JPS58180708A - Valve rocker system member of internal-combustion engine - Google Patents
Valve rocker system member of internal-combustion engineInfo
- Publication number
- JPS58180708A JPS58180708A JP6435882A JP6435882A JPS58180708A JP S58180708 A JPS58180708 A JP S58180708A JP 6435882 A JP6435882 A JP 6435882A JP 6435882 A JP6435882 A JP 6435882A JP S58180708 A JPS58180708 A JP S58180708A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- rocker arm
- combustion engine
- pad material
- speed steel
- 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 7
- 239000000463 material Substances 0.000 claims abstract description 39
- 229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 11
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 9
- 238000005121 nitriding Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000005219 brazing Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
Abstract
Description
【発明の詳細な説明】
本発明は、内燃機関の動弁系部材であって、特にロッカ
ーアームとこの口、ツカ−アームに作用するカムとの材
質組合せに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve train member for an internal combustion engine, and particularly relates to a material combination of a rocker arm, its opening, and a cam acting on the lever arm.
これら内燃機関の動弁系部材は、可酷な条件下、特にデ
ィーゼル機関のように、潤滑油が古くなるに従って、こ
の潤滑油中にカーボンスーツ等の燃焼生成物が混入する
ものにおいては、潤滑油使用期間が長くなるに従って、
その耐久性が著しく損なわれる。従来、これらの動弁系
部材としては、カム材としてチル鋳鉄が、ロッカーアー
ム材として、硬質Ｃｒ メッキ、特殊鋼、特殊鋳鉄、及
び焼結材等が使用されぞきた。本発明は、これらの材質
の組合せに代えて、新規の材質を組合せることにより、
潤滑油に対する耐久性の遥かに優れた動弁系部材を提供
するもので、その構成として、チル鋳鉄からなるカムに
対し、ロッカーアームにお −ける前記カムとの接触面
に、粉末高速度鋼のパッド材を接合したことを特徴とす
るものである。The valve train components of these internal combustion engines must be lubricated under harsh conditions, especially in diesel engines, where combustion products such as carbon suit are mixed into the lubricating oil as it ages. As the period of oil use increases,
Its durability is significantly impaired. Conventionally, for these valve train members, chilled cast iron has been used as the cam material, and hard Cr plating, special steel, special cast iron, sintered material, etc. have been used as the rocker arm material. The present invention combines new materials instead of these combinations of materials.
This provides a valve train member that has far superior durability against lubricating oil, and its structure consists of a cam made of chilled cast iron, and powdered high-speed steel on the contact surface of the rocker arm with the cam. It is characterized by joining pad materials.
すなわち、この種の動弁系部材は、図面に示すように、
カムシャフト（１）−に取付けられて回転せしめられる
カム（２）に対応して、弁腕軸（３）へロッカーアーム
（４）を取付け、このロッカーアーム（４）におけるカ
ム（２）との接触部に、耐摩耗性の良好なパッド材（５
）が溶接又はロー付けによって固着され、このパッド材
（５）がカム（２）へ接触し、該カム（２）の回転によ
ってロッカーアーム（４）が揺動するが、これら両者の
接触部において、本発明では、このカム（２）材として
、チル鋳鉄を使用する一方、前記パッド材（５）として
、粉末高速度鋼を使用し、これらの材質組合せによって
、耐久性の著しく改善された動弁系機構を得るに至った
ものである。That is, this type of valve train member, as shown in the drawing,
A rocker arm (4) is attached to the valve arm shaft (3) corresponding to the cam (2) attached to the camshaft (1) and rotated, and the relationship between the cam (2) and the cam (2) on this rocker arm (4) is Pad material with good wear resistance (5
) is fixed by welding or brazing, this pad material (5) contacts the cam (2), and the rocker arm (4) swings due to the rotation of the cam (2), but at the contact point between the two In the present invention, chilled cast iron is used as the cam (2) material, and powdered high-speed steel is used as the pad material (5), and the combination of these materials results in a motion with significantly improved durability. This led to the creation of a valve system mechanism.
次に、本発明の詳細な説明すると、まずカム（２）材と
して、下記（１）に示す化学成分と硬度を有する材料を
用い、ロッカーアームパッド材（５）として下記（２）
に示すように成分の異なる材料人）の）を用意して、夫
々組合せて使用した。Next, to explain the present invention in detail, first, as the cam (2) material, a material having the chemical composition and hardness shown in the following (1) is used, and as the rocker arm pad material (5), the following (2) is used.
As shown in Figure 2, materials with different components were prepared and used in combination.
