Efficiency and Emissions Characteristics of an HCCl Engine Fueled by Primary Reference Fuels

Show simple item record

dc.contributor.author Yang, Ruinan
dc.contributor.author Hariharan, Deivanayagam
dc.contributor.author Zilg, Steven
dc.contributor.author Mamalis, Sotirios
dc.contributor.author Lawler, Benjamin
dc.contributor.other State University of New York (SUNY) System
dc.contributor.other State University of New York (SUNY) Stony Brook
dc.contributor.other University of Alabama Tuscaloosa
dc.date.accessioned 2022-01-27T19:03:32Z
dc.date.available 2022-01-27T19:03:32Z
dc.date.issued 2018
dc.identifier.citation Yang, R., Hariharan, D., Zilg, S., Lawler, B. et al., "Efficiency and Emissions Characteristics of an HCCI Engine Fueled by Primary Reference Fuels," SAE Int. J. Engines 11(6):993-1006, 2018, https://doi.org/10.4271/2018-01-1255.
dc.identifier.uri http://ir.ua.edu/handle/123456789/8246
dc.description.abstract This article investigates the effects of various primary reference fuel (PRF) blends, compression ratios, and intake temperatures on the thermodynamics and performance of homogeneous charge compression ignition (HCCl) combustion in a Cooperative Fuels Research (CFR) engine. Combustion phasing was kept constant at a CA50 phasing of 5 degrees after top dead center (aTDC) and the equivalence ratio was kept constant at 0.3. Meanwhile, the compression ratio varied from 8:1 to 15:1 as the PRF blends ranged from pure n-heptane to nearly pure isooctane. The intake temperature was used to match CA50 phasing. In addition to the experimental results, a GT-Power model was constructed to simulate the experimental engine and the model was validated against the experimental data. The GT-Power model and simulation results were used to help analyze the energy flows and thermodynamic conditions tested in the experiment. The results indicate that an increase of compression ratio causes higher thermal efficiency and fuel conversion efficiency; however, at the same compression ratio, an increase in PRF number results in lower efficiency due to the required increase in intake temperature and the associated decrease in charge density. While the efficiency does increase with compression ratio, the results show that the effect of increased expansion work is partially offset by higher heat transfer losses and lower ratios of specific heats at higher compression ratios. The results indicate that the maximum pressure rise rate (MPRR) in HCCl significantly increases with compression ratio. Combustion efficiency shows a strong trend with peak temperature regardless of the PRF number or compression ratio, indicating that the CO-to-CO2 conversion is independent of the parent fuel chemistry in the case of the PRFs, whereas the unburned hydrocarbon emissions showed the opposite trend, depending mostly on the parent fuel's autoignition tendency. en_US
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher SAE International
dc.subject HCCl
dc.subject Primary Reference Fuel
dc.subject Efficiency
dc.subject Emissions
dc.subject JATROPHA OIL
dc.subject HEAT RELEASE
dc.subject DIESEL
dc.subject PERFORMANCE
dc.subject BLENDS
dc.subject RATIO
dc.subject Transportation Science & Technology
dc.subject Transportation
dc.title Efficiency and Emissions Characteristics of an HCCl Engine Fueled by Primary Reference Fuels en_US
dc.type text
dc.type Article
dc.identifier.doi 10.4271/2018-01-1255
dc.identifier.orcid https://orcid.org/0000-0002-6494-4102

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account