JPS60142036A - Cylinder head for four-cycle engine - Google Patents
Cylinder head for four-cycle engineInfo
- Publication number
- JPS60142036A JPS60142036A JP24879483A JP24879483A JPS60142036A JP S60142036 A JPS60142036 A JP S60142036A JP 24879483 A JP24879483 A JP 24879483A JP 24879483 A JP24879483 A JP 24879483A JP S60142036 A JPS60142036 A JP S60142036A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- mold
- cooling water
- intake
- metal
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はダイカスト鋳造により作られる水冷式４ザイク
ルエンジン用の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 a water-cooled four-cycle engine manufactured by die casting.
（従来技術）
従来の水冷４サイクルエンジンのシリンダヘッドは１通
常セラミックシェル鋳造あるいは金型鋳造で外形を作り
、吸・排気通路や冷却水通路部分はセラミックシェルや
砂型による中子を用いて成形していた。このため中子の
製作、中子の固定。(Prior art) The external shape of the cylinder head of a conventional water-cooled 4-stroke engine is usually made by ceramic shell casting or metal mold casting, and the intake/exhaust passages and cooling water passages are formed using a ceramic shell or sand mold core. was. For this purpose, the core is manufactured and the core is fixed.
中子の砂ばらし、またセラミックシェル鋳造の場合はシ
ェル鋳型の製作、その砂ばらし等、製造工程が非常に多
く、生理性が悪いという問題があった。There are many manufacturing steps, such as sanding the core, and in the case of ceramic shell casting, making a shell mold and sanding it, and there is a problem in that the physiological properties are poor.
（発明の目的） 本発明はこのような事情に鑑みなされたもので。(Purpose of the invention) The present invention was made in view of these circumstances.
吸・排気通路や冷却水通路をセラミックシェルや砂型の
中子を用いることなく成形でき、製作が極めて容易で生
産性に優れた４サイクルエンジンのシリンダ５ツドを提
供することを目的とする。To provide a 5-cylinder cylinder for a 4-cycle engine which can form intake/exhaust passages and cooling water passages without using a ceramic shell or a sand mold core, is extremely easy to manufacture, and has excellent productivity.
（発明の構成）
本発明はこの目的達成のため、シリンダヘッドをダイカ
ストｍ造可能にした。すなわち。(Structure of the Invention) In order to achieve this object, the present invention enables the cylinder head to be manufactured by die casting. Namely.
吸・排気通路が形成された水冷４ザイクルエンジンのシ
リンダヘッドにおいて、ダイカスト調造によって作られ
、前記吸・排気通路は燃焼室側へ抜かれるポート部金型
と側方へ抜かれる吸・排気通路部金型とをつき合わせた
型により、また冷却水通路は燃焼室側およびシリンダヘ
ッドカバー側へ抜かれる型により、それぞれ形成される
ように構成した。In a cylinder head of a water-cooled 4-cycle engine in which an intake/exhaust passage is formed, the intake/exhaust passage is made by die-casting, and the intake/exhaust passage has a mold for a port part that is pulled out to the combustion chamber side, and an intake/exhaust passage that is pulled out to the side. The cooling water passage was formed by a mold that matched the part mold, and by a mold that was drawn out toward the combustion chamber side and the cylinder head cover side.
（実施例） 以下図面に基づき１本発明を詳＋＋＋田に説明する。(Example) The present invention will be explained in detail below based on the drawings.
第１図は本発明の一実施例であるシリンダヘッドおよび
シリンダヘッドカバーの断面図、第２図はそのシリンダ
ヘッドの金型な一部断面して示す正面図、第３図は吸・
排気通路の金型の平面図。Fig. 1 is a sectional view of a cylinder head and cylinder head cover according to an embodiment of the present invention, Fig. 2 is a partially sectional front view of the mold of the cylinder head, and Fig. 3 is a suction/cylinder head cover.
A plan view of a mold for an exhaust passage.
第４図は金型の分解斜視図、また第５，６図は機械加工
後のシリンダヘッドの平面図と底面図である。FIG. 4 is an exploded perspective view of the mold, and FIGS. 5 and 6 are a plan view and a bottom view of the cylinder head after machining.
第２．３図で符号１０はシリンダヘッド、１２゜１４は
吸・排気通路部金型、、１６．１８はボート部金型であ
る。吸・排気通路部金型１２．１４は。In Fig. 2.3, the reference numeral 10 is the cylinder head, 12.14 is the mold for the intake/exhaust passage, and 16.18 is the mold for the boat part. Suction/exhaust passage mold 12.14.
左右外側面の割金型Ａ、Ｂと一体にｓｌ、２．３図で左
側および右側へ引き抜き可能に作られる。sl is made integrally with split molds A and B on the left and right outer surfaces, and can be pulled out to the left and right as shown in Figure 2.3.
