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Three-Dimensional Spray Distributions in a Direct Injection Diesel Engine
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English
Abstract
Experiments and modeling of a spray impinged onto a cavity wall of a simulated piston were performed under simulated diesel engine conditions (pressure and density) at an ambient temperature. The diesel fuel was delivered from a Bosch-type injection pump to a single-hole nozzle, the hole being drilled in the same direction as the original five-hole nozzle. The fuel was injected into a high-pressure bomb in which an engine combustion chamber, composed of a piston, a cylinder head and a cylinder liner, was installed. Distributions of the spray impinged on the simulated combustion chamber were observed from various directions while changing some of the experimental parameters, such as combustion chamber shape, nozzle projection and top-clearance. High-speed photography was used in the constant volume bomb to examine the effect of these parameters on the spray distributions. The spray distributions obtained in the simulated combustion chamber are compared to the distributions calculated by a spray model based on a multi-package spray model.
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Yoshizaki, T., Nishida, K., Hiroyasu, H., and Song, K., "Three-Dimensional Spray Distributions in a Direct Injection Diesel Engine," SAE Technical Paper 941693, 1994, https://doi.org/10.4271/941693.Also In
Diesel Engines: Fuel Injection, Combustion, Emissions, and Exhaust Aftertreatment
Number: SP-1050; Published: 1994-09-01
Number: SP-1050; Published: 1994-09-01
References
- Yoshizaki, T. Nishida, K. Hiroyasu, H. SAE Paper No. 930612 1993
- Arai, M. Tabata, M. Hiroyasu, H. Shimizu, M. SAE Paper No. 840275 1984
- Hiroyasu, H. Nishida, K. 1989 SAE International Congress and Exposition 1989