JPH10323745A - Casting of cylinder block - Google Patents

Casting of cylinder block

Info

Publication number
JPH10323745A
JPH10323745A JP15035797A JP15035797A JPH10323745A JP H10323745 A JPH10323745 A JP H10323745A JP 15035797 A JP15035797 A JP 15035797A JP 15035797 A JP15035797 A JP 15035797A JP H10323745 A JPH10323745 A JP H10323745A
Authority
JP
Japan
Prior art keywords
cylinder block
glass material
sand core
cooling water
casting
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
Application number
JP15035797A
Other languages
Japanese (ja)
Inventor
Takashige Kimura
隆茂 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Techno Metal Co Ltd
Original Assignee
Mitsubishi Motors Corp
Techno Metal Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp, Techno Metal Co Ltd filed Critical Mitsubishi Motors Corp
Priority to JP15035797A priority Critical patent/JPH10323745A/en
Publication of JPH10323745A publication Critical patent/JPH10323745A/en
Pending legal-status Critical Current

Links

Classifications

    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To easily form cooling water passages by casting, inside wall faces between cylinders in a Siamese cylinder block. SOLUTION: A sand core 12 with both side parts 10, 11, which correspond to the cooling water passages 3, 4 in the Siamese cylinder block, is formed. The both ends of a heat resistance glass material 13 such as qualtz glass and the like are embedded at a position corresponding to an inside of the cylinder wall faces 2, and the both side parts 10, 11 are connected with the heat registance glass material to form the sand core 12. After casting the cylinder block by using the sand core 12, the heat resistance glass material 13 is removed from the castings by a method of shot blast, exciting vibration or the like.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、隣接するシリンダ
の壁面が一体化された、いわゆるサイアミーズシリンダ
ブロックの鋳造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for casting a so-called siamese cylinder block in which wall surfaces of adjacent cylinders are integrated.

【０００２】[0002]

【従来の技術】従来のサイアミーズシリンダブロックに
おいては、隣接するシリンダの壁面が一体化されて冷却
水の通路面積を確保しにくいため、各シリンダの冷却に
工夫を要するが、上記壁面が比較的薄いために、この壁
面に砂中子で冷却水通路を形成することは砂中子の強度
上きわめて困難であり、従って、壁面における冷却水通
路の形成は鋳造後の機械加工に頼らざるをえず、この場
合には、シリンダブロックの製造工数が増大する不具合
があった。2. Description of the Related Art In a conventional siamese cylinder block, it is difficult to secure the passage area of cooling water by integrating the wall surfaces of adjacent cylinders. Therefore, it is extremely difficult to form a cooling water passage on the wall with a sand core due to the strength of the sand core. Therefore, the formation of the cooling water passage on the wall must rely on machining after casting. In this case, however, there is a problem that the number of man-hours for manufacturing the cylinder block increases.

【０００３】[0003]

【発明が解決しようとする課題】本発明は、サイアミー
ズシリンダブロックにおけるシリンダ間の壁面内に、冷
却水通路を鋳造により容易に成形できるようにしようと
するものである。SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily form a cooling water passage in a wall surface between cylinders in a siamese cylinder block by casting.

【０００４】[0004]

【課題を解決するための手段】このため、本発明にかか
るシリンダブロック鋳造法は、軸心がそれぞれ平行で上
記軸心と直角方向へ直線的に配置されたシリンダ列の両
側における冷却水通路に相当する外形をそなえた砂中子
であって、隣接する上記シリンダ間の共通壁面内に相当
する位置で上記シリンダ列の両側部分が耐熱性ガラス材
により連結されたものを造型し、上記砂中子を使用して
シリンダブロックを鋳造した後、上記耐熱性ガラス材を
除去する。For this reason, the cylinder block casting method according to the present invention provides a cooling water passage on both sides of a cylinder row whose axes are parallel to each other and are linearly arranged in a direction perpendicular to the axis. A sand core having a corresponding outer shape, in which both sides of the cylinder row are connected by a heat-resistant glass material at a position corresponding to a common wall surface between the adjacent cylinders, and the sand core is formed. After the cylinder block is cast using a child, the heat-resistant glass material is removed.

【０００５】従って、上記砂中子を使用してシリンダブ
ロックを鋳造した後、砂中子における耐熱性ガラス材を
ショットブラスト、加振等の手法によって適宜除去すれ
ば、シリンダブロックにおけるシリンダ列両側の冷却水
通路が耐熱性ガラス材に相当する壁面内の部分で連通さ
れることとなるので、隣接するシリンダ間の一体化され
た壁面が薄くても、耐熱性ガラス材の形状を適宜選定す
ることによって、上記両側の冷却水通路に対する連通路
を鋳造により容易に成形させることが可能となる。[0005] Therefore, after the cylinder block is cast using the above-mentioned sand core, if the heat-resistant glass material in the sand core is appropriately removed by a method such as shot blasting or vibration, the both sides of the cylinder row in the cylinder block can be obtained. Since the cooling water passage is communicated with the portion inside the wall surface corresponding to the heat-resistant glass material, even if the integrated wall surface between adjacent cylinders is thin, the shape of the heat-resistant glass material should be appropriately selected. This makes it possible to easily form the communication passages for the cooling water passages on both sides by casting.

