JPH0674042A - Structure of cylinder head for four-valve type internal combustion engine - Google Patents

Structure of cylinder head for four-valve type internal combustion engine

Info

Publication number
JPH0674042A
JPH0674042A JP22409892A JP22409892A JPH0674042A JP H0674042 A JPH0674042 A JP H0674042A JP 22409892 A JP22409892 A JP 22409892A JP 22409892 A JP22409892 A JP 22409892A JP H0674042 A JPH0674042 A JP H0674042A
Authority
JP
Japan
Prior art keywords
cooling water
water jacket
partition plate
cylinder head
ports
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
JP22409892A
Other languages
Japanese (ja)
Other versions
JP2941124B2 (en
Inventor
Ryohei Kusunoki
亮平 楠
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu 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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP4224098A priority Critical patent/JP2941124B2/en
Publication of JPH0674042A publication Critical patent/JPH0674042A/en
Application granted granted Critical
Publication of JP2941124B2 publication Critical patent/JP2941124B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02F1/42Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02F1/26Cylinder heads having cooling means
    • F02F1/36Cylinder heads having cooling means for liquid cooling
    • F02F1/40Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/10Diamond configuration of valves in cylinder heads
    • 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
    • F02F2001/244Arrangement of valve stems in cylinder heads
    • F02F2001/247Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

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)
  • Fuel-Injection Apparatus (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PURPOSE:To increase a velocity of flow and to perform positive cooling of each valve by a method wherein a cooling water jacket in a cylinder is partitioned into upper and lower parts by a partition plate, the part, situated inside intake air and exhaust gas ports, of the partition plate is recessed in a downward direction, and a cooling water pass hole through which water passes from a lower part to an upper part is formed in a spot through which a sleeve is extended. CONSTITUTION:A partition plate 12 by which the interior of the cooling water jacket 11 of a cylinder head 4 is partitioned into upper and lower cooling water jackets 11b and 11a is provided. The part 12a, positioned inside intake air ports 6, 7 and exhaust gas ports 8, 9, of the partition plate 12 is recessed in a down state, and a cooling water hole 14 is formed in a spot through which a sleeve 5 is extended and causes the passage of water from the lower cooling water jacket 11a to the upper cooling water jacket 11b. Cooling water flows through parts between the adjoining ports 6, 7, 8, and 9 and the part 12a inside the partition plate 12 is recessed in a downward direction, whereby a part between valves is positively cooled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、一つの気筒に二つの吸
気弁と同じく二つの排気弁とを備えて成るいわゆる四弁
式の内燃機関において、そのシリンダヘッドの構造に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a cylinder head of a so-called four-valve internal combustion engine in which one cylinder is provided with two intake valves and two exhaust valves.

【0002】[0002]

【従来の技術】最近の内燃機関においては、出力の向上
等を図るために、一つに気筒に二つの吸気弁と同じく二
つの排気弁とを設けて四弁式にすることが行われている
が、この四弁式の内燃機関においては、各々吸気弁を備
えた二つの吸気ポート及び各々排気弁を備えた二つの排
気ポートを互いに接近して設けるので、シリンダヘッド
のうち各弁の相互間の部分、及び各弁にて囲まれ部分に
おける温度が高くなるから、シリンダヘッドのうち各弁
間の部分に、熱亀裂が発生したり、シリンダヘッドにお
ける熱歪みが大きくなったりする等の熱的悪影響が発生
する。
2. Description of the Related Art In recent internal combustion engines, in order to improve the output and the like, one cylinder is provided with two intake valves and two exhaust valves, and a four-valve type is provided. However, in this four-valve internal combustion engine, two intake ports each having an intake valve and two exhaust ports each having an exhaust valve are provided close to each other, so that the valves of the cylinder head are mutually connected. Since the temperature of the space between the valves and the area surrounded by each valve becomes higher, heat such as thermal cracks occurring in the parts of the cylinder head between the valves or thermal distortion in the cylinder head increases. Adversely occurs.

【0003】そこで、従来は、例えば、実開昭58−1
30048号公報等に記載されているように、シリンダ
ヘッドのうち各弁の相互間の部分に、ドリル孔を穿設し
て、この各ドリル孔に冷却水を流すことによって、各弁
の相互間の部分、及び各弁にて囲まれた部分を冷却する
ように構成している。
Therefore, in the prior art, for example, the actual development of Sho 58-1
As described in Japanese Laid-Open Patent Publication No. 30048, a hole is drilled in a portion of the cylinder head between the valves, and cooling water is caused to flow through the drill holes. And the portion surrounded by each valve are cooled.