（１） カム材
材質：チル鋳鉄
硬度：ＨＲｃ（ロックウェル硬さ）ン４５化学成分：Ｃ
：３．Ｏ〜３．６ Ｐ：り０．ＩＳｉ：２．Ｏ〜２
．６ Ｓ：り０．１５Ｍｎ ： ０．５〜１． ＯＦ
ｅ ； 残部上記（１）化学成分を有する材料に、な
じみ向上のためリン酸塩被膜処理、軟窒化処理を施し、
又必要に応じて各種添加剤（Ｎｉ、 Ｃｒ、 Ｍｏ等）
を添加してもよい。(1) Cam material: chilled cast iron Hardness: HRc (Rockwell hardness) N45 Chemical composition: C
:3. O~3.6 P: ri0. ISi:2. O~2
．． 6 S: 0.15Mn: 0.5-1. OF
e; The remainder is a material having the above chemical components (1), subjected to phosphate coating treatment and soft nitriding treatment to improve conformability,
Also, various additives (Ni, Cr, Mo, etc.) as necessary.
may be added.
（２） ロッカーアームパッド材
■材質：粉末高速度鋼（Ａｌ
硬度二ＨＲｃン６６
化学成分： Ｃ：１．２５ Ｖ：３．ＯＣｒ：
４．ＯＣｏ： ８．５
Ｍｏ：５．ＯＦｅ：残部
Ｗ：６．０
■材質：粉末高速度鋼ＣＢＩ
硬度：ＨＲｃ＞６６
化学成分：Ｃ：２、ＯＷ：３．５
Ｃｒ：４．ＯＶニア、Ｏ
Ｍｏ ： ３．０ Ｆｅ二残部
上記化学成分を有する材料Ｋｌ（Ｂ）に、軟窒化処理或
いは、粉末成形時にＮを１〜２％含有させてもよい。こ
こで使用されるＨＩＰ処理材とは、粉末高速度鋼の製造
に用いられる方法のうち、ＨＩＰ法を使用した材質であ
る。ＨＩＰ法とは粉末を充填し、密封したカプセルを高
温高圧下のガス雰囲気中で圧縮と焼結を同時に行ない、
高密度化させる方法で、高品質の粉末高速度鋼を安定し
て製造できることを特長とするものである。(2) Rocker arm pad material ■Material: Powdered high speed steel (Al Hardness: 2 HRc - 66 Chemical composition: C: 1.25 V: 3.OCr:
4. OCo: 8.5 Mo: 5. OFe: Remaining W: 6.0 ■Material: Powdered high speed steel CBI Hardness: HRc>66 Chemical composition: C: 2, OW: 3.5 Cr: 4. OV Near, O Mo: 3.0 Fe2 balance The material Kl (B) having the above chemical components may contain 1 to 2% N during soft nitriding treatment or powder compaction. The HIP-treated material used here is a material using the HIP method among methods used for manufacturing powdered high-speed steel. The HIP method involves simultaneously compressing and sintering a sealed capsule filled with powder in a gas atmosphere at high temperature and pressure.
This method is characterized by the ability to stably produce high-quality powdered high-speed steel using a high-density method.
次に、上記の化学成分及び硬度からなる各材料を組合せ
たものと、その他者種材質の組合せによるものを、下記
の条件によって試験を行ない、その摩耗量とスカッフの
発生具合を測定したところ、表１の通りであり、この表
においてピｉ−（へ）が本発明品を示し、本発明の組合
せによった場合、他の組合せに比較して特にロッカーア
ームには摩耗が認められない程良好で、またスカッフ自
身も極めて良好な結果を得ることができた。Next, we tested the combinations of materials with the above chemical components and hardness, and the combinations of other materials, under the following conditions, and measured the amount of wear and scuffing. The results are as shown in Table 1, and in this table, P i- indicates the product of the present invention, and when the combination of the present invention is used, compared to other combinations, wear is not observed particularly on the rocker arm. The results were very good, and the scuff itself was also very good.
試験条件
機関：４気筒ＯＨＣデイーゼル
機関回転数：８００ｒｐｍ
潤滑油：ディーゼル機関使用油
油温：８０°Ｃ
運転時間：２００ｈｒ
表 １
［・・
イ
−
ホ
なお、上記表１において、ロッカーアームスカッフの評
価は、ロッカーアームパッド材ニ、高合金チル鋳鉄を使
用し、カム材にチル鋳鉄を使用した場合を１００とし、
これを基準とした場合の数値を示している。Test conditions Engine: 4-cylinder OHC diesel engine Speed: 800 rpm Lubricating oil: Diesel engine Oil temperature: 80°C Operating time: 200 hr Table 1 is 100 when high-alloy chilled cast iron is used as the rocker arm pad material and chilled cast iron is used as the cam material.
