SU1204756A1 - Exhaust silencer of internal combustion engine - Google Patents

Description

The invention relates to mechanical engineering, in particular engine construction, namely, exhaust emission silencing engines for an internal combustion engine.

Figure 1 shows the muffler, the cut; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The exhaust noise silencer contains a cylindrical body 1 with inlet 2 and outlet 3 nozzles, chambers 4 formed by dividing partitions 5 with openings 6 with at least two swirlers 7 one of which is located near the inlet nozzle of swirl 7 made in the form of guide vanes 8 (FIG. 2, bounded on the side of the inlet pipe by a conical partition 9 with at least two openings 10 (in FIG. 3) made in the form of segments, and on the opposite side - a partition 11 with a central opening, than holes baffles are in the form of segments with edges 12 bent to the side of the inlet pipe, and the chamber formed by different fission partitions 6 are formed with the increase in their volumes in the side of the inlet pipe.

The muffler works as follows.

The gas through the inlet pipe 2 enters the swirler chamber 7 spreads over the conical surface of the partition 9 and through the segment holes 10 spaced by 180, enters the vanes 8, twists and enters the following chamber through the central opening of the partition 11; passage through the swirler 7 and repeatedly reflected from the conical surface of the partition 9 in the swirler chamber.

Next, the gas flows around the partition 5 through the segment opening 6, located near the cylinder wall, alternately flows around the subsequent partition 5e with spaced holes 180 relative to each other, and the sound waves due to the partition bent at 15 -18 edges reflect the movement of the gas flow, which creates self-muffling effect. The process is then repeated until gas escapes from the silencer through the outlet 3.

An additional effect in the silencer arises due to the complete combustion of fuel particles, which is ensured by the presence of a labyrinth system and a gradual increase in the volume of chambers 4 away from the inlet 2.

2

Phi-1.3

Compiled by V.Slavnikov Editor M.Tovtin Tehred O.Vashchishina Proofreader L.Patay

Order 8502/32 Circulation 496 Subscription

VNIIPI USSR State Committee

Dalam inventions and discoveries 113035, Moscow ,. Zh-35, Raushsk nab. 4/5

Branch ShSh Patent, Uzhgorod, st. Design, 4.

Claims (4)

1. SILENCER OF EXHAUST NOISE OF THE INTERNAL COMBUSTION ENGINE, comprising a cylindrical body with inlet and outlet nozzles, chambers formed by dividing walls with openings, and at least two swirlers, one of which is located near the inlet nozzle, which is protected by the fact that , in order to increase efficiency, the swirlers are made in the vice of guide vanes bounded on the inlet pipe side by a conical baffle with at least two holes made in the form of segments, and with the positive side of the partition with a Central hole, and the holes of the separation walls are made in the form of segments with the edges bent towards the inlet pipe, and the chambers formed by the separation walls are made with increasing volumes to the side of the inlet pipe. 2. The muffler according to claim 1, characterized in that the conical baffle of the swirler is made with openings spaced 180 ° apart. g 3. The muffler according to claims 1 to 3, resulting in that the edges are ott? versts of dividing partitions are bent at an angle of 15-18. 4. The silencer according to claims 1 to 3, characterized in that the chamber volumes are equipped with a common dividing wall and are connected by a ratio of 1: 1, 05.