEMS) consisting of a NOx sensor, a digital tachograph and a gas flow meter. And then the authors proposed a method to monitor NOx purification performance at road driving with using the above-mentioned index and exhaust-gas temperature. Moreover, they applied this method to a deterioration diagnosis for a urea selective catalytic reduction (SCR) system. As a result of consideration based on deterioration case, it was indicated that this method is effective for the diagnosis.NOxセンサベースの車載計測器をテールパイプに接続して走行しNOxおよびCO₂排出量を測り「CO₂ 1kg当たりのNOx排出量(g)」を算出し,これと排出ガス温度を用いて路上走行時のNOx浄化性能をモニターする方法を提案した.また,同手法を尿素SCRシステムの劣化診断に適用し,その有効性を検討した.


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  • Accession Number: 01673454
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: May 15 2018 3:05PM