The impeller (one) is rotated because of the crankshaft and it converts the mechanical Vitality of the crankshaft into kinetic Power by putting the fluid in motion. M (greatest effectiveness level): On this position the torque converter hits its most effectiveness as torque converter, the fluid flows with no effect https://torqueconverterclutch00752.blogsumer.com/33196813/torque-converter-clutch-options