CN206280119U - Natural gas engine inlet and exhaust valve seat ring - Google Patents
Natural gas engine inlet and exhaust valve seat ring Download PDFInfo
- Publication number
- CN206280119U CN206280119U CN201621158939.1U CN201621158939U CN206280119U CN 206280119 U CN206280119 U CN 206280119U CN 201621158939 U CN201621158939 U CN 201621158939U CN 206280119 U CN206280119 U CN 206280119U
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- CN
- China
- Prior art keywords
- exhaust valve
- inlet
- valve seat
- seat ring
- working region
- 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.)
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Abstract
The utility model is related to a kind of natural gas engine inlet and exhaust valve seat ring, the inlet and exhaust valve seat ring is both provided with the main working region being mutually closely joined together and task region respectively, internal diameter and the external diameter difference in the main working region and task region are equal, the main working region is located at the bottom of inlet and exhaust valve seat ring, and be the part being in contact respectively with engine breathing door, inner round wall in the main working region is provided with band, the band is 55 °~65 ° with the angle degree of main working region inner round wall, step is set between the lower surface of the band and inlet and exhaust valve seat ring, the height of the step is 0.23mm~0.39mm.The utility model increased the support force along gas inlet outlet valve base coil axis direction on band, so as to reduce the wriggling between inlet and exhaust valve seat ring and inlet and exhaust valve, the sealing between inlet and exhaust valve seat ring and inlet and exhaust valve is improve, the degree of wear of inlet and exhaust valve seat ring is reduced.
Description
Technical field
The utility model belongs to technical field of engines, and in particular to a kind of natural gas engine inlet and exhaust valve seat ring.
Background technology
It is dirty with increasingly severe exhaust that the development of automobile and prime mover industry result in increasing considerably for consumption of petroleum
Dye, so as to restrict economic development, endangers environmental and human health impacts.Theory and practice shows because natural gas octane number is high, antiknock
Performance is good；Molecule C/Hratio is low, CO after burning2Discharge is low；Combustion characteristics is good, therefore engine for combusting natural gas can save stone
Fluid fluid fuel, reduces the noxious emission and carbon dioxide in its tail gas, reduces city PM2.5, reduces greenhouse gas emission,
Be conducive to the fundamental policy of energy-conserving and environment-protective.
But, when engine uses gas fuel or gaseous fuel with methane as main component, due to natural gas
Combustion product be mainly H2O and CO2, lubrication will not be played to inlet and exhaust valve seat ring, inlet and exhaust valve seat ring is exacerbated on the contrary
Abrasion.The characteristic requirements such as high temperature resistant therefore, to inlet and exhaust valve seat ring, wear-resistant, anti-oxidant are higher, certainly will improve into row
The manufacturing cost of valve retainer.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of natural gas engine inlet and exhaust valve seat ring, right
Gas inlet outlet valve base coil structures optimize design, on the basis of inlet and exhaust valve race material chemical composition is constant, it is ensured that can
There is good sealing.
The utility model is achieved in that a kind of natural gas engine inlet and exhaust valve seat ring of offer, the inlet and exhaust valve
Seat ring is both provided with the main working region being mutually closely joined together and task region respectively, the main working region and time
Internal diameter and the external diameter difference of working region are equal, and the main working region is located at the bottom of inlet and exhaust valve seat ring, and is and starts
The part that machine inlet and exhaust valve is in contact respectively, the inner round wall in the main working region is provided with band, the band with
The angle degree of main working region inner round wall is 55 °~65 °, setting table between the lower surface of the band and inlet and exhaust valve seat ring
Rank, the height of the step is 0.23mm~0.39mm.
Further, by a chamfered transition, the angle of the chamfering between the band and main working region inner round wall
Spend is 12 °~20 °.
Compared with prior art, natural gas engine inlet and exhaust valve seat ring of the present utility model, has the advantages that：
（1）The inlet and exhaust valve seat ring is casting, it is not necessary to additional processing, low manufacture cost；
（2）The inlet and exhaust valve seat ring is made up of main working region and task region, reduces the cost of raw material；
（3）The inlet and exhaust valve seat ring band angle is 55 °~65 °, is the increase on band along gas inlet outlet valve base
The support force in coil axis direction, so as to reduce the wriggling between inlet and exhaust valve seat ring and inlet and exhaust valve, improves inlet and exhaust valve
Sealing between seat ring and inlet and exhaust valve, reduces the degree of wear of inlet and exhaust valve seat ring.
Brief description of the drawings
Fig. 1 is the plan cross-section schematic diagram of the preferred embodiment of the utility model one；
Fig. 2 is A portions enlarged diagram in Fig. 1.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to the utility model.It should be appreciated that specific reality described herein
Apply example to be only used to explain the utility model, be not used to limit the utility model.
