JPS6013957A - Cylinder block for internal-combustion engine - Google Patents
Cylinder block for internal-combustion engineInfo
- Publication number
- JPS6013957A JPS6013957A JP12056483A JP12056483A JPS6013957A JP S6013957 A JPS6013957 A JP S6013957A JP 12056483 A JP12056483 A JP 12056483A JP 12056483 A JP12056483 A JP 12056483A JP S6013957 A JPS6013957 A JP S6013957A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder block
- cylinders
- side wall
- ribs
- siamese
- 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
- 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
- F02F1/102—Attachment of cylinders to crankcase
-
- 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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】 （技術分野） 本発明は、内燃機関のシリンダブロックに関する。[Detailed description of the invention] (Technical field) The present invention relates to a cylinder block for an internal combustion engine.
（従来技術）
従来の内燃機関のシリンダプロ・ツクとしては、例えば
実開昭５６−７１９３６号公報に記載されたものがある
。このシリンダブロックを第１〜４図に基づき説明する
と、１は直列４気筒エンジンのシリンダブロックであり
、シリンダブロック１上部には４つの気筒２が形成され
ている。これらの気筒２の外方には該気筒２を取り囲む
ように側壁３が配設され、またこれらの気筒２間は隔壁
４で区切られている。このシリンダブロック１は第２図
にその気筒２に対向する側壁３ａ部の垂直断面を示すよ
うに、トップデツキ５の幅Ｌｔがロアデツキ６の幅Ｌツ
ノよりも小さく（Ｌｉ／〈Ｌｉ／）、断面がいわゆる台
形状をなしている。なお、ロアデツキ６の幅は異なるが
気筒２間の側壁３ｂ部も第３図に示すようにやはり台形
断面に形成されている。このように垂直断面を台形状に
形成することにより、エンジンの爆発による力やクラン
クシャフトの高速回転による慣性力に耐える剛性と強度
をシリンダブロック１に持たせ、横曲げ、縦曲げあるい
は振れ等による変形防止が図られている。(Prior Art) As a conventional cylinder control for an internal combustion engine, there is one described, for example, in Japanese Utility Model Application Publication No. 56-71936. This cylinder block will be explained based on FIGS. 1 to 4. Reference numeral 1 is a cylinder block of an in-line four-cylinder engine, and four cylinders 2 are formed in the upper part of the cylinder block 1. A side wall 3 is disposed on the outside of these cylinders 2 so as to surround the cylinders 2, and these cylinders 2 are separated by partition walls 4. As shown in FIG. 2, which shows a vertical cross section of the side wall 3a facing the cylinder 2, this cylinder block 1 has a width Lt of the top deck 5 smaller than a width L horn of the lower deck 6 (Li/<Li/), and the cross section has a so-called trapezoidal shape. Although the width of the lower deck 6 is different, the side wall 3b between the cylinders 2 is also formed to have a trapezoidal cross section as shown in FIG. By forming the vertical cross section into a trapezoidal shape in this way, the cylinder block 1 has the rigidity and strength to withstand the force caused by the explosion of the engine and the inertial force caused by the high-speed rotation of the crankshaft. Efforts are made to prevent deformation.
また、シリンダブロック１の側壁３内部には冷却水が通
過するウォータジャケット７が形成されており、ウォー
タジャケット７は第４図にそのロアデツキ６近傍の水平
断面を示すように気筒２間に位置するいわゆるサイアミ
ーズ部８において内方に曲折し、図中矢印で表示するよ
うに冷却水の流れを該サイアミーズ部８に導き、冷却効
果の低下を防止している。このウォータジャケット７を
形成している側壁３の気筒２部およびサイアミーズ部８
におけるそれぞれの垂直断面は前記第２．３図のように
示される。これらの図から明らかであるようにサイアミ
ーズ部８の側壁３６は気筒２に対向する側壁３ａより内
方に凹み、該サイアミーズ部８におけるロアデツキ６の
幅Ｌムは気筒２部のそれＬノ、よりも小さく、（ＬＪ！
ａ＜Ｌ）、）なっている。Further, a water jacket 7 through which cooling water passes is formed inside the side wall 3 of the cylinder block 1, and the water jacket 7 is located between the cylinders 2, as shown in FIG. 4, which shows a horizontal cross section near the lower deck 6. It is bent inward at a so-called Siamese portion 8, and the flow of cooling water is guided to the Siamese portion 8 as indicated by the arrow in the figure, thereby preventing a decrease in the cooling effect. The cylinder 2 part and the Siamese part 8 of the side wall 3 forming this water jacket 7
The respective vertical cross-sections are shown as in FIG. 2.3 above. As is clear from these figures, the side wall 36 of the Siamese section 8 is recessed inward from the side wall 3a facing the cylinder 2, and the width L of the lower deck 6 in the Siamese section 8 is larger than that of the cylinder 2 section. Also small (LJ!
a<L),).
