Understanding Two-Stroke and Four-Stroke Engines

What completes a combustion and exhaust cycle in only two strokes of the piston?

• Electric motor

• Two-stroke engine

• Four-stroke engine

• Diesel engine

Who received a patent for the two-stroke gas engine in 1879?

• Karl Benz

• Rudolf Diesel

• Nikola Tesla

• Henry Ford

Which engine type is known for having a simpler mechanic and consolidates the process into two strokes?

• Hybrid engine

• Two-stroke engine

• Four-stroke engine

• Electric engine

What is a significant advantage of two-stroke engines over four-stroke engines?

• More fuel-efficient

• Fantastic power-to-weight ratio

• Less pollution

• Longer-lasting

Why do two-stroke engines have fewer overheating concerns?

• They operate at lower temperatures

• They use water cooling

• Each new charge cools off the chamber

• They have a more complex cooling system

What is a disadvantage of two-stroke engines compared to four-stroke engines?

• Less power

• More expensive to manufacture

• More harmful emissions

• Heavier

Why are two-stroke engines not commonly used in cars?

• They are too powerful

• They are too noisy

• They are too expensive

• Lack of a dedicated lubrication system

What does the oil and gas mixture do in a two-stroke engine?

• Only lubricates the system

• Only powers the engine

• Lubricates and powers the engine

• Cools the engine

Why do two-stroke engines produce a lot of pollution?

• They operate at higher temperatures

• They use low-quality fuel

• New charges of air and fuel sneak out through the exhaust port

• They have a complex exhaust system

In what applications are two-stroke engines primarily used?

• Long-distance transportation

• Applications needing great power-to-weight ratio

• Heavy machinery

• Passenger cars