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JP3618593B2 - Structure of cylinder head in internal combustion engine - Google Patents

Structure of cylinder head in internal combustion engine Download PDF

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Publication number
JP3618593B2
JP3618593B2 JP22484799A JP22484799A JP3618593B2 JP 3618593 B2 JP3618593 B2 JP 3618593B2 JP 22484799 A JP22484799 A JP 22484799A JP 22484799 A JP22484799 A JP 22484799A JP 3618593 B2 JP3618593 B2 JP 3618593B2
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JP
Japan
Prior art keywords
cooling water
cylinder head
glow plug
cylinder
mounting boss
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 - Fee Related
Application number
JP22484799A
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Japanese (ja)
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JP2001050106A (en
Inventor
一郎 藤村
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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Priority to JP22484799A priority Critical patent/JP3618593B2/en
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    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、水冷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。
【０００２】
【従来の技術】
一般に、ディーゼル機関のうち、燃料をシリンダ内のピストンの頂面に凹み形成した燃焼室内に直接的に噴射供給する直噴式のディーゼル機関において、そのシリンダヘッドには、吸又は排気ポートが設けられることに加えて、燃料噴射ノズル及びグロープラグが、各気筒の略中心にのぞむようにして取付けられ、この場合、前記燃料噴射ノズルは、略中心から上向きに略垂直に立設し、前記吸又は排気ポートは、シリンダヘッドにおける左右両側面のうち一方の側面に開口するように一方の側面側に傾斜する一方、前記グロープラグは、シリンダヘッドの他方の側面から着脱するように他方の側面側に傾斜しているが、一つのシリンダに対する吸又は排気ポートを二つ以上の複数個にする場合には、この複数個の吸又は排気ポートを、前記燃料噴射ノズル及びグロープラグのうちいずれか一方又は両方を挟んでクランク軸の軸線方向に沿った左右両側の部位に配設するという構成にされる。
【０００３】
しかし、従来においては、シリンダヘッド内における冷却水ジャケットを、冷却水が気筒列の方向に流れるように構成しているので、以下に述べるような問題が発生するのであった。
【０００４】
【発明が解決しようとする課題】
すなわち、複数個の吸又は排気ポートを、前記燃料噴射ノズル及びグロープラグのうちいずれか一方又は両方を挟んでクランク軸の軸線方向に沿った左右両側の部位に配設する場合に、シリンダヘッド内における冷却水ジャケットが、冷却水を気筒列の方向に流れるという構成であると、この燃料噴射ノズル及びグロープラグの左右両側に配設されている吸又は排気ポート形成用ボス部が、前記燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部に対する冷却水の流れを妨げることになり、換言すると、前記燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部に対する冷却性が、吸又は排気ポート形成用ボス部のために著しく低下するから、これらボス部の相互間に熱膨張差に起因する亀裂が発生するのであった。
【０００５】
本発明は、この亀裂の発生を確実に低減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。
【０００６】
【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、
「複数個の吸又は排気ポートを一方の側面に開口するように形成する一方、燃焼室内にのぞむ燃料噴射ノズルを気筒の略中心に取付け、更に、燃焼室内にのぞむグロープラグを他方の側面に傾斜するように取付ける一方、内部に、前記吸又は排気ポート形成用ボス部、燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部の周囲を囲う冷却水ジャケットを形成して成るシリンダヘッドにおいて、前記冷却水ジャケット内に、当該冷却水ジャケットを各気筒ごとの冷却水室に区画する仕切り壁を設け、この各冷却水室のうち一方の側面側の部分に、当該冷却水室内への冷却水入り口を設ける一方、他方の側面側の部分に、当該冷却水室からの冷却水出口を設け、この冷却水出口を、前記グロープラグ取付け用ボス部の近接した部位に位置する。」
という構成にした。
【０００７】
【発明の作用・効果】
このように構成することにより、各冷却水室内における冷却水は、一方の側面側における冷却水入り口から各吸又は排気ポート形成用ボス部の周囲、及び燃料噴射ノズル取付け用ボス部の周囲、並びにグロープラグ取付け用ボス部の周囲を巡ったのち、他方の側面側における冷却水出口から流出することになる。
【０００８】
つまり、前記したように構成することで、複数個の吸又は排気ポート形成用ボス部の間に配設されている燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部に対する冷却水の流れが、前記各吸又は排気ポート形成用ボス部にて妨げることを回避できて、前記燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部に対する冷却性を大幅に向上することができるから、前記各ボス部の相互間に亀裂が発生することを確実に低減できる効果を有する。
【０００９】
しかも、前記各冷却水室における冷却水出口を、前記グロープラグ取付け用ボス部の近接した部位に位置することにより、グロープラグ取付け用ボス部の部分をより積極的に冷却できるから亀裂発生の防止の効果を更に助長できる利点がある。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態を、直噴式の二サイクルディーゼル機関に適用した場合を示す図１〜図３の図面について説明する。
