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Air-fuel Ratio
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Geliefert zwischen Mi., 04.03.2026 und Do., 05.03.2026
Details
Air-fuel ratio (AFR) is the mass ratio of air to fuel present during combustion. When all the fuel is combined with all the free oxygen, typically within a vehicle's combustion chamber, the mixture is chemically balanced and this AFR is called the stoichiometric mixture (often abbreviated to stoich). AFR is an important measure for anti-pollution and performance tuning reasons. Lambda ( ) is an alternative way to represent AFR.In industrial fired heaters, power plant steam generators, and large gas-fired turbines, the more common term is percent excess combustion air. For example, excess combustion air of 15 percent means that 15 percent more than the required stoichiometric air is being used.A mixture is the working point that modern engine management systems employing fuel injection attempt to achieve in light load cruise situations. For gasoline fuel, the stoichiometric air/fuel mixture is approximately 14.7 times the mass of air to fuel. Any mixture less than 14.7 to 1 is considered to be a rich mixture, any more than 14.7 to 1 is a lean mixture - given perfect (ideal) "test" fuel (gasoline consisting of solely n-heptane and iso-octane).
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130214906
- Genre Chemistry
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Sprache Englisch
- Anzahl Seiten 84
- Herausgeber Alphascript Publishing
- Größe H220mm x B5mm x T150mm
- Jahr 2009
- EAN 9786130214906
- Format Fachbuch
- ISBN 978-613-0-21490-6
- Titel Air-fuel Ratio
- Untertitel Air-fuel ratio, Adiabatic flame temperature, AFR sensor, Air-fuel ratio meter, Lean burn, Mass flow sensor, Oxygen sensor
- Gewicht 144g
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