Single rocker shaft allowing central spark plug...

Details Single rocker shaft allowing central spark plug... Single rocker shaft allowing central spark plug...

F - Mech Eng,Light,Heat,Weapons

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F01L 1/26 (2006.01) F01L 1/053 (2006.01) F01L 1/18 (2006.01) F01M 9/10 (2006.01) F02F 1/42 (2006.01) F02B 1/04 (2006.01) F02B 75/20 (2006.01) F02F 1/24 (2006.01)

Patent

CA 1272087

ABSTRACT An OHC type internal combustion engine with four valves per cylinder in which a single cam shaft and a single rocker arm shaft are mounted directly above one another and centered above the cylinders. A single rocker arm actuates the pair of exhaust valves of each cylinder and a pair of spaced rocker arms operates the pair of intake valves. The spark plug is mounted in the center of the combustion chamber ceiling and inclined toward the intake valve side to be accessible between the pair of rocker arms. Lubrication to all of the valve actuating components is provided from a main oil passage formed by the tubular rocker arm shaft with ports extending to and nozzles direct at all the relatively moving components.

480379

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