Experimental Investigation of the Effects of Air Injection and Injection Timing in a Natural Aspirated DI Diesel Engine
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 26، شماره: 12
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 759
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شناسه ملی سند علمی:
JR_IJE-26-12_014
تاریخ نمایه سازی: 17 خرداد 1393
چکیده مقاله:
In this experimental study, the effect of creating an air jet inside the combustion chamber by establishing an air-cell inside of the piston body at different injection timings in a DI diesel engine hasbeen studied at 2000 rpm and full load operation. The performed tests include studying the Soot andNOx emissions, combustion and performance parameters. The obtained experimental results show that using an air-cell inside the piston causes in simultaneous reduction of Soot and NOx emissions. In additon, advanced injection timing results in increasing of brake power and reduction of brake specificfuel consumption(bsfc) with increasing of maximum pressure in the combustion chamber and maximum value of heat release rate. Furthermore, the results showed that the best time injection for air cell engine is 13BTDC, in which the NOx and soot emissions decrease by 15% and 50%, respectively,while BSFC and power remains relatively unchanged.
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نویسندگان
m Mansoury
Mechanical Engineering Department, University of Urmia, Iran
s Jafarmadar
Mechanical Engineering Department, University of Urmia, Iran