RU52611U1 - SILENCER OF THE EXHAUST GAS SYSTEM - Google Patents

Abstract

The goal is to reduce noise in the engine exhaust system. This is achieved by the fact that the muffler, divided into three chambers, contains inlet 9 and outlet 11 perforated nozzles, the inlet perforated nozzle isolated from the volume of the intermediate chamber along the length of this chamber by an inner pipe of a larger diameter, one of the chambers is made of a dead end, the volume of the inlet chamber is 0, 4-0.6 of the volume of the intermediate chamber, and the volume of the dead end chamber is 0.2-0.4 of the volume of the intermediate chamber, and the intermediate chamber is made with a packing of sound-absorbing material.

Description

The inventive utility model relates to the field of engine manufacturing and can be used in exhaust systems of internal combustion engines of vehicles.

Known muffler exhaust system containing a housing with front and rear walls, two transverse partitions dividing the housing into three chambers: inlet, intermediate and dead end, inlet and outlet perforated pipes, [1].

The disadvantage of this design is the increased noise level during engine operation.

The technical result achieved by this structural embodiment is to reduce the noise level to meet international standards.

This result is achieved in that the perforated inlet pipe is isolated from the volume of the intermediate chamber along the length of this chamber by an inner pipe of a larger diameter, one of the chambers is made of a dead end, the volume of the inlet chamber is 0.4-0.6 of the volume of the intermediate chamber, and the volume of the dead end chamber is 0.2-0.4 of the volume of the intermediate chamber, and the intermediate chamber is made with a packing of sound-absorbing material.

The inventive structural embodiment is illustrated in the drawing, where:

Figure 1 is a longitudinal section of a muffler;

Figure 2 is a side view of the muffler.

The exhaust gas silencer comprises an oval-shaped housing 1, in which three chambers are made: inlet 2, intermediate 3 and dead-end 4, formed respectively by two end walls 5, 6 and two baffles 7, 8, inlet pipe 9, intermediate chamber pipe 10, exhaust pipe 11, and the pipes are made with perforation 12, and the intermediate chamber 3 is made with a packing of sound-absorbing material 13.

When the engine is running, the exhaust gases enter the inlet pipe 9, enter the dead end chamber 4 and through the perforation into the inlet chamber 2, the inlet perforated pipe is isolated from the volume of the intermediate chamber by a pipe inside which it is enclosed throughout the intermediate

chamber, then the exhaust gases through the exhaust pipe 11 go to the outlet of the muffler, at the same time through the perforation of the exhaust pipe 11 filling the intermediate chamber 3, made with a packing of sound-absorbing material.

As a result of the passage of exhaust gases through the perforated pipes and packing, the noise level at the outlet of the muffler is reduced. In the embodiment, the intake chamber with a volume of 0.4-0.6 from the volume of the intermediate chamber, and the deadlock chamber with a volume of 0.2-0.4 from the volume of the intermediate chamber, the fluctuations in the exhaust gas flow in the exhaust system do not reach resonant values, thereby reducing the level car noise.

The tests carried out at GAZ confirmed the high efficiency of the proposed design.

Sources of information taken into account when preparing the application:

1. Utility model of the Russian Federation No. 26595, class. F 01 N 1/00, 2002 - prototype.

Claims (3)

1. The muffler of the exhaust system, comprising a housing with front and rear walls, two transverse partitions dividing the housing into three chambers: inlet, intermediate and exhaust, inlet and outlet perforated nozzles, characterized in that the inlet perforated nozzle is isolated from the volume of the intermediate chamber along the length of this chamber with an inner pipe of a larger diameter, one of the chambers is made dead end, and the intermediate chamber is made with a packing of sound-absorbing material. 2. The muffler according to claim 1, characterized in that the volume of the inlet chamber is 0.4-0.6 of the volume of the intermediate chamber. 3. The muffler according to claim 1, characterized in that the volume of the blind chamber is 0.2-0.4 of the volume of the intermediate chamber.