Question

The ___________ extends for about 13º, movement of the crank.

(a) knocking

(b) delay period

(c) start ability

(d) none of the mentioned

I got this question during an interview.

My question is based upon Delay Period topic in section Combustion and Combustion Chambers of IC Engine

Answer 1

The correct answer is:

(b) delay period

The delay period typically extends for about 13° of crank movement, during which the fuel injection occurs, and the ignition process starts, but the pressure has not yet significantly risen. This period is critical for the proper combustion initiation in the engine.