【００１１】
この図において、符号１は、シリンダブロックを、符号２は、前記シリンダブロック１の上面に複数本のヘッドボルト３の締結にて取付けられたシリンダヘッドを各々示し、前記シリンダブロック１における各シリンダボア４内には、頂面に燃焼室６を凹み形成して成る往復動ピストン５が設けられている。
【００１２】
また、前記シリンダブロック１には、図示しないラジエータにて冷却された冷却水が導入される冷却水ジャケット７が、前記シリンダボア４の外側を囲うように形成されている。更にまた、前記シリンダブロック１には、図示しないが、各ピストン５が下降動したときにおいてシリンダボア４内に空気を吸入する吸気ポートが設けられている。
【００１３】
一方、前記シリンダヘッド２には、各気筒の中心の部位に燃料噴射ノズル８が、その先端が前記ピストン５における燃焼室６内にのぞむように取付けられていると共に、先端が前記ピストン５における燃焼室６内にのぞむグロープラグ９が、シリンダヘッド２における左右両側面のうち一方の側面側に向かって傾斜するようにして取付けられている。
【００１４】
また、前記シリンダヘッド２の下面には、排気弁１１を備えた排気ポート１０が、前記燃料噴射ノズル８を挟んでクランク軸の軸線１２方向に沿った左右両側と、前記グロープラグ９を挟んでクランク軸の軸線１２方向に沿った左右両側との四つの部位に開口しており、これら四つの排気ポート１０は、下流に向かって横向きに湾曲しながら一つのポートに合流して、前記シリンダヘッド２における他方の側面に開口している。
【００１５】
更にまた、前記シリンダヘッド２の内部には、各気筒における前記排気ポート１０の形成用ボス部１３、燃料噴射ノズル８の取付け用ボス部１４及びグロープラグ９の取付け用ボス部１５の周囲を囲う冷却水ジャケット１６が形成されている。
【００１６】
そして、前記シリンダヘッド２における冷却水ジャケット１６内には、各気筒間をクランク軸の軸線１２と直角の方向に延びる第１仕切り壁１７を設けて、当該冷却水ジャケット１６内を各気筒ごとの冷却水室１８に区画すると共に、シリンダヘッド２における一方の側面側をクランク軸の軸線１２の方向に延びる第２仕切り壁１９を設けて、クランク軸の軸線１２の方向に延びる冷却水出口通路２０を形成する。
【００１７】
前記各冷却水室１８内のうち他方の側面側の部分に、前記シリンダブロック１における冷却水ジャケット７から当該冷却水室１８内への冷却水入り口２１を設ける一方、前記第２仕切り壁１９のうち前記グロープラグ取付け用ボス部１５に近接する部位に、前記冷却水室１８内から前記冷却水出口通路２０への冷却水出口２２を設ける。
【００１８】
この構成において、シリンダブロック１における冷却水ジャケット７内の冷却水は、シリンダヘッド２における各冷却水室１８内に冷却水入り口２１から流入し、各冷却水室１８内を、その冷却水出口２２に向かって、クランク軸の軸線１２と直角の方向に流れる。
【００１９】
この場合において、冷却水の流れ方向から見たとき、四つの各排気ポート１０用ボス部１３は、燃料噴射ノズル取付け用ボス部１４及びグロープラグ取付け用ボス部１５の左右両側に配設されていることにより、クランク軸の軸線１２と直角の方向に流れる冷却水は、図２に矢印で示すように、前記各ボス部１３，１４，１５の相互間を流れて、各ボス部１３，１４，１５の周囲を確実に巡ることになるから、燃料噴射ノズル取付け用ボス部１４及びグロープラグ取付け用ボス部１５に対する冷却性が、四つの排気ポート１０にすることで低下することを確実に回避できるのである。
【００２０】
また、各冷却水室１８からの冷却水出口２２を、前記グロープラグ取付け用ボス部１５に近接する部位に設けたことにより、グロープラグ取付け用ボス部の部分をより積極的に冷却できるのである。
【００２１】
なお、前記各冷却水室１８から冷却水出口２２を通って冷却水出口通路２０に出た冷却水は、これにシリンダブロック１における冷却水ジャケット７における一部の冷却水が通孔２３より合流したのち、図示しないラジエータに送られて冷却され、再び前記シリンダブロック１における冷却水ジャケット７に戻る循環を行う。
【００２２】
前記実施の形態は、シリンダヘッド２に四つの排気ポート１０を設けた二サイクルディーゼル機関に適用した場合であったが、本発明は、これに限らず、シリンダヘッド２に吸気ポートと排気ポートとの両方を設けた四サイクルディーゼル機関にも適用できることはいうまでもない。
【図面の簡単な説明】
【図１】本発明の実施の形態を示す縦断正面図で図２のＩ−Ｉ視断面図である。
【図２】図１のＩＩ−ＩＩ視平断面図である。
【図３】図２のＩＩＩ −ＩＩＩ 視断面図である。
【符号の説明】
１ シリンダブロック
２ シリンダヘッド
４ シリンダボア
５ ピストン
６ 燃焼室
７ シリンダブロックの冷却水ジャケット
８ 燃料噴射ノズル
９ グロープラグ
１０ 排気ポート
１１ 排気弁
１３ 排気ポート形成用ボス部
１４ 燃料噴射ノズル取付け用ボス部
１５ グロープラグ取付け用ボス部
１６ 冷却水ジャケット
１７ 仕切り壁
１８ 冷却水室
２１ 冷却水入り口
２２ 冷却水出口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the structure of a cylinder head in a water-cooled internal combustion engine.
[0002]
[Prior art]
In general, in a diesel engine of a direct injection type that directly injects fuel into a combustion chamber that is recessed in the top surface of a piston in a cylinder, the cylinder head is provided with an intake or exhaust port. In addition, the fuel injection nozzle and the glow plug are mounted so as to look at the approximate center of each cylinder. In this case, the fuel injection nozzle is provided to stand substantially vertically upward from the approximate center and the intake or exhaust port. Is inclined to one side surface so as to open to one of the left and right side surfaces of the cylinder head, while the glow plug is inclined to the other side surface so as to be attached to and detached from the other side surface of the cylinder head. However, when two or more intake or exhaust ports for one cylinder are used, the plurality of intake or exhaust ports are connected to Is the configuration in which arranged on the site of the right and left sides in the axial direction of the crankshaft across the either or both of the fuel injection nozzle and the glow plug.
