Engineering · Diesel — Scavenging
In a two-stroke diesel, the process of using fresh air to push exhaust gases out of the cylinder and fill it with a fresh charge is called:
- AScavenging✓ Correct
- BDetonation
- CCavitation
- DCarryover
Explanation
Scavenging replaces burnt gases with fresh air. Common arrangements are uniflow (intake ports + exhaust valve), loop, and cross scavenging. Effective scavenging is essential because a two-stroke has no separate exhaust stroke.
Authority: Modern Marine Engineer's Manual; diesel operating principles
Practice the full Engineering bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Engineering questions
- Diesel — Operating Cycle
In a four-stroke-cycle diesel engine, the events occur in which order?
- Diesel — Operating Cycle
Compared with a four-stroke engine of the same speed and cylinder size, a two-stroke-cycle diesel produces a power stroke:
- Diesel — Air Systems
The primary purpose of scavenging in a two-stroke diesel engine is to:
- Diesel — Air Systems
A turbocharger increases engine power output mainly by:
- Diesel — Combustion
Ignition of the fuel in a diesel engine is initiated by:
- Diesel — Fuel
The cetane number of a diesel fuel is a measure of its: