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Chemical Reactivity Control of DME/Ethanol Dual Fuel Combustion Univ of Windsor
- Format:
- Book
- Conference/Event
- Author/Creator:
- Leblanc, Simon, author.
- Conference Name:
- SAE Powertrains, Fuels & Lubricants Digital Summit (2021-09-28 : Live Online, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- Advanced combustion engines dominate all automotive applications. The use of renewable fuels in place of conventional hydrocarbon fuels can minimize the carbon footprint of internal combustion engines. DME has been treated as a suitable surrogate to diesel fuel because of its high reactivity and soot-less combustion characteristics. DME fuel inherently allows for lower fuel injection pressure compared with that of diesel because of its higher compressibility. The lower energy density of DME fuel also demands a higher fuel supply rate to match the engine loads compared to diesel. Matching the fuel energy can be achieved through prolonged injection duration, larger nozzle holes. When used as a pilot fuel to control the combustion behaviour in a dual-fuel application, the fuel energy delivery rate becomes less critical allowing the use of a standard diesel common-rail injector for DME direct injection. In this work, the combustion characteristics of DME-Ethanol dual-fuel reactivity-controlled compression ignition is experimentally investigated. The high volatility of DME fuel can enhance its mixing with port injected fuel even under very early fuel injection timing, which is critical for reactivity controlled compression ignition. On the other hand, the high chemical reactivity can enhance the combustion efficiency under high ethanol ratio or heavy EGR conditions. Both factors make DME suitable as the direct injected fuel for dual fuel combustion process. The impact of DME pilot injection timing and DME/ethanol ratio on combustion characteristics is investigated under various engine load conditions. The results are then compared with diesel/ethanol dual fuel combustion, in order to discuss the chemical reactivity of direct injected fuel on dual fuel combustion process
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-1176
- Access Restriction:
- Restricted for use by site license
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