DEVICE FOR SUPPLYING GAS TO INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: supply systems of cars working both on gasoline and on gas. SUBSTANCE: device has pressure-reducing valve 6, carburetor-mixer 8 with main air passage 7 and throttle valve 21, main 4 which brings low-pressure chamber 5 of pressure-reducing valve in communication with main air passage, meter 1 with plunger 3 mounted in the main and plunger drive 2 made in form of hollow housing 9 divided into chambers by diaphragms 10 and 11. Diaphragm 11 is connected with plunger and separates service chamber 13 which is brought in communication with main 4 from the chamber of the housing; diaphragm 10 separates additional chamber 16 from the chamber of the housing. Chamber between these diaphragms is divided into two parts by partition 12 forming command chamber 14 between diaphragm 11 and partition and central chamber 15 between diaphragm 10 and partition. Central and command chambers are brought in communication through jet 22; command chamber is brought in communication with additional chamber 16 and after-throttle valve space 20 of the carburetor-mixer. Diaphragm 10 is kinematically linked with plunger and with diaphragm 11. EFFECT: enhanced efficiency of engine through enhanced pick-up at the acceleration mode. 1 dwg