Lubrication system for direct injected engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsNoriyoshi Hiraoka, Kazutoshi Takashima
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Abstract
A lubrication system for a direct injected two-cycle engine is disclosed having a lubricant pump adapted to discharge lubricant into each crankcase chamber of the engine through a port positioned immediately adjacent the downstream side of reed valves of the air intake system. The lubricant is injected in a direction generally coincident with the rotational direction of the crankshaft. Drain ports are positioned in the lowermost scavenge passage of each cylinder and communicate lubricant from the scavenge passage to a return port formed through the wall of a crankcase chamber.
Claims38
An internal combustion engine having at least one variable volume combustion chamber, the combustion chamber being defined by at least a pair of components that move relative to each other, and a crankcase enclosing a crankshaft therein and having an air guide, the crankshaft being connected to one of the combustion chamber components, the air guide communicating with an air inlet device through a valve that regulates air flow into the crankcase, the air guide further having a lubricant insertion port immediately adjacent a downstream side of the valve.
An internal combustion engine having at least one variable volume combustion chamber, the combustion chamber being defined by at least a pair of components that move relative to each other, and a crankcase enclosing a crankshaft therein and having an air guide, the air guide communicating with an air inlet device through a valve that regulates air flow into the crankcase, the crankcase including a means for inserting lubricant immediately adjacent a downstream side of the valve and a means for distributing lubricant in the crankcase.
An internal combustion engine having at least one variable volume combustion chamber, the combustion chamber being defined by at least a pair of components that move relative to each other, a crankcase enclosing a crankshaft therein and having an air guide, the crankshaft connected to one of the combustion chamber components, the air guide communicating with an air inlet device and adapted to conduct a flow of air into the crankcase, and a scavenge system adapted to supply air from the crankcase to the combustion chamber, the scavenge system including a drain port adapted to communicate lubricant away from the scavenge system.
An internal combustion engine having at least one variable volume combustion chamber, the combustion chamber being defined by at least a pair of components that move relative to each other, a crankcase enclosing a crankshaft therein and having an air guide, the air guide communicating with an air inlet device and adapted to conduct a flow of air into the crankcase, a scavenge system adapted to supply air from the crankcase to the combustion chamber, and means for conducting lubricant away from the scavenge system.
Dependencies are inferred from the claim text.