WO2014073413A1 - Cylinder head gasket - Google Patents

Cylinder head gasket Download PDF

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Publication number
WO2014073413A1
WO2014073413A1 PCT/JP2013/079182 JP2013079182W WO2014073413A1 WO 2014073413 A1 WO2014073413 A1 WO 2014073413A1 JP 2013079182 W JP2013079182 W JP 2013079182W WO 2014073413 A1 WO2014073413 A1 WO 2014073413A1
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WO
WIPO (PCT)
Prior art keywords
cylinder head
slit
head gasket
bead
water
Prior art date
Application number
PCT/JP2013/079182
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French (fr)
Japanese (ja)
Inventor
岳男 森本
Original Assignee
Nok株式会社
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Application filed by Nok株式会社 filed Critical Nok株式会社
Publication of WO2014073413A1 publication Critical patent/WO2014073413A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J15/0825—Flat gaskets laminated
    • 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
    • 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
    • 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
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/085—Flat gaskets without fold over
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/0868—Aspects not related to the edges of the gasket

Definitions

  • the present invention relates to a cylinder head gasket interposed between a cylinder block and a cylinder head in an engine.
  • a gasket (cylinder head gasket) is interposed between a cylinder block and a cylinder head in an engine for automobiles, etc., and combustion gas, cooling water, oil from between the cylinder block and the cylinder head is provided by the cylinder head gasket. Etc. are prevented.
  • metal gaskets having excellent heat resistance and good elasticity and thermal conductivity are widely used.
  • FIG. 6 is a partial plan view schematically showing a conventional cylinder head gasket
  • FIG. 7 is a partial cross-sectional view showing a mounted state thereof.
  • the cylinder head gasket 100 is interposed between the abutting surfaces of a cylinder block 200 and a cylinder head 300 of a multi-cylinder engine having a plurality of combustion chambers S (for example, an in-line four-cylinder engine). It is fastened and fixed by the illustrated bolt, and is composed of two upper and lower bead plates 101, 101 and an intermediate plate 102 sandwiched between the bead plates 101, 101.
  • the bead plate 101 includes a plurality of combustion chamber openings 101a, 101a,... Corresponding to the combustion chambers S, and beads that surround the combustion chamber openings 101a independently of each other. 101b, bolt insertion holes 101c, 101c,... And a plurality of cooling water holes (not shown) are formed.
  • a bead is not formed in the intermediate plate 102, but corresponding to the bead plate 101, a combustion chamber opening 102a (see FIG. 7), a bolt insertion hole (not shown), and a cooling water hole are formed. .
  • the cylinder heads 300 communicate with each other through the plurality of cooling water holes (see the following patent document).
  • the present invention has been made in view of the above points, and its technical problem is to effectively prevent the deterioration of the sealing performance and damage of the cylinder head gasket between the combustion chambers that are likely to become high temperatures. There is to do.
  • a cylinder head gasket according to the invention of claim 1 is provided between a cylinder block and a cylinder head including a plurality of combustion chambers and a water jacket surrounding the combustion chambers. And a plurality of bead plates formed with beads arranged along the outer periphery of the plurality of combustion chamber openings corresponding to the respective combustion chambers, and an intermediate plate sandwiched therebetween.
  • a cooling water flow path having both ends communicating with the water jacket is formed by the water guiding holes. Therefore, the cooling water from the water jacket can be circulated between the combustion chambers that are likely to become high temperature.
  • a cylinder head gasket according to a second aspect of the present invention is the cylinder head gasket according to the first aspect, wherein one of the water conveyance holes located at both ends of the slit is located relatively upstream in the water jacket, and the other The water guide hole is located on the relatively downstream side.
  • a cylinder head gasket according to a third aspect of the present invention is the cylinder head gasket according to the first or second aspect, wherein one of the water conveyance holes located at both ends of the slit is provided on one of the upper and lower bead plates of the intermediate plate. The other water introduction hole is opened in one or the other of the upper and lower bead plates of the intermediate plate.
  • a cooling water flow path is formed between the beads on the outer periphery of the combustion chamber opening by a long slit formed in the intermediate plate, and a part of the cooling water of the water jacket is formed. Therefore, it is possible to effectively prevent the deterioration of the sealing performance of the cylinder head gasket between the combustion chambers that are likely to become high temperature, the occurrence of damage, and the like.
  • FIG. 1 is a partial plan view schematically showing a preferred embodiment of a cylinder head gasket according to the present invention.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a principal part section perspective view showing a desirable embodiment of a cylinder head gasket concerning the present invention. It is a principal part section perspective view showing an intermediate board in a desirable embodiment of a cylinder head gasket concerning the present invention.
  • FIG. 5 is an explanatory view showing an example of a cooling water flow path in a preferred embodiment of the cylinder head gasket according to the present invention as a VV cross section of FIG. 2. It is a partial top view which shows roughly an example of the cylinder head gasket which concerns on a prior art.
