It was initial introduced in 1939 for cars. It contains the fluid coupling and 3 planetary gears. They collectively make three ahead and one particular reverse velocity. There isn't a clutch for engagement and disengagement from your engine. Most transmissions in contemporary vehicles use synchromesh to synchronise the speeds https://gearbox73714.ziblogs.com/33900568/indicators-on-gearbox-you-should-know