CN206429290U - The exhaust pipe structure of tractor four-cylinder diesel engine - Google Patents
The exhaust pipe structure of tractor four-cylinder diesel engine Download PDFInfo
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- CN206429290U CN206429290U CN201621339820.4U CN201621339820U CN206429290U CN 206429290 U CN206429290 U CN 206429290U CN 201621339820 U CN201621339820 U CN 201621339820U CN 206429290 U CN206429290 U CN 206429290U
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- cylinder
- exhaust manifold
- exhaust
- diesel engine
- tractor
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Abstract
The utility model discloses a kind of exhaust pipe structure of tractor four-cylinder diesel engine, including：Four gas exhaust tube flanges, it is determined according to the position of the exhaust outlet of tractor four-cylinder diesel engine；Booster flange, it is arranged on the position of center line of the first cylinder of tractor four-cylinder diesel engine and the second cylinder；3rd cylinder exhaust manifold and the 4th cylinder exhaust manifold, its center curve are tangential on blast pipe center line, and the outline curve of the 3rd cylinder exhaust manifold and the 4th cylinder exhaust manifold is all connected to four corners of booster interface；And first cylinder exhaust manifold and the second cylinder exhaust manifold, the outline curve of the first cylinder exhaust manifold and the second cylinder exhaust manifold is all connected to four side centers of booster interface.The exhaust pipe structure can organize rational air motion, reduce the flow resistance of exhaust, increase discharge coefficient, make flowing more unimpeded, strengthen the response of booster.
Description
Technical field
The utility model is related to diesel engine arts, more particularly to a kind of exhaust pipe structure of tractor four-cylinder diesel engine.
Background technology
Blast pipe as diesel engine a peripheral component, its design quality have a great impact to engine performance,
Particularly to engine with supercharger, it directly affects the utilization of exhaust energy, and also affects engine on vehicle
Arrangement.At present, non-rice habitats engine whole vehicle arrangement space is compact, and particularly tractor is arranged.This overall dimension to diesel engine
There is higher requirement, it is necessary to necessary adjustment is carried out to diesel engine peripheral element, the supporting demand of vehicle factory could be met.Due to
The limitation of tractor hood, and compact profile trend, the arrangement for increasing the parts such as Diesel Engine Exhaust Pipe, booster are difficult
Degree so that the design of blast pipe is shorter and shorter.Simultaneously as fluid has viscosity and tube wall also has roughness, make blast pipe
Actual flow be less than theoretical delivery.Therefore, the blast pipe arrangement of diesel engine must take into full account vehicle space and blast pipe
The factors such as structure, make full use of each space, and the discharge coefficient of blast pipe is improved as far as possible, makes exhaust more unimpeded.However, traditional
The blast pipe of matching tractor is primarily present two problems：
1st, the structure all same of each manifold curvature radius of conventional exhaust pipe and manifold, and being segmented market due to each
The position of diesel pressure booster is different, causes each cylinder venting conduit inlet to differ to exhaust outlet length, is easily caused each cylinder row
Atmidometer is different, and it is uneven to ultimately result in each cylinder extraction flow coefficient, and then can produce influence for cylinder by cylinder uniformity.This
Outside, each cylinder extraction flow is uneven, diesel engine is produced fluctuation in the cycle period of low speed segment, and rotating speed is lower, fluctuates brighter
It is aobvious, decline the efficiency of booster, meanwhile, booster is under impact repeatedly, and its reliability can also decline.
2nd, in order to avoid the interference with hood, the blast pipe of many tractors is all personal design, eliminates exhaust manifold,
The separation of turning gas flowing can so be caused, the actual flow of each cylinder can all be reduced, and cause exhaust energy to lose, booster
Response be deteriorated, directly affect the performance of diesel engine, make fuel economy poor.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is to provide a kind of exhaust pipe structure of tractor four-cylinder diesel engine, different by designing
The exhaust manifold of angle of turn, differently curved radius, increases radius of turn, can organize rational air motion, reduces exhaust
Flow resistance, increase discharge coefficient, make flowing more unimpeded, strengthen booster response.
To achieve the above object, the utility model provides a kind of exhaust pipe structure of tractor four-cylinder diesel engine, including：
Four gas exhaust tube flanges, it is determined according to the position of the exhaust outlet of tractor four-cylinder diesel engine；Booster flange, it, which is arranged on, drags
On first cylinder of machine drawing four-cylinder diesel engine and the position of center line of the second cylinder；3rd cylinder exhaust manifold and the 4th cylinder exhaust manifold,
The center curve of 3rd cylinder exhaust manifold and the center curve of the 4th cylinder exhaust manifold are tangential on blast pipe center line, blast pipe
Center line is located at cylinder head end face to the centre of booster and blast pipe centerline parallel cylinder head end face, the 3rd cylinder exhaust manifold
Four corners of booster interface are all connected to the outline curve of the 4th cylinder exhaust manifold；And the first cylinder exhaust manifold
With the second cylinder exhaust manifold, the center curve of the center curve of the first cylinder exhaust manifold and the second cylinder exhaust manifold is in center line
The outline curve of axial symmetry, the first cylinder exhaust manifold and the second cylinder exhaust manifold is all connected to four side centers of booster interface
Position.