しかしながら、このような従来の内燃機関のシリンダブ
ロック１にあっては、サイアミーズ部８の側壁３ｂが気
筒２に対向する側壁３ａより内方に凹むように形成され
ていたため、サイアミーズ部８の剛性や強度が十分でな
く、シリンダブロック１が変形するあるいは大きく振動
するという問題点があった。However, in the cylinder block 1 of such a conventional internal combustion engine, the side wall 3b of the Siamese portion 8 is formed to be recessed inward from the side wall 3a facing the cylinder 2, so the rigidity of the Siamese portion 8 is There was a problem that the strength was insufficient, and the cylinder block 1 was deformed or vibrated greatly.
（発明の目的）
そこで本発明は、サイアミーズ部の側壁に、ロアデツキ
近傍に配設され隣接する側壁同士を連結する第１の補強
リブと、この第１の補強リブを介してシリンダブロック
上部と下部とを連結する第２の補強リブと、を設けるこ
とにより、サイアミーズ部の剛性や強度を高め、シリン
ダブロックの変形を防止するとともに振動を低減するこ
とを目的としている。(Purpose of the Invention) Therefore, the present invention provides a first reinforcing rib that is disposed on the side wall of the Siamese portion near the lower deck and connects the adjacent side walls, and a first reinforcing rib that connects the upper and lower parts of the cylinder block to each other through the first reinforcing rib. By providing a second reinforcing rib that connects the cylinder block with the cylinder block, the purpose is to increase the rigidity and strength of the Siamese part, prevent deformation of the cylinder block, and reduce vibration.
（発明の構成）
本発明による内ＭＡＲ関のシリンダブロックは、複数の
気筒を有し、これらの気筒外方に配設された側壁が気筒
間において内方へ凹むように形成されている。そして、
上記内燃機関のシリンダブロックは前記気筒間の側壁に
、ロアデツキ近傍に配設され外方に突出して隣接する側
壁同士を連結する第１の補強リブと、外方に突出しこの
第１の補強リブを介してシリンダブロックの上部と下部
とを連結する第２の補強リブと、を設けることにより、
気筒間の側壁における剛性や強度を高めるものである。(Structure of the Invention) The cylinder block for the inner MAR according to the present invention has a plurality of cylinders, and the side walls disposed on the outside of these cylinders are formed so as to be recessed inward between the cylinders. and,
The cylinder block of the internal combustion engine has a first reinforcing rib provided on the side wall between the cylinders near the lower deck and protruding outward to connect adjacent side walls; By providing a second reinforcing rib that connects the upper and lower parts of the cylinder block through the cylinder block,
This increases the rigidity and strength of the side walls between the cylinders.
（実施例） 以下、本発明を図面に基づいて説明する。(Example) Hereinafter, the present invention will be explained based on the drawings.
第５〜７図は、本発明の一実施例を示す図であり、従来
とその構成が同一の部分には同一番号を付しその説明は
省略する。２１は従来同様に４つの気筒２を有するシリ
ンダブロックであり、このシリンダブロック２１におけ
るサイアミーズ部８のロアデツキ６の近傍には水平リブ
（第１の補強リブ）２２が設けられている。水平リブ２
２は外方に突出し隣接する側壁３ａ（すなわち、気筒２
に対向する側壁３ａ）同士を連結している。なお、水平
リブ２２はそれぞれのサイアミーズ部８、すなわち本実
施例のように直列４気筒エンジンであれば６つのサイア
ミーズ部８にすべて設けられる。これらの６つの水平リ
ブ２２の上方および下方にはそれぞれ外方に突出する上
側リブ詔および下側リブ２４が設けられており、上側リ
ブ詔はトップデツキ５と水平リブ２２とを連結し、また
下側リブ２４は水平リブ２２とスカート部５とを連結し
ている。これらの上側リブ詔および下側リブ２４は水平
リブ２２を介してシリンダブロック２１の上部と下部と
を連結する垂直リブ（第２の補強リブ）２６を構成して
おり、この垂直リブ２６はサイアミーズ部８の略中央部
の側壁３ｂ外方に略垂直方向に配設されている。5 to 7 are diagrams showing one embodiment of the present invention, and parts having the same configuration as the conventional one are given the same numbers and the explanation thereof will be omitted. Reference numeral 21 denotes a cylinder block having four cylinders 2 as in the conventional case, and a horizontal rib (first reinforcing rib) 22 is provided in the vicinity of the lower deck 6 of the Siamese portion 8 in this cylinder block 21. Horizontal rib 2
2 protrudes outward and adjacent side wall 3a (i.e. cylinder 2
The side walls 3a) facing each other are connected to each other. Note that the horizontal ribs 22 are provided in each Siamese portion 8, that is, in all six Siamese portions 8 in the case of an in-line four-cylinder engine as in this embodiment. Upper and lower ribs 24 are provided above and below these six horizontal ribs 22, respectively, and project outward. The upper ribs connect the top deck 5 and the horizontal ribs 22, and also connect the lower The side ribs 24 connect the horizontal ribs 22 and the skirt portion 5. These upper ribs and lower ribs 24 constitute a vertical rib (second reinforcing rib) 26 that connects the upper and lower parts of the cylinder block 21 via the horizontal rib 22. It is disposed approximately perpendicularly to the outside of the side wall 3b at approximately the center of the portion 8.