【0004】[0004]

【発明が解決しようとする課題】しかし、四つの弁の相
互間の部分に、冷却水を流すためのドリル孔を穿設する
ことは、この各ドリル孔は、シリンダヘッドの外側面よ
り、可成り長いドリル工具を使用して穿設するようにし
なければならず、これに多大の手数を必要とするばかり
か、このドリル孔におけるシリンダヘッドの外側面に対
する開口部を塞ぐようにしなければならないから、製造
コストが大幅にアップすると言う問題があった。
However, it is possible to form a drill hole for flowing the cooling water in the portion between the four valves so that each of the drill holes can be opened from the outer surface of the cylinder head. It has to be drilled using a fairly long drilling tool, which not only requires a great deal of work, but it also has to close the opening to the outer surface of the cylinder head in this drill hole. However, there was a problem that the manufacturing cost would increase significantly.

【0005】しかも、各弁の相互間の部分にドリル孔を
穿設することのために、各弁の相互間の部分、及び各弁
にて囲まれた部分を相当に肉厚状に構成しなければなら
ないから、シリンダヘッドの重量が可成りアップするの
であり、その上、四つの各弁におけるレイアウトが、こ
れら各弁の相互間の部分に対してシリンダヘッドの外側
面よりドリル孔を穿設することによって限定されること
になるから、各弁のレイアウトを任意に設定することが
できないと言う問題もあった。
Moreover, in order to form the drill holes in the portions between the respective valves, the portions between the respective valves and the portion surrounded by the respective valves are made considerably thick. The weight of the cylinder head is considerably increased, and the layout of each of the four valves has to be drilled from the outer surface of the cylinder head to the part between these valves. However, there is a problem that the layout of each valve cannot be set arbitrarily because it is limited.

【0006】本発明は、これらの問題を招来することな
く、各弁の相互間の部分及び各弁にて囲まれた部分を確
実に冷却できるようにしたシリンダヘッドの構造を提供
することを技術的課題とするものである。
The present invention is to provide a structure of a cylinder head capable of surely cooling the portions between the valves and the portion surrounded by the valves without causing these problems. It is a specific subject.

【0007】[0007]

【課題を解決するための手段】この技術的課題を達成す
るため本発明は、シリンダブロックの上面におけるシリ
ンダヘッドに、各々吸気弁を備えた二つの吸気ポート
と、各々排気弁を備えた二つの排気ポートとを、燃料噴
射ノズル又は点火栓を収容するスリーブの回りに配設す
るように設けて成る四弁式内燃機関において、前記シリ
ンダヘッドにおける冷却水ジャケット内に、当該冷却水
ジャケットを上下二室に区画する仕切り板を設けて、こ
の仕切り板よりも下方の下部冷却水ジャケットに、前記
シリンダブロックにおける冷却水ジャケットを連通し、
前記仕切り板よりも上方の上部冷却水ジャケットにシリ
ンダヘッド外への冷却水出口を設け、更に、前記仕切り
板のうち少なくとも前記各ポートよりも内側の部分を、
下向きに凹ませる一方、この仕切り板のうち前記スリー
ブが貫通する箇所に、前記下部冷却水ジャケットから前
記上部冷却水ジャケットへの冷却水通孔を設ける構成に
した。
In order to achieve this technical object, the present invention provides a cylinder head on the upper surface of a cylinder block with two intake ports each having an intake valve and two exhaust ports each having an exhaust valve. In a four-valve internal combustion engine in which an exhaust port and a sleeve for accommodating a fuel injection nozzle or a spark plug are provided, a cooling water jacket in the cylinder head has two upper and lower cooling water jackets. A partition plate for partitioning the chamber is provided, and the cooling water jacket in the cylinder block is communicated with the lower cooling water jacket below the partition plate,
A cooling water outlet to the outside of the cylinder head is provided in the upper cooling water jacket above the partition plate, and further, at least a portion of the partition plate inside the ports,
On the other hand, the partition plate is provided with a cooling water passage hole from the lower cooling water jacket to the upper cooling water jacket at a position where the sleeve penetrates while being depressed downward.

