JPS58214609A - Lifter for movable valve of internal-combustion engine - Google Patents
Lifter for movable valve of internal-combustion engineInfo
- Publication number
- JPS58214609A JPS58214609A JP9869682A JP9869682A JPS58214609A JP S58214609 A JPS58214609 A JP S58214609A JP 9869682 A JP9869682 A JP 9869682A JP 9869682 A JP9869682 A JP 9869682A JP S58214609 A JPS58214609 A JP S58214609A
- Authority
- JP
- Japan
- Prior art keywords
- lifter
- movable valve
- end plate
- valve
- light
- 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
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
- F01L1/14—Tappets; Push rods
- F01L1/143—Tappets; Push rods for use with overhead camshafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はエンジンの動弁用り７タに関するもので、そ
の目的とするところは勘弁用リフタの軽量化と、軽量化
に伴う耐摩性の低下を阻止すること全目的とするもので
ある。[Detailed Description of the Invention] This invention relates to a valve train for an engine, and its purpose is to reduce the weight of a valve lifter and to prevent a decrease in wear resistance due to the weight reduction. That is.
従来、動弁用リフタは鉄鋼に工って作られ、そンジンに
大きな動力損失を与え、ひいては燃料の経済性を損ねて
いる。Conventionally, lifters for valve trains are made of steel, which causes a large power loss to the engine, which in turn impairs fuel economy.
この発明は以上の不＾合を除くべくなされたもので、動
弁用リフタをフルイユウム、マグネシウムなどの軽合金
に↓って一体的ｆＣ鋳造し、少なくとも動弁カムに１っ
て強圧される頂面と弁杆の頭部を押圧する裏■とに炭素
鋼ステンレス鋼などの鋼質金属、あるいはセフォックス
、炭化タングステンなどの硬質材料′ｆｒ萌射してその
表面１ｃ付着させた点に％黴がある〇
以下、図示の実施例ＶＣぶって本発明を説明する。This invention was made in order to eliminate the above-mentioned disadvantages, and the lifter for the valve train is made of a light alloy such as fluorine or magnesium by integral fC casting, and at least one part of the lifter is attached to the valve train cam and the top is strongly pressurized. A steel metal such as carbon steel or stainless steel, or a hard material such as Cefox or tungsten carbide is sprouted on the surface and the back that presses the head of the valve rod, and % mold is deposited on the surface 1c. Hereinafter, the present invention will be explained by referring to the illustrated embodiment VC.
図中１はシリンダヘッドの一部に形成さｊ−るバルブリ
フタの案内孔、２＃ま十の案内孔１へ摺動自在Ｖｃ嵌合
さｎた動弁用のりフタである０リフタ２は筒状の胴部２
ａと〜ｔ （ｊ）−Ｍ Ｋ形成される端板部２ｂとから
なっている。端板部２ｂはその頂面に孔３が設けられ、
そこに収賽したスペーサ４を介して動弁カム５に対向し
ている０６はカム５を支持するカム軸であ石０紬［Ｌ：
端板部２ｂの裏面にはその中央部に位置して小径の突部
７が形成されており、突８７の端面はその下側に位置す
る吸気弁、あるいは排気弁の弁杆８の頂部に面している
。Ｂは弁ばねでありリテーナ１０お↓び二つ割りのコツ
タ１１を介して弁杆８をカム軸方向、すなわち閉弁方向
へ押圧している。以上の動弁用リフタにおいて、胴部２
ａと端板部２ｂとはアルミニウム。In the figure, 1 is a guide hole for the valve lifter formed in a part of the cylinder head, 2 is a valve lid that is slidably fitted into the guide hole 1, and 0 lifter 2 is a cylinder. body part 2
It consists of an end plate portion 2b formed by a and t(j)-MK. The end plate portion 2b is provided with a hole 3 on its top surface,
06, which faces the valve train cam 5 through the spacer 4 placed therein, is a cam shaft that supports the cam 5.
A small-diameter protrusion 7 is formed at the center of the back surface of the end plate portion 2b, and the end surface of the protrusion 87 is attached to the top of the valve rod 8 of the intake valve or exhaust valve located below the protrusion 7. Facing. Reference numeral B denotes a valve spring which presses the valve rod 8 in the camshaft direction, that is, in the valve closing direction, via the retainer 10 and the two-piece lever 11. In the above valve train lifter, the body 2
a and the end plate portion 2b are made of aluminum.
マグネシウムなどの軽合金をダイカスト鋳造し、機械加
工した後、その端板部２ｂの頂面と裏面とに硬質クロム
、炭素鋼、ステンレス鋼あるいはシリコンを過共晶に含
むアルミニウムなど硬質金属又はセラミックス、炭化タ
ングステンなどの硬質材料全溶射しである０図中１５は
溶射層を示す０溶射層の厚さは０−２〜０．５ｍｍが好
ましい。これ工り薄過ぎると陥没金生じ易くなり、逆に
厚すぎると重量が増加し友り剥離し易くなる。他の実施
例に工ｊ２けりフタはナイロン、テフロンなど硬質の合
成樹脂を射出成形し友ものに前記したと同様の溶射を施
しても↓い。なお、この場合溶射金属層は前記した軽合
金の場合に比して厚く形成するのが好ましい。After die-casting and machining a light alloy such as magnesium, the top and back surfaces of the end plate portion 2b are made of hard metal such as hard chromium, carbon steel, stainless steel, or aluminum containing hypereutectic silicon, or ceramics. A hard material such as tungsten carbide is completely thermally sprayed. 15 in the figure indicates a thermally sprayed layer. The thickness of the thermally sprayed layer is preferably 0-2 to 0.5 mm. If it is too thin, it is likely to cause caving, and if it is too thick, the weight will increase and it will easily peel off. In another embodiment, the lid may be made of a hard synthetic resin such as nylon or Teflon by injection molding, and the other material may be thermally sprayed in the same manner as described above. In this case, it is preferable that the sprayed metal layer be formed thicker than in the case of the light alloy described above.
