A comparative study on methanol/diesel and methanol/PODE dual fuel RCCI combustion in an automotive diesel engine

Duraisamy, Ganesh; Rangasamy, Murugan; Nagarajan, G.

doi:10.1016/j.renene.2019.06.044

Cited by 190 publications

(55 citation statements)

References 42 publications

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“…It was found that all 20 blends complied with the maximum limit of 900 kg m −3 defined in ISO 8217:2017 (DMB grade). Similar results were observed in [24,[33][34][35]-the presence of methanol in the mixtures reduced their density.…”

Section: Resultssupporting

confidence: 83%

Characterization of Biomethanol–Biodiesel–Diesel Blends as Alternative Fuel for Marine Applications

Wang

Paulauskienė

Uebe

et al. 2020

JMSE

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The ambitious new International Maritime Organization (IMO) strategy to reduce greenhouse gas emissions from ships will shape the future path towards the decarbonization of the fleet and will bring further ecological challenges. In order to replace the larger oil-based part of marine fuel with components from renewable sources, it is necessary to develop multi-component blends. In this work, biomethanol and biodiesel with two additives—dodecanol and 2-ethylhexyl nitrate—in 20 blends with marine diesel oil (MDO) were selected as alternative components to replace the pure marine diesel oil-based part of marine fuel. For this purpose, two base blends of diesel and biodiesel with and without additives were produced with biomethanol from 0 to 30% (volume basis). Of all the blends, the blends with 5% (volume basis) methanol had the best property profile in terms of density, kinematic viscosity, calorific value, cloud point, and cetane index according to the ISO 8217:2017 standard (DMB grade) in compliance with the IMO requirements for marine fuels. However, the flash point must be increased. The boiling behavior of the blends was also investigated. A cluster analysis was used to evaluate the similarity between the blends based on their different physical properties.

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Section: Resultssupporting

confidence: 83%

Characterization of Biomethanol–Biodiesel–Diesel Blends as Alternative Fuel for Marine Applications

Wang

Paulauskienė

Uebe

et al. 2020

JMSE

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“…However, due to methanol fuel's properties including the high latent heat of vaporization, easy formation of homogeneous mixture and fast combustion speed, the RCCI strategy still has the problems of poor emission at low load and rough combustion at high load in some working conditions [2]. The results show that the addition of high proportion of methanol can reduce NOx, NO and soot emissions, but NO 2 , CO, THC, formaldehyde and unburned methanol emissions increase [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of pre-injection strategy on combustion performance of methanol/diesel dual fuel engine at low load

Liu

Wang

et al. 2021

E3S Web Conf.

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In this paper, the effect of pre-injection timing on the combustion and emission performance of methanol/diesel high premixed charge compression ignition (HPCCI) combustion mode at low load was studied by three-dimensional numerical simulation. The simulation is carried out under the conditions of 1900 r/min and 25% load, and the pre-injection diesel mass remains constant and the pre-injection timing is changed under the conditions of 50% and 60% methanol ratio respectively. The results show that with the delay of pre-injection timing, the evaporation of pre-injected fuel in cylinder becomes faster, the low temperature reaction is enhanced, and the peak value of heat release rate is higher. In addition, the distribution of pre-injected diesel in cylinder and the position of impact wall are the important factors affecting the combustion and emission performance in cylinder, and when the injection timing is -35 °CA ATDC, the combustion and emission characteristics of the engine are optimal. Finally, by comparing with the traditional RCCI combustion mode, the enhancement ability of HPCCI combustion mode on methanol combustion efficiency under low load is verified and analyzed.

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“…In addition, the methanol addition caused to descend in soot intensity while the turn up in the emission of NOX. Duraisamy et al [32] conducted comparative work on methanol/polyoxymethylene dimethyl ethers and methanol/diesel dual blends upon the reactivity controlled CI burning features in an automotive engine having three-cylinder, fourstroke, and turbocharged properties under 3.4 bar brake mean effective pressure with 1500 rpm speed. The researchers were to be noted that brake specific oxides of nitrogen and soot emissions were substantially mitigated for both of the dual fuel with the increase in methanol mass fraction meanwhile CO and HC profiles were vaguely gone up.…”

Section: Introductionmentioning

confidence: 99%

Experimental assessment of a CI engine operating with 1-pentanol/diesel fuel blends

Yeşilyurt

Doğan

Erol

2020

International Journal of Automotive Science and Technology

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Alcohols have been known as influential alternatives for the utilization in the compression-ignition (CI) engines. In contrast to lower-order alcohols such as methanol-C1 and ethanol-C2, long-chain alcohols (higher-order alcohols) have a hopeful future for CI engines. Pentanol-C5 or amyl alcohol, regarding its affirmative chemical and physical properties, is a type of higher alcohol that can be obtained from biomass resources and hence it has to be evaluated as an alternating and sustainable fuel candidate in diesel engine applications. The objective of this work is to explore the engine performance and exhaust emission characteristics of a CI engine running on 1-pentanol/diesel fuel mixtures. For this aim of the experimental research, three different blends were created by infusing various ratios (10, 20, and 30% by volume) of 1-pentanol into pure diesel with implementing the splash-blending method to acquire the binary blends of Pt10, Pt20, and Pt30. The tested fuel samples were used in a single-cylinder diesel engine coupled with a generator. The influences of a next-generation alcohol addition to the diesel upon the engine performance along with exhaust emission levels of the tested engine were meticulously researched at six different engine loads (0, 0.4, 0.8, 1.2, 1.6, and 2 kW) with a stable speed (3000 rpm). The infusion of alcohol into the diesel fuel declined cetane number as well as the lower calorific value of the fuel blends. As a result of the study carried out, it was observed that the brake specific fuel consumption (BSFC) increased between 4.46-11.78% averagely as the ratio of 1-pentanol in the mixtures increased while brake thermal efficiency (BTE) and exhaust gas temperature (EGT) dropped up to 6.75% and 6.69%, respectively owing to the lesser energy content of the 1pentanol. When the test engine operating with binary blends, unburned hydrocarbon (HC) and carbon monoxide (CO) emissions were obtained to be higher than that of conventional diesel fuel due to the higher latent heat of vaporization (LHV) of 1-pentanol resulting in a cooling impact in the cylinder, leading descending trend in the efficiency of the combustion. Besides, the addition of 1pentanol to diesel caused the mitigation in smoke emission by 77.37-89.60%, carbon dioxide (CO2) by 13.06-30.83%, and nitrogen oxides (NOX) by 13.43-41.61% on an average as compared to diesel fuel. Overall, it has been shown up that 1-pentanol might be successfully utilized as an oxygenated fuel additive to diesel fuel, however in a minimum concentration of 1-pentanol, i.e., Pt10 blend has provided luminous outcomes in terms of mitigating the EGT, smoke opacity, and especiallyNOXemissions, however at the expense of boosting in the emissions of CO and HC.

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A comparative study on methanol/diesel and methanol/PODE dual fuel RCCI combustion in an automotive diesel engine

Cited by 190 publications

References 42 publications

Characterization of Biomethanol–Biodiesel–Diesel Blends as Alternative Fuel for Marine Applications

Characterization of Biomethanol–Biodiesel–Diesel Blends as Alternative Fuel for Marine Applications

Effects of pre-injection strategy on combustion performance of methanol/diesel dual fuel engine at low load

Experimental assessment of a CI engine operating with 1-pentanol/diesel fuel blends

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