Air to Fuel Ratio (AFR) Calculator


What is Air to Fuel Ratio (AFR) Calculator?

Mechanics, engineers, and scientists who work with engines or combustion processes need an Air to Fuel Ratio (AFR) Calculator to calculate the proper ratio of air to fuel.

The Formula for Calculating AFR:

The formula for calculating AFR is relatively simple:

AFR = Mair / Mfuel

Where AFR is the Air to Fuel Ratio, Mair is the mass of air, and Mfuel is the mass of fuel.

Example of AFR Calculation:

Suppose we have a combustion process that requires 10 kg of air and 1 kg of fuel. We can calculate the AFR using the formula as follows:

AFR = Mair / Mfuel = 10 kg / 1 kg = 10:1

Therefore, the AFR for this combustion process is 10:1.

How to Calculate AFR Using an AFR Calculator:

To use an AFR Calculator, you need to input the mass of air and the mass of fuel. The calculator will then use the formula AFR = Mair / Mfuel to calculate the AFR and provide the result.


What is the ideal AFR for an engine?

The ideal AFR for an engine varies depending on the type of engine and the fuel used. Generally, gasoline engines run best at an AFR of around 14.7:1, while diesel engines require a lower AFR of around 14:1.

How does AFR affect engine performance?

The AFR affects engine performance by influencing combustion efficiency. An AFR that is too rich (excess fuel) or too lean (excess air) can result in reduced engine power, increased fuel consumption, and increased emissions.

What factors affect AFR?

There are a number of factors that can affect the AFR, including the type of fuel, engine speed, engine load, and air temperature. When calculating AFR, it is important to consider these factors to ensure the correct fuel mixture for efficient combustion.


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