The values shown are based on this.
以上説明したように、本発明の材質組合せによれば、従
来の材質組合せに比較して、摩耗量が著しく減少され、
耐久性の優れた動弁系部材を得ることができたものであ
る。As explained above, according to the material combination of the present invention, the amount of wear is significantly reduced compared to the conventional material combination.
It was possible to obtain a valve train member with excellent durability.
図面は、本発明の材質を使用するロッカーアームとカム
部分の一部横断面図である。
（２Ｌ、、カム、（４１１，’ロッカーアーム、 （５
１，、、バッド材。The drawing is a partial cross-sectional view of a rocker arm and cam portion using the material of the present invention. (2L,, cam, (411,'rocker arm, (5
1,,, Bud material.
Claims (1)
おける前記カムとの接触面に粉末高速度鋼のパッド材を
接合したことを特徴とする内燃機関の動弁系部材。 ２、 粉末高速度鋼のパッド材に、軟窒化処理を施した
特許請求の範囲第１項記載の内燃機関の動弁装置。[Scope of Claims] 1. A valve train member for an internal combustion engine, characterized in that a pad material made of powdered high-speed steel is bonded to a cam made of chilled cast iron, and a pad material made of powdered high-speed steel is bonded to the contact surface of the rocker arm with the cam. 2. The valve train for an internal combustion engine according to claim 1, wherein the pad material is made of powdered high-speed steel and is subjected to soft nitriding treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6435882A JPS58180708A (en) | 1982-04-16 | 1982-04-16 | Valve rocker system member of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6435882A JPS58180708A (en) | 1982-04-16 | 1982-04-16 | Valve rocker system member of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58180708A true JPS58180708A (en) | 1983-10-22 |
Family
ID=13255945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6435882A Pending JPS58180708A (en) | 1982-04-16 | 1982-04-16 | Valve rocker system member of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58180708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856469A (en) * | 1987-09-25 | 1989-08-15 | Mazda Motor Corporation | Mechanical parts of valve driving mechanism for internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5578117A (en) * | 1978-12-09 | 1980-06-12 | Umezawa Koji | Valve gear link member |
| JPS562143A (en) * | 1979-06-15 | 1981-01-10 | Bayer Ag | Apparatus for producing endless plastic form web* especially hard plastic form web |
| JPS56129710A (en) * | 1980-03-17 | 1981-10-12 | Toyota Motor Corp | Rocker arm |
-
1982
- 1982-04-16 JP JP6435882A patent/JPS58180708A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5578117A (en) * | 1978-12-09 | 1980-06-12 | Umezawa Koji | Valve gear link member |
| JPS562143A (en) * | 1979-06-15 | 1981-01-10 | Bayer Ag | Apparatus for producing endless plastic form web* especially hard plastic form web |
| JPS56129710A (en) * | 1980-03-17 | 1981-10-12 | Toyota Motor Corp | Rocker arm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856469A (en) * | 1987-09-25 | 1989-08-15 | Mazda Motor Corporation | Mechanical parts of valve driving mechanism for internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2245472C1 (en) | Durable sliding member | |
| US4588441A (en) | Process for the preparation of sintered alloys for valve mechanism parts for internal combustion engines | |
| JPS62211355A (en) | Wear-resisting ferrous sintered alloy | |
| JPS6039105A (en) | Cam shaft and its production | |
| JPS6119809B2 (en) | ||
| JPS58180708A (en) | Valve rocker system member of internal-combustion engine | |
| JPS5913046A (en) | Pad member of rocker arm | |
| JP4282894B2 (en) | piston ring | |
| CA2584460A1 (en) | Sintered alloys for cam lobes and other high wear articles | |
| JP3942136B2 (en) | Iron-based sintered alloy | |
| JPH0116905B2 (en) | ||
| JP2552638B2 (en) | piston ring | |
| JPH0137466B2 (en) | ||
| JPH0116296B2 (en) | ||
| JPS6389643A (en) | Wear-resistant ferrous sintered alloy | |
| JPS63247337A (en) | Wear resistant iron based sintered alloy | |
| JPS60219408A (en) | Rocker arm | |
| JPS6246601B2 (en) | ||
| JPS60255958A (en) | Wear resistant sintered alloy | |
| JPS62167860A (en) | Combination of cam nose material and rocker pad material | |
| JPS6367542B2 (en) | ||
| JPS6123808A (en) | Poppet valve system member for internal-combustion engine | |
| JPH07243528A (en) | Combination of sliding member | |
| JPS60159154A (en) | Wear resistant sintered sliding material | |
| JPH0116298B2 (en) |