【0008】[0008]

【作 用】この構成において、シリンダブロックにお
ける冷却水ジャケットよりシリンダヘッドにおける下部
冷却水ジャケット内に流入した冷却水は、各吸気ポート
及び各排気ポートの相互間の部分を通って、これら各ポ
ートの略中央に位置するスリーブにおける小径部の回り
に集まり、この部分から冷却水通孔を通って、上部冷却
水ジャケットに流出することになるから、シリンダヘッ
ドのうち各吸気ポート及び各排気ポートの相互間の部
分、つまり、各弁の相互間の部分を積極的に冷却するこ
とができるのである。
[Operation] In this configuration, the cooling water flowing from the cooling water jacket in the cylinder block into the lower cooling water jacket in the cylinder head passes through the portions between the intake ports and the exhaust ports, and the It gathers around the small diameter part of the sleeve located in the approximate center and flows out from this part through the cooling water passage hole to the upper cooling water jacket.Therefore, the intake port and exhaust port of the cylinder head are not connected to each other. The part between them, that is, the part between the valves can be actively cooled.

【0009】一方、シリンダヘッドにおける冷却水ジャ
ケット内を、下部冷却水ジャケットと上部れジャケット
とに区画する仕切り板のうち、少なくとも各ポートより
も内側の部分を、下向きに凹ませたことにより、下部冷
却水ジャケット内のうち各ポートで囲まれた部分におけ
る冷却水の流速を部分的に早くすることができるから、
シリンダヘッドのうち各ポート、つまり、各弁にて囲ま
れた部分を、前記下部冷却水ジャケット内における冷却
水の流れ抵抗の増大を招来することなく、積極的に冷却
することができるのである。
On the other hand, among the partition plates partitioning the inside of the cooling water jacket of the cylinder head into the lower cooling water jacket and the upper cooling jacket, at least the portion inside the respective ports is recessed downward, Since the flow velocity of the cooling water in the portion surrounded by each port in the cooling water jacket can be partially increased,
Each port of the cylinder head, that is, a portion surrounded by each valve can be positively cooled without increasing the flow resistance of the cooling water in the lower cooling water jacket.

【0010】[0010]

【発明の効果】従って、本発明によると、各弁の相互間
の部分、及び各弁にて囲まれた部分を、各弁の相互間の
部分に従来のようにドリル孔を穿設することなく、確実
に冷却することができるから、弁間部分に熱亀裂等の熱
的悪影響が発生することを、コストのアップ及び重量の
増大を招来することなく、大幅に低減できるのであり、
しかも、各弁のレイアウトを、前記従来のように各弁の
相互間の部分にドリル孔を穿設することのために制限を
受けることなく、任意に設定できる効果を有する。
As described above, according to the present invention, the portions between the valves and the portion surrounded by the valves are drilled in the portions between the valves in the conventional manner. Without, since it can be surely cooled, it is possible to significantly reduce the occurrence of thermal adverse effects such as thermal cracks in the intervalve portion without increasing the cost and increasing the weight,
Moreover, there is an effect that the layout of each valve can be arbitrarily set without being restricted by drilling holes between the valves as in the conventional case.

【0011】[0011]

【実施例】以下、本発明の実施例を、図1及び図2の図
面について説明する。この図おいて符号1は、シリンダ
ボア2の外側に冷却水ジャケット3を形成して成るシリ
ンダブロックを、符号4は、前記シリンダブロック1の
上面に図示しない複数本のヘッドボルトにて締結したシ
リンダヘッドを各々示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings of FIGS. In this figure, reference numeral 1 is a cylinder block formed by forming a cooling water jacket 3 on the outside of a cylinder bore 2, and reference numeral 4 is a cylinder head fastened to the upper surface of the cylinder block 1 by a plurality of head bolts (not shown). Are shown respectively.

