LPi engine combustion and emission characteristics depending on LPG properties from various fuel supply types by using DC motor type fuel pump

Ju Won Kim, In Goo Hwang, Cha Lee Myung, Simsoo Park

Research output: Contribution to journalArticle

Abstract

This study is mainly focused on the assessment of return, semi return, and returnless fuel supply system for an LPi engine. In order to compare the return type with returnless one with various LPG blends, combustion analysis and cyclic THC emission characteristic were tested at the part load operating condition of the LPi engine. Considering heat balance of each fuel supply systems, pressure and temperature increment of return type showed lower at the fuel rail during idle warm up operation However those of returnless type at LPG tank maintained stable and slow increment because the heat transfer from the LPi engine was minimized. Finally, hot restartability of each fuel supply systems were evaluated with the various LPG blends and fuel temperatures. As a result, semi return type has equivalent performance to return type considering combustion and emission characteristic hot restartability performance for LPi engine.

Original languageEnglish
Pages (from-to)907-914
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume32
Issue number12
DOIs
Publication statusPublished - 2008 Dec

Keywords

  • Control system
  • FR-FID
  • LPi
  • Return fuel delivery
  • Semi-return fuel delivery control system
  • Turbine type fuel pump

ASJC Scopus subject areas

  • Mechanical Engineering

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