Question

At the end of the induction stroke the temperature is that of clearance gases.

(a) True

(b) False

I got this question during an interview.

The query is from Heat Rejection in portion Heat Rejection and Cooling of IC Engine

Answer 1

The correct answer is:

(b) False

At the end of the induction stroke, the temperature of the air-fuel mixture in the cylinder is generally lower than the temperature of the clearance gases. This is because, during the induction stroke, fresh air or air-fuel mixture is drawn into the cylinder, which is typically cooler than the gases remaining from the previous combustion cycle. The temperature of the clearance gases (exhaust gases) is typically higher and is reduced during the intake process as fresh mixture enters the cylinder.