JPS61169606A - Valve guide insertless light alloy cylinder head - Google Patents
Valve guide insertless light alloy cylinder headInfo
- Publication number
- JPS61169606A JPS61169606A JP1028785A JP1028785A JPS61169606A JP S61169606 A JPS61169606 A JP S61169606A JP 1028785 A JP1028785 A JP 1028785A JP 1028785 A JP1028785 A JP 1028785A JP S61169606 A JPS61169606 A JP S61169606A
- Authority
- JP
- Japan
- Prior art keywords
- valve guide
- cylinder head
- alloy
- fibers
- valve
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は内燃機関のバルブガイドインサートを省略した
シリンダヘッ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 cylinder head for an internal combustion engine that does not include a valve guide insert.
内燃機関のバルブ機構は、一般に所定形状のシリンダヘ
ッドに設けられたバルブガイド孔に、吸気バルブ又は排
気バルブのバルブステムが摺動自在に挿通さｎ１バルブ
ガイド孔にはバルブステムの高速摺動にも十分耐えられ
るように、バルブガイドブツシュが取付けられている。In the valve mechanism of an internal combustion engine, the valve stem of an intake valve or exhaust valve is generally slidably inserted into a valve guide hole provided in a cylinder head of a predetermined shape. A valve guide bushing is installed to withstand even the most severe damage.
−万、車輌の軽址化のために、内燃機関のシリンダヘッ
ドをアルミ合金またはマグネシウム合金等の軽合金製と
する傾向にあり、このような軽合金シリンダヘッドでは
、バルブガイドブツシュの耐摩耗性と耐焼付性を確保す
るために、主として鋳鉄系のバルブガイドブツシュを加
工・圧入している。そのためシリンダヘッドのバルブガ
イドブツシュ下穴加工、バルブガイドブツシュ加工、圧
入工程等に多大のコストと時間を費やしているだけでな
く、バルブの冷却効果も低くなるため、バルブガイドブ
ツシュやバルブに高級な耐熱耐摩耗性材料や表面処理が
必要となり、エンジン扁性能化のネックにもなっている
。-In order to make vehicles lighter, the cylinder heads of internal combustion engines tend to be made of light alloys such as aluminum alloys or magnesium alloys.In such light alloy cylinder heads, the wear resistance of the valve guide bushes In order to ensure durability and seizure resistance, the valve guide bushings are mainly machined and press-fitted from cast iron. Therefore, not only is a large amount of cost and time spent on preparing holes for the valve guide bushings in the cylinder head, machining the valve guide bushings, and press-fitting the valves, but also the cooling effect of the valves is lowered. This requires high-grade heat-resistant and wear-resistant materials and surface treatments, which is also a bottleneck in improving engine performance.
そこでバルブガイドブツシュを廃止してパルフカイドブ
ツシュ部位の母材に直接、溶射、クラツディングまたは
アロイング等により耐熱、耐摩耗材料を表面＊ａした場
合には、運転中の熱サイクルによる熱歪に対し、母材と
の熱膨張の差、弾性率の差及び母材の剛性不足等により
、破惜材の剥離が生じ易く、実用化の妨げになっている
。Therefore, if the valve guide bushing is abolished and a heat-resistant and wear-resistant material is applied directly to the base material of the palficide bushing part by thermal spraying, cladding, alloying, etc., thermal distortion due to thermal cycles during operation may occur. On the other hand, due to differences in thermal expansion with the base material, differences in elastic modulus, insufficient rigidity of the base material, etc., the broken material tends to peel off, which hinders its practical use.
〔発明が解決しようとする問題点〕
本発明はＡｔ合金またはダ合金製シリンダヘッドのバル
ブガイド部の材質を強化し、あるいはさらにバルブステ
ムとの摺動部を、耐摩耗性材ヘッドを提供しようとする
ものである。[Problems to be Solved by the Invention] The present invention aims to strengthen the material of the valve guide part of a cylinder head made of At alloy or Da alloy, or further provide a head made of wear-resistant material for the sliding part with the valve stem. That is.
