What is the stoichiometric ratio for methanol?

Gasoline offers a fairly narrow tuning window. The maximum-power rich air/fuel ratio of roughly 12.5:1 is about 85 percent of its 14.7:1 stoichiometric value. Methanol on the other hand, can go as rich as 4:1, which is about 62 percent of its stoichiometric value of 6.45:1.

What is the compression ratio for methanol?

Ethanol and methanol can take significantly higher compression ratios than gasoline. Racing engines burning methanol and ethanol fuel often have a compression ratio of 14∶1 to 16∶1.

What is the stoichiometric air-fuel ratio for ethanol?

Without knowing the Stoichiometric AFR for the fuel in your tank, there is no way to use wideband O2 sensor and lambda to determine exact value of AFR. Most AFR meters simply assume pure gasoline and use a value of 14.7:1….Air to Fuel Ratio (AFR)

What should my AFR be at WOT?

Best performance for most vehicles is in the 12.5 to 13 AFR range. Going too rich will have the opposite affect and decrease your performance. Getting up to cruising speed or getting ready to pass someone, you usually are looking for the performance to get up and go.

Does methanol make more power?

Methanol has been a preferred fuel for race-car drivers and teams for decades, for various reasons. While it’s true that gasoline has a higher energy density (about 18,400 BTU/pound) than methanol (9,500 BTU/pound), if you can burn three times more methanol than gasoline per power stroke, you can make more power.

Is methanol bad for engines?

Methanol will destroy the aluminum in your engine by causing it to oxidize, or basically rust. Methanol does this by destroying the aluminum-oxide coating on the surface of the aluminum, this causes the aluminum to oxidize again once exposed to oxygen and form a new layer of aluminum-oxide…. over and over again.

What is the octane of methanol?

III. Methanol reported as having an octane rating of 133 (RON) and 105 (MON), with a combined octane rating of 119 ((R+M)/2). In contrast the combined octane rating of regular gasoline is 87 and that of premium gasoline is 93.

What air fuel ratio is best for power?

For maximum reliability at full power, air/ fuel ratios from 10.5-12.5:1 are considered best, depending on the engine. Richer than around 10.5:1, you start to get noticeable black smoke from the exhaust and the car can struggle to run properly without misfiring.

Is High AFR lean or rich?

When an air/fuel mixture has too much fuel, it is rich. When there is not enough fuel, it is lean. An AFR higher than stoich = lean. An AFR lower than stoich = rich.

What is the stoichiometric AFR for methanol 6.4?

I would strongly suggest that you consider tuning in lambda as it will make the transition between different fuels so much easier. Lud086 is right, the stoichiometric AFR for methanol is 6.4:1 so on methanol 6.4:1 = 1.00 lambda.

What is the stoichiometric air fuel ratio of methane?

So the stoichiometric air-fuel ratio of methane is 17.2. When the composition of a fuel is known, this method can be used to derive the stoichiometric air-fuel ratio. For the most common fuels, this, however, is not necessary because the ratios are known: Natural gas: 17.2. Gasoline: 14.7.

Is the combustion process possible even if the AFR is different than stoichiometric?

The combustion is possible even is the AFR is different than stoichiometric. For the combustion process to take place in a gasoline engine, the minimum AFR is around 6:1 and the maximum can go up to 20:1. When the air-fuel ratio is higher than the stoichiometric ratio, the air-fuel mixture is called lean.

How is the stoichiometry of the fuel reaction calculated?

STOICHIOMETRIC AIR. The theoretical air required to complete combustion of fuel results from the equation of stoichiometry of oxygen/fuel reaction. Stoichiometric air means the minimum air in stoichiometric mixture. The stoichiometric air/fuel ratio (AFR) can be calculated from the reaction equation (g/g).