そして、これらの水平リブ２２および垂直リブ２６は一
体成形されており、この垂直リブ２６が配設されたサイ
アミーズ部８の垂直断面は第６図に、また水平リブ２２
近傍の水平断面は第７図にそれぞれ示される。これらの
図に示すように、水平リブ２２は隣接する側壁３ａと同
程度まで外方に突出しており、サイアミーズ部８におけ
るロアデツキ６０幅り、／４は隣接する側壁３ａにおけ
るロアデツキ６の幅ＬＪｅと同程度（Ｌ／ｅ ＝ Ｌｊ
２． ）となっている。These horizontal ribs 22 and vertical ribs 26 are integrally molded, and a vertical cross section of the Siamese portion 8 where the vertical ribs 26 are provided is shown in FIG.
Nearby horizontal sections are shown in FIG. 7, respectively. As shown in these figures, the horizontal rib 22 protrudes outward to the same extent as the adjacent side wall 3a, and the width of the lower deck 60 in the Siamese portion 8 is equal to /4, which is the width LJe of the lower deck 6 in the adjacent side wall 3a. Same level (L/e = Lj
2. ).
したがって、このようなシリンダプロ・ツク２１は水平
リブ２２と垂直リブ２６により曲げ、捩り等に対して剛
性が飛躍的に高められる。さらに、水平リブ２２および
垂直リブ２６を一体成形することにより、サイアミーズ
部８の強度を高めることができる。その結果、エンジン
の運転に対してシリンダブロック２１の変形を防止する
ことができるとともに、その振動も大幅に低減すること
ができる。Therefore, the horizontal ribs 22 and vertical ribs 26 dramatically increase the rigidity of the cylinder block 21 against bending, twisting, etc. Furthermore, by integrally molding the horizontal ribs 22 and the vertical ribs 26, the strength of the Siamese portion 8 can be increased. As a result, the cylinder block 21 can be prevented from deforming during engine operation, and its vibration can also be significantly reduced.
なお、本発明は直列４気筒エンジンに限らず直列６気筒
エンジンあるいはＶ型エンジン等他のエンジンに対して
も適用することができる。Note that the present invention is applicable not only to an in-line 4-cylinder engine but also to other engines such as an in-line 6-cylinder engine or a V-type engine.
（効果）
本発明によれば、気筒間の側壁に補強リブを設けること
により、気筒間の側壁における剛性や強度を高めること
ができ、シリンダブロックの変形を防止することができ
るとともに、振動を大幅に低減することができる。(Effects) According to the present invention, by providing reinforcing ribs on the side walls between the cylinders, it is possible to increase the rigidity and strength of the side walls between the cylinders, prevent deformation of the cylinder block, and significantly reduce vibration. can be reduced to
第１〜４図は従来の内燃機関のシリンダブロックを示す
図であり、第１図はその一部斜視図、第２図は第１図の
ｎ−ｎ矢視断面図、第３図は第１図のｍ−ｍ矢視断面図
、第４図は第３図のＩＶ−ＩＶ矢視方向における全体平
面断面図、第５〜７図は本発明の一実施例を示す図であ
り、第５図はその一部斜視図、第６図は第５図の■−■
矢視断面図、第７図は第６図の■−■矢視矢視定向ける
全体平面断面図である。
２−−−−・−気筒、
３−・−側壁、
３ｂ−−−−一・気筒間の側壁、
６−・・−ロアデツキ、
２１−・−一一一シリンダブロック・
２２−−−−一水平リプ（第１の補強リブ）、２６−−
−−−一垂直リブ（第２の補強リブ）。
特許出願人 日産自動車株式会社
代理人弁理士 有我軍一部
第１図
第２図
第３図
第４図
第５図
第６図1 to 4 are diagrams showing a cylinder block of a conventional internal combustion engine, in which FIG. 1 is a partial perspective view, FIG. 1 is a cross-sectional view taken along line mm in FIG. Figure 5 is a partial perspective view, and Figure 6 is a partial perspective view of Figure 5.