本発明のバルブガイドインサートレス軽合金シリンダヘ
ッドは、Ｍ合金またはり合金製シリンダヘッドのバルブ
ガイド部の上端部及び／または下端部を繊維強化金属（
Ｐ ＫＭ ）化し、あるいはさらに該繊維強化部分のパ
ルプステムとの当り面部に耐摩耗性金属材料の被覆層を
設けたことを特徴とするものである。The light alloy cylinder head without a valve guide insert of the present invention has an upper end and/or a lower end of the valve guide part of the M alloy or polyalloy cylinder head made of fiber-reinforced metal.
P KM ), or further, a coating layer of a wear-resistant metal material is provided on the surface of the fiber-reinforced portion that comes into contact with the pulp stem.
本発明に用いられる強化繊維としては金属繊維、セラミ
ック繊維、ガラス繊維、炭素繊維等鋳造時の高温に耐え
るものなら種類は選ばない。The reinforcing fibers used in the present invention may be of any type as long as they can withstand the high temperatures during casting, such as metal fibers, ceramic fibers, glass fibers, and carbon fibers.
例えば金属繊維としては５ＣＢ２０．８ＣＭ４０゜Ｓ
Ｕ Ｓ ４１０等のスチール及び鋳鉄等の鉄系繊維、Ｎ
ｉ糸、 Ｃｏ系 Ｔ ｓ系、 Ｃｕ糸等の合金繊維が挙
げられ、セラミック繊維としては８１０ｍ、Ａｔ５（Ｊ
ａ、ＳｉＣ等が挙げられる。これらの繊維は長繊維であ
れｄ線径５ないし３００μｍのもの、短繊維であれば線
径０．０５ないし２０μｍで長さが１０ないし５００μ
ｍのものが好ましく、かつそれぞれが１０ないし４０−
の体積率で基材中に含まｎていることが好ましい。For example, as a metal fiber, 5CB20.8CM40°S
Iron-based fibers such as steel and cast iron such as US 410, N
Alloy fibers such as i-thread, Co-based Ts-based, Cu thread, etc. are listed, and ceramic fibers include 810m, At5(J
a, SiC, etc. These fibers are long fibers with a d-line diameter of 5 to 300 μm, and short fibers with a wire diameter of 0.05 to 20 μm and a length of 10 to 500 μm.
preferably m, and each 10 to 40-
It is preferable that the base material contains n in a volume ratio of n.
金属ｍ維はセラミック繊維等の非金属繊維に比べてマ）
ＩＪラックス属との濡れ性にまさり、またコストも安
く、強度特性自体はセラミック繊維に劣るものの、十分
実用に（ｍするものを得ることができる。Compared to non-metallic fibers such as ceramic fibers, metal fibers are
It has superior wettability to IJ Lux, is lower in cost, and although its strength characteristics are inferior to ceramic fibers, it can be used in practical applications.
強化４．維の長短の種別、サイズ、林状率等については
、上記の限定範凹内にあルば、ＰＬ−ＬＭの形成が不梃
になるとか、強化繊維が剥落したり１相手材を攻撃した
り、耐熱性、耐摩耗性が不十分であるというような不具
合を生ずることがなく、基材と混合し−Ｍ覆材料として
パルプステムとの当り面部に塗布することも容易であり
、と抄わけ耐摩耗性の向上に効果がある。Strengthening 4. If the length, size, forest rate, etc. of the fibers are within the above-mentioned limits, the formation of PL-LM may become unstable, the reinforcing fibers may fall off, or they may attack the other material. It does not cause problems such as insufficient heat resistance and abrasion resistance, and it is easy to mix with the base material and apply it to the contact surface with the pulp stem as a -M covering material. Particularly effective in improving wear resistance.