  • FIG. 7 is a sectional view taken along line BB in FIG.
  • the cylinder head gasket 1 is interposed between the abutting surfaces of a cylinder block 2 and a cylinder head 3 of a multi-cylinder engine having a plurality of combustion chambers S (for example, an in-line four-cylinder engine). It is fastened and fixed by the illustrated bolts, and comprises two upper and lower bead plates 11, 11 and an intermediate plate 12 sandwiched between the bead plates 11, 11.
  • the bead plate 11 and the intermediate plate 12 are made of a metal plate having excellent heat resistance and good elasticity and thermal conductivity, or made of a rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity). It is made of a composite material coated with a thin film.
  • each bead plate 11 surrounds a plurality of combustion chamber openings 11a, 11a,... Corresponding to the combustion chambers S and the combustion chamber openings 11a independently of each other.
  • the intermediate plate 12 has a flat plate shape on which no bead is formed.
  • the combustion chamber opening 12a corresponds to the bead plate 11
  • the bolt insertion hole 12c corresponds to the bead plate 11
  • a cooling water (not shown).
  • a hole is formed.
  • Reference numeral 4 in FIG. 1 is a water jacket continuously formed so as to surround each combustion chamber S across the cylinder block 2 and the cylinder head 3, and the water jacket 4 on both upper and lower sides of the cylinder head gasket 1. Are communicated with each other through the plurality of cooling water holes.
  • the beads 11b in the bead plate 11 are brought into close contact with the upper and lower surfaces of the intermediate plate 12 in a state of being appropriately compressed and deformed by the fastening force of the bolts that couple the cylinder block 2 and the cylinder head 3 together in the stacked state shown in FIG. It is like that.
  • the intermediate plate 12 includes combustion chamber openings 12 a and 12 a that are located between the adjacent combustion chamber openings 12 a and 12 a and in close contact with the beads 11 b and 11 b.
  • combustion chamber openings 12 a and 12 a that are located between the adjacent combustion chamber openings 12 a and 12 a and in close contact with the beads 11 b and 11 b.
  • elongated holes 12b extending in a direction orthogonal to the row direction, and end holes 12d are extended at both ends of each slit 12b.
  • the bead plate 11 has circular water guides having the same diameter as the end holes 12d at positions corresponding to the end holes 12d at both ends of the slits 12b in the intermediate plate 12, respectively.
  • the hole 11d is opened, and the passage wall 11e covers the slits 12b from above and below.
  • the water guide holes 11 d and 11 d are located in an opening region of the water jacket 4 on the abutting surface of the cylinder block 2 or the abutting surface of the cylinder head 3.
  • the water guide holes 11d and 11d communicate the end holes 12d at both ends of the slit 12b with the water jacket 4 on the cylinder block 2 side or the cylinder head 3 side, and are therefore shown in FIG. 2 or FIG.
  • the stacked state between the beads 11b and 11b between the combustion chamber openings 12a and 12a adjacent to each other, there is a slit 12b, passage wall portions 11e and 11e covering the upper and lower sides, and end holes at both ends of the slit 12b.
  • a cooling water flow path 10 having both ends communicating with the water jacket 4 is formed by 12d and the water guide hole 11d.
  • both the water guide holes 11d located at both ends of the slit 12b may be provided in one of the upper and lower bead plates 11, 11, or
  • the water guide hole 11d may be provided in the upper bead plate 11, and the other water guide hole 11d may be provided in the lower bead plate 11.
  • the water guide hole 11d located at one end of the slit 12b is opened in the lower bead plate 11 and the water guide hole 11d located at the other end is opened in the upper bead plate 11.
  • the water guide holes 11d located at both ends of the slit 12b are both opened in the lower bead plate 11, and in the example shown in FIG.
  • the water guide holes 11d located at both ends of 12b are formed in both the upper and lower bead plates 11, and in the example shown in FIG. 5D, the water guide holes located at both ends of the slit 12b as in FIG. 5C.
  • the lower water guide hole 11d is formed in both the upper and lower bead plates 11, and at one end of the slit 12b, the lower water guide hole 11d has the same diameter as the end hole 12d, and the upper water guide hole 11d has a smaller diameter than the end hole 12d.
  • the upper water guide hole 11d has the same diameter as the end hole 12d and the lower water guide hole 11d has a smaller diameter than the end hole 12d at the other end of the lid 12b.
  • the water guide holes 11d located at both ends of the slit 12b are respectively opened in the upper and lower bead plates 11, and the lower water guide holes 11d are both end holes 12d.
  • Both the same diameter and upper water guide holes 11d are smaller than the end hole 12d.
  • the positional relationship and size relationship of the water guide holes 11d are appropriately set according to the direction of the flow of the cooling water in the water jacket 4, and are opposite to the illustrated example with respect to the top and bottom or the left and right. Also good.
