Prepare for the Engineman EN A School Test 1. Utilize flashcards and multiple choice questions with detailed explanations to boost confidence and readiness for the test.

Multiple Choice

In a two-stroke diesel engine, which feature allows air to be admitted through openings in the cylinder wall?

Air enters a two-stroke diesel through openings in the cylinder wall called intake ports. As the piston moves, it uncovers these ports at the right times, letting fresh air flow into the cylinder for scavenging and preparation for the next compression stroke. This ported design means there are no conventional intake valves in the cylinder head, which is why intake ports are the feature that enables air admission through the wall. The intake manifold simply supplies air to these ports, while piston rings are there to seal the cylinder and do not control air entry.

Air enters a two-stroke diesel through openings in the cylinder wall called intake ports. As the piston moves, it uncovers these ports at the right times, letting fresh air flow into the cylinder for scavenging and preparation for the next compression stroke. This ported design means there are no conventional intake valves in the cylinder head, which is why intake ports are the feature that enables air admission through the wall. The intake manifold simply supplies air to these ports, while piston rings are there to seal the cylinder and do not control air entry.