Patent ID: 8191517

Claim:
A dual chamber cylinder engine/compressor comprising: a housing having a first cylindrical cavity and at least a second cylindrical cavity each said cylinder cavity has a piston that divides each said cylindrical cavities into an upper chamber and a lower chamber; at least one head on top of said upper cylindrical chamber for enclosing a said cylindrical chambers; each piston each having piston rods extending in a fixed perpendicular orientation from a bottom of each piston; a low friction seal located on a bottom of each of said cylinders to allow sealed constrained linear movement of said piston rod(s); said separate piston rods are secured to an elliptical shaft to convert reciprocating rectilinear motion into rotary motion; an inlet and an inlet check valve on each of said lower chamber cylindrical cavities for bringing air into said lower chamber when said pistons are on an up stroke; an outlet and an outlet check valve on said lower chamber cylindrical cavities wherein compressed air is pushed out through said outlet and outlet check valve when said pistons are on a down stroke; said compressed air from a first lower chamber is transferred to a first upper chamber of the same and or a separate cylindrical cavity (ies); at least one spark plug and at least one fuel injector located in said head, and wherein said compressed air is used to supercharge said engine.