本発明におけるｆ”ＫＭ基材としての軽合金は、従来こ
の種の用途に供せられていたものが使用でき、具体的に
はＡＣ４Ｃアルミ合金、ＡＺ９１マグネシウム合金等で
あるが、目的により一層耐熱性、耐摩耗性のあるもの、
例えばＡＤＴ４等を用いることもできる。そして上記の
強化繊維との組合せについての特別の限定はない。As the light alloy used as the f''KM base material in the present invention, those that have been conventionally used for this type of purpose can be used, specifically AC4C aluminum alloy, AZ91 magnesium alloy, etc., but depending on the purpose, more heat-resistant resistant, wear-resistant,
For example, ADT4 etc. can also be used. There are no particular limitations on the combination with the above-mentioned reinforcing fibers.
本発明においてＦｈＭ化する部分をバルブガイド部の上
端部及び／または下端部に限定したのは、バルブガイド
の摩耗の大きいのは上端部及び下端部のみであり、全面
的にＦＲＭ化したのでは機械加工性とコストアップとの
問題があるからである。上下の端部のみｔｐＲＭ化する
に際しては上端部と下端部でＭ維屑質または繊維密度を
変えてもよい。例えばエキゾーストバルブガイドの場合
、バルブガイドの下側ではピストンに近く、高温になる
ので耐熱性のあるセラミック繊維を用いてＦＲＭ化し、
上側では下側程の耐熱性を硬水されないので金属繊維を
用いてＦｉＬＭ化してもよい。そして温度条件によって
はインテークパルプの上端部はＦＲＭ化しなくてもよい
。In the present invention, the part to be converted to FhM is limited to the upper end and/or lower end of the valve guide, because only the upper and lower ends of the valve guide are subject to significant wear, and it is not possible to convert the entire part to FRM. This is because there are problems with machinability and increased costs. When converting only the upper and lower ends into tpRM, the M fibrous material or fiber density may be changed between the upper and lower ends. For example, in the case of an exhaust valve guide, the lower part of the valve guide is close to the piston and reaches high temperatures, so we use heat-resistant ceramic fibers to make it FRM.
Since the upper side does not have the same heat resistance as the lower side, it may be made into FiLM using metal fibers. Depending on the temperature conditions, the upper end of the intake pulp may not be made into FRM.
次に２８Ｍ部の製造法については２種類の方法を示すこ
とができる。すなわち強化繊維を同心円状に巻いた成形
品、またはメツシュ状に配向させた成形品のようなスケ
ルトンプリフォームをシリンダヘッド用シェル減のバル
ブガイド部位の上端部及び／または下端部に配置し、軽
合金を注湯して上記プリフォームに浴浸し、シリンダヘ
ッドと一体的に鋳造するか、または短繊維をバインダー
を用いて所定の形状に成形し、Ａｔ合金またはダ合金に
よりダイカスト鋳造してリング形状のＦｋ＆Ｍ粗材とし
た後、シリンダヘッド用シェル屋のバルブガイド部位の
上端部及び／または下端部に配置し、シリンダヘッド本
体に鋳包むことにより形成することができる。Next, there are two methods for manufacturing the 28M portion. In other words, a skeleton preform, such as a molded product made of concentrically wound reinforcing fibers or a molded product oriented in a mesh pattern, is placed at the upper and/or lower end of the valve guide portion of the cylinder head shell to reduce the weight. Either pour the alloy into the preform and cast it integrally with the cylinder head, or mold short fibers into a predetermined shape using a binder and die-cast with At alloy or Da alloy to form a ring shape. After forming the Fk&M rough material, it can be placed at the upper end and/or lower end of the valve guide part of a cylinder head shell shop, and then cast into the cylinder head body.
