The throttle body butterfly valve is opened when the accelerator pedal is depressed. This allows more air to enter the engine, increasing RPM and power. No matter the design, the throttle body ...
[Fab] went with a simple butterfly valve design, similar to the throttle valve in most gasoline-powered cars. The butterfly vane rotates to vary the flow, turned by a small SG90 servo. A Wemos D1 ...