Preferably, the center curve of the 3rd cylinder exhaust manifold and the corner cut of blast pipe center line are from 20 ° -30 °.
Preferably, the center curve of the 4th cylinder exhaust manifold and the corner cut of blast pipe center line are from 30 ° -40 °.
Compared with prior art, the utility model has the advantages that：According to gas exhaust tube flange and booster flange
Position, with reference to the distance of blast pipe center line, be fitted for each cylinder exhaust manifold curve so that each exhaust manifold
Structure is all different, and the exhaust pipe structure has space small, and discharge coefficient is high, and the features such as flow velocity is good can organize rational gas
Stream motion, reduces exhaust back pressure, reduces delivery temperature；Simultaneously can improve in low speed when booster response performance, make to start
Machine increases in middle low speed segment charge flow rate, and fuel is able to sufficiently burn, and reduces fuel consumption, improves engine emission grade.
Brief description of the drawings
Fig. 1 is the front view of the exhaust pipe structure according to tractor four-cylinder diesel engine of the present utility model；
Fig. 2 is the upward view of the exhaust pipe structure according to tractor four-cylinder diesel engine of the present utility model；
Fig. 3 is the curve synoptic diagram of the exhaust pipe structure according to tractor four-cylinder diesel engine of the present utility model；
Fig. 4 is innermost being in each cylinder exhaust manifold according to the exhaust pipe structure of tractor four-cylinder diesel engine of the present utility model
The location diagram of line.
Embodiment
Below in conjunction with the accompanying drawings, embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in Figures 1 to 4, according to a kind of exhaust of tractor four-cylinder diesel engine of the utility model embodiment
Tubular construction, including four gas exhaust tube flanges (12,22,32,42), booster flange 51, the 3rd cylinder exhaust manifold 3 and the 4th cylinder row
The cylinder exhaust manifold 1 of gas manifold 4 and first and the second cylinder exhaust manifold 2, four gas exhaust tube flanges are respectively the first cylinder exhaust tube method
Blue 12, second cylinder gas exhaust tube flange 22, the 3rd cylinder gas exhaust tube flange 32 and the 4th cylinder gas exhaust tube flange 42, this four exhaust tube method
The position of the blue exhaust outlet according to tractor four-cylinder diesel engine determines that booster flange 51 is arranged on tractor four-cylinder diesel engine
On the position of center line of first cylinder and the second cylinder, in the cylinder exhaust manifold 4 of center curve 31 and the 4th of the 3rd cylinder exhaust manifold 3
Innermost being line 41 is tangential on blast pipe center line 6, and blast pipe center line 6 is located at cylinder head end face to the centre of booster and exhaust
The outline curve of the parallel cylinder lid end face of tube hub line 6, the 3rd cylinder exhaust manifold 3 and the 4th cylinder exhaust manifold 4 is all connected to
The center curve of four corners (participation Fig. 3) of booster interface, the first cylinder exhaust manifold 1 and the second cylinder exhaust manifold 2 with
The center line of first cylinder and the second cylinder is in the outline curve of symmetric position, the first cylinder exhaust manifold 1 and the second cylinder exhaust manifold 2
It is all connected to four side centers of booster interface.
In such scheme, exhaust pipe structure is, for matching tractor type, to be installed by its space and silencer
Position limitation, exhaust manifold is too short, and the position of booster can only be arranged on the second cylinder.In order to avoid this structure influences to be pressurized
The response of device and the performance of engine, it is necessary to optimized to traditional blast pipe, take into full account each exhaust outlet and supercharging
The distance of device import, optimizes the length and bending radius of inlet manifold, it is ensured that the uniformity and discharge coefficient of each cylinder exhaust.
The exhaust pipe structure of the present embodiment, with reference to Fig. 3, it is first determined four gas exhaust tube flanges (12,22,32,42) and increasing
The position of depressor flange 51, it is then determined the position of blast pipe center line 6, the position of blast pipe center line 6 is cylinder head end face
To the centre of booster and the parallel cylinder lid end face of blast pipe center line 6, the vehicle space that can also be segmented market according to each
Determine its distance with cylinder head end face.According to the 4th cylinder gas exhaust tube flange 42 and the cylinder of Position Design the 4th of booster flange 51
Exhaust manifold 4, with reference to the distance of blast pipe center line 6, by the center curve 41 and blast pipe that adjust the 4th cylinder exhaust manifold 4
The angle [alpha] of center line 6, selects as far as possible big bending radius, determines the center curve 41 of the 4th cylinder exhaust manifold, it is ensured that its is smooth
Transition, the position for being fitted section 8 is adjusted further according to center curve 41, the 4th cylinder exhaust manifold curve is finally fitted.It is used as one
Preferred embodiment is planted, is analyzed according to CFD, the α angles are best in 30 ° -40 ° water conservancy diversion effects to exhaust.Further according to the 3rd cylinder row
The cylinder exhaust manifold 3 of Position Design the 3rd of gas flange 32 and booster flange 51, by adjusting in the 3rd cylinder exhaust manifold 3
The angle β of innermost being line 32 and blast pipe center line 6, it is ensured that the gentle property of exhaust manifold, and determine to be fitted the position in section, most
After fit the 3rd cylinder exhaust manifold curve.As a kind of preferred embodiment, analyzed according to CFD, the β angles are right at 20 ° -30 °
The water conservancy diversion effect of exhaust is best.First, second cylinder exhaust manifold is designed with same method.
