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Asymmetric Valve Strategies and Their Effect on Combustion
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Abstract
In order to reduce the development time involved in optimising the combustion system and valve timing of the internal combustion engine, an electro-hydraulic valve actuation system has been developed. The effects of various combustion strategies, including asymmetrical valve events, on emissions and efficiency, together with their sensitivity to EGR and AFR were investigated. In addition, the influence of the cylinder head design on in-cylinder charge motion and combustion was investigated by correlating airflow, tumble and swirl data to the heat release data obtained during dynamometer testing.
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Wilson, N., Watkins, A., and Dopson, C., "Asymmetric Valve Strategies and Their Effect on Combustion," SAE Technical Paper 930821, 1993, https://doi.org/10.4271/930821.Also In
References
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