Estimation of Fuel Economy and Emissions for Heavy-duty Diesel Plug-in Hybrid Vehicle with Electrically Heated Catalyst System

触媒昇温装置搭載ディーゼルプラグインハイブリッド重量車の環境性能評価

In order to reduce the emissions of the heavy-duty diesel plug-in hybrid vehicles (PHEV), it is necessary to provide the high exhaust-gas temperature and to keep the aftertreatment system effective. The engine starting condition of PHEV is cold, and the engine start and stop is repeated. Therefore, the warm-up of the exhaust-gas aftertreatment system for PHEV takes longer time. So, it may cause negative effects on the emission characteristics of PHEV. In this study, the authors focused on the electrically heated catalyst system (EHC), which is one of the next generation electrical technologies. This test PHEV was equipped with EHC. The fuel economy and emission characteristics of this test PHEV were estimated using the extended-HILS. This result was that NOx and CO₂ emission of this test PHEV which was equipped with EHC was good, compared with the heavy-duty diesel vehicle, the heavy-duty diesel hybrid vehicle and conventional PHEV which was not equipped with EHC.次世代電動化技術である触媒昇温装置に着目した.プラグインハイブリッド重量車は,エンジン始動時は冷機状態で,その後エンジンON/OFFを繰り返すことから排出ガス後処理装置が暖まりにくく,排出ガス悪化が懸念される.本報では,当該車両の触媒を強制的に暖め,モード走行時の燃費性能や排出ガス特性を調査した.

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  • Accession Number: 01676646
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: May 15 2018 3:07PM