Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot
| Autor: | Ville Vuorinen, Zeeshan Ahmad, Qiang Cheng, Ossi Kaario, Martti Larmi |
|---|---|
| Přispěvatelé: | Department of Mechanical Engineering, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermal efficiency
Materials science Hydrogen 020209 energy Nuclear engineering Fuel properties Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Combustion 7. Clean energy Methane law.invention Diesel fuel chemistry.chemical_compound law 0502 economics and business 0202 electrical engineering electronic engineering information engineering 050207 economics Renewable Energy Sustainability and the Environment 05 social sciences Cetane number Tri-fuel combustion Condensed Matter Physics Ignition system Fuel Technology Aromatic content chemistry Volume (thermodynamics) Pilot fuel |
| Popis: | Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024 ). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkulunsäätio under application no. 2020050 and 20210073 , respectively. Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkuluns??tio under application no. 2020050 and 20210073, respectively. Publisher Copyright: © 2021 The Author(s) The present work investigates the effect of pilot fuel properties on TF combustion using premixed methane-hydrogen-air (CH4-H2-air) mixtures ignited by a small amount of diesel pilot. Especially, we are investigating the effect of the cetane number (CN) and aromatic content (AC) on TF combustion in a single-cylinder compression ignition (CI) engine at varying charge air temperatures (Tair = 25 °C, 40 °C, 55 °C) and H2 volume fractions (MH2 = 10%, 20%, 40% and 60%) at lean premixed charge mixture conditions (equivalence ratio φ = 0.5). The novelty and main findings of the work consist of the following features: 1) besides the effect of H2 concentration and charge-air temperature, pilot fuel properties also play a crucial role in TF combustion, even a small amount of diesel pilot could dramatically affect the engine performance and combustion stability, 2) the CN and AC are the key factors affect the ignition delay time (IDT) and indicated thermal efficiency (ITE), 3) the in-cylinder pressure oscillation analysis based on a novel Superlets (SL) approach indicates that pilot fuel properties are important to the combustion states and combustion stability. |
| Databáze: | OpenAIRE |
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