Mobile source air toxic emissions from direct injection spark ignition gasoline and LPG passenger car under various in-use vehicle driving modes in Korea

Cha Lee Myung, Ahyun Ko, Yunsung Lim, Sunmoon Kim, Jongtae Lee, Kwanhee Choi, Simsoo Park

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Mobile source air toxic (MSAT) emissions from a direct injection spark ignition (DISI) passenger vehicle fueled with gasoline and liquid phase liquefied petroleum gas (LPG) were compared using a chassis dynamometer under several in-use vehicle driving conditions. For operation of a dedicated LPG-DI engine, low-pressure fuel systems were specially installed and various engine control parameters were recalibrated considering different chemical properties of LPG. A series of the National Institute of Environmental Research (NIER) modes for determining the emission factors of in-use vehicles in Korea were chosen to quantify not only the regulated emissions with particles but also the unregulated emissions of carbonyls, BTEX, and PAHs from a DISI light-duty vehicle (LDV) with gasoline and LPG. The regulated and particle emissions of LPG-DI vehicles showed strong reduction, and the proportions of sub-23 nm particles were 32-35% in gasoline and 50-65% in LPG. The results revealed that the levels of the MSAT emissions from a DISI engine were closely related to the driving patterns and the fuel properties. A substantial reduction of regulated emissions, particulates, BTEX, and particle-bound PAH emissions was achieved from a LPG-DI vehicle in real driving conditions. Carbonyl compounds acetaldehyde and acrolein showed significant increment from a LPG-DI vehicle.

Original languageEnglish
Pages (from-to)19-31
Number of pages13
JournalFuel Processing Technology
Volume119
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Carbonyl compounds
  • In-use vehicle driving mode
  • LPG-direct injection
  • Mobile source air toxic emissions
  • Particulate emissions
  • Polycyclic aromatic hydrocarbons

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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