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Types Internal Combustion Engines External Combustion Engines
Internal Combustion-Basic Parts Crankcase Crankshaft Piston Piston Rings Connecting Rod 4-Stroke Engine Valvetrain Camshaft Valves
Crankcase Main Structural component of the engine.
Piston Cylindrical part fitted in a cylinder Transmits power created by the combusting fuel & air
Piston Rings Seals the Piston to the Cylinder Wall
Connecting Rod Links Crankshaft to Piston
Crankshaft Converts the Linear motion of the piston to a Rotary motion.
4-Stroke Engine-Valvetrain Camshaft Operates Valves Valves Open and Close Ports
Internal Combustion Engines 4-Stroke Gas 2-Stroke Gas
4-Stroke Gas Engines 4 Stroke / Cycle Intake Compression Power Exhaust
Intake Stroke Piston moves down drawing in fuel and air.
4-Stroke Gas Engines - Intake
4-Stroke Gas Engines - Compression Piston moves up, squeezing the fuel and air
4-Stroke Gas Engines - Compression
4-Stroke Gas Engines - Power Near Top Dead Center spark ignites the fuel and air combusting the vapor forcing the piston down.
4-Stroke Gas Engines - Power
4-Stroke Gas Engines - Exhaust Piston moves up forcing out the spent gasses
4-Stroke Gas Engines - Exhaust
4-Stroke Gas Engines 4-Stroke In Action Pros Easy to Refuel Light Weight Inexpensive Cons Only 30% Efficient
2-Stroke Gas Engines Completes the 4-cycles in 2-strokes No Valvetrain Uses Transfer Ports
2-Stroke Gas Engines 2-Stroke in action Advantages: Less Moving Parts Light Weight Twice as Powerful Operating Position Disadvantages: Frequent Rebuilds Pollution Burns Oil
External Combustion Engines Steam Engines Rocket Engines
Steam Engines Steam engines were the first engine type to see widespread use. Used to pump water
Rocket Engines Rocket engines are reaction engines. Two Types Solid Fuel Liquid Fuel
Solid & Liquid Fuel
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