JPH03253708A - Valve guide for internal combustion engine - Google Patents
Valve guide for internal combustion engineInfo
- Publication number
- JPH03253708A JPH03253708A JP5397090A JP5397090A JPH03253708A JP H03253708 A JPH03253708 A JP H03253708A JP 5397090 A JP5397090 A JP 5397090A JP 5397090 A JP5397090 A JP 5397090A JP H03253708 A JPH03253708 A JP H03253708A
- Authority
- JP
- Japan
- Prior art keywords
- valve guide
- valve
- internal combustion
- combustion engine
- modulus
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000007747 plating Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は内燃機関用のノくルブガイドに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a knob guide for an internal combustion engine.
「従来の技術」
従来、内燃機関用のバルブガイドとしては、内径部を７
＜ルプが摺動するため耐磨耗性の観点から鋳鉄ｉいしは
鉄系焼結合金が用いられていた。``Prior art'' Conventionally, valve guides for internal combustion engines have an inner diameter of 7 mm.
<Because the loops slide, cast iron or iron-based sintered alloys have been used from the viewpoint of wear resistance.
「発明が解決しようとする課題」
最近、自動車の燃費向上を目的としてボディを始め、内
燃機関についても軽量化の要求が高１っており、このた
め使用される部品についても鉄からアルミニウム合金へ
の代替のニーズが強くなっている。``Problems to be solved by inventions'' Recently, there has been a high demand for lighter bodies and internal combustion engines in order to improve the fuel efficiency of automobiles, and for this reason, the parts used have also changed from iron to aluminum alloys. There is a strong need for alternatives.
しかしながら、バルブガイドは、バルブを保持する役割
と共にバルブが摺動するため優れた耐磨耗性が要求され
るため、従来のアルミニウム合金合金ではバルブが摺動
する内径部がへたりを生じ、耐磨耗性の点でも要求特性
を満足しないという問題があった。However, since the valve guide plays the role of holding the valve and the valve slides on it, excellent wear resistance is required, so with conventional aluminum alloys, the inner diameter part where the valve slides tends to wear out, making it resistant to wear. There was also the problem that the required properties were not satisfied in terms of abrasion resistance.
上記に鑑み、本発明はこのような問題点を解消するため
開発されたものである。In view of the above, the present invention has been developed to solve these problems.
「課題を解決するための手段」
即ち本発明は、ヤング率９０００ Ｋｇｆ／１ｒａｎ２
以上、硬さがロツククエルＢスクールで５０以上を有す
るアルミニウム合金から戊ることを特徴とする特許機関
用バルブガイドである。"Means for Solving the Problem" That is, the present invention has a Young's modulus of 9000 Kgf/1ran2
The above is a patent engine valve guide characterized by being made of an aluminum alloy having a hardness of 50 or more on the RockQuel B school.
なか本発明はその実施の態様として少なくとも下記が含
１れる。Among the embodiments of the present invention, at least the following are included.
■ 少なくともパルプが摺動する内径表層部にめっき処
理を施した上記本発明の内燃機関用パルプガイ ド。(2) The pulp guide for an internal combustion engine according to the present invention, wherein at least the inner diameter surface layer on which the pulp slides is plated.
＠ 合金組成のうち少なくともＳｉを重量比で１５〜４
０％含む上記本発明の、又は上記■の発明の内燃機関用
バルブガイド。@ At least Si in the alloy composition in a weight ratio of 15 to 4
The valve guide for an internal combustion engine according to the present invention or the invention according to (2) above, containing 0%.
以下に本発明の詳細な説明する。The present invention will be explained in detail below.
急冷凝固法によって作られたアルミニウム合金粉末を原
料とする粉末冶金法によれば、従来の鋳造アルミニウム
合金では得られなかった合金組成が得られることに着目
し、Ｓｉを１５ｔｆＤ以上更にＦｅ。Focusing on the fact that an alloy composition that could not be obtained with conventional cast aluminum alloys can be obtained by a powder metallurgy method using aluminum alloy powder made by a rapid solidification method as a raw material, Si was added to 15 tfD or more and Fe was added.
