Patent ID: 8474435

Claim:
An opposed piston engine, comprising: a plurality of cylinders aligned in a row, each cylinder having intake and exhaust ports, an intake manifold near an end of the cylinder and in communication with an intake port, and an exhaust manifold near an opposing end of the cylinder and in communication with an exhaust port, and in which the cylinders are aligned such that the intake manifolds are positioned near an intake side of the engine and the exhaust manifolds are positioned near an exhaust side of the engine; a pair of opposed pistons slidably disposed in each cylinder; two crankshafts positioned to one side of the row of cylinders so that the axes of rotation of the crankshafts lie in a plane that is spaced apart from and parallel to a plane in which the longitudinal axes of the cylinders lie; and, a linkage between each piston and a respective one of the crankshafts; a crosshead assembly for each linkage; in which each crosshead assembly comprises: spaced-apart opposing guides; a pin positioned between the guides; and, spaced-apart bearings; each bearing including a first edge mining the pin and a second edge slidably engaging a respective guide; and, in which each linkage comprises: a connecting rod having a first end with two spaced-apart collars that rotatably engage a pin between spaced-apart bearings and a second end rotatably engaging a throw of a crankshaft; and a piston rod with a first end affixed to a piston and a second end affixed to the pin between the spaced-apart collars of the connecting rod.