What does the engine s three stage intake pipe mean

To understand this, you must first understand what the intake manifold of a car engine is.

The intake manifold is actually a pipe that separates an intake main pipe into n pipes (depending on the number of engine cylinders). The main function is to meet the function of separate air intake for each cylinder.

Then you can try to understand what a variable geometry intake manifold is and what are its benefits.

To put it simply. The engine of the car has two most important elements:1. Low rpm torque. 2。High rpm power. Now let's not talk about anything else, just about the air intake system.

When the car is just starting and accelerating sharply to overtake, it needs to feel powerful and cool, and it needs to have torque. Whether the top speed of the car is fast or not is a matter related to high-speed power.

Now the problem comes back, under the condition that the other configuration of the car remains the same, if you use a thin and long intake manifold, in the case of low engine speed, you can increase the air flow speed and pressure strength of the intake air, and make the gasoline better atomized and burn better. {It's the same thing that if we want the water in a pipe to flow strongly, we should flatten the pipe.}

On the contrary, this configuration also has a disadvantage, that is, when the engine is pulled to high speed, because the manifold is too thin, the air intake per unit time is not enough, and the result is that the speed cannot be pulled, resulting in the car not being able to run at high speed. This requires the manifold to be thick and short so that more air can be inhaled.

In order to make the engine have low-speed torque and pull out high-speed, most of today's cars are equipped with variable manifolds or double manifolds.

The double manifold is connected by two manifolds between the carburetor (EFI) and the cylinder head air intake, one thick and straight and the other slender and long (most of the slender ones have curvature), which are controlled by variable valves (just like the airway and esophagus in the human throat). When the speed reaches a certain height, the valve will automatically close, and the gas will be changed to a thick pipe.

The variable manifold appears to be a single tube, but it is actually a thin tube in a thick tube. The structure is different, but the principle is the same.

As the name suggests, the above process is made into three adjustment modes, which can be automatically selected by the computer according to the needs to achieve the best performance of the car engine.

The first section is where the plantain comes out, the middle section is the section where the sensor is connected after coming out of the plantain, and the rear section is the tail section that is the exhaust pipe This is the 3rd section It's very simple You will know what it means once you install it.

That is, the car intake modification, with an additional air grid.