Effect of ethanol-gasoline blends on SI engine performance and emissions

Mohammed, Mortadha. K.; Balla, Hyder H.; Al-Dulaimi, Zaid Maan H.; Kareem, Zaid S.; Al-Zuhairy, Mudhaffar S.

doi:10.1016/j.csite.2021.100891

Cited by 108 publications

(43 citation statements)

References 10 publications

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“…To solve the cold-start problem of pure ethanol SI engines, researchers used ethanol–gasoline blends as the fuel of SI engines. According to the experimental results of Al-Hasan and Yücesu et al, ethanol–gasoline blends could improve the torque and power of SI engines and get better thermal efficiency. , Balla et al found that the increase of ethanol in ethanol–gasoline blends would increase the antiknock property of blends, and E40 had a higher thermal efficiency than gasoline and pure ethanol . In another research by Yücesu et al, they found that ethanol–gasoline blends could reduce CO, HC, and NO x emissions from SI engines .…”

Section: Introductionmentioning

confidence: 99%

Effects of Water Ratio in Hydrous Ethanol on the Combustion and Emissions of a Hydrous Ethanol/Gasoline Combined Injection Engine under Different Excess Air Ratios

Sun

et al. 2021

ACS Omega

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Ethanol is usually combined with gasoline to manufacture ethanol−gasoline with excellent combustion characteristics. However, extracting water from hydrous ethanol to manufacture anhydrous ethanol consumed much energy, which increases the production cost of ethanol− gasoline. Many researchers have studied the combustion and emissions of hydrous ethanol−gasoline to explore the application of hydrous ethanol− gasoline as the fuel for spark-ignition engines. Most previous studies changed the hydrous ethanol ratio with fixed purity in hydrous ethanol− gasoline to study the effects of hydrous ethanol. Different from previous studies, this paper studied the effects of water ratio (Wr) in hydrous ethanol on the combustion and emissions of a hydrous ethanol/gasoline combined injection engine under different excess air ratio (λ) values. The ratios of ethanol and gasoline keep constant, while the purity of hydrous ethanol changes during the research. The experiment adopted the combined injection mode with hydrous ethanol direct injection plus gasoline port injection; the direct injection ratio was 20%. The experiment set three λ (0.9, 1, and 1.2) and five Wrs (0, 5, 10, 15, and 20%). The test engine's speed was 1500 rpm, and the intake manifold absolute pressure was 48 kPa. Results showed that water inhibited combustion, prolonged CA 0-10 and CA 10-90, reduced P max and T max , and delayed AP max ; larger λ made the deterioration on combustion more obvious, and the smaller λ had a larger tolerance to water. Water could increase torque and improve emissions, but different parameters corresponded to different optimal Wrs. For torque, the optimal Wr was 5%. For HC emissions, the optimal Wr was 0%; for CO emissions, the optimal value was 5%; and for NO x emissions, the best value was 20%. The best Wr was 10% for particle number (PN) emissions. Under the optimal Wr condition, when λ values were 0.9, 1, and 1.2, compared with pure gasoline, the torque increased by 7.

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Section: Introductionmentioning

confidence: 99%

Effects of Water Ratio in Hydrous Ethanol on the Combustion and Emissions of a Hydrous Ethanol/Gasoline Combined Injection Engine under Different Excess Air Ratios

Sun

et al. 2021

ACS Omega

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“…Moreover, it requires a long process with a lot of equipment.Bioethanol is one type of alternative fuel that is converted from bioenergy plants and biomass [10], and with a high octane number, it has the opportunity to be used as an alternative to gasoline [11]. In addition, bioethanol has greenhouse gas emissions and lower production costs, as well as a more profitable future evolution that makes bioethanol and its mixtures have great potential to be used as renewable fuels, especially in ICE [12]. On the other hand, a lot of research has been done on the production of bioethanol and its application to machinery [13], [14] and it was found that ethanol fuel is suitable for internal combustion engines but is more focused on diesel engines [15]- [17].…”

Section: Introductionmentioning

confidence: 99%

Gasohol Engine Performance with Various Ignition Timing

Nanlohy

Arief

Riupassa

et al. 2022

JMEST

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Experimental research has been conducted on the effect of ignition timings on the characteristics and performance of gasohol engines such as power, torque, specific fuel consumption, and thermal efficiency. The fuel used in this research is pure gasoline and a mixture of 50% bioethanol (BE50). The results show that the ignition timing that gives the maximum effect occurs at the top and bottom dead points of 9 degrees for gasoline and 12 degrees for BE50 fuel. Furthermore, the maximum power is obtained at 6,500 rpm, and at an ignition time of 12 degrees BTDC the maximum power generated is 4.63 hp, while for an ignition time of 9 degrees BTDC the power generated is 3.38 hp which occurs at 6500 rpm. These results indicate that there is an increase in power of 6.4%. Moreover, the results also show that for optimal gasoline conditions, the amount of energy consumed at an engine speed of 7000 rpm is around 15705.78 kcal/hour, and for BE-50 it is around 12582.03 kcal/hour, where there is a reduction of about 25.44 %. However, in general, it can be seen that during optimal ignition, there is a saving in fuel consumption in the gasoline-BE50 mixture, while at the same time producing a fairly large thermal efficiency. These results indicate that BE50 has the potential to be used as an alternative fuel in small gasoline engines.

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“…If one of the additives had less of an effect, the blending ratio was be increased. At the same time, the different blending ratios, such as a higher ratio of about 10%, can also be compared to the current blending of ethanol at 10% [45]. In addition, the current blending ratio from 1-15% can also be used to study the performance of different fuel components, such as aromatics and C9+, olefins, RON, etc.…”

Section: Experimental Fuelsmentioning

confidence: 99%

Effects of Unconventional Additives in Gasoline on the Performance of a Vehicle

et al. 2022

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In order to meet stricter emissions regulations and fuel consumption regulations, the upgrading of fuel quality has become one of the most important trends in the development of internal combustion engines. In this article, 89 # gasoline (G89) that is available on the Chinese market was selected as the base fuel, and five unconventional additives, ethyl tert-butyl ether (ETBE), N-Methylaniline, sec-butyl acetate, p-methylphenol and isobutanol, were added to the base fuel and named as G89-1, G89-2, G89-3, G89-4 and G89-5, respectively. The effects of these unconventional additives on a PFI vehicle were investigated. The test was carried out on a chassis dynamometer and the NEDC cycle was adopted to simulate driving conditions. The results show that, in terms of fuel consumption, G89-3 showed the best performance for decreasing fuel consumption. In terms of gaseous emissions, G89-4 decreased all four gaseous emissions, CO2, CO, THC and NOx, to a greater extent, which indicates that blending p-methylphenol into gasoline has a better potential for the vehicle to achieve cleaner emissions. In terms of acceleration performance, the five additives all shortened the acceleration time. The effects of the different additives on shortening acceleration time are basically consistent with the RON of the fuel.

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Effect of ethanol-gasoline blends on SI engine performance and emissions

Cited by 108 publications

References 10 publications

Effects of Water Ratio in Hydrous Ethanol on the Combustion and Emissions of a Hydrous Ethanol/Gasoline Combined Injection Engine under Different Excess Air Ratios

Effects of Water Ratio in Hydrous Ethanol on the Combustion and Emissions of a Hydrous Ethanol/Gasoline Combined Injection Engine under Different Excess Air Ratios

Gasohol Engine Performance with Various Ignition Timing

Effects of Unconventional Additives in Gasoline on the Performance of a Vehicle

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