It was first introduced in 1939 for cars. It is made up of the fluid coupling and 3 planetary gears. They collectively make three forward and one reverse velocity. There is not any clutch for engagement and disengagement through the engine. Most transmissions in modern autos use synchromesh to https://troycbzxt.therainblog.com/32720453/top-latest-five-gearbox-urban-news