  • a cooling water flow path 10 having both ends communicating with the water jacket 4 is formed by the end holes 12d and the water guide holes 11d at both ends of 12b, so that the description will be given first between the combustion chambers S, S,.
  • the cooling water from the water jacket 4 can be circulated between the combustion chambers S, S,... Without forming the groove 201 as shown in FIG.
  • the cooling water flow path 10 includes As indicated by the arrows inside, a flow of cooling water from the upstream side to the downstream side is caused. Therefore, the intermediate plate 12 and the upper and lower bead plates 11, 11 are cooled at the portion in contact with the cooling water flow path 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)

Abstract

The present invention effectively prevents the occurrence of a decrease, loss, or the like of the sealing performance of a cylinder head gasket (1) between combustion chambers (S, S) that easily reach high temperatures. To achieve said objective, the cylinder head gasket (1) is interposed between a cylinder head and a cylinder block provided with a plurality of combustion chambers (S, S, …) and a water jacket (4) encircling the combustion chambers (S, S, …), and results from laminating: a plurality of bead plates (11) at which beads (11b) provided along the outer periphery of a plurality of combustion chamber openings (11a) corresponding to each combustion chamber (S) are formed; and an intermediate plate (12) sandwiched between the plurality of bead plates (11). An elongated-hole-shaped slit (12b) extending along the position of contact between neighboring beads (11b, 11b) is formed at the intermediate plate (12). The bead plates (11) are provided with a water conveyance hole (11d) having a duct wall (11e) covering above and below the slit (12b) and interconnects both ends of the slit (12b) with the water jacket (4) at the cylinder head side or the cylinder block side, respectively.

Description

シリンダヘッドガスケットCylinder head gasket
　本発明は、エンジンにおけるシリンダブロックとシリンダヘッドの間に介装されるシリンダヘッドガスケットに関する。 The present invention relates to a cylinder head gasket interposed between a cylinder block and a cylinder head in an engine.
　自動車用などのエンジンにおけるシリンダブロックとシリンダヘッドとの間にはガスケット（シリンダヘッドガスケット）を介装し、このシリンダヘッドガスケットによって、シリンダブロックとシリンダヘッドとの間からの燃焼ガス、冷却水、油等の漏洩を防止している。この種のシリンダヘッドガスケットとしては、耐熱性に優れ、良好な弾性や熱伝導性を有するメタルガスケットが広く使用されている。 A gasket (cylinder head gasket) is interposed between a cylinder block and a cylinder head in an engine for automobiles, etc., and combustion gas, cooling water, oil from between the cylinder block and the cylinder head is provided by the cylinder head gasket. Etc. are prevented. As this type of cylinder head gasket, metal gaskets having excellent heat resistance and good elasticity and thermal conductivity are widely used.
　図６は従来のシリンダヘッドガスケットを概略的に示す部分的な平面図であり、図７はその装着状態を示す部分的な断面図である。このシリンダヘッドガスケット１００は、図７に示すように、複数の燃焼室Ｓを有する多気筒エンジン（例えば直列４気筒エンジン）のシリンダブロック２００とシリンダヘッド３００の衝合面間に介装され、不図示のボルトによって締め付け固定されるものであって、上下二枚のビード板１０１、１０１と、このビード板１０１、１０１の間に挟み込まれた中間板１０２とからなる。 FIG. 6 is a partial plan view schematically showing a conventional cylinder head gasket, and FIG. 7 is a partial cross-sectional view showing a mounted state thereof. As shown in FIG. 7, the cylinder head gasket 100 is interposed between the abutting surfaces of a cylinder block 200 and a cylinder head 300 of a multi-cylinder engine having a plurality of combustion chambers S (for example, an in-line four-cylinder engine). It is fastened and fixed by the illustrated bolt, and is composed of two upper and lower bead plates 101, 101 and an intermediate plate 102 sandwiched between the bead plates 101, 101.
　図６に示すように、ビード板１０１には、各燃焼室Ｓに対応する複数の燃焼室用開口１０１ａ，１０１ａ，・・・と、これら各燃焼室用開口１０１ａを互いに独立して包囲するビード１０１ｂと、ボルト挿通孔１０１ｃ，１０１ｃ，・・・と、不図示の複数の冷却水用孔が形成されている。一方、中間板１０２にはビードは形成されていないが、ビード板１０１と対応して、燃焼室用開口１０２ａ（図７参照）及び不図示のボルト挿通孔や冷却水用孔が形成されている。図６における参照符号４００は、シリンダブロック２００及びシリンダヘッド３００にまたがって、各燃焼室Ｓを包囲するように連続して形成されたウォータージャケットであり、このウォータージャケット４００は、シリンダブロック２００側とシリンダヘッド３００側の間で、前記複数の冷却水用孔を介して互いに連通している（下記の特許文献参照）。 As shown in FIG. 6, the bead plate 101 includes a plurality of combustion chamber openings 101a, 101a,... Corresponding to the combustion chambers S, and beads that surround the combustion chamber openings 101a independently of each other. 101b, bolt insertion holes 101c, 101c,... And a plurality of cooling water holes (not shown) are formed. On the other hand, a bead is not formed in the intermediate plate 102, but corresponding to the bead plate 101, a combustion chamber opening 102a (see FIG. 7), a bolt insertion hole (not shown), and a cooling water hole are formed. . A reference numeral 400 in FIG. 6 is a water jacket continuously formed so as to surround each combustion chamber S across the cylinder block 200 and the cylinder head 300, and the water jacket 400 is connected to the cylinder block 200 side. The cylinder heads 300 communicate with each other through the plurality of cooling water holes (see the following patent document).
