Intake system components
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The primary components of the automotive intake system are: Intake manifold; Throttle body/carburetor; Air induction components
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Air cleaners
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Air cleaners filter the air before it reaches the engine. They remove abrasive particles which cause wear and damage. The filter must stop minute particles without restricting air-flow.
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Carburetor air cleaners
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Most air cleaners trap abrasive particles using a pleated dry paper element but some use the dust-attracting property of oil.
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EFI air cleaners
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The air cleaner on a multi-point fuel injected engine uses a dry-type element. It is connected to the throttle body by a duct. For optimum performance, it needs to be supplied with cool, clean air.
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Intake manifolds
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The intake manifold carries the air of the air-fuel mixture to each cylinder. In spark ignition engines, fuel is either mixed with the air at the entrance to the manifold, or injected close to the cylinder head.
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Intake air heating
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To maintain ideal combustion conditions and reduce emissions, many air cleaners include a system to maintain air-intake temperature, regardless of outside air temperature.
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Volumetric efficiency
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Volumetric efficiency is a measure of the air-fuel mixture burned in the cylinder, usually expressed as a percentage.
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| Forced induction |
Engine performance can be improved using an air pump to force air or mixture into the cylinders. A pump driven by exhaust gases is called a turbocharger. |
