Close-range collision type double-fuel engine nozzle component

Abstract

The invention relates to a close-range collision type double-fuel engine nozzle component and belongs to the technical field of engine nozzles. The close-range collision type double-fuel engine nozzle component comprises a needle valve, a sleeve valve, a nozzle body, a collision sleeve, a needle valve electromagnet, a first fuel channel electromagnet, a first ball valve, a second fuel channel electromagnet, a second ball valve and a spring, wherein the needle valve is located in the sleeve valve, and the sleeve valve is provided with a fuel outlet; the nozzle body is provided with a first mounting groove, a first fuel channel and a second fuel channel, the conical face of the first mounting groove is in tight contact with the conical face on the outer surface of the sleeve valve, the first ball valve is arranged at the inlet of the first fuel channel, and the second ball valve is arranged at the inlet of the second fuel channel; the nozzle body is provided with a conical face, the conical face of the nozzle body is provided with a spray hole, and the spray hole is communicated with the first mounting groove; the collision sleeve is provided with a second mounting groove, the nozzle body is mounted in the second mounting groove, and the collision sleeve is provided with a collision platform. The close-range collision type double-fuel engine nozzle component can improve a collision spray effect, avoid the generation of a wall-face oil film and accumulated carbon, and lower soot discharge quantity.

Description

technical field [0001] The invention relates to the technical field of engine nozzles, in particular to a short-distance collision dual-fuel engine nozzle assembly. Background technique [0002] The research results of the diesel spray process show that the droplet size of the diesel oil sprayed from the nozzle hole of the injector is relatively large, and the direction of the droplet velocity is roughly the same. This results in poor mixing of the oil and gas, with over-rich zones, resulting in higher soot emissions. The collision spray method can break the large-sized droplets into small-sized droplets, and can change the direction of movement of the droplets, thereby improving the oil-gas mixing effect, expanding the distribution range of the oil-gas mixture in the combustion chamber space, and reducing soot emission. However, after the fuel oil collides with the solid wall, a wall oil film will be formed on the surface of the solid wall, resulting in an excessively hig...

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Problems solved by technology

[0003] In order to solve the problem in the prior art that oil film and carbon deposits are produced on the surface of the solid wall after the fuel oil collides with the solid wall, which makes the local fuel concentration too high and is not conducive to improving the emission of soot, the present invention provides a close-range collision type Dual-fuel engine nozzle assembly, the short-distance collision dual-fuel engine nozzle assembly includes: needle valve, sleeve valve, nozzle body, collision sleeve, needle valve electromagnet, first fuel passage electromagnet, first ball valve, second fuel channel solenoid, second ball valve and spring;

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