特開平１１－１５９６２１号公報JP 11-159621 A
　ところが、隣接する燃焼室Ｓ，Ｓ，・・・間はウォータージャケット４００が存在しないので高温になりやすく、このため、シリンダヘッドガスケット１００におけるビード板１０１のビード１０１ｂに、熱によるヘタリなどを生じて密封性能の低下や破損をきたすおそれがある。そしてその対策としては、図７に示すように、シリンダブロック２００に、燃焼室Ｓ，Ｓ，・・・間に位置して通水用の溝２０１を形成し、この溝２０１にウォータージャケット４００からの冷却水を流すことでシリンダヘッドガスケット１００の熱負荷を低減させることが知られているが、近年、エンジンの小型軽量化に伴い、燃焼室Ｓ，Ｓ，・・・間の間隔が狭くなり、冷却水用の溝２０１を形成することが困難になっている。 However, since the water jacket 400 does not exist between the adjacent combustion chambers S, S,..., The temperature tends to be high, and therefore, the bead 101b of the bead plate 101 in the cylinder head gasket 100 causes heat settling or the like. There is a risk of sealing performance degradation or damage. As a countermeasure, as shown in FIG. 7, a water passage groove 201 is formed in the cylinder block 200 between the combustion chambers S, S,... Although it is known that the thermal load of the cylinder head gasket 100 is reduced by flowing the cooling water, the space between the combustion chambers S, S,... It is difficult to form the cooling water groove 201.
　本発明は、以上のような点に鑑みてなされたものであって、その技術的課題は、高温になりやすい燃焼室間でのシリンダヘッドガスケットのシール性低下や損傷等の発生を有効に防止することにある。 The present invention has been made in view of the above points, and its technical problem is to effectively prevent the deterioration of the sealing performance and damage of the cylinder head gasket between the combustion chambers that are likely to become high temperatures. There is to do.
　上述した技術的課題を有効に解決するための手段として、請求項１の発明に係るシリンダヘッドガスケットは、複数の燃焼室及びこれらの燃焼室を包囲するウォータージャケットを備えるシリンダブロックとシリンダヘッドの間に介装され、前記各燃焼室に対応する複数の燃焼室用開口の外周に沿って周設されたビードが形成された複数のビード板と、その間に挟み込まれる中間板とを積層してなるシリンダヘッドガスケットであって、前記中間板に、互いに隣接する燃焼室用開口の間で前記ビードとの密接位置の間に沿って延びる長孔状のスリットが形成され、前記ビード板に、前記スリットの上下を覆う通路壁部を有すると共に、前記スリットの両端をそれぞれ前記シリンダブロック側又は前記シリンダヘッド側のウォータージャケットに連通させる導水孔が開設されたものである。 As a means for effectively solving the technical problem described above, a cylinder head gasket according to the invention of claim 1 is provided between a cylinder block and a cylinder head including a plurality of combustion chambers and a water jacket surrounding the combustion chambers. And a plurality of bead plates formed with beads arranged along the outer periphery of the plurality of combustion chamber openings corresponding to the respective combustion chambers, and an intermediate plate sandwiched therebetween. A cylinder head gasket, wherein the intermediate plate is formed with a slit having a long hole extending between adjacent combustion chamber openings and in close contact with the bead, and the slit is formed in the bead plate. And both ends of the slit are respectively connected to the water jacket on the cylinder block side or the cylinder head side. In which the water guide hole is opened to communicate the.
　上述の構成によれば、隣接する燃焼室用開口の間に、中間板に形成されたスリットと、その上下を覆うビード板の通路壁部と、スリットの両端に位置してビード板に開設された導水孔によって、両端がウォータージャケットに連通した冷却水流路が形成される。したがって、高温になりやすい燃焼室間に、ウォータージャケットからの冷却水を流通させることができる。 According to the above-described configuration, the slit formed in the intermediate plate between the adjacent combustion chamber openings, the passage wall portion of the bead plate covering the upper and lower sides thereof, and the bead plate opened at both ends of the slit. A cooling water flow path having both ends communicating with the water jacket is formed by the water guiding holes. Therefore, the cooling water from the water jacket can be circulated between the combustion chambers that are likely to become high temperature.
