Examkin

Soru

Zorluk: KolayFuel and Air Intake Systems

In an automotive fuel system, what is the ideal (stoichiometric) ratio of air to fuel by weight for complete combustion in a standard gasoline engine?

  1. A
    1 part air to 14.7 parts fuel
  2. 14.7 parts air to 1 part fuelCevap
  3. C
    4 parts air to 1 part fuel
  4. D
    1 part air to 1 part fuel

Cevap

14.7 parts air to 1 part fuel
The stoichiometric air-fuel ratio for gasoline is approximately 14.7:114.7:1 by weight. This means 14.7 parts of air are required to completely combust 1 part of fuel with minimal unburned hydrocarbons and carbon monoxide emissions.

Adım Adım Çözüm

1
Identify the definition of stoichiometric air-fuel ratio for standard gasoline.
Stoichiometry is the chemically ideal mass ratio where all fuel is burned with all available oxygen.
Gasoline engines require an exact proportion of atmospheric oxygen to combust hydrocarbons completely without excess air or unburned fuel.
2
Determine the standard mass ratio for gasoline combustion.
14.7:114.7 : 1 (14.7 parts air to 1 part fuel by weight).
14.7 pounds/grams of air contain the precise amount of oxygen required to burn 1 pound/gram of gasoline.

Anahtar Kavram

Stoichiometric Air-Fuel Ratio in Gasoline Engines
Tahmini Süre:45s
Bu soruyu puanla

Konular

Fuel and Air Intake Systems

Bu konudan daha fazla soru