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US 2019/0376446 A1Published application
Two-stroke engine having fuel/air transfer piston
OwnerRoland Clarkinventor
Life of this patent
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Abstract
A two-stroke engine includes an engine block which defines a fuel/air transfer cylinder and a combustion cylinder. A piston is operative within the combustion cylinder in a two-stroke power producing manner while a fuel/air transfer piston is operative within the fuel/air transfer cylinder to inject fuel/air mixture into the combustion cylinder. The engine further includes a cylinder head which supports a plurality of movable valves to control the flow of air and fuel through the engine.
Claims1
A two-stroke engine comprising:
- an engine block defining a combustion cylinder bore and a transfer cylinder bore;
- a cylinder head supported upon said engine block overlying said combustion cylinder bore and said transfer cylinder bore defining a first cylinder head volume aligned with said combustion cylinder bore and a second cylinder head volume aligned with said transfer cylinder bore, an intake port extending from said second cylinder head volume, an exhaust port extending from said first cylinder head volume, and a transfer port extending between said first cylinder head volume and said second cylinder head volume;
- a first intake valve supported within said cylinder head providing closure of said transfer port;
- an exhaust valve supported within said cylinder head providing closure of said exhaust port;
- a fuel igniter supported within said cylinder head and extending into said first cylinder head volume;
- a second intake valve supported within said cylinder head providing closure of said intake port;
- a crankshaft rotatably supported upon said engine block having first and second eccentric crankshaft lobes;
- a combustion cylinder piston movable within said combustion cylinder bore and a first connecting rod coupling said combustion cylinder piston to said first eccentric crankshaft lobe;
- a transfer cylinder piston movable within said transfer cylinder bore and a second connecting rod coupling said transfer cylinder piston to said second eccentric crankshaft lobe;
- and
- a camshaft rotatably coupled to said crankshaft operative to open and close said first and second intake valves and said exhaust valve.
8 more elements
Dependencies are inferred from the claim text.