A Computational Investigation into the Effects of Included Spray Angle on Heavy-Duty Diesel Engine Operating Parameters 2012-01-1714
Effects of included spray angle with different injection strategies on combustion characteristics, performance and amount of pollutant emission have been computationally investigated in a common rail heavy-duty DI diesel engine. The CFD model was firstly validated with experimental data achieved from a Caterpillar 3401 diesel engine for a conventional part load condition at 1600 rev/min. Three different included spray angles (α = 145°, 105°, 90°) were studied in comparison with the traditional spray injection angle (α = 125°). The results show that spray targeting is very effective for controlling the in-cylinder mixture distributions especially when it accompanied with various injection strategies. It was found that 105° spray cone angle along with an optimized split pre- and post-Top Dead Center (TDC) injection strategy could significantly reduce NOx and soot emissions without much penalty of the fuel consumption, as compared to the wide spray angle. In addition, a narrow injection angle offers more efficient air-mixing process due to better interaction with the combustion chamber and cylinder liner.
Citation: Mobasheri, R. and Peng, Z., "A Computational Investigation into the Effects of Included Spray Angle on Heavy-Duty Diesel Engine Operating Parameters," SAE Technical Paper 2012-01-1714, 2012, https://doi.org/10.4271/2012-01-1714. Download Citation
Author(s):
Raouf Mobasheri, Zhijun Peng
Affiliated:
Univ of Sussex
Pages: 16
Event:
SAE 2012 International Powertrains, Fuels & Lubricants Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Combustion chambers
Fuel consumption
Combustion and combustion processes
Engine cylinders
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »