DIESEL ENGINE FUEL SYSTEM Russian patent published in 2008 - IPC F02M47/00 

FIELD: engines and pumps.

SUBSTANCE: diesel engine fuel system incorporates a high-pressure sectional pump with a distributing device made up of a body with inlet and outlet channels, the inlet channel communicating with the fuel pump appropriate section, a slide valve arranged in the body to rotate and axially move and furnished with distributing channels allowing communication between the body inlet and outlet channels, a drive rigidly linking the slide valve with the 2-to-1 transmission ratio camshaft, a jet, a high-pressure line communicating the jet with the distributing device outlet channel, the distributing device being furnished with the discharge outlet channel and throttling outlet channel arranged at the angle of 180 degrees relative to each other. At the slide valve first position, its blind axial channel communicates, via the third distributing channel and throttling outlet channel, with a low-pressure line, and, via the second distributing channel and the discharge outlet valve, with the jet via the high-pressure line. At the slide valve second position, the said valve blind axial channel communicates, via the first distributing channel and the discharge valve, with the jet by means of the high-pressure line. The distributing channels represent radial holes. The first hole is a isoscales triangle section opening, its triangle sides mating along a smaller radius, the second and third openings being oval in section with the triangle height and the oval larger axis being equal.

EFFECT: intensified fuel feed, larger intercycle stability and uniformity of fuel feed with a higher initial pressure in discharge line in intercycle interval.

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