Refer to shown in Fig. 1 and Fig. 2, the preferred embodiment of the utility model natural gas engine inlet and exhaust valve seat ring,
Inlet valve seat ring is fitted in cylinder head air intake duct, and exhaust valve seat insert is fitted in cylinder head exhaust duct, and with inlet and exhaust valve and
Cylinder head forms sealed combustion chamber.
The inlet and exhaust valve seat ring 1 is both provided with the main working region 2 being mutually closely joined together and task respectively
Region 3.Internal diameter and the external diameter difference in the main working region 2 and task region 3 are equal.The main working region 2 be located at into
The bottom of exhaust valve seat insert 1, and task region 3 is located at the top of inlet and exhaust valve seat ring 1.The main working region 2 is and hair
The part that motivation inlet and exhaust valve is in contact respectively.
The surface that inner round wall in the main working region 2 is contacted with engine breathing door sealing is provided with band 4.
The folder angle beta of the band 4 and the inner round wall of main working region 2 is 55 °~65 °, the band 4 and inlet and exhaust valve seat ring 1
Lower surface between step 5 is set, the height L of the step 5 is 0.23mm~0.39mm.
By the transition of a chamfering 6 between the band 4 and the inner round wall of main working region 2, the angle of the chamfering 6（α）
It is 12 °~20 °.On the basis of ensureing that inlet and exhaust valve seat ring 1 meets design accuracy in process, processing is reduced as far as possible remaining
Amount, to reduce the cost of raw material and extension cutting-tool's used life.
According to gas fuel characteristic, on the basis of the use requirement that powdered metallurgical material meets natural gas engine,
Optimized by the structure of the band 4 to inlet and exhaust valve seat ring 1, to improve on band 4 along the axis of inlet and exhaust valve seat ring 1
The support force in direction, so as to reduce the wriggling between inlet and exhaust valve seat ring 1 and inlet and exhaust valve, improves inlet and exhaust valve seat ring 1
Sealing and between inlet and exhaust valve, reduces the degree of wear of inlet and exhaust valve seat ring 1, different so as to solve inlet and exhaust valve seat ring 1
Normal wear problem, and ensure that enough valve clearances, makes engine meet stress alternation and full speed full load long duration test
Standard.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (2)
1. a kind of natural gas engine inlet and exhaust valve seat ring, the inlet and exhaust valve seat ring（1）It is both provided with mutually closely connecting respectively
The main working region being connected together（2）With task region（3）, the main working region（2）With task region（3）Internal diameter
Distinguish equal, the main working region with external diameter（2）Positioned at inlet and exhaust valve seat ring（1）Bottom, and be and engine breathing
The part that door is in contact respectively, in the main working region（2）The surface that is contacted with engine breathing door sealing of inner round wall
It is provided with band（4）, it is characterised in that the band（4）With main working region（2）The angle degree of inner round wall（β）It is 55 °
~65 °, the band（4）With inlet and exhaust valve seat ring（1）Lower surface between step is set（5）, the step（5）Height
（L）It is 0.23mm~0.39mm.
2. natural gas engine inlet and exhaust valve seat ring as claimed in claim 1, it is characterised in that the band（4）With master
Working region（2）Pass through a chamfering between inner round wall（6）Transition, the chamfering（6）Angle（α）It is 12 °~20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158939.1U CN206280119U (en) | 2016-11-01 | 2016-11-01 | Natural gas engine inlet and exhaust valve seat ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158939.1U CN206280119U (en) | 2016-11-01 | 2016-11-01 | Natural gas engine inlet and exhaust valve seat ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280119U true CN206280119U (en) | 2017-06-27 |
Family
ID=59085984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621158939.1U Active CN206280119U (en) | 2016-11-01 | 2016-11-01 | Natural gas engine inlet and exhaust valve seat ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963219A (en) * | 2021-03-29 | 2021-06-15 | 安徽江淮汽车集团股份有限公司 | Valve seat ring, gasoline engine and automobile |
-
2016
- 2016-11-01 CN CN201621158939.1U patent/CN206280119U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963219A (en) * | 2021-03-29 | 2021-06-15 | 安徽江淮汽车集团股份有限公司 | Valve seat ring, gasoline engine and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180621 Address after: 215151 No. 30 supporting industrial park, export processing zone, Suzhou hi tech Zone, Suzhou, Jiangsu Patentee after: Suzhou Mashan New Energy Power Technology Co., Ltd. Address before: 223005 Haikou Road, Huaian economic and Technological Development Zone, Huaian, Jiangsu, 9 Patentee before: Jiangsu Shang Huai Dynamics Co., Ltd |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: 223005 No. 9, Haikou Road, Huaian economic and Technological Development Zone, Huaian, Jiangsu Patentee after: Jiangsu shanghuai Power Co., Ltd Address before: 215151 No. 30 supporting industrial park, export processing zone, Suzhou hi tech Zone, Suzhou, Jiangsu Patentee before: SUZHOU SMAPOW NEW ENERGY POWER TECHNOLOGY Co.,Ltd. |