HIGH-PRESSURE CONNECTING STRUCTURE WITH INJECTOR HOLDER OF SYSTEM WITH COMMON FUEL LINE Russian patent published in 2013 - IPC F02M55/02 

FIELD: engines and pumps.

SUBSTANCE: proposed structure in large ICE comprises means of first pipe for fuel feed into at high pressure developed by system with common fuel line, into engine cylinder head, and means of second pipe for fuel feed at high pressure further inside cylinder head, into injector holder, for injection into engine cylinder. First end of second pipe means is connected with first pipe means while second end of second pipe means is directly connected with injector holder. Additionally, proposed structure comprises fastening means in threaded joint with cylinder head chamber first part for sealed fastening of first pipe means in injector holder. Note here that said fastening means locks increased part with appropriate reverse surface located in second pipe means. Chamber is communicated with injector holder via chamber second part while second pipe means are spaced from said chamber over its notable length between fastening means and injector holder. For better performances of second pipe means at thermal conditions change, definite deformation caused by fastening means is created to obtain minor bend of second pipe means with the help of selection of second pipe means length and second end making about 10-20 their diameters and by selection of chamber diameter to be 40-100% larger than that of second pipe means located therein.

EFFECT: higher reliability and simplified design.

8 cl, 1 dwg