methanol vs ethanol octane rating

The octane rating of fuels in the USA is fairly standardized, a majority of gasoline cars require a minimum of 87 octane (on the US measurement system) and some even require or recommend a minimum of 91 octane. According to the the Annual Energy Review, Ethanol consumption, primarily as an automotive fuel octane booster, has increased from 7 trillion BTU in 1981 to 1091 trillion BTU in 2011. 37 g/l of HCI. Obviously blending e85 + straight methanol would result in a higher octane rating than straight e85 thereby allowing you to run more boost and resulting in more power. Ethanol/E100 Methanol Hydrogen Electricity Chemical Structure [1] C 4 to C 12 and Ethanol ≤ to 10% C 8 to C 25 Methyl esters of C 12 to C 22 fatty acids C 3H 8 (majority) and C 4H 10 (minority) CH 4 (majority), C 2H 6 and inert gases CH 4 same as CNG with inert gasses <0.5% (a) CH 3CH 2OH CH 3OH H 2 N/A Fuel Material (feedstocks) Methanol is a clean-burning fuel that produces fewer smog-causing emissions — such as sulphur oxides (SOx), nitrogen oxides (NOx) and particulate matter — and can improve air quality and related human health issues. Methanol is most commonly produced on a commercial scale from natural gas. technologies, the demand for higher-octane fuels continues to grow. Mixing can be problematic. Currently, even racing fuels, may have ethanol added. [15] studied the effect of 5% and 10% ethanol and methanol blending in unleaded gasoline on engine performance and exhaust emission. PROS: Methanol is similar to Ethanol as it is a potent fuel with an octane rating of 100 that allows for higher compression and greater efficiency than gasoline. Methanol works the same way but to a greater extreme. E.G. M1 Racing Methanol has a 99.95% minimum purity – the highest purity available in the U.S. Octane vs A: The 2017 Jeep Grand Cherokee comes equipped with a 3.6L V6 base engine that is designed to burn regular unleaded gasoline with a minimum octane rating of 87. Methanol. So while it isn't the actual Octane molecule (which has a max rating of 100, have to add Ethanol or Methanol to the blend to get higher), it is doing the same thing in a different way and in simple terms, adds to the effective Octane Rating. E10 or less. I'm at about 14* initial and 36* mechanical timing with a 273 Commando. Ethanol is often mistaken or linked with a fuel called methanol, a wood- or petroleum-based alcohol that is especially corrosive when stored in solution with bare aluminum. I would run E0 if I could get it - esp. Water/Methanol injection adds knock resistance also along with cooling the charge air. NOS Octane Booster is the best octane booster on the market, hands down. Upon further research, you would need to find pure ethanol or ethanol with water. One large disadvantage of methanol is that it has a lower energydensity than gasoline. and 97-104 motor octane number (MON). 2012 Suzuki DL650AL2, over 45k miles already! •CI:~45% •SI:~30% Tomorrow’s Fuel •Renewable, clean burning based. Methanol is popular in some countries. You don't have that risk with E85 as you'll always be running e85. With the introduction of Ethanol type fuels like E85, and the wide spread use of water/meth injection, there is a debate stirring about which is better.The goal of this article will be to compare and contrast the two, weighing out the pros and cons of each … Ethanol-blended fuels such as E65, E85 and E98 have become popular due to the availability at the pump in many regions of the country. This form of Ethanol aids in producing a higher octane and ultimately, a superior fuel. Clear. Methanol can be produced from coal and biomass.Methanol has a higher octane rating and generally lower pollutant emissions compared togasoline. Methanol works the same way but to a greater extreme. The only ethanol-free fuel available in my area is 87 octane only. The octane rating of pure ethanol is 100. There is 7 times more fuel in a car than there is in a truck. And the equation for heat of combustion is C2H5OH + 3 O2 2 CO2 + 3 H2O. E30 = 93.4 octane. There is 7 times more fuel in a car than there is in a truck. Methods for cleaning up : Take up liquid spill into a non combustible material e. Methanol, with its 116 octane and high flash point, additionally reduces the chances of detonation. ... like ethanol/methanol from biomass - bamboo grows really fast - gets developed. 2. Methanol wins for both of those. 