Numerical Simulation on Effect of Nozzle-Hole Layout on Spray Characteristics and Combustion in a DI Diesel Engine

Abstract:

Diesel spray characteristics are closely related to the combustion of the engine where the spray tip penetration and the fuel atomization play a key role especially for direct injection (DI) diesel engine. With different nozzles, the fuel atomization and evaporation will be different thereby affecting the combustion and emission characteristics. A three-dimensional model is built based on the parameters of a DI diesel engine, and its validation is also validated. Three nozzle-hole layouts are designed in this research, including the conventional hole, multi-hole, and group-hole. The spray characteristics and combustion process are studied with three different nozzle-hole layouts by the way of numerical simulation. Further more, the effect of inter-hole spacing of group-hole nozzle on the evaporation rate and combustion process is researched here.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 448-452
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.448
• Online since: February 2012
• Authors: Jun Zhang, Chang Pu Zhao, Nai Zhuan Chen, Da Lu Dong, Bo Zhong
• Keywords: Combustion, Group-Hole, Nozzle-Hole Layout, Numerical Simulation, Spray Characteristics

References

[1] L. M. Pickett and D. L. Siebers: SAE Paper 2004-01-1399, (2004)

[2] H. Hiroyasu and M. Arai: SAE Paper 900475, (1990)

[3] T. F. Su and P. V. Farrell: Atomization Sprays Vol. 8 (1998), p.83

[4] Yuyin Zhang, Keiya Nishida and Shinsuke Nomura: SAE Paper 2003-01-3115, (2003)

[5] S. M. Shahed, W. S. Chiu and W. T. Lyn: IME C94/75 (1975), p.119

[6] H.Hiroyasu and T. Kadota: SAE Paper 760129, (1976)

[7] S. C. Kong and R. D. Reitz: Combustion Theory and Modeling Vol 7 (2003), p.4317