【０００６】[0006]

【発明の実施の形態】以下、本発明の実施形態例につい
て説明する。図１に示されているように、軸心がそれぞ
れ平行でその軸心と直角方向へ直線的に各シリンダ１が
配置され、隣接するシリンダ１間の壁面２がそれぞれ一
体化されると共に、それらシリンダ列の両側にそれぞれ
冷却水通路３、４が形成されたシリンダブロック５を鋳
造するため、図２に示されているように、冷却水通路
３、４にそれぞれ相当する両側部分１０、１１をそなえ
た砂中子１２が造型され、シリンダ壁面２内に相当する
位置で、砂中子１２の両側部分１０、１１に石英ガラス
等の耐熱性ガラス材１３の両端がそれぞれ埋め込まれ、
上記両側部分１０、１１が耐熱性ガラス材１３により連
結されて、砂中子１２が形成されている。Embodiments of the present invention will be described below. As shown in FIG. 1, each cylinder 1 is arranged linearly in a direction perpendicular to the axis and parallel to the axis, and the wall surfaces 2 between adjacent cylinders 1 are integrated with each other. In order to cast a cylinder block 5 in which cooling water passages 3 and 4 are formed on both sides of the cylinder row, as shown in FIG. The prepared sand core 12 is formed, and both ends of a heat-resistant glass material 13 such as quartz glass are embedded in both side portions 10 and 11 of the sand core 12 at positions corresponding to the inside of the cylinder wall surface 2, respectively.
The two side portions 10 and 11 are connected by a heat-resistant glass material 13 to form a sand core 12.

【０００７】耐熱性ガラス材１３は、図３（Ａ）、
（Ｂ）、（Ｃ）、（Ｄ）にそれぞれ例示されているよう
に、板状、丸棒状、チューブ状、あるいは、中実棒状を
していて、上下に少し傾斜するように配置されている。The heat-resistant glass material 13 is shown in FIG.
As illustrated in (B), (C), and (D), each has a plate shape, a round bar shape, a tube shape, or a solid bar shape, and is arranged so as to be slightly inclined up and down. .

【０００８】次に、上記砂中子１２を使用してシリンダ
ブロック５を鋳造した後、砂中子１２における耐熱性ガ
ラス材１３をショットブラスト、加振等の手法によって
適宜除去すれば、シリンダブロック５におけるシリンダ
列両側の冷却水通路３、４が、耐熱性ガラス材１３に相
当する壁面２内の通路６で連通されることとなるので、
隣接するシリンダ１間の一体化された壁面２が薄くて
も、耐熱性ガラス材１３の形状を適宜選定することによ
り、シリンダ列両側の冷却水通路３、４に対する壁面２
内の通路６を鋳造により容易に成形させることができる
こととなる。Next, after casting the cylinder block 5 using the sand core 12, the heat-resistant glass material 13 in the sand core 12 is appropriately removed by a method such as shot blasting or vibration. 5, the cooling water passages 3 and 4 on both sides of the cylinder row are communicated with the passage 6 in the wall surface 2 corresponding to the heat-resistant glass material 13.
Even if the integrated wall 2 between the adjacent cylinders 1 is thin, by appropriately selecting the shape of the heat-resistant glass material 13, the wall 2 for the cooling water passages 3 and 4 on both sides of the cylinder row can be formed.
The inner passage 6 can be easily formed by casting.

【０００９】また、通路６の上下傾斜によって冷却水の
温度差等による冷却水通路３、４間の流動を良好とし、
シリンダブロック５の冷却性能を向上させることができ
るが、壁面２内における通路６の上下傾斜は耐熱性ガラ
ス材１３の傾斜配置により簡単、かつ、自由に設定する
ことが可能であって、機械加工では壁面２内に傾斜した
通路６を成形しにくい場合であっても、傾斜した通路６
を容易に成形させることができる。The flow between the cooling water passages 3 and 4 due to the temperature difference of the cooling water and the like is improved by the vertical inclination of the passage 6,
Although the cooling performance of the cylinder block 5 can be improved, the vertical inclination of the passage 6 in the wall surface 2 can be easily and freely set by the inclined arrangement of the heat-resistant glass material 13, so that machining can be performed. Therefore, even if it is difficult to form the inclined passage 6 in the wall surface 2, the inclined passage 6
Can be easily formed.

