CN2777205Y

CN2777205Y - Silencer of internal combustion engine

Info

Publication number: CN2777205Y
Application number: CNU2005200806584U
Authority: CN
Inventors: 魏林; 魏衍昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-10
Filing date: 2005-03-10
Publication date: 2006-05-03
Anticipated expiration: 2015-03-10

Abstract

The utility model relates to a silencer of an internal combustion engine, which comprises a casing and an inner core, wherein the casing is composed of a front sealing head, a back sealing head and a casing body, and the inner core is composed of an air swelling chamber formed in the casing by a partitioning plate, an air guiding pipe and an air exhaust tail pipe. The air guiding pipe in the inner core, which is connected with the exhaust pipe of the internal combustion engine, is connected with a ternary catalyzing device. The casing corresponding to the ternary catalyzing device is provided with a ternary catalyzing device taking out and laying window. The window is provided with a sealing cover. The utility model has the advantages of scientific and reasonable structure, little noise and tail gas pollution, good purifying effect and convenient component removing and changing operation. The easily damaged components of the ternary catalyzing device can be easily replaced. The service life of the integral silencer is prolonged and the manufacturing and using cost of the silencer is reduced. The appearance, the specification and the type of the product can be the same as that of the existing products. The silencer of the internal combustion engine is convenient for renewal and generation change and market receiving. The silencer of the internal combustion engine is widely used in various internal combustion engines, motor vehicles such as automobiles, motorcycles, tractors, etc., ships, etc.

Description

The internal-combustion engine baffler

Technical field

The utility model relates to a kind of internal-combustion engine baffler, is used to alleviate engine noise and pollutes.

Background technique

The internal-combustion engine baffler is installed on the outlet pipe of internal-combustion engine, is used to alleviate the noise pollution of internal-combustion engine.Internal-combustion engine, refer to the internal-combustion engine on the Motor Vehicle such as automobile, motorcycle, tractor more, the internal-combustion engine baffler comprises shell and inner core, shell is made of front head, rear head and housing, the gas expansion chamber that inner core is formed in the enclosure by dividing plate, air pipe and tailpipe are formed, and the exhausting air of internal-combustion engine is filled the air to alleviate noise through diffusion in baffler.Existing internal-combustion engine baffler still exists bigger noise pollution and tail gas pollution, have greater environmental impacts, and the life-span of baffler is with overall calculation, no matter which parts in the baffler go wrong, need dismantle baffler owing to change parts, trouble, effort, therefore, in the practice, all the baffler integral replacing has been fallen, caused the manufacturing cost and use cost of baffler higher.

Summary of the invention

The purpose of this utility model is to provide a kind of improved internal-combustion engine baffler, and noise pollution and tail gas pollution are little, good purification, and change operation of components conveniently, and prolonged the working life of baffler integral body, reduced the manufacturing cost and use cost of baffler.

Internal-combustion engine baffler described in the utility model, comprise shell and inner core, shell is made of front head, rear head and housing, the gas expansion chamber that inner core is formed in the enclosure by dividing plate, air pipe and tailpipe are formed, be connected with ternary catalyzing unit on the air pipe of connection internal-combustion engine vent-pipe in its inner core, be provided with ternary catalyzing unit with the corresponding shell in ternary catalyzing unit position and pick and place window, be fitted with sealing cover on the window.

Set up ternary catalyzing unit, further eliminated the harmful gases such as carbon monoxide, carbon dioxide, hydronitrogen and hydrocarbon in the discharging tail gas, eliminated pollution emission substantially, exhaust emissions can reach European 1#, 2#, 3# number emission standard.Ternary catalyzing unit is more flimsy parts in baffler, on the corresponding shell in ternary catalyzing unit position, establish ternary catalyzing unit and pick and place window, can change, adjust the ternary catalyzing unit easily worn part very easily, can prolong the working life of baffler integral body greatly, significantly reduce the manufacturing cost and use cost of baffler.Ternary catalyzing unit has the commercially available prod, directly buys or customized getting final product.

The equipped structure of sealing cover and window can have a variety of, and the turnover that the assembling of pegging graft, fastening assembling, coupling shaft connect fastens various mechanical connection manners such as assembling, as can being fastened on the window at sealing cover, is provided with Stamping Steel Ribbon between sealing cover and window; Can be respectively on sealing cover and the window corresponding projection and groove or groove and the projection that is provided with fastening, soon projection wherein is located on the sealing cover or on the window, needs only correspondence, and situation all is the same, between has additional fixing bolt, strengthens fixation.For fixation, ternary catalyzing unit can be fixed on the supporting bracket, preferably reinforce with fixing belt again.

The shell of baffler can be the shell of various ways, monolithic case or sectional casing, and preferred monolithic case can be in full accord with the monolithic case on the existing market, is convenient to manufacturing firm and the user application that directly updates, and is beneficial to popularization.

The utility model baffler inner core can be the various structural types of prior art inner core, the contact that between dividing plate and shell can be closely contact is connected, also can be weld together fixedly connected etc., expansion chamber can have one-level, secondary or three grades etc., preferred three grades of expansion chamber structures, the pollution effects that abates the noise is good, and the structural distribution form of three grades of expansion chambers also has a variety of, can directly use the technical solution of the utility model, wherein preferred two kinds of structure situation are as follows respectively:

A kind of structure situation: gas expansion chamber has three grades, constitute first expansion chamber between two dividing plates of front and back, constitute second expansion chamber between front head and preceding dividing plate, constitute the 3rd expansion chamber between rear bulkhead and rear head, the terminal ternary catalyzing unit that connects of the air pipe of dividing plate places in first expansion chamber before passing through, first expansion chamber is communicated with second expansion chamber, second expansion chamber is communicated with by connecting tube with the 3rd expansion chamber, tailpipe is connected on the 3rd expansion chamber, wherein preferably be communicated with by connecting tube between first expansion chamber and second expansion chamber, gas fills the air, is communicated with effective.

Another kind of structure situation: gas expansion chamber has three grades, constitute the 3rd expansion chamber between two dividing plates of front and back, constitute first expansion chamber between front head and preceding dividing plate, constitute second expansion chamber between rear bulkhead and rear head, the terminal ternary catalyzing unit that connects of air pipe that connects internal-combustion engine vent-pipe places in first expansion chamber, first expansion chamber is communicated with by connecting tube with second expansion chamber, the 3rd expansion chamber is communicated with second expansion chamber, tailpipe is communicated with on the 3rd expansion chamber, wherein preferably be communicated with by connecting tube between the 3rd expansion chamber and second expansion chamber, gas fills the air, is communicated with effective.

Noise reduction principle: after the next combustion gas process ternary catalyzing unit purification of internal-combustion engine vent-pipe, send forth, spread in first expansion chamber, deliver in second, third expansion chamber along drawing successively connecting tube then, carry out repeatedly dispersion, fill the air, noise is reduced to little as far as possible, reach basic elimination, discharge along tailpipe from the 3rd expansion chamber at last.

The utility model internal-combustion engine muffler structure is scientific and reasonable, noise pollution and tail gas pollution are little, good purification, it is convenient to change operation of components, can carry out the replacing of ternary catalyzing unit easily worn part at an easy rate, prolonged the working life of baffler integral body, reduced the manufacturing cost and use cost of baffler, and the profile of product, specification, model can be identical with existing product, be convenient to update and the market reception, be beneficial to popularization and application, be widely used on the various internal-combustion engines, the motor vehicle that comprise automobile, motorcycle, tractor etc., and steamer etc.

Description of drawings

Fig. 1, the utility model one example structure schematic representation.

Fig. 2, another example structure schematic representation of the utility model.

1,16, weld 30, the window of

front head

2,25,

second expansion chamber

3,18,

air pipe

4,17,

housing

5,21, preceding dividing

plate

6,28, connecting

tube

7,19, ternary catalyzing unit 8,

sealing cover

9,20,

first expansion chamber

10,23,

rear bulkhead

11,22, the

3rd expansion chamber

12,27,

rear head

13,26,

tailpipe

14,24, connecting

tube

15,31, internal-combustion engine vent-pipe 29, dividing plate and housing among the figure:.

Embodiment

The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.

As shown in Figure 1, internal-combustion engine baffler described in the utility model, comprise shell and inner core, shell is by front head 1, rear head 12 and housing 4 constitute, inner core is by dividing

plate

5,10 gas expansion chamber that form in the enclosure, air pipe and tailpipe 13 are formed, be connected with ternary catalyzing unit 7 on the air pipe 3 of connection internal-combustion engine vent-pipe 15 in the inner core, be provided with ternary catalyzing unit with the corresponding monolithic case in ternary catalyzing unit 7 positions and pick and place window, be fitted with sealing cover 8 on the window, sealing cover 8 is fastened on the window, corresponding respectively projection and the groove that is provided with fastening on sealing cover 8 and the window, be provided with Stamping Steel Ribbon between sealing cover 8 and window, have additional fixing bolt between sealing cover 8 and window.Gas expansion chamber has three grades, 5,10 on front and back two dividing plates constitute

first expansion chamber

9,5 on front head 1 and preceding dividing plate constitute

second expansion chamber

2,12 of rear bulkhead 10 and rear heads constitute the 3rd expansion chamber 11, the air pipe 3 terminal ternary catalyzing units 7 that connect of dividing plate 5 place in first expansion chamber 9 before passing through, 2 of first expansion chamber 9 and second expansion chambers were communicated with by connecting tube 14, and second expansion chamber 2 is communicated with by connecting tube 6 with the 3rd expansion chamber 11, and tailpipe 13 is connected on the 3rd expansion chamber 11.