　請求項２の発明に係るシリンダヘッドガスケットは、請求項１に記載の構成において、スリットの両端に位置する導水孔のうちの一方の導水孔がウォータージャケットにおける相対的に上流側に位置し、他方の導水孔が相対的に下流側に位置するものである。 A cylinder head gasket according to a second aspect of the present invention is the cylinder head gasket according to the first aspect, wherein one of the water conveyance holes located at both ends of the slit is located relatively upstream in the water jacket, and the other The water guide hole is located on the relatively downstream side.
　請求項３の発明に係るシリンダヘッドガスケットは、請求項１又は２に記載の構成において、スリットの両端に位置する導水孔のうちの一方の導水孔が中間板の上下のビード板のうち一方に開設され、他方の導水孔が中間板の上下のビード板のうち一方又は他方に開設されたものである。 A cylinder head gasket according to a third aspect of the present invention is the cylinder head gasket according to the first or second aspect, wherein one of the water conveyance holes located at both ends of the slit is provided on one of the upper and lower bead plates of the intermediate plate. The other water introduction hole is opened in one or the other of the upper and lower bead plates of the intermediate plate.
　本発明に係るシリンダヘッドガスケットによれば、燃焼室用開口の外周のビード間に、中間板に形成した長孔状のスリットによる冷却水の流路が形成され、ウォータージャケットの冷却水の一部が流通可能となるため、高温になりやすい燃焼室間でのシリンダヘッドガスケットのシール性低下や損傷等の発生を有効に防止することができる。 According to the cylinder head gasket of the present invention, a cooling water flow path is formed between the beads on the outer periphery of the combustion chamber opening by a long slit formed in the intermediate plate, and a part of the cooling water of the water jacket is formed. Therefore, it is possible to effectively prevent the deterioration of the sealing performance of the cylinder head gasket between the combustion chambers that are likely to become high temperature, the occurrence of damage, and the like.
本発明に係るシリンダヘッドガスケットの好ましい実施の形態を概略的に示す部分的な平面図である。1 is a partial plan view schematically showing a preferred embodiment of a cylinder head gasket according to the present invention. 図１のＡ－Ａ断面図である。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 本発明に係るシリンダヘッドガスケットの好ましい実施の形態を示す要部断面斜視図である。It is a principal part section perspective view showing a desirable embodiment of a cylinder head gasket concerning the present invention. 本発明に係るシリンダヘッドガスケットの好ましい実施の形態における中間板を示す要部断面斜視図である。It is a principal part section perspective view showing an intermediate board in a desirable embodiment of a cylinder head gasket concerning the present invention. 本発明に係るシリンダヘッドガスケットの好ましい実施の形態における冷却水流路の例を、図２のＶ－Ｖ断面として示す説明図である。FIG. 5 is an explanatory view showing an example of a cooling water flow path in a preferred embodiment of the cylinder head gasket according to the present invention as a VV cross section of FIG. 2. 従来技術に係るシリンダヘッドガスケットの一例を概略的に示す部分的な平面図である。It is a partial top view which shows roughly an example of the cylinder head gasket which concerns on a prior art. 図６のＢ－Ｂ断面図である。FIG. 7 is a sectional view taken along line BB in FIG.
　以下、本発明に係るシリンダヘッドガスケットの好ましい実施の形態について、図面を参照しながら説明する。 Hereinafter, a preferred embodiment of a cylinder head gasket according to the present invention will be described with reference to the drawings.
　図２に示すように、このシリンダヘッドガスケット１は、複数の燃焼室Ｓを有する多気筒エンジン（例えば直列４気筒エンジン）のシリンダブロック２とシリンダヘッド３の衝合面間に介装され、不図示のボルトによって締め付け固定されるものであって、上下二枚のビード板１１、１１と、このビード板１１、１１の間に挟み込まれた中間板１２とからなる。ビード板１１及び中間板１２は耐熱性に優れ良好な弾性や熱伝導性を有する金属板で製作され、又はこの金属板をゴム状弾性材料（ゴム材料又はゴム状弾性を有する合成樹脂材料）の薄膜でコーティングした複合材料で製作されたものである。 As shown in FIG. 2, the cylinder head gasket 1 is interposed between the abutting surfaces of a cylinder block 2 and a cylinder head 3 of a multi-cylinder engine having a plurality of combustion chambers S (for example, an in-line four-cylinder engine). It is fastened and fixed by the illustrated bolts, and comprises two upper and lower bead plates 11, 11 and an intermediate plate 12 sandwiched between the bead plates 11, 11. The bead plate 11 and the intermediate plate 12 are made of a metal plate having excellent heat resistance and good elasticity and thermal conductivity, or made of a rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity). It is made of a composite material coated with a thin film.