【0012】前記シリンダヘッド4には、前記シリンダ
ボア2における略中心位置に、燃料噴射ノズル又は点火
栓(いずれも図示せず)を収容するスリーブ5が上向き
に延びるように装着されている。また、前記シリンダヘ
ッド4には、二つの吸気ポート6,7と、二つの排気ポ
ート8,9とが、当該各ポート6,7,8,9における
シリンダボア2内への開口部6a,7a,8a,9aが
平面視において前記スリーブ5の周囲に位置するように
形成されており、両吸気ポート6,7のシリンダボア2
内への開口部6a,7aには吸気弁(図示せず)が、ま
た、両排気ポート8,9のシリンダボア3内への開口部
8a,9aには排気弁(図示せず)が各々設けられてい
る。
A sleeve 5 for accommodating a fuel injection nozzle or an ignition plug (neither is shown) is attached to the cylinder head 4 at a substantially central position in the cylinder bore 2 so as to extend upward. In addition, the cylinder head 4 has two intake ports 6 and 7 and two exhaust ports 8 and 9 which are openings 6a, 7a into the cylinder bore 2 at the respective ports 6, 7, 8, 9. 8a and 9a are formed so as to be located around the sleeve 5 in a plan view, and the cylinder bores 2 of the intake ports 6 and 7 are formed.
An intake valve (not shown) is provided at each of the openings 6a and 7a, and an exhaust valve (not shown) is provided at each of the openings 8a and 9a of the exhaust ports 8 and 9 into the cylinder bore 3. Has been.

【0013】なお、前記両吸気ポート6,7の他端6
b,7bは、シリンダヘッド4における一方の側面4a
に開口する一方、前記両排気ポート8,9は、一つの排
気ポート10に合流したのちシリンダヘッド4における
他方の側面4bに開口している。そして、前記シリンダ
ヘッド4における冷却水ジャケット11内には、当該冷
却水ジャケット11内を下方の下部冷却水ジャケット1
1aと上方の上部冷却水ジャケット11bとの二室に区
画するための仕切り板12を設けて、この両冷却水ジャ
ケット11a,11bのうち下部冷却水ジャケット11
a内に、前記シリンダブロック1における冷却水ジャケ
ット3からの冷却水を通孔13を介して導入する一方、
前記両冷却水ジャケット11a,11bのうち上部冷却
水ジャケット11bに、シリンダヘッド4外への冷却水
出口(図示せず)を設ける。
The other end 6 of both intake ports 6 and 7
b and 7b are one side surface 4a of the cylinder head 4.
On the other hand, both the exhaust ports 8 and 9 are joined to one exhaust port 10 and then opened to the other side face 4b of the cylinder head 4. In the cooling water jacket 11 of the cylinder head 4, the lower cooling water jacket 1 below the cooling water jacket 11 is provided.
A partition plate 12 for partitioning into two chambers, 1a and an upper upper cooling water jacket 11b, is provided, and the lower cooling water jacket 11 of both cooling water jackets 11a and 11b is provided.
While introducing the cooling water from the cooling water jacket 3 in the cylinder block 1 through the through hole 13 into a,
The upper cooling water jacket 11b of both cooling water jackets 11a and 11b is provided with a cooling water outlet (not shown) to the outside of the cylinder head 4.

【0014】更に、前記仕切り板12のうち両吸気ポー
ト6,7及び両排気ポート8,9よりも内側の部分12
aを、下向きに部分的に凹ませる一方、この仕切り板1
2のうち当該仕切り板12を前記スリーブ5が貫通する
箇所に、前記下部冷却水ジャケット11aから前記上部
冷却水ジャケット11bへの冷却水通孔14を設ける。
Further, a portion 12 of the partition plate 12 which is inside the both intake ports 6 and 7 and the exhaust ports 8 and 9.
a is partially depressed downward, while the partition plate 1
A cooling water passage 14 from the lower cooling water jacket 11a to the upper cooling water jacket 11b is provided at a position of the partition plate 12 where the sleeve 5 penetrates.

