Abstract: An air/gas premix burner, comprising: a fan for sending the air/gas mixture to a combustion head; a gas valve for regulating admission of the combustible gas; an air/gas mixer, which comprises a device for localized loss of pressure; and a combustion head. The premix burner is characterized in that the air/gas mixer comprises at least two channels for mixing the air with the gas; in addition, a channel is provided with an open/close element designed to regulate the flow rate of the mixture.

Abstract: A transmissible connecting mechanism having a cam plate and a lever are attached respectively to a lead air control valve shaft and an air-fuel mixture throttle valve shaft which are arranged so as to form an angle. A length of a contact element provided in the lever is extended in parallel to an axis of the air-fuel mixture throttle valve shaft, and the length of the contact element is such that the contact element and a cam surface formed in a cam plate are always brought into contact with each other. The lead air control valve shaft and the air-fuel mixture throttle valve shaft of the carburetor are connected in a transmissible manner, and it is possible to make a stratified scavenging two-cycle engine compact.

Abstract: A carburetor for a high performance vehicle includes an actuator lever mounted to a first valve linkage for rotating a first pair of carburetor butterfly valves and a crank mounted to a second valve linkage for rotating a second pair of carburetor butterfly valves, a cam mounted on the actuator lever for engaging and moving said crank and rotating said second pair of valves in response to the movement of the actuator lever, and a quick disconnect coupling between said actuator lever and said cam such that the cam is removable from said actuator lever and can be replaced by another cam.

Abstract: An internal combustion engine having a crankcase, a cylinder connected to the crankcase, a compressed air assisted fuel injection system connected between the crankcase and the cylinder, and a reciprocating piston head located in the cylinder. The improvement comprises a fuel delivery system having two carburetor sections with two interconnected rotatable shafts.