INTERNAL COMBUSTION ENGINES
First Claim
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1. A 2-stroke internal combustion engine comprising:
- two opposed cylinders, each cylinder housing two opposed pistons and having at least one exhaust port and at least one intake port; and
a crankshaft having asymmetrically arranged journals and scotch-yoke mechanisms for driving the journals from the pistons,wherein, the pistons in each cylinder operate to open its exhaust port or ports before its intake port or ports and to close its exhaust port or ports before its intake port or ports.
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Abstract
The invention provides a 2-stroke internal combustion engine comprising two opposed cylinders, each cylinder housing two opposed pistons and having at least one exhaust port and at least one intake port, and a crankshaft having asymmetrically arranged journals and scotch-yoke mechanisms for driving the journals from the pistons. The pistons in each cylinder operate to open its exhaust port or ports before its intake port or ports and to close its exhaust port or ports before its intake port or ports.
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Citations
30 Claims
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1. A 2-stroke internal combustion engine comprising:
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two opposed cylinders, each cylinder housing two opposed pistons and having at least one exhaust port and at least one intake port; and a crankshaft having asymmetrically arranged journals and scotch-yoke mechanisms for driving the journals from the pistons, wherein, the pistons in each cylinder operate to open its exhaust port or ports before its intake port or ports and to close its exhaust port or ports before its intake port or ports. - View Dependent Claims (2)
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3. A 2-stroke internal combustion engine comprising:
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a crankshaft having a plurality of journals; two opposed cylinders having their inner ends adjacent to the crankshaft, each cylinder having inner and outer pistons reciprocatably disposed therein and forming a combustion chamber therebetween; first and second scotch-yoke mechanisms, rigidly attached to the inner pistons, which, acting in unison, drivingly couple the inner pistons to their corresponding journals on the crankshaft; and a third scotch-yoke mechanism, rigidly attached to the outer pistons, which drivingly couples the outer pistons to their corresponding journal on the crankshaft. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 28)
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25. A two-stroke internal combustion engine comprising:
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two opposed cylinders, each cylinder housing two opposed pistons and having one or more inlet ports and one or more outlet ports; and a crankshaft for driving the pistons, wherein each cylinder comprises a sleeve-valve drivable by the crankshaft to control the opening and closing of the inlet and exhaust port or ports. - View Dependent Claims (27)
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26. A two-stroke internal combustion engine comprising:
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two opposed cylinders, each cylinder housing two opposed pistons and having one or more inlet ports and one or more outlet ports; and a crankshaft having asymmetrically arranged journals for driving the journals from the pistons, wherein each cylinder comprises a sleeve-valve drivable by the crankshaft to control the opening and closing of the inlet and exhaust port or ports.
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29. A two-stroke internal combustion engine comprising:
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a crankshaft; and two opposed cylinders having their inner ends nearest to the crankshaft, each cylinder having inner and outer pistons disposed therein and forming a combustion chamber therebetween, wherein each outer piston is drivingly coupled to the crankshaft by a respective tubular member extending generally axially through the combustion chamber, and wherein fuel injection means housed within the tubular members are arranged to inject fuel radially outwardly into the combustion chamber.
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30. A two-stroke internal combustion engine, including:
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a crankshaft having a plurality of journals; two opposed cylinders having their inner ends adjacent to the crankshaft, each cylinder having inner and outer pistons disposed therein and forming a combustion chamber therebetween; first and second scotch-yoke mechanisms, rigidly attached to the inner pistons, which, acting in unison, drivingly couple the inner pistons to their corresponding journals on the crankshaft; and a third scotch-yoke mechanism, rigidly attached to the outer pistons, which drivingly couples the outer pistons to their corresponding journal on the crankshaft.
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Specification