CN102748086A - Mounting structure and mounting method of air valve seat ring - Google Patents
Mounting structure and mounting method of air valve seat ring Download PDFInfo
- Publication number
- CN102748086A CN102748086A CN2011101011762A CN201110101176A CN102748086A CN 102748086 A CN102748086 A CN 102748086A CN 2011101011762 A CN2011101011762 A CN 2011101011762A CN 201110101176 A CN201110101176 A CN 201110101176A CN 102748086 A CN102748086 A CN 102748086A
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- China
- Prior art keywords
- valve seat
- seat ring
- air valve
- cylinder head
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a mounting structure of an air valve seat ring, which is characterized by comprising an air cylinder cover, an air channel arranged in the air cylinder cover, and a pre-cast air valve seat ring which is pre-arranged at a jointing part of the air channel and an engine combustion room, wherein the air valve seat ring is made of a metal material and is commonly manufactured by a power metallurgy process.
Description
Technical field
The present invention relates to a kind of air valve seat ring mounting structure and installation method, relate in particular to the air valve seat ring mounting structure and the installation method that cooperate with internal-combustion engine/engine valve.
Background technique
In the existing technology, the structure that the cylinder head A of common internal-combustion engine/motor and air valve seat ring cooperate is as shown in Figure 1: air flue 12 and engine chamber junction point (air outlet) at cylinder head A are processed, and form step-like air valve seat ring hole 11.And, as shown in Figure 2, in above-mentioned air valve seat ring hole 11, be pressed into air valve seat ring 13.
Air valve seat ring 13 plays considerable function in the internal combustion engine process---and sealed air valve and the heat that transmits valve, the heat of valve is from mixture combustion in the engine cylinder.If the heat of valve can not in time obtain transmitting and discharging, the potential valve that causes to be ablated, motor is badly damaged, influences work.At this, the efficient that air valve seat ring 13 transmits the valve heats depends on the quality of fit between the air valve seat ring hole 11 of air valve seat ring 13 and cylinder head A to a great extent.Quality of fit is high, posts then heat transfer efficiency height.
Yet there is following defective in above-mentioned cooperating structure:
1) requirement on machining accuracy of the fitting surface of air valve seat ring hole 11 and air valve seat ring 13 is high, and promptly shape and the surface roughness to air valve seat ring hole 11 and air valve seat ring 13 fitting surfaces all has higher requirement.If machining accuracy is undesirable, then possibly reduce heat transfer efficiency because of fitting surface applying degree difference.But higher processing precision must be purchased high-precision processing and detection facility, so that cost of production improves.
2) mach air valve seat ring hole 11 and air valve seat ring 13 must have characteristics such as chamfering as shown in Figure 3 or rounding 14.But in fact characteristics such as chamfering or rounding 14 have reduced the fitting area between air valve seat ring hole 11 and the air valve seat ring 13.Cause heat transfer efficiency to reduce, be unfavorable for the valve heat radiation.
Summary of the invention
The object of the present invention is to provide a kind of air valve seat ring of internal-combustion engine/motor and the cooperating structure and installation method of cylinder-head port of being used for; Can reduce production costs greatly; Improve heat transfer efficiency between air valve seat ring hole and the air valve seat ring simultaneously, more help the valve heat radiation.
Air valve seat ring mounting structure of the present invention comprises: cylinder head; Be arranged on the air flue in the cylinder head; And the precasting air valve seat ring that is provided with in advance at said air flue and engine chamber junction point.
According to said structure, owing to air valve seat ring is set in advance, therefore can omit the course of working in air valve seat ring hole at said air flue and engine chamber junction point, make the shape of air valve seat ring fitting surface and the requirement of surface roughness reduce.Simultaneously, because air valve seat ring and cylinder head can fit fully, and eliminated the gap that chamfering or rounded feature produce, so can increase area of heat transfer.
Air valve seat ring installation method of the present invention may further comprise the steps: before cylinder head casting, the blank part of air valve seat ring is fixed on the position of hoping to be provided with air valve seat ring in the air flue of cylinder head; When cylinder head is cast, molten metal liquid be filled in air valve seat ring the blank part around; After accomplishing casting, molten metal cools off gradually, and the blank part of air valve seat ring is fused together with it, thereby with air flue and the engine chamber junction point of air valve seat ring precasting at cylinder cap.
