Emission Behavior of NOx, NH₃ and N₂O from the Truck Equipped with Urea SCR System under Road Driving

尿素SCR システム搭載貨物車の路上走行時におけるNOx,NH₃ およびN₂O の排出挙動

It was investigated whether the urea SCR system has sufficient effect of NOx reduction or not under driving on the ordinary road. The driving test was conducted by putting the on-board FT-IR gas analyzer on the light-duty truck equipped with urea SCR system. Functional performance of that system was analyzed by continuous measurement data of the concentration of NOx, N₂O, etc. and exhaust-gas temperature. As test results, it was revealed that the NOx reduction effect cannot be sufficiently exhibited if the SCR catalyst is not heated to the activation temperature, and phenomena enlarging the N₂O emission during cold-start was found.尿素SCRシステム搭載貨物車に車載式FTIR分析装置を搭載して一般幹線道路を走行し,排出ガス中のNOx,N₂O等の濃度と排出ガス温度を連続計測し,同システムの機能状態を調査した.その結果,SCR触媒が活性温度まで昇温されずNOx低減効果が十分に発揮されない場合や冷始動時のN₂O排出現象が確認された.

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  • Accession Number: 01676732
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:14PM