3rd in older carbs it is aggressive to gaskets. You must have a fuel system capable of flowing high volume. From what I can tell, meth will make more power. On the other hand, it has higher BTU output. Octane has a chemical formula of CH3 (CH2)6CH3 its heat of combustion is C8H18 + 12.5 O2 8 CO2 + 9 H2O. Ethanol can also be used straight, and some racers do, but it’s more common to hear about E85, a blend of about 85% ethanol. Are there any differences in engine sound if you compare gasoline, methanol and ethanol? Have a look at NHRA Top Alcohol dragsters that run methanol fuel with an octane rating of only about 110. Furthermore, the autoignition … What's interesting is that when ethanol is blended with gasoline, it performs as if its octane rating is 112, making ethanol a very effective octane booster when used in gasoline. It offers an alternative to the proposed hydrogen economy or ethanol economy, though these concepts are not exclusive.. The biggest advantage of Methanol is its inability to detonate. Renegade Pro E85 is not blended with pump gas, it is made with premium race grade components and premium grade ethanol which produces high quality, consistent blend racing fuels that eliminates the need for testing and changing tune-ups. I don't know what the standards are in other countries, but in the US, premium fuels aren't ethanol-free by default. I wasn't getting detonation using 93 with ethanol. RE: Higher boost and E85 or Methanol. VP uses only lined drums which prohibit rust, corrosion and metal deposits that can contaminate fuel delivery systems. Likely that the Evo ups the boost until knock occurs then backs it off a touch, hence it can take advantage of the methanol. Something interesting to know is that they actually use ethanol as an easy way to boost octane levels in fuel. The water sensitivity of methanol/gasoline requires a separate fuel distribution system. Methanol, like ethanol, contains soluble and insoluble contaminants. Ethanol also dissolves in water, it also has an alcoholic, sweet odour to it. ENERGY VALUE: Energy value is an expression of the potential energy in fuel. I'll run this for awhile and see how it runs. 5.7. With a blending octane rating of 114, ethanol is the cleanest and most VP Race Fuels X98 is designed and blended with the highest fuel-grade ethanol for straight ethanol applications. It is uncommon in the U.S. except for some dedicated race cars. What we learned was that the more heat you could keep in the cylinder, the more ethanol you could dump in there to absorb it, and the more the ethanol liked it. The Motor octane rating is typically about 10 points lower than the Research octane rating. Ethanol has a chemical formula of CH3CH2OH or C2H5OH. Thanks for the input! “ Methanol has an even higher octane rating than ethanol, but it is difficult to assign an Anti-Knock Index,” Santner continues. When blended with gasoline, methanol releases formaldehyde in passenger cars until the catalytic converter warms up. •Ethanol content: 20-40% •Thermal efficiency: Parity! -It decreases intake charge temps as well as increasing the octane level of your gas. When blended with gasoline, methanol releases formaldehyde in passenger cars until the catalytic converter warms up. I find 87 E0 and 89 E10 perform about the same on my 2016 - with the 87 maybe being a hair smoother running. •Ethanol content: 0-10% •Thermal efficiency: Compression Ignition engine dominates Spark Ignition. Methanol, Ethanol, Propanol, Butanol, Pentanol, Hexanol, Octanol, Nonanol, Decanol. Of butanol isomers, the highest blending octane numbers are achieved with isobutanol: blending RON 114 and MON 94. Studies have shown an increase of about 5% output power by adding 10% ethanol blend in a … higher consumption) 2nd. Ok, 2 stroke engines don't need the higher octane but we avoid ethanol wherever we can. We didn't get that tech and instead got EVs. Pure (200 proof) Ethanol (non-denatured) will typically have a RON value of between 109 and 112 Octane. Gasoline, methanol and ethanol compared - posted in The Technical Forum Archive: I have a couple of questions about gasoline, methanol and ethanol. The sensitivity (RON-MON) is typically 8-10 units for gasoline, but 14 units for ethanol. #7. About six parts per million of methanol are needed to run. ... and the methanol not properly recovered from the finished product. 27 properties of alcohols as fuels Octane Number The Octane number of methanol and ethanol are higher than gasoline Hence higher compression ratios can be used with alcohols resulting in higher thermal efficiency Alcohols have the ability to raise considerably the octane ratings of gasolines with which they are mixed The effect is greatest on the poorer grades of gasoline A … Methanol is basically an alcohol—just like the ethanol that the government already requires gasoline suppliers to mix into their product. Unlike ethanol, which is often distilled from food crops, methanol is often produced from methane. But like ethanol, it helps raise the octane of the gasoline. Typical "octane booster" gasoline … All other E85’s currently manufactured within Australia all utilise a 98 RON 15% petrol base. If you want to run higher than 40% ethanol, which we suggest if you are looking to push past 450whp, you will need to upgrade your low-pressure fuel pump. On the other hand, when the Indy Car League converted from methanol to straight ethanol, dynamometer tests revealed a reduction in power after the conversion. Methanol, if added to a high octane rating base gasoline fuel, leads to a blend with higher octane rating, and the measured RON/MON will have large error bars. In the 1990s, Nobel … The cost of methanol is much lower than that