Experimental Results on the Effect of Piston Surface Roughness and Porosity on Diesel Engine Combustion 960036
Measurements have been made to determine the effect of piston crown surface properties on combustion. Back-to-back engine tests were conducted to compare surface modified pistons to a production piston. Each modified piston was found to prolong combustion duration. Porous coatings and a non porous, roughened piston were observed to increase fuel consumption. Increase in fuel consumption was determined to be the result of increased heat release duration. The data show surface roughness alone affects the duration of heat release. The shift in magnitude of the centroid of heat release was similar to the shift observed in insulated engine experiments.
Citation: Tree, D., Wiczynski, P., and Yonushonis, T., "Experimental Results on the Effect of Piston Surface Roughness and Porosity on Diesel Engine Combustion," SAE Technical Paper 960036, 1996, https://doi.org/10.4271/960036. Download Citation
Dale R. Tree, Paul D. Wiczynski, Thomas M. Yonushonis
Cummins Engine Co., Inc.
International Congress & Exposition
Investigations Into Diesel Engine Combustion Processes-SP-1159, SAE 1996 Transactions - Journal of Engines-V105-3