Patent ID: 11885378
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An internal combustion engine, comprising:
a plurality of in-line cylinder units;
each one of the cylinder units having:
a bore having a bore axis;
a piston disposed in the bore that reciprocates within the bore along the bore axis, the piston having a head and a connecting boss extending from a bottom of the head;
a piston connecting frame member having a top boss that is centrally located on the piston connecting frame member and that is coupled to the connecting boss of the piston, the piston connecting frame member further having a pair of lateral portions extending outward in opposing directions, each lateral portion having a vertical end face with a respective vertical linear bearing mounted on the vertical end face, the piston connecting frame member further having a bottom on which a bottom linear bearing is mounted; and
a crank connecting member having a lateral rail at a top of the crank connecting member, wherein the lateral rail is captured at a bottom of the piston connecting frame member and reciprocates laterally along the bottom of the piston connecting frame member, the crank connecting member further having a crank throw opening to connect to a throw of a crankshaft, wherein the crank connecting member includes an oil groove formed in a crank journal, and further includes at least one oil passage to the lateral rail, and wherein the at least one oil passage to the lateral rail is open at the lateral rail.