Ｎｉ等のマトリックス強化元素を適切に選んだ高合金組
成のアルミニウム粉末をＣＩＰ、熱間押出加工あるいは
熱間鍛造等のプロセスにより、密度比９５％以上の高密
度アルミニウム合金を素桐としてヤング率９０００以上
、硬さがＨＲＢ５０以上有することが出来ればバルブガ
イドとしての機能を満足することを見出したものである
。Aluminum powder with a high alloy composition in which matrix reinforcing elements such as Ni are appropriately selected is processed by processes such as CIP, hot extrusion, or hot forging, and a high-density aluminum alloy with a density ratio of 95% or more is made into paulownia and has a Young's modulus of 9000. As described above, it has been found that if the hardness can be HRB50 or more, the function as a valve guide is satisfied.
「作用」
ノくルプガイドの内径部を上下に摺動するパルプはパル
プ自身回転しｈがら上下運動をしているが、必ずしも軸
に沿った動きだけでなく、多少の芯ぶれを生じながらバ
ルブガイド内を摺動するためバルブガイドに対して圧縮
応力が働く。このためヤング率が９０００未満であると
バルブガイドにへたりが生じるという問題が生じる。従
ってヤング率が９０００以上が必要である。``Function'' The pulp that slides up and down on the inner diameter of the valve guide moves up and down as the pulp itself rotates, but it does not necessarily move along the axis, but also moves along the valve guide with some core deviation. Compressive stress is applied to the valve guide as it slides inside the valve guide. Therefore, if the Young's modulus is less than 9000, a problem arises in that the valve guide becomes sagging. Therefore, a Young's modulus of 9000 or more is required.
硬さが、ＨＲＢ５０未満だと耐磨耗性が不十分である。If the hardness is less than HRB50, the abrasion resistance will be insufficient.
従ってバルブガイドとしては硬さがＨＲＢ６０以上が必
要である。Therefore, the hardness of the valve guide must be HRB60 or higher.
Ｓｉは硬さの増加、ヤング率の増加に有効な合金添加元
素であるが、Ｓｉが１５％未満ではＦｅ、Ｎｉ等の他の
合金元素を添加してもヤング率９０００以上を遠戚する
ことは困難である。従ってその下限を１５％とした。一
方４０％を超えると材料自体がもろくなるという問題が
ある。従ってバルブガイドとして使用されるためには１
５〜４０％が望１（３）
（４）
しい。Si is an alloy additive element that is effective in increasing hardness and Young's modulus, but if Si is less than 15%, even if other alloying elements such as Fe and Ni are added, the Young's modulus will not exceed 9000. It is difficult. Therefore, the lower limit was set at 15%. On the other hand, if it exceeds 40%, there is a problem that the material itself becomes brittle. Therefore, in order to be used as a valve guide, 1
5 to 40% is desirable.
その他、合金添加元素としてＦｅ、Ｎｉ 、Ｚｎ 、Ｍ
ｏ 。Other alloy additive elements include Fe, Ni, Zn, and M.
o.
Ｃｒ等もマトリックの強度、ヤング率、硬さの増加に有
効であり、これらのうちいずれか１種ないし２種以上を
添加することにより効果が大きくなる。Cr and the like are also effective in increasing the strength, Young's modulus, and hardness of the matrix, and the effect becomes greater by adding one or more of these.
次に内径部にめっきを施こす場合であるが、パルプの材
質が５ＵＨ３種等の鋼材から成る場合には必ずしも必要
でないが、パルプ材質がアルミニウム合金等に々った場
合にはパルプとガイドの間で焼付きが生じるという問題
がある。この対策としてノくルブガイドにＮ１−Ｐめつ
き等耐磨耗性を改善するめっきを施こすことが有効であ
る。Next, plating the inner diameter part is not necessary if the pulp material is made of steel such as 5UH3, but if the pulp material is aluminum alloy etc. There is a problem that burn-in occurs between the two. As a countermeasure to this problem, it is effective to apply plating, such as N1-P plating, to the knob guide to improve wear resistance.
「実施例」 以下に本発明の実施例を述べる。"Example" Examples of the present invention will be described below.
１０３℃／ｓｅｃの冷却条件でエアアトマイズ法により
第１表組成のＡ７合金粉末を作った。A7 alloy powder having the composition shown in Table 1 was produced by air atomization under cooling conditions of 103° C./sec.
第 １ 表
この粉末を原料としてＣＩＰ法により＄１５５＋ｍｎの
ビレットを作威し、４５０℃に加熱して押出しプレスに
より０２０＋＋＋＋ｎの棒状の押出材を作成し、これを
切断釦よび加工によって所定形状のバルブガイドを作成
した。Table 1 Using this powder as a raw material, a billet of $155+mn was made by the CIP method, heated to 450°C, and extrusion pressed to make a rod-shaped extruded material of 020+++n, which was then cut into a valve of a predetermined shape by cutting and processing. Created a guide.
