Patent ID: 7047916

Claim:
A two-stroke internal combustion engine comprising: a first cylinder and a second cylinder arranged on a common axis; a first piston pair comprising a first piston and a second piston located in the first cylinder and defining a first combustion chamber, the first piston and the second piston of the first piston pair moving in opposite directions within the first cylinder; a second piston pair comprising a first piston and a second piston located in the second cylinder and defining a second combustion chamber, the first piston and the second piston of the second piston pair moving in opposite directions within the second cylinder, wherein the first piston of the first piston pair is connected to the second piston of the second piston pair by a first connecting rod, and the second piston of the first piston pair is connected to the first piston of the second piston pair by a second connecting rod; and a fuel supply connected to at least one of the first cylinder or the second cylinder, the fuel supply comprising an injection nozzle that injects fuel along an axis that is angled toward the first piston with respect to the common axis; wherein at least one of the first cylinder or the second cylinder includes a first end and a second end, and includes a plurality of inlet openings defining an inlet plane proximate the first end, and a plurality of exhaust openings located proximate the second end, and the fuel supply injects fuel proximate to the first end.