Patent ID: 7287496
Filing Date: 2007-10-30
Classification: F01L

Abstract:
1. An internal combustion engine comprising: a valve system comprising a cylindrical valve shaft, the cylindrical valve shaft having a cylindrical surface that extends along a central axis along the cylindrical valve shaft, the cylindrical surface containing at least two recessed areas, each being concave cylindrical recesses, the recessed areas being at one hundred eighty degrees to one another along the axis of the valve shaft, the recessed areas extending approximately ninety degrees along an arc about the central axis and along the cylindrical surface; a valve support head that supports the cylindrical valve shaft, the valve support head including an intake port having an entry that has been adapted to terminate along the cylindrical surface of the cylindrical valve shaft, and an exhaust port, the exhaust port terminating along the cylindrical surface of the cylindrical valve shaft, the intake port and the exhaust port each extending approximately forty five degrees along a chord along the surface of the cylindrical valve shaft, measured about the axis of the cylindrical valve shaft; a combustion chamber that is in fluid communication with said intake port and said exhaust port, the combustion chamber including a cylinder and a piston that is slide-ably mounted within the cylinder, the intake port and the exhaust port being generally parallel to one another and generally parallel to the cylindrical valve shaft, the intake port and the exhaust port being at different locations along the cylindrical valve shaft, and the intake port and the exhaust port being on opposite sides of the central axis of the valve shaft, such that the intake port and the exhaust port lie on diagonally opposite quadrants of the valve support head, the piston being connected to a connecting rod that is in turn connected to a crankshaft that is also connected to the cylindrical valve shaft.