パルプステムとの当り面に表面被覆する材料については
、比較的低温のインテーク及びエギゾーストバルプガイ
ドのパルプスプリング側及びインテークバルブガイドの
バルブシート側にはＭ合金またはダ合金を基材とする耐
摩耗性材料を使用し、比較的高温のエキシーストノくル
ブガイドのバルブシート側にはＦｅ基、Ｎｉ基、Ｃｕ基
合金のうちのいずれか１種からなる耐摩耗性材料を使用
する。これらの耐摩耗性材料は上記合金の微粉末を単独
でペースト化したものか、あるいは、合金微粉末に前述
したセラミック短繊維または金属短繊維を混合してペー
スト化したものを使用する。Regarding the material that is surface-coated on the surface that contacts the pulp stem, wear-resistant M alloy or Da alloy is used as a base material on the pulp spring side of the relatively low-temperature intake and exhaust valve guides and on the valve seat side of the intake valve guide. A wear-resistant material made of any one of Fe-based, Ni-based, and Cu-based alloys is used on the valve seat side of the relatively high-temperature exhaust valve guide. These wear-resistant materials are made by making a paste of the above-mentioned alloy fine powder alone, or by mixing the above-mentioned ceramic short fibers or metal short fibers with the alloy fine powder and making a paste.
上記の如くしてＡｔ合金またはり合金を繊維強化したＦ
ＲＭはエキゾースト側の高温に耐え、またインテーク側
では一層高い負荷に耐えることができる。そして耐摩耗
性被覆層を設けた場合には母材と被覆材料との熱膨張と
の差により発生する熱歪が強化繊維によって矯正され、
被覆層の剥崩や亀裂を防止することができる。F fiber-reinforced At alloy or glue alloy as described above
RM can withstand high temperatures on the exhaust side and even higher loads on the intake side. When a wear-resistant coating layer is provided, the thermal distortion caused by the difference in thermal expansion between the base material and the coating material is corrected by the reinforcing fibers.
It is possible to prevent the coating layer from peeling off or cracking.
本発明を図面に従い実施例によって更に詳細に説明する
。The present invention will be explained in more detail by way of examples in accordance with the drawings.
実施例１
平均線径２０μｍのＡすれバー５チ５ｉｎｓ長繊維を同
心円状に束ねて第１図に示す繊維成形体１を製造しシリ
ンダヘッド用シェル屋のインテーク及びエキゾーストバ
ルブガイド部の上端部と下端部に配置しｔ後、Ｍ合金（
ＡＣ４Ｃ）の溶湯により吸引鋳造してバルブガイド部の
上下端部を繊維体積率が９０％ Ｏ１８Ｍとし、更に必
要な熱処理と機械力ロエを施してシリンダヘッドを作製
した。第２図は上記シリンダヘッド２のインテーク側の
部分断面図を表わし、３はＦＲＭ、４ハハルプステム、
５はパルプヘッド、６はバルブシート、７は冷却水を示
す。なお比較として従来のバルブガイド８を備えたシリ
ンダヘクト２を第５図に示し、９はリテーナ、 １０
はパルプスプリングを示す。Example 1 A fiber molded article 1 shown in FIG. 1 was produced by concentrically bundling 5 pieces of 5-inch long fibers of A-sliding bars with an average wire diameter of 20 μm, and was attached to the upper end of the intake and exhaust valve guide parts of a cylinder head shell shop. After placing it on the lower end, M alloy (
The upper and lower ends of the valve guide part were suction cast using molten metal (AC4C) to have a fiber volume ratio of 90% O18M, and were further subjected to necessary heat treatment and mechanical rote to produce a cylinder head. FIG. 2 shows a partial sectional view of the intake side of the cylinder head 2, where 3 is an FRM, 4 is a haharp stem,
5 is a pulp head, 6 is a valve seat, and 7 is a cooling water. For comparison, a cylinder hect 2 equipped with a conventional valve guide 8 is shown in FIG. 5, where 9 is a retainer, and 10
indicates a pulp spring.
