CN105673119A - Valve Seat Structure - Google Patents
Valve Seat Structure Download PDFInfo
- Publication number
- CN105673119A CN105673119A CN201510725640.3A CN201510725640A CN105673119A CN 105673119 A CN105673119 A CN 105673119A CN 201510725640 A CN201510725640 A CN 201510725640A CN 105673119 A CN105673119 A CN 105673119A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- high hardness
- valve
- hardness material
- couplings
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
- F01L3/04—Coated valve members or valve-seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
-
- 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
Abstract
The invention discloses a valve seat structure. The valve seat structure includes a cylinder head configured to be mounted at an upper part of a combustion chamber, at least one valve port configured to be formed at a part of the cylinder head being opened and closed by a valve, and a valve seat configured to be mounted along an inner circumferential surface of the valve port, wherein a part of the valve seat is provided with a high hardness material portion made from a high hardness material.
Description
The cross reference of related application
This application claims and submit to the right of priority of the Korean Patent Application No. 10-2014-0172873 of Department of Intellectual Property of Korea S on December 4th, 2014, its whole content is incorporated herein by reference.
Technical field
Present disclosure relates to valve seat construction, and more specifically, it relates to can be improved the valve seat construction of the wearing quality of valve seat by the part forming valve seat by high hardness material.
Background technology
Usually, engine is that the thermal power transfer produced by combustion fuel is become kinetic energy to produce the equipment of power. Engine comprises cylinder block and head.
Cylinder body forms the framework of engine and some engine parts are attached to cylinder body. Cylinder head is arranged on the top of cylinder body and forms combustion chamber together with cylinder body. Cylinder head is provided with the intake valve of opening and closing inlet mouth and the vent valve of opening and closing venting port, and the end of intake valve and vent valve is provided with valve head separately.
For the valve head being attached to cylinder completely, the inside of cylinder head is provided with valve seat. When opening and closing inlet mouth or venting port, valve head can contact valve seat to keep combustion chamber sealing. Therefore, it is possible to prevent the gas leakage of combustion chamber and improve thermo-efficiency.
But, under valve seat is exposed to the heat of combustion chamber, in the fuel combustion of combustion chamber place. Therefore, valve seat must have wear resistance, shock-resistance and thermotolerance.
Existing valve seat uses all surface by contact valve head to couple the method for high hardness material, or existing valve seat uses the method that copper penetration enters valve seat to improve thermal conductivity.
But, owing to high hardness material generally has low heat conductivity, so the method that all surface of contact valve head couples high hardness material can greatly make the thermal conductivity of valve seat worsen. As a result, the heat being delivered to valve seat can not be dispersed into outside. In addition, the manufacturing cost of valve seat can be increased along the high hardness material that the inner peripheral surface of valve seat couples with all parts contacting valve head.
In addition, copper components permeate can be entered the contact part of valve seat and valve head and reduce the wear resistance of valve seat by the method that copper penetration enter valve seat.
In addition, combustion chamber has the change temperature depending on position. Owing to the temperature of combustion chamber changes according to position, so the temperature forming the cylinder head of combustion chamber also changes according to position. A part for cylinder head may produce relatively high heat and its other parts may produce relatively low heat.
In addition, as cylinder head, the valve seat being arranged in cylinder head has the differing temps depending on position. Therefore, a part with the temperature relatively higher than the temperature of other parts for valve seat may thermal distortion, due to a part of thermal distortion of valve seat, valve seat can not may be attached to valve head completely, and gas may leak between valve seat and valve head. This may make engine power deterioration or damage engine.
Being only the background technology understanding present disclosure to strengthen in information above disclosed in this background section, therefore, above information may comprise and not be formed in the information that this state is prior art known to those skilled in the art.
Summary of the invention
Being devoted to make present disclosure to provide a kind of valve seat construction, wherein, the part higher than preset temperature of valve seat is formed by high hardness material and is convenient to the assembling of valve seat.
The illustrative embodiments of present disclosure provides a kind of valve seat construction, comprising: cylinder head, is configured to be arranged on the top of combustion chamber; At least one valve port, is configured to be formed in the part place of cylinder head, carrys out opening and closing by intake valve or vent valve; And valve seat, it is configured to the inner peripheral surface along valve port and installs, wherein, a part for valve seat is provided with the high hardness material portion being made up of high hardness material and high hardness material portion is only formed in the high-temperature part of valve seat.
High hardness material portion can present the zygomorphy of the straight line based on the center through sparking plug and valve port as axle.
The scope of the central angle of fan-shaped arc is from 10 ° to 350 °.
