Transmitting system for small-sized vehicle

Details Transmitting system for small-sized vehicle Transmitting system for small-sized vehicle

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 45/02 (2006.01) B60K 17/02 (2006.01) B62M 7/02 (2006.01) F02B 61/02 (2006.01) F16D 33/06 (2006.01) F16H 41/04 (2006.01) F16H 47/06 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2289439

In a transmitting system for a small-sized vehicle in which a crankshaft of an engine and an input shaft of a multi-stage transmission are connected to each other through a fluid transmitting device, the fluid transmitting device and a shifting clutch are mounted on the crankshaft. One of the fluid transmitting device and the shifting clutch is connected to the crankshaft, while the other is connected the input shaft of the multi-stage transmission through a primary reducing device. Provided in the crankshaft are an upstream supply oil passage connected to an oil pump, a downstream supply oil passage connected to portions to be lubricated of the engine, a flow-in bore which permits the upstream supply oil passage to communicate with the inside of the fluid transmitting device, and a flow-out bore which permits the inside of the fluid transmitting device to communicate with the downstream supply oil passage. Thus, when the multi-stage transmission is to be shifted, a shifting operation can be conducted lightly, irrespective of a creep phenomenon of the fluid transmitting device by bringing the shifting clutch into its OFF state. Moreover, lubricating oil for the engine can be utilized to operate the fluid transmitting device and hence, an exclusive oil pump for the fluid transmitting device is not required.

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