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US 6,742,482 B2Granted
Two-cycle internal combustion engine
OwnerJorge Artolainventor
Life of this patent
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OwnerJorge Artolainventor
Estimating the term…
A two-cycle engine having improved performance characteristics includes a block and a cylinder head coupled to the block, the cylinder head defining a cylinder bore and a precombustion chamber. The head of piston located in the cylinder bore divides the bore into first and second variable volume intake chambers. An intake port allows fresh air to be drawn into the variable volume intake chamber and be compressed by the moving piston and delivered to the precombustion chamber. Fuel is added to the compressed air, which is heated, and then delivered to the variable volume combustion chamber. In one embodiment, the piston drives a crankshaft which is mounted both for rotation and for translation. Another embodiment of the invention is a lubricating system for a piston where movement of the piston up and down generates a pumping effect moving lubricant through the piston for lubricating piston rings.
A two-cycle internal combustion engine comprising a block, at least one cylinder head mounted to said block, a piston movably mounted in a bore defined by said cylinder head, said piston dividing said bore into a first variable volume intake chamber and a second variable volume combustion chamber, said cylinder head further defining a precombustion chamber, said precombustion chamber selectively in communication with said first variable volume intake chamber and said second variable volume combustion chamber, at least one valve member for selectively permitting a compressed charge of air to flow into said precombustion chamber from said first variable volume intake chamber and from said precombustion chamber to said second variable volume combustion chamber, and at least one fuel delivery element adapted to deliver fuel into said air for at least partial combustion in said second variable volume combustion chamber for moving said piston in said bore, said piston connected to a crankshaft and moving said crankshaft as a result of said movement in said bore.
An internal combustion engine comprising a block, at least one head connected to said block and defining a cylinder bore, a piston movably mounted in said cylinder bore, said piston connected to a crankshaft, said block including a first block gear and a second block gear, said crankshaft having a first end and a second end, at least one piston mounting portion located between said ends and positioned along a first axis offset from a second axis through said first and second ends, a first crankshaft gear located at said first end of said crankshaft, said first crankshaft gear smaller than said first block gear and engaging said first block gear, and a second crankshaft gear smaller than said second block gear and located at said second end of said crankshaft, said second crankshaft gear engaging said second block gear, whereby movement of said piston causes said crankshaft to rotate about said second axis and said second axis to move in a generally circular pathway.
A lubricating system for a piston of an internal combustion engine, said piston having a head and a rod, a first end of said rod coupled to said head and a second end of said rod located opposite said first end thereof, a passage through said rod generally extending from said first end to said second end, an inlet leading from an exterior of said second end to said passage, at least one delivery passage located in said head and extending from said passage in head and returning to said passage in said rod, and an outlet from said passage in rod, at least one partition dividing said passage through said rod into an inlet passage leading from said inlet to said delivery passage and an outlet passage leading from said delivery passage to said outlet, and at least one lubrication directing element located in said inlet passage and outlet passage, said at least one lubrication directing element generally inhibiting the flow of lubricant from said delivery passage to said inlet and from said outlet to said delivery passage.
A two-cycle internal combustion engine comprising a block having a first end and a second end, a crankshaft rotatably supported by said ends of said block, said crankshaft having a first end with a gear thereon engaging a first block gear at said first end of said block and said crankshaft having a second end with a gear thereon engaging a second block gear at said second end of said block, said crankshaft including at least one piston mounting portion, said at least one piston mounting portion extending along a first axis offset from a second axis through said ends of said crankshaft, said crankshaft rotatably supported by said block with at least one eccentric bearing permitting said crankshaft to rotate about said second axis and to translate, at least one piston connected to said at least one mounting portion of said crankshaft, said piston including a rod connected to said crankshaft and a head, said head located in a cylinder bore defined by a cylinder head connected to said block, said cylinder bore generally closed at a top end and a bottom end thereof, said head of said piston dividing said cylinder bore into a variable volume intake chamber below said head and a variable volume combustion chamber above said head, an intake port leading from an exterior of said engine to said variable volume combustion chamber and a valve adapted to selectively open and close said intake port, said cylinder head defining a precombustion chamber, a compression port leading from said variable volume intake chamber to said precombustion chamber, a bi-directional port leading from said precombustion chamber to said variable volume combustion chamber, at least one valve adapted to selectively open and close said compression port and bi-directional port, a fuel delivery mechanism adapted to deliver fuel into said precombustion chamber, and a cam rotated by said crankshaft and arranged to drive said at least one valve adapted to selectively open and close said compression port.
A method of operating an internal combustion engine including a piston movably mounted in a cylinder bore, said piston connected to a crankshaft comprising:
Dependencies are inferred from the claim text.