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:: Volume 68, Issue 68 (Autumn 2022 2022) ::
Vol.68 No. 68 pp. 31-38 Back to browse issues page
Numerical investigation the effect of accumulator on reducing the ‎pressure waves in a common rail fuel injection system of diesel engine
Rasoul Hematian, Seyed Reza Hassan-Beygi, Jafar Massah, Alireza Hajialimohammadi
Abstract:   (261 Views)
Pressure fluctuations during fuel injection are one of the factors that negative effect on performance of diesel engine. These fluctuations are caused by the rapid opening and closing of the nozzles and the creation of pressure waves in the fuel rail. One way to control these pressure fluctuations is to change the injector design and use an accumulator in the injector. This study is performed to investigate the effect of adding accumulator on the injector to control pressure waves in the common rail fuel injection system of diesel engines. As the simulation results show, at injection pressure of 1000 bar and energizing time of 0.8 milliseconds, in the case of no accumulator, the maximum pressure fluctuation in the fuel rail is 1046 bar and the minimum pressure is 891 bar. By adding an accumulator with a volume of 4 cm3, the maximum pressure continued to decrease and reached 1023 bar, and the minimum pressure of the fuel rail increased by 17 bar, 943 bar. These changes are also noticeable in other pressures and energizing times, so the best accumulator that has the most impact on reducing pressure fluctuations is the accumulator with a volume of 4 cm3.
Article number: 4
Keywords: Accumulator, Common rail, Diesel engine, Fuel pressure, Pressure fluctuations
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Type of Study: Applied Study | Subject: General
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Hematian R, Hassan-Beygi S R, Massah J, Hajialimohammadi A. Numerical investigation the effect of accumulator on reducing the ‎pressure waves in a common rail fuel injection system of diesel engine. JER 2022; 68 (68) :31-38
URL: http://engineresearch.ir/article-1-845-en.html


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Volume 68, Issue 68 (Autumn 2022 2022) Back to browse issues page
فصلنامه تحقیقات موتور The Journal of Engine Research
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