Question

Delay period serves a useful purpose in that it allows the fuel jet to penetrate well into the combustion space.

(a) True

(b) False

This question was posed to me in final exam.

My question comes from Delay Period in section Combustion and Combustion Chambers of IC Engine

Answer 1

The correct answer is:

(a) True

The delay period in an internal combustion engine refers to the time interval between the injection of fuel into the combustion chamber and the start of ignition. During this delay period, the fuel jet can penetrate deeper into the combustion space, allowing for better mixing of fuel with air. This improved mixing enhances combustion efficiency and helps reduce the formation of harmful emissions. Therefore, the delay period does indeed serve a useful purpose by allowing the fuel to penetrate well into the combustion space before ignition occurs.