High hardness material portion can be made up of a kind of material.
High hardness material portion can be made up of at least one material and high hardness material can be formed in the position contacting valve.
High hardness material portion can have a kind of material of copper component to make by wherein infiltration.
High hardness material portion can be made up of at least one material and high hardness material can be formed in contact valve position and its inner permeable has copper component.
High hardness material portion can comprise couplings, and this couplings is from high hardness material portion projection, and cylinder head also can have the part being provided with the flute profile installation portion corresponding with couplings, and couplings and installation portion can be coupled to each other.
High hardness material portion can have the part being provided with flute profile couplings, and cylinder head also can have the part in the installation portion being provided with the shape for lugs corresponding with couplings, and couplings and installation portion can be coupled to each other.
Accompanying drawing explanation
Fig. 1 is the skeleton view of the valve seat construction of the illustrative embodiments according to present disclosure.
Fig. 2 is the skeleton view of the valve seat of the illustrative embodiments according to present disclosure.
Fig. 3 is the enlarged view of the part " A " of Fig. 2.
Fig. 4 is the fragmentary, perspective view of the cylinder head of the valve seat being wherein provided with the illustrative embodiments according to present disclosure.
Fig. 5 is the front view of the common cylinder head being provided with valve seat.
Fig. 6 is the temperature distributing curve diagram of the valve seat of Fig. 5.
Fig. 7 is the skeleton view of the valve seat of another illustrative embodiments according to present disclosure.
Fig. 8 is the fragmentary, perspective view of the cylinder head of the valve seat being wherein provided with the illustrative embodiments according to present disclosure.
Embodiment
In the following detailed description, only diagrammatically illustrate simply and describe some illustrative embodiments of present disclosure. As those skilled in the art will be appreciated that, when completely not departing from spirit or scope of the present disclosure, it is possible to by various different mode, described enforcement mode is modified.
Run through this specification sheets, unless explicitly described as in contrast, otherwise word " comprises (comprise) " and such as " comprises (comprises) " or the modification of " comprising (comprising) " should be understood to imply and comprises described element, but does not get rid of any other element.
Running through this specification sheets, same reference numerals refers to for the similar elements in specification sheets in the whole text.
With reference to the accompanying drawings the exemplary embodiment of present disclosure is described in detail hereinafter.
Fig. 1 is the skeleton view of the valve seat construction of the illustrative embodiments according to present disclosure, Fig. 2 is the skeleton view of the valve seat of the illustrative embodiments according to present disclosure, Fig. 3 is the enlarged view of the part " A " of Fig. 2, and Fig. 4 is the fragmentary, perspective view of cylinder head of the valve seat being wherein provided with the illustrative embodiments according to present disclosure.
As illustrated in fig. 1, valve seat construction according to the illustrative embodiments of present disclosure comprises cylinder head 5, valve port 7 and valve seat 100.
Cylinder head 5 is arranged on the top of combustion chamber and forms the part of combustion chamber together with cylinder body. The sparking plug 30 of the mixed gas that cylinder head 5 is provided with in ignition combustion room. Cylinder head 5 comprises at least one valve port 7.
Valve port 7 can be formed as the shape that it is opened in the bottom of cylinder head 5. Air inlet or exhaust can pass valve port 7 and combustion chamber. The inside of valve port 7 is provided with valve (not shown). Valve can move back and forth, in suitably timing, the flowing controlling liquid or gas. Can by the to-and-fro movement opening and closing valve port 7 of valve. That is, when opening valve port 7, the mixture of air and fuel can be fed in combustion chamber or release waste gas from combustion chamber by valve, and is possible to prevent mixture or exhaust gas leakage when sealing valve port 7.
Owing to valve seals valve port 7, valve seat 100 can be used to keep gas-tight seal while contact valve. Valve seat 100 can be installed along the inner peripheral surface of valve port 7. The heat that valve seat 100 can run into the heat produced by the fuel lighted in combustion chamber or supply through contact valve. Therefore, the surface that valve seat 100 couples with valve port 7 at the surface ratio contacting valve, can have higher temperature.
Meanwhile, combustion chamber can have the temperature difference depending on position, and the cylinder head 5 covering combustion chamber can have the differing temps depending on position. In addition, the temperature of valve seat 100 also can be depending on position. Specifically, the temperature being positioned at the valve seat 100 near sparking plug 30 may be relatively higher than the temperature of other parts. With reference to Fig. 5 and Fig. 6, this phenomenon is described more in detail.
Fig. 5 is the front view of the common cylinder head being provided with valve seat and Fig. 6 is the temperature distributing curve diagram of the valve seat of Fig. 5.
