Spray Development Characteristics of Low-and Zero-Carbon Fuels in a Constant Volume Chamber
定容容器における低炭素およびゼロカーボン燃料の噴霧発達特性 (AI 翻訳)
Seungho Yang, Young Soo Yu, Sungwook Park
🤖 gxceed AI 要約
日本語
本研究では、定容容器を用いて、ガソリン、LPG、メタノール（低炭素燃料）、アンモニア（ゼロカーボン燃料）の噴霧発達特性を、雰囲気温度と圧力の関数として調べた。アンモニアは低粘度により初期の噴霧先端到達距離が速いが、フレアフラッシュ沸騰条件下では噴霧が崩壊する。高圧下では非フラッシュ沸騰となり、噴霧は三つのプルームを維持する。この結果は、ゼロカーボン燃料の燃焼特性理解に寄与する。
English
This study investigates spray development characteristics of low-carbon (LPG, Methanol) and zero-carbon (Ammonia) fuels compared to gasoline in a constant volume chamber under varying ambient temperature and pressure. Ammonia shows faster initial spray tip penetration due to low viscosity but experiences spray collapse under flare flash boiling conditions. At high pressure, non-flash boiling conditions prevail and sprays develop with three distinct plumes. The findings contribute to understanding combustion behavior of alternative fuels for decarbonization.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
韓国の研究機関による低・ゼロカーボン燃料の噴霧特性研究であり、日本のGX政策（水素・アンモニアサプライチェーン構築）に関連する。特にアンモニアは、発電や船舶燃料として日本で注目されており、基礎的な燃焼データは実用化に有用。ただし、本論文は噴霧現象に特化しており、直接的な政策提言や経済分析は含まない。
In the global GX context
This South Korean experimental study on spray characteristics of low- and zero-carbon fuels provides fundamental data relevant to decarbonizing internal combustion engines and marine transport. While not directly addressing disclosure frameworks or policy, it supports the technical basis for adopting ammonia and methanol as alternative fuels, which is relevant to global energy transition efforts.
👥 読者別の含意
🔬研究者:Provides baseline spray data for ammonia and methanol under varying conditions, useful for combustion modeling and fuel injection system design.
🏢実務担当者:Engineers in automotive or marine sectors developing fuel injection systems for low/zero-carbon fuels can use these findings to optimize spray formation.
📄 Abstract（原文）
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.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s12239-026-00517-8first seen 2026-07-23 05:15:33
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