A Numerical Study on the Effect of Enhanced Mixing on Combustion and Emissions in Diesel Engines

Paper #:
  • 2016-01-0606

Published:
  • 2016-04-05
Citation:
Wadkar, C. and Ramadan, B., "A Numerical Study on the Effect of Enhanced Mixing on Combustion and Emissions in Diesel Engines," SAE Technical Paper 2016-01-0606, 2016, https://doi.org/10.4271/2016-01-0606.
Pages:
14
Abstract:
A numerical and experimental study of the use of air motion control, piston bowl shape, and injector configuration on combustion and emissions in diesel engines has been conducted. The objective of this study is to investigate the use of flow control within the piston bowl during compression to enhance fuel air mixing to achieve a uniform air-fuel mixture to reduce soot and NO emissions. In addition to flow control different piston bowl geometries and injector spray angles have been considered and simulated using three-dimensional computational fluid dynamics and experiments. The results include cylinder pressure and emissions measurements and contour plots of fuel mass fraction, soot, and NO. The results show that soot and NO emissions can be reduced by proper flow control and piston bowl design.
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