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JPS60192857A - Cylinder head structure of engine - Google Patents

Cylinder head structure of engine

Info

Publication number
JPS60192857A
JPS60192857A JP5038284A JP5038284A JPS60192857A JP S60192857 A JPS60192857 A JP S60192857A JP 5038284 A JP5038284 A JP 5038284A JP 5038284 A JP5038284 A JP 5038284A JP S60192857 A JPS60192857 A JP S60192857A
Authority
JP
Japan
Prior art keywords
bore
bores
thick
cylinder head
head
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
Application number
JP5038284A
Other languages
Japanese (ja)
Other versions
JPH0218418B2 (en
Inventor
Masahiro Chiyoushi
調枝 昌博
Shin Hiraoka
平岡 伸
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP5038284A priority Critical patent/JPS60192857A/en
Publication of JPS60192857A publication Critical patent/JPS60192857A/en
Publication of JPH0218418B2 publication Critical patent/JPH0218418B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F1/242Arrangement of spark plugs or injectors

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

PURPOSE:To effectively improve sealing performance by joining a thick part which connects a head-bolt boss part between a bore and a thick part around the bore, between the bore. CONSTITUTION:A head-bolt boss part 16 is connected in the direction of width of a cylinder head 4 by a thick part 17. A thick bore grommet part 15 which has a near circular form and surrounds a combustion chamber 6 (bore 1) into which a suction port 8 and an exhaust port 9 are opened is formed. The both thick parts are joined between the bore. Therefore, a surface pressure can be secured between the bores, and sealing performance can be effectively improved.

Description

【発明の詳細な説明】 [産業上の利用分野1 本発明は、エンジンのシリンダヘッド構造、特にシリン
ダヘッドとシリンダブロックとの間のシール性を確保す
るだめの構造に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application 1] The present invention relates to a cylinder head structure for an engine, and particularly to a structure for ensuring sealing between the cylinder head and a cylinder block.

[従来技術[ 一般に、エンジンのシリンダブロック上にガスケットを
介して接合されるシリンダヘッドにおいては、そのボア
周りは@焼圧が作用するので、良好なシール性を確保す
る上で、シリンダブロック(ガスケット)に対する面圧
を十分に確保する必要 −か゛ある。特に、シリンダヘ
ッドのボア間は、両ボアからの燃焼圧が作用するので、
面圧確保が最も必要とされる箇所である。
[Prior art] In general, in a cylinder head that is joined to the cylinder block of an engine via a gasket, compression pressure acts around the bore, so in order to ensure good sealing performance, it is necessary to ) There is a need to ensure sufficient surface pressure against the In particular, combustion pressure from both bores acts between the cylinder head bores, so
This is the location where securing surface pressure is most necessary.

そのため、従来、実開昭53−123307号公報に示
されるように、シリンダヘッドのボア間におけるロアデ
ンキに別部祠をjiJJ込んで剛性を増大さぜるように
したものが提案されている。
Therefore, as shown in Japanese Utility Model Application Laid-Open No. 53-123307, it has been proposed to increase the rigidity by inserting a separate hole in the lower metal plate between the bores of the cylinder head.

しかるに、このものでは、単にシリンダヘッドのボア間
のロアデツキの剛性が増大するだけであるため、燃焼圧
の応力集中の防止には効果かあるものの、ヘッドボルト
の綿・刊けによる1ンプテ゛ツキからの締(=Iは力が
作用せず、ボア間の面圧を十分に上げられないという問
題があった。
However, this method merely increases the rigidity of the lower deck between the bores of the cylinder head, so although it is effective in preventing the stress concentration of combustion pressure, Tightening (=I) had the problem that no force was applied and the surface pressure between the bores could not be sufficiently increased.

かかる問題は、とりわけ高出力化が指向されている最近
のエンジンにおいては、燃焼圧がきわめて高くなること
か呟より一層重要な問題となる。
This problem becomes even more important, especially in modern engines that are geared toward higher output, because the combustion pressure becomes extremely high.

[発明の目的1 本発明は、かかる問題に鑑みて、ヘットボルトの締付け
力をボア周りの肉厚部に有効に伝達し、最も応力が集中
するボア間のボア周1)の肉厚部を補強して、必要な面
圧を確保することを目的としている。
[Objective of the Invention 1] In view of such problems, the present invention effectively transmits the tightening force of the head bolt to the thick walled portion around the bore, and reinforces the thick walled portion 1) around the bore between the bores where stress is most concentrated. The purpose is to ensure the necessary surface pressure.

