Patent ID: 8573085
Filing Date: 2013-11-05
Classification: F16H,Y10T

Abstract:
1. A power unit for a vehicle, said power unit comprising: a crankcase; a crankshaft disposed in the crankcase; a first main shaft, a second main shaft and a single countershaft that are rotatably supported by said crankcase with their axes being parallel to each other; a plurality of multispeed gears that are selectively established and provided among the first main shaft, the second main shaft and the countershaft; a primary reduction gear mechanism; a single driving gear that makes up a part of said primary reduction gear used to transmit rotary power from the crankshaft to the first and second main shafts, said single driving gear being provided on the crankshaft; and first and second clutches that are operable to selectively transmit or interrupt a transfer of rotary power from the primary reduction gear mechanism to the first and second main shafts, said first and second clutches disposed at ends of the first and second main shafts, respectively, wherein the primary reduction gear mechanism comprises: wherein the first clutch is provided between the first driven gear and first main shaft, and wherein the second clutch is provided between the second driven gear and the second main shaft.