Published 12 issues per year
ISSN Print: 1044-5110
ISSN Online: 1936-2684
Indexed in
SPRAY CHARACTERISTICS OF DIESEL FUEL CONTAINING DISSOLVED CO2
ABSTRACT
The effect of adding CO2 to diesel fuel has been studied by several groups that used tailor-made injection systems to achieve notable low Sauter mean diameters (SMDs). In the present study, we use a real commercial fuel injection system and study the effect of the amount of dissolved CO2 on the resulting spray characteristics. In this case, when the mixture enters the injector and flows downstream through the variable cross-section passage toward the discharge orifice, partial nucleation of the dissolved gas is expected to occur at different locations along the duct, which transforms the mixture into tiny bubbles that grow fast downstream. When the mixture is driven out through the discharge orifice, these bubbles undergo a rapid flashing process that results in an intensive disintegration of the liquid bulk into small droplets. In the present study, we present an experimental study of the atomization process of diesel fuel containing dissolved CO2 that occurs in steady flow conditions. An extensive study was performed to map the effect of the CO2 content on the spray SMD and droplet distribution at different locations downstream the discharge orifice. It is concluded that the atomization of diesel fuel containing dissolved CO2, is significantly promoted by the flash-boiling phenomenon, which results in low SMD sprays, low D0.1 droplets, a faster breakup mechanism, and a more uniform droplet size distribution.
-
Ju Dehao, Jia Xiaoxu, Huang Zhong, Qiao Xinqi, Xiao Jin, Huang Zhen, Comparison of atomization characteristics of model exhaust gas dissolved diesel and gasoline, Fuel, 182, 2016. Crossref
-
Mukayama Tomoyuki, Yamamoto Jumpei, Kuribayashi Masaki, Asai Go, Matsumura Eriko, Senda Jiro, Improvement of Combustion Characteristics and Emissions by Applying CO2 Gas Dissolved Fuel in Diesel Engine, SAE Technical Paper Series, 1, 2019. Crossref
-
Habchi Chaouki, Real-fluid phase transition in cavitation modeling considering dissolved non-condensable gas, Physics of Fluids, 32, 3, 2020. Crossref
-
Shariatnia Shadi, Asadi Amir, Jarrahbashi Dorrin, Experimental analysis of supercritical-assisted atomization, Physics of Fluids, 33, 1, 2021. Crossref
-
Min Se Hun, Suh Hyun Kyu, Fuel Droplet Behavior in a Cylinder under the Difference Co2 Mole Fraction Conditions Controlled by Simulated-EGR in CI Engine, International Journal of Automotive Technology, 23, 1, 2022. Crossref
-
Tidball Travis, Lin Kuo-Cheng, Hammack Stephen, Ombrello Timothy, Structures of Diesel with Dissolved Gas in Supersonic Crossflow, AIAA Scitech 2021 Forum, 2021. Crossref