[0003]
However, conventionally, since the cooling water jacket in the cylinder head is configured such that the cooling water flows in the direction of the cylinder row, the following problems occur.
[0004]
[Problems to be solved by the invention]
That is, when a plurality of intake or exhaust ports are disposed in the left and right side portions along the axial direction of the crankshaft with either one or both of the fuel injection nozzle and the glow plug interposed therebetween, When the cooling water jacket is configured to flow the cooling water in the direction of the cylinder row, the intake or exhaust port forming boss portions provided on the left and right sides of the fuel injection nozzle and the glow plug are provided with the fuel injection. The flow of cooling water to the nozzle mounting boss and the glow plug mounting boss is obstructed, in other words, the cooling performance of the fuel injection nozzle mounting boss and the glow plug mounting boss is determined by the intake or exhaust port. Since the formation boss portion is significantly lowered, a crack caused by a difference in thermal expansion occurs between the boss portions.
[0005]
It is a technical object of the present invention to provide a cylinder head structure that can reliably reduce the occurrence of cracks.
[0006]
[Means for Solving the Problems]
In order to achieve this technical problem, the present invention
“A plurality of intake or exhaust ports are formed so as to open on one side, a fuel injection nozzle looking into the combustion chamber is attached to the approximate center of the cylinder, and a glow plug looking into the combustion chamber is inclined to the other side. In the cylinder head formed by forming a cooling water jacket inside the boss portion for forming the suction or exhaust port, the boss portion for attaching the fuel injection nozzle, and the boss portion for attaching the glow plug, A partition wall for partitioning the cooling water jacket into a cooling water chamber for each cylinder is provided in the cooling water jacket, and a cooling water inlet to the cooling water chamber is provided on one side of each cooling water chamber. while providing the portion of the other side, the cooling water outlet from the cooling water chamber is provided, the cooling water outlet, the proximate portion of the glow plug mounting boss Location to. "
It was configured as follows.
[0007]
[Operation and effect of the invention]
By configuring in this way, the cooling water in each cooling water chamber is allowed to flow from the cooling water inlet on one side to the periphery of each suction or exhaust port forming boss, the periphery of the fuel injection nozzle mounting boss, and After going around the glow plug mounting boss, it flows out from the cooling water outlet on the other side.