【００１０】従って、冷却水通路３、４を連通する通路
６の形成により、冷却水による各シリンダ１の冷却効果
を向上させることができて、エンジン性能を確実に高め
ることが可能となり、また、シリンダブロック５の鋳造
後に通路６を形成するための機械加工も不要となるた
め、シリンダブロック５の製造工数を簡単に低減させる
ことができる長所がある。Therefore, by forming the passage 6 communicating the cooling water passages 3 and 4, the cooling effect of each cylinder 1 by the cooling water can be improved, and the engine performance can be surely enhanced. Since machining for forming the passage 6 after casting of the cylinder block 5 is not required, there is an advantage that the number of manufacturing steps of the cylinder block 5 can be easily reduced.

【００１１】[0011]

【発明の効果】本発明のシリンダブロック鋳造法によれ
ば、シリンダ列の両側における冷却水通路に相当する外
形をそなえ、隣接するシリンダ間の共通壁面内に相当す
る位置でシリンダ列の両側部分が耐熱性ガラス材により
連結された砂中子を使用してシリンダブロックを鋳造
し、その後、耐熱性ガラス材を除去すれば、シリンダブ
ロックにおけるシリンダ列両側の冷却水通路が耐熱性ガ
ラス材に相当する壁面内の部分で自動的に形成されるこ
ととなるので、冷却性能の良好なシリンダブロックを比
較的少ない工数で簡単に製造することができる利点があ
る。According to the cylinder block casting method of the present invention, the outer shape corresponding to the cooling water passage on both sides of the cylinder row is provided, and both side portions of the cylinder row are located at positions corresponding to the common wall surface between adjacent cylinders. If a cylinder block is cast using a sand core connected by a heat-resistant glass material, and then the heat-resistant glass material is removed, the cooling water passages on both sides of the cylinder row in the cylinder block correspond to the heat-resistant glass material. Since the cylinder block is automatically formed at the portion inside the wall, there is an advantage that a cylinder block having good cooling performance can be easily manufactured with relatively few man-hours.

【図面の簡単な説明】[Brief description of the drawings]

【図１】シリンダブロックの概略上面図。FIG. 1 is a schematic top view of a cylinder block.

【図２】本発明の実施形態例における中子の上面図。FIG. 2 is a top view of a core according to the embodiment of the present invention.

【図３】上記実施形態例に要部斜視図。FIG. 3 is a perspective view of a main part of the embodiment.

【符号の説明】[Explanation of symbols]

１ シリンダ ２ 壁面 ３、４ 冷却水通路 ５ シリンダブロック ６ 通路 １２ 砂中子 １３ 耐熱性ガラス材 Reference Signs List 1 cylinder 2 wall surface 3, 4 cooling water passage 5 cylinder block 6 passage 12 sand core 13 heat-resistant glass material

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 軸心がそれぞれ平行で上記軸心と直角方
向へ直線的に配置されたシリンダ列の両側における冷却
水通路に相当する外形をそなえた砂中子であって、隣接
する上記シリンダ間の共通壁面内に相当する位置で上記
シリンダ列の両側部分が耐熱性ガラス材により連結され
たものを造型し、上記砂中子を使用してシリンダブロッ
クを鋳造した後、上記耐熱性ガラス材を除去するシリン
ダブロック鋳造法。1. A sand core having an outer shape corresponding to a cooling water passage on both sides of a cylinder row whose axes are parallel to each other and are linearly arranged in a direction perpendicular to the axis. After molding both sides of the cylinder row connected by a heat-resistant glass material at a position corresponding to the inside of the common wall surface, and casting a cylinder block using the sand core, the heat-resistant glass material Remove cylinder block casting method.
JP15035797A 1997-05-23 1997-05-23 Casting of cylinder block Pending JPH10323745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15035797A JPH10323745A (en) 1997-05-23 1997-05-23 Casting of cylinder block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15035797A JPH10323745A (en) 1997-05-23 1997-05-23 Casting of cylinder block

Publications (1)

Publication Number Publication Date
JPH10323745A true JPH10323745A (en) 1998-12-08

Family

ID=15495228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15035797A Pending JPH10323745A (en) 1997-05-23 1997-05-23 Casting of cylinder block

Country Status (1)

Country Link
JP (1) JPH10323745A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030096578A (en) * 2002-06-14 2003-12-31 현대자동차주식회사 water jacket core of vehicle
CN113838058A (en) * 2021-10-11 2021-12-24 重庆邮电大学 Automatic medical image labeling method and system based on small sample segmentation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030096578A (en) * 2002-06-14 2003-12-31 현대자동차주식회사 water jacket core of vehicle
CN113838058A (en) * 2021-10-11 2021-12-24 重庆邮电大学 Automatic medical image labeling method and system based on small sample segmentation
CN113838058B (en) * 2021-10-11 2024-03-19 重庆邮电大学 Automatic medical image labeling method and system based on small sample segmentation

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