A gearbox or a transmission method within an automobile is actually a equipment which works by using many gears, shafts and actuating components to transmit energy from motor for the wheels. For more more information, Here's an in depth post on gearboxes or transmission units used in automobiles. It has an epicyclic equipment arrangement. As the figure https://automobile-gearbox42840.blog-ezine.com/34283089/the-ultimate-guide-to-automobile-gearbox