Practice Stoichiometry Of Combustion (2) - Combustion and Fuels

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9 questions

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6 sample questions

Question 1.
Define the term Stoichiometric Air-Fuel Ratio (AFR).
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Consider how much air is needed for ideal combustion.
Question 2.
What is the primary product of complete combustion?
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Think about the combustion of hydrocarbons.
3Question 3.
What is the combustion reaction of a hydrocarbon fuel represented by?
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Remember the balanced reaction involves hydrocarbons and O2.
4Question 4.
True or False: An increase in excess air always improves combustion efficiency.
- True
- False
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Think about the implications of too much air in the system.
Question 5.
If a combustion engine runs with an actual AFR of 14:1 while the stoichiometric AFR is 15:1, calculate the equivalence ratio.
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Use the formula for equivalence ratio we discussed.
Question 6.
Design a combustion system where the desired emissions include minimal CO and NOx. What air-fuel ratio considerations will you include?
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Think about how changing the mixture impacts emissions.

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