It can be seen in figure 3 that the structure of each exhaust manifold is all different, the 3rd cylinder exhaust manifold 3 and the 4th cylinder row
The outline curve of gas manifold 4 is all connected to four corners of booster interface, and the first cylinder exhaust manifold 1 and the second cylinder are arranged
The outline curve of gas manifold 2 is directly connected in four side centers of booster interface.This be consider exhaust manifold and
The position of booster, makes to allow the blast pipe more fairing fitting smooth, has adapted to diesel engine for compactedness, reliable
Property, assembling and demand attractive in appearance.
To sum up, the exhaust pipe structure of the tractor four-cylinder diesel engine of the present embodiment, small with space, and discharge coefficient is high, stream
The features such as speed is good, can organize rational air motion, reduce exhaust back pressure, reduce delivery temperature；It can carry high, normal, basic simultaneously
The response performance of booster when fast, makes engine increase in middle low speed segment charge flow rate, and fuel is able to sufficiently burn, reduction combustion
Oil consumption, improves engine emission grade.
The foregoing description to specific illustrative embodiment of the present utility model be in order to illustrate and illustration purpose.These
Description is not wishing to being defined to the utility model into disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining certain principles of the present utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the present utility model
Property embodiment and a variety of selections and change.Scope of the present utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (3)
1. a kind of exhaust pipe structure of tractor four-cylinder diesel engine, it is characterised in that including：
Four gas exhaust tube flanges, it is determined according to the position of the exhaust outlet of tractor four-cylinder diesel engine；
Booster flange, it is arranged on the position of center line of the first cylinder of the tractor four-cylinder diesel engine and the second cylinder；
3rd cylinder exhaust manifold and the 4th cylinder exhaust manifold, the center curve of the 3rd cylinder exhaust manifold and the 4th cylinder row
The center curve of gas manifold is tangential on blast pipe center line, and the blast pipe center line is located at cylinder head end face to booster
Cylinder head end face described in middle and described blast pipe centerline parallel, the 3rd cylinder exhaust manifold and the 4th cylinder are vented discrimination
The outline curve of pipe is all connected to four corners of the booster interface；And
First cylinder exhaust manifold and the second cylinder exhaust manifold, the center curve of the first cylinder exhaust manifold and second cylinder row
The center curve of gas manifold and the center line axisymmetricly, the first cylinder exhaust manifold and the second cylinder exhaust manifold
Outline curve is all connected to four side centers of the booster interface.
2. the exhaust pipe structure of tractor four-cylinder diesel engine according to claim 1, it is characterised in that the 3rd cylinder row
The center curve of gas manifold and the corner cut of the blast pipe center line are from 20 ° -30 °.
3. the exhaust pipe structure of tractor four-cylinder diesel engine according to claim 1, it is characterised in that the 4th cylinder row
The center curve of gas manifold and the corner cut of the blast pipe center line are from 30 ° -40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621339820.4U CN206429290U (en) | 2016-12-08 | 2016-12-08 | The exhaust pipe structure of tractor four-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621339820.4U CN206429290U (en) | 2016-12-08 | 2016-12-08 | The exhaust pipe structure of tractor four-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429290U true CN206429290U (en) | 2017-08-22 |
Family
ID=59586150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621339820.4U Expired - Fee Related CN206429290U (en) | 2016-12-08 | 2016-12-08 | The exhaust pipe structure of tractor four-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481425A (en) * | 2016-12-08 | 2017-03-08 | 广西玉柴机器股份有限公司 | The exhaust pipe structure of tractor diesel engine |
| CN110030073A (en) * | 2019-05-05 | 2019-07-19 | 柳州上汽汽车变速器有限公司柳东分公司 | A kind of exhaust system of gasoline engine |
-
2016
- 2016-12-08 CN CN201621339820.4U patent/CN206429290U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481425A (en) * | 2016-12-08 | 2017-03-08 | 广西玉柴机器股份有限公司 | The exhaust pipe structure of tractor diesel engine |
| CN106481425B (en) * | 2016-12-08 | 2018-01-30 | 广西玉柴机器股份有限公司 | The exhaust pipe structure of tractor diesel engine |
| CN110030073A (en) * | 2019-05-05 | 2019-07-19 | 柳州上汽汽车变速器有限公司柳东分公司 | A kind of exhaust system of gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20181208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |