PNEUMATIC SYSTEM FOR FEEDING REDUCING AGENT Russian patent published in 2016 - IPC F01N3/20 F01N9/00 F04B13/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to reducing agent introduction into internal combustion engine exhaust gases processing system. Device for feeding reducing agent in system for processing exhaust gases of internal combustion engine consists of tank for reducing agent; pneumatic source; hydraulic pump with pneumatic drive, in which first inlet channel communicates with tank for reducer via check valve, and second inlet channel communicates with air source, first discharge channel produces compressed air from hydraulic pump with pneumatic drive, and second discharge channel provides flowing of reducing agent, located inside hydraulic pump with pneumatic drive. Injector for regulating flow of reducing agent fed to exhaust gas processing system; controller configured to control pressure reducer regulating air flow coming from said pneumatic source in hydraulic pump operated in second inlet channel, and air flow supplied by first outlet channel, and configured to control volume of dispensing reducing agent fed to exhaust gas processing system, by controlling time of opening of injector. Also disclosed is method of controlling fluid feed system.

EFFECT: provision of efficient spraying of reducing agent and simplification of reducer dispensing system.

20 cl, 17 dwg, 1 tbl