FUEL SYSTEM Russian patent published in 2007 - IPC F02M21/02 

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relates to system delivering fuel and fuel-gas mixture into internal combustion engines. Proposed system contains devices delivering diesel fuel into, devices delivering liquefied gas simultaneously with delivery of diesel fuel into engine. Devices for delivering liquefied gas include nozzle to inject liquefied gas into engine and nozzle controls, and also devices for cooling liquefied gas so that evaporation of liquefied gas delivered into nozzle is prevented and no gas bubbles are formed. Nozzle for injecting liquefied gas into engine has nozzle body, channel made in nozzle body provided with seat of shutoff needle defining the hole, shutoff needle arranged in channel and designed for closing hole in seat and installed for displacement from seat of shutoff needle to open the hole and provide possibility of passing of liquefied gas for injection by nozzle, devices for shifting shutoff needle from position far from seat of shutoff needle to position in which shutoff needle is pressed to and back for selective opening and closing of nozzle, and nozzle hole communicating with channel to provide passing of liquefied gas into nozzle body through hole and into channel in direction cross to shutoff needle. Passage in nozzle body is directed from channel to upper part of nozzle body to provide displacement of bubbles from area near hole through channel and into upper part of nozzle body. Other design versions of system and nozzle are presented in claims 14, 15, 19, 26, 29, 34, 38.

EFFECT: reduced consumption and cost of fuel.

45 cl, 8 dwg