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<p>Low-carbon fuel has less carbon among fuel components, and zero-carbon fuel means there is no carbon content. Consequently, low-and zero-carbon fuels have the great advantage of reducing carbon dioxide emissions during combustion process, unlike conventional gasoline fuels. However, the physical properties of low-and zero-carbon fuels differ from those of conventional gasoline fuels, leading to variations in the spray development characteristics. Therefore, research on spray development characteristics of low-and zero-carbon fuels is needed. This study investigated the spray development characteristics of conventional fuel (Gasoline), low-carbon fuels (LPG, Methanol) and zero-carbon fuel (Ammonia) as a function of ambient temperature and pressure using a constant volume chamber (CVC). At an ambient pressure of 1&#xa0;bar, ammonia exhibits a faster increase in spray tip penetration in the early stage compared to the other fuels due to its low viscosity. However, because it falls under flare flash boiling conditions, spray collapse occurs as the spray develops. As a result, the spray plumes merge, leading to a region where a rapid increase in spray tip penetration is observed. At an ambient pressure of 10&#xa0;bar, all fuels fall under non-flash boiling conditions. Therefore, spray collapse does not occur, and the sprays develop while maintaining three distinct plumes.</p>

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Spray Development Characteristics of Low-and Zero-Carbon Fuels in a Constant Volume Chamber

  • 期刊论文

  • 发表日期：

    2026年7月21日

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  • Seungho Yang,
  • Young Soo Yu,
  • Sungwook Park

摘要

Low-carbon fuel has less carbon among fuel components, and zero-carbon fuel means there is no carbon content. Consequently, low-and zero-carbon fuels have the great advantage of reducing carbon dioxide emissions during combustion process, unlike conventional gasoline fuels. However, the physical properties of low-and zero-carbon fuels differ from those of conventional gasoline fuels, leading to variations in the spray development characteristics. Therefore, research on spray development characteristics of low-and zero-carbon fuels is needed. This study investigated the spray development characteristics of conventional fuel (Gasoline), low-carbon fuels (LPG, Methanol) and zero-carbon fuel (Ammonia) as a function of ambient temperature and pressure using a constant volume chamber (CVC). At an ambient pressure of 1 bar, ammonia exhibits a faster increase in spray tip penetration in the early stage compared to the other fuels due to its low viscosity. However, because it falls under flare flash boiling conditions, spray collapse occurs as the spray develops. As a result, the spray plumes merge, leading to a region where a rapid increase in spray tip penetration is observed. At an ambient pressure of 10 bar, all fuels fall under non-flash boiling conditions. Therefore, spray collapse does not occur, and the sprays develop while maintaining three distinct plumes.