【0015】この構成において、シリンダブロック1の
冷却水ジャケット3内においてシリンダブロック1を冷
却したあとの冷却水は、シリンダブロック1の冷却水ジ
ャケット3から、通孔13を介して、シリンダヘッド4
における下部冷却水ジャケット11a内に流入する。次
いで、この下部冷却水ジャケット11a内に流入した冷
却水は、仕切り板12のうち当該仕切り板12をスリー
ブ5が貫通する箇所に下部冷却水ジャケット11aから
上部冷却水ジャケット11bへの冷却水通孔14を設け
たことにより、図2に点線矢印A1 ,A2 ,A3 ,A4
で示すように、各ポート6,7,8,9の相互間の部分
を通って、前記スリーブ5の回りに集まったのち、前記
冷却水通孔14から上部冷却水ジャケット11b内に流
出するから、シリンダヘッド4のうち各ポート6,7,
8,9の相互間の部分、つまり、各弁の相互間の部分を
積極的に冷却することができるのである。
In this structure, the cooling water after cooling the cylinder block 1 in the cooling water jacket 3 of the cylinder block 1 is passed from the cooling water jacket 3 of the cylinder block 1 through the through hole 13 to the cylinder head 4.
Flows into the lower cooling water jacket 11a. Next, the cooling water that has flowed into the lower cooling water jacket 11a has a cooling water passage hole from the lower cooling water jacket 11a to the upper cooling water jacket 11b at a position of the partition plate 12 where the sleeve 5 penetrates the partition plate 12. By providing 14, the dotted arrows A 1 , A 2 , A 3 , A 4 in FIG.
As shown in FIG. 5, after gathering around the sleeve 5 through the portions between the ports 6, 7, 8, 9 and then flowing out from the cooling water through hole 14 into the upper cooling water jacket 11b. , Each port of the cylinder head 4, 6, 7,
It is possible to positively cool the portion between the valves 8 and 9, that is, the portion between the valves.

【0016】一方、前記仕切り板12のうち、両吸気ポ
ート6,7及び両排気ポート8,9よりも内側の部分1
2aを、下向きに凹ませたことにより、下部冷却水ジャ
ケット11a内のうち両吸気ポート6,7及び両排気ポ
ート8,9で囲まれた部分における冷却水の流速を部分
的に早くすることができるから、シリンダヘッド4のう
ち両吸気ポート6,7及び両排気ポート8,9、つま
り、各弁にて囲まれた部分を、前記下部冷却水ジャケッ
ト11a内における冷却水の流れ抵抗の増大を招来する
ことなく、積極的に冷却することができるのである。
On the other hand, a portion 1 of the partition plate 12 inside the intake ports 6 and 7 and the exhaust ports 8 and 9.
By denting 2a downward, the flow velocity of the cooling water in the portion surrounded by both the intake ports 6 and 7 and the exhaust ports 8 and 9 in the lower cooling water jacket 11a can be partially increased. Therefore, it is possible to increase the flow resistance of the cooling water in the lower cooling water jacket 11a at the intake ports 6 and 7 and the exhaust ports 8 and 9 of the cylinder head 4, that is, the portion surrounded by the valves. It can be actively cooled without inviting.

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

【図1】本発明の実施例を示す縦断正面図である。FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

【図2】図1のII−II視断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.

【符号の説明】[Explanation of symbols]

1 シリンダブロック 3 シリンダブロックにおける冷却水ジャ
ケット 4 シリンダヘッド 5 スリーブ 6,7 吸気ポート 8,9 排気ポート 6c,7c,8c,9c 各ポートの筒壁における
縦リブ 11 シリンダヘッドにおける冷却水ジャケ
ット 11a 下部冷却水ジャケット 11b 上部冷却水ジャケット 12 仕切り板 12a 仕切り板のうち各ポートより内側の部
分 13 通孔 14 冷却水通孔
1 Cylinder Block 3 Cooling Water Jacket in Cylinder Block 4 Cylinder Head 5 Sleeve 6,7 Intake Port 8,9 Exhaust Port 6c, 7c, 8c, 9c Vertical Rib in Cylinder Wall of Each Port 11 Cooling Water Jacket in Cylinder Head 11a Lower Cooling Water jacket 11b Upper cooling water jacket 12 Partition plate 12a Part of partition plate inside each port 13 Through hole 14 Cooling water through hole

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 F02F 1/40 A 8503−3G F02M 61/14 320 J 9248−3G F02P 13/00 301 C ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location F02F 1/40 A 8503-3G F02M 61/14 320 J 9248-3G F02P 13/00 301 C

