Patent ID: 6832970
Filing Date: 2004-12-21
Classification: F02N,F16H

Abstract:
A reduction gear for the starter-generator of an internal combustion engine, said starter-generator being drive-connected to its crankshaft via a belt drive and the reduction gear being a planetary gear arranged in the transmission path between the crankshaft and a first belt pulley coaxial with said crankshaft characterized in thata) The reduction gear (8) has a housing (10) and a planetary gear stage comprising an internal gear (11), a sun gear (14), a cage (15) and a planetary ring (16) with internal teeth (18) and external teeth (17), b) the internal gear (11) meshes with the external teeth (17) of the planetary ring (16) and is drive-connected to the crankshaft (2) of the internal combustion engine, c) the sun gear (14) meshes with the internal teeth (18) of the planetary ring (16) and can be rotationally locked to the housing (10) by means of a first clutch (19), d) the cage (15) has eccentric bearings (42, 43) for the planetary ring (16), is rotationally locked to the first belt pulley (7), and is rotationally locked by means of a second clutch (20) to one of the members (11) of the planetary gear stage, so that the planetary gear stage rotates as a whole.