The intake manifold is various tubes that transfer the air from the air filter to the engine. It is essential to the engine as it distributes the air filter and fuel to the cylinders. Modern engines with new technology has Gasoline Direct Injection that introduces the fuel into the combustion chamber. The distribution process is important to improve engine efficiency and performance. The intake manifold is made out of three materials: aluminum, cast iron, or composite plastic.
TurbulenceTurbulence in the intake allow the fuel droplet to break up, improving the atomization. The reduction of engine knock can be caused by the conversion of droplets that are being completely burning all of the fuel. Turbulence is beneficial for the intake, but too much can cause a decrease in engine performance.
Volumetric efficiencyThe design of the intake manifold is important to the efficiency of an engine. Changes can cause pressure to decrease, meaning less air will be traveling to the combustion chamber.
A modern intake manifold have individual tubes that uses runners, the runner allows the air to flow at a significant speed. This is a process that happens very fast then the valve is open.
Effects of a bad intake manifoldA bad intake manifold can cause a lot of worries, especially when there is constant leaking, stalling, and terrible fuel economy.