CN108412571A - A kind of new-type valve guide bushing structure - Google Patents
A kind of new-type valve guide bushing structure Download PDFInfo
- Publication number
- CN108412571A CN108412571A CN201810180145.2A CN201810180145A CN108412571A CN 108412571 A CN108412571 A CN 108412571A CN 201810180145 A CN201810180145 A CN 201810180145A CN 108412571 A CN108412571 A CN 108412571A
- Authority
- CN
- China
- Prior art keywords
- guide bushing
- valve guide
- assembly
- ontology
- seam allowance
- 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
- 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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of new-type valve guide bushing structures, including valve guide bushing ontology, it is guide hole among the valve guide bushing ontology, assembly seam allowance is equipped in the middle part of the valve guide bushing outer body, valve guide bushing outer body on the upside of the assembly seam allowance is circumferentially with multiple ladder boss, and the assembly stop portion is circumferentially provided inwardly with groove.Advantageous effect of the present invention：Suitable for compact-sized cylinder head, and there is higher reliability, extends to other high power density engine cylinder head.
Description
Technical field
The invention belongs to valve guide bushing technical fields, more particularly, to a kind of new-type valve guide bushing structure.
Background technology
Guide cylinder of the valve guide bushing as valve reciprocation ensures valve and valve for controlling valve motion direction
Sealing between seat, while conductive force is played in the surface of valve guide bushing with valve contacts, and the partial heat of valve is shed.Gas
Door conduit usually works under the conditions of semi-dry friction, bears lateral pressure caused by cam action forces, and operating temperature is higher, therefore easily
Abrasion and fracture.Currently, the material of conventional engine valve conduit includes cast iron, powder metallurgy, copper etc., elastic conjunction is in cylinder cap
On, overall length is generally 6~8 times of valve shank diameter, valve guide bushing elastic conjunction length account for valve guide bushing overall length 60%~
80%, the height that valve guide bushing protrudes assembly seam allowance accounts for the 15%~25% of valve guide bushing overall length, can meet valve and steadily may be used
The work requirements leaned on.
With the promotion of engine power density, air cylinder head structure becomes more compact, and cylinder head height reduces, to substantially
Reduce the assembly length of valve guide bushing.To ensure the normal steady reliable reciprocating motion of valve, valve guide bushing length is constant, gas
The ratio that door conduit assembly length accounts for conduit overall length reduces, and the height of valve guide bushing protrusion assembly seam allowance accounts for the ratio of conduit overall length
It increases, to which the lateral force torque of valve guide bushing carrying greatly increases, easily leads to valve guide bushing and impacted by the swing of valve, in gas
Fracture failure occurs for door conduit assembly stop portion.
Invention content
In view of this, the present invention is directed to propose a kind of new-type valve guide bushing structure, with the shortcoming to solve the above problems.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of new-type valve guide bushing structure, including valve guide bushing ontology, the valve guide bushing ontology centre is guide hole, institute
It states and is equipped with assembly seam allowance in the middle part of valve guide bushing outer body, the valve guide bushing outer body on the upside of the assembly seam allowance is circumferentially with
Multiple ladder boss, the assembly stop portion are circumferentially provided inwardly with groove.
Further, the size of the assembly axial gap formed between the groove and assembly seam allowance is 0.25mm.
Further, the elastic conjunction length of the valve guide bushing ontology accounts for the 40% of valve guide bushing ontology total length.
Further, the height of the valve guide bushing ontology protrusion assembly seam allowance accounts for valve guide bushing ontology total length
40%.
Further, the quantity of the ladder boss is two.
Compared with the existing technology, new-type valve guide bushing structure of the present invention has the advantage that：
(1) new-type valve guide bushing structure of the present invention be suitable for compact-sized cylinder head, and with it is higher can
By property, other high power density engine cylinder head are extended to.
(2) valve guide bushing ontology elastic conjunction length of the present invention accounts for the 40% of valve guide bushing ontology overall length, valve
Catheter body protrudes assembly seam allowance height and accounts for the 40% of valve guide bushing ontology overall length, is adapted to greater compactness of air cylinder head structure；
By the way that two ladder boss are arranged, the bending stiffness that valve guide bushing ontology protrudes assembly seam allowance part is effectively enhanced；Valve is led
The groove that tube body assembly seam allowance lower part is radially arranged can unload valve guide bushing ontology assembly concentrated stress, while reduce gas
The fretting wear of door catheter body assembly stop portion；Valve guide bushing ontology and cylinder cap axially should ensure that certain dress in assembly seam allowance
With gap, the thermal deformation of valve guide bushing ontology and cylinder cap assembly seam allowance contact surface can be discharged, and valve guide bushing ontology is inhibited to exist
Assemble the fretting wear of stop portion.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the new-type valve guide bushing structural schematic diagram described in the embodiment of the present invention；
Fig. 2 is R part enlarged drawing in Fig. 1.
Reference sign：
1- valve guide bushing ontologies；2- ladder boss；3- assembles seam allowance；4- cylinder caps；5- guide holes；6- grooves；7- assembled shafts
To gap.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As depicted in figs. 1 and 2, a kind of new-type valve guide bushing structure, including valve guide bushing ontology 1, the valve guide bushing sheet
It is guide hole 5 among body 1,1 outer middle side part of the valve guide bushing ontology is equipped with assembly seam allowance 3, the gas of 3 upside of assembly seam allowance
Door 1 external circumferential of catheter body is equipped with multiple ladder boss 2, and groove 6 is circumferentially provided inwardly at the assembly seam allowance 3.
The size of the assembly axial gap 7 formed between the groove 6 and assembly seam allowance 3 is 0.25mm.