[発明の構成1 かかる目的を達成するため、本゛発明においては、シリ
ンダヘッドのボア間に位置するヘッドボルトのボス部間
を連結する肉厚部を形成するとともに、このヘッドボル
トボス部間の肉厚部を、ボア周囲の肉厚部とボア間にお
いて結合するようにしたことを基本的な特徴としている
[Structure 1 of the Invention] In order to achieve the above object, in the present invention, a thick part is formed to connect the boss parts of the head bolt located between the bores of the cylinder head, and a thick part is formed to connect the boss parts of the head bolt located between the bores of the cylinder head. The basic feature is that the thick part is connected to the thick part around the bore and between the bores.

つよI)、本発明では、ボア周りの肉厚部がヘッドボル
トのボス部を連結する肉厚部によりボア間において結合
されて補強されるとともに、ヘッドボルトの締イリは力
が肉厚部を介してボア周りの肉厚部に伝達されて、ボア
間の面圧が確保される。
In the present invention, the thick part around the bore is connected and reinforced between the bores by the thick part connecting the boss part of the head bolt, and when the head bolt is tightened, the force is applied to the thick part. The pressure is transmitted to the thick walled portion around the bore to ensure surface pressure between the bores.

[発明の効果] したがって、本発明によれば、ボア周囲に形成される肉
厚部の強度を高めることができ、ボア間における面圧を
確保することができるので、シール性を有効に向上する
ことができる。
[Effects of the Invention] Therefore, according to the present invention, the strength of the thick wall portion formed around the bore can be increased, and the surface pressure between the bores can be ensured, so that the sealing performance can be effectively improved. be able to.

゛ [実施例1 以下、本発明の実施例を図面を参考に具体的に説明する
[Example 1] Examples of the present invention will be specifically described below with reference to the drawings.

第1図に示すように、シリンダボア1が形成されたシリ
ンダブロック2上には、〃スケット3を介してシリンダ
入ノド4が載置固定されてエンノン本体5が構成されて
いる。
As shown in FIG. 1, on a cylinder block 2 in which a cylinder bore 1 is formed, a cylinder nozzle 4 is placed and fixed via a socket 3, thereby forming an ennon main body 5.

シリンダヘッド4には、シリンダボア1とともに燃焼室
6を画成する凹壁部7が形成され、この凹壁部7には、
一方向から吸気ボート8が開口され、池方向から排気ポ
ート9が開口されている。
A concave wall portion 7 that defines a combustion chamber 6 together with the cylinder bore 1 is formed in the cylinder head 4, and this concave wall portion 7 includes:
The intake boat 8 is opened from one direction, and the exhaust port 9 is opened from the pond direction.

これら吸気ポート8.排気ポート9は、夫々吸気弁10
.排気弁11によって開閉されるようになっており、こ
れら吸、排気弁io、i1は、周知のオーバーへラドカ
ム機構12により、エンジンの回転に同期し、各々所定
のタイミングで開閉駆動される。なお、第1図において
、13はカムキャップ、14はへラドカバーである。
These intake ports8. The exhaust port 9 is connected to the intake valve 10, respectively.
.. These intake and exhaust valves io and i1 are opened and closed by a well-known overdrive cam mechanism 12 in synchronization with the rotation of the engine, and are driven to open and close at predetermined timings. In addition, in FIG. 1, 13 is a cam cap, and 14 is a helad cover.

第2図にシリンダヘッドの水平断面を示すように、吸気
ポート8および排気ポート9が開口する燃焼室6(ボア
1)を囲う略円形の肉厚のボアグロメット部15(ボア
周りの肉厚部)が形成されており、相隣る燃焼室6,6
間(ボア1,1問)において、ボア1,1.・・・の配
列方向に関して両側に位置する一対のヘッドボルトボス
部IG、IGは、肉厚部17によってシリンダヘッド4
の幅方向に連結されている。
As shown in the horizontal cross section of the cylinder head in FIG. ) is formed, and adjacent combustion chambers 6, 6
Between (Bore 1, 1 question), Bore 1, 1. A pair of head bolt bosses IG, IG located on both sides with respect to the arrangement direction of...
are connected in the width direction.

この肉厚部17は、この実施例では、ヘッドボルトボス
部1.6.16の略中間に形成された柱状リブ18と、
柱状リブ18と各ヘッドボルトボス部16とを下部にお
いて結合する円弧状一対の連結リブ19,19とによっ
て構成されている。
In this embodiment, this thick portion 17 includes a columnar rib 18 formed approximately in the middle of the head bolt boss portion 1.6.16;
It is composed of a columnar rib 18 and a pair of arcuate connecting ribs 19, 19 that connect the respective head bolt boss portions 16 at the lower part.