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】シリンダブロックの上面におけるシリンダ
ヘッドに、各々吸気弁を備えた二つの吸気ポートと、各
々排気弁を備えた二つの排気ポートとを、燃料噴射ノズ
ル又は点火栓を収容するスリーブの回りに配設するよう
に設けて成る四弁式内燃機関において、前記シリンダヘ
ッドにおける冷却水ジャケット内に、当該冷却水ジャケ
ットを上下二室に区画する仕切り板を設けて、この仕切
り板よりも下方の下部冷却水ジャケットに、前記シリン
ダブロックにおける冷却水ジャケットを連通し、前記仕
切り板よりも上方の上部冷却水ジャケットにシリンダヘ
ッド外への冷却水出口を設け、更に、前記仕切り板のう
ち少なくとも前記各ポートよりも内側の部分を、下向き
に凹ませる一方、この仕切り板のうち前記スリーブが貫
通する箇所に、前記下部冷却水ジャケットから前記上部
冷却水ジャケットへの冷却水通孔を設けたことを特徴と
する四弁式内燃機関におけるシリンダヘッドの構造。
1. A sleeve for accommodating a fuel injection nozzle or a spark plug in a cylinder head on an upper surface of a cylinder block, two intake ports each having an intake valve and two exhaust ports each having an exhaust valve. In a four-valve internal combustion engine provided so as to be disposed around the partition wall, a partition plate for partitioning the cooling water jacket into upper and lower chambers is provided in the cooling water jacket in the cylinder head, and the partition plate is positioned below the partition plate. The cooling water jacket in the cylinder block is communicated with the lower cooling water jacket of the cylinder block, the cooling water outlet to the outside of the cylinder head is provided in the upper cooling water jacket above the partition plate, and further, at least the partition plate The part inside each port is recessed downward, while the part of this partition plate where the sleeve penetrates Structure of a cylinder head of four-valve internal combustion engine, characterized in that the lower cooling water jacket provided with a cooling water hole to the upper cooling water jacket.
JP4224098A 1992-08-24 1992-08-24 Structure of cylinder head in four-valve internal combustion engine Expired - Fee Related JP2941124B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4224098A JP2941124B2 (en) 1992-08-24 1992-08-24 Structure of cylinder head in four-valve internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4224098A JP2941124B2 (en) 1992-08-24 1992-08-24 Structure of cylinder head in four-valve internal combustion engine

Publications (2)

Publication Number Publication Date
JPH0674042A true JPH0674042A (en) 1994-03-15
JP2941124B2 JP2941124B2 (en) 1999-08-25

Family

ID=16808517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4224098A Expired - Fee Related JP2941124B2 (en) 1992-08-24 1992-08-24 Structure of cylinder head in four-valve internal combustion engine

Country Status (1)

Country Link
JP (1) JP2941124B2 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004038206A1 (en) * 2002-10-25 2004-05-06 Fev Motorentechnik Gmbh Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement
EP1865182A2 (en) * 2006-06-07 2007-12-12 Ford Global Technologies, LLC A cylinder head for an engine
EP1884647A2 (en) * 2006-08-04 2008-02-06 Bayerische Motoren Werke Aktiengesellschaft Liquid-cooled cylinder head for a combustion engine
CN103266961A (en) * 2013-05-27 2013-08-28 安徽江淮汽车股份有限公司 Engine cylinder cover
CN103291487A (en) * 2013-05-27 2013-09-11 安徽江淮汽车股份有限公司 Cooling water system for cylinder heads of engine
CN103511117A (en) * 2013-09-18 2014-01-15 潍柴动力股份有限公司 Diesel engine and cylinder head thereof
JP2014114710A (en) * 2012-12-07 2014-06-26 Nissan Motor Co Ltd Cooling structure of cylinder head
CN103982317A (en) * 2014-04-19 2014-08-13 东风商用车有限公司 High-strength diesel engine cylinder cover
WO2015000616A1 (en) * 2013-07-04 2015-01-08 Avl List Gmbh Cylinder head for an internal combustion engine
CN105392973A (en) * 2013-05-08 2016-03-09 Avl里斯脱有限公司 Cylinder head for an internal combustion engine
CN109915275A (en) * 2019-03-28 2019-06-21 广西玉柴机器股份有限公司 A kind of three way type cylinder cap cooling structure of exhaust duct part necking
US20200088085A1 (en) * 2018-09-18 2020-03-19 Deere & Company Cylinder head with improved valve bridge cooling
US11022020B2 (en) * 2018-09-18 2021-06-01 Deere & Company Cylinder head with improved valve bridge cooling