7 is an overall plan sectional view taken along the line 1--2 in FIG. 6. 2-----Cylinder, 3--Side wall, 3b--1 Side wall between cylinders, 6--Lower deck, 21--111 cylinder block, 22---1 Horizontal rib (first reinforcing rib), 26--
---One vertical rib (second reinforcing rib). Patent Applicant Nissan Motor Co., Ltd. Representative Patent Attorney Yugagun Part Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
が気筒間において内方へ凹むように形成された内燃機関
のシリンダブロックにおいて、前記気筒間の側壁に、ロ
アデツキ近傍に配設され外方に突出して隣接する側壁同
士を連結する第１の補強リブと、外方に突出しこの第１
の補強リブを介してシリンダブロックの上部と下部とを
連結する第２の補強リブと、を設けたことを特徴とする
内燃機関のシリンダブロック。In a cylinder block for an internal combustion engine that has a plurality of cylinders and is formed such that a side wall disposed on the outside of these cylinders is recessed inward between the cylinders, the cylinder block is disposed on the side wall between the cylinders near the lower deck. a first reinforcing rib that protrudes outward and connects adjacent side walls;
A cylinder block for an internal combustion engine, comprising: a second reinforcing rib that connects the upper and lower parts of the cylinder block via the reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12056483A JPS6013957A (en) | 1983-07-01 | 1983-07-01 | Cylinder block for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12056483A JPS6013957A (en) | 1983-07-01 | 1983-07-01 | Cylinder block for internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6013957A true JPS6013957A (en) | 1985-01-24 |
Family
ID=14789425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12056483A Pending JPS6013957A (en) | 1983-07-01 | 1983-07-01 | Cylinder block for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013957A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61132466U (en) * | 1985-02-07 | 1986-08-19 | ||
| US4911109A (en) * | 1987-07-11 | 1990-03-27 | Isuzu Motors Limited | Cooling system for heat insulating engine |
| JPH0296059U (en) * | 1989-01-20 | 1990-07-31 | ||
| US5501189A (en) * | 1992-09-18 | 1996-03-26 | Eisenwerk Bruehl Gmbh | Cylinder block for an internal combustion engine |
| KR20040029521A (en) * | 2002-10-01 | 2004-04-08 | 현대자동차주식회사 | A cylinder block in engine |
| KR100589162B1 (en) * | 2003-12-17 | 2006-06-12 | 현대자동차주식회사 | water jacket structure of a cylinder head |
| JP2006250088A (en) * | 2005-03-11 | 2006-09-21 | Toyota Motor Corp | V-shaped cylinder block for engine |
-
1983
- 1983-07-01 JP JP12056483A patent/JPS6013957A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61132466U (en) * | 1985-02-07 | 1986-08-19 | ||
| US4911109A (en) * | 1987-07-11 | 1990-03-27 | Isuzu Motors Limited | Cooling system for heat insulating engine |
| JPH0296059U (en) * | 1989-01-20 | 1990-07-31 | ||
| US5501189A (en) * | 1992-09-18 | 1996-03-26 | Eisenwerk Bruehl Gmbh | Cylinder block for an internal combustion engine |
| KR20040029521A (en) * | 2002-10-01 | 2004-04-08 | 현대자동차주식회사 | A cylinder block in engine |
| KR100589162B1 (en) * | 2003-12-17 | 2006-06-12 | 현대자동차주식회사 | water jacket structure of a cylinder head |
| JP2006250088A (en) * | 2005-03-11 | 2006-09-21 | Toyota Motor Corp | V-shaped cylinder block for engine |
| JP4506517B2 (en) * | 2005-03-11 | 2010-07-21 | トヨタ自動車株式会社 | Engine V-type cylinder block |
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