Review Article: Effect of Ethanol-Gasoline Fuel Blends on the Exhaust Emissions and Characteristics of SI Engines

Mohamad, Barhm; Szepesi, G.; Bolló, Betti

doi:10.1007/978-3-319-75677-6_3

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…However, this peak pressure occurs close to TDC with higher pressures for ethanol than hydrogen, as shown in Figures 3, 4 and 5. In his review article, Mohammad et al [52] explained this pressure rise due to the higher volumetric efficiency and lower intake temperatures with ethanol/gasoline blend. There are many reasons for this phenomenon, starting from the mixture energy content flowing into the cylinder, hydrogen properties, and the effect of constant spark timing [1,2].…”

Section: Brake Powermentioning

confidence: 99%

Relative Change in SI Engine Performance Using Hydrogen and Alcohol as Fuel Supplements to Gasoline

Yamin¹,

Sheet²,

Rida³

2021

Adv. Sci. Technol. Res. J.

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A simulation study on the effect of hydrogen and ethanol addition as supplementary fuel for gasoline engine at lean mixture (equivalence ratio ϕ = 0.8) was carried out to reduce the gasoline share in the mixture, thus reducing the fuel consumption and harmful emissions. The effect of supplementary fuels on engine performance, emissions, and availability was investigated. This was done by changing the ratio between gasoline and the supplementary fuels in the fuel mixture to achieve the required equivalence ratio. The first part of the simulation consisting of the performance and emissions calculated using the first law, was conducted for all engine speeds. The second part consisting of an availability analysis was conducted at the rated speed of 2750 rpm. The simulation study was conducted using the data obtained from measurements of Ricardo E6/T engine parameters (variable compression ratio engine). The data was also used to verify the models. The study shows that the hydrogen addition reduced the carbon monoxide (CO) and nitrogen oxides (NO 2) share at the lean mixture. The hydrogen addition significantly improved the heat release rate compared with pure gasoline; however, the heat released was close to the top dead center due to its fast burning speed. The ethanol addition improved the first law performance of the engine, e.g., power and efficiency; however, at the cost of increased heat loss. It also improved the indicated work availability in comparison with the addition of hydrogen.

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Section: Brake Powermentioning

confidence: 99%

Relative Change in SI Engine Performance Using Hydrogen and Alcohol as Fuel Supplements to Gasoline

Yamin¹,

Sheet²,

Rida³

2021

Adv. Sci. Technol. Res. J.

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“…One promising substitute for diesel (D) fuels is inexpensive refinery product naphtha (N), which emits fewer CO2 and NOx during combustion and refinement. Several studies have been conducted on the use of naphtha in compression ignition engines (Mohamad et al, 2018;Mohamad & Zelentsov, 2019;Zhang et al, 2016a). Ashour et al (2020) examined the impact of adding 5%, 10%, and 15% naphtha to conventional diesel fuel D100 and biodiesel B30 in a four-stroke, single-cylinder, air-cooled diesel engine under different loads.…”

Section: Introductionmentioning

confidence: 99%

Performance of a single cylinder direct injection 4-stroke diesel engine under effect of using diesel and naphtha blends

Basas,

Khalefa

2023

AMME

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The demand for diesel fuel in the transport industry is expected to rise due to greenhouse gas laws and global economic expansion, necessitating the search for alternative sources. If light distillate fuels can match diesel fuel's efficiency and cleanliness at a more affordable cost, they could potentially enter the market. This study assessed a 1-cylinder, 4-stroke diesel engine's performance using various blends of diesel and heavy naphtha: D100, D97.5N2.5, D95N5, D92.5N7.5, and D90N10. Tests were conducted at 3000 rpm and variable loads, revealing that the maximum permissible naphtha content in D100 is 10%. Higher naphtha proportions led to misfire and instability under heavy loads. 100% diesel demonstrated the lowest brake-specific fuel consumption and higher thermal efficiency, while 90% diesel + 10% naphtha showed the highest fuel consumption and lower thermal efficiency.

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“…The smaller intake manifold pipe diameter increased hydraulic resistance of air intake and worsened therewith cylinder volumetric efficiency that resulted in lower engine power and higher brake specific fuel consumption. Mohamad et al [2] studied the effect of Ethanol-Gasoline blend fuel on engine power output and emissions. Their results showed great improvement in combustion process and exhaust gas characteristics.…”

Section: Introductionmentioning

confidence: 99%

CFD Modelling of Formula Student Car Intake System

2020

Self Cite

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Formula Student Car (FS) is an international race car design competition for students at universities of applied sciences and technical universities. The winning team is not the one that produces the fastest racing car, but the group that achieves the highest overall score in design, racing performance. The arrangement of internal components for example, predicting aerodynamics of the air intake system is crucial to optimizing car performance as speed changes. The air intake system consists of an inlet nozzle, throttle, restrictor, air box and cylinder suction pipes (runners). The paper deals with the use of CFD numerical simulations during the design and optimization of components. In this research article, two main steps are illustrated to develop carefully the design of the air box and match it with the suction pipe lengths to optimize torque over the entire range of operating speeds. Also the current intake system was assessed acoustically and simulated by means of 1-D gas dynamics using the software AVL-Boost. In this manner, before a new prototype intake manifold is built, the designer can save a substantial amount of time and resources. The results illustrate the improvement of simulation quality using the new models compared to the previous AVL-Boost models.The results illustrate the improvement of simulation quality using the new models compared to the previous AVL-Boost models.

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Review Article: Effect of Ethanol-Gasoline Fuel Blends on the Exhaust Emissions and Characteristics of SI Engines

Cited by 10 publications

References 23 publications

Relative Change in SI Engine Performance Using Hydrogen and Alcohol as Fuel Supplements to Gasoline

Relative Change in SI Engine Performance Using Hydrogen and Alcohol as Fuel Supplements to Gasoline

Performance of a single cylinder direct injection 4-stroke diesel engine under effect of using diesel and naphtha blends

CFD Modelling of Formula Student Car Intake System

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