As shown in fig. 6, the transverse axis of temperature distributing curve diagram 200 represents the distance of the center C from position B1, C1, D1 and E1 of valve seat to valve portion and its longitudinal axis represents the temperature of valve seat 100 corresponding to each position. According to temperature distributing curve diagram 200, the temperature of the valve seat 100 on straight line B1-C between the center 31 connecting sparking plug and the center C of valve port is the highest. In addition, with reference to the accompanying drawings, the temperature of the valve seat 100 being positioned on straight line C1-C and D1-C at the center 31 of sparking plug also compares high. In addition, be positioned at from sparking plug away from straight line E1-C on the temperature of valve seat 100 relatively low.
The valve seat construction of the illustrative embodiments according to present disclosure is included in the high hardness material portion 10 of the high hardness material of the part place formation standing the temperature higher than preset temperature of valve seat 100, to prevent the part thermal distortion of high temperature valve seat 100. As mentioned above, it is necessary, the relatively high part of the temperature of valve seat 100 is positioned on the straight line B1-C connecting the center of sparking plug 30 and the center C of valve port 7. Therefore, high hardness material portion 10 is preferably mounted to towards sparking plug 30.
The part except high hardness material portion 10 of valve seat 100 can be provided with the general material portion 20 of general hardened material.
Thus, only a part for valve seat 100 is made up of high hardness material, to reduce the composition ratio of high hardness material. In addition, it is possible to improve valve seat 100 thermal conductivity and can be cost-saving.
High hardness material portion 10 can be formed as the straight line based on the center 31 and C of passing sparking plug and present zygomorphy as axle.In addition, high hardness material portion 10 can form fan-shaped arc and the central angle X of fan-shaped arc is preferably the scope from 10 ° to 350 °, but is not limited to this.
Meanwhile, whole high hardness material portion 10 can be made up of a kind of material. In addition, the part only contacting high temperature valve can be made up of high hardness material, and therefore its cross section can be made up of bi-material. In addition, high hardness material portion 10 can be made up of a kind of high hardness material wherein infiltrating copper component. In addition, the part only contacting valve can be made up of high hardness material and its inside can be infiltrated and has copper component.
High hardness material portion 10 can comprise couplings 50. As illustrated in figs. 3 and 4, couplings 50 can be formed as having the shape for lugs of the upper ledge from high hardness material portion 10. In this case, cylinder head 4 can be provided with the flute profile installation portion 55 corresponding with couplings 50 and couplings 50 can be coupled by installation portion 55. Thus, couplings 50 can be arranged in installation portion 55, and therefore easily can assemble valve seat 100 on the direction of high hardness material portion 10 towards sparking plug 30.
Fig. 7 is the skeleton view of the valve seat of another illustrative embodiments according to present disclosure and Fig. 8 is the fragmentary, perspective view of the cylinder head of the valve seat being provided with another illustrative embodiments according to present disclosure.
Another illustrative embodiments according to present disclosure, as illustrated in figures 7 and 8, couplings 60 can have flute profile at the top place in high hardness material portion 10. When couplings 60 has flute profile, installation portion 65 has shape for lugs, and therefore can couple with couplings 60.
As mentioned above, it is necessary, according to the illustrative embodiments of present disclosure, only the standing a part higher than the preset temperature in part and can be made up of high hardness material of valve seat, thus the composition providing high hardness material is than valve seat little as far as possible. Therefore, in fact maintain valve seat wearing quality and can be cost-saving. In addition, the composition of high hardness material with low heat conductivity is than reducing, such that it is able to the thermal conductivity of improvement valve seat.
In addition, it is possible to prevent valve seat to be damaged due to temperature abnormality by the temperature distribution of lasting maintenance valve seat.
In addition, it is possible to the part at the valve seat being made up of high hardness material is formed installs groove and installs projection. As a result, valve seat can easily assemble cylinder head.
Although having combined the illustrative embodiments being regarded as practice at present to describe present disclosure, it should be understood that, present disclosure is not limited to disclosed enforcement mode. On the contrary, present disclosure is intended to contain various amendment included in the spirit and scope of the appended claims and equivalent arrangements.
Claims (11)
1. a valve seat construction, comprising:
Cylinder head, is arranged on the top of combustion chamber;
At least one valve port, is formed in the part place of described cylinder head, opens and closes by valve; And
Valve seat, the inner peripheral surface along described valve port is installed,
Wherein, a part for described valve seat is provided with the high hardness material portion being made up of high hardness material.