of racing gasoline, and it has a higher octane rating. In addition, as Argonne National Laboratory states, ethanol reduces greenhouse gas emissions between 34 to 44 percent compared to gasoline. Methanol is alcohol distilled from woody plant material or natural gas. The burn will be between 2 and 2 so you will burn 7 to 1. Spark Ignition achieves significant gain. You're right about e85 having more energy, but it looks like with more boost you can make up for that. For neat methanol, this procedure gave a RON rating of 109.5. Above, we suggested running around 40% E85 with the MHD backend flash tuner. Both alcohols have a high octane rating, with ethanol at 109 RON (Research Octane Consequently, a race engine converted from methanol to ethanol typically uses less fuel (30 to 40% less) to make the same level of power. as a tank of gas lasts me months. Dec 19, 2016. Adding 10% methanol to unleaded gasoline raised the road octane 2 to 3 numbers. My question for you all is your opinion on that. E85 is a combination of ethanol and low octane gasoline. The octane rating of methanol depends on the octane rating scale measurement type used, n-Heptane is the zero point of the octane rating scale then the octane rating of methanol is 115 The compression ratio was then locked and the normal procedure of bracketing the test fuel with reference fuels was used to determine the octane rating. The octane rating and latent heat of vaporisation (cooling effect) of Methanol is higher vs the equivalent amount of Ethanol so in essence you sacrifice octane for enrichment when running Ethanol+Water. Whats the main difference between methanol and ethanol? As methanol will burn with a VERY rich mixture, going rich can support higher effective or total compression than the octane rating would suggest. All 3 will give you more power. 3. E65 is usually found during the winter months in colder climates while E85 is the standard for the rest of the year. It has a higher octane rating than gasoline and is believed to produce more power. ... Methanol is supposed to be nasty stuff. The ethanol runs a bit leaner, compared to methanol, meaning a stioch, number slightly higher the methanol, and has less cooling capacity. Ethanol - Density and Specific Weight vs. Methanol is a much better fuel for high boost application due to the high octane rating coupled with a very high latent heat of evaporation meaning it can absorb large amounts of heat from the combustion chamber as it goes through a phase change from liquid to vapour. As a general rule, more volatile fuel pre-ignites more easily than less volatile fuel (although the opposite happens with respect to chain length and short chain lengths are more volatile than long chain lengths - so it can get confusing), and shorter carbon chain fuels are more volatile than longer chain fuels, so Heptane is more volatile than Octane so the more Heptane in the fuel,the more volatile is that fuel. Racing fuels, avgas, LPG and alcohol fuels such as methanol may have octane ratings of 110 or significantly higher. Zimbabwe: 93 octane available with no other grades of fuels available, E10 which is an ethanol blend of fuel at 10% ethanol is available the octane rating however is still to be tested and confirmed but it is assumed that its around 95 Octane. 2016. Octane numbers of methanol and ethanol are high. It offers an alternative to the proposed hydrogen economy or ethanol economy, though these concepts are not exclusive.. As technology is figuring out more ways to make machines and the world less dependent on fossil fuels and run more efficiently on alternative energy, the tide could be turning for pure oil users. Altun et al. e85 has an octane rating of 105 and pure methanol has an octane rating of 113. Or, in Blending Chart 3, creating E30 bumps that 89-octane gasoline to an inspiring 92 octane. Much has been said about the octane rating of alcohols. 3. Another octane rating test involving running the test engine at 900 rpm vs 600 rpm and using variable valve timing gives the "Motor Octane Number". Besides it's "octane " is 116 as compared to ethanol's 114. The burn will be between 2 and 2 so you will burn 7 to 1. 5. However, there are fail safe options. That is why engines with higher compression require higher-octane fuel. 1st it has a lower energy content per gal (i.e. This is a total ethanol content increase of only 20-percent, because pump gas already contains 10-percent ethanol. Methanol tanks can be flexibly arranged in the ship and require significantly lower safety measures compared to hydrogen or ammonia. Besides the safety aspects and the lower complexity, the lower investment costs for users are a further upside of the ... Ethanol contains about 84,600 BTUs/gallon, which is about 27% less than gasoline, but about 30% more than methanol. Pure methanol at about 5.5:1 A/F ratio will suport a total compression ratio of about 20:1. Temperature Rating - Freeze protecting of cooling systems ... Methanol - Thermophysical Properties vs. Because of the dangers of Methanol ( as compared to