Question

The amount of flow in EGR, can be as high as ____________ of the total intake.

(a) 20%

(b) 30%

(c) 35%

(d) 40%

I got this question in a national level competition.

The above asked question is from Reducing Emissions by Chemical Methods in portion Engine Emissions and their Control of IC Engine

Answer 1

The correct answer is:

(b) 30%

In Exhaust Gas Recirculation (EGR), the amount of exhaust gas flow can be as high as 30% of the total intake air. This helps in reducing the combustion temperature and thus lowering nitrogen oxide (NOx) emissions.