How to Calculate Lambda on Air Fuel Ratio?

How to Calculate Lambda on Air Fuel Ratio? – Lambda (λ) is a comparison between the current air-fuel ratio and the standard air-fuel ratio (10:1).

How to Calculate Lambda on Air Fuel Ratio?

How to Calculate Lambda on Air Fuel Ratio?
Lambda in Emission test. Image source: Mannys Mechanical Repairs

λ = A/F Actual Machine =1(Result) @ Actual/ reality/ is happening.

Standard A/F (10:1) @ Room temperature / 20oC
@ Air Fuel Ratio (air-fuel ratio)

In theory, the standard Air Fuel ratio is 10:1, for example:
1. = 10:1 (actual) = 1(Result)
10:1(standard)
Why do we know the A/f that occurs on the engine is 10:1, because the result is 1.

2. = 5:1(actual) = 0.5 (result)
10:1(Standard)
From the results of example no 2, we can conclude that there is an actual fat mixture. We can also conclude that HC (Hydro Carbon) is increasing from the standard.

3. = 15:1(Actual) = 1.5 (Result)
10:1(Standard)
From the results of example no. 3, we can conclude that there is actually a lean mixture. We can also conclude that there is a decrease in HC (Hydro Carbon) from the standard size.

EMISSION CONTROL

  1. CO (Carbon Monoxide): CO is produced due to incomplete combustion caused by a lack of O₂ (oxygen), standard size (0.5-1.5%). Excessive CO results will be toxic and cause great danger to humans. living things on earth.
  2. HC (Hydro Carbon): HC is produced from fuel vapor which occurs in combustion because there is no perfect combustion of materials so as to produce raw fuel, maximum size (300ppm/part per million). dangerous for our life.
  3. CO₂(Carbon Dioxide): CO₂ is produced from complete combustion and this gas is non-toxic and harmless to our lives.
  4. O₂(Oxygen): In Emission Control measurements, O₂ is not a gas produced from combustion, but O₂ is a gas that helps in combustion.
  5. NOx(Nitrogen Oxygen): NoX is produced from a mixture of Nitrogen and Oxygen which burns at a temperature of 800⁰ C.

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