دوره 8، شماره 4 - ( 9-1397 )
جلد 8 شماره 4 صفحات 2847-2840 |
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Hassanzadeh Saraei S, Khalilarya S, Jafarmadar S, Takhtfirouzeh S, Taghavifar H. Numerical modeling of the effects of changing injection duration in double injection strategies in a DI diesel engine . ASE 2018; 8 (4) :2840-2847
URL: http://www.iust.ac.ir/ijae/article-1-471-fa.html
URL: http://www.iust.ac.ir/ijae/article-1-471-fa.html
Numerical modeling of the effects of changing injection duration in double injection strategies in a DI diesel engine . Automotive Science and Engineering. 1397; 8 (4) :2840-2847
چکیده: (20596 مشاهده)
Pollutant emissions from diesel engines are significantly affected by fuel injection strategies that could reduce NOx and Soot emissions. For the first time and in this study, numerical simulations were performed to consider the influences of changing the injection duration in each pulse of the double injection strategies on in-cylinder parameters and pollutant emissions. Results confirmed that double injection strategies could influence the in-cylinder temperature, which leads to a reduction in NOx and soot emissions. Additionally, it is seen that decreasing the injection duration could increase the in-cylinder peak pressure and temperature. It could also reduce the soot emission owing to the better fuel atomization. Moreover, RATE+0.5CA case, which injection duration for each pulse increases 0.5 CA, was selected to be the optimum case in reduction of pollutant emissions.
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