In the application process, from the combustion gas of internal-combustion engine vent-pipe 15 along air pipe 3 purify through ternary catalyzing units 7 after, send forth, spread in first expansion chamber 9, deliver in second,

third expansion chamber

2,11 13 discharges from the 3rd expansion chamber 11 along tailpipe at last then along drawing successively connecting

tube

14,6.

As shown in Figure 2, internal-combustion engine baffler described in the utility model, comprise shell and inner core, shell is by front head 16, rear head 27 and housing 17 constitute, inner core is by dividing

plate

21,23 gas expansion chamber that form in the enclosure, air pipe and tailpipe 26 are formed, be connected with ternary catalyzing unit 19 on the air pipe 18 of connection internal-combustion engine vent-pipe 31 in the inner core, pick and place window 30 with the corresponding monolithic case in ternary catalyzing unit 19 positions is provided with ternary catalyzing unit 19, be fitted with sealing cover on the window 30, sealing cover is plugged on the

window

30,30 of sealing cover and windows are provided with Stamping Steel Ribbon, and 30 of sealing cover and windows have additional fixing bolt.Gas expansion chamber has three grades, 21,23 on front and back two dividing plates constitute the

3rd expansion chamber

22,21 on front head 16 and preceding dividing plate constitute

first expansion chamber

20,27 of rear bulkhead 23 and rear heads constitute second expansion chamber 25, the air pipe 18 terminal ternary catalyzing units 19 that connect that connect internal-combustion engine vent-pipe 31 place in first expansion chamber 20, first expansion chamber 20 is communicated with by connecting tube 28 with

second expansion chamber

25,25 of the 3rd expansion chamber 22 and second expansion chambers were communicated with by connecting tube 24, and tailpipe 26 is communicated with on the 3rd expansion chamber 22.

In the application process, from the combustion gas of internal-combustion engine vent-pipe 31 along air pipe 18 purify through ternary catalyzing units 19 after, send forth, spread in first expansion chamber 20, deliver in second,

third expansion chamber

25,22 26 discharges from the 3rd expansion chamber 22 along tailpipe at last then along drawing successively connecting

tube

28,24.

Claims

1, a kind of internal-combustion engine baffler, comprise shell and inner core, shell is made of front head, rear head and housing, the gas expansion chamber that inner core is formed in the enclosure by dividing plate, air pipe and tailpipe are formed, it is characterized in that in the inner core connecting on the air pipe of internal-combustion engine vent-pipe and be connected with ternary catalyzing unit, be provided with ternary catalyzing unit with the corresponding shell in ternary catalyzing unit position and pick and place window, be fitted with sealing cover on the window.

2, internal-combustion engine baffler according to claim 1 is characterized in that sealing cover is fastened on the window, is provided with Stamping Steel Ribbon between sealing cover and window.

3, internal-combustion engine baffler according to claim 2 is characterized in that corresponding respectively projection and the groove that is provided with fastening on sealing cover and the window, and has additional fixing bolt between the two.

4,, it is characterized in that shell is a monolithic case according to claim 1,2 or 3 described internal-combustion engine bafflers.

5, according to claim 1,2 or 3 described internal-combustion engine bafflers, it is characterized in that gas expansion chamber has three grades, constitute first expansion chamber between two dividing plates of front and back, constitute second expansion chamber between front head and preceding dividing plate, constitute the 3rd expansion chamber between rear bulkhead and rear head, the terminal ternary catalyzing unit that connects of the air pipe of dividing plate places in first expansion chamber before passing through, first expansion chamber is communicated with second expansion chamber, second expansion chamber is communicated with by connecting tube with the 3rd expansion chamber, and tailpipe is connected on the 3rd expansion chamber.

6, internal-combustion engine baffler according to claim 5 is characterized in that between first expansion chamber and second expansion chamber by being communicated with connecting tube.

7, according to claim 1,2 or 3 described internal-combustion engine bafflers, it is characterized in that gas expansion chamber has three grades, constitute the 3rd expansion chamber between two dividing plates of front and back, constitute first expansion chamber between front head and preceding dividing plate, constitute second expansion chamber between rear bulkhead and rear head, the terminal ternary catalyzing unit that connects of air pipe that connects internal-combustion engine vent-pipe places in first expansion chamber, first expansion chamber is communicated with by connecting tube with second expansion chamber, the 3rd expansion chamber is communicated with second expansion chamber, and tailpipe is communicated with on the 3rd expansion chamber.

8, internal-combustion engine baffler according to claim 7 is characterized in that between the 3rd expansion chamber and second expansion chamber by being communicated with connecting tube.