A computational fluid dynamics study of cold-flow analysis for mixture preperation in a motored four-stroke direct injection engine

Wendy Hardyono Kurniawan, Shahrir Abdullah, Azhari Shamsudeen

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this study, the Computational Fluid Dynamics (CFD) simulation to investigate the effect of piston crown to the fluid flow field inside the combustion chamber of a four-stroke direct injection automotive engine under the motoring condition is presented. The analysis is focussed on the study of the effect of the piston shape to the fluid flow characteristics. The fluid flow dynamics plays an important role for air-fuel mixture preparation to obtain the better engine combustion, performance and efficiency in the appearance of swirl and tumble flows. These two parameters represents the fluid flow behaviours occurred inside combustion chamber which influences the air streams to the cylinder during intake stroke and enhances greatly the mixing of air and fuel to give a better mixing during compression stroke. The numerical calculations were performed in a single cylinder of 1.6 L of a 4-stroke direct injection engine running at wide open throttle condition by using the CFD code. Two different piston bowls for considered engine speeds of 2000 rpm were considered to be compared to evaluate swirl and tumble flows produced during intake and compression stroke. The results obtained from the numerical analysis can be employed to examine the homogeneity of air-fuel mixture structure for better combustion process and engine performance.

Original languageEnglish
Pages (from-to)2710-2724
Number of pages15
JournalJournal of Applied Sciences
Volume7
Issue number19
Publication statusPublished - 1 Oct 2007

Fingerprint

Direct injection
Computational fluid dynamics
Flow of fluids
Engines
Pistons
Engine cylinders
Combustion chambers
Air
Numerical analysis
Flow fields
Compaction
Computer simulation

Keywords

  • Air-fuel mixture
  • Computational fluid dynamics
  • Fluid flow
  • Piston crown
  • Swirl
  • Tumble

ASJC Scopus subject areas

  • General

Cite this

A computational fluid dynamics study of cold-flow analysis for mixture preperation in a motored four-stroke direct injection engine. / Kurniawan, Wendy Hardyono; Abdullah, Shahrir; Shamsudeen, Azhari.

In: Journal of Applied Sciences, Vol. 7, No. 19, 01.10.2007, p. 2710-2724.

Research output: Contribution to journalArticle

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