Numerical Optimization of the Fuel Mixing Process in a Direct-Injection Gasoline Engine 981440
The spray formation and mixing processes in a direct-injection gasoline engine are examined by using a sophisticated air flow calculation model and an original spray model. The spray model for a spiral injector can evaluate the droplet size and spatial distribution under a wide range of parameters such as the initial cone angle, back pressure and injection pressure. This model also includes the droplet breakup process due to wall impingement. The arbitrary constants used in the spray model are derived theoretically without using any experimental data. Fuel vapor distributions just before ignition and combustion processes are analyzed for both homogeneous and stratified charge conditions.
Citation: Naitoh, K., Takagi, Y., and Kuwahara, K., "Numerical Optimization of the Fuel Mixing Process in a Direct-Injection Gasoline Engine," SAE Technical Paper 981440, 1998, https://doi.org/10.4271/981440. Download Citation
Author(s):
Ken Naitoh, Yasuo Takagi, Kunio Kuwahara
Affiliated:
Nissan Motor Co., Ltd., Institute of Space and Astronautical Science
Pages: 14
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Direct Fuel Injection for Gasoline Engines-PT-80, New Techniques in SI and Diesel Engine Modeling-SP-1366
Related Topics:
Combustion and combustion processes
Logistics
Pressure
Optimization
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