The use of blend methanol at High Compression Ratio in spark-ignition engine (original) (raw)
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Experimental Investigation of Methanol Blend Fuel in SI Engine
Automobile have become a very important part of our modern life style. And it runs on fossil fuel. But the excessive use of fossil fuels will very soon lead to the energy crises so the future of automobile based on fossil fuels has been badly affected by two major problems. That is less availability of fuel and environmental degradation. So it is very important to found some new renewable non-polluting alternative fuels to ensure the proper and safe survival of internal combustion engines. In present study we evaluate the performance of four stroke single cylinder spark ignition engine with ratio of 10%, 20%, 30%, 40% and 60% of methanol and gasoline by volume. Performance parameters (brake thermal efficiency, brake mean effective pressure, TFC and SFC) were determined at various loads on engine with methanol blended gasoline. The comparison was made on performance of conventional SI engine with pure gasoline operation. As a result, brake thermal efficiency and brake mean effective pressure showed improved performance when compared with pure gasoline performances.
Theoretical Study of Engine Performance Working on Methanol-Gasoline Blends
In this study, the effects of methanol–gasoline (M5, M10, M20, M30 and M50) fuel blends on the performance of a spark ignition (SI) engine were investigated. In the theoretical study, the four-cylinder, four-stroke, multi-point injection system SI engine was used. The results obtained from the use of methanol–gasoline fuel blends were compared to those of gasoline fuel. The results indicated that when methanol–gasoline fuel blends were used, the brake specific fuel consumption increased and engine performance parameters such as torque and power increases with increasing methanol amount in the blended fuel.
Impact of Methanol-Gasoline Fuel Blend on The Fuel Consumption and Exhaust Emission of A SI Engine
The 3rd International Conference on Advanced Materials Science and Technology (ICAMST 2015) , 2016
In this study, the effect of methanol-gasoline fuel blend (M15, M30 and M50) on the fuel consumption and exhaust emission of a spark ignition engine (SI) were investigated. In the experiment, an engine four-cylinder, four stroke injection system (engine of Toyota Kijang Innova 1TR-FE) was used. Test were did to know the relation of fuel consumption and exhaust emission (CO, CO2, HC) were analyzed under the idle throttle operating condition and variable engine speed ranging from 1000 to 4000 rpm. The experimental result showed that the fuel consumption decrease with the use of methanol. It was also shown that the CO and HC emission were reduced with the increase methanol content while CO2 were increased.
METHANOL AS ALTERNATIVE FUEL IN HIGH COMPRESSION RATIO TWIN SPARK IGNITION SI ENGINE
The experiments have been carried on the effect of methanol-gasoline blends on the engine performance and combustion characteristics. 4-stroke cylinder digital twin spark ignition engine is used in performing tests at different loads for the blends like M0, M20, M40, M60, M80, as well as for pure methanol also at 26 o BTDC for one spark plug and 24 o BTDC for the other one. As methanol is more volatile than gasoline, the results depicts good enhancement in physical properties due to the addition of methanol. As per the results obtained through experiments it shows that there is an increase in both brake thermal efficiency and fuel consumption with the increase of methanol content in blends. From the results it is also observed that there is a decrement in the emission of CO, UBHC, NO x .
Fossil fuel is the major source for the production of energy used today. Due to the continuous rise in the cost of fossil fuel and demand of pollution free environment and clean energy has also been increasing Alternative fuel has become very noticeable and has a relevant role to play for both CI & SI engines, so it is important to reduce down dependency of gasoline as a fuel. Many research and investigation have been done focusing on using alternative fuel and minimizing the effect on fuel consumption and increasing engine performance. The aim of this review is to analyze the engine performance parameter and future hope of introducing blend of petrolmethanol, petrol with all other alcohol derivatives in varying ratios in SI engine and analyze brake torque, brake power, equivalence air fuel ratio, indicated and brake thermal efficiencies, fuel consumption, volumetric and mechanical efficiency.
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2024
Finding substitute fuels has been more popular in recent years as a response to escalating pollution levels and fuel shortages. The goal of this research is to find the ideal gasoline to ethanol ratio that will maximize engine performance and reduce emissions in spark ignition engines. In order to analyse the performance of different blending ratios, the research looks at metrics such carbon monoxide (CO) emissions, brake power (BP), brake specific fuel consumption (BSFC), and brake thermal efficiency (BTE).
