JPH0146704B2 - - Google Patents

Info

Publication number
JPH0146704B2
JPH0146704B2 JP23623384A JP23623384A JPH0146704B2 JP H0146704 B2 JPH0146704 B2 JP H0146704B2 JP 23623384 A JP23623384 A JP 23623384A JP 23623384 A JP23623384 A JP 23623384A JP H0146704 B2 JPH0146704 B2 JP H0146704B2
Authority
JP
Japan
Prior art keywords
cylinder
siamese
barrel
bore
wall
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.)
Expired
Application number
JP23623384A
Other languages
Japanese (ja)
Other versions
JPS61116052A (en
Inventor
Shizuo Ebisawa
Tetsuya Suzuki
Shigeo Kaiho
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP23623384A priority Critical patent/JPS61116052A/en
Publication of JPS61116052A publication Critical patent/JPS61116052A/en
Publication of JPH0146704B2 publication Critical patent/JPH0146704B2/ja
Granted 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
    • 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
    • F02B2075/1824—Number of cylinders six

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)

Description

【発明の詳細な説明】 Ａ 発明の目的 (1) 産業上の利用分野 本発明はエンジンに用いられるサイアミーズ型
シリンダブロツクに関する。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a Siamese type cylinder block used in an engine.

(2) 従来の技術 従来、この種シリンダブロツクにおいては、４
以上で偶数個のシリンダボアを有するサイアミー
ズシリンダバレルの全周を水ジヤケツトに臨ませ
ている。そして相隣るシリンダボア間の周壁には
水路が無いか、或いはパイプの鋳ぐるみまたは機
械加工により細い水路が有るにすぎない。(2) Conventional technology Conventionally, in this type of cylinder block, 4
In the above manner, the entire circumference of the Siamese cylinder barrel having an even number of cylinder bores is exposed to the water jacket. There is no water channel in the peripheral wall between adjacent cylinder bores, or there is only a narrow water channel due to pipe casting or machining.

(3) 発明が解決しようとする問題点 しかしながら、水ジヤケツトとサイアミーズシ
リンダバレルとが前記のような関係にあると、各
シリンダボア回りの放熱条件を一定にすることが
できず、その結果エンジン運転中における各シリ
ンダボアの内径精度がその円周回りにおいてばら
つくという問題がある。(3) Problems to be Solved by the Invention However, if the water jacket and the Siamese cylinder barrel have the above-mentioned relationship, the heat dissipation conditions around each cylinder bore cannot be made constant, and as a result, during engine operation, There is a problem in that the accuracy of the inner diameter of each cylinder bore varies around its circumference.

本発明は上記に鑑み、各シリンダボア回りの放
熱条件を略一定にし、エンジン運転中における各
シリンダボアの内径精度をその円周回りにおいて
略均一にし得るようにした前記サイアミーズ型シ
リンダブロツクを提供することを目的とする。 In view of the above, it is an object of the present invention to provide the Siamese type cylinder block, in which the heat dissipation conditions around each cylinder bore are made substantially constant, and the accuracy of the inner diameter of each cylinder bore is made substantially uniform around the circumference during engine operation. purpose.

Ｂ 発明の構成 (1) 問題点を解決するための手段 本発明は、水ジヤケツトを有するシリンダブロ
ツク外壁に、全周が前記水ジヤケツトに臨む独立
した１個または複数個のサイアミーズシリンダバ
レルと、該サイアミーズシリンダバレルの両外側
に隣接して周壁が前記シリンダブロツク外壁に連
なる一対の単一シリンダバレルとを備え、各サイ
アミーズシリンダバレルには２本のシリンダボア
を、また各単一シリンダバレルには１本のシリン
ダボアをそれぞれ形成したことを特徴とする。B. Structure of the Invention (1) Means for Solving the Problems The present invention provides an arrangement in which one or more independent Siamese cylinder barrels whose entire periphery faces the water jacket are provided on the outer wall of a cylinder block having a water jacket; a pair of single cylinder barrels adjacent to both outer sides of the Siamese cylinder barrels, the peripheral wall of which is continuous with the outer wall of the cylinder block, each Siamese cylinder barrel having two cylinder bores, and each single cylinder barrel having one cylinder bore; The cylinder bore is formed in each cylinder.

(2) 作用 前記のように水ジヤケツトに、１個または複数
個のサイアミーズシリンダバレルおよび単一シリ
ンダバレルを臨ませると、サイアミーズシリンダ
バレルの水との接触面積が単一シリンダバレルの
水との接触面積の略２倍となり、これにより各シ
リンダボア回りの放熱条件が略一定となる。(2) Effect When one or more Siamese cylinder barrels and a single cylinder barrel are placed facing the water jacket as described above, the contact area of the Siamese cylinder barrel with water is equal to the contact area of the single cylinder barrel with water. This is approximately twice the area, and as a result, the heat dissipation conditions around each cylinder bore are approximately constant.