この柱状リブ1旧よ、相隣るボアグロメット部15.1
5が最も接近する部分において両者を結合するように形
成され、また、各一対の連結リブ19.19は、柱状リ
ブ18とヘッドボルトボス部16とを平面的にみて長円
状に結合し、柱状リブ18に近づくにしたがって、ボア
グロメット部15の外周部に一体化された状態に結合さ
れ、これにより、ボア1,1開のボアグロメット部15
゜15を補強する。
This columnar rib 1 old, adjacent bore grommet part 15.1
5 is formed so as to connect the two at the portion where they are closest to each other, and each pair of connecting ribs 19 and 19 connect the columnar rib 18 and the head bolt boss portion 16 in an elliptical shape when viewed from above, As the columnar rib 18 approaches, it is coupled to the outer circumference of the bore grommet part 15 in an integrated state, so that the bore grommet part 15 with the bores 1 and 1 open
Reinforce ゜15.

第3図に示すように、柱状リブ18は、シリンダヘッド
4のロアデツキ20とトップデツキ21とをヘッドボル
トボス部16.16とともに上下方向に剛に結合して、
両デツキ2o、21間を補強し、シリンダへラド4をシ
リンダブロック2に締結固定するヘッドポル)22.2
2の締付は力をトップデツキ21側からロアデツキ20
側に作用させる。
As shown in FIG. 3, the columnar rib 18 rigidly connects the lower deck 20 and top deck 21 of the cylinder head 4 together with the head bolt boss portion 16.16 in the vertical direction.
Head pole) 22.2 which reinforces the space between both decks 2o and 21 and fastens and fixes the cylinder rod 4 to the cylinder block 2.
For tightening 2, apply force from the top deck 21 side to the lower deck 20.
Act on the side.

この柱状リブ18は、12図にみられるように、断面が
シリンダヘッド4の長手方向に長い楕円形状になってお
り、該方向に流れる冷却水の流れを阻害しないように構
成されている。
As shown in FIG. 12, the columnar ribs 18 have an elliptical cross section that is elongated in the longitudinal direction of the cylinder head 4, and are configured so as not to obstruct the flow of cooling water in this direction.

また、ヘッドボルトボス部16に作用する締付は力の一
部は、一対の連結リブ19,19により、ボア1,1間
に位置するボアグロメッ)7m15゜15に伝達され、
これによって、この部分のボアグロメット部15.15
には、必要な高い面圧が確保される。
In addition, part of the tightening force acting on the head bolt boss portion 16 is transmitted to the bore grommet (7m15°15) located between the bores 1, 1 by a pair of connecting ribs 19, 19.
By this, the bore grommet part 15.15 of this part
The necessary high surface pressure is ensured.

なお、第2図、第3図に−示すように、各一対の連結リ
ブ19.19で囲われた部分は、ウォータジャケット2
3.24として形成し、このウオータノヤケット23.
24には、シリンダブロック2側の冷却水通路25.2
5に連通する連通路26゜27を設けて冷却水を導く。
As shown in FIGS. 2 and 3, the portions surrounded by each pair of connecting ribs 19 and 19 are connected to the water jacket 2.
3.24, this water jacket 23.
24 includes a cooling water passage 25.2 on the cylinder block 2 side.
Communication passages 26 and 27 are provided to communicate with the cooling water.

ボア1,1間に上記のようなウォータジャケット23.
24を設けて、冷却水を導くようにすれば、ボア1.1
間の熱的に厳しい部分を有効に冷却でざるので好ましい
A water jacket 23 as described above is provided between the bores 1 and 1.
24 to guide the cooling water, the bore 1.1
This is preferable because it effectively cools the thermally severe areas in between.

第2図において、28は点火プラグの装着穴、29.2
9.・・・は他のウォータジャケラFである。
In Figure 2, 28 is a spark plug mounting hole, 29.2
9. ... is another Water Jackera F.

以上の構成とすれば、ボア1,1間に位置するボス部1
6.1611flを肉厚部17で連結し、この肉厚部1
7とボアグロメット部15.15とが結合されるので、
ボアグロメット部15,15のボア1,1間の部分の剛
性がアップされ、熱的疲労やそれに伴うクラックの発生
を有効に防止することができる。また、ヘッドボルト2
2の締付は力が肉厚部17を介して、ボア1,1間のボ
アグロメット部15.15に有効に伝達されるので、高
い面圧を確保することができる。
With the above configuration, the boss portion 1 located between the bores 1 and 1
6.1611fl are connected by the thick part 17, and this thick part 1
7 and the bore grommet part 15.15 are combined, so
The rigidity of the portion between the bores 1, 1 of the bore grommet portions 15, 15 is increased, and thermal fatigue and the occurrence of cracks associated therewith can be effectively prevented. Also, head bolt 2
2, the force is effectively transmitted to the bore grommet portion 15.15 between the bores 1, 1 through the thick wall portion 17, so that a high surface pressure can be ensured.

