Combustion and emissions of a DI diesel engine fuelled with diesel-oxygenate blends

Ren, Yang; Huang, Zuohua; Miao, Haiyan; Di, Yage; Jiang, Deming; Zeng, Ke; Liu, Bing; Wang, Xibin

doi:10.1016/j.fuel.2008.02.017

Cited by 302 publications

(117 citation statements)

References 13 publications

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“…(Table 4 Figure 9 shows that smoke emissions increasesd with brake power. It was observed that 20% JOME and 20% FOME showed lower value of smoke compared to diesel due to higher oxygen content and higher cetane index, which improved the combustion process [52]. By comparing 20% FOME and 20% JOME, 20% FOME showed higher value of smoke due to higher kinematic viscosity and density, which affects the volatilization and atomization process of the fuel particles [53].…”

Section: Nox Emissionmentioning

confidence: 96%

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

Bhaskar¹,

Sendilvelan²,

Muthu³

et al. 2016

J. MECH. ENG. SCI.

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In this work, biodiesel obtained from the transesterfication of Jatropha seeds and Fish wastes is used as an alternative fuel to diesel in stationary single cylinder diesel engines. The biodiesel obtained has good ignition ability due to its relatively high cetane number compared to that of conventional diesel fuel. The performance, combustion and emission tests using Jatropha Oil Methyl Ester (JOME), Fish Oil Methyl Ester (FOME) and their blends (20% JOME and 20% FOME) with diesel were carried out at constant speed and variable loads condition. The results showed that both blends could be used as fuels for diesel engine without any major modification on the engine. Carbon monoxide (CO), UBHC and smoke emissions were observed to be lesser at all loads for both the blends compared to diesel fuel, while NOx emission was slightly higher. JOME blend was found to be better than FOME blend.

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Section: Nox Emissionmentioning

confidence: 96%

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

Bhaskar¹,

Sendilvelan²,

Muthu³

et al. 2016

J. MECH. ENG. SCI.

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“…The crank angle position was measured by encoder (h-25). The in-cylinder pressure was used to calculate heat release rate which was determined by the adiabatic energy balance (Ren et al, 2008;Chang et al, 2014;). Thermodynamic model is applied to calculate heat release rate, the model neglects the leakage through the cylinder, and thus the energy conservation in cylinder.…”

Section: Ef = Cv/ptmentioning

confidence: 99%

Energy Saving and Pollution Reduction by Adding Water Containing Iso-Butanol and Iso-Propyl Alcohol in a Diesel Engine

Tsai

Lin

Mwangi

et al. 2015

Aerosol Air Qual. Res.

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In this study, two diesel blends with different iso-butanol and isopropyl alcohol ratios, 5% iso-propanol with 15% isobutanol and 1% iso-propanol and 19% iso-butanol, were used and compared against the performance of petroleum diesel as a base fuel. Additionally, water addition strategy was included for further comparison. Brake specific fuel consumption (BSFC) increased with increasing ratios of iso-butanol and water fractions, since the heating value decreased resulting in more fuel being combusted to maintain the same power output. On the other hand, brake thermal efficiency (BTE) increased with increasing water content. Specifically, P5B15W1 had a higher BTE than regular diesel at low engine loads (12 kW and 25 kW-LS). Compared to the regular diesel, the results show that in-cylinder pressures slightly increased while HRR had longer ignition delay with higher iso-butanol and water content. For the two different ratios of blended diesel, P1B19 registered NO x emission reductions factors by about 12-35% compared regular diesel due to its low heating value and combustion temperature, while those for P5B15 were reduced 8-33% in comparison to regular diesel. For CO and PM emission factors, P5B15 had better performance than P1B19 which showed 13-37% and 37-50% lower than regular diesel, respectively. However, HC emission factors were all greater than those of regular diesel with the highest increase being from P1B19. This diesel blend, P1B19 showed 6-30% and 3-10% higher HC emission factors than regular diesel and P5B15, respectively. For water containing blends, NO x emission factors decreased with an increase in water content. The trends for CO and PM emission factors were similar to those of non-water containing diesel blends. P5B15W1 had largest decrease which showed 5-17% and 7-26% lower CO and PM than regular diesel, respectively. Notably, the CO and PM emission factors are all higher than non-water contain blended diesel. As for HC, P5B15W1 had an increase of about 26-51%. Moreover, the total-PAHs emission factors between two different ratios of blended diesel were compared whereby P5B15 had 12-22% lower than P1B19. Besides, total-BaPeq emission factors are similar to totalPAHs emission, which P5B15 had largest reduction by 28-44%. In summary, P5B15 would be a best choice in terms of PM reduction, while the best choice for NOx control would be P1B19W0.5 blend. Ultimately, further economic feasibility studies are recommended for an overall performance evaluation.

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“…Kozak et al [3] tested 11 different oxygenated fuels and found that DEC, dimethyl carbonate and diethyl maleate gave the greatest reduction in particulate emissions without adversely affecting NOx emissions. Ren et al [6] found that a DEC-diesel blend reduced the production of smoke emissions by about 35% compared to neat diesel fuel in a direct injection diesel engine.…”

Section: Introductionmentioning

confidence: 99%

An experimental and modeling study of diethyl carbonate oxidation

Nakamura

Curran

Córdoba

et al. 2015

Combustion and Flame

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Diethyl carbonate (DEC) is an attractive biofuel that can be used to displace petroleum-derived diesel fuel, thereby reducing CO 2 and particulate emissions from diesel engines. A better understanding of DEC combustion characteristics is needed to facilitate its use in internal combustion engines. Towards this goal, ignition delay times for DEC were measured at conditions relevant to internal combustion engines using a rapid compression machine (RCM) and a shock tube. The experimental conditions investigated covered a wide range of temperatures (660-1300 K), a pressure of 30 bar, and equivalence ratios of 0.5, 1.0 and 2.0 in air.To provide further understanding of the intermediates formed in DEC oxidation, species concentrations were measured in a jet-stirred reactor at 10 atm over a temperature range of 500-1200 K and at equivalence ratios of 0.5, 1.0 and 2.0. These experimental measurements were used to aid the development and validation of a chemical kinetic model for DEC.The experimental results for ignition in the RCM showed near negative temperature coefficient (NTC) behavior. Six-membered alkylperoxy radical (R 2 ) isomerizations are conventionally thought to initiate low-temperature branching reactions responsible for NTC behavior, but DEC has no such possible 6-and 7-membered ring isomerizations. However, its molecular structure allows for 5-, 8-and 9-membered ring R 2 isomerizations. To provide accurate rate constants for these ring structures, ab initio computations for R 2 QOOH isomerization reactions were performed. These new R 2 isomerization rate constants have been implemented in a chemical kinetic model for DEC oxidation. The model simulations have been compared with ignition delay times measured in the RCM near the NTC region. Results of the 3 simulation were also compared with experimental results for ignition in the high-temperature region and for species concentrations in the jet-stirred reactor. Chemical kinetic insights into the oxidation of DEC were made using these experimental and modeling results.

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Combustion and emissions of a DI diesel engine fuelled with diesel-oxygenate blends

Cited by 302 publications

References 13 publications

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

Energy Saving and Pollution Reduction by Adding Water Containing Iso-Butanol and Iso-Propyl Alcohol in a Diesel Engine

An experimental and modeling study of diethyl carbonate oxidation

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