Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves (F02M7/24 takes precedence)

Child Classifications

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• F02M 7/127 Altering the float-chamber pressure (enriching the fuel-air mixture during starting by depressing float to flood carburettor F02M1/18) since 1990 IPC+CPC Available in IPC and CPC
• F02M 7/133 Auxiliary jets, i.e. operating only under certain conditions, e.g. full power (means for enriching charge at high combustion-air flow F02M7/04; means for enriching charge on sudden throttle opening, i.e. at acceleration F02M7/06) since 1990 IPC+CPC Available in IPC and CPC
• F02M 7/14 with means for controlling cross-sectional area of fuel spray nozzle (dependent on air-throttle valve position F02M7/22) IPC+CPC Available in IPC and CPC
• F02M 7/18 with means for controlling cross-sectional area of fuel-metering orifice (dependent on air-throttle position F02M7/22) IPC+CPC Available in IPC and CPC
• F02M 7/22 fuel flow cross-sectional area being controlled dependent on air-throttle-valve position (the throttle valve being slidably arranged transversely to air passage F02M9/06) +1 CPC IPC+CPC Available in IPC and CPC