尚Ａについては加工前にＴｂ処理を施した。Regarding A, Tb treatment was performed before processing.
以−１３種のバルブガイドを第１図に示す試験機を用い
てバルブガイドの磨耗試験を行った。試験は常温でカム
の回転数２５０Ｏｒｐｍ、 ２０Ｈの条件で行った。な
釦相手材のパルプは５ＵＨ３を使用した。Valve guide wear tests were conducted on the following 13 types of valve guides using the testing machine shown in FIG. The test was conducted at room temperature, cam rotation speed of 250 rpm, and 20 hours. 5UH3 pulp was used for the button mating material.
尚、試験にあたっては比較のためＡＣ８ＡのＴｂ材を用
いた。これらの特性を第２表に示す。In the test, AC8A Tb material was used for comparison. These properties are shown in Table 2.
第 ２ 表 試Ｍの評価は／くルブガイドの内径変化で示した。Table 2 The evaluation of test M was shown by the change in the inner diameter of the club guide.
その結果を第３表に示す。寸法測定はバルブガイドの全
長方向の中央部で行った。The results are shown in Table 3. The dimensions were measured at the center of the valve guide in the overall length direction.
（５）・・・カムシャツ
（６）・・・カム
以上の結果より明らかなように本発明材は磨耗量が少な
く良好な結果を示した。(5) Cam shirt (6) Cam As is clear from the results above, the material of the present invention showed good results with less wear.
「発明の効果」
以上の様な本発明によれば、アルミニウム合金にもかか
わらず優れた耐磨耗性を有し、エンジンの軽量化に有効
である。"Effects of the Invention" According to the present invention as described above, despite being an aluminum alloy, it has excellent wear resistance and is effective in reducing the weight of the engine.
第１図は本発明の実施例に於けるバルブガイドの磨耗試
験機を説明する図である。FIG. 1 is a diagram illustrating a valve guide wear tester in an embodiment of the present invention.
Claims (1)
ロックウェルＢスケールで５０以上を有するアルミニウ
ム合金から構成されることを特徴とする内燃機関用バル
ブガイド。（２）少なくともバルブが摺動する内径表層
部にめっき処理を施した請求項（１）記載の内燃機関用
バルブガイド。 （３）合金組成のうち少なくともＳｉを重量比で１５〜
４０％含む請求項（１）又は（２）記載の内燃機関用バ
ルブガイド。Claims: (1) A valve guide for an internal combustion engine, characterized in that it is made of an aluminum alloy having a Young's modulus of 9000 Kgf/mm^2 or more and a hardness of 50 or more on the Rockwell B scale. (2) The valve guide for an internal combustion engine according to claim 1, wherein at least a surface layer of the inner diameter on which the valve slides is plated. (3) At least Si in the alloy composition is 15 to 15% by weight
The valve guide for an internal combustion engine according to claim 1 or 2, wherein the valve guide contains 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5397090A JPH03253708A (en) | 1990-03-05 | 1990-03-05 | Valve guide for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5397090A JPH03253708A (en) | 1990-03-05 | 1990-03-05 | Valve guide for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03253708A true JPH03253708A (en) | 1991-11-12 |
Family
ID=12957514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5397090A Pending JPH03253708A (en) | 1990-03-05 | 1990-03-05 | Valve guide for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03253708A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005061151A1 (en) * | 2003-12-22 | 2007-07-12 | 本田技研工業株式会社 | Member molding method, valve guide and molding method thereof, and cylindrical member molding method |
| CN106979858A (en) * | 2017-04-17 | 2017-07-25 | 浙江新柴股份有限公司 | A kind of endurance quality experimental provision of cam shaft for diesel engine |
-
1990
- 1990-03-05 JP JP5397090A patent/JPH03253708A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005061151A1 (en) * | 2003-12-22 | 2007-07-12 | 本田技研工業株式会社 | Member molding method, valve guide and molding method thereof, and cylindrical member molding method |
| JP4566132B2 (en) * | 2003-12-22 | 2010-10-20 | 本田技研工業株式会社 | Method for forming cylindrical member |
| CN106979858A (en) * | 2017-04-17 | 2017-07-25 | 浙江新柴股份有限公司 | A kind of endurance quality experimental provision of cam shaft for diesel engine |
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