Intake and Exhaust Valve System for an Internal Combustion Engine
AssigneeLse R&D Engineering Limited
InventorAllen Eugene Looney
Life of this patent
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Abstract
In an internal combustion engine, first and second rotating members, one for the intake valve and one for the exhaust valve rotate next to the outside of an engine cylinder on opposite sides thereof when driven by a drive gear attached to the end of the engine's crankshaft. Each rotating member may include a ring gear having a valve port or aperture near its perimeter that cyclically aligns with a corresponding valve port formed through the cylinder wall near the top of the cylinder. A method of controlling valve timing comprises the steps of causing the rotating member containing the second valve port to periodically align in synchronism with the first port to control the passage of an air/fuel mixture and exhaust gases through the combustion cycles of the engine.
Claims40
A valve system for an internal combustion piston engine having a crankshaft rotatably mounted in a crankcase portion of an engine block, and an engine cylinder formed within the engine block and open at a lower end thereof into the crankcase, comprising:
- a first port disposed through a side wall of the engine cylinder into an upper portion of the engine cylinder;
- and
- a second port disposed through a rotating port member along one radius of the rotating port member;
- wherein
- the rotating port member is disposed to rotate alongside the side wall of the engine cylinder such that the second port and the first port are in a communicating alignment keyed to revolution of the crankshaft.
A method for controlling valve timing in an internal combustion engine having a crankshaft rotatably mounted in a crankcase of an engine block, an engine cylinder formed within the engine block and open at a lower end thereof into the crankcase, and a combustion chamber firmed in an upper end of the engine cylinder, comprising the steps of:
- forming a first valve port into a side wall of the engine cylinder proximate the combustion chamber;
- forming a second valve port in a rotating port member disposed proximate the first valve port and the side wall of the engine cylinder;
- and
- causing the second valve port in the rotating port member to rotate in synchronism with the crankshaft such that the second valve port in the rotating port member is aligned at periodic internals with the first valve port to permit passage of intake or exhaust substances respectively in to or out from the engine cylinder.
Dependencies are inferred from the claim text.