Intake Valve
An intake valve, or inlet valve, is a component in an internal combustion engine that controls the flow of air (or an air-fuel mixture) into the cylinder. The timing of its opening and closing is critical for engine performance, efficiency, and proper function.
Key Features & Characteristics
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Larger Head Diameter
Intake valves are generally larger than exhaust valves to allow more air and fuel into the cylinder, which increases engine power and efficiency.
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Material & Construction
They are typically made from steel alloys, often with chrome and silicon, to provide excellent resistance to heat and wear during operation.
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Tempered Components
Specific areas, such as the valve seat and stem, are often hardened or tempered to withstand repeated cycles and reduce wear.
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Controlled Opening and Closing
A camshaft provides pressure to open the valve during the intake stroke, while a return spring pushes it back into its closed and sealed position to prevent leaks.
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Cooling
The intake valve is cooled by its contact with the relatively cooler air-fuel mixture that enters the cylinder.
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Airflow Regulation
The valve's main function is to precisely control the amount of the air-fuel mixture that enters the combustion chamber, directly influencing the engine's efficiency and performance.
