Patent ID: 6918358

Claim:
An multi-cycle, reciprocating piston-type, internal combustion engine comprising at least one master cylinder which includes a reciprocating piston being connected to a crankshaft, and at least one slave cylinder which includes a reciprocating piston being connected to said crankshaft; and an overhead valve means for admission of gases of air and fuel mixture to said master cylinder and admission of air only to said slave cylinder and discharge of exhaust gases from said slave cylinder; wherein the engine comprises at least two cylinders disposed to form a pair, one being said master cylinder adjacent the other, said other being said slave cylinder; and, means for coordinating exchange of gases between said master cylinder and adjacent said slave cylinder, said means for coordinating exchange of gases being a coordinate valve means at a side of said master cylinder, said coordinate valve means including a passage port of sufficient size to permit flow of gases therethrough between said slave cylinder and said master cylinder, said passage port channelling gases through said valve from said master cylinder to said slave cylinder, said coordinate valve means being open at approximately 420 degrees of cycle revolution for initiating a flow of compressed air from said slave cylinder to said master cylinder, said flow of compressed air from said slave cylinder being substantially completed by 450 decrees of cycle revolution.