Through said method, owing to air valve seat ring 1 is set in advance, therefore can omit the course of working in air valve seat ring hole at air flue 12 and engine chamber junction point, make the shape of air valve seat ring fitting surface and the requirement of surface roughness reduce.Simultaneously, as shown in Figure 4, owing to air valve seat ring 1 can be fitted with cylinder head A fully, and eliminated the gap of chamfering or rounded feature generation, therefore can increase area of heat transfer.
Description of drawings
Fig. 1 is the cylinder head of expression existing technology and the sectional view in air valve seat ring hole.
Fig. 2 is the cylinder head of expression existing technology and the sectional view of air valve seat ring.
Fig. 3 is chamfering or the figure of rounding in the cooperating structure of cylinder head and air valve seat ring of expression existing technology; (a) be the sectional view of cylinder head and air valve seat ring; (b) be the enlarged view that square frame encloses part in (a).
Fig. 4 is the cooperating structure of cylinder head and the air valve seat ring of expression embodiment of the present invention
Figure; (a) be the sectional view of cylinder head and air valve seat ring; (b) be the enlarged view that square frame encloses part in (a).
(symbol description)
The A cylinder head
11 air valve seat ring holes
12 air flues
13 air valve seat rings
14 chamferings (rounding)
1 precasting air valve seat ring
Embodiment
Following specific embodiments of the invention elaborates.Following mode of execution only is an example of technological scheme of the present invention, should not be interpreted as the qualification to protection domain of the present invention.
The air valve seat ring mounting structure
Existing internal-combustion engine/engine pack mainly comprises engine body, cylinder head and valve.Cylinder head is fixed in engine body, has air flue 12.
As shown in Figure 1, the structure that the cylinder head A of internal-combustion engine/engine pack and air valve seat ring cooperate is: air flue 12 and engine chamber junction point (air outlet) at cylinder head A are processed, and form step-like air valve seat ring hole 11.
Therefore, the air valve seat ring mounting structure of this mode of execution is as shown in Figure 4, comprising: cylinder head A; Be arranged on the air flue 12 in the cylinder head A; And the precasting air valve seat ring 1 that is provided with in advance at air flue 12 and engine chamber junction point.
According to said structure, owing to air valve seat ring 1 is set in advance, therefore can omit the course of working in air valve seat ring hole at air flue 12 and engine chamber junction point, make the shape of air valve seat ring fitting surface and the requirement of surface roughness reduce.Simultaneously, as shown in Figure 4, because air valve seat ring 1 can be fitted with cylinder head A fully (details can contrast Fig. 3 (b) of existing technology and Fig. 4 (b) of this mode of execution), and therefore the gap of having eliminated chamfering or rounded feature generation can increase area of heat transfer.
The air valve seat ring installation method
Below, the air valve seat ring installation method of this mode of execution is described.
In this mode of execution, come simplified manufacturing technique, improve heat transfer efficiency simultaneously through the air valve seat ring that air valve seat ring 1 is set at air flue 12 and engine chamber junction point in advance.In this mode of execution, adopt the method for casting that air valve seat ring 1 is set.
Before cylinder head A casting, at first the blank part of air valve seat ring 1 is fixed on the core of air flue 12 of cylinder head A, its fixed position can be confirmed according to the position of the air valve seat ring 1 of hope; When cylinder head is cast, high-temperature liquid metal (like aluminium liquid) can be filled in air valve seat ring 1 the blank part around; After accomplishing casting, cylinder head A cools off gradually, in the process of molten metal cooling, fuse together with the blank part of air valve seat ring 1, thereby with air flue and the engine chamber junction point of air valve seat ring precasting at cylinder cap.Thus, can reach the purpose of air valve seat ring 1 precasting to the gas port of cylinder head A.
Through said method, owing to air valve seat ring 1 is set in advance, therefore can omit the course of working in air valve seat ring hole at air flue 12 and engine chamber junction point, make the shape of air valve seat ring fitting surface and the requirement of surface roughness reduce.Simultaneously, as shown in Figure 4, because air valve seat ring 1 can be fitted with cylinder head A fully (details can contrast Fig. 3 (b) of existing technology and Fig. 4 (b) of this mode of execution), and therefore the gap of having eliminated chamfering or rounded feature generation can increase area of heat transfer.
