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Four-Stroke Engine Basics

Understand the fundamentals of four-stroke engines with detailed explanations on the 4-stroke cycle - intake, compression, combustion, and exhaust. Learn about friction's impact on engine efficiency and how external temperatures affect performance. Test your knowledge with interactive quizzes.

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Four-Stroke Engine Basics

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  1. Four-Stroke Engine Basics Instructor: Adam Megel Next

  2. Internal combustion engine • A heat engine in which fuel is burned inside the engine in chambers or cylinders • https://www.youtube.com/watch?v=5tN6eynMMNw

  3. The 4-Stroke Cycle • 1. • 2. • 3. • 4. Intake Compression Combustion Exhaust Back Next

  4. Intake- process of filling the cylinder with the proper air-fuel mixture through the intake valve. Back

  5. Compression- the process of compressing the air-fuel mixture in the cylinder to make it more combustible Back

  6. Combustion-the process of igniting the compressed air-fuel mixture to create motion and the over all power of the engine. Back

  7. Exhaust- the process of releasing the exhaust out of the cylinder through the exhaust valve. https://www.youtube.com/watch?v=Pu7g3uIG6Zo Back

  8. Friction and the efficiency of Heat Engines • Almost ¾ of the heat produced is not converted into useful work because of friction. Even without friction, all of the energy would not be converted into useful work. Outside temperature effects the efficiency of burning gas. Gas engines are more efficient at warmer temperatures. Back Quiz

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