CN106837589A - Engine exhaust structure - Google Patents
Engine exhaust structure Download PDFInfo
- Publication number
- CN106837589A CN106837589A CN201710245062.2A CN201710245062A CN106837589A CN 106837589 A CN106837589 A CN 106837589A CN 201710245062 A CN201710245062 A CN 201710245062A CN 106837589 A CN106837589 A CN 106837589A
- Authority
- CN
- China
- Prior art keywords
- air flue
- row air
- exhaust
- row
- exhaust duct
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention belongs to technical field of engines, it is related to a kind of engine exhaust structure, including first row air flue, second row air flue, both the first row air flue, second row air flue ports of export are gathered together, form exhaust duct outlet, first exhaust road has the import of first exhaust road, and second exhaust road has the import of second exhaust road；The inlet end throat location of first row air flue sets the first sideshake chamber, the inlet end throat location of second row air flue sets the second sideshake chamber, first row air flue is provided with the first guiding gutter near the inner chamber upper surface of the exhaust duct port of export, and second row air flue is provided with the second guiding gutter near the inner chamber upper surface of the exhaust duct port of export.Two-way exhaust duct in product of the present invention is vented respectively, does not interfere with each other, smooth in exhaust, the quick outflow air flue of guiding gutter guiding exhaust, and when exhaust valve aperture is smaller, exhaust is quickly discharged by sideshake chamber.
Description
Technical field
The invention belongs to technical field of engines, it is related to a kind of engine exhaust structure.
Background technology
The performance of exhaust duct is typically evaluated with discharge coefficient, and discharge coefficient directly reflects the quality and engine of air flue
Performance quality, so the optimization of air flue and checking all carried out by evaluation index of discharge coefficient.Exhaust duct is to engine
Performance has a certain impact, and the design principle of exhaust duct is to try to improve discharge coefficient, reduces exhaust back pressure, reduces residual in cylinder
Remaining waste gas, is beneficial to the burning of subsequent cycle and reduces discharge.
Using fusion chamber is set after two exhaust path inlets more than traditional engine cylinder cover exhaust duct, it is vented two-way
Fusion chamber is exported from exhaust duct and discharged again after converging；Using the structure that fairing is round and smooth more than exhaust duct.
Above-mentioned design, because two-way exhaust is after fusion chamber is converged, two-way exhaust is interfered with each other, and disorder is produced in fusion chamber,
Exhaust kinetic energy reduces, fusion cavity pressure increase, is unfavorable for exhaust discharge.At the exhaust initial stage, exhaust valve aperture is smaller, exhaust stream
Amount is smaller.
The content of the invention
The present invention is regarding to the issue above, there is provided a kind of engine exhaust structure, the air discharging structure advantages of simple, can have
Effect improves the exhaust efficiency of engine.
According to technical scheme：A kind of engine exhaust structure, it is characterised in that：Including first row air flue,
Both second row air flue, the first row air flue, second row air flue ports of export are gathered together, form exhaust duct outlet, first
Exhaust duct has first row tracheal entrance, and second exhaust road has the import of second exhaust road；The inlet end aditus laryngis of first row air flue
Position sets the first sideshake chamber, and the inlet end throat location of second row air flue sets the second sideshake chamber, and first row air flue is near row
The inner chamber upper surface at air passage outlet end is provided with the first guiding gutter, and second row air flue sets near the inner chamber upper surface of the exhaust duct port of export
There is the second guiding gutter.
As a further improvement on the present invention, both the first row tracheal entrance, second row tracheal entrance axis are mutual
It is arranged in parallel.
As a further improvement on the present invention, the first sideshake chamber, the second sideshake chamber by along with valve guide bushing bottom
The cylinder cap excircle of portion's interference fit increases the streamlined chamber heaved and is formed.