実施例２
実施例１で用いたＡｌｔｏｚ−５％８１０ｍ長繊維と線
径１′・２μｍのカーボン長繊維の２種類の繊維を用い
て、そ１ぞれ第１図に示した成形体１を作成し、カーボ
ン繊維による成形体１はノ（ルブシート側に、アルミナ
繊維による成形体１はパルプスプリング側に配置し、以
下、実施例１１と同様にしてシリンダヘッド２を作成し
た。第３図は本例シリンダヘッド２０部分断面図を表わ
し、ＦＲＭ３は体積率２０ｑ４のアルミナ繊維で強イヒ
さｆ′ＬＦＲＭ１１は体積率３５チの炭素繊維で強イヒ
されている。Example 2 Two types of fibers, Altoz-5% 810m long fibers used in Example 1 and carbon long fibers with a wire diameter of 1' and 2 μm, were used to form the molded body 1 shown in FIG. 1, respectively. The molded body 1 made of carbon fiber was placed on the lubricant sheet side, and the molded body 1 made of alumina fiber was placed on the pulp spring side, and a cylinder head 2 was made in the same manner as in Example 11. A partial sectional view of the cylinder head 20 of this example is shown, in which the FRM3 is reinforced with alumina fibers with a volume ratio of 20q4, and the FRM11 is reinforced with carbon fibers with a volume ratio of 35q4.
実施例３
バルブガイド部Ｆ几Ｍの繊維体積率を２５チとした以外
は実施例１と同様なシリンダヘクト２を作製し、Ｆ Ｒ
Ｍ Ｓ−３のパルプステム４との当り面に重量比でＡｚ
−１７％５ｉ−４５％Ｃｕの合金粉ペーストを塗布した
後、レーザービームにより局部加熱して半溶融状態で液
相焼結し、エアブロ−により急冷して第４図に示す耐摩
耗性＋４ａ層１２を形成させた。最後に耐摩耗性被覆Ｎ
１２のステム当り面部を機械〃ロエしてシリンダヘッド
２を完成した。Example 3 A cylinder hexagonal 2 similar to that of Example 1 was produced except that the fiber volume ratio of the valve guide part F was set to 25, and the F R
Az in weight ratio on the contact surface with the pulp stem 4 of M S-3
- After applying an alloy powder paste of 17%5i-45%Cu, it is locally heated with a laser beam and liquid-phase sintered in a semi-molten state, and then rapidly cooled with air blow to form a wear-resistant +4a layer as shown in Figure 4. 12 was formed. Finally, wear-resistant coating N
The cylinder head 2 was completed by machining the 12 stem contact surfaces.
芙施例４
実施例１のアルミナ繊維の代りに平均線径５０μｍのス
テンレス鋼（Ｓ Ｕ ８４１０ ）長繊維を用い、バル
ブガイド部の繊維体積率を３０チとした以外は実施例１
と同様なシリンダヘッド２を作製し、次にＦＲＭのパル
プステムとの当り面部に耐摩耗性被覆材トシ−ｒ−Ｆｅ
−５ｔｓｐａｏ−ｚｔｓＮｉ−１ｓｃ。Example 4 Example 1 except that stainless steel (SU 8410) long fibers with an average wire diameter of 50 μm were used instead of the alumina fibers of Example 1, and the fiber volume ratio of the valve guide part was 30 inches.
A cylinder head 2 similar to the above was prepared, and then a wear-resistant coating material Toshi-r-Fe was applied to the contact surface with the pulp stem of the FRM.
-5tspao-ztsNi-1sc.
の合金粉末に１．５％のグラファイトを混合してなるペ
ーストを塗布し、しかる後は実施例３と同様にしてシリ
ンダヘッドを完成した。A paste made by mixing 1.5% graphite with the alloy powder was applied, and thereafter a cylinder head was completed in the same manner as in Example 3.
