A semi-automated transmission is the place a few of the operation is automatic (normally the actuation of the clutch), but the motive force's enter is necessary to move off from a standstill or to alter gears. Automatic gearboxes appeared commercially during the nineteen forties, based on the Intercontinental Journal of https://automobile-gearbox28494.blog-eye.com/34279736/automobile-gearbox-an-overview