SU1312230A1 - Internal combustion engine fuel injector - Google Patents

Abstract

The invention relates to engine-building and can be used in the power supply systems of an internal combustion engine, and it allows the engine to increase its efficiency and reduce its toxicity. due to uniform mixing of the additive with the fuel. The nozzle has a housing 1. And a spray gun 2 fixed on it with a stop needle and nozzle openings. The under-cavity 12 of the nebulizer has channels 6, 7 for the supply of fuel and additives. The porous metal-ceramic insert 14 connects channel 7 and the mixing-accumulating chamber with cavity 12. The fuel that falls into the latter partially enters the pores of the insert 14. After lifting the needle 16, the check valve 8 opens and passes the pressure from channel 7 additives. The latter squeezes the fuel out of the pores, mixing with it. Both the fuel and the additive can be found in the pores of the insert. As a result, mixing takes place both in channel 6 and in cavity 12. 3 Il. i (o

Description

The invention relates to engine management and can be used in the power systems of an internal combustion engine. The purpose of the invention is. increase of economy no. 1 and reduction of toxicity of exhaust gases due to uniform mixing of the additive with fuel.

FIG. 1 shows a structural diagram of the nozzle; in fig. 2 - nozzle with a nozzle of a spray from a metal-ceramic material; in fig. 3 - the same, with a screw-accumulating chamber.

The nozzle includes a housing 1, a spreader 2 and a cap nut 3 for fastening the spray gun 2 to the housing 1. In the housing 1 there is a fitting 4 for supplying hydrocarbon fuel, a fitting 5 for supplying fuel additives, a channel 6 for supplying fuel and a channel 7 for supplying additives. In channel 7 for supplying additives, a check valve 8 is installed, spring-loaded and a girder 9 held by nut 10. In dispenser 2, insert 11 is pressed in with extensions of channels 6 and /. Sub-cavity 12 and mixing-accumulating chamber 13 are formed by the walls of the porous metal-ceramic insert 14 of the housing of the dispenser 2 and the insert 11.

The fastening of the metal-ceramic insert 14 is carried out either by pressing in the insert 11 (Fig. 1 and 2) or the insert 11 is completely metal-ceramic and pressed into the casing of the extender 2 (Fig. 3). Chamber 13 for even distribution of the additive in the fuel comes in contact with porous ceramic-metal insert 14 (fig. 1 - 3). The pore insert 14 (fig. 1 and 2), or insert 11 (fig. 3) is inserted from a material made of powder by powder metallurgy with pores up to 30 μm. When attaching the porous metal-ceramic insert 14 (FIGS. 1 and 2) with the insert 11, the chamber 13 is pressed into the spray housing, a chamber 13 is formed between the housing of the spreader 2, the insert 11 and the metal-ceramic insert 14 due to the groove of the insert 11. (Fig. 3), the chamber 13 is formed by the walls of the

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ki case porschitel 2 and body 1 nozzle.

The nozzle 15 of the nebulizer 2 can be made either in one piece with the nebulizer body (Fig. 1 and 3), or of a porous cermet material (Fig. 2). And in the first case, for fitting the needle 16, the cone is embodied in the housing of the splitter (Fig. 1 and 3) in the second case, for the fit of the needle, it is made in a steel insert 17 (Fig. 2). .

When the nozzle 15 of the atomizer 2 is made, along with its L-fuel injection cone, holes are made using any of the known methods: drilling, burning with a spark, laser-piercing (Figs. 1 and 3). When making the nose 15 of the cermet, the specified pore sizes in the material are obtained by controlling the process of powder metallurgy. These dimensions depend on the dimension of the internal engine: combustion, provided that the total areas of flow areas are kept within the recommended limits. When a porous megalock of the frame insert is installed (Fig. 3), to improve the distribution of the additive along the walls of the porous insert, an annular screw channel 18 is made along its outer surface.

. The device works as follows.

Liquid hydrocarbon fuel entering through the fitting 4 into the body 1

ig enters through channel 6 into the articular cavity 12 of the resolver 2, while part of it enters the pores of the metal-ceramic insert 14 (Fig. 1 and 2) or insertion 11 (Fig. 3) and can

jj partially nepefeKaVfe into chamber 13. After lifting the needle 16, the pressure in the cavity 12 is relieved, and accordingly in the chamber 13. In this case, the valve 8 opens and passes a portion of the gaseous or liquid additive under pressure from channel 7. It squeezes the fuel from the pores of the insert 14 or insert 11 and mixes with it. The contact surface is developed due to the fact that the entire cavity 12 is formed by the surface of a porous metal-ceramic insert. The pores of insert 14 or insert 11 can be either fuel or liquid

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ka Additive due pores enters the cavity 12 in the form of small gas bubbles or particles. At the next lifting of the needle 16, a mixture of fuel and additives is fed into the cylinder. The additive entering the chamber 13 is inserted into the pores of the insert, mixing occurs both in the fuel channel 6 and in the cavity 12 into which the additive flows from the pores with the fuel.

Thus, the proposed nozzle provides better mixing of the additives with the fuel, which contributes to improved fuel efficiency and reduced exhaust smoke,

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Claims (1)

Invention Nozzle for internal combustion engines, comprising a housing, a spray gun mounted on it with a locking needle and nozzle openings, a piston opening space with a fuel supply channel and an additive supply channel to the sprayer with a mixing-accumulating chamber equipped with a check valve, characterized in that, in order to increase engine efficiency, reduce toxicity and soot level. In addition, the nozzle additionally contains a porous metal-ceramic insert, a joint of the additive supply channel and a mixing-accumulating chamber with the podigolny cavity. fO 15 P FIG. 2 Fut. five