Patent ID: 6129059
Filing Date: 2000-10-10
Classification: F02B,F02M,Y02T

Abstract:
A 2-stroke cycle internal combustion engine in a saddle riding type vehicle comprising:a combustion chamber;a high pressure chamber;a communicating passage for communicating said combustion chamber with said high pressure chamber;an intake control valve for opening and closing said communicating passage;a fuel supplying device for supplying fuel to said combustion chamber through said communicating passage and said intake control valve;a crankshaft, the engine mounted on the vehicle with said crankshaft extending in a width direction of the vehicle;a cylinder, said cylinder slightly inclined toward a forward side of the vehicle, said communicating passage extends from said cylinder to said high pressure chamber, said high pressure chamber located forward of said cylinder;an opening of said communicating passage to the combustion chamber is arranged nearer to a top dead center position than a scavenging port, said intake control valve is arranged near said opening of said communicating passage; andan exhaust pipe communicating with an exhaust passage of said engine and an exhaust expansion chamber are located rearward of said cylinder.