Combustion Cycle-by-Cycle Variations in a Common Rail Direct Injection Engine Fueled with Dimethyl Carbonate–Diesel Blend

Mei, Deqing; Wu, Han; Ren, Hua; Hielscher, Klaus; Baar, Roland

doi:10.1061/(asce)ey.1943-7897.0000259

Cited by 12 publications

(3 citation statements)

References 41 publications

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“…However, with decreasing PM, an increasing particle number was observed, which means a higher concentration of smaller particles. Further investigations on DMC in diesel blends were made by Murayama et al, 15 Cheung et al, 16,17 Wu et al, 18 and Rounce et al 19 with respect to gaseous and particulate emissions, and by Mei et al 20 with respect to the impact on the combustion process.…”

Section: Dmc and Mefo As Fuelsmentioning

confidence: 99%

Spray characterization of DMC and MeFo on multi-hole injectors for highly boosted DISI combustion engines

Plaß

Maliha

Kubach

et al. 2021

International Journal of Engine Research

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In the future, synthetic fuels could replace fossil fuels to minimize the CO2 emissions of combustion engines. Dimethyl carbonate (DMC) and methyl formate (MeFo) represent not only possible synthetic fuels but, due to their oxygen content, also have properties to reduce the pollutant emissions. For a good combustion process, the spray targeting and evaporation properties are important. Due to the less known injection behavior of DMC and MeFo, the spray characteristics were examined in a pressure chamber. The penetration depth, projected spray area, and spray angle were investigated at injection pressures of 100 and 200 bar, chamber pressures of 1 and 2.5 bar, and a temperature variation of up to 90°C for two different injector spray angles and flow rates in comparison with gasoline E5. The spray was recorded with a high-speed camera in a constant-volume chamber with a N2 environment. Both fuels showed a faster evaporation than E5 even with a higher injection mass due to their lower LHV. MeFo showed extreme spray collapse and flash boiling effects, which lead to even faster evaporation rates and higher penetration velocities.

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Section: Dmc and Mefo As Fuelsmentioning

confidence: 99%

Spray characterization of DMC and MeFo on multi-hole injectors for highly boosted DISI combustion engines

Plaß

Maliha

Kubach

et al. 2021

International Journal of Engine Research

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“…They pointed out that the oxygen in D10 plays an important role in reducing PM emissions, and there is a range that balances NO x and PM emissions. Subsequently, Mei et al 165 further studied the combustion variations of D10 fuel, and found that the cyclical coefficients of variation (COVs) of IMEP, peak pressure, and initial 10% combustion duration are all lower than 2%, and the COVs of D10 fuel are greater than that of diesel.…”

Section: Application Of Ether and Ester Fuels In Ic Enginesmentioning

confidence: 99%

Ethers and esters as alternative fuels for internal combustion engine: A review

Hua

2021

International Journal of Engine Research

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Ether and ester fuels can work in the existing internal combustion (IC) engine with some important advantages. This work comprehensively reviews and summarizes the literatures on ether fuels represented by DME, DEE, DBE, DGM, and DMM, and ester fuels represented by DMC and biodiesel from three aspects of properties, production and engine application, so as to prove their feasibility and prospects as alternative fuels for compression ignition (CI) and spark ignition (SI) engines. These studies cover the effects of ether and ester fuels applied in the form of single fuel, mixed fuel, dual-fuel, and multi-fuel on engine performance, combustion and emission characteristics. The evaluation indexes mainly include torque, power, BTE, BSFC, ignition delay, heat release rate, pressure rise rate, combustion duration, exhaust gas temperature, CO, HC, NOx, PM, and smoke. The results show that ethers and esters have varying degrees of impact on engine performance, combustion and emissions. They can basically improve the thermal efficiency of the engine and reduce particulate emissions, but their effects on power, fuel consumption, combustion process, and CO, HC, and NOx emissions are uncertain, which is due to the coupling of operating conditions, fuel molecular structure, in-cylinder environment and application methods. By changing the injection strategy, adjusting the EGR rate, adopting a new combustion mode, adding improvers or synergizing multiple fuels, adverse effects can be avoided and the benefits of oxygenated fuel can be maximized. Finally, some challenges faced by alternative fuels and future research directions are analyzed.

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“…Oxygenate fuels, such as alcohols and ethers, are known for PM production reduction as they lack C-C bonds [69]. Dimethyl carbonate (DMC) and methyl formate (MeFo) are knock resistant (with high RON) esters which are suitable for direct-injection (DI) high-compression Spark-Ignition (SI) engines [70,71]. These fuels also offer the potential for significantly PM production reduction of SI-DI engines, which is a beneficial surplus.…”

Section: Other Oxygenate Fuelsmentioning

confidence: 99%

Alternative Fuels for Internal Combustion Engines

Martins

Brito

2020

Energies

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The recent transport electrification trend is pushing governments to limit the future use of Internal Combustion Engines (ICEs). However, the rationale for this strong limitation is frequently not sufficiently addressed or justified. The problem does not seem to lie within the engines nor with the combustion by themselves but seemingly, rather with the rise in greenhouse gases (GHG), namely CO2, rejected to the atmosphere. However, it is frequent that the distinction between fossil CO2 and renewable CO2 production is not made, or even between CO2 emissions and pollutant emissions. The present revision paper discusses and introduces different alternative fuels that can be burned in IC Engines and would eliminate, or substantially reduce the emission of fossil CO2 into the atmosphere. These may be non-carbon fuels such as hydrogen or ammonia, or biofuels such as alcohols, ethers or esters, including synthetic fuels. There are also other types of fuels that may be used, such as those based on turpentine or even glycerin which could maintain ICEs as a valuable option for transportation.

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Combustion Cycle-by-Cycle Variations in a Common Rail Direct Injection Engine Fueled with Dimethyl Carbonate–Diesel Blend

Cited by 12 publications

References 41 publications

Spray characterization of DMC and MeFo on multi-hole injectors for highly boosted DISI combustion engines

Spray characterization of DMC and MeFo on multi-hole injectors for highly boosted DISI combustion engines

Ethers and esters as alternative fuels for internal combustion engine: A review

Alternative Fuels for Internal Combustion Engines

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