この発明の動弁リフタは以上のように工ｙジンケース内
を摺動する円筒状の胴部と、その胴部の一端ｙｃ形成さ
ハ動升カムＶＣ↓って押圧される円盤状の端板部とから
なｐｌそむらが軽合金によって一体的に鋳造さｎると共
に、前記端板部の頂面と裏面と１こ硬質祠杓會―躬して
被覆したものであるから、全体全軽１１ｉｒｃ構成でき
る０又、動弁カムや弁杆とＶｃ↓つて醋しい備′ｓを打
ける頂面と裏面は溶射されｆｃ硬質制別に↓つて被覆さ
ｊ、ているので、衝撃に工って摩損音生じることがない
０ま友、焼結面をよ多孔性であって保油性が工く、摩損
防止効果が一層助長さ７’Ｌる。更にリフタの個有振動
が溶射層ｒＣ↓つて干渉される結果、股創にもよるが弁
の開閉のために生じる機械騒音を低減できるなどの幼果
がある。As described above, the valve lifter of the present invention has a cylindrical body that slides inside the engine case, and a disc-shaped end that is pressed by a moving cam VC↓ formed at one end of the body. The plate part and the plastic part are integrally cast from a light alloy, and the top and back surfaces of the end plate part are coated with a hard coating. The top and back surfaces are thermally sprayed and coated with FC hard coating, so it is designed to withstand impact. In addition, the sintered surface is highly porous and oil-retentive, which further enhances the abrasion prevention effect. Furthermore, as a result of the unique vibration of the lifter being interfered with by the sprayed layer rC↓, there is a small effect that, depending on the crotch wound, it is possible to reduce the mechanical noise generated due to the opening and closing of the valve.
なお、溶射の方法ｔ、ｉ溶融式、粉末式、溶線式などの
油、線爆溶射などイ１−廐である。The thermal spraying methods include oil such as melting, powder, and wire blasting, and wire blasting.
図面ｒよ本発明の一実施例會示すものて、第１図はエン
ジンの動弁系全取出して示す断面図、第２図は−ｔの四
部の拡大図である。
２６＠＠ｅリフタ、２ｂ＠骨・Φ端板部。Drawing r shows one embodiment of the present invention. Fig. 1 is a cross-sectional view showing the entire valve train of the engine taken out, and Fig. 2 is an enlarged view of four parts -t. 26@@e lifter, 2b@bone/Φ end plate part.
Claims (1)
の一端に形成され動弁カムに工って押圧さｎる円盤状の
端板部とからなり、それらが軽合金に工って一体的に鋳
造されると共に、前記端板部の頂面と裏面とに硬質材料
を溶射して被覆してなる動弁用リフタ０It consists of a cylindrical body that slides inside the engine case, and a disc-shaped end plate formed at one end of the body and pressed against the valve cam. A lifter for a valve train 0, which is integrally cast and coated with a hard material by thermal spraying on the top surface and the back surface of the end plate portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9869682A JPS58214609A (en) | 1982-06-09 | 1982-06-09 | Lifter for movable valve of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9869682A JPS58214609A (en) | 1982-06-09 | 1982-06-09 | Lifter for movable valve of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58214609A true JPS58214609A (en) | 1983-12-13 |
Family
ID=14226664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9869682A Pending JPS58214609A (en) | 1982-06-09 | 1982-06-09 | Lifter for movable valve of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58214609A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295108U (en) * | 1985-12-05 | 1987-06-17 | ||
| JPS62138803U (en) * | 1986-02-27 | 1987-09-01 | ||
| JPS6419003U (en) * | 1987-03-12 | 1989-01-31 | ||
| US4909198A (en) * | 1988-03-01 | 1990-03-20 | Toyota Jidosha Kabushiki Kaisha | Aluminum alloy valve lifter with sprayed coating and method of producing same |
| US5239951A (en) * | 1992-11-12 | 1993-08-31 | Ford Motor Company | Valve lifter |
| US5934236A (en) * | 1992-11-12 | 1999-08-10 | Ford Global Technologies, Inc. | Low friction valve train |
| US6167856B1 (en) | 1992-11-12 | 2001-01-02 | Ford Global Technologies, Inc. | Low friction cam shaft |
-
1982
- 1982-06-09 JP JP9869682A patent/JPS58214609A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295108U (en) * | 1985-12-05 | 1987-06-17 | ||
| JPS62138803U (en) * | 1986-02-27 | 1987-09-01 | ||
| JPH0541203Y2 (en) * | 1986-02-27 | 1993-10-19 | ||
| JPS6419003U (en) * | 1987-03-12 | 1989-01-31 | ||
| US4909198A (en) * | 1988-03-01 | 1990-03-20 | Toyota Jidosha Kabushiki Kaisha | Aluminum alloy valve lifter with sprayed coating and method of producing same |
| US5239951A (en) * | 1992-11-12 | 1993-08-31 | Ford Motor Company | Valve lifter |
| US5934236A (en) * | 1992-11-12 | 1999-08-10 | Ford Global Technologies, Inc. | Low friction valve train |
| US6167856B1 (en) | 1992-11-12 | 2001-01-02 | Ford Global Technologies, Inc. | Low friction cam shaft |
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