Patent ID: 6325190
Filing Date: 2001-12-04
Classification: B62K,B62M,F02B,F16H

Abstract:
A transmitting system for a small-sized vehicle having an engine and a multi-stage transmission said transmitting system comprising a crankshaft of said engine, an input shaft of said multi-stage transmission, a shifting clutch and a primary reducing device, wherein said input shaft is disposed in parallel to said crankshaft and said crankshaft and input shaft are connected to each other through a fluid transmitting means, said fluid transmitting means including a pump impeller leading to said engine, and a turbine impeller leading to said multi-stage transmission, said fluid transmitting means and said shifting clutch being mounted on said crankshaft of said engine and connected in series to each other, one of said fluid transmitting means and said shifting clutch being connected to said crankshaft, and the other being connected to said input shaft of said multi-stage transmission through said primary reducing device; and said crankshaft is provided with an upstream supply oil passage connected to a discharge port in an oil pump driven by said engine, a downstream supply oil passage connected to portions to be lubricated around said crankshaft, a flow-in bore which permits said upstream supply oil passage to communicate with an oil chamber defined between the pump impeller and said turbine impeller of the fluid transmitting means, and a flow-out bore which permits said oil chamber between the pump impeller and said turbine impeller to communicate with said downstream supply oil passage.