Characterization of diesel spray combustion using two-color pyrometry and OH∗ chemiluminescence imaging- comparison between micro-hole and ultra-high injection pressure effects

Zhai, Chang; Zhang, Gengxin; Jin, Yu; Nishida, Keiya; Ogata, Yoichi; Luo, Hongliang

doi:10.1016/j.joei.2022.05.012

Cited by 17 publications

(2 citation statements)

References 34 publications

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“…On one hand, changes in fuel properties can lead to variations in needle valve movement, liquid core breakup, and spray characteristics [20][21][22][23][24]. Furthermore, the composition, volatility, density, viscosity, and other physical and chemical properties of fuels have a direct impact on how effectively they mix with air, the stability of the resulting mixture, and the characteristics of the combustion process [25,26]. Therefore, as the first step in the ongoing synthetic fuels investigation, the unveiling physical and chemical properties of synthetic fuels is deemed crucial.…”

Section: Articlementioning

confidence: 99%

Investigation on Fuel Properties of Synthetic Gasoline-like Fuels

Huang,

Koichi,

Yohko

et al. 2024

IJAMM

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Article Investigation on Fuel Properties of Synthetic Gasoline-like Fuels Weidi Huang 1,2, Koichi Kinoshita 1,*, Yohko Abe 1, Mitsuharu Oguma 1, and Kotaro Tanaka 2,3 1 Research Institute for Energy Conservation, National Institute of Advanced Industrial Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan 2 Carbon Recycling Energy Research Centre, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan 3 Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan * Correspondence: koichi-kinoshita@aist.go.jp Received: 8 November 2023 Accepted: 25 March 2024 Published: 27 March 2024 Abstract: Synthetic fuels have gained considerable attention due to their promising characteristics. A comprehensive survey was undertaken to assess the availability of synthetic fuels in the global market, followed by an investigation to evaluate their potential in engines. This report presents the initial findings regarding the physical and chemical properties of synthetic gasoline-like fuels, specifically DMC (dimethyl carbonate), bioethanol, EtG (ethanol-to-gasoline), G40, and bio-naphtha. A comparison was conducted between these synthetic fuels and conventional gasoline. Furthermore, discussions were provided to enhance the understanding of the potential influence of fuel properties on spray and combustion characteristics. EtG and G40 are specifically designed to emulate conventional gasoline. Results indicate that EtG and gasoline should be directly interchangeable in the engine or blended in any proportion because they have almost identical Research Octane Number (RON)/Motor Octane Number (MON), fuel density, and higher heating value (HHV). G40 has a higher RON (105) compared with that of gasoline (92.2), likely resulting from the high content of iso-paraffin in G40. Bio-naphtha exhibits the high fraction of paraffin and naphthene content relative to other fuels. The feature of chemical compositions results in a lower RON (55.9), lower HHV and smaller fuel density compared to other fuels. DMC and bioethanol blends in gasoline were investigated. Regardless of whether DMC or bioethanol is incorporated, under a 60% blend ratio, gasoline distillation accelerates initially, until DMC or bioethanol completely evaporates, after which gasoline distillation returns to its normal rate. With increasing the volumetric fraction of the ethanol in the blends, either chemical compositions or the RON/HHV basically change linearly.

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Section: Articlementioning

confidence: 99%

Investigation on Fuel Properties of Synthetic Gasoline-like Fuels

Huang,

Koichi,

Yohko

et al. 2024

IJAMM

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“…Similarly, Aatola et al [28] compared combustion and emission results of diesel, HCB, and diesel/HCB blends, observing that the incorporation of HCB was equally effective in diminishing soot emissions. Zhai et al [29] indicates that reducing the hole diameter and increasing injection pressure can inhibit soot generation more effectively. Zhong et al [30] blended HCB with gasoline in varying ratios and investigated the combustion and emission attributes across different workloads.…”

Section: Introductionmentioning

confidence: 99%

Optical Study on Soot Formation of Ethanol/ hydrogenated Catalytic Biodiesel/octanol Blends

Zhou,

Zhong,

Pachiannan

et al. 2023

IJAMM

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Article Optical Study on Soot Formation of Ethanol/hydrogenated Catalytic Biodiesel/octanol Blends Shufa Zhou 1, Wenjun Zhong 1,*, Tamilselvan Pachiannan 2, Qing Liu 1, Feibin Yan 1, Jiafeng Chen 1, Zhixia He 2, and Qian Wang 1 1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China 2 Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China * Correspondence: wj_zhong@ujs.edu.cn Received: 5 September 2023 Accepted: 2 November 2023 Published: 28 November 2023 Abstract: The incorporation of alcohol-based fuel is pivotal in attenuating soot emissions arising from highly reactive hydrocarbon-based fuels. To elucidate the mechanism through which ethanol curtails soot formation in hydrogenated biodiesel, an experimental inquiry was undertaken by employing the high-frequency background light extinction technique within a constant volume combustion chamber system. The primary objective of this study was to scrutinize the impact of blending ethanol with highly reactive fuel on soot generation. Empirical evidence shows that ethanol, owing to its substantial oxygen content, has the potential to facilitate soot oxidation. Incorporating ethanol effectively diminishes soot formation in aspects of quantity, rate, and area. The initial time and location of soot formation increase as the ethanol blending ratio increases. The influence of latent heat of evaporation and Cetane Number on the initial time and location of soot formation varies with distinct environmental temperatures. At 750 K, the latent heat of evaporation exhibits a more pronounced influence in contrast to the Cetane Number. As the temperature rises, the Cetane Number gradually becomes more influential. At a temperature of 825 K and an oxygen content of 21%, the E30H60O10 blend shows an increase of 21.2% and 21.4% in the initial time and location of soot formation, respectively, compared to the E15H75O10 mix. Furthermore, there is a reduction of 75.8% in the total soot mass.

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