Questions and Answers
What is Top Dead Center (TDC)?
Position where the piston is closest to the cylinder head and spark plug and the combustion chamber is smallest.
What is Bottom Dead Center (BDC)?
Position where the piston is farthest from the cylinder head and spark plug and the combustion chamber is largest.
What is a Fuel/Air Mixture?
Explosive mixture in engines consisting of atomized fuel and air, created in the carburetor and enters the engine at the intake port or intake manifold.
What is a Spark Plug?
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What is Combustion?
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What is an Engine Block?
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What is a Piston?
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What is a Crankcase?
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What is a Combustion Chamber?
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What is an Intake Port?
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What is an Exhaust Port?
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What is a Connecting Rod?
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What is a Transfer Port?
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What is the Intake/Compression Stroke?
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What is the Power/Exhaust Stroke?
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What is Ignition?
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What is a Crankshaft?
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What is the Fuel/Air/Oil Mixture?
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Where is oil added to lubricate a 2-cycle engine?
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Study Notes
2-Stroke Engine Components and Processes
- Top Dead Center (TDC) is the position of the piston closest to the cylinder head, resulting in the smallest combustion chamber.
- Bottom Dead Center (BDC) is where the piston is farthest from the cylinder head, leading to the largest combustion chamber.
- The fuel/air mixture is an explosive combination of atomized fuel and air created in the carburetor, entering through the intake port or manifold.
- The spark plug ignites the fuel/air mixture within the combustion chamber of an internal combustion engine.
- Combustion refers to the burning process, specifically the explosion of the fuel/air mixture in the engine context.
- The engine block is a casement of iron or aluminum alloy that ensures proper alignment of all engine parts.
- The piston moves within the cylinder, driven by combustion, facilitating the rotation of the crankshaft.
- The crankcase houses the crankshaft and related internal components, drawing in the fuel/air mixture before combustion.
- Combustion chambers are enclosed spaces in the engine where the burning of the mixture occurs, located between the piston and cylinder head.
- The intake port is where the fuel/air mixture enters the crankcase in 2-cycle engines.
Engine Functionality
- The exhaust port allows spent gases to exit the engine in 2-cycle engines.
- The connecting rod links the piston to the crankshaft, transferring the piston’s vertical motion into rotational movement at the crankshaft.
- Transfer ports enable the fuel/air mixture to pass from the crankcase into the combustion chamber in 2-cycle engines.
- The intake/compression stroke occurs as the piston moves from BDC to TDC, creating negative pressure in the crankcase and drawing in the fuel/air mixture while compressing it in the combustion chamber.
- The power/exhaust stroke happens when the piston travels from TDC to BDC, igniting the mixture and forcing the piston down, also uncovering the exhaust port to release gases.
- Ignition is the process of starting combustion, initiated by the spark plug lighting the fuel/air mixture in the combustion chamber.
- The crankshaft is crucial for converting the piston’s reciprocating motion into circular motion.
- The fuel/air/oil mixture is drawn into the crankcase, then into the combustion chamber, where it explodes to produce piston movement.
- Oil is added to the fuel to lubricate a 2-cycle engine, ensuring proper function and reducing wear.
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Description
Test your knowledge on the key components of 2-stroke engines. This quiz covers essential terms like Top Dead Center, Bottom Dead Center, and the Fuel/Air Mixture. Perfect for those looking to understand engine mechanics in detail.