Which component would NOT be found in the cylinder assembly of a typical two-stroke diesel engine?

Which component would NOT be found in the cylinder assembly of a typical two-stroke diesel engine?

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

Answer: (D)

In a typical two-stroke diesel, gas exchange is accomplished through ports in the cylinder wall rather than by valves in the cylinder head. The piston itself uncovers intake and exhaust ports as it moves, letting fresh air in and burnt gases out, with scavenging often aided by an external blower or turbocharger. Because of this arrangement, the cylinder assembly includes the piston and the ports carved into the cylinder wall, but not an intake valve. An intake valve is a feature of four-stroke engines (or of systems upstream of the cylinder in some designs), not of the cylinder itself in the common two-stroke diesel.

In a typical two-stroke diesel, gas exchange is accomplished through ports in the cylinder wall rather than by valves in the cylinder head. The piston itself uncovers intake and exhaust ports as it moves, letting fresh air in and burnt gases out, with scavenging often aided by an external blower or turbocharger. Because of this arrangement, the cylinder assembly includes the piston and the ports carved into the cylinder wall, but not an intake valve. An intake valve is a feature of four-stroke engines (or of systems upstream of the cylinder in some designs), not of the cylinder itself in the common two-stroke diesel.