Effect of ethanol–unleaded gasoline blends on engine performance and exhaust emission

Al-Hasan, Mohammad

doi:10.1016/s0196-8904(02)00166-8

Cited by 461 publications

(214 citation statements)

References 2 publications

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“…In addition, it has also low carbon content fuel that can reduce the emission of carbon dioxide, the main greenhouse gas. Many governments promoted the usage of LPG through their energy policies [11,12]. LPG vehicles emit about one-third fewer amounts of reactive organic gases as compared to gasoline fuelled vehicles.…”

Section: Lpg and Methanol Emissions Characteristicsmentioning

confidence: 99%

Experimental Investigation on the Use LPG-Methanol Blends as a Fuel in Si Engine and Emissions Characteristics

2017

IJRTER

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Abstract:In this study; an experiment was carried out to examine the effects of LPG-methanol fuel blends of various proportions on the emission performance of a four cylinder SI engine are experimentally investigated. Experimental study has been conducted on a four cylinder, watercooled, the engine compression ratio(9.7) and the modifications to the engine were minimal and a dual throat carburetor was used to mix LPG and methanol before being fed into the carburetor. Using engine cooling water temperature, methanol was evaporated before entering the carburetor. The methanol concentration in the blend has been changed from 5% to 25% with the increments of 5%, was added into each blends. Performance tests were conducted to determine the correct air/fuel ratio (lambda=1). Exhaust emissions were analyzed for CO, CO2, NOx, HC, O2 using LPG-methanol blends with different percentages of fuel blends at variable engine speeds ranging between 1000 and 5000 rpm SI engine. It was observed that depending on the rate of methanol increase in mixture, the CO2, CO, NOx and HC emission concentrations in the engine exhaust gases decreased.

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Section: Lpg and Methanol Emissions Characteristicsmentioning

confidence: 99%

Experimental Investigation on the Use LPG-Methanol Blends as a Fuel in Si Engine and Emissions Characteristics

2017

IJRTER

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“…Furthermore, ethanol also acts as fuel additive to improve the engine performance [12]. Some researchers proved that ethanol has several advantages over gasoline such as the reduction of CO and HC emissions burning and better antiknock characteristics, which allow the use of a higher compression ratio of the engine [13][14][15]. Research by Al-Farayedhi [16] on the SI engine showed that the addition of ethanol in gasoline can reduce emissions of CO gas, especially in the rich combustion conditions for the extra oxygen already contained in ethanol (available oxygen contained).…”

Section: Introductionmentioning

confidence: 99%

Effect of ethanol addition on the performance and exhaust emissions of a spark ignition engine

Sasongko¹,

Wijayanti²

2017

J. MECH. ENG. SCI.

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The depletion of fossil fuel availability and increase of pollution due to the use of fossil fuels have forced the researcher to find a renewable-friendly energy source. One of the potential replacements is alcohol based fuel. This present study investigated experimentally the influence of ethanol addition on the engine performance, in terms of effective power, brake specific fuel consumption, and exhaust emissions of a gasoline spark ignition engine. The engine used in the research was a 4-stroke single cylinder, indirect injection system with engine capacity of 124.8cc, and compression ratio of 9.3:1. The experiments were conducted at eight different engine speeds ranging from 1500 rpm to 5000 rpm and 10 types of gasoline-ethanol mixtures (E10 to E100). The result showed that the effective power decreased with the increase of ethanol in the fuel blends for all variations of engine speed. Leaning effect of ethanol addition in the blend fuel caused the CO emissions to decrease greatly as well as the HC emissions. On average, gasoline engine fueled by pure ethanol reduced the CO emission level by more than 60 % in volume compared to the engine with gasoline fuel. On average, the maximum power of the engine with fuel blend was obtained at engine speed of around 2500 to 3000 rpm. For higher ethanol content on the fuel blend, the optimum shift to the lower engine speed. It can be concluded that engine operation with ethanol content on the fuel performed better in the lower engine speed.

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“…One of the extensively utilized methods in this regard is to blend gasoline with ethanol, which has few drawbacks, such as the phase separation of ethanolgasoline blend [5,6]. Recently conducted researches have demonstrated that gasoline blended with midlevel hydrous ethanol makes an appropriate fuel for utilization in internal combustion engines [7]. A comparison between mid-level (0-40% volumetric concentration of water) hydrous ethanol-gasoline blend and anhydrous gasoline-ethanol blend can be found in the research done by Schifter et al [6].…”

Section: Introductionmentioning

confidence: 99%

Performance and emissions optimization of an ethanol-gasoline fueled SI engine with oxygen enrichment using artificial bee colony algorithm

2017

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Abstract. The use of arti cial neural network in conjunction with arti cial bee colony algorithm is proposed as a method for performance and emissions optimization of an SI engine. The case study here involves the oxygen enriched combustion of an SI engine fueled with hydrous ethanol and gasoline. In this study, the engine was considered as a black box and its performance and emissions were extracted experimentally at di erent intake air oxygen concentrations, hydrous ethanol injection rates, and ethanol concentration in the hydrous ethanol mixture. Then, the simultaneous injection of hydrous ethanol and oxygen enriched combustion was investigated to maximize the fuel conversion e ciency and minimize the CO and NOx emissions. Therefore, an objective function consisting of both the emission and performance parameters was optimized using the Arti cial Bee Colony algorithm. The engine model used in this optimization process was obtained from an Arti cial Neural Network trained with experimental engine data. For operating speed of 3000 rpm, the optimization results indicated 1.21% improvement in fuel conversion e ciency and 31.11% and 13.94% reduction in CO and NOx emissions, respectively. At the speed of 2000 rpm, fuel conversion e ciency improved by 4.11% and CO emission decreased by 18.73%, while NOx concentration increased by 28.35%.

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Effect of ethanol–unleaded gasoline blends on engine performance and exhaust emission

Cited by 461 publications

References 2 publications

Experimental Investigation on the Use LPG-Methanol Blends as a Fuel in Si Engine and Emissions Characteristics

Experimental Investigation on the Use LPG-Methanol Blends as a Fuel in Si Engine and Emissions Characteristics

Effect of ethanol addition on the performance and exhaust emissions of a spark ignition engine

Performance and emissions optimization of an ethanol-gasoline fueled SI engine with oxygen enrichment using artificial bee colony algorithm

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