ALOK KUMAR PANDEYASSISTANT PROFESSOR

DR. C.V.RAMAN UNIVERSITYKARGI ROAD KOTA BILASPUR

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Throughout this lesson on four-stroke engines, learner will self-navigate through this PowerPoint presentation

Be sure to click on every link Learner will be quizzed at the end of the

lesson Click on Next to move on, or Back to go back.

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Material that will be covered:Four-stroke engine basicsOther engine typesBasic components of a four-stroke engineThe four-stroke cycle

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A four-stroke engine:Is an internal combustion engineConverts gasoline into motionIs the most common car engine typeIs relatively efficientIs relatively inexpensive

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Two-stroke engines Diesel engines Rotary engines Turbine engines Steam engines

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Intake Valve

Valve Cover

Intake Port

Head

Coolant

Engine Block

Oil Pan

Oil Sump

Crankshaft

Camshaft

Exhaust Valve

Spark Plug

Exhaust Port

Piston

Connecting Rod

Rod Bearings

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NextDiagram

Intake Valve- opens at the proper time to let in air and fuel. Valve Cover- Protects the valves and the valve springs.

Keeps dirt out and lubricating oil in. Intake Port- the passageway in a cylinder head for the fuel

and air to pass through. Head- a platform containing most of the parts of the

combustion chamber. Coolant- circulating water and antifreeze to keep the

temperature regulated. Exhaust Valve- open at the proper time to release the

exhaust

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Spark Plug- A device, inserted into the combustion chamber for firing an electrical spark to ignite air-fuel mixture

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1. 2. 3. 4.

IntakeCompressionCombustion

Exhaust

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

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

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

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Exhaust- The process of releasing the exhaust out of the cylinder through the exhaust valve.

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THANKS