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Use of Multiple Injection Strategies to Reduce Emission and Noise in Low Temperature Diesel Combustion
Technical Paper
2015-01-0831
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The low temperature combustion concept is very attractive for reducing NOx and soot emissions in diesel engines. However, it has potential limitations due to higher combustion noise, CO and HC emissions. A multiple injection strategy is an effective way to reduce unburned emissions and noise in LTC. In this paper, the effect of multiple injection strategies was investigated to reduce combustion noise and unburned emissions in LTC conditions. A hybrid surrogate fuel model was developed and validated, and was used to improve LTC predictions. Triple injection strategies were considered to find the role of each pulse and then optimized. The split ratio of the 1st and 2nd pulses fuel was found to determine the ignition delay. Increasing mass of the 1st pulse reduced unburned emissions and an increase of the 3rd pulse fuel amount reduced noise. It is concluded that the pulse distribution can be used as a control factor for emissions and noise.
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Park, W., Ra, Y., Kurtz, E., Willems, W. et al., "Use of Multiple Injection Strategies to Reduce Emission and Noise in Low Temperature Diesel Combustion," SAE Technical Paper 2015-01-0831, 2015, https://doi.org/10.4271/2015-01-0831.Also In
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