Question

In case of two stroke engines because of scavenging, burnt gases remain in the clearance space as in case of four stroke engines.

(a) True

(b) False

The question was asked during a job interview.

Question is taken from Advantages of Two Stroke Engines topic in section Two Stroke Engines of IC Engine

Answer 1

Answer: (a) True

Explanation: In two-stroke engines, even with scavenging, some burnt gases often remain in the clearance space, similar to what can occur in four-stroke engines. This is due to the limited time for exhaust gases to fully escape before fresh charge enters, leading to residual gases that can affect combustion efficiency.