また、上記の実施例では、ロアデツキ20とトップデツ
キ21夷を結合する柱状リブ18および各一対の連結リ
ブ19,19を含んで肉厚部17を構成したが、本発明
はこれに限られるものではなく、要はヘッドボルトボス
部をボア間において連結する肉厚部とボア周りの肉厚部
とがボア間において結合された構造であればよい。
Further, in the above embodiment, the thick wall portion 17 is configured to include the columnar rib 18 that connects the lower deck 20 and the top deck 21 and each pair of connecting ribs 19, 19, but the present invention is not limited to this. In short, any structure is sufficient as long as the thick part connecting the head bolt boss part between the bores and the thick part around the bore are connected between the bores.

同様に、本発明は、オーバーへッドカムti構からなる
動弁機構に限定されるものではないことはいうまでもな
い。
Similarly, it goes without saying that the present invention is not limited to a valve train having an overhead cam structure.

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

第1図はエンジンの要部垂直断面図、第2図はシリンダ
ヘッドの水平断面図、第3図は第2図の111.111
線方向断面図である。 1・・・シリンダボア、 2・・・シリンダブロック、
4・・・シリンダヘッド、15・・・ボアグロメット部
、16・・・ヘッドボルトボス部、1′?・・・肉厚部
。 特許出願人 東洋工業株式会ネ」
Figure 1 is a vertical sectional view of the main parts of the engine, Figure 2 is a horizontal sectional view of the cylinder head, and Figure 3 is 111.111 of Figure 2.
It is a line direction sectional view. 1... Cylinder bore, 2... Cylinder block,
4... Cylinder head, 15... Bore grommet part, 16... Head bolt boss part, 1'? ...thick part. Patent applicant: Toyo Kogyo Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (1)ボア周りに形成された肉厚部と、ボア間に位置す
るヘッドボルトボス部と、ボア間に位置するヘッドボル
トボス部間を連結する肉厚部とが設けられ、両方の肉厚
部がボア間において互いに結合されていることを特徴と
するエンジンのシリンダヘッド構造。
(1) A thick part formed around the bore, a head bolt boss part located between the bores, and a thick part connecting the head bolt boss parts located between the bores are provided, and the thickness of both A cylinder head structure for an engine, characterized in that parts are connected to each other between bores.
JP5038284A 1984-03-15 1984-03-15 Cylinder head structure of engine Granted JPS60192857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5038284A JPS60192857A (en) 1984-03-15 1984-03-15 Cylinder head structure of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5038284A JPS60192857A (en) 1984-03-15 1984-03-15 Cylinder head structure of engine

Publications (2)

Publication Number Publication Date
JPS60192857A true JPS60192857A (en) 1985-10-01
JPH0218418B2 JPH0218418B2 (en) 1990-04-25

Family

ID=12857318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5038284A Granted JPS60192857A (en) 1984-03-15 1984-03-15 Cylinder head structure of engine

Country Status (1)

Country Link
JP (1) JPS60192857A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222647U (en) * 1988-07-28 1990-02-15
JPH0330554U (en) * 1989-07-31 1991-03-26
JPH0599064A (en) * 1991-10-04 1993-04-20 Kubota Corp Cylinder head of air-cooled multi-cylinder overhead valve engine
WO2024004308A1 (en) * 2022-06-30 2024-01-04 株式会社クボタ Cylinder head structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163731U (en) * 1980-05-07 1981-12-04
JPS56171649U (en) * 1980-05-22 1981-12-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163731U (en) * 1980-05-07 1981-12-04
JPS56171649U (en) * 1980-05-22 1981-12-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222647U (en) * 1988-07-28 1990-02-15
JPH0330554U (en) * 1989-07-31 1991-03-26
JPH0599064A (en) * 1991-10-04 1993-04-20 Kubota Corp Cylinder head of air-cooled multi-cylinder overhead valve engine
WO2024004308A1 (en) * 2022-06-30 2024-01-04 株式会社クボタ Cylinder head structure

Also Published As

Publication number Publication date
JPH0218418B2 (en) 1990-04-25

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