In a two-stroke diesel engine, which component is typically absent from the cylinder assembly?

In a two-stroke diesel engine, which component is typically absent from the cylinder assembly?

• A. Piston
• B. Ports in the cylinder wall
• C. Combustion chamber
• D. Intake valve

Answer: (D)

Two-stroke diesels get their air through ports in the cylinder wall rather than a movable intake valve in the head. As the piston moves, these ports open and close to admit air (for scavenging) and exhaust gases, often aided by a blower or crankcase compression. The piston and the combustion chamber arrangement are still present, but there is no separate intake valve in the cylinder head. So the component typically absent is the intake valve.

Two-stroke diesels get their air through ports in the cylinder wall rather than a movable intake valve in the head. As the piston moves, these ports open and close to admit air (for scavenging) and exhaust gases, often aided by a blower or crankcase compression. The piston and the combustion chamber arrangement are still present, but there is no separate intake valve in the cylinder head. So the component typically absent is the intake valve.