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US 5,213,067 AGranted
Internal combustion engine
OwnerLouis E. Kramerinventor
Life of this patent
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OwnerLouis E. Kramerinventor
Estimating the term…
An internal combustion engine is provided having opposed pistons operating in axially spaced relation within common power cylinders. Opposed heads of the pistons define a space within which occurs a cycle of compression, ignition, combustion, and expansion. One piston controls exhaust ports, and the other piston controls air injection and fuel-air charge injection ports. Additional air injection ports, and associated supply passages or tubes, are provided to admit compressed air over the head of the exhaust piston to cool the exhaust piston head and also form a gas flow inhibiting region below the exhaust port, near the end of the power/exhaust stroke. Rotary valves control the in-flow of air and air-fuel charge to charging cylinders. Air injection ports have an optional improved construction to enhance air injection into the power cylinders. Throttle valves controlling flow of air into purge air charging cylinders are provided as an option. Water injection, particularly into the purge air, is a further option. An optional mechanism can be added for changing the phase relationship between the two opposed pistons in a common cylinder, whereby timing of opening of the exhaust port and the auxiliary air injection port can be changed according to changes in engine r.p.m.
In an opposed piston two cycle engine of the type having a cylinder and a pair of pistons operating in counter movement within said cylinder, there being an exhaust port from said cylinder controlled by one of said pistons and a charging port controlled by the other of said pistons, said pistons having main heads defining between them a combustion chamber, and there being an air inlet port adjacent said charging port and closer to said combustion chamber than said charging port;
The method of operating an opposed piston two cycle engine of the type having a cylinder and a pair of pistons operating in counter movement within the cylinder, there being an exhaust port from the cylinder controlled by one of the pistons and a charging port controlled by the other of the pistons, the pistons having main heads defining between them a combustion chamber, and there being an air inlet port adjacent the charging port and closer to the combustion chamber than said charging port and an auxiliary air inlet port located near the end of the path of the one piston on the opposite side of the exhaust port from the combustion chamber and controlled by the one piston, and a means for supplying compressed air to each of the air inlet ports;
In an opposed piston two cycle engine of the type having a cylinder and a pair of pistons operating in counter movement within said cylinder, there being an exhaust port from said cylinder controlled by one of said pistons and a charging port controlled by the other of said pistons, said pistons having main heads defining between them a combustion chamber, and there being an air inlet port adjacent said charging port and closer to said combustion chamber than sad charging port, a crankshaft and connecting rod system attached to said pistons to cause 180.degree. out of phase motion of said pistons,;
In an opposed piston two cycle engine of the type having a cylinder and a pair of pistons operating in counter movement within said cylinder, there being an exhaust port from said cylinder controlled by one of said pistons and a charging port controlled by the other of said pistons, said pistons having main heads defining between them a combustion chamber, and there being an air inlet port adjacent said charging port and closer to said combustion chamber than said charging port, a crankshaft and connecting rod system attached to sad pistons to cause 180.degree. out of phase motion of said pistons,;
In an opposed piston two cycle engine of the type having a pair of power cylinders each having a pair of main pistons with opposed heads operating in counter movement within the associated said power cylinder, a crankshaft and connecting rod system attached to said main pistons to cause 180.degree. out of phase motion of each pair of main pistons, each power cyliner having an exhaust port from said power cylinder controlled by one of the pair of said main pistons and a charging port controlled by the other of the same pair of said main pistons, said main pistons having main heads defining between them central combustion chambers in each of said power cylinders, each said power cylinder having an air inlet port adjacent said charging port and closer to said combustion chamber than said charging port, a pair of charging cylinders located at opposite ends of each of said power cylinders, and charging pistons operating in said charging cylinders and connected to and movable with said main pistons;
Dependencies are inferred from the claim text.