Power unit for saddle-ride type vehicle

Details Power unit for saddle-ride type vehicle Power unit for saddle-ride type vehicle

2006-08-22

2006-08-22

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Cooling

With liquid coolant circulating means

C123S1960AB, C123S1960CP

Reexamination Certificate

active

07093569

ABSTRACT:
An internal combustion engine and a transmission are supported by a saddle-ride type vehicle body having a front wheel in a front portion thereof. An oil cooler is installed without interference with other parts such as, for example, an exhaust pipe and the front wheel. Further, the distance between a water pump and the oil cooler is made shorter to shorten the length of a cooling water pipe. The power unit includes a crank shaft, an output shaft disposed in a rear portion of the power unit to output torque produced by the crank shaft to the exterior through a transmission, a water pump is adapted to be rotated with the torque transferred thereto from the crank shaft, and an oil cooler mounted on a rear surface of the power unit in a vehicle advancing direction below the output shaft and at a position lower than the crank shaft.

REFERENCES:
patent: 4339964 (1982-07-01), Isaka
patent: 6257178 (2001-07-01), Laimbock
patent: 6499443 (2002-12-01), Kawamoto et al.
patent: 19910271 (2000-09-01), None
patent: 1394382 (2004-03-01), None
patent: 3 210019 (1991-09-01), None
patent: 2741078 (1998-04-01), None

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