Lubrication device for crank chamber supercharged engine

Claim 1

An internal combustion engine comprised of a cylinder block, cylinder head assembly defining a cylinder bore, a piston reciprocating in said cylinder bore and forming a combustion chamber at one end of said cylinder bore, a crankcase chamber formed at the other end of said cylinder bore and containing a rotatably journaled crankshaft, a connecting rod for connecting said piston to said crankshaft for driving said crankshaft upon reciprocation of said piston, said connecting rod, said piston and said crankcase chamber being formed so that said crankcase chamber functions as a compressor as said piston reciprocates in said cylinder bore, said crankcase chamber forming a portion of an induction system for delivering atmospheric air under pressure to said combustion chamber, said induction system comprising in addition to said crankcase chamber an atmospheric air inlet for supplying atmospheric air to said crankcase chamber and a pressure air conduit for communicating compressed air to said combustion chamber through a poppet type intake valve reciprocally supported in said cylinder head, a valve actuating mechanism contained within said cylinder head for effecting opening and closing of said poppet type intake valve and driven in timed relationship to said crankshaft, a first lubricating system for delivering lubricant from a first lubricant reservoir to said cylinder head for lubricating said valve actuating mechanism, return means for returning lubricant from said engine to said first lubricant reservoir, said first lubricant reservoir containing a first type of lubricant for lubricating said engine, a second lubricant reservoir, means for delivering lubricant from said second lubricant reservoir to said engine through said crankcase chamber for lubricating components contained therein, said second lubricant reservoir containing a lubricant different from the lubricant contained in said first lubricant reservoir.