Question

Which of the following are the theoretical scavenging processes?

(a) perfect scavenging

(b) perfect mixing

(c) short circuiting

(d) all of the mentioned

The question was asked during an interview.

The question is from Scavenging Process in section Two Stroke Engines of IC Engine

Answer 1

Answer: (d) all of the mentioned

Explanation: Theoretical scavenging processes in two-stroke engines include:

- Perfect scavenging: All exhaust gases are removed, and the cylinder is completely filled with fresh charge.

- Perfect mixing: Fresh charge mixes uniformly with exhaust gases.

- Short circuiting: Some fresh charge escapes directly through the exhaust without fully clearing out the exhaust gases.

Each of these represents an idealized scavenging process, thus making option (d) correct.