Study of cyclic variation in an SI engine using quasi-dimensional combustion model

E. Abdi Aghdam*, A. A. Burluka, T. Hattrell, K. Liu, C. G.W. Sheppard, J. Neumeister, N. Crundwell

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

25 Citations (Scopus)


The paper is concerned with the effects of cyclic variation in turbulence (expressed in terms of rms turbulent velocity) on the burn rate and subsequent cyclic variation in in-cylinder pressure derived parameters. The task has been addressed by applying a thermodynamic engine modelling approach for simulations of two very different engines; a single cylinder research engine in which sources of cyclic variation other than turbulence had been minimised and a multi-cylinder production engine. The cyclic variability in the two engines had a number of similar features; the effects of turbulence variation cycle-to-cycle proved dominant in the production engine, mixture strength secondary and prior-cycle residual concentration feedback marginal.

Original languageEnglish
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event2007 World Congress - Detroit, MI, United States
Duration: 16 Apr 200719 Apr 2007


Conference2007 World Congress
Country/TerritoryUnited States
CityDetroit, MI


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