JPH0629443Y2 - Engine valve - Google Patents
Engine valveInfo
- Publication number
- JPH0629443Y2 JPH0629443Y2 JP1988164367U JP16436788U JPH0629443Y2 JP H0629443 Y2 JPH0629443 Y2 JP H0629443Y2 JP 1988164367 U JP1988164367 U JP 1988164367U JP 16436788 U JP16436788 U JP 16436788U JP H0629443 Y2 JPH0629443 Y2 JP H0629443Y2
- Authority
- JP
- Japan
- Prior art keywords
- umbrella
- engine valve
- engine
- weight
- shaft
- 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.)
- Expired - Lifetime
Links
Landscapes
- Lift Valve (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、内燃機関に使用するエンジンバルブに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an engine valve used in an internal combustion engine.
従来、内燃機関に使用するエンジンバルブは一般に軸部
および傘部とも中実のものが使用されているが、傘部は
軸部に対して重いのでバランスが悪く軽快な作動が得ら
れにくく、特にエンジンの高速高出力化の要求に対して
傘の慣性から生ずる弊害が問題となっている。その対応
策として第２図に示すごとく、傘１の表面に凹み１ｂを
設けて傘部の軽量化を計っているが、傘表面はエンジン
の燃焼室の一部を形成している関係上、燃焼効率、圧縮
比等の関係から自然と形状が規制されるので傘部の十分
な軽量化を得ることは困難である。Conventionally, the engine valve used for an internal combustion engine is generally a solid one for both the shaft portion and the umbrella portion, but since the umbrella portion is heavy with respect to the shaft portion, it is difficult to obtain a light and unbalanced operation. The problem caused by the inertia of the umbrella has become a problem in response to the demand for high speed and high output of the engine. As a countermeasure against this, as shown in FIG. 2, a recess 1b is provided on the surface of the umbrella 1 to reduce the weight of the umbrella portion, but the umbrella surface forms a part of the combustion chamber of the engine. It is difficult to obtain a sufficient weight reduction of the umbrella portion because the shape is naturally restricted due to the relationship of combustion efficiency, compression ratio, and the like.
一方エンジンの高速高出力化の要求に対する対応策とし
て傘部のみならず軸部をも中空とした中空エンジンバル
ブが種々提案されている。（例えば特開昭６３−１０９
２０５号、実開昭６２−１０２８０６号） 〔考案が解決しようとする課題〕 上述のごとく、中実の表面に凹みを設けることは軸部に
対する傘部の十分な軽量化を計ることが困難であるが、
一方傘部と共に軸部をも中空とすることは全体としての
軽量化は計れるが、軸部と傘部との重量バランスを適当
に選ぶことが困難であり、かつ、工程が複雑となってコ
スト高となる欠点がある。したがって軸部と傘部の重量
バランスを適当に選べて、かつ軽量化が計れ、しかもコ
ストの安いエンジンバルブの出現が要望されている。On the other hand, various hollow engine valves in which not only the umbrella portion but also the shaft portion are hollow have been proposed as a measure to meet the demand for high speed and high output of the engine. (For example, JP-A-63-109
No. 205, No. 62-102806) [Problems to be solved by the invention] As described above, it is difficult to sufficiently reduce the weight of the umbrella portion with respect to the shaft portion by providing the recess on the solid surface. But
On the other hand, making the shaft part hollow with the umbrella part can reduce the weight as a whole, but it is difficult to properly select the weight balance between the shaft part and the umbrella part, and the process becomes complicated, resulting in cost reduction. It has the drawback of becoming expensive. Therefore, there is a demand for the appearance of an engine valve capable of appropriately selecting the weight balance between the shaft portion and the umbrella portion, reducing the weight, and lowering the cost.
本考案のエンジンバルブは上記課題を解決するための手
段として下記の構成を備えている。The engine valve of the present invention has the following configuration as a means for solving the above problems.
（１）エンジンバルブを形成する傘部表面に円錐状の中
空部を形成するとともに該中空部の開口端に密閉蓋を溶
接し、かつ、該傘部に通ずる軸部を中実としたこと。(1) A conical hollow portion is formed on the surface of the umbrella portion forming the engine valve, a sealing lid is welded to the open end of the hollow portion, and the shaft portion communicating with the umbrella portion is solid.