試験例
上記の実施例１〜４で得たシリンダヘッドのバルブガイ
ド部につき実機運転による温度測定と耐久性評価を行な
った。なお比較のために、通常、バルブガイドブツシュ
として用いられるＦｅ１２を圧入したバルブガイド部に
ついても同様な試験を行なった。運転条件はｓｅｏｏｒ
ｐｍ×全負荷とし、その結果を下の表に示す。なお摩耗
量は上端部または下端部における測定値の最大値を示す
。Test Example The valve guide portions of the cylinder heads obtained in Examples 1 to 4 above were subjected to temperature measurements and durability evaluations by actual machine operation. For comparison, a similar test was also conducted on a valve guide section into which Fe12, which is usually used as a valve guide bushing, was press-fitted. Driving conditions are seoor
pm x total load, and the results are shown in the table below. Note that the amount of wear indicates the maximum value measured at the upper end or the lower end.
上記の記載から明らかな如く、本発明のシリンダヘッド
は性能面ではバルブガイド部の熱伝導性が良いためバル
ブガイド部の温度が低下し、バルブガイド部の高温強度
、耐摩耗性、耐蝕性等に余裕ができ、耐摩耗表面被覆材
料がより低グレードの安価な材料で済むか、または更に
高負荷に耐え、エンジンの高性能化が容易となる。As is clear from the above description, in terms of performance, the cylinder head of the present invention has good thermal conductivity in the valve guide part, which reduces the temperature of the valve guide part, and improves the high temperature strength, wear resistance, corrosion resistance, etc. of the valve guide part. This means that the wear-resistant surface coating material can be made of a lower grade and cheaper material, or it can withstand higher loads, making it easier to improve the performance of the engine.
またインテークパルプの熱がバルブガイド部を伝ってイ
ンテーク及び／またはエキゾーストパルプの温度が低下
し、該パルプの高温強度、硬度、耐摩耗性、耐蝕性等に
余裕ができ、バルブガイド部と同様に低コスト化すると
共に、パルプ径が大きく設計できるため大巾な性能向上
につながる。In addition, the heat of the intake pulp is transmitted through the valve guide section, lowering the temperature of the intake and/or exhaust pulp, which increases the high-temperature strength, hardness, abrasion resistance, corrosion resistance, etc. of the pulp. In addition to lowering costs, the pulp diameter can be designed to be larger, leading to significant performance improvements.
更にバルブガイド部周辺の材質ｂ−夛強化されたため、
バルブガイド部を含む肉厚を薄くすることができ、軽量
化につながるとともに、冷却水による冷却効果が高まり
、筒性能化が容易となるほか、冷却能力の余裕は冷却水
量の削減につながり、軽量化とウオーミングアツプ時間
の短縮効果に結びつくメリットを有する。Furthermore, the material around the valve guide part has been strengthened,
The wall thickness, including the valve guide part, can be made thinner, leading to weight reduction, and the cooling effect of the cooling water is increased, making it easier to improve cylinder performance.In addition, the extra cooling capacity leads to a reduction in the amount of cooling water, resulting in a lighter weight. This has the advantage of reducing heating and warming-up time.
次に製造面からはガイド部品材料の削減、ガイドフッシ
ュ打込みのためのシリンダヘッド下穴及びガイドブツシ
ュ単体の高精度加工の省略等、多くのメリットを生じ、
ガイドブツシュ圧入不良やゆるみによる脱落発生の心配
がない。Next, from a manufacturing perspective, there are many advantages such as reduction of guide component materials, elimination of high precision machining of the cylinder head prepared hole for driving the guide bushing and the guide bushing alone.
There is no need to worry about guide bushes falling off due to poor press-fit or loosening.
