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Actual Air Fuel Ratio Formula

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Actual air fuel ratio is the actual mass of air mixed with actual mass of fuel that is present during combustion inside IC engine. It is a crucial parameter for good fuel economy in IC engines. Check FAQs

R a = \frac{m a}{m f}

R_a - Actual Air Fuel Ratio?m_a - Mass of Air?m_f - Mass of Fuel?

Actual Air Fuel Ratio Example

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Here is how the Actual Air Fuel Ratio equation looks like with Values.

Here is how the Actual Air Fuel Ratio equation looks like with Units.

Here is how the Actual Air Fuel Ratio equation looks like.

15.9936 = \frac{23.9904}{1.5}

15.9936 = \frac{23.9904kg}{1.5kg}

15.9936 = \frac{23.9904}{1.5}

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Actual Air Fuel Ratio Solution

Follow our step by step solution on how to calculate Actual Air Fuel Ratio?

FIRST Step Consider the formula

R a = \frac{m a}{m f}

Next Step Substitute values of Variables

∴

R a = \frac{23.9904kg}{1.5kg}

Next Step Prepare to Evaluate

∴

R a = \frac{23.9904}{1.5}

LAST Step Evaluate

∴

R a = 15.9936

Actual Air Fuel Ratio Formula Elements

Variables

Actual Air Fuel Ratio

Actual air fuel ratio is the actual mass of air mixed with actual mass of fuel that is present during combustion inside IC engine. It is a crucial parameter for good fuel economy in IC engines.

Symbol: R_a

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Actual Air Fuel Ratio

Mass of Air

Mass of Air refers to the total quantity of air inducted into the engine cylinders during the intake stroke in a specified time frame.

Symbol: m_a

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Mass of Air

Mass of Fuel

Mass of Fuel refers to the total quantity of combustible material (Fuel) entering the engine cylinder in a specified time frame.

Symbol: m_f

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Mass of Fuel

Other formulas in Air Standard Cycles category

Go Mean Effective Pressure in Otto Cycle

P O = P 1 \cdot r \cdot (\frac{(r^{γ - 1} - 1) \cdot (r p - 1)}{(r - 1) \cdot (γ - 1)})

Go Mean Effective Pressure in Diesel Cycle

P D = P 1 \cdot \frac{γ \cdot r^{γ} \cdot (r c - 1) - r \cdot ({r c}^{γ} - 1)}{(γ - 1) \cdot (r - 1)}

Go Mean Effective Pressure in Dual Cycle

P d = P 1 \cdot \frac{r^{γ} \cdot ((R p - 1) + γ \cdot R p \cdot (r c - 1)) - r \cdot (R p \cdot {r c}^{γ} - 1)}{(γ - 1) \cdot (r - 1)}

Go Work Output for Otto Cycle

W o = P 1 \cdot V 1 \cdot \frac{(r p - 1) \cdot (r^{γ - 1} - 1)}{γ - 1}

How to Evaluate Actual Air Fuel Ratio?

Actual Air Fuel Ratio evaluator uses Actual Air Fuel Ratio = Mass of Air/Mass of Fuel to evaluate the Actual Air Fuel Ratio, Actual Air Fuel Ratio refers to the actual mass ratio of air to fuel present in the mixture that gets burned within the cylinders. This ratio is critical for engine performance, emissions, and fuel efficiency. Modern engine control systems constantly adjust the AFR to optimize performance based on factors like engine load and speed. Actual Air Fuel Ratio is denoted by R_a symbol.

How to evaluate Actual Air Fuel Ratio using this online evaluator? To use this online evaluator for Actual Air Fuel Ratio, enter Mass of Air (m_a) & Mass of Fuel (m_f) and hit the calculate button.

FAQs on Actual Air Fuel Ratio

What is the formula to find Actual Air Fuel Ratio?

The formula of Actual Air Fuel Ratio is expressed as Actual Air Fuel Ratio = Mass of Air/Mass of Fuel. Here is an example- 15.9936 = 23.9904/1.5.

How to calculate Actual Air Fuel Ratio?

With Mass of Air (m_a) & Mass of Fuel (m_f) we can find Actual Air Fuel Ratio using the formula - Actual Air Fuel Ratio = Mass of Air/Mass of Fuel.

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Actual Air Fuel Ratio Formula

Actual Air Fuel Ratio Example

Actual Air Fuel Ratio Solution

Actual Air Fuel Ratio Formula Elements

Other formulas in Air Standard Cycles category

How to Evaluate Actual Air Fuel Ratio?

FAQs on Actual Air Fuel Ratio

Variable Name