すなわち吸・排気通路部会Ｗ１２，１４は、略円錐状に
作られている。ポート部金型１６．１８は下側（燃焼室
側）の割金型Ｃと一体で、下方へ引き抜き可能となって
いる。第２因で２０は冷却水通踏部金型であってポート
部会Ｗ１６，１．８と同様に下側の割金型Ｃと一体であ
る。この金型２０は環状に作られていて第６図に示す環
状の冷却水通路２２を形成すると共に、この金型２０に
は４本の突起２４（第２，４図参照）が上方に突設され
ティる。第２図で２６（２６ａ、２６ｂ）は上側（シリ
ンダヘッドカバー３０側）の割金型りと一体の冷却水通
踏部金型であって、冷却水通路２７（２７ａ、２７ｂ）
を形成するものである。各金型２６ ａ＋ ２６ ｂに
は下方に突出する突起３２がそれぞれ２本づつ突設され
、各突起３２は前記下側の冷却水通踏部金型２０の各突
起２４とつき合わされて、冷却水通路３４ （第１図）
を形成するものである。また３５ａ、３５ｂは、上の割
金型りと一体のバルブガイド部金型である。That is, the intake/exhaust passage sections W12, 14 are formed into a substantially conical shape. The port molds 16 and 18 are integrated with the split mold C on the lower side (combustion chamber side) and can be pulled out downward. The second factor is a cooling water passage mold 20, which is integrated with the lower split mold C similarly to the port parts W16 and 1.8. This mold 20 is made in an annular shape and forms an annular cooling water passage 22 shown in FIG. 6, and has four protrusions 24 (see FIGS. 2 and 4) projecting upward. It is set up. In FIG. 2, 26 (26a, 26b) is a cooling water passage mold that is integrated with the split mold on the upper side (cylinder head cover 30 side), and is connected to the cooling water passage 27 (27a, 27b).
It forms the Each of the molds 26 a + 26 b is provided with two protrusions 32 that protrude downward, and each of the protrusions 32 is brought into contact with each protrusion 24 of the lower cooling water passage mold 20 to prevent cooling. Water passage 34 (Fig. 1)
It forms the Further, 35a and 35b are valve guide molds that are integrated with the upper split mold.
シリンダーラド１０の外側の割金型Ａ、 Ｂ、 Ｃ，Ｄ
をそれぞれ組合わせた状態では、前記吸・排気通路部金
型１２．１４の先端下面に、ポート部金型１６゜１８が
つき合ｉ−！され、また各冷却水通路部金壓加。Split molds A, B, C, D on the outside of the cylinder rad 10
When these are combined, the port mold 16°18 is brought into contact with the bottom surface of the tip of the intake/exhaust passage mold 12.14. In addition, each cooling water passage section is fitted with gold.
２６の各突起２４．３２がつき合わされる。この状態で
金型内に萬圧の溶融金属が注入されてダイカスト鋳造さ
れる。各割金型をそれぞれの方向に抜いて型ばらしした
後１機械加工を行う。すなわちボート部金型１６．１８
を抜いた空胴の内面を切削加工すると共に、バルブガイ
ド部会壓３５ａ。The 26 protrusions 24, 32 are brought into contact. In this state, ten thousand pounds of molten metal is injected into the mold and die casting is performed. After each split mold is punched out in each direction to separate the molds, one machining process is performed. In other words, boat part mold 16.18
The inner surface of the cavity from which the hole was removed is cut, and the valve guide section 35a is cut.
３５ｂ’＆抜いた空胴の内面にバルブガイド孔３６゜３
６を切削加工し、バルブシート３８．３８およびバルブ
ガイド４．０．４０を圧入する（第１図）。35b'& Valve guide hole 36°3 on the inner surface of the hollow cavity
6, and press-fit the valve seat 38.38 and valve guide 4.0.40 (Fig. 1).
この結果第１図に示す吸・排気通路４２，４．４が形成
される。また点火栓取付孔４６等適宜の他の機械加工も
施す（第４，５図）。As a result, the intake/exhaust passages 42, 4.4 shown in FIG. 1 are formed. In addition, other appropriate machining such as the spark plug mounting hole 46 is also performed (FIGS. 4 and 5).
なお本実施例では、吸気通路部金型１２の先端の一側面
がｆ［めに切欠かれている（り１３図）。この切欠き面
ａはバルブガイド孔３６の外周にほぼ外接する傾きを持
っている。この結果この切欠き面ａが形成１−る吸気通
路４２の内面が、吸気に回転運！ｌ！ｌＩヲ与え、吸気
に強いスワールを発生させて燃焼を促進する。この切欠
き而ａに代えて、またはこの切欠き面ａｆ設けると共に
、吸気通路部金型１２の中心線すをポート部会屋１６の
中心に対し偏心させることにより、スワールを発生させ
てもよい。In this embodiment, one side surface of the tip of the intake passage mold 12 is cut out at an angle f (see Fig. 13). This notch surface a has an inclination that substantially circumscribes the outer periphery of the valve guide hole 36. As a result, the inner surface of the intake passage 42 formed by this notch surface a is rotated by the intake air! l! It gives lI and generates a strong swirl in the intake air to promote combustion. Instead of this notch a, or in addition to providing this notch surface a, swirl may be generated by making the center line of the intake passage mold 12 eccentric to the center of the port chamber 16.