　図１に示すように、各ビード板１１には、各燃焼室Ｓに対応する複数の燃焼室用開口１１ａ，１１ａ，・・・と、これら各燃焼室用開口１１ａを互いに独立して包囲するビード１１ｂと、シリンダブロック２とシリンダヘッド３を互いに結合するボルトを挿通するためのボルト挿通孔１１ｃ，１１ｃ，・・・と、不図示の複数の冷却水用孔が形成されている。 As shown in FIG. 1, each bead plate 11 surrounds a plurality of combustion chamber openings 11a, 11a,... Corresponding to the combustion chambers S and the combustion chamber openings 11a independently of each other. A bead 11b, bolt insertion holes 11c, 11c,... For inserting bolts for connecting the cylinder block 2 and the cylinder head 3 to each other, and a plurality of cooling water holes (not shown) are formed.
　一方、中間板１２はビードが形成されていない平板状であって、ビード板１１と対応して、燃焼室用開口１２ａ（図２～図４参照）及びボルト挿通孔１２ｃや不図示の冷却水用孔が形成されている。図１における参照符号４は、シリンダブロック２及びシリンダヘッド３にまたがって、各燃焼室Ｓを包囲するように連続して形成されたウォータージャケットであり、シリンダヘッドガスケット１の上下両側のウォータージャケット４は、前記複数の冷却水用孔を介して互いに連通している。 On the other hand, the intermediate plate 12 has a flat plate shape on which no bead is formed. Corresponding to the bead plate 11, the combustion chamber opening 12a (see FIGS. 2 to 4), the bolt insertion hole 12c, and a cooling water (not shown). A hole is formed. Reference numeral 4 in FIG. 1 is a water jacket continuously formed so as to surround each combustion chamber S across the cylinder block 2 and the cylinder head 3, and the water jacket 4 on both upper and lower sides of the cylinder head gasket 1. Are communicated with each other through the plurality of cooling water holes.
　ビード板１１におけるビード１１ｂは、図２に示す積層状態において中間板１２の上下面に、シリンダブロック２とシリンダヘッド３を互いに結合するボルトの締結力によって適宜圧縮変形を受けた状態で密接されるようになっている。 The beads 11b in the bead plate 11 are brought into close contact with the upper and lower surfaces of the intermediate plate 12 in a state of being appropriately compressed and deformed by the fastening force of the bolts that couple the cylinder block 2 and the cylinder head 3 together in the stacked state shown in FIG. It is like that.
　図３及び図４に示すように、中間板１２には、互いに隣接する燃焼室用開口１２ａ，１２ａの間におけるビード１１ｂ，１１ｂとの密接位置の間に沿って、燃焼室用開口１２ａ，１２ａ，・・・の列方向と直交する方向へ延びる長孔状のスリット１２ｂが形成され、各スリット１２ｂの両端には、それぞれ端部孔１２ｄが拡張形成されている。 As shown in FIGS. 3 and 4, the intermediate plate 12 includes combustion chamber openings 12 a and 12 a that are located between the adjacent combustion chamber openings 12 a and 12 a and in close contact with the beads 11 b and 11 b. Are elongated holes 12b extending in a direction orthogonal to the row direction, and end holes 12d are extended at both ends of each slit 12b.
　ビード板１１には、図１及び図３に示すように、中間板１２における各スリット１２ｂの両端の端部孔１２ｄと対応する位置に、それぞれ、この端部孔１２ｄと同径の円形の導水孔１１ｄが開設されると共に、各スリット１２ｂを上下から覆う通路壁部１１ｅを有する。また、前記導水孔１１ｄ，１１ｄは、シリンダブロック２の衝合面又はシリンダヘッド３の衝合面におけるウォータージャケット４の開口領域に位置している。 As shown in FIGS. 1 and 3, the bead plate 11 has circular water guides having the same diameter as the end holes 12d at positions corresponding to the end holes 12d at both ends of the slits 12b in the intermediate plate 12, respectively. The hole 11d is opened, and the passage wall 11e covers the slits 12b from above and below. Further, the water guide holes 11 d and 11 d are located in an opening region of the water jacket 4 on the abutting surface of the cylinder block 2 or the abutting surface of the cylinder head 3.
　すなわち導水孔１１ｄ，１１ｄは、スリット１２ｂの両端の端部孔１２ｄをそれぞれシリンダブロック２側又はシリンダヘッド３側のウォータージャケット４に連通させるものであって、このため、図２又は図３に示す積層状態において、互いに隣接する燃焼室用開口１２ａ，１２ａの間におけるビード１１ｂ，１１ｂの間には、スリット１２ｂと、その上下を覆う通路壁部１１ｅ，１１ｅと、スリット１２ｂの両端の端部孔１２ｄ及び導水孔１１ｄによって、両端がウォータージャケット４に連通した冷却水流路１０が形成されるようになっている。 That is, the water guide holes 11d and 11d communicate the end holes 12d at both ends of the slit 12b with the water jacket 4 on the cylinder block 2 side or the cylinder head 3 side, and are therefore shown in FIG. 2 or FIG. In the stacked state, between the beads 11b and 11b between the combustion chamber openings 12a and 12a adjacent to each other, there is a slit 12b, passage wall portions 11e and 11e covering the upper and lower sides, and end holes at both ends of the slit 12b. A cooling water flow path 10 having both ends communicating with the water jacket 4 is formed by 12d and the water guide hole 11d.
