Improving the lean burn performance of a high compression ratio methanol engine by multiple-injection

Duan, Qimeng; Li, Tao; Liu, Dong; Yin, Xiaojun; Zeng, Ke; Wang, Long

doi:10.1016/j.applthermaleng.2023.121481

Applied Thermal Engineering

2024

DOI: 10.1016/j.applthermaleng.2023.121481

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Improving the lean burn performance of a high compression ratio methanol engine by multiple-injection

Qimeng Duan,

Tao Li,

Dong Liu

et al.

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Cited by 10 publications

References 23 publications

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Assessment of the Effects of Intake Temperature and Injector Structure on the Combustion Characteristics of Direct‐Injection Spark‐Ignition Methanol Engines

Yang,

Wei,

Zhao

et al. 2024

Energy Tech

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In this article, to address the issues of slower droplet evaporation and fuel mixing inhomogeneity caused by the high latent heat of vaporization of methanol, the effects of the number of nozzle holes and spray cone angle (θsca) on the combustion characteristics of a direct‐injection spark‐ignition methanol engine are numerically investigated at different intake temperatures (Tint) under constant injection pressures. In the results, it is indicated that the maximum‐indicated thermal efficiency (ITE) is 48.01% at 8 holes and a Tint of 328 K. Although the ITE at 298 K with 8 holes is 1.42% lower than 328 K, NOx emissions and ringing intensity (RI) are reduced by 90.46% and 90.61%, respectively. Simultaneously, emissions of CO, hydrocarbon (HC), Soot, unburned methanol, and formaldehyde remain at a low level. Second, there exists an optimal θsca at different holes, thus obtaining the best fuel economy and emissions. The maximum ITE is 48.1% at 8 holes and a θsca of 26°. Finally, under the same energy input and parameter, compared with the diesel engine of the optimal start of injection, the ITE of the optimized methanol engine is increased by 1.65%, and the RI, NOx, HC, CO, and Soot emissions are reduced by 98.58%, 77.85%, 99.35%, 85.71%, and 78.38%, respectively.

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Assessment of the Effects of Intake Temperature and Injector Structure on the Combustion Characteristics of Direct‐Injection Spark‐Ignition Methanol Engines

Yang,

Wei,

Zhao

et al. 2024

Energy Tech

View full text Add to dashboard Cite

show abstract

Numerical optimization of injector hole arrangement for marine methanol/diesel direct dual fuel stratification engines

Jiang,

Sun,

Guo

et al. 2024

Applied Thermal Engineering

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Experimental study for the effect of spark ignition on methanol/PODE dual fuel combustion under medium and low loads

Wang,

Su,

et al. 2024

Energy

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Improving the lean burn performance of a high compression ratio methanol engine by multiple-injection

Cited by 10 publications

References 23 publications

Assessment of the Effects of Intake Temperature and Injector Structure on the Combustion Characteristics of Direct‐Injection Spark‐Ignition Methanol Engines

Assessment of the Effects of Intake Temperature and Injector Structure on the Combustion Characteristics of Direct‐Injection Spark‐Ignition Methanol Engines

Numerical optimization of injector hole arrangement for marine methanol/diesel direct dual fuel stratification engines

Experimental study for the effect of spark ignition on methanol/PODE dual fuel combustion under medium and low loads

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