The elastic conjunction length of the valve guide bushing ontology 1 accounts for the 40% of 1 total length of valve guide bushing ontology.
The height that the valve guide bushing ontology 1 protrudes assembly seam allowance 3 accounts for the 40% of 1 total length of valve guide bushing ontology.
The quantity of the ladder boss 2 is two.
Valve does oscillating traverse motion in guide hole 5, and 1 total length of valve guide bushing ontology is designed as 6 times of valve diameter,
Meet valve and is oriented to requirement.It is smaller that 1 elastic conjunction length B of valve guide bushing ontology accounts for 1 total length L ratio of valve guide bushing ontology, can
To adapt to more compact high power density engine air cylinder head structure.Valve guide bushing ontology 1 protrudes assembly seam allowance height A and accounts for valve
The large percentage of 1 total length L of catheter body, the lateral force torque that valve guide bushing ontology 1 carries during the work time is also larger, easily
It causes valve guide bushing ontology 1 to be bent and be broken, by the way that two ladder boss 2 are arranged, effectively enhances the protrusion of valve guide bushing ontology 1
Assemble the bending stiffness of seam allowance part；Valve guide bushing ontology 1 assembles the groove 6 that seam allowance lower part is radially arranged, and can unload valve
Catheter body 1 assembles concentrated stress, while reducing the fretting wear that valve guide bushing ontology 1 assembles stop portion；Valve guide bushing ontology 1
Certain fit-up gap is axially should ensure that in assembly seam allowance, can discharge valve guide bushing ontology 1 and the assembly of cylinder cap 4 stops with cylinder cap 4
The thermal deformation of mouth contact surface, and inhibit fretting wear of the valve guide bushing ontology 1 at assembly seam allowance 3.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of new-type valve guide bushing structure, it is characterised in that：Including valve guide bushing ontology, it is among the valve guide bushing ontology
Guide hole, the valve guide bushing outer body middle part are equipped with assembly seam allowance, and the valve guide bushing sheet on the upside of the assembly seam allowance is external
Side is circumferentially with multiple ladder boss, and the assembly stop portion is circumferentially provided inwardly with groove.
2. a kind of new-type valve guide bushing structure according to claim 1, it is characterised in that：The groove and assembly seam allowance it
Between the size of assembly axial gap that is formed be 0.25mm.
3. a kind of new-type valve guide bushing structure according to claim 1, it is characterised in that：The mistake of the valve guide bushing ontology
The assembly length that is full of accounts for the 40% of valve guide bushing ontology total length.
4. a kind of new-type valve guide bushing structure according to claim 1, it is characterised in that：The valve guide bushing ontology protrudes
The height of assembly seam allowance accounts for the 40% of valve guide bushing ontology total length.
5. a kind of new-type valve guide bushing structure according to claim 1, it is characterised in that：The quantity of the ladder boss is
Two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180145.2A CN108412571A (en) | 2018-03-05 | 2018-03-05 | A kind of new-type valve guide bushing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180145.2A CN108412571A (en) | 2018-03-05 | 2018-03-05 | A kind of new-type valve guide bushing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108412571A true CN108412571A (en) | 2018-08-17 |
Family
ID=63130156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810180145.2A Pending CN108412571A (en) | 2018-03-05 | 2018-03-05 | A kind of new-type valve guide bushing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108412571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456864A (en) * | 2019-01-22 | 2020-07-28 | 长城汽车股份有限公司 | A cylinder head subassembly and vehicle for vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1181933A (en) * | 1997-09-11 | 1999-03-26 | Nissan Diesel Motor Co Ltd | Valve guide |
| CN2484408Y (en) * | 2001-06-14 | 2002-04-03 | 侯言有 | Air-valve assembly of diesel engine |
| CN201103430Y (en) * | 2007-08-28 | 2008-08-20 | 力帆实业(集团)股份有限公司 | Air valve lever and air valve conduit component |
| CN202544951U (en) * | 2012-04-23 | 2012-11-21 | 成都天回气门导管制造有限公司 | Air valve guide pipe for ship |
| CN203717061U (en) * | 2013-12-21 | 2014-07-16 | 潍柴动力股份有限公司 | Air valve guide pipe |
| CN204436503U (en) * | 2015-01-26 | 2015-07-01 | 潍柴西港新能源动力有限公司 | Valve guide bushing used for natural gas engine |
-
2018
- 2018-03-05 CN CN201810180145.2A patent/CN108412571A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1181933A (en) * | 1997-09-11 | 1999-03-26 | Nissan Diesel Motor Co Ltd | Valve guide |
| CN2484408Y (en) * | 2001-06-14 | 2002-04-03 | 侯言有 | Air-valve assembly of diesel engine |
| CN201103430Y (en) * | 2007-08-28 | 2008-08-20 | 力帆实业(集团)股份有限公司 | Air valve lever and air valve conduit component |
| CN202544951U (en) * | 2012-04-23 | 2012-11-21 | 成都天回气门导管制造有限公司 | Air valve guide pipe for ship |
| CN203717061U (en) * | 2013-12-21 | 2014-07-16 | 潍柴动力股份有限公司 | Air valve guide pipe |
| CN204436503U (en) * | 2015-01-26 | 2015-07-01 | 潍柴西港新能源动力有限公司 | Valve guide bushing used for natural gas engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456864A (en) * | 2019-01-22 | 2020-07-28 | 长城汽车股份有限公司 | A cylinder head subassembly and vehicle for vehicle |
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| 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 |
Application publication date: 20180817 |
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| RJ01 | Rejection of invention patent application after publication |