　なお、図５に示すように、スリット１２ｂの両端に位置する導水孔１１ｄは、その双方が、上下のビード板１１，１１のうちの一方に開設されたものであっても良いし、一方の導水孔１１ｄが上側のビード板１１に、他方の導水孔１１ｄが下側のビード板１１に開設されたものであっても良い。 In addition, as shown in FIG. 5, both the water guide holes 11d located at both ends of the slit 12b may be provided in one of the upper and lower bead plates 11, 11, or The water guide hole 11d may be provided in the upper bead plate 11, and the other water guide hole 11d may be provided in the lower bead plate 11.
　すなわち、図５（Ａ）に示す例では、スリット１２ｂの一端に位置する導水孔１１ｄが下側のビード板１１に開設されると共に他端に位置する導水孔１１ｄが上側のビード板１１に開設されており、図５（Ｂ）に示す例では、スリット１２ｂの両端に位置する導水孔１１ｄが双方とも下側のビード板１１に開設されており、図５（Ｃ）に示す例では、スリット１２ｂの両端に位置する導水孔１１ｄがそれぞれ上下双方のビード板１１に開設されており、図５（Ｄ）に示す例では、図５（Ｃ）と同様、スリット１２ｂの両端に位置する導水孔１１ｄがそれぞれ上下双方のビード板１１に開設されると共に、スリット１２ｂの一端では下側の導水孔１１ｄが端部孔１２ｄと同径、上側の導水孔１１ｄが端部孔１２ｄより小径であるのに対し、スリット１２ｂの他端では逆に上側の導水孔１１ｄが端部孔１２ｄと同径、下側の導水孔１１ｄが端部孔１２ｄより小径となっているものであり、図５（Ｅ）に示す例では、図５（Ｃ）と同様、スリット１２ｂの両端に位置する導水孔１１ｄがそれぞれ上下双方のビード板１１に開設されると共に、下側の導水孔１１ｄが双方とも端部孔１２ｄと同径、上側の導水孔１１ｄが双方とも端部孔１２ｄより小径となっているものである。なお、導水孔１１ｄの位置関係や大小関係は、ウォータージャケット４における冷却水の流れの方向に応じて適切に設定されるものであり、図示の例とは上下あるいは左右に対して逆であっても良い。 That is, in the example shown in FIG. 5A, the water guide hole 11d located at one end of the slit 12b is opened in the lower bead plate 11 and the water guide hole 11d located at the other end is opened in the upper bead plate 11. In the example shown in FIG. 5 (B), the water guide holes 11d located at both ends of the slit 12b are both opened in the lower bead plate 11, and in the example shown in FIG. The water guide holes 11d located at both ends of 12b are formed in both the upper and lower bead plates 11, and in the example shown in FIG. 5D, the water guide holes located at both ends of the slit 12b as in FIG. 5C. 11d is formed in both the upper and lower bead plates 11, and at one end of the slit 12b, the lower water guide hole 11d has the same diameter as the end hole 12d, and the upper water guide hole 11d has a smaller diameter than the end hole 12d. Against On the other hand, the upper water guide hole 11d has the same diameter as the end hole 12d and the lower water guide hole 11d has a smaller diameter than the end hole 12d at the other end of the lid 12b. In the example shown, as in FIG. 5C, the water guide holes 11d located at both ends of the slit 12b are respectively opened in the upper and lower bead plates 11, and the lower water guide holes 11d are both end holes 12d. Both the same diameter and upper water guide holes 11d are smaller than the end hole 12d. The positional relationship and size relationship of the water guide holes 11d are appropriately set according to the direction of the flow of the cooling water in the water jacket 4, and are opposite to the illustrated example with respect to the top and bottom or the left and right. Also good.
　上述の構成を備える本発明のシリンダヘッドガスケット１によれば、燃焼室用開口１２ａ，１２ａの間に、スリット１２ｂと、その上下を覆うビード板１１，１１の通路壁部１１ｅ，１１ｅと、スリット１２ｂの両端の端部孔１２ｄ及び導水孔１１ｄによって、両端がウォータージャケット４に連通した冷却水流路１０が形成されるため、シリンダブロック２における燃焼室Ｓ，Ｓ，・・・間に先に説明した図７のような溝２０１などを形成することなく、燃焼室Ｓ，Ｓ，・・・間にウォータージャケット４からの冷却水を流通させることができる。 According to the cylinder head gasket 1 of the present invention having the above-described configuration, the slit 12b between the combustion chamber openings 12a and 12a, the passage wall portions 11e and 11e of the bead plates 11 and 11 covering the upper and lower sides thereof, and the slit A cooling water flow path 10 having both ends communicating with the water jacket 4 is formed by the end holes 12d and the water guide holes 11d at both ends of 12b, so that the description will be given first between the combustion chambers S, S,. The cooling water from the water jacket 4 can be circulated between the combustion chambers S, S,... Without forming the groove 201 as shown in FIG.
