A REVIEW ON METHANOL AS AN ALTERNATIVE FUEL FOR IC ENGINES

Advances in Mechanical Engineering, 2021

Methanol showed promising results as an alternative to gasoline fuel. However, there exists a research gap for the effect of oxygenated fuel on lubricant oil deterioration along-with engine performance and emissions. This study aims the very topic. The characteristics of SI engine were evaluated for two different loads and nine different engine speeds. The lubricant oil samples were taken out from engine oil sump after 100 h of engine operations using gasoline (G) and M12 sequentially. The brake power of M12 was observed higher in comparison with G. The maximum BTE of 23.69% was observed for M12 on lower load and 2800 rpm. On average, the 6.05% and 6.31% decrease in HC emissions were observed using M12 in comparison with G at lower and higher load respectively. M12 produced 32.52% higher NOx emissions than that of G at lower load. The reduction in kinematic viscosities at 40°C of lubricant oil were found 11.61% and 18.78% for M12 and G respectively. TAN, specific gravity, flash poin...

Biodiesel blend with methanol additive improved the combustion pressure. The brake specific fuel consumption was found to be high compare to diesel. NOx increase, while CO and CO 2 were found to be decreased.

International Journal of Automotive and Mechanical Engineering, 2013

In the current work, a comprehensive study on the possibility of using methanol as an alternative fuel for diesel engines was carried out. Methanol was mixed at different ratios with diesel fuel. The mixing ratios of methanol to diesel were 0:100, 10:90, 20:80 and 30:70. The effects of methanol fraction on engine power, torque, brake specific fuel consumption (BSFC), brake thermal efficiency and exhaust temperature were experimentally investigated at variant engine speeds. The engine used to carry out these experiments is a four-stroke four-cylinder diesel engine. The results showed that mixing methanol at different fractions with diesel fuel has a significant effect on the engine performance. The methanol to diesel ratio of 10:90 exhibited the lowest exhaust temperature and achieved an improvement in the output power of approximately 70% compared to the other ratios. Also, the brake thermal efficiency improved at all the mixing ratios used. Furthermore, the BSFC of pure diesel fuel...

2014

This paper presents a brief review on the use of methanol and di-methyl ether (DME) in spark ignition engine, their performance and emission characteristics based on the reports of different researchers available in the literature. Methanol can be produced from avail-able fossil raw materials and also from biomass. A very few literature is available on the study of DME as a supplementary fuel to gasoline. Therefore the authors have made an attempt to compile those findings in this paper for further progress. Also the usability of methanol as a supplementary fuel have been complied and represented in graphical man-ner. DME is primarily produced by converting natural gas, organic waste or biomass to synthetic gas in a twostep synthesis process. The review shows that engine power, brake specific fuel consumption, brake thermal efficiency increases or decreases depending upon the operating conditions of the engine and methanol percentage in the methanol-gasoline blends. Similar trend is...

Advances in environmental science and technology, 2016

Methanol as a biofuel is an environmentally friendly substitute for pure diesel and can be obtained from biomasses. The use of biofuels such as methanol for the combustion process is associated with positive impacts on the environment. Using pure methanol or a blend of diesel/methanol fuel in motorized vehicles has been proposed by researchers. In this paper, pure methanol was injected into the combustion chamber of a ISM 370 HD diesel engine and the exhaust emissions were evaluated by using AVL FIRE CFD code software at four engine speeds (1200, 1400, 1600 and 1800 rpm). Additionally, the influences of EGR mass fraction and various injection timings were investigated. In order to validate the simulation results, in-cylinder mean pressure and rate of heat release (RHR) were compared with experimental data, and the results gave an acceptable agreement. The obtained results from the conducted simulation showed that the use of methanol fuel in the combustion chamber dramatically reduce...

The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines, 2004

Methanol was iniected into the suction port ofeach cylinder in an ordinary direct iniection diesel engine, and was ignited by a small arnount ofgas oil as an ignition source. The effects ofthe equivalence ratio ofmethanol, the iTljection amount and the iniection timing ofgas oil, the intake temperature and the compression ratio on ignition, the maximum burning rate ofmethanol mixture and the knock limit were investigated experimentally. It is found that the maximurn burning rate ofmethanol is almost independent on the intake temperature until knock onset, then, the burning pTocess of methanol is "flame propagation", As results, a marked improvement in the tracle-offbetween NOx and smoke was achieved maintaining a high thermal efflciency by a suitable combination between the parameters mentioned above for each engine load further adopting the high EGR rate and the small orifice size nozzle as well,

Volume

In the present day scenario emissions associated with the exhaust of automobiles resulting in global warming is a major menace to the entire world and also detrimental to health. Here an experimental attempt has been made to know the level of variation of exhaust emissions (Carbon monoxide, Hydrocarbons, Nitrusoxides) in S.I. four cylinder engine by adding methanol in various percentages in gasoline and also by doing slight modifications with the various subsystems of the engine under different load conditions. For various percentages of methanol blends (0-15%) pertaining to performance of engine it is observed that there is an increase of octane rating of gasoline along with increase in brake thermal efficiency, indicated thermal efficiency and reduction in knocking. On the other hand exhaust emissions CO and HC are considerably decreased but CO 2 and No x simultaneously slightly increasing. It is notable that for these methanol blends combustion temperature is found to be high and exhaust gas temperature decreasing gradually.

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 .

International journal of automotive science and technology, 2022