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  2. Air–fuel ratio - Wikipedia

    en.wikipedia.org/wiki/Airfuel_ratio

    The stoichiometric mixture for a gasoline engine is the ideal ratio of air to fuel that burns all fuel with no excess air. For gasoline fuel, the stoichiometric airfuel mixture is about 14.7:1 [ 1 ] i.e. for every one gram of fuel, 14.7 grams of air are required.

  3. Lean-burn - Wikipedia

    en.wikipedia.org/wiki/Lean-burn

    The heart of the Mitsubishi's MVV system is the linear airfuel ratio exhaust gas oxygen sensor. Compared with standard oxygen sensors, which essentially are on-off switches set to a single air/fuel ratio, the lean oxygen sensor is more of a measurement device covering the air/fuel ratio range from about 15:1 to 26:1. [19]

  4. Engine efficiency - Wikipedia

    en.wikipedia.org/wiki/Engine_efficiency

    A gasoline engine burns a mix of gasoline and air, consisting of a range of about twelve to eighteen parts (by weight) of air to one part of fuel (by weight). A mixture with a 14.7:1 air/fuel ratio is stoichiometric, that is when burned, 100% of the fuel and the oxygen are consumed.

  5. Stoichiometry - Wikipedia

    en.wikipedia.org/wiki/Stoichiometry

    Gasoline engines can run at stoichiometric air-to-fuel ratio, because gasoline is quite volatile and is mixed (sprayed or carburetted) with the air prior to ignition. Diesel engines, in contrast, run lean, with more air available than simple stoichiometry would require. Diesel fuel is less volatile and is effectively burned as it is injected. [16]

  6. Flammability limit - Wikipedia

    en.wikipedia.org/wiki/Flammability_limit

    Attaining the best combustible or explosive mixture of a fuel and air (the stoichiometric proportion) is important in internal combustion engines such as gasoline or diesel engines. The standard reference work is still that elaborated by Michael George Zabetakis , a fire safety engineering specialist, using an apparatus developed by the United ...

  7. Stratified charge engine - Wikipedia

    en.wikipedia.org/wiki/Stratified_charge_engine

    Conventionally, a four-stroke (petrol or gasoline) Otto cycle engine is fueled by drawing a mixture of air and fuel into the combustion chamber during the intake stroke. This produces a homogeneous charge: a homogeneous mixture of air and fuel, which is ignited by a spark plug at a predetermined moment near the top of the compression stroke.

  8. Exhaust gas analyzer - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_analyzer

    Mixing ratio = weight of fuel / weight of air - Expressed as mass ratio: 14.7 kg of air per 1 kg. of fuel. - Expressed as volume ratio: 10,000 liters of air per 1 liter of fuel. With this relationship theoretically a complete combustion of gasoline is achieved and greenhouse gas emissions would be minimal. The coefficient is defined as Lambda ...

  9. Homogeneous charge compression ignition - Wikipedia

    en.wikipedia.org/wiki/Homogeneous_charge...

    The high compression ratio in the auxiliary combustion chamber causes the auto-ignition of the homogeneous lean air-fuel mixture therein (no spark plug required); the burnt gas bursts - through some "transfer ports", just before the TDC - into the main combustion chamber triggering its auto-ignition. The engine needs not be structurally stronger.