2. valve seat construction according to claim 1, wherein, described valve is vent valve.
3. valve seat construction according to claim 1, wherein, described valve is intake valve.
4. valve seat construction according to claim 1, wherein, described high hardness material portion is formed with fan-shaped arc and is placed to towards sparking plug.
5. valve seat construction according to claim 4, wherein, the scope of the central angle of described fan-shaped arc is from 10 ° to 350 °.
6. valve seat construction according to claim 5, wherein, described high hardness material portion is made up of a kind of material.
7. valve seat construction according to claim 5, wherein, described high hardness material portion is made up of at least one material comprising high hardness material and described high hardness material is formed in the part contacting described valve.
8. valve seat construction according to claim 5, wherein, described high hardness material portion has a kind of material of copper component to make by infiltration.
9. valve seat construction according to claim 5, wherein, described high hardness material portion is made up of at least one material comprising high hardness material, and described high hardness material be placed on described valve seat contact described valve inner side and the internal penetration of described high hardness material has copper component.
10. valve seat construction according to claim 1, wherein, described high hardness material portion comprises the couplings with shape for lugs,
The part that described cylinder head has is provided with the installation portion of the flute profile corresponding with described couplings, and described couplings and described installation portion are coupled to each other.
11. valve seat constructions according to claim 1, wherein, the part that described high hardness material portion has is provided with the couplings of flute profile,
The part that described cylinder head has is provided with the installation portion of the shape for lugs corresponding with described couplings, and described couplings and described installation portion are coupled to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0172873 | 2014-12-04 | ||
| KR1020140172873A KR101610166B1 (en) | 2014-12-04 | 2014-12-04 | Valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673119A true CN105673119A (en) | 2016-06-15 |
Family
ID=55917588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510725640.3A Pending CN105673119A (en) | 2014-12-04 | 2015-10-30 | Valve Seat Structure |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160160699A1 (en) |
| KR (1) | KR101610166B1 (en) |
| CN (1) | CN105673119A (en) |
| DE (1) | DE102015218883A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141026A (en) * | 1996-11-11 | 1998-05-26 | Nissan Motor Co Ltd | Valve seat, padding work method therefor, padding work device, and cylinder head for engine |
| JP2007056800A (en) * | 2005-08-25 | 2007-03-08 | Toyota Motor Corp | Valve train of internal combustion engine |
| CN203008984U (en) * | 2012-11-14 | 2013-06-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Valve retainer |
| CN103375217A (en) * | 2012-04-13 | 2013-10-30 | 通用汽车环球科技运作有限责任公司 | Valve seat insert |
| JP2014088793A (en) * | 2012-10-29 | 2014-05-15 | Mitsubishi Motors Corp | Valve seat and cylinder head |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2206952B (en) * | 1987-07-13 | 1991-02-13 | Heat Transfer Technology | Improvements relating to valve seats |
| DE10156196C1 (en) * | 2001-11-15 | 2003-01-02 | Daimler Chrysler Ag | Production of a valve seat used for a cylinder head of internal combustion engine comprises fusing an additive material made from an alloy or a mixture of an aluminum-lead alloy and a further component at a certain point on a cylinder head |
| KR20030048175A (en) * | 2001-12-11 | 2003-06-19 | 현대자동차주식회사 | Apparatus of valve seat for LPG engine |
-
2014
- 2014-12-04 KR KR1020140172873A patent/KR101610166B1/en active IP Right Grant
-
2015
- 2015-09-14 US US14/853,457 patent/US20160160699A1/en not_active Abandoned
- 2015-09-30 DE DE102015218883.3A patent/DE102015218883A1/en not_active Withdrawn
- 2015-10-30 CN CN201510725640.3A patent/CN105673119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141026A (en) * | 1996-11-11 | 1998-05-26 | Nissan Motor Co Ltd | Valve seat, padding work method therefor, padding work device, and cylinder head for engine |
| JP2007056800A (en) * | 2005-08-25 | 2007-03-08 | Toyota Motor Corp | Valve train of internal combustion engine |
| CN103375217A (en) * | 2012-04-13 | 2013-10-30 | 通用汽车环球科技运作有限责任公司 | Valve seat insert |
| JP2014088793A (en) * | 2012-10-29 | 2014-05-15 | Mitsubishi Motors Corp | Valve seat and cylinder head |
| CN203008984U (en) * | 2012-11-14 | 2013-06-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Valve retainer |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160160699A1 (en) | 2016-06-09 |
| KR101610166B1 (en) | 2016-04-20 |
| DE102015218883A1 (en) | 2016-06-09 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |