CN202611840U - Silencer for gasoline engine - Google Patents
Silencer for gasoline engine Download PDFInfo
- Publication number
- CN202611840U CN202611840U CN2012202825645U CN201220282564U CN202611840U CN 202611840 U CN202611840 U CN 202611840U CN 2012202825645 U CN2012202825645 U CN 2012202825645U CN 201220282564 U CN201220282564 U CN 201220282564U CN 202611840 U CN202611840 U CN 202611840U
- Authority
- CN
- China
- Prior art keywords
- shell
- silencer
- gasoline engine
- catalyst
- fore shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a silencer for a gasoline engine. The silencer for the gasoline engine comprises a front shell and a back shell. A catalyst positioning plate is arranged between the front shell and the back shell to form a front cavity and a back cavity. A catalyst shell is fixed on one side of the catalyst positioning plate with the back cavity. Catalysts are arranged in the catalyst shell. An exhaust pipe is arranged on the front shell. The silencer for the gasoline engine is characterized in that a front heat insulation shell is arranged inside the front shell, a back heat insulation shell is arranged inside the back shell, and gaps are reserved between the front heat insulation shell and the front shell and between the back heat insulation shell and the back shell. Compared with the prior art, the silencer for the gasoline engine has the advantages that a layer of the front shell and a layer of the back shell are additionally added to the inner side of the silencer, gaps between an inner shell body and an outer shell body range from 2 millimeters to 3 millimeters, high temperature produced due to secondary combustion of the catalysts can be effectively obstructed, and normal use of the gasoline engine can be guaranteed.
Description
[technical field]
The utility model relates to the technology of gasoline engine field, relates in particular to the baffler that a kind of petrol engine is used.
[background technique]
Traditional muffler shell is a single layer structure, when using catalyst to reduce to discharge pollutants, because the secondary combustion of catalyst; Very high-temperature can be produced, like this, the high-temperature zone will be on front and rear casing, formed; High temperature on the back cover can influence the thermal equilibrium of petrol engine conversely; Make engine overheat, influence its power performance, when serious motor can not normally be moved; Hyperthermia radiation on the fore shell can make the fusing of baffler outer protective cover and the forfeiture protection effect.
[model utility content]
The utility model is in order to solve above-mentioned deficiency, the baffler that provides a kind of petrol engine to use.
The above-mentioned purpose of the utility model realizes through following technological scheme: the baffler that a kind of petrol engine is used; Comprise fore shell, back cover, be provided with between fore shell and the back cover and touch the coal positioning plate, form ante-chamber and back cavity; Back cavity one side on the catalyst positioning plate fixing one is touched the coal shell; Touch to be equipped with in the coal shell and touch coal, fore shell is provided with outlet pipe, it is characterized in that: said fore shell inboard is provided with preceding heat-insulating housing; The back cover inboard is provided with the back heat-insulating housing, leaves the gap between said preceding heat-insulating housing and fore shell, back heat-insulating housing and the back cover.
The thickness in said gap is 2-3mm.
The utility model advantage compared with prior art is: the baffler of the utility model is to have increased one deck front and back housing again in inside; The space that 2-3mm is arranged between inner housing and the frame; Can effectively intercept the high temperature that the catalyst secondary combustion produces, guarantee the normal use of motor.
[description of drawings]
Fig. 1 is the plan view of the utility model.
Fig. 2 is the sectional view at A-A place among Fig. 1.
Fig. 3 is the sectional view at B-B place among Fig. 1.
In the accompanying drawing, the 1-fore shell; The 2-back cover; 3-catalyst positioning plate; The 4-ante-chamber; The 5-back cavity; 6-touches the coal shell; The 7-outlet pipe; Heat-insulating housing before the 8-; Heat-insulating housing behind the 9-; The 10-gap; The 11-exhaust gas entrance.
[embodiment]
Below in conjunction with accompanying drawing the utility model is further detailed:
To shown in Figure 3, the baffler that a kind of petrol engine is used comprises fore shell 1, back cover 2 like Fig. 1; Be provided with between fore shell 1 and the back cover 2 and touch coal positioning plate 3, form ante-chamber 4 and back cavity 5, back cavity one side on the catalyst positioning plate 3 fixing is touched coal shell 6; Touch to be equipped with in the coal shell 6 and touch coal, fore shell 1 is provided with outlet pipe 7, it is characterized in that: said fore shell 1 inboard is provided with preceding heat-insulating housing 8; Back cover 2 inboards are provided with back heat-insulating housing 9, leave gap 10 between said preceding heat-insulating housing 8 and fore shell 1, back heat-insulating housing 9 and the back cover 2.
Like Fig. 2 or shown in Figure 3, the thickness in said gap 10 is 2-3mm.
As shown in Figure 3, the working principle of the utility model: the waste gas in the cylinder is through the ante-chamber 4 of the exhaust gas entrance 11 entering bafflers of baffler, and volume obtains expanding for the first time, and noise energy obtains decay for the first time; And then the secondary combustion of process catalyst, the harmful substance contents of discharge significantly reduces, and acoustic energy also obtains decay; Waste gas gets into the back cavity 5 of baffler more subsequently, and volume obtains expanding for the second time, and noise energy obtains decay once more, and like this, the waste gas that finally enters atmosphere is cleaned, and can satisfy national second stage emission regulation demands, and exhaust sound also reaches the GB requirement.The two-layer heat insulation influence of reprocessing heat to motor itself that reduced guaranteed the performance of motor.
What should explain at last is: the foregoing description only be for explain clearly that the utility model does for example; And be not the qualification to mode of execution; Those of ordinary skill for affiliated field; On the basis of above-mentioned explanation, can also make other multi-form variation or change, need not here also can't give to all mode of executions exhaustive, and the conspicuous variation of being amplified out thus or the change still be among the protection domain of the utility model.
Claims (2)
1. the baffler that petrol engine is used comprises fore shell, back cover, is provided with between fore shell and the back cover to touch the coal positioning plate; Form ante-chamber and back cavity, back cavity one side on the catalyst positioning plate fixing is touched the coal shell, touches to be equipped with in the coal shell and touches coal; Fore shell is provided with outlet pipe; It is characterized in that: said fore shell inboard is provided with preceding heat-insulating housing, and the back cover inboard is provided with the back heat-insulating housing, leaves the gap between said preceding heat-insulating housing and fore shell, back heat-insulating housing and the back cover.
2. the baffler that a kind of petrol engine according to claim 1 is used is characterized in that: the thickness in said gap is 2-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202825645U CN202611840U (en) | 2012-06-14 | 2012-06-14 | Silencer for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202825645U CN202611840U (en) | 2012-06-14 | 2012-06-14 | Silencer for gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611840U true CN202611840U (en) | 2012-12-19 |
Family
ID=47345549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202825645U Expired - Fee Related CN202611840U (en) | 2012-06-14 | 2012-06-14 | Silencer for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603712A (en) * | 2013-11-06 | 2014-02-26 | 涛涛集团有限公司 | Silencer used for small-size gasoline engine |
| CN103909499A (en) * | 2014-03-18 | 2014-07-09 | 永康市嘉宏工具制造有限公司 | Crushing pickaxe with gasoline engine |
| CN107288707A (en) * | 2017-08-04 | 2017-10-24 | 浙江崴光工贸有限公司 | A kind of muffler for miniature gasoline engine |
-
2012
- 2012-06-14 CN CN2012202825645U patent/CN202611840U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603712A (en) * | 2013-11-06 | 2014-02-26 | 涛涛集团有限公司 | Silencer used for small-size gasoline engine |
| CN103603712B (en) * | 2013-11-06 | 2016-06-15 | 涛涛集团有限公司 | Acoustic filter for miniature gasoline engine |
| CN103909499A (en) * | 2014-03-18 | 2014-07-09 | 永康市嘉宏工具制造有限公司 | Crushing pickaxe with gasoline engine |
| CN103909499B (en) * | 2014-03-18 | 2016-06-29 | 永康市嘉宏工具制造有限公司 | Gasoline engine breakup pick |
| CN107288707A (en) * | 2017-08-04 | 2017-10-24 | 浙江崴光工贸有限公司 | A kind of muffler for miniature gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150614 |
|
| EXPY | Termination of patent right or utility model |