[0008]
In other words, by configuring as described above, the flow of the cooling water to the fuel injection nozzle mounting boss portion and the glow plug mounting boss portion disposed between the plurality of suction or exhaust port forming boss portions. Since it is possible to avoid obstruction at each of the suction or exhaust port forming boss portions, the cooling performance for the fuel injection nozzle mounting boss portion and the glow plug mounting boss portion can be greatly improved. This has the effect of reliably reducing the occurrence of cracks between the boss portions.
[0009]
Moreover, since the cooling water outlets in the respective cooling water chambers are positioned in close proximity to the glow plug mounting boss portion, the glow plug mounting boss portion can be more actively cooled, thereby preventing the occurrence of cracks. There is an advantage that the effect of can be further promoted.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 showing the case where an embodiment of the present invention is applied to a direct injection two-cycle diesel engine.
[0011]
In this figure, reference numeral 1 denotes a cylinder block, and reference numeral 2 denotes a cylinder head attached to the upper surface of the cylinder block 1 by fastening a plurality of head bolts 3, and each cylinder bore 4 in the cylinder block 1 is shown. Inside, a reciprocating piston 5 having a combustion chamber 6 formed in a recess on the top surface is provided.
[0012]
The cylinder block 1 is formed with a cooling water jacket 7 into which cooling water cooled by a radiator (not shown) is introduced so as to surround the outside of the cylinder bore 4. Further, the cylinder block 1 is provided with an intake port (not shown) for sucking air into the cylinder bore 4 when each piston 5 moves downward.
[0013]
On the other hand, a fuel injection nozzle 8 is attached to the cylinder head 2 at the center of each cylinder so that the tip of the fuel injection nozzle 8 looks into the combustion chamber 6 of the piston 5. A glow plug 9 looking into the chamber 6 is attached so as to incline toward one of the left and right side surfaces of the cylinder head 2.
[0014]
Further, an exhaust port 10 having an exhaust valve 11 is provided on the lower surface of the cylinder head 2 with both the left and right sides along the axis 12 direction of the crankshaft sandwiching the fuel injection nozzle 8 and the glow plug 9 interposed therebetween. The four exhaust ports 10 are opened at four portions on the left and right sides along the direction of the axis 12 of the crankshaft, and the four exhaust ports 10 merge into one port while being curved laterally toward the downstream side. 2 is open on the other side surface.
[0015]
Furthermore, the cylinder head 2 surrounds the boss portion 13 for forming the exhaust port 10, the mounting boss portion 14 for the fuel injection nozzle 8, and the mounting boss portion 15 for the glow plug 9 in each cylinder. A cooling water jacket 16 is formed.
[0016]
In the cooling water jacket 16 of the cylinder head 2, a first partition wall 17 extending between the cylinders in a direction perpendicular to the axis 12 of the crankshaft is provided, and the cooling water jacket 16 is provided for each cylinder. A cooling water outlet passage 20 extending in the direction of the crankshaft axis 12 is provided by partitioning the cooling water chamber 18 and providing a second partition wall 19 extending on one side of the cylinder head 2 in the direction of the axis 12 of the crankshaft. Form.
[0017]
In each of the cooling water chambers 18, a cooling water inlet 21 from the cooling water jacket 7 in the cylinder block 1 to the cooling water chamber 18 is provided in a portion on the other side surface side, while the second partition wall 19 Among them, a cooling water outlet 22 from the inside of the cooling water chamber 18 to the cooling water outlet passage 20 is provided in a portion close to the glow plug mounting boss portion 15.
[0018]
In this configuration, the cooling water in the cooling water jacket 7 in the cylinder block 1 flows into the cooling water chambers 18 in the cylinder head 2 from the cooling water inlets 21, and the cooling water outlets 22 pass through the cooling water chambers 18. In the direction perpendicular to the axis 12 of the crankshaft.
[0019]
In this case, when viewed from the flow direction of the cooling water, the four boss portions 13 for the exhaust ports 10 are disposed on the left and right sides of the boss portion 14 for attaching the fuel injection nozzle and the boss portion 15 for attaching the glow plug. As a result, the coolant flowing in the direction perpendicular to the axis 12 of the crankshaft flows between the boss portions 13, 14, 15 as shown by arrows in FIG. , 15 is surely circulated around the fuel injection nozzle mounting boss portion 14 and the glow plug mounting boss portion 15, so that it is reliably avoided that the cooling performance of the four exhaust ports 10 decreases. It can be done.
[0020]
Further, by providing the cooling water outlet 22 from each cooling water chamber 18 at a position close to the glow plug mounting boss portion 15, the glow plug mounting boss portion can be more actively cooled. .
