Two cycle engine lubricating system
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsKazutoshi Takashima, Tomohiro Kanamaru
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Abstract
A lubricating system for a reciprocating machine such as a two cycle internal combustion engine having the cylinder bores horizontally disposed. A drain system is provided for draining lubricant from the lowermost crankcase chambers to the upper cylinders so as to maintain uniformity of lubrication and insure even and smooth running. A check valve is provided for precluding reverse flow and the lubricant is delivered both to the crankcase chambers and to the piston through either the piston and/or cylinder liner. The lubricant supplied to the piston is supplied at its upper area so as to insure complete lubrication of its circumference and of the associated cylinder bore.
Claims32
A lubricating system for an internal combustion engine having at least two horizontally disposed cylinders, one disposed vertically above the other, each of said cylinders having a respective lubricated portion one disposed vertically above the other, means for delivering lubricant to said lubricated portions, means for draining lubricant from a lower area of the lower of said lubricated portions, and means for delivering the drained lubricant only to an upper area of the upper lubricated portion including a single uninterrupted flow conduit.
A two cycle internal combustion engine having a cylinder defining a cylinder bore, a piston reciprocating in said cylinder bore and sweeping a portion of the length of said cylinder bore, a passage extending through said piston for introducing lubricant into the swept area of said cylinder bore, and check valve means in said passage for permitting flow only from the interior of the piston to the exterior surface of said piston.
Dependencies are inferred from the claim text.