SYSTEM OF DIESEL ENGINE SUPPLY WITH VISCOUS AND LOW-VISCOSITY FUELS AND COOLING OF ITS NOZZLES WITH LOW-VISCOSITY FUEL Russian patent published in 2012 - IPC F02M43/00 

FIELD: engines and pumps.

SUBSTANCE: system of diesel engine supply with viscous and low-viscosity fuels and cooling of its nozzles by low-viscosity comprises autonomous circulation circuit (1) of low-viscosity fuel and pipeline (20) of viscous fuel. The circuit (1) of low-viscosity fuel and the pipeline (20) of viscous fuel comprise make-up facilities (3, 22), heat exchangers (4, 23), at least one of the following: a line to cool (7, 8) nozzles (9, 10), a bypass manifold of viscous fuel (26, 27) and a supply line (33, 34) of fuel injection devices (35, 36), control valves, deaerators (18, 31) and stop elements. Make-up facilities (3, 22) are made with the possibility of changing their efficiency while preserving pressures of fuel make-up specified values. The line to cool nozzles (7, 8) is simultaneously a bypass manifold of low-viscosity fuel. Control valves - throttles (15, 16; 49, 50; 59, 60; 28, 29) are installed at the outlet of fuel from the following: an export header (13, 14), drain nozzles and low-viscosity (45, 46) and viscous (55, 56) fuels and at a bypass manifold (26,27). Control valves separate the circuit (1) and the pipeline (20) into sections of high and low pressure. Throttles (15,16; 49,50; 59,60; 28,29) are made with permanent area of throughput section.

EFFECT: invention provides for identical filling of fuel injection devices for each type of fuel, optimal pressure of make-up and fuel flow via a supply line, and preservation of the specified flow of cooling fuel via a line of nozzles cooling.

1 dwg, 1 tbl