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In-Cylinder Fuel Evaporation and Heat Transfer Information Inferred from the Polytropic Character of the Compression Stroke in a Spark-Ignition Engine
Technical Paper
2004-01-1856
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the absence of accurate in-cylinder temperature measurements it is difficult to quantify the extent of in-cylinder fuel evaporation present in carburetted spark ignition engine. This paper reports on the analysis of the polytropic coefficient during the compression stoke in a CFR engine running on propane and a variety of liquid fuels, in addition to being motored without fuel. The inferred heat loss rate calculated from the polytropic coefficient allowed for optimisation of the form and parameters in a theoretical heat transfer model. By assessing the total inferred latent heat loss during liquid fuel operation, it was possible to quantify the extent of the in-cylinder fuel evaporation. The in-cylinder heat loss was correlated with the fuel volatility and latent heat of evaporation.
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Authors
Citation
Swarts, A. and Yates, A., "In-Cylinder Fuel Evaporation and Heat Transfer Information Inferred from the Polytropic Character of the Compression Stroke in a Spark-Ignition Engine," SAE Technical Paper 2004-01-1856, 2004, https://doi.org/10.4271/2004-01-1856.Also In
Mixture Preparation, Combustion and Emission Formation Processes in SI Engines, and Diesel Spray and Mixture Formation
Number: SP-1888; Published: 2004-06-08
Number: SP-1888; Published: 2004-06-08
References
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