Question

Scavenging air in diesel engine means

• A. air used for combustion sent under pressure
• B. forced air for cooling cylinder
• C. burnt air containing products of combustion
• D. air used for forcing burnt gases out of engine's cylinder during the exhaust period.

Answer 1

The correct option is D air used for forcing burnt gases out of engine's cylinder during the exhaust period.

Scavenging is a process in a diesel engine , in which exhaust (burnt) gases are removed from the cylinder after combustion , done by fresh air coming inside the cylinder .