[0021]
Note that the cooling water that has flowed out of the cooling water chambers 18 through the cooling water outlets 22 into the cooling water outlet passage 20 is combined with a part of the cooling water in the cooling water jacket 7 in the cylinder block 1 from the through holes 23. After that, it is sent to a radiator (not shown), cooled, and circulated back to the cooling water jacket 7 in the cylinder block 1 again.
[0022]
The above embodiment is a case where the present invention is applied to a two-cycle diesel engine in which four exhaust ports 10 are provided in the cylinder head 2, but the present invention is not limited to this, and an intake port and an exhaust port are provided in the cylinder head 2. Needless to say, the present invention can also be applied to a four-cycle diesel engine provided with both.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing an embodiment of the present invention, and is a cross-sectional view taken along line II in FIG.
2 is a sectional view taken along the line II-II in FIG.
3 is a sectional view taken along line III-III in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder block 2 Cylinder head 4 Cylinder bore 5 Piston 6 Combustion chamber 7 Cylinder block cooling water jacket 8 Fuel injection nozzle 9 Glow plug 10 Exhaust port 11 Exhaust valve 13 Exhaust port formation boss part 14 Fuel injection nozzle attachment boss part 15 Glow Plug mounting boss 16 Cooling water jacket 17 Partition wall 18 Cooling water chamber 21 Cooling water inlet 22 Cooling water outlet

Claims (1)

複数個の吸又は排気ポートを一方の側面に開口するように形成する一方、燃焼室内にのぞむ燃料噴射ノズルを気筒の略中心に取付け、更に、燃焼室内にのぞむグロープラグを他方の側面に傾斜するように取付ける一方、内部に、前記吸又は排気ポート形成用ボス部、燃料噴射ノズル取付け用ボス部及びグロープラグ取付け用ボス部の周囲を囲う冷却水ジャケットを形成して成るシリンダヘッドにおいて、前記冷却水ジャケット内に、当該冷却水ジャケットを各気筒ごとの冷却水室に区画する仕切り壁を設け、この各冷却水室のうち一方の側面側の部分に、当該冷却水室内への冷却水入り口を設ける一方、他方の側面側の部分に、当該冷却水室からの冷却水出口を設け、この冷却水出口を、前記グロープラグ取付け用ボス部の近接した部位に位置することを特徴とする内燃機関におけるシリンダヘッドの構造。A plurality of intake or exhaust ports are formed so as to open on one side, a fuel injection nozzle looking into the combustion chamber is attached to the approximate center of the cylinder, and a glow plug looking into the combustion chamber is inclined to the other side In the cylinder head, a cooling water jacket surrounding the suction or exhaust port forming boss, the fuel injection nozzle mounting boss, and the glow plug mounting boss is formed in the cylinder head. A partition wall that divides the cooling water jacket into cooling water chambers for each cylinder is provided in the water jacket, and a cooling water inlet to the cooling water chamber is provided in a portion on one side of each cooling water chamber. providing one, to a portion of the other side, the cooling water outlet from the cooling water chamber is provided, the cooling water outlet, positions in proximity to the site of the glow plug mounting boss Structure of a cylinder head in an internal combustion engine, characterized by.
JP22484799A 1999-08-09 1999-08-09 Structure of cylinder head in internal combustion engine Expired - Fee Related JP3618593B2 (en)

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Cited By (1)

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CN105478719A (en) * 2015-12-14 2016-04-13 中国北方发动机研究所(天津) Casting method of cylinder cover having middle division plate in anti-crack structure

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FR2882791B1 (en) * 2005-03-07 2010-04-30 Renault Sas INTERNAL COMBUSTION ENGINE HEAD OF A MOTOR VEHICLE COMPRISING A TWO-PART WATER CORE
DE102005050510A1 (en) * 2005-10-21 2007-04-26 Bayerische Motoren Werke Ag Cylinder head for a water-cooled internal combustion engine comprises a coolant channel having a flow cross-section which is constant in the flow direction of the coolant from an inlet opening up to a collection channel
DE102015103905A1 (en) * 2015-03-17 2016-09-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Cylinder head for an internal combustion engine with coolant channels
JP2017040175A (en) * 2015-08-17 2017-02-23 いすゞ自動車株式会社 Cooling structure of cylinder head
KR102108929B1 (en) * 2016-10-10 2020-05-13 현대자동차(주) Water jacket of cylinder head
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105478719A (en) * 2015-12-14 2016-04-13 中国北方发动机研究所(天津) Casting method of cylinder cover having middle division plate in anti-crack structure

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