SU665111A1

SU665111A1 - Internal combustion engine exhaust silencer

Info

Publication number: SU665111A1
Application number: SU762410380A
Authority: SU
Inventors: Василий Федорович Передрий; Эдуард Михайлович Жарнов; Маргарита Сергеевна Егорычева
Original assignee: В. Ф. Передрий, Э. М. Жарнов и М. С. Егорычева
Priority date: 1976-10-11
Filing date: 1976-10-11
Publication date: 1979-05-30

Description

1one

Изобретение относитс к области машиностроени , преимущественно к глушител м шума выпуска двигателей внутреннего сгорани .The invention relates to the field of mechanical engineering, mainly to the silencers of the exhaust noise of internal combustion engines.

Известны глушители шума выпуска дл двигател внутреннего сгорани , содержаш ,ие корпус с входным и выходным патрубками , центральную перфорированную трубу , установленную в корпусе при помош,и поперечных перфорированных перегородок, образующих с его стенками камеры, и последовательно размещенные в трубе дроссель с отверстием и заглушку 1.Exhaust noise silencers for an internal combustion engine, containing an inlet and outlet nozzles, a central perforated pipe installed in the housing with help and transverse perforated partitions forming chamber walls with its walls, and successively placed in the pipe a choke with a hole and a plug are known one.

В известном глушителе геометрические размеры проходных сечений отверстий дл прохождени газа неоптимальны, что снижает эффективность шумоглушени .In a known silencer, the geometrical dimensions of the passage sections of the gas passage holes are not optimal, which reduces the effectiveness of sound attenuation.

Целью изобретени вл етс повышение эффективности шумоглушени .The aim of the invention is to increase the efficiency of sound attenuation.

Указанна цель достигаетс тем, что отношение площадей всех отверстий дл выпуска газа из каждой камеры к площад м всех отверстий дл впуска газа в эту же камеру выполнено в соответствии с соотношени ми: .This goal is achieved by the fact that the ratio of the areas of all the gas outlets from each chamber to the areas of all the gas inlets into the same chamber is made in accordance with the ratios:.

L± 0,9-г- 1,03; - 0,9- 1,03L ± 0.9-g - 1.03; - 0.9 - 1.03

5вх- 15 in- 1

- 0,,03; -:| 0,,03,- 0,, 03; -: | 0,, 03,

Oj -|- Oj - | -

где 5вх - площадь отверсти входного патрубка;where 5in - the hole area of the inlet;

5i - площадь отверстий перфорации трубы на участке от входного патрубка до дроссел ; 5др - площадь отверсти дроссел ;5i - the area of the perforation holes of the pipe in the area from the inlet to the throttles; 5dr - the area of the throttles;

§2 - площадь отверстий в первой со стороны входного патрубка перегородке;§2 - the area of the holes in the first partition of the inlet pipe;

5з - площадь отверстий перфорации труби на участке от дроссел до заглушки;5h - the area of perforation holes of the pipe in the area from the throttles to the stub;

$4 - площадь отверстий во второй со стороны входного патрубка перегородке;$ 4 - the area of the holes in the second partition of the inlet pipe;

Ss - площадь отверстий перфорации трубы на участке от заглушки до выходного патрубка.Ss is the area of perforation holes in the pipe from the plug to the outlet.

Кроме того, дроссель и заглушка могут быть расположены, в плоскости перегородок , а отношение площади отверсти дроссел 5др к площад м отверстий перфорации трубы Si и 5з выполнено в соответствии с соотношением:In addition, the throttle and the plug can be located in the plane of the partitions, and the ratio of the opening area of the throttles to 5dr to the areas of the perforation holes of the Si pipe and 5h is made in accordance with the ratio:

% г:. 0,,4; -|2- ,1.% g: 0,, 4; - | 2-, 1.

SiОдрSiOdr

Claims

The drawing shows a diagram of the muffler. The silencer includes a housing 1 with inlet and outlet nozzles 2 and 3, a central perforated pipe 4 installed in the housing 1 by means of transverse perforated partitions 5 and 6, forming with its walls a chamber 7-9. In the central pipe 4, a choke 10 with an opening I and a plug 12 are successively placed. Exhaust gases through the inlet pipe 2 enter the central pipe 4, after which one part of the gases through the perforations in the pipe 4 penetrates into the chamber 7, and the other through the choke 10 and perforations in pipe 4 — into chamber 8. From chamber 7 through perforations in partition 5, gases enter chamber 8 and then through perforations in partition 6 into chamber 9. Gas from chamber 9 through perforations in central tube 4 and outlet 3 is emitted into the atmosphere . The ratio of the areas of the holes allows to obtain the maximum interference effect and reduce the noise of exhaust gases of the internal combustion engine in a wide frequency range without deteriorating its economic performance. Claim 1. An exhaust silencer for an internal combustion engine, comprising a housing with inlet and outlet nozzles, a central perforated pipe installed in the housing with transverse perforated partitions forming the chamber walls with its walls, and successively placed in the pipe a choke with a hole and a plug, characterized in that, in order to increase the efficiency of sound attenuation, the ratio of the areas of all the gas outlets from each chamber to the areas of all the holes for the gas in the same Yeru otvetstvii made in relation with: e SBX - opening area of the inlet pipe; 51 is the area of perforation holes of the pipe in the area from the inlet pipe to the throttles; 5dr - the area of the throttles; 52 - the area of the holes in the first partition of the inlet pipe; 53 - the area of perforation holes of the pipe in the area from the throttles to the plug; S - the area of the holes in the second partition of the inlet pipe; Ss is the area of perforation holes in the pipe from the plug to the outlet.

2. The muffler according to Claim. 1, characterized in that the choke and plug are located in the plane of the partitions.

3. Silencer on PP. 1, 2, the difference is that the ratio of the area of discharge of throttle 5dr to the area of the holes of the perforation of the Si pipe and 5h is made in accordance with the ratio: -0.4; ,one. 0,25Si Sources of information taken into account during the examination 1. US patent No. 3154174, cl. 181-46, highlight. 1964.