Above-mentioned mode of execution should not be interpreted as qualification of the present invention, and change in the reasonable scope should all be allowed to.
Claims (3)
1. an air valve seat ring mounting structure is characterized in that, comprising: cylinder head;
Be arranged on the air flue in the cylinder head; And
The precasting air valve seat ring that is provided with in advance at said air flue and engine chamber junction point.
2. an air valve seat ring installation method is characterized in that, may further comprise the steps: before cylinder head casting, the blank part of air valve seat ring is fixed on the position of hoping to be provided with air valve seat ring in the air flue of cylinder head;
When cylinder head is cast, the high-temperature liquid metal of fusing be filled in air valve seat ring the blank part around;
After accomplishing casting, molten metal cools off gradually, and the blank part of air valve seat ring is fused together with it, thereby with air flue and the engine chamber junction point of air valve seat ring precasting at cylinder cap.
3. a cylinder head is characterized in that, comprising:
Air flue; And
The precasting air valve seat ring that is provided with in advance at said air flue and engine chamber junction point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101011762A CN102748086A (en) | 2011-04-21 | 2011-04-21 | Mounting structure and mounting method of air valve seat ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101011762A CN102748086A (en) | 2011-04-21 | 2011-04-21 | Mounting structure and mounting method of air valve seat ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748086A true CN102748086A (en) | 2012-10-24 |
Family
ID=47028537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101011762A Pending CN102748086A (en) | 2011-04-21 | 2011-04-21 | Mounting structure and mounting method of air valve seat ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748086A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114137A1 (en) * | 2015-12-29 | 2017-07-06 | 重庆志成机械有限公司 | Valve seat structure for cylinder head of motorcycle engine |
| CN110425050A (en) * | 2019-07-26 | 2019-11-08 | 中国第一汽车股份有限公司 | A kind of cylinder head assembly moulding process and cylinder head |
| CN112112729A (en) * | 2020-08-28 | 2020-12-22 | 江苏大学 | Variable air inlet tumble flow device of direct injection engine in dual-fuel cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19612500A1 (en) * | 1996-03-29 | 1997-10-02 | Bleistahl Prod Gmbh & Co Kg | Process for the production of cylinder heads for internal combustion engines |
| KR20030018870A (en) * | 2001-08-31 | 2003-03-06 | 현대자동차주식회사 | Cast in valve seat ring manufacturing method of cylinder head |
| JP2009012073A (en) * | 2007-06-30 | 2009-01-22 | Dr Ing H C F Porsche Ag | Method for casting cooling channel in cylinder head of internal combustion engine |
| CN201851223U (en) * | 2010-10-16 | 2011-06-01 | 常州亚美柯机械设备有限公司 | Cylinder cover of diesel engine |
| CN102198520A (en) * | 2011-04-08 | 2011-09-28 | 郑州市钻石精密制造有限公司 | Cutting blade for machining valve seat conical surface |
-
2011
- 2011-04-21 CN CN2011101011762A patent/CN102748086A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19612500A1 (en) * | 1996-03-29 | 1997-10-02 | Bleistahl Prod Gmbh & Co Kg | Process for the production of cylinder heads for internal combustion engines |
| KR20030018870A (en) * | 2001-08-31 | 2003-03-06 | 현대자동차주식회사 | Cast in valve seat ring manufacturing method of cylinder head |
| JP2009012073A (en) * | 2007-06-30 | 2009-01-22 | Dr Ing H C F Porsche Ag | Method for casting cooling channel in cylinder head of internal combustion engine |
| CN201851223U (en) * | 2010-10-16 | 2011-06-01 | 常州亚美柯机械设备有限公司 | Cylinder cover of diesel engine |
| CN102198520A (en) * | 2011-04-08 | 2011-09-28 | 郑州市钻石精密制造有限公司 | Cutting blade for machining valve seat conical surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114137A1 (en) * | 2015-12-29 | 2017-07-06 | 重庆志成机械有限公司 | Valve seat structure for cylinder head of motorcycle engine |
| CN110425050A (en) * | 2019-07-26 | 2019-11-08 | 中国第一汽车股份有限公司 | A kind of cylinder head assembly moulding process and cylinder head |
| CN112112729A (en) * | 2020-08-28 | 2020-12-22 | 江苏大学 | Variable air inlet tumble flow device of direct injection engine in dual-fuel cylinder |
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Application publication date: 20121024 |