DEVICE TO FEED GASEOUS FUEL INTO ICE WITH GAS AND AIR FLOW RATE RATIO REGULATOR Russian patent published in 2009 - IPC F02M51/06 

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production. Proposed gaseous fuel feed device incorporating gas and air flow rate ratio regular comprises gas inlet pipeline and metering element with adjusting screw which, when unscrewed, opens gas flow passage. ICE gas and air flow rate ratio regular comprises casing arranged above air inlet branch pipe with its cross section varying regulator piston screw driven by step motor. Engine is controlled by air and gas flow rate pickup that comprises moving plates arranged in gas feed pipeline and air feed branch pipe, their position being varied depending upon gas and air flows acting on them to operated metering device. The latter comprises LED and phototransistor coupled with the latter, to send appropriate signal, via electronic circuitry, to step motor, and to screw screwing in or out. Conditions of operation of above described regulator are subject to the following terms, i.e. F_air= F_gas, where F_air is airflow force, F_gas is gas flow force acting on regulator moving plates. Air and gas flow rate pickup comprises casing that accommodates moving plate axles running in bearings arranged at the casing bottom part. The casing lower part has opposite holes to house LED and phototransistor. Aforesaid axles move in hole made along pickup casing axis. Pickup equilibrium is resumed when LED screens the axis to shut off photoresistor.

EFFECT: fuel feed system incorporating fuel feed regulators with mass or volumetric airflow rate pickups.

6 dwg