Effects of Fuel Properties on Combustion and Emissions of a Direct-Injection Diesel Engine

Yang, Changlin; Kidoguchi, Yoshiyuki; Kato, Ryoji; Miwa, Kei

doi:10.5988/jime1966.34.798

Cited by 2 publications

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“…The cetane number of a fuel is inversely related to its ignition delay . Diesel fuels with higher cetane numbers (shorter ignition delays) allow for more efficient fuel consumption, decreased emissions, and reduced engine knocking and wear. − Previous work on alkyl adamantanes , revealed that this class of fuels exhibit derived cetane numbers of >40, regardless of the length of the alkyl chain (C 2 –C 5 ) or the degree of substitution, including the tetra-substituted diamondoid ETMA. These results suggested that the alkyl diamondoids synthesized in the current work would similarly possess cetane numbers high enough for efficient combustion in a conventional diesel engine.…”

Section: Resultsmentioning

confidence: 99%

High Density Alkyl Diamondoid Fuels Synthesized by Catalytic Cracking of Alkanes in the Presence of Adamantane

2018

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Alkyl diamondoid fuel mixtures have been prepared under moderate conditions by AlBr3 catalyzed cracking of nonane and heptane in the presence of adamantane. The fuel mixture prepared with heptane as the alkyl source (HA) contains primarily 1-ethyl-3-methyl adamantane and 1-propyladamantane, while the mixture prepared from nonane (NA) contains primarily C13–C15 alkyl diamondoids. Both fuel mixtures exhibit densities greater than 0.9 g/mL and volumetric net heats of combustion approximately 10 and 6% higher than conventional jet and diesel fuels, respectively. The structural diversity of the fuel blends and presence of multiple branch sites lead to lower viscosities compared to pure alkyl diamondoid fuels. The lower molecular weight blend, HA, exhibits a 40 °C kinematic viscosity of 3.22 mm2 s–1, well within the specification for diesel fuel, and both blends have derived cetane numbers of >42, suggesting that they can be used directly in conventional diesel engines.

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Section: Resultsmentioning

confidence: 99%

High Density Alkyl Diamondoid Fuels Synthesized by Catalytic Cracking of Alkanes in the Presence of Adamantane

2018

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“…The hydrocarbon composition of fuels such as aromatic and olefin content affects the cetane number. The general trend is that the olefins and aromatics have low cetane numbers [19,[24][25][26][27].…”

Section: Fuel Characterizationmentioning

confidence: 99%

Experimental Combustion Analysis of a Small Size Diesel Engine Fueled With Tire Derived Fuel/Diesel Fuel Blends

Doğan

Aydın

2022

International Journal of Automotive Science and Technology

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Producing Tire Derived Fuel (TDF) from scrap tyres not only eliminates the problem of waste disposal but also provides a meaningful potential to minimize the usage of natural sources to obtain useful energy. From this point of view, the scrap tires were converted into raw TDF by using vacuum pyrolysis at an indus-trial-scale tire recycling plant. The raw TDF was subjected to a refining and desulfurization process to improve its fuel properties before engine tests. The re-fined TDF and reference diesel fuel (No.2 Diesel) were blended in various per-centages on a volume base and tested in a single cylinder naturally aspirated DI diesel engine to clarify its detailed combustion characteristics. The experimental test results point out that the TDF fuel blends exhibit a slightly longer ignition delay period and longer premixed combustion duration, while the TDF fuel blends show shorter diffusive combustion and a shorter total combustion dura-tion when compared to those of No.2 Diesel. Meanwhile, TDF blends display a higher maximum value of heat release rate (HRRmax), a higher peak value of in-cylinder pressure (Pmax) and a higher rate of pressure rise (dP/dCAD). In addition, combustion events occur late, and the centre of combustion moves away from the top dead centre into expansion stroke in case of TDF blends.

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Effects of Fuel Properties on Combustion and Emissions of a Direct-Injection Diesel Engine

Cited by 2 publications

References 0 publications

High Density Alkyl Diamondoid Fuels Synthesized by Catalytic Cracking of Alkanes in the Presence of Adamantane

High Density Alkyl Diamondoid Fuels Synthesized by Catalytic Cracking of Alkanes in the Presence of Adamantane

Experimental Combustion Analysis of a Small Size Diesel Engine Fueled With Tire Derived Fuel/Diesel Fuel Blends

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