ethanol ) I won't touch that stuff. Warm water works better. But refinery processes to increase - 0506 - Methanol (CH 3 OH), also known as wood alcohol, is considered an alternative fuel under the Energy Policy Act of 1992.As an engine fuel, methanol has chemical and physical fuel properties similar to ethanol.Methanol was used in the 1990s but is no longer in use or being developed as a commercial transportation fuel. Benefits The benefits of ethanol relative to race fuel and/or methanol are multifold, but let's start with the one many of you already have guessed-power. What we learned was that the more heat you could keep in the cylinder, the more ethanol you could dump in there to absorb it, and the more the ethanol liked it. FYI, denatured has an octane rating of 129 while methanol is 123 octane. A 20% blend of good ethanol and that same crappy 85 octane gas would be at the 91 octane mark, while a 30% blend would be something like 93. In the standard RON test in the CFR … While mixing 85 percent 108-octane ethanol with 15 percent 93 octane would yield something in the 102 octane range, the fact is that most manufacturers mix it with 84 octane or lower. Sunoco 260 GT, a popular race fuel, has a stoichiometric air/fuel ratio of 14.1:1. "Meths" is known as … gruntguru (Mechanical) 15 May 11 23:28. Online calculator, figures and tables showing density and specific weight of ethanol at temperatures ranging from -25 to 325 °C (-10 to 620 °F) at atmospheric and higher pressure - Imperial and SI Units. However, technically speaking, the octane ratings of alcohols can not be measured. But that's pure ethanol, not E85. Ethanol is usually produced by combining an ethyl group ( \(CH_{3}CH_{2}-\) ) to a hydroxyl group (-OH). Details: Octane – R+M/2 100.1 But traditional petroleum-based octane boosters are expensive and in short supply. The primary distinction between premium and normal octane is its octane rating—91 or higher vs 87 for standard octane. The simple answer is the engine will run richer with Ethanol+Water mix vs a Methanol+Water mix in the same ratio. Pure gasoline is much more energy dense than ethanol (which is why we get worse mileage on the blends, even when our cars are set up to handle them just fine, the energy isn't there). The octane rating of methanol is around 110 octane. Some racers report more power from E85 than from methanol. The higher the number, the more resistance it has. Methanol. Besides it's "octane " is 116 as compared to ethanol's 114. It has a better cooling effect, and a much higher octane rating than e85. However the big advantage is that it has a far higher octane rating than petrol, hence you can run far higher compression, more boost and / or more advanced ignition timing. The relatively low flame temperature means that fewer nitrogen oxides are producedby methanol than by ethanol. However, all car manufacturers have approved ethanol-enhanced gasoline, up to 85% ethanol content in “Flexible Fuel Vehicles”. It's .25 cents more per gallon than the 93, but may pay off with better miles per gallon. “BLENDING OCTANE” RATINGS OF VARIOUS GASOLINE COMPONENTS WHOLESALE PRICE DIFFERENTIAL 84 92 94 101 103 104 106 110 113 115 70 75 80 85 90 95 100 105 110 115 120 Gasoline Blendstock n-Butane Alkylate Benzene Toluene TAME Xylene MTBE Ethanol Methanol Octane Rating 113 OCTANE ETHANOL Premium Grade Gasoline (93) Regular Grade Gasoline … 3. Adding methanol to the fuel has several benefits - higher octane, reduced AFR sensitivity (you can run a lot more excess fuel), better charge cooling. The octane rating (Anti-Knock Index, AKI) of normal unleaded gasoline in the United States is 87. For n-butanol, blending MON is as low as 78-81 (Table 1). In addition, as Argonne National Laboratory states , ethanol reduces greenhouse gas emissions between 34 to 44 percent compared to gasoline. The methanol economy is a suggested future economy in which methanol and dimethyl ether replace fossil fuels as a means of energy storage, ground transportation fuel, and raw material for synthetic hydrocarbons and their products. Ethanol - Specific Heat vs. The octane rating of pure ethanol is 100. 2. Octane is just the anti-knock ability, there is also the cooling effect and BTU output at target AFR. X98 Offers best in class performance in a wide variety of applications including turbocharged. About six parts per million of methanol are needed to run. 5 Gallon Pail. Both not only have high octane ratings, but also result in greater charge-cooling than with gasoline. It depends a lot on how it is measured and various reports give different values, but 115 octane seems about typical. it sucks water. TimBle. gallons by 2022 [13] and [14]. Methanol/Chloroform Protein Precipitation • … There is plenty of literature to various blends of ethanol, methanol, butanol and gasoline utilization in gasoline engines. This is in contrast to an increase in petroleum consumption in transportation from 9.487 million barrels per day in 1981 to 13.223 million barrels per day in 2011. However, sinificant deterioration in driveability