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004038206A1 (en) * 2002-10-25 2004-05-06 Fev Motorentechnik Gmbh Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement
EP1865182A2 (en) * 2006-06-07 2007-12-12 Ford Global Technologies, LLC A cylinder head for an engine
EP1884647A2 (en) * 2006-08-04 2008-02-06 Bayerische Motoren Werke Aktiengesellschaft Liquid-cooled cylinder head for a combustion engine
EP1884647A3 (en) * 2006-08-04 2008-05-07 Bayerische Motoren Werke Aktiengesellschaft Liquid-cooled cylinder head for a combustion engine
JP2014114710A (en) * 2012-12-07 2014-06-26 Nissan Motor Co Ltd Cooling structure of cylinder head
CN105392973A (en) * 2013-05-08 2016-03-09 Avl里斯脱有限公司 Cylinder head for an internal combustion engine
CN103266961A (en) * 2013-05-27 2013-08-28 安徽江淮汽车股份有限公司 Engine cylinder cover
CN103291487A (en) * 2013-05-27 2013-09-11 安徽江淮汽车股份有限公司 Cooling water system for cylinder heads of engine
US10094326B2 (en) 2013-07-04 2018-10-09 Avl List Gmbh Cylinder head for an internal combustion engine
WO2015000616A1 (en) * 2013-07-04 2015-01-08 Avl List Gmbh Cylinder head for an internal combustion engine
CN105339639A (en) * 2013-07-04 2016-02-17 Avl里斯脱有限公司 Cylinder head for internal combustion engine
CN103511117A (en) * 2013-09-18 2014-01-15 潍柴动力股份有限公司 Diesel engine and cylinder head thereof
CN103982317A (en) * 2014-04-19 2014-08-13 东风商用车有限公司 High-strength diesel engine cylinder cover
CN103982317B (en) * 2014-04-19 2018-03-06 东风商用车有限公司 High-strength diesel engine cylinder cover
US20200088085A1 (en) * 2018-09-18 2020-03-19 Deere & Company Cylinder head with improved valve bridge cooling
US11022020B2 (en) * 2018-09-18 2021-06-01 Deere & Company Cylinder head with improved valve bridge cooling
US11181032B2 (en) * 2018-09-18 2021-11-23 Deere & Company Cylinder head with improved valve bridge cooling
CN109915275A (en) * 2019-03-28 2019-06-21 广西玉柴机器股份有限公司 A kind of three way type cylinder cap cooling structure of exhaust duct part necking

Also Published As

Publication number Publication date
JP2941124B2 (en) 1999-08-25

Similar Documents

Publication Publication Date Title
JP3101336U (en) Cylinder head for liquid-cooled multi-cylinder internal combustion engine
US6279516B1 (en) Cylinder head with two-plane water jacket
US4730579A (en) Internal combustion engine cylinder head with port coolant passage independent of and substantially wider than combustion chamber coolant passage
US7770548B2 (en) Cooling structure of cylinder head
US4714058A (en) Spark-ignited internal combustion engine
JPH0674042A (en) Structure of cylinder head for four-valve type internal combustion engine
JPH065048B2 (en) Liquid-cooled cylinder head
US5868106A (en) Cylinderhead of a multicylinder internal combustion engine
JPH0674041A (en) Structure of cylinder head for four-valve type internal combustion engine
US6817322B2 (en) Cylinder head
JPH0828345A (en) Engine cylinder head
JP3736339B2 (en) Engine cooling structure
EP0208312B1 (en) Cylinder head with coolant passage passing around outside of cylinder head fixing bolt boss and directing coolant flow toward squish area cooling passage portion
CN109854403A (en) Cylinder head and engine with it
JP2866259B2 (en) Structure of cylinder head in four-valve internal combustion engine
EP0203531B1 (en) Cylinder head with coolant passage following squish area and of generally uniform cross sectional area
JPH0121162Y2 (en)
JP2753787B2 (en) Cylinder head for water-cooled multi-cylinder diesel engine
JPH0243025B2 (en)
JP2753788B2 (en) Cylinder head for water-cooled multi-cylinder diesel engine
JP2753786B2 (en) Cylinder head for water-cooled multi-cylinder diesel engine
JPS6026219Y2 (en) Cylinder head of direct injection internal combustion engine
JPH07119541A (en) Siamese type cylinder block structure
JPS6220655A (en) Cooling apparatus for cylinderhead in multicylinder internal-combustion engine
JP3264208B2 (en) Cylinder head cooling structure

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees