CN103422943A - Horizontal silencer of diesel engine - Google Patents
Horizontal silencer of diesel engine Download PDFInfo
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- CN103422943A CN103422943A CN201310355591XA CN201310355591A CN103422943A CN 103422943 A CN103422943 A CN 103422943A CN 201310355591X A CN201310355591X A CN 201310355591XA CN 201310355591 A CN201310355591 A CN 201310355591A CN 103422943 A CN103422943 A CN 103422943A
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- silencing
- diesel engine
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- horizontal
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Abstract
The invention relates to a horizontal silencer of a diesel engine. The horizontal silencer comprises a cylindrical silencing chamber shell with two closed ends, an air inlet and an exhaust port. The horizontal silencer additionally comprises two disc baffles which are arranged in parallel at the middle part of the shell. The baffles sequentially divide the shell into a first expansion space, a resonance space and a second expansion space. The horizontal silencer additionally comprises silencing pipes which simultaneously penetrate through the two baffles. The number of the silencing pipes is at least two. A plurality of small holes are respectively arranged at the two ends of the silencing pipes in the first expansion space and the second expansion space. The air inlet is installed in the first expansion space. The exhaust port is installed in the second expansion space. The horizontal silencer of the diesel engine has the beneficial effects that since various techniques such as micro-pore silencing, dissipative silencing and reactive silencing are combined, the noise reducing effect is excellent, the generality is high, the cost is low, the manufacturing process is simple and the noise reducing demands of high-power agricultural diesel engines are met.
Description
Technical field
The present invention relates generally to the diesel engine field, and specifically a kind of Diesel Engine Exhaust Pipe mechanism afterwards that is connected to, played and reduced the noise that diesel engine flows and produces because of exhaust airstream.Mainly be applicable to the noise reduction of agriculture dress class high-power (70kw ~ 110kw) diesel engine.
Background technique
The noise elimination mechanism of silencing apparatus has following several theory: resistance noise reduction, reactive muffling, impedance complex noise elimination, micro silencer and Active Noise Control.Because diesel engine work characteristic is different from petrol engine or other power plant, main manifestations is that power is strong, moment of torsion is large, exhaust particulate is many, arrange that warm row pressure is high, rough running etc., and frequency noise belongs to the medium and low frequency band, so generally use reactive muffling.This invention has increased micro silencer and two kinds of noise reduction modes of resistance noise reduction at the agricultural equipment mechanical field, has improved to a certain extent the noise reduction of diesel engine.
Summary of the invention
The present invention seeks in order to select a kind of novel noise elimination structure for meeting the noise reduction demand of agricultural high-power diesel engine, adopt the combination of micro silencer, resistance noise reduction, reactive muffling multiple technologies, become a kind of brand-new, better effects if, also be convenient to the acoustic wave filter structure of the Selecting Complete Set of most domestic agriculture dress class machinery, there are the characteristics such as noise reduction is good, versatility good, cost is low, preparation process is simple simultaneously.
The present invention is by the following technical programs: the horizontal silencing apparatus of a kind of diesel engine, the cylindrical anechoic chamber housing that comprises closed at both ends, suction port and relief opening, also comprise two parallel disc dividing plates of being located at the housing middle part, described dividing plate is divided into the first expansive space successively by housing, sympathetic response space and the second expansive space, described silencing apparatus also comprises the hush pipe that simultaneously runs through two dividing plates, described hush pipe is at least two, the two ends that described hush pipe is positioned at the first expansive space and the second expansive space are respectively equipped with some apertures, described suction port is installed on the first expansive space, described relief opening is installed on the second expansive space.
As optimization: described hush pipe is four.
As optimization: described housing madial wall is provided with the layer of glass silencing cotton.
Beneficial effect of the present invention: the present invention adopts the combination of micro silencer, resistance noise reduction, reactive muffling multiple technologies, has the characteristics such as noise reduction is good, versatility good, cost is low, preparation process is simple, meets the noise reduction demand of agricultural high-power diesel engine.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A sectional drawing in Fig. 1.
