Experimental Study of Dual-Fuel Diesel/Natural Gas High-Pressure Injection

Lei, Yan; Wu, Yue; Qiu, Tao; Zhou, Dingwu; Lian, Xiaojie; Jin, Wenbo

doi:10.1021/acsomega.2c05468

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…The results showed that the SPA increased with an increase in the CTL blending ratio, mainly because the viscosity of CTL fuel is lower than that of diesel fuel and plays a key role in fuel atomization. Simultaneously, the increase in IP enhanced the entrainment effect of the spray and promoted droplet fragmentation and atomization. , Overall, blending CTL fuel with diesel fuel improves the spray quality under non-evaporating conditions.…”

Section: Resultsmentioning

confidence: 99%

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Spray and Combustion Characteristics of CTL–Diesel Fuel Blends in a Constant-Volume Combustion Chamber

et al. 2023

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Coal-to-liquid (CTL) fuel is considered a promising alternative fuel for diesel engine applications in China owing to its excellent fuel properties. However, little research on the spray and combustion processes of CTL fuel has been scarce. Therefore, in this study, the spray and combustion characteristics of diesel fuel blends with different CTL fuel blending ratios were investigated in a constant-volume combustion chamber. The results show that under non-evaporation conditions (300 K), a longer spray tip penetration (STP) and enlarged spray cone angle (SCA) were obtained with a higher injection pressure owing to the enhanced turbulent interaction. The SCA of CTL fuel blending was larger than that of diesel fuel owing to its lower viscosity and slightly shorter STP. Under the evaporation condition (700 K), with an increase in the CTL mixing ratio, both the STP and SCA of the fuel exhibited a decreasing trend owing to the higher volatility. Meanwhile, as the CTL mixing ratio increased, the ignition delay period was shortened, and the flame lift-off length decreased, whereas both the integrated natural flame luminosity and combustion duration increased. The cetane number of CTL fuel plays an important role in the occurrence of these results.

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Section: Resultsmentioning

confidence: 99%

“…Simultaneously, the increase in IP enhanced the entrainment effect of the spray and promoted droplet fragmentation and atomization. 31,32 Overall, blending CTL fuel with diesel fuel improves the spray quality under non-evaporating conditions.…”

Section: Non-evaporation Conditions (T = 300 K)mentioning

confidence: 99%