As a further improvement on the present invention, first guiding gutter, the connection exhaust duct outlet of the second guiding gutter and two
Cylinder cap at exhaust duct valve guide bushing, the first guiding gutter, the second guiding gutter use arc transition structure
As a further improvement on the present invention, the first row air flue entrance point of the first row air flue is cylindrical, second exhaust
The second row air flue entrance point in road is cylindrical.
The technical effects of the invention are that：Two-way exhaust duct in product of the present invention is vented respectively, does not interfere with each other, and is vented suitable
Freely, the quick outflow air flue of guiding gutter guiding exhaust, when exhaust valve aperture is smaller, exhaust is quickly discharged by sideshake chamber.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Specific embodiment
Specific embodiment of the invention is further described below in conjunction with the accompanying drawings.
In Fig. 1, including first row air flue 1, second row air flue 2, first row tracheal entrance 3, second row tracheal entrance 4,
One sideshake chamber 5, the second sideshake chamber 6, etc..
As shown in figure 1, the present invention is a kind of engine exhaust structure, including first row air flue 1, second row air flue 2, institute
State both first row air flue 1, second row air flue 2 ports of export to be gathered together, form exhaust duct outlet 9, first row air flue 1 has
First row tracheal entrance 3, second row air flue 2 has second row tracheal entrance 4；The inlet end throat location of first row air flue 1 sets
The first sideshake chamber 5 is put, the inlet end throat location of second row air flue 2 sets the second sideshake chamber 6, and first row air flue 1 is near exhaust
The inner chamber upper surface that road exports 9 ends is provided with the first guiding gutter 7, and second row air flue 2 exports the inner chamber upper surface at 9 ends near exhaust duct
It is provided with the second guiding gutter 8.Operationally, the first guiding gutter 7 and the second guiding gutter 8 can guide gas quickly to circulate, it is to avoid row
Flow of air is disorderly.
Both axis of first row tracheal entrance 3, second row tracheal entrance 4 are arranged in parallel.
The first sideshake chamber 5, the second sideshake chamber 6 are by along the cylinder cap excircle with valve guide bushing bottom interference fit
Increase the streamlined chamber heaved to be formed.First sideshake chamber 5 and the second sideshake chamber 6 can effectively expand exhaust duct partial cross section
Product, when exhaust valve aperture is smaller, i.e. instroke early stage, air-flow is flowed along the wall of exhaust duct, and attached in valve
Near air-flow is less, therefore increase exhaust duct wall sectional area can accelerate the air current flow at exhaust initial stage.
Cylinder at first guiding gutter 7, the connection exhaust duct outlet of the second guiding gutter 8 and two exhaust duct valve guide bushings
Lid, the first guiding gutter 7, the second guiding gutter 8 use arc transition structure.First guiding gutter 7 and the second guiding gutter 8 cause exhaust duct
The overflow section product change exported from valve guide bushing bottom to exhaust duct is uniform, reduces the flowing that overflow section product mutation causes
Disorder, and increase guide effect so that exhaust is quick to discharge from cylinder.
The end of first row tracheal entrance 3 of first row air flue 1 is cylindrical, the end of second row tracheal entrance 4 of second row air flue 2
It is cylindrical.
The course of work of the invention is as follows：Product of the present invention operationally, first row air flue 1 and second row air flue 2 both
Inlet end is separated, and sharing one outlet in discharge end discharges gas, and two-way exhaust does not interfere with each other, and is flowed from exhaust duct respectively
To exhaust duct outlet, gas is discharged in subsequent common gas exhaust passage outlet.
Claims (5)
1. a kind of engine exhaust structure, it is characterised in that：Including first row air flue（1）, second row air flue（2）, described
One exhaust duct（1）, second row air flue（2）Both ports of export are gathered together, form exhaust duct outlet（9）, first row air flue（1）
With first row tracheal entrance（3）, second row air flue（2）With second row tracheal entrance（4）；First row air flue（1）Air inlet
End throat location sets the first sideshake chamber（5）, second row air flue（2）Inlet end throat location set the second sideshake chamber（6）, the
One exhaust duct（1）Near exhaust duct outlet（9）The inner chamber upper surface at end is provided with the first guiding gutter（7）, second row air flue（2）It is close to
Exhaust duct is exported（9）The inner chamber upper surface at end is provided with the second guiding gutter（8）.
