Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve

Child Classifications

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• F02M 11/02 with throttling valve, e.g. of flap or butterfly type, in a later stage opening automatically
• F02M 11/06 Other carburettors with throttling valve of flap or butterfly type
• F02M 11/08 Register carburettors with throttling valve movable transversally to air passage
• F02M 11/10 Register carburettors with rotatable throttling valves