It had been initial introduced in 1939 for cars. It contains the fluid coupling and 3 planetary gears. They collectively make three ahead and 1 reverse speed. There isn't a clutch for engagement and disengagement from the engine. Torque converter does the exact same function the clutch does during https://gearbox77529.bloggosite.com/40683262/5-easy-facts-about-gearbox-described