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Analysis of mechanism of ducted fuel injection under non-vaporizing condition
Fuel, 2021Abstract Diesel engines play an important role in road transportation. However, they are facing strict regulations in reducing soot and harmful substances emissions. Ducted fuel injection (DFI) is a new method that effectively attenuates soot on a large scale. How this technology reduces emissions by boosting spray atomization remains unknown.
Han Wu, Ziman Wang, Chia-fon Lee
exaly +2 more sources
SAE Technical Paper Series, 2022 <div class="section abstract"><div class="htmlview paragraph">Ducted Fuel Injection (DFI) has the potential to reduce soot emissions in Diesel engines thanks to the enhanced mixing rate resulting from the liquid fuel flow through a small cylindrical pipe located at a certain distance from the nozzle injector hole.
Lucchini T. +3 more
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Determining tolerance requirements for spray-duct alignment in ducted fuel injection
International Journal of Engine ResearchSeveral ducted fuel injection (DFI) studies have highlighted the importance of accuracy in aligning the duct axis with that of its corresponding spray for optimal effectiveness, as misalignment adversely impacts the method’s performance. The need for accurate alignment could lead to added manufacturing complexity via tighter tolerances.
Ramazan Şener +1 more
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Ducted Fuel Injection: An Experimental Study on Optimal Duct Size
SAE Technical Paper Series, 2022<div class="section abstract"><div class="htmlview paragraph">Ducted fuel injection (DFI), a concept that utilizes fuel injection through ducts, was implemented in a constant pressure High Temperature Pressure Vessel at 60 bar ambient pressure, 800-1000 K ambient temperature, and 21 % oxygen.
Kenth Svensson +2 more
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Atomization and Sprays, 2023
To study the influence of ducts other than circular shapes on spray characteristics of ducted fuel injection (DFI), experimental and simulation methods were used to study the impacts of elliptical ducts on DFI macroscopic spray characteristics. Two elliptical ducts, small and large, were used, with a circular duct for comparison.
Feng Li, Ziman Wang, Chia-Fon Lee
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To study the influence of ducts other than circular shapes on spray characteristics of ducted fuel injection (DFI), experimental and simulation methods were used to study the impacts of elliptical ducts on DFI macroscopic spray characteristics. Two elliptical ducts, small and large, were used, with a circular duct for comparison.
Feng Li, Ziman Wang, Chia-Fon Lee
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Experimental investigation of mixing phenomena for ducted fuel injection
Proceedings of the Combustion InstituteAdam M Steinberg +2 more
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International Journal of Engine Research, 2022
In this work, experiment and simulation methods were employed to investigate the spray characteristics of ducted fuel injection (DFI) configured the conical duct. A cylindrical duct was used for comparison. The diameter of the small port of the conical duct is the same as the diameter of the cylindrical duct hole.
Feng Li +4 more
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In this work, experiment and simulation methods were employed to investigate the spray characteristics of ducted fuel injection (DFI) configured the conical duct. A cylindrical duct was used for comparison. The diameter of the small port of the conical duct is the same as the diameter of the cylindrical duct hole.
Feng Li +4 more
openaire +1 more source
The Effects of Fuel Injection Angle and Injection Velocity on Propulsive Droplets Sizing in a Duct
Applied Mechanics and Materials, 2011— The effects of fuel injection angles on the average diameter of fuel propulsive droplets sizing and efficient mass fraction in combustion chamber of a ramjet are numerically investigated in the present paper. We named the mass of fuel vapor inside the flammability limit as the efficient mass fraction.
Mohammad Mahdi Doustdar +1 more
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Ducted Fuel Injection: Effects of Stand-Off Distance and Duct Length on Soot Reduction
SAE International Journal of Advances and Current Practices in Mobility, 2019<div class="section abstract"><div class="htmlview paragraph">Ducted fuel injection (DFI) has been shown to be an effective method to significantly reduce soot formation in mixing controlled compression ignition (MCCI) diesel combustion. This reduction has been demonstrated in both combustion vessels and in an optical engine. The mechanisms
Kenth I. Svensson, Glen C. Martin
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