Patent ID: 7591235
Filing Date: 2009-09-22
Classification: F01P,F02B,F02F,F16H

Abstract:
1. An opposed piston engine including a crankshaft, a cylinder, a pair of opposed pistons disposed for reciprocal movement in the cylinder, and connecting rods coupled to the crankshaft, each piston including an elastically deformable member between the piston and a respective connecting rod; in which, each piston includes a cylindrical body with a skirt, an open end, and a closed end defining a crown, a piston rod with first and second ends, the first end attached to a back of the crown and the second end extending through the open end, and an associated wristpin attaching the second end to a respective pair of connecting rods, the elastically deformable member including a resiliently deformable boot retaining the first end; and, the piston rod includes a bore and the piston includes a longitudinal axis and an array of passages symmetrically disposed about the longitudinal axis and abutting the back surface of the crown, each of said passages being in fluid communication with the bore and opening to an inside surface of the skirt.