Patent ID: 9200609
Filing Date: 2015-12-01
Classification: F02N,F16D,Y10T

Abstract:
1. A torque transmission mechanism for an internal combustion engine, adapted to transmit a starting torque from a starter motor to a crankshaft of the internal combustion engine, the torque transmission mechanism comprising: a ring gear that transmits the starting torque; a one-way clutch disposed between the ring gear and the crankshaft, the one-way clutch including an inner ring and an outer ring, the ring gear comprising lubrication holes adapted to allow lubricant to go from the internal combustion engine towards the one-way clutch, the one-way clutch further including a plurality of sprags disposed between the outer ring and the inner ring; and at least one sealing element adapted to prevent lubricant from passing between an outer surface of the outer ring of the one-way clutch and an inner surface of the ring gear, wherein the outer ring of the one-way clutch comprises a chamfered surface inclined with respect to a central axis of the torque transmission mechanism, the chamfered surface diverging with respect to the central axis of the torque transmission mechanism from the lubrication holes of the ring gear towards the sealing element, wherein a radially-inner extent of at least one of the lubrication holes is aligned with at least one of the plurality of sprags, and wherein a radially-outer extent of the at least one of the lubrication holes is radially outward of a radially-inner extent of the chamfered surface.