な計第１図で４６はシリンダヘッドカバー３０に形成さ
れた冷却水通路、第５，６図で４８．５０は吸・排気弁
（図示せず）を駆動するブツシュロッド（図示せず）の
挿通孔であり、この金型も上の割金型りに一体に形成さ
れる。また第５．６図の各種のボルト孔に対応する金型
も上下割金型Ｃ１Ｄに適宜形成しておく。In Figure 1, 46 is a cooling water passage formed in the cylinder head cover 30, and in Figures 5 and 6, 48.50 is an insertion hole for a bushing rod (not shown) that drives the intake/exhaust valve (not shown). This mold is also formed integrally with the upper split mold. Further, molds corresponding to the various bolt holes shown in FIG. 5.6 are also appropriately formed in the upper and lower split mold C1D.
（発明の効果）
本発明は以上のように吸・排気通路および冷却水通路を
成形する金型な、シリンダヘッド外壁を成形する割金型
と一体（二作り、この割金型の型割り方向に吸・排気通
路および冷却水通路の金型を型抜き可能とした。このた
めシリンダヘッドのダイカスト鋳造化が可能になり、製
造工程が非常に単純になる。この結果、生産性２高める
ことができる。(Effects of the Invention) As described above, the present invention is integrated with a split mold for forming the outer wall of the cylinder head, which is a mold for forming the intake/exhaust passages and the cooling water passage. The molds for the intake/exhaust passages and cooling water passages can now be cut out.This makes it possible to die-cast the cylinder head, making the manufacturing process extremely simple.As a result, productivity can be increased by 2. can.
第１図は本発明の一実施例であるシリンダヘッドとシリ
ンダヘッドカバーの断面図、第２図はそ千
９．６
第←戸ε図は機械加工後のシリンダヘッドの平面図と底
面図である。
１０ ・シリンダヘッド。
１２．１４・・・吸・排気通路部金壓。
１６、−１．８・・・ポート部会屋。
２０．２．６・・冷却水通踏部金型。
２２．２７．３４・・・冷却水通路。
３０ シリンダヘッドカバー。
４２．４４・・・吸・排気通路。
特許出願人 小型ガス冷房技術研究組合代理人 弁理士
山 １） 文 雄Figure 1 is a sectional view of a cylinder head and cylinder head cover that is an embodiment of the present invention, and Figure 2 is a top view and bottom view of the cylinder head after machining. . 10 ・Cylinder head. 12.14... Suction/exhaust passage section metal bottle. 16, -1.8... Port room. 20.2.6・Cooling water passage mold. 22.27.34...Cooling water passage. 30 Cylinder head cover. 42.44...Intake/exhaust passage. Patent applicant: Small Gas Cooling Technology Research Association Representative, Patent Attorney: Yama 1) Yu Moon
Claims (1)
リンダヘッドにおいて、ダイカスト鋳造によって作られ
、前記吸・排気通路は燃焼室側へ抜かれるボート部金型
と・一方へ抜かれる吸・排気通路部金型とをつき合わせ
た型により、また冷却水通路は燃焼室側およびシリンダ
ヘッドカバー側へ抜かれる型により、それぞれ形成され
たことを特徴とする４ザイクルエンジンのシリンダヘッ
ド。In a cylinder head of a water-cooled 4-stroke engine in which an intake/exhaust passage is formed, the intake/exhaust passage is made by die-casting, and the intake/exhaust passage has a boat part mold that is pulled out to the combustion chamber side, and an intake/exhaust passage part that is pulled out to one side. A cylinder head for a four-cycle engine, characterized in that a cooling water passage is formed by a mold that is brought into contact with a mold, and a cooling water passage is formed by a mold that is drawn out to the combustion chamber side and the cylinder head cover side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24879483A JPS60142036A (en) | 1983-12-29 | 1983-12-29 | Cylinder head for four-cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24879483A JPS60142036A (en) | 1983-12-29 | 1983-12-29 | Cylinder head for four-cycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60142036A true JPS60142036A (en) | 1985-07-27 |
Family
ID=17183492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24879483A Pending JPS60142036A (en) | 1983-12-29 | 1983-12-29 | Cylinder head for four-cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60142036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008090903A1 (en) * | 2007-01-25 | 2008-07-31 | Daihatsu Motor Co., Ltd. | Cylinder head |
| KR20200124604A (en) | 2019-04-24 | 2020-11-03 | 캐논 가부시끼가이샤 | Substrate holding apparatus, lithography apparatus, and article manufacturing method |
-
1983
- 1983-12-29 JP JP24879483A patent/JPS60142036A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008090903A1 (en) * | 2007-01-25 | 2008-07-31 | Daihatsu Motor Co., Ltd. | Cylinder head |
| KR20200124604A (en) | 2019-04-24 | 2020-11-03 | 캐논 가부시끼가이샤 | Substrate holding apparatus, lithography apparatus, and article manufacturing method |
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