JARI Research Journal
Online ISSN : 2759-4602
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Volume 2012, Issue 2
JARI Research Journal 2012.02
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Research Report
  • Study of On-Board Exhaust Emissions Measurement Device for Heavy-Duty Vehicles (Second Report)
    －Study of On-Road Emissions Evaluation Methodologies－
    Seiichi SOMA, Toshitaka MINAMI
    Article type: Research Report
    2012Volume 2012Issue 2 Article ID: JRJ20120201
    Published: 2012
    Released on J-STAGE: December 18, 2025
    DOIhttps://doi.org/10.60458/jarijrj.JRJ20120201
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    In recent years, measuring exhaust emissions from in-use vehicles on the road using an on-board exhaust-gas-measurement device (Portable Emission Measurement System: PEMS) has been studied in the United States (US) and Europe (EU). This two different emission evaluation methodologies have been proposed:, the NTE control-area method from the US, and the Average-window method from EU. In this report, the US and EU methodologies are compared by real road driving of several Japanese heavy trucks. The results indicated that the Average-window method is better than the NTE control-area method for driving in Japan．
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