It absolutely was 1st introduced in 1939 for automobiles. It consists of the fluid coupling and three planetary gears. They collectively make three ahead and just one reverse pace. There is absolutely no clutch for engagement and disengagement from your motor. I’m Mastering Mech and tremendously appreciate your facts. https://elliotaayws.losblogos.com/32930747/little-known-facts-about-gearbox