2. engine exhaust structure as claimed in claim 1, it is characterised in that：The first row tracheal entrance（3）, second
Exhaust duct import（4）Both axis are arranged in parallel.
3. engine exhaust structure as claimed in claim 1, it is characterised in that：The first sideshake chamber（5）, the second sideshake
Chamber（6）Formed by increasing the streamlined chamber heaved along the cylinder cap excircle with valve guide bushing bottom interference fit.
4. engine exhaust structure as claimed in claim 1, it is characterised in that：First guiding gutter (7), the second water conservancy diversion
Groove（8）Cylinder cap at the outlet of connection exhaust duct and two exhaust duct valve guide bushings, the first guiding gutter (7), the second guiding gutter（8）Adopt
Use arc transition structure.
5. engine exhaust structure as claimed in claim 1, it is characterised in that：The first row air flue（1）First row
Tracheal entrance（3）Hold cylindrical, second row air flue（2）Second row tracheal entrance（4）End is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245062.2A CN106837589A (en) | 2017-04-14 | 2017-04-14 | Engine exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245062.2A CN106837589A (en) | 2017-04-14 | 2017-04-14 | Engine exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837589A true CN106837589A (en) | 2017-06-13 |
Family
ID=59148179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710245062.2A Pending CN106837589A (en) | 2017-04-14 | 2017-04-14 | Engine exhaust structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287859A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN114320650A (en) * | 2022-03-16 | 2022-04-12 | 潍柴动力股份有限公司 | Cylinder head and engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4995359A (en) * | 1988-06-28 | 1991-02-26 | Nissan Motor Co., Ltd. | Combustion chamber for internal combustion engine |
| JPH04166612A (en) * | 1990-10-31 | 1992-06-12 | Toyota Motor Corp | Cylinder injection type internal combustion engine |
| US5260116A (en) * | 1987-03-24 | 1993-11-09 | Ngk Insulators, Ltd. | Ceramicm port liners |
| CN101392700A (en) * | 2008-10-17 | 2009-03-25 | 梁珪龙 | Exhaust for internal combustion engine |
| CN103147870A (en) * | 2013-03-18 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Engine and cylinder cover thereof |
| DE102012020381A1 (en) * | 2012-10-18 | 2014-04-24 | Volkswagen Aktiengesellschaft | Cylinder head for vehicle-mounted engine, has first and second channels extended along respective guide curves which have different profiles, so that mutual interference between flow of first channels and flow of second channels is low |
-
2017
- 2017-04-14 CN CN201710245062.2A patent/CN106837589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260116A (en) * | 1987-03-24 | 1993-11-09 | Ngk Insulators, Ltd. | Ceramicm port liners |
| US4995359A (en) * | 1988-06-28 | 1991-02-26 | Nissan Motor Co., Ltd. | Combustion chamber for internal combustion engine |
| JPH04166612A (en) * | 1990-10-31 | 1992-06-12 | Toyota Motor Corp | Cylinder injection type internal combustion engine |
| CN101392700A (en) * | 2008-10-17 | 2009-03-25 | 梁珪龙 | Exhaust for internal combustion engine |
| DE102012020381A1 (en) * | 2012-10-18 | 2014-04-24 | Volkswagen Aktiengesellschaft | Cylinder head for vehicle-mounted engine, has first and second channels extended along respective guide curves which have different profiles, so that mutual interference between flow of first channels and flow of second channels is low |
| CN103147870A (en) * | 2013-03-18 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Engine and cylinder cover thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287859A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN114320650A (en) * | 2022-03-16 | 2022-04-12 | 潍柴动力股份有限公司 | Cylinder head and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |