Does the BMW 7 Series have no throttle?

Throttle is a device to control the size of throttle.

If the engine uses BMW's unique Valvetronic technology, there is no need for a throttle.

The reason for this is the following：

Let me take "multimedia speakers" as an example, which may not be right.

BMW engines usually have four valves per cylinder, two of which are intake valves and two are exhaust valves.

The throttle is used to adjust the air intake, just like the volume knob of the speaker.

Without Valvetronic, all valves are only on and off, just like the switch of a sound box.

If there is Valvetronic, the two intake valves can be used as switches, and the air intake can also be adjusted like the volume knob of the speaker, thus adjusting the throttle.

In most automobile engines, the valve only opens and closes and can only be used as a switch, so the throttle valve is needed as a volume knob to control the intake air.

On the BMW engine equipped with Valvetronic, because the two intake valves are stepless adjustable, they can be used as switches and can adjust the volume, so there is no need for a throttle.

Using Valvetronic without throttle can improve the torque at low speed, improve the response speed of throttle, improve the combustion efficiency of engine and save fuel.

Because the structure of Valvetronic is complex, the key point is that it is not suitable for high speed, so BMW M3, M5 and M6 engines are not used.