Understanding Two-Stroke Engines

What is a two-stroke engine?

• A two-stroke engine is an internal combustion engine that completes a power cycle in two strokes of the piston.

• A two-stroke engine requires four strokes of the piston to complete a cycle.

• A two-stroke engine is primarily used in large industrial machines.

• A two-stroke engine is a type of electric motor.

How does a two-stroke engine differ from a four-stroke engine?

• A two-stroke engine has a power cycle in three strokes, while a four-stroke engine has a power cycle in five strokes.

• A two-stroke engine is more fuel-efficient than a four-stroke engine.

• A two-stroke engine has a power cycle in two strokes, while a four-stroke engine has a power cycle in four strokes.

• A two-stroke engine operates on a single stroke, while a four-stroke engine operates on two strokes.

What are the main advantages of using a two-stroke engine?

• More complex design

• Higher power-to-weight ratio, simpler design, fewer moving parts, and more compact size.

• Lower fuel efficiency

• Higher maintenance requirements

What is the purpose of the fuel and oil mixture in a two-stroke engine?

• The fuel and oil mixture lubricates the engine and provides fuel for combustion.

• The mixture cools the engine and prevents overheating.

• The fuel and oil mixture is used for cleaning the engine parts.

• The mixture is only for starting the engine and has no other purpose.

What is the typical ratio of oil to fuel in a two-stroke engine?

• 100:1

• 50:1

• 40:1

• 25:1

What happens if the oil-to-fuel mixture is incorrect?

• Engine damage and reduced performance.

• Increased engine lifespan.

• Enhanced throttle response.

• Improved fuel efficiency.

Name the main components of a two-stroke engine.

• Cylinder head, fuel injector, turbocharger

• Piston rings, oil pump, radiator

• Cylinder, piston, crankshaft, spark plug, intake and exhaust ports.

• Exhaust manifold, fuel tank, alternator

What is the function of the piston in a two-stroke engine?

• The piston generates electrical power.

• The piston compresses the air-fuel mixture and expels exhaust gases.

• The piston controls the fuel injection timing.

• The piston cools the engine components.

How does the exhaust system work in a two-stroke engine?

• The exhaust system in a two-stroke engine recycles burnt gases back into the combustion chamber.

• The exhaust system primarily cools the engine by circulating coolant through the exhaust pipes.

• The exhaust system in a two-stroke engine is only responsible for reducing noise levels.

• The exhaust system in a two-stroke engine expels burnt gases and helps draw in fresh air-fuel mixture through the movement of the piston.

What are the common maintenance practices for two-stroke engines?

• Using diesel fuel exclusively

• Neglecting the cooling system

• Regularly replacing the battery without inspection

• Regular oil mixing, spark plug maintenance, air filter cleaning, fuel line inspection, and exhaust system care.