Introduction to the basic knowledge of intake manifold
For a carburetor or throttle body gasoline injection engine, the intake manifold refers to the intake line before the carburetor or throttle body to the cylinder head intake. Its function is to distribute air and fuel mixture from the carburetor or throttle body to the intake ports of each cylinder.
For airway fuel injection engines or diesel engines, the intake manifold simply distributes clean air to the intake ports of each cylinder. The intake manifold must distribute the air, fuel mixture, or clean air as evenly as possible to each cylinder, for which the length of the gas flow passages in the intake manifold should be as equal as possible. In order to reduce the gas flow resistance and improve the intake capacity, the inner wall of the intake manifold should be smooth.