In spark ignition petrol engines maximum emission of Nox takes place when the air fuel ratio (A/F) is
A. Very weak mixture and A/F ratio about 19
B. Weak mixture and A/F ratio about 17
C. Chemically correct mixture and A/F ratio about 15
D. Rich mixture and A/F ratio about 13.
Answer: Option C
This Question Belongs to Automobile Engineering >> Air Pollution And Its Control In Automobile
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