Lubricating and sealing system for internal combustion engines
OwnerFrederick C. Melchiorinventor
Life of this patent
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Abstract
A lubrication and sealing system for the cylinder head of an internal combustion engine having a sleeve valve mounted for rotation therein, said sleeve valve having intake slots therethrough which register periodically, as the valve rotates, with air intake ports in the cylinder to permit air to enter the cylinder. The sleeve valve is provided with one or more helically shaped sealing rings carried in the wall of the valve facing the wall of the cylinder, which said rings, as the valve rotates, sweep the wall of the cylinder to circulate lubricant oil within the clearance space between the valve and the cylinder to thereby lubricate and seal the clearance space. The circulation of lubricant also has a beneficial cooling effect.
Claims7
An internal combustion engine comprising a piston and cylinder, said cylinder having a plurality of intake ports extending through the wall near the upper end thereof, said ports being spaced at intervals around the circumference of the cylinder, a cylindrical sleeve surrounding the outside wall of said cylinder with a cylindrical clearance space therebetween, means for mounting said sleeve valve for rotation with respect to said cylinder, said sleeve valve having a plurality of intake slots extending therethrough which register periodically with said intake ports as said sleeve valve rotates, and means for lubricating and sealing the portion of said clearance space above said intake ports, said means including a helically shaped ring mounted in a helical groove in the inside wall of said sleeve valve near the upper end of said valve with the lower ends of said ring and groove terminating above said intake ports and extending across said clearance space above said intake ports to wipe only the portion of the opposed surface of the cylinder above said intake ports as said sleeve valve rotates.
Dependencies are inferred from the claim text.