2018
Introduction:Increasing air pollution is one of the problems of living in large cities. Motor vehicles are the main source of emissions of these pollutants. Petroleum derivatives, especially gasoline, are the most important fuel for internal combustion engines. The fuel consumption of these engines causes excess emissions of pollutants such as carbon monoxide, carbon dioxide, sulfur oxides and nitrogen oxides. Therefore, the use of an alternative fuel seems necessary. The aim of this study was to investigate performance characteristics of single-cylinder spark-ignition engine and its pollutant emissions by using methanol and ethanol fuel blended with gasoline. Methods: In this study, Honda single-cylinder four-stroke engine was used. Gasoline was prepared from the locations of the National Oil Distribution Company and separately mixed with methanol and ethanol in different proportions. The tests were performed at 2 engine speeds including 2000 and 4000 rpm. Obtained data were analyz...
Engineering Science and Technology, an International Journal
The aim of this study, which is the first of its kind, is to compare experimentally the effects of different ternary blended fuels, e.g., ethanol-methanol-gasoline (EM), n-butanol-iso-butanol-gasoline (niB) and iso-butanol-ethanol-gasoline (iBE), on engine performance, combustion and pollutant emission characteristics to demonstrate the best potential one from these ternary fuel blends as alternative to fossil fuel. The experiments were performed at similar operating conditions and low content rates of fuel blends (3-10 vol% in gasoline) with varying engine speeds between 2600 and 3400 r/min at half throttle opening position of spark ignition engine. The results showed that the engine performance (volumetric efficiency, torque and brake power) increased, while pollutant emissions (carbon monoxide (CO) and unburnt hydrocarbons (UHC)) decreased at using EM fuel blends, compared to other blended fuels. It was also found that the highest emissions and the lowest performance among the blended fuels are introduced by niB, while iBE presented a moderate level of performance and emissions between niB and EM. On the other hand, the performance of niB and iBE is lower than the base fuel (neat gasoline) but EM showed a higher performance than the base fuel. The emissions of EM, niB and iBE are all lower than the base fuel.
Investigation on Performance Characteristics of Petrol Engine Using Alternate Fuel
In the present scenario the S.I. engines being used in automotives by various manufactures are not properly suitable to out climatic condition. As our country is among tropical countries where the variation in the temperature is having very vast range i. e. from 0ºC to 48ºC in various regions of the country. Looking in to this vast varying temperature range it is very difficult to say that which temperature is most suited to operating condition of engines and gives us best performance level as for as SFC and brake power is concerned. In my work I have tried to investigate the best option to run the S.I. engine and simultaneously to maintain the emission norms. Petrol reserves are getting exhausted and it is recommended to find the alternate solution to it. In the present work the potential of methanol is being explored to serve as alternate fuel. This work is carried out with the use of petrol and methanol on a three cylinder, four stroke, petrol Maruti 800 engine connected to eddy current type dynamometer for loading was adopted to study engine power, fuel economy, engine exhaust emissions of hydrocarbon, oxides of nitrogen in the exhaust. The performance results that are reported include brake power and specific fuel consumption (SFC) as a function of engine coolant temperature; i.e. 50ºC, 60ºC, 70ºC and 80ºC with varying engine speed of 1500, 2000, 2500, rpm. Today research and development in the field of gasoline engines have to face a double challenge: on the one hand, fuel consumption has to be reduced, while on the other hand, ever more stringent emission standards have to be fulfilled. The development of engines with its complexity of in-cylinder processes requires modern development tools to exploit the full potential in order to reduce fuel consumption. There are many strategies for improving fuel economy and reducing exhaust emission. Hydrocarbon emission (HC) and carbon monoxide (CO). And finally it is concluded that no remarkable difference is recorded. With use of methanol instead of petrol the variation is marginal and can be attributed to the cycle temp and combustion efficiency. Thus methano l is recommended for use as an alternative fuel for petrol engine in coming future.
Energy, 2014
In this study, the effect of CR (compression ratio) on a SI (spark ignition) engine's characteristics of performance, combustion and emissions by using pure ethanol, methanol and unleaded gasoline were investigated experimentally. In the experiments, an SI engine having a CR of 8.5:1, having a single cylinder and air-cooled was used. These tests were conducted on four different CRs of 8.0:1, 8.5:1, 9.0:1 and 9.5:1 with a wide-open throttle, original ignition timing and at 2400 rpm. The test results obtained from the three fuel types were compared to each other. The results were shown that the BMEP (brake mean effective pressure), CGP (cylinder gas pressure), BTE (brake thermal efficiency), and BSFC (brake specific fuel consumption) obtained with the use of ethanol and methanol at all CRs were generally increased when they were compared to those of pure gasoline. In general, pure ethanol and methanol provided a lower exhaust emission compared to gasoline's emissions at all CRs. Furthermore, with an increasing CR, the CGP generally increased with the usage of pure ethanol and methanol as compared to unleaded gasoline's study and the CGP and HRR(heat release rate) rose earlier than those values in unleaded gasoline.