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Effect of High Pressure Injection on Soot Formation Processes in a Rapid Compression Machine to Simulate Diesel Flames
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Abstract
The characteristics of diesel spray and flame in a quiescent atmosphere were studied as a function of injection pressure ranging from 30 to 110 MPa. Measurements included the spray form and Sauter mean diameter of a non-evaporating spray, the liquid phase penetration of an evaporating spray and the visualization of sooting zone in a flame.
Experimental results show that high pressure injection improves the atomization and air entrainment of non-evaporating spray and that the liquid phase penetration of evaporating spray is hardly affected by injection pressure, demonstrating a promotion of evaporation with injection pressure. Visualization of the sooting zone in a flame made it clear that high pressure injection is advantageous in reducing soot formation and shortening the combustion duration.
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Kamimoto, T., Yokota, H., and Kobayashi, H., "Effect of High Pressure Injection on Soot Formation Processes in a Rapid Compression Machine to Simulate Diesel Flames," SAE Technical Paper 871610, 1987, https://doi.org/10.4271/871610.Also In
SAE 1987 Transactions: Reciprocating Engines--Spark Ignition and Diesel
Number: V96-4; Published: 1988-09-01
Number: V96-4; Published: 1988-09-01
References
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- Chang Y.J. Kobayashi H. Matsuzawa K. Kamimoto T. “A Photographic Study of Soot Formation and Combustion in a Diesel Flame with a Rapid Compression Machine” Proc. of International Symposium on Diagnostics and Modeling of Combustion in Reciprocating Engines 1985 149 157
- Tanasawa Y. Toyoda S. “On the Atomizing Characteristics of Injectors for Diesel Engines” Tech. Rep. Tohoku Univ. 21 1 117 145
- Bayvel L.P. Jones A.R. “Electromagnetic Scattering and Its Applications” Applied Science Publishers 1981