Lubrication system of small vehicle engine

Details Lubrication system of small vehicle engine Lubrication system of small vehicle engine

2007-09-11

2007-09-11

Nguyen, Hai (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

C123S1960CP

Reexamination Certificate

active

11527383

ABSTRACT:
A lubrication system of a vehicle engine wherein a cylinder head has a head side oil passage disposed at one end thereof along the axis of a crankshaft. A lower case of a crankcase is provided with a supply source side oil passage communicating with an oil supply source and extending parallel to the axis of the crankshaft and a branched oil passage guiding oil to the head side oil passage which branches from the supply source side oil passage and extends upwardly. An upper case side oil passage extending vertically to communicate with a head side oil passage is provided at one end of an upper case along the axis of the crankshaft. A communication passage communicating the upper end of a branched oil passage is provided in a lower case in a position inwardly from the upper case side oil passage along the axis of the crankshaft.

REFERENCES:
patent: 7100562 (2006-09-01), Terada et al.
patent: 2004/0069260 (2004-04-01), Fujikubo
patent: 2004/0069266 (2004-04-01), Fujikubo
patent: 2004-100630 (2004-04-01), None

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