Effect of the fuel injection strategy on the combustion process in a PFI boosted spark-ignition engine

Simona S. Merola, Paolo Sementa, Cinzia Tornatore and Bianca M. Vaglieco

Energy, 2010, vol. 35, issue 2, 1094-1100

Abstract: In this paper, the effect of different fuel injection strategies on the combustion process was investigated in a boosted port fuel injection spark-ignition engine. The experiments were performed on a partially transparent single-cylinder engine, equipped with a four-valve head and boost device. Single and double fuel injection strategies were tested in the open-valve condition. Moreover, two fuel injection pressures were considered. Optical techniques based on 2D-digital imaging were used to follow the flame propagation in the combustion chamber. In particular, the diffusion-controlled flames near valves and on cylinder walls due to the fuel film burning were studied. Two-colour pyrometry was employed to measure soot concentration. In-cylinder optical investigations were correlated to the engine parameters and to the exhaust emissions.

Keywords: PFI SI engine; Boosting; Fuel injection; Fuel deposition; Optical diagnostics (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:35:y:2010:i:2:p:1094-1100

DOI: 10.1016/j.energy.2009.06.002

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