Effect of pilot fuel properties on lean dual-fuel combustion and emission characteristics in a heavy-duty engine
نویسندگان
چکیده
In a dual-fuel (DF) combustion process, the ignition of main fuel plays crucial role on engine performance and emissions. present work, pilot is used to ignite gaseous methane-air mixture. Three diesel-like fuels are comparing especially cetane number (CN) aromatic content (AC). The experiments conducted in single-cylinder heavy-duty research keeping total-fuel energy constant. Lean conditions applied for port-fuel injected mixture (?CH4 = 0.52). methane provides 97% total while 3% comes from fuel. performed two pilot-fuel injection pressures speeds. results work suggest that DF consists three overlapping stages: (I) fuel, (II) burning vicinity (III) remaining It was observed directly affects peak heat-release rate (HRRpeak) during Stage I, whereas influences HRRpeak Stages II III. A with high efficiency, low slip, THC CO emissions at expense NOx An increase responsible increased Based average trends fuels, they can be rated as [high CN, AC] > [Low [High AC free].
منابع مشابه
Combustion and Exhaust Emission Characteristics of Diesel Micro-Pilot Ignited Dual-Fuel Engine
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Studies on Heavy Duty Engine Fuel Alternatives
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Teemu Sarjovaara Name of the doctoral dissertation Studies on Heavy Duty Engine Fuel Alternatives Publisher School of Engineering Unit Department of Energy Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 208/2015 Field of research Internal combustion engines Manuscript submitted 11 September 2015 D...
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ژورنال
عنوان ژورنال: Applied Energy
سال: 2021
ISSN: ['0306-2619', '1872-9118']
DOI: https://doi.org/10.1016/j.apenergy.2020.116134