Method for using two connecting rods per piston on an opposed piston engine.

Name of the inventor or inventors:
Brendan Lenski

Date of invention:
30 September 2009

Internal combustion engines require connecting rods to actuate its pistons; conventional engines use one connecting rod per piston. In the opposed piston internal combustion engine, when a crank shaft is located astride the cylinder, multiple connecting rods are required per piston.

Existing solution(s) use three or four connecting rods to connect the crankshaft to the pistons in an opposed piston engine. The proposed method allows the number of connecting rods per piston to be reduced to two.

By bending the body of the connecting rod in the plane formed by the small end axis and big end axis only two connecting rods per piston are necessary to connect the piston to the crankshaft. The method also retains symmetrical support for the piston pin. This method reduces part count and allows for a shorter crankshaft by reducing the distance between main bearing support.