(3) 実施例 第１〜第４図は直列４気筒エンジンに用いられ
るサイアミーズ型シリンダブロツクＳを示し、そ
のシリンダブロツクＳは、水ジヤケツト２を有す
るシリンダブロツク外壁１に、全周が水ジヤケツ
ト３に臨む独立した１個の繭形サイアミーズシリ
ンダバレル３1と、そのサイアミーズシリンダバ
レル３1の両側に隣接して周壁３ａがシリンダブ
ロツク外壁１に連なる一対のＣ字形単一シリンダ
バレル３2とを備えたものである。シリンダブロ
ツク外壁１および各バレル３1，３2はアルミニウ
ム合金より構成される。(3) Embodiment Figures 1 to 4 show a Siamese type cylinder block S used in an in-line four-cylinder engine. It is equipped with one independent cocoon-shaped Siamese cylinder barrel 31 facing the cylinder block, and a pair of C-shaped single cylinder barrels 32 adjacent to both sides of the Siamese cylinder barrel 31 , the peripheral wall 3a of which is connected to the cylinder block outer wall 1 . It is something that The cylinder block outer wall 1 and each barrel 3 1 , 3 2 are made of aluminum alloy.

サイアミーズシリンダバレル３1にはそれに鋳
鉄製スリーブ４の鋳ぐるみにより形成された２個
のシリンダボア５が、また両単一シリンダバレル
３2には同様にスリーブ４の鋳ぐるみにより形成
された１個のシリンダボア５がそれぞれ設けられ
る。 The Siamese cylinder barrel 3 1 has two cylinder bores 5 formed by the casting of a cast iron sleeve 4 , and both single cylinder barrels 3 2 have one cylinder bore 5 formed by the casting of the sleeve 4 . Cylinder bores 5 are provided respectively.

シリンダブロツク外壁１のシリンダヘツド接合
面１ａには水ジヤケツト２の複数の連通口２ａが
各バレル３1，３2を囲繞するように開口してお
り、相隣る連通口２ａ間には補強つなぎ部６が設
けられ、これによりシリンダブロツクＳはクロー
ズドデツキ型に構成される。 A plurality of communication ports 2a for water jackets 2 are opened in the cylinder head joint surface 1a of the cylinder block outer wall 1 so as to surround each barrel 3 1 , 3 2 , and reinforcing joints are installed between adjacent communication ports 2 a. A section 6 is provided, whereby the cylinder block S is constructed in the form of a closed deck.

前記のように両バレル３1，３2を水ジヤケツト
２に臨ませると、サイアミーズシリンダバレル３
１の水との接触面積が各単一シリンダバレル３2の
水との接触面積の略２倍となり、これにより各シ
リンダボア５回りの放熱条件が略一定となる。 When both barrels 3 1 and 3 2 face the water jacket 2 as described above, the Siamese cylinder barrel 3
The contact area with water of each single cylinder barrel 3 2 is approximately twice the contact area with water of each single cylinder barrel 3 2 , thereby making the heat dissipation conditions around each cylinder bore 5 approximately constant.

また単一シリンダバレル３2のシリンダボア５
とそれと相隣るサイアミーズシリンダバレル３1
のシリンダボア５との中心間距離L1はサイアミ
ーズシリンダバレル３2の両シリンダボア５の中
心間距離L2よりも長くなつている（即ちL1＞
L2）。このように両中心間距離L1，L2を設定する
と従来のシリンダブロツクのシリンダボア配列方
向長さＬを変えずに両バレル３1，３2間に水路を
形成することができる。 Also single cylinder barrel 3 cylinder bore 5 of 2
And adjacent Siamese cylinder barrel 3 1
The distance L 1 between the centers of the cylinder bore 5 and the cylinder bore 5 of the Siamese cylinder barrel 3 2 is longer than the distance L 2 between the centers of both cylinder bores 5 of the Siamese cylinder barrel 3 2 (that is, L 1 >
L2 ). By setting the center-to-center distances L 1 and L 2 in this way, a water channel can be formed between the barrels 3 1 and 3 2 without changing the length L in the cylinder bore arrangement direction of the conventional cylinder block.

第５図は直列６気筒エンジンに用いられるサイ
アミーズ型シリンダブロツクＳを示し、この場合
にはサイアミーズシリンダバレル３1が２個設け
られている。 FIG. 5 shows a Siamese cylinder block S used in an in-line six-cylinder engine, and in this case two Siamese cylinder barrels 31 are provided.

なお、本発明は直列８気筒上のサイアミーズシ
リンダブロツクにも適用される。 Incidentally, the present invention is also applied to a Siamese cylinder block with eight in-line cylinders.

Ｃ 発明の効果 本発明によれば、水ジヤケツトを有するシリン
ダブロツク外壁に、全周が前記水ジヤケツトに臨
む独立した１個または複数個のサイアミーズシリ
ンダバレルと、該サイアミーズシリンダバレルの
両外側に隣接して周壁が前記シリンダブロツク外
壁に連なる一対の単一シリンダバレルとを備え、
各サイアミーズシリンダバレルには２本のシリン
ダボアを、また各単一シリンダバレルには１本の
シリンダボアをそれぞれ形成したので、２個のシ
リンダボアを有するサイアミーズシリンダバレル
の水との接触面積が１個のシリンダボアを有する
単一シリンダバレルの水との接触面積の略２倍と
なり、これにより各シリンダボア回りの放熱条件
を略一定にしてエンジン運転中における各シリン
ダボアの内径精度をその円周回りにおいて略均一
にすることができる。C. Effects of the Invention According to the present invention, an outer wall of a cylinder block having a water jacket is provided with one or more independent Siamese cylinder barrels whose entire periphery faces the water jacket, and adjacent to both outer sides of the Siamese cylinder barrel. a pair of single cylinder barrels, the peripheral wall of which is connected to the outer wall of the cylinder block;
Each Siamese cylinder barrel has two cylinder bores, and each single cylinder barrel has one cylinder bore, so that the water contact area of the Siamese cylinder barrel with two cylinder bores is equal to that of one cylinder bore. This is approximately twice the contact area with water of a single cylinder barrel, which makes the heat dissipation conditions around each cylinder bore approximately constant, making the inner diameter accuracy of each cylinder bore approximately uniform around its circumference during engine operation. be able to.

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

第１乃至第４図は本発明の第１実施例を示し、
第１図は上方から見た斜視図、第２図は第１図
−線断面図、第３図は下方から見た斜視図、第
４図は第２図−線断面図、第５図は本発明の
第２実施例の第４図と同様の断面図である。 Ｓ……サイアミーズ型シリンダブロツク、１…
…シリンダブロツク外壁、３1……サイアミーズ
シリンダバレル、３2……単一シリンダバレル、
３ａ……周壁、５……シリンダボア。 1 to 4 show a first embodiment of the present invention,
Fig. 1 is a perspective view taken from above, Fig. 2 is a cross-sectional view taken along the line shown in Fig. 1, Fig. 3 is a perspective view taken from below, Fig. 4 is a sectional view taken taken along Fig. 2, and Fig. 5 is a sectional view taken along the line taken from Fig. 2. FIG. 4 is a sectional view similar to FIG. 4 of the second embodiment of the present invention. S...Siamese type cylinder block, 1...
... Cylinder block outer wall, 3 1 ... Siamese cylinder barrel, 3 2 ... Single cylinder barrel,
3a...peripheral wall, 5...cylinder bore.

Claims (1)

【特許請求の範囲】[Claims] １ 水ジヤケツトを有するシリンダブロツク外壁
に、全周が前記水ジヤケツトに臨む独立した１個
または複数個のサイアミーズシリンダバレルと、
該サイアミーズシリンダバレルの両外側に隣接し
て周壁が前記シリンダブロツク外壁に連なる一対
の単一シリンダバレルとを備え、各サイアミーズ
シリンダバレルには２本のシリンダボアを、また
各単一シリンダバレルには１本のシリンダボアを
それぞれ形成してなるサイアミーズ型シリンダブ
ロツク。1. On the outer wall of the cylinder block having a water jacket, one or more independent Siamese cylinder barrels whose entire circumference faces the water jacket;
a pair of single cylinder barrels adjacent to both outer sides of the Siamese cylinder barrel, the peripheral wall of which is continuous with the outer wall of the cylinder block, each Siamese cylinder barrel having two cylinder bores, and each single cylinder barrel having one cylinder bore; A Siamese-type cylinder block that forms each cylinder bore of a book.
JP23623384A 1984-11-09 1984-11-09 Siamese type cylinder block Granted JPS61116052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23623384A JPS61116052A (en) 1984-11-09 1984-11-09 Siamese type cylinder block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23623384A JPS61116052A (en) 1984-11-09 1984-11-09 Siamese type cylinder block

Publications (2)

Publication Number Publication Date
JPS61116052A JPS61116052A (en) 1986-06-03
JPH0146704B2 true JPH0146704B2 (en) 1989-10-11

Family

ID=16997758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23623384A Granted JPS61116052A (en) 1984-11-09 1984-11-09 Siamese type cylinder block

Country Status (1)

Country Link
JP (1) JPS61116052A (en)

Also Published As

Publication number Publication date
JPS61116052A (en) 1986-06-03

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