tests occurred because of methanol's leaning effect. They have a pump which will provide 100 octane unleaded race-gas/ethanol mix (9% ethanol, this is Sunoco 260 GT Sunoco 260 GT - Unleaded Race Fuels) 4. Gasoline, methanol and ethanol compared - posted in The Technical Forum Archive: I have a couple of questions about gasoline, methanol and ethanol. In contrast the combined octane rating of regular gasoline is 87 and that of premium gasoline is 93. Premium gasoline is not "stronger." Correct, and as far as I know, there is no street legal 110 octane fuel, but e85 is perfectly legal. Even the 10% ethanol Premium fuel is only 91 octane. This resistance to burn is a non-issue in It permits installation before or after the turbo on most vehicles. Octane >95AKI. Save Share. Some systems allow for ethanol, isopropyl alcohol, or denatured alcohol, but that all depends on what the manufacturer specs happen to be for the equipment. 1. In fact, sales of premium gasoline hit a 15-year high in 2017. In spark ignition engines, both alcohols can run at a much higher exhaust gas recirculation rates and with higher compression ratios. Temperature and Pressure E98 is usually only available by special order. This article is the fifth and last of our Big Fuel Test series (Article 1: Introduction, Article 2: BOOSTane, Article 3: Meth Injection, Article 4: Race Fuels Fight Back), which spanned 13 different test fuels, octane additives and injections.During this final installment of the series, we review the ethanol-based fuels (E85, C85) and get the results of this power-making shootout, … But that could be the quality of fuel also. Ethanol, that is also known as ethyl alcohol falls with the chemical structure with two carbon atoms. I propose that meth injection is not enough to significantly alter your octane rating as it's done by most people (e.g. The production of methanol can be from natural gas at no great cost and is easy to blend with gasoline fuel. The high octane numbers of ethanol could enable optimization of engine to increase the thermal efficiency. The octane rating for E15 (15% ethanol) is 88 octane and E85 (85% ethanol) is 108 octane. (3) Methanol has a significantly large heat of vaporization (see Table 1). I only know that both chemicals are a sort of alcohol. The methanol economy is a suggested future economy in which methanol and dimethyl ether replace fossil fuels as a means of energy storage, ground transportation fuel, and raw material for synthetic hydrocarbons and their products. Methanol reported as having an octane rating of 133 (RON) and 105 (MON), with a combined octane rating of 119 ((R+M)/2). Both types of fuel are not volatile enough to start a cold engine easily, but when Methanol burns, … Ethanol and methanol have a lot higher octane number compared to pure gasoline fuel [ 10 ]. Contributed By: Enginebasics.com . That slight difference is just not worth the added risk. As a result, the “effective” octane rating of VP’s fuels is even higher than the octane test indicates, and they will prevent detonation better than competitive fuels with similar MONs. Details. M12 nozzle, delivering 750 cc/min). Bay Area, CA. Methanol is not affected as greatly by changes in atmospheric conditions as with gasoline. Fortunately, ethanol stands ready to deliver. Because of the dangers of Methanol ( as compared to ethanol ) I won't touch that stuff. Toad Ethanol is the same type of alcohol found in alcoholic beverages. In Blending Chart Number 1, note how E30 improves standard 91-octane E10 to a 93-octane rating. I normally run 93 octane 10% ethanol in my 6-speed R/T, but I'm thinking of trying the 90 octane ethanol free gas to see what the mpg difference is. E85 is examined as a racing fuel. At 40% ethanol fuel, you are adding serious horsepower, but likely running your low-pressure fuel pump at a full 100%. The blending RON of ethanol is about 120-135, and the blending MON 100-106. No auto manufacturer recommends concentrations of methanol higher than 5% in their cars. #50. E10, a fuel mixture of 10% anhydrous ethanol and 90% gasoline sometimes called gasohol, can be used in the internal combustion engines of most modern automobiles and light-duty vehicles without need for any modification on the engine or fuel system. Fuels can certainly be rated above 100 octane, and racing fuels often are. Or, in Blending Chart 3, creating E30 bumps that 89-octane gasoline to an inspiring 92 octane. Internal combustion engine fuel Using methanol as a fuel in spark-ignition engines can offer an increased thermal efficiency and increased power output (as compared to gasoline) due to its high octane rating (114) and high heat of vaporization. Target AFR with ethanol in a car than there is also known as ethyl alcohol falls the... Liquids - Volumetric Expansion Coefficients < /a > 2016, has a lower energy content per gal ( i.e are. Typical MON value of between 89 and 92 octane fuels X98 is designed and with. Of ethanol is that it has a resistance to detonation, it.. 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