RU43916U1 - INLET MANIFOLD OF THE INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

The utility model relates to mechanical engineering and can be used in intake systems of internal combustion engines.

At the end of the intake manifold of the internal combustion engine, an annular groove is formed around each of its outlet openings, forming an inner and outer wall. At least one hole is made in the outer wall, and at least two tangential holes are made in the inner wall, which are preferably located symmetrically with respect to the longitudinal axis of the exit hole.

Using the proposed technical solution allows to increase engine power, reduce fuel consumption by providing more complete combustion of fuel and significantly reduce exhaust toxicity.

Description

The utility model relates to mechanical engineering and can be used in intake systems of internal combustion engines.

It is known that to increase the environmental and economic (in terms of fuel consumption) efficiency of internal combustion engines, it is necessary to ensure the most complete crushing of fuel into droplets with a diameter of not more than 40 microns. There are a lot of ways to solve this problem. The most common is turbulization of air at the inlet to the manifold or turbulization of the air-fuel mixture at the outlet of it. The disadvantage of all known turbulators is that they take part of the flow energy, since they increase its resistance to movement, while a significant part of the fuel droplets deposits on the walls of the intake manifold, forming a film that “slides” into the cylinders and impairs the combustion process.

On internal combustion engines, intake manifolds are used, made in the form of pipelines of various lengths and the required structural profile. The closest analogue of the claimed invention is the intake manifold of an internal combustion engine containing pipelines with outlet openings (see SU 1326745, IPC 7 F 02 B 29/00, publication 1987). A disadvantage of the known collector is that it provides a sufficiently high fuel consumption and low power characteristics of the engine due to the insufficiently efficient atomization of fuel and its mixing with air.

The technical task of the proposed utility model is to increase the power, economic and environmental characteristics of the engine due to the design of the intake manifold, which provides effective mixing of air with fuel.

The problem is solved in that in the end face of the intake manifold of the internal combustion engine, an annular groove is made around each of its outlet openings, forming an inner and outer wall, with at least one hole in the outer wall and at least two holes in the inner wall.

For more intensive turbulization of the flow of the air-fuel mixture, the holes in the inner wall are made tangential, located symmetrically with respect to the longitudinal axis of the outlet at equal distances.

The following graphic materials explain the essence of the proposed utility model.

Figure 1 schematically shows the connection of the intake manifold with the cylinder head of the engine.

Figure 2 shows a section aa in figure 1.

The intake manifold (see figure 1) consists of nozzles 1 with outlet openings 2, the number of which is equal to the number of engine cylinders. The nozzles 1 by means of flanges are attached to the cylinder head 3 of the internal combustion engine. At the end of each pipe 1 (see FIG. 2), an annular groove 4 is made around the outlet, forming an inner 5 and an outer 6 wall. At least one radial hole 7 is made in the outer wall, which serves to pass air into the groove 4, and in the inner wall, at least two tangential holes 8, which serve to pass and swirl air into the outlet 2 of the manifold. At the outlet of the collector in front of the holes 8, a fuel nozzle 9 is placed.

The operation of the device is as follows.

When the engine is running, the air-fuel mixture prepared with the help of a nozzle (carburetor) enters through the manifold nozzles 1 into the engine cylinders in which it is burned. Passing through the outlet openings 2, the air-fuel mixture flow sucks in air through the tangential openings 8, which swirls, providing swirling of the mixture flow, as a result of which miniature tornadoes form in the device with a vacuum in the center, which contribute to the breakdown of fuel droplets deposited on the walls, grinding of fuel particles and the evaporation of fine particles of fuel, while forming a homogeneous mixture.

Using the proposed technical solution allows to increase engine power and reduce fuel consumption by providing more complete combustion of fuel and significantly reduce exhaust toxicity.

Claims (3)

1. The intake manifold of an internal combustion engine having at least one outlet, characterized in that at its end around each outlet is made an annular groove forming the inner and outer walls, while at least one hole is made in the outer wall, and at least two holes in the inside. 2. The collector according to claim 1, characterized in that the holes in the inner wall are made tangential. 3. The collector according to claim 2, characterized in that the holes are located axisymmetrically through equal distances.