Scholarlink

<p>Utilizing renewable and sustainable fuel combinations, this study investigates the influence of a premixed ratio of diethyl ether (DEE) on the combustion and tailpipe exhaust gases of a diesel engine operating in a HCCI mode. Studies are carried out at 1500-rpm engine speed and with various load circumstances. Amount of DEE premixed in Mahua oil biodiesel (MOB) is varied from 0 to 20% (on volume basis) in steps of 5. Producer gas is inducted, and hydrogen (H<sub>2</sub>) is added with a flow rate of 8 lpm fixed in the inlet manifold at optimized injection timing (IT) and injection pressure (IP) of 10<sup>0</sup>aTDC and 1000&#xa0;bar, respectively. Experimental results on HCCI engine showed that DEE addition in the biodiesel along with gaseous fuels provided comparatively reduced combustion noise. For the same PG and H<sub>2</sub> supply, biodiesel with 15% DEE enrichment under HCCI mode of operation provided 11.5% enhanced thermal efficiency, while CO, HC, smoke, NOx lowered by 18.6%, 21.2%, 35.1%, and 26.5%, respectively, than similar fuel combination without DEE addition. In addition, improved cylinder pressure and heat release rate (HRR) are noticed with 15% addition of DEE in the biodiesel-operated HCC engine. Cycle-to-cycle disparities are found to be lower at the optimized DEE addition. It is also noted that knocking is observed when DEE proportion is increased beyond 15%. However, HCCI diesel engine operation with a controlled flow rate of PG and H<sub>2</sub> is necessary, because both replace the air that leads to excessive knocking and is achieved by using high cetane number additive like DEE.</p> Graphical abstract

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of fuel additive on the combustion and emission patterns of dual-fuel HCCI mode operated on renewable and sustainable fuel combinations

  • 期刊论文

  • 发表日期：

    2026年7月2日

查看全文
  • Vijayakumar S. Totad,
  • V. S. Yaliwal,
  • N. R. Banapurmath,
  • Dhinesh Balasubramanian,
  • Utku Kale,
  • Artūras Kilikevičius

摘要

Utilizing renewable and sustainable fuel combinations, this study investigates the influence of a premixed ratio of diethyl ether (DEE) on the combustion and tailpipe exhaust gases of a diesel engine operating in a HCCI mode. Studies are carried out at 1500-rpm engine speed and with various load circumstances. Amount of DEE premixed in Mahua oil biodiesel (MOB) is varied from 0 to 20% (on volume basis) in steps of 5. Producer gas is inducted, and hydrogen (H2) is added with a flow rate of 8 lpm fixed in the inlet manifold at optimized injection timing (IT) and injection pressure (IP) of 100aTDC and 1000 bar, respectively. Experimental results on HCCI engine showed that DEE addition in the biodiesel along with gaseous fuels provided comparatively reduced combustion noise. For the same PG and H2 supply, biodiesel with 15% DEE enrichment under HCCI mode of operation provided 11.5% enhanced thermal efficiency, while CO, HC, smoke, NOx lowered by 18.6%, 21.2%, 35.1%, and 26.5%, respectively, than similar fuel combination without DEE addition. In addition, improved cylinder pressure and heat release rate (HRR) are noticed with 15% addition of DEE in the biodiesel-operated HCC engine. Cycle-to-cycle disparities are found to be lower at the optimized DEE addition. It is also noted that knocking is observed when DEE proportion is increased beyond 15%. However, HCCI diesel engine operation with a controlled flow rate of PG and H2 is necessary, because both replace the air that leads to excessive knocking and is achieved by using high cetane number additive like DEE.

Graphical abstract