本考案によると加工が容易で安価に製作できるにもかか
わらず、傘部と軸部との好ましい重量バランスが得ら
れ、したがって、高速運転中傘部が振られ、ガイド摩
耗、軸部のカジリ、焼付等の不具合を生ずることなく、
かつ、軽量化を実現することができる。According to the present invention, a favorable weight balance between the umbrella portion and the shaft portion can be obtained even though it is easy to process and can be manufactured at low cost. Therefore, the umbrella portion is shaken during high-speed operation, guide wear, shaving of the shaft portion Without causing problems such as burning
At the same time, weight reduction can be realized.
第１図は本考案実施の１例を示すもので、中実の軸部２
に通ずる傘部１の表面に円錐状の中空部１ａを形成する
とともに該中空部１ａの開口端に密閉蓋３が溶接されて
いる。FIG. 1 shows an embodiment of the present invention, in which a solid shaft portion 2
A conical hollow portion 1a is formed on the surface of the umbrella portion 1 that communicates with, and a sealing lid 3 is welded to the open end of the hollow portion 1a.
本考案エンジンバルブの材質は傘部、蓋部共にＳＭＣ４
４０等の構造用鋼、ＳＵＨ３等のマルテンサイト系材
料、ＳＵＨ３５等のオーステナイト系材料、ＮＣＦ７５
１等のニッケル基材料、またはＴｉ・６Ａ１・４Ｖ等の
チタン合金が使用される。The material of the engine valve of the present invention is SMC4 for both the umbrella and lid.
Structural steels such as 40, martensitic materials such as SUH3, austenitic materials such as SUH35, NCF75
A nickel-based material such as 1 or a titanium alloy such as Ti.6A1.4V is used.
これら材質の素材を鍛造（据込みおよび押出し）・熱処
理（焼入、焼戻）・傘表面部加工（蓋挿入部加工）、蓋
溶接（摩耗溶接、電子ビーム溶接、レーザービーム溶接
等）、熱処理（応力除去）・機械加工の各工程を経て製
品とされる。Forging (upsetting and extruding), heat treatment (quenching, tempering), umbrella surface processing (lid insertion portion processing), lid welding (wear welding, electron beam welding, laser beam welding, etc.), heat treatment of these materials (Stress removal) -Products are made through each process of machining.
本考案により奏せられる効果は次の通りである。 The effects of the present invention are as follows.
（１）傘部の軸部に対する重量バランスが適当となって
エンジン作動中傘部が振られ、ガイド摩耗、軸部のカジ
リ、焼付き等の不具合発生が防止される。(1) The balance of the weight of the umbrella portion with respect to the shaft portion becomes appropriate, and the umbrella portion is shaken during engine operation, and problems such as guide wear, shaft galling, and seizure are prevented.
（２）全体として軽量化が計れるので、エンジンの高速
高出力化に対処できる。(2) Since the weight can be reduced as a whole, it is possible to cope with the high speed and high output of the engine.
（３）従来法に比してコストの面で大差なく安価に製作
できる。(3) Compared with the conventional method, it can be manufactured at a low cost without much difference in cost.
第１図は本考案実施の１例を示す断面図、第２図は従来
例を示す断面図である。 図中の符号はそれぞれ下記部材を示す。 １：傘部、２：軸部 ３：蓋部、１ａ：中空部 １ｂ：凹みFIG. 1 is a sectional view showing an example of the implementation of the present invention, and FIG. 2 is a sectional view showing a conventional example. Reference numerals in the drawings indicate the following members, respectively. 1: Umbrella part, 2: Shaft part 3: Lid part, 1a: Hollow part 1b: Recess
Claims (1)
状の中空部を形成するとともに該中空部の開口端に密閉
蓋を溶接し、かつ、該傘部に通ずる軸部を中実としてな
るエンジンバルブ。1. A conical hollow portion is formed on a surface of an umbrella portion forming an engine valve, a sealing lid is welded to an opening end of the hollow portion, and a shaft portion communicating with the umbrella portion is solid. Engine valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164367U JPH0629443Y2 (en) | 1988-12-21 | 1988-12-21 | Engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164367U JPH0629443Y2 (en) | 1988-12-21 | 1988-12-21 | Engine valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0285806U JPH0285806U (en) | 1990-07-06 |
| JPH0629443Y2 true JPH0629443Y2 (en) | 1994-08-10 |
Family
ID=31449910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988164367U Expired - Lifetime JPH0629443Y2 (en) | 1988-12-21 | 1988-12-21 | Engine valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629443Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63151911U (en) * | 1987-03-27 | 1988-10-05 |
-
1988
- 1988-12-21 JP JP1988164367U patent/JPH0629443Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0285806U (en) | 1990-07-06 |
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