The faster the car goes, the more the governor valve opens and the upper the pressure from the fluid it lets by. Compound Planetary Gearset This automatic transmission utilizes a list of gears, known as a compound planetary gearset, that appears like an individual planetary gearset but essentially behaves like https://gearboxauto08631.thezenweb.com/helping-the-others-realize-the-advantages-of-gearbox-auto-71829821