초록 ▼

An engine structure and mechanism that operates on various combustion processes in a two-stroke-cycle without supplemental cooling or lubrication comprises an axial assembly of cylindrical modules and twin, double-harmonic cams that operate with opposed pistons in each cylinder through fully capture

An engine structure and mechanism that operates on various combustion processes in a two-stroke-cycle without supplemental cooling or lubrication comprises an axial assembly of cylindrical modules and twin, double-harmonic cams that operate with opposed pistons in each cylinder through fully captured rolling contact bearings. The opposed pistons are double-acting, performing a two-stroke engine power cycle on facing ends and induction and scavenge air compression on their outside ends, all within the same cylinder bore. The engine includes a novel intake/exhaust valve configuration, a novel combustion chamber configuration and a novel external piston rod alignment structure comprising a cam follower assembly including a pair of needle roller bearings riding in longitudinal grooves machined in the cam follower body.

대표청구항 ▼

[ What is claimed is:] [1.] A reciprocating internal combustion engine comprising:at least one cylinder having at least one piston in said cylinder, said piston comprising a piston rod having a first end and a second end and a piston head rigidly attached to said first end of said piston rod;a cam h

[ What is claimed is:] [1.] A reciprocating internal combustion engine comprising:at least one cylinder having at least one piston in said cylinder, said piston comprising a piston rod having a first end and a second end and a piston head rigidly attached to said first end of said piston rod;a cam housing;at least one barrel cam mounted within said cam housing on a cam shaft parallel with said cylinder and connected to said second end of said piston rod to impart reciprocating axial motion thereto;a crosshead at a first cylinder end, said crosshead having a bearing adapted to guide said piston rod;a cam follower assembly attached to said second end of said piston rod, said cam follower assembly comprising a follower body having guide grooves therewithin and a pair of cylindrical needle roller guide bearings affixed to said cam housing, each of said needle roller guide bearings having an outer race conforming to one of said guide grooves and riding therewithin.