In figure: 1, housing, 2, suction port, 3, relief opening, 4, dividing plate, the 5, first expansive space, 6, the sympathetic response space, the 7, second expansive space, 8, hush pipe, 9, aperture, 10, the glass fibre silencing cotton.
Embodiment
Embodiment 1: as Fig. 1, shown in 2, the horizontal silencing apparatus of a kind of diesel engine, the cylindrical anechoic chamber housing 1 that comprises closed at both ends, suction port 2 and relief opening 3, also comprise two parallel disc dividing plates 4 of being located at housing 1 middle part, described dividing plate 4 is divided into the first expansive space 5 successively by housing 1, sympathetic response space 6 and the second expansive space 7, described silencing apparatus also comprises the hush pipe 8 that simultaneously runs through two dividing plates 4, described hush pipe 8 is two, the two ends that described hush pipe 8 is positioned at the first expansive space 5 and the second expansive space 7 are respectively equipped with some apertures 9, described suction port 2 is installed on the first expansive space 5, described relief opening 3 is installed on the second expansive space 7, described housing 1 madial wall is provided with layer of glass silencing cotton 10.
Embodiment 2: on embodiment 1 basis, the above hush pipe 8 is four.
The simple working principle of the present invention: diesel exhaust gas enters the first expansive space 5, hush pipe 8, the second expansive space 7 successively from suction port, then drains into the larynx resistance again to atmosphere from relief opening 3.From acoustic angle, expansive space and capacity can affect the effect effect of silencing apparatus, and the larger erasure effect of space and capacity is better, so the first expansive space 5 and the general design of the second expansive space 7 are spacious; Be covered with many apertures 9 on suction port 2 and hush pipe 8, when air-flow passes through aperture 9, the frequency spectrum of exhaust noise will be shifted to high frequency and ultra-high frequency from medium and low frequency, can be heard as a minute obviously reduction; Sympathetic response space 6 is one can play the space of regulating set noise tonequality, and the larger tonequality in space is poorer, so the less of this spatial design, when air-flow flows in whole silencing apparatus, the glass fibre silencing cotton that noise can be attached to shell wall 1 absorbs.The noise heavy noise reduction of process and the absorption that finally because of air current flow, cause, reached usage requirement.
Claims (3)
1. the horizontal silencing apparatus of diesel engine, the cylindrical anechoic chamber housing that comprises closed at both ends, suction port and relief opening, it is characterized in that: also comprise two parallel disc dividing plates of being located at the housing middle part, described dividing plate is divided into the first expansive space successively by housing, sympathetic response space and the second expansive space, described silencing apparatus also comprises the hush pipe that simultaneously runs through two dividing plates, described hush pipe is at least two, the two ends that described hush pipe is positioned at the first expansive space and the second expansive space are respectively equipped with some apertures, described suction port is installed on the first expansive space, described relief opening is installed on the second expansive space.
2. the horizontal silencing apparatus of a kind of diesel engine according to claim 1, it is characterized in that: described hush pipe is four.
3. the horizontal silencing apparatus of a kind of diesel engine according to claim 1, it is characterized in that: described housing madial wall is provided with the layer of glass silencing cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355591XA CN103422943A (en) | 2013-08-15 | 2013-08-15 | Horizontal silencer of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355591XA CN103422943A (en) | 2013-08-15 | 2013-08-15 | Horizontal silencer of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103422943A true CN103422943A (en) | 2013-12-04 |
Family
ID=49648251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310355591XA Pending CN103422943A (en) | 2013-08-15 | 2013-08-15 | Horizontal silencer of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103422943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153970A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Compressor silencer enabling service life of resistive silencing part to be prolonged conveniently |
-
2013
- 2013-08-15 CN CN201310355591XA patent/CN103422943A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153970A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Compressor silencer enabling service life of resistive silencing part to be prolonged conveniently |
| CN104153970B (en) * | 2014-03-18 | 2016-04-13 | 成都陵川常友汽车部件制造有限公司 | A kind ofly be convenient to the compressor silencer extending the resistive noise elimination part life-span |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |