Patent ID: 6250262
Filing Date: 2001-06-26
Classification: F01B,F01C,F02B,F04B,F05C,Y02T

Abstract:
A two or four stroke internal combustion engine, said engine comprising:a crank shaft having a shaft axis about which said crankshaft rotates and having a crank axis oblique to the shaft axis but aligned to intersect therewith at X,an array of combustion chambers and associated piston assemblies, each piston assembly to reciprocate a piston in a respective combustion chamber, said piston assemblies to rotate as assemblies relative to and about said shaft axis, each said combustion chamber being of a cross section with respect to its reciprocal axis and complementary to the cross section of a respective piston,piston control means mounted to rotate about said crank shaft, each piston assembly connected to said piston control means by an intermediate connection rod, whereby during rotation said piston control means controls the piston moving motion between TDC and BDC as required for two or four stroke operation, in a manner such that midway between TDC and BDC the reciprocal axis of each piston is normal to a line projected from X,combustion chamber head means which holds each combustion chamber in said array, said head means including at least one port per combustion chamber, andport means providing a series of intake and exhaust ports each connected respectively to (i) an air intake or air and fuel mixture source and (ii) an exhaust system, said combustion chamber head means sealably rotatable and indexed by an indexing means relative to said port means to present, timed to the reciprocal movement of each piston in its respective combustion chamber and to the rotational position of each combustion chamber relative to said intake and exhaust ports, said intake and exhaust ports to said at least one port per combustion chamber as required for said two or four stroke cycle operation, whereinsaid piston control means is capable of conveying, via said connection rod, the reciprocal motion of each said piston to said crank shaft to provide rotational output power, andmeans is provided whereby said rotational output power can be taken off said combustion chamber head means or crank shaft or port means as each rotates relative to the other.