Start control strategy in electronically controlled LPG port injection spark ignition engine

  • Shi Chun Yang*
  • , Xiu Min Yu
  • , Rui Tang
  • , Le Liu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The cold start tests were performed comparatively for the liquid petroleum gas (LPG) and gasoline engines at the ambient temperatures of 9, 15 and 20°C respectively. The results showed that the fuel air mixture suitable for the LPG engine start is leaner than that of the gasoline engine. The first fuel injection pulse width for the start of the gasoline engine is about 6.9 times of that at the normal idle condition, while it needs only 2.5 times for the LPG engine. Because of the lower volumetric efficiency, the initial throttle openings for the start and idling of the LPG engine are larger than those of the gasoline engine. Generally speaking, the start behavior of the LPG engine is better than that of the gasoline engine.

Original languageEnglish
Pages (from-to)46-51
Number of pages6
JournalJilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
Volume36
Issue numberSUPPL. 2
StatePublished - Sep 2006
Externally publishedYes

Keywords

  • Cold start
  • Control strategy
  • Electric control unit (ECU)
  • Engine
  • Liquefied petroleum gas (LPG)
  • Vehicle engineering

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