Hydrogen‐Enriched Tri‐Fuel Combustion for Low‐Carbon Engines at Medium Engine Load: A Comprehensive CFD Analysis
中エンジン負荷における低炭素エンジンのための水素添加三元燃料燃焼：包括的CFD解析 (AI 翻訳)
Md.Ifthaker Alam, Tafsirul Hassan, Md Imtiaz Hossen, Md. Shaib Hossain, Bandhon Saha Bijoy
🤖 gxceed AI 要約
日本語
本研究は、ディーゼル-CH4-H2三元燃料エンジンにおける水素添加が性能・燃焼・排出に与える影響をCFD解析。60%水素添加時に最大圧力20%上昇、CO・スス排出95%削減、NOxは31%増加。低炭素輸送への水素利用可能性を示す。
English
This study numerically investigates hydrogen addition to diesel-CH4 tri-fuel engines using CFD. Results show 20% higher peak pressure, 61% CO and 95% soot reduction, but 31% NOx increase at 60% hydrogen share. Demonstrates hydrogen's potential for low-carbon transport.
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
日本は水素基本戦略で水素燃焼技術を推進。本論文の三元燃料方式は、既存ディーゼルエンジンの低炭素化手法として応用可能性があり、日本国内の水素エンジン研究への示唆を含む。
In the global GX context
Globally, hydrogen combustion engines are gaining attention as a decarbonization pathway. This tri-fuel concept offers a transition approach for existing diesel fleets, relevant to global efforts in reducing transport emissions.
👥 読者別の含意
🔬研究者:Provides detailed CFD benchmark for hydrogen-enriched tri-fuel combustion, useful for engine modeling and optimization studies.
🏢実務担当者:Offers quantitative insights on hydrogen addition effects on emissions and efficiency, informing engine retrofit or design decisions.
🏛政策担当者:Supports policy on hydrogen as a transport fuel by showing feasibility and trade-offs (NOx vs. CO/soot reductions).
📄 Abstract（原文）
ABSTRACT The global commitment to achieve net‐zero carbon emissions by 2050 has intensified the growing demand for sustainable and low‐carbon energy systems. Inspired by this vision, hydrogen (H 2 ) has attracted massive attention as a clean and highly reactive alternative fuel in this era of sustainable energy. Although H 2 ‐assisted dual‐fuel combustion has been widely investigated, very little research has been conducted on the H 2 ‐assisted tri‐fuel mode. Accordingly, a numerical analysis of this tri‐fuel concept is documented in this paper, where the effects of various hydrogen energy shares (HESs) on the performance, combustion, and emissions of a diesel‐CH 4 ‐H 2 fueled engine are investigated. The ANSYS Forte CFD software, linked with the ANSYS CHEMKIN tool, is employed for this numerical investigation. The results indicate that H 2 addition improves in‐cylinder fuel‐air mixing and, as a result, more uniform combustion occurs with lower emission levels. The in‐cylinder maximum pressure rises from 8.6 MPa for the pure diesel case to 10.3 MPa at the 60% HES case. This is an improvement of around 20%. The maximum in‐cylinder temperature also increases from 1437 K to 1649 K, which represents a 15% rise. The ignition timing also advances from about TDC to 2.3 CA bTDC. The maximum chemical heat release rate increases from 500 J/°CA for the pure diesel case to 1400 J/°CA in the 60% HES case. The 10%–90% heat‐release duration shortens by nearly half, and the indicated specific fuel consumption lowers by 26%. These findings suggest more rapid and complete combustion with the addition of H 2 . At this highest HES level, carbon monoxide and soot emissions measured at the exhaust valve opening reduce by almost 61% and 95%, respectively, compared to the pure diesel case. However, NO x emissions show a 31% rise in this case due to higher combustion temperatures. Unburned hydrocarbon and volatile organic compound emissions initially increase but decrease at higher HES levels.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/ese3.70615first seen 2026-07-30 05:28:45
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