Erscheint 12 Ausgaben pro Jahr
ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684
Indexed in
STUDIES OF GASOLINE DIRECT-INJECTION SPRAYS AT ELEVATED AMBIENT GAS TEMPERATURES AND PRESSURES
ABSTRAKT
This paper studies the influence of ambient conditions on full flow-field, temporally resolved fuel spray characteristics. The gasoline sprays from a direct-injection (DI) injector are examined for varying ambient air densities, air temperature, and fuel temperatures of practical relevance. The data presented and analyzed in this paper have been obtained utilizing temporally resolved phase Doppler anemometry and high-speed imaging (utilizing Mie-scattering) of the spray. The sprays were characterized in an established high-temperature, high-pressure constant volume rig with large optical access. Results are analyzed and discussed in comparison with the "benchmark" spray characterized at atmospheric conditions. Analysis of the injection event is subdivided into three dominant phases: early, mid, and late phase development, corresponding to the transient injection rate characteristic from a gasoline DI rate tube. In particular, the influence of each ambient parameter on the spray structure and spray quality is analyzed in terms of primary atomization, secondary droplet breakup, coalescence, and droplet vaporization. A test matrix is carefully chosen to enable decoupling of these primary spray phenomena. Elevated fuel temperature is shown to have a significant influence on primary atomization, primarily due to variation of liquid properties. This dataset is extremely useful for computational fluid dynamics model appraisal, while spatial integration of the data enables comparison with previous empirical correlations for first-order approximations of global parametric trends.
-
López J. Javier, García-Oliver J.M., García A., Domenech V., Gasoline effects on spray characteristics, mixing and auto-ignition processes in a CI engine under Partially Premixed Combustion conditions, Applied Thermal Engineering, 70, 1, 2014. Crossref
-
Yang Shichun, Gao Yanfei, Cao Yaoguang, Gu Yue, Gong Zhuoran, Investigation on Deformation of an Evaporating Droplet in Convective Transcritical Environments, Advances in Mechanical Engineering, 6, 2014. Crossref
-
Yang Shichun, Gao Yanfei, Deng Cheng, Xu Bin, Ji Fenzhu, He Yongling, Evaporation and dynamic characteristics of a high-speed droplet under transcritical conditions, Advances in Mechanical Engineering, 8, 4, 2016. Crossref
-
Gao Yanfei, Yang Shichun, Deng Cheng, Xu Bin, Ji Fenzhu, He Yongling, Breakup, instabilities, and dynamics of high-speed droplet under transcritical conditions, Advances in Mechanical Engineering, 7, 6, 2015. Crossref
-
Kale Rakesh, Banerjee R., Influence of Engine like Conditions on Macroscopic as well as Microscopic Spray Behavior of GDI Injector Using Isooctane and Alcohols, SAE Technical Paper Series, 1, 2017. Crossref
-
Muddapur Anandteerth, Srikrishna Sahu, Sundararajan T, Spray dynamics simulations for pulsatile injection at different ambient pressure and temperature conditions, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 234, 4, 2020. Crossref
-
Kale Rakesh, Banerjee R., Investigation of Macroscopic as well as Microscopic Spray Behavior of Multi-hole GDI Injector under Engine Like Hot Injector Body Conditions, SAE Technical Paper Series, 1, 2018. Crossref
-
Więcławski Krzysztof, Mączak Jędrzej, Szczurowski Krzysztof, Electric Current Waveform of the Injector as a Source of Diagnostic Information, Sensors, 20, 15, 2020. Crossref
-
Muddapur Anandteerth, Jose Jubin V., Sahu Srikrishna, Sundararajan T., Spray dynamics and evaporation in a multihole GDI injector for pulsatile and split injection at elevated ambient pressure and temperature conditions, Fuel, 279, 2020. Crossref
-
Wadkar Chaitanya, Chinnathambi Prasanna, Gudiyella Soumya, Zhong Lurun, Toulson Elisa, A Qualitative Comparison of the Macroscopic Spray Characteristics of Gasoline Mixtures and their Multi-Component Surrogates Using a Rapid Compression Machine, SAE Technical Paper Series, 1, 2021. Crossref
-
Lee Sanghoon, Park Sungwook, Experimental study on spray break-up and atomization processes from GDI injector using high injection pressure up to 30 MPa, International Journal of Heat and Fluid Flow, 45, 2014. Crossref