What is the throttle and where is it?

1. Throttle is the most important component in EFI automobile engine system. Its upper part is the air filter, and the lower part is the engine block, which is the throat of the automobile engine.

2. The position of the throttle valve is connected with the air filter and the cylinder block. The throttle valve is slightly cylindrical, and there is a disk rotating around the axis in the center of the cylinder. With the rotation of the disc, the cross section of air circulation in the cylinder will be controlled, thus controlling the flow of mixed gas.