第１図は繊維成形体の斜視図を表わし、第２図は実施例
１によるシリンダヘッドの部分断面図を表わし、
第３図は実施例２によるシリンダヘッドの部分断面図を
表わし、
第４図は実施例３によるシリンダヘッドの部分断面図を
表わし、
第５図は従来のシリンダヘッドの部分断面図を表わす。
図中、
１・・・繊維成形体 ２・・・シリンダヘッド３・
・・ＦＲＭ ４・・・パルプステム５・・・
パルプヘッド ６ ＋＋＋ ／＜ルプシート７・・
・冷却水 ８・・・バルブガイド９・・・リテ
ーナ １ｏ・・・パルプスプリング１１−ＦＲＭ
１２・・・耐摩耗性被覆層特許出願人 ト
ヨタ自動車株式会社
第５図FIG. 1 shows a perspective view of a fiber molded body, FIG. 2 shows a partial cross-sectional view of a cylinder head according to Example 1, FIG. 3 shows a partial cross-sectional view of a cylinder head according to Example 2, and FIG. represents a partial sectional view of a cylinder head according to Example 3, and FIG. 5 represents a partial sectional view of a conventional cylinder head. In the figure, 1... Fiber molded body 2... Cylinder head 3.
...FRM 4...Pulp stem 5...
Pulp head 6 +++ /<Lup sheet 7...
・Cooling water 8... Valve guide 9... Retainer 1o... Pulp spring 11-FRM
12...Abrasion-resistant coating layer patent applicant Toyota Motor Corporation Figure 5
Claims (5)
ンダヘッドのバルブガイド部の上端部及び／または下端
部を繊維強化金属化したことを特徴とするバルブガイド
インサートレス軽合金シリンダヘッド。(1) A light alloy cylinder head without a valve guide insert, characterized in that the upper end and/or lower end of the valve guide part of the cylinder head made of aluminum alloy or magnesium alloy is made of fiber-reinforced metal.
維または金属繊維である特許請求の範囲第１項記載のシ
リンダヘッド。(2) The cylinder head according to claim 1, wherein the reinforcing fibers are ceramic fibers, carbon fibers, glass fibers, or metal fibers.
ンダヘッドのバルブガイド部の上端部及び／または下端
部を繊維強化金属化し、しかる後バルブステムとの当り
面部に耐摩耗性金属材料の被覆層を設けたことを特徴と
するバルブガイドインサートレス軽合金シリンダヘッド
。(3) The upper and/or lower ends of the valve guide part of the aluminum alloy or magnesium alloy cylinder head are made into fiber-reinforced metal, and then a coating layer of a wear-resistant metal material is provided on the contact surface with the valve stem. A light alloy cylinder head with no valve guide insert.
ネシウムを基材とする特許請求の範囲第３項記載のシリ
ンダヘッド。(4) The cylinder head according to claim 3, wherein the wear-resistant metal material is based on an aluminum alloy or magnesium.
のうちから選ばれる特許請求の範囲第３項記載のシリン
ダヘッド。(5) The cylinder head according to claim 3, wherein the wear-resistant metal material is selected from Fe-based, N2-based, and Cu-based alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028785A JPS61169606A (en) | 1985-01-23 | 1985-01-23 | Valve guide insertless light alloy cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028785A JPS61169606A (en) | 1985-01-23 | 1985-01-23 | Valve guide insertless light alloy cylinder head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61169606A true JPS61169606A (en) | 1986-07-31 |
| JPH0552402B2 JPH0552402B2 (en) | 1993-08-05 |
Family
ID=11746092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1028785A Granted JPS61169606A (en) | 1985-01-23 | 1985-01-23 | Valve guide insertless light alloy cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61169606A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59218317A (en) * | 1983-05-27 | 1984-12-08 | Toyota Motor Corp | Cylinder head for internal-combustion engine |
-
1985
- 1985-01-23 JP JP1028785A patent/JPS61169606A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59218317A (en) * | 1983-05-27 | 1984-12-08 | Toyota Motor Corp | Cylinder head for internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0552402B2 (en) | 1993-08-05 |
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