SU1625335A3 - Device for homogenization of fuel-air mixture for internal combustion engine - Google Patents

Abstract

The invention relates to fuel apparatus for carburetor internal combustion engines and is intended to increase the homogenization of the FUEL-AIR mix by ensuring the interaction of the central part of the stream with its peripheral part. The device contains an insert 6 installed in the opening of the cup 2, consisting of cones 7.8 and 9 placed one into another. Cones 7 and 8 are made truncated and installed upstream and upstream. The edges of the 12 cones 7 and 8 are interconnected. The cone 9 has. I rub a vertex downstream. The cone 9 is located inside the cone 8 and their edges 13 are connected. The side surfaces of the cones are perforated, for example made of mesh. The device is located between the carburettor 3 and the inlet pipe 4. The fuel-air mixture, the passage through the insert 6, is divided into central and peripheral parts, which are mixed at the outlet of the insert, 2 sludge. V) So you ate CO GO SL cm cm Fi.1

Description

The invention relates to fuel / apparatus for carburetor engines, internal combustion, and is intended to homogenize the air / fuel mixture in the intake path.

The purpose of the invention is to increase the homogenization of the air-fuel mixture.

Figure 1 shows the device section; figure 2 - insert.

The device contains a plate 1, in the opening of which a cylindrical cup 20 is installed. The plate 1 is fixed between the carburetor flange 3 and the flange of the intake manifold 4, while on the carburettor side the plate contacts the flange of the latter through a heat insulating gasket 5. An insert 6 which consists of a hollow outer truncated cone 7, an inner truncated cone 8 and an additional cone 9, the side surfaces of which are perforated, for example made of a mesh.

The cone 8 is placed inside the cone 7, and the cone 9 is located inside the cone 8 “The cone 7 with a large base 10, having a grating 11, is installed opposite the flow of the mixture leaving the carburetor mixing chamber. The edges 12 of the smaller base of the cone 7 and the larger base of the cone 8, as well as the edges 13 of the smaller base of the cone 8 and - i of the base of the cone 9 are connected to each other. At the same time, the cone 8 with the smaller base is set in the opposite direction to the mixture flow, and the cone 9 is directed at the top

about the flow of the mixture.

The tapering angle of the cones 7 and 9 is chosen 40 from the condition of the least resistance to the flow of the mixture. In this case, the projections of the side surfaces of the cones onto the transverse plane do not contain the corresponding projections of the perforated holes or, for example, in the case of making cones from the grid, the projections of the filaments, the intersections of which form the grid cells, onto the transverse plane i, Jq that the projections of the cells are not visible. The grid of which the cones 7–9 are made should be structured so that the total area of the holes on the side surfaces of the cones is $ more than the area of the opening of the cup 2, which can be made in the form of a diffuser. The cone 9 is located relative to the external cone 7 so that

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its tip protrudes behind the edge of the smaller base of the outer cone, that is, at least part of the surface of the cone 9 is located outside the volume occupied by the other two cones.

The device works as follows.

The fuel-air mixture, the outlet from the carburetor, passes through a homogenizing device and enters the engine cylinders through the intake manifold. In this case, the passage through the insert 6, the flow interacts with the perforated inclined walls of the cones 7-9 and breaks up into separate jets, which deviate from the axis of the device. The peripheral part of the flow, passing through the cells of the outer cone 7, falls on the walls of the glass 2, heated due to good contact with the walls of the inlet pipe 4. Evaporates the fuel droplets and mixes the vapor with air.

Claims (1)

The central part of the mixture flow, falling into the tapering cone 9, is accelerated and exits from it by radial jets that interact with the peripheral part of the flow. This improves the mixing of the flow and leads to the alignment of the mixture composition over the cross section of the pipeline. Invention Formula A device for homogenizing the fuel-air mixture for an internal combustion engine, containing an insert installed between the carburetor and the intake manifold and made in the form of two hollow truncated cones with perforated side surfaces placed coaxially, the smaller base of the external truncated cone is matched on the edge with a large base of internal truncated cone, while the external truncated cone is oriented with its smaller base along the flow, and the internal truncated cone is opposed to the flow, o separably in that in order to increase the homogenization of the fuel-air mixture, the apparatus further provided with a hollow cone with a perforated lateral surface, the base of which the conjugated zhono with internal smaller base of the truncated cone along the edge and circulation but upstream. eleven Fm.g