Air-petrol ratio in an automotive petrol engine is around ________________?
Correct answer: C. 14 : 1
- A. 25 : 1
- B. 22 : 1
- C. 14 : 1
- D. 4 : 1
Explanation
Petrol engines operate near the stoichiometric air-fuel ratio of about 14.7:1 by mass, commonly rounded to 14:1. This provides approximately enough oxygen for complete combustion of the fuel.
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