　詳しくは、たとえば図５における右側のウォータージャケット４が上流側、左側のウォータージャケット４が下流側であると仮定すると、導水孔１１ｄの開設位置やその開口径によって、冷却水流路１０には、図中に矢印で示すように、上流側から下流側へ向かう冷却水の流れが惹起される。したがって、中間板１２及びその上下のビード板１１，１１は、冷却水流路１０に接する部分が冷却されることになる。 More specifically, for example, assuming that the right water jacket 4 in FIG. 5 is the upstream side and the left water jacket 4 is the downstream side, the cooling water flow path 10 includes As indicated by the arrows inside, a flow of cooling water from the upstream side to the downstream side is caused. Therefore, the intermediate plate 12 and the upper and lower bead plates 11, 11 are cooled at the portion in contact with the cooling water flow path 10.
　このため、燃焼室Ｓ，Ｓ，・・・間の部分でシリンダヘッドガスケット１の熱負荷が大きくなってビード１１ｂ，１１ｂにヘタリや損傷を生じてしまうのを有効に防止することができる。 For this reason, it is possible to effectively prevent the thermal load of the cylinder head gasket 1 from being increased between the combustion chambers S, S,... And causing the beads 11b and 11b to be set and damaged.
１　シリンダヘッドガスケット
１０　冷却水流路
１１　ビード板
１１ａ，１２ａ　燃焼室用開口
１１ｂ　ビード
１１ｄ　導水孔
１１ｅ　通路壁部
１２　中間板
１２ｂ　スリット
１２ｄ　端部孔
２　シリンダブロック
３　シリンダヘッド
４　ウォータージャケット
Ｓ　燃焼室 DESCRIPTION OF SYMBOLS 1 Cylinder head gasket 10 Cooling water flow path 11 Bead plate 11a, 12a Combustion chamber opening 11b Bead 11d Water guide hole 11e Channel wall 12 Intermediate plate 12b Slit 12d End hole 2 Cylinder block 3 Cylinder head 4 Water jacket S Combustion chamber

Claims (3)

  1. 　複数の燃焼室及びこれらの燃焼室を包囲するウォータージャケットを備えるシリンダブロックとシリンダヘッドの間に介装され、前記各燃焼室に対応する複数の燃焼室用開口の外周に沿って周設されたビードが形成された複数のビード板と、その間に挟み込まれる中間板とを積層してなるシリンダヘッドガスケットであって、前記中間板に、互いに隣接する燃焼室用開口の間で前記ビードとの密接位置の間に沿って延びる長孔状のスリットが形成され、前記ビード板に、前記スリットの上下を覆う通路壁部を有すると共に、前記スリットの両端をそれぞれ前記シリンダブロック側又は前記シリンダヘッド側のウォータージャケットに連通させる導水孔が開設されたことを特徴とするシリンダヘッドガスケット。 A plurality of combustion chambers and a cylinder block having a water jacket surrounding these combustion chambers are interposed between a cylinder head and a cylinder head, and are provided along the outer periphery of a plurality of combustion chamber openings corresponding to the combustion chambers. A cylinder head gasket formed by laminating a plurality of bead plates each having a bead and an intermediate plate sandwiched between the bead plates, wherein the intermediate plate is in close contact with the bead between adjacent combustion chamber openings. A slot-like slit extending along the position is formed, the bead plate has a passage wall portion covering the upper and lower sides of the slit, and both ends of the slit are respectively located on the cylinder block side or the cylinder head side. Cylinder head gasket, characterized in that a water introduction hole communicating with the water jacket is opened.
  2. 　スリットの両端に位置する導水孔のうちの一方の導水孔がウォータージャケットにおける相対的に上流側に位置し、他方の導水孔が相対的に下流側に位置することを特徴とする請求項１に記載のシリンダヘッドガスケット。 2. One of the water guide holes located at both ends of the slit is located on the relatively upstream side of the water jacket, and the other water guide hole is located on the relatively downstream side. Cylinder head gasket as described.
  3. 　スリットの両端に位置する導水孔のうちの一方の導水孔が中間板の上下のビード板のうち一方に開設され、他方の導水孔が中間板の上下のビード板のうち一方又は他方に開設されたことを特徴とする請求項１又は２に記載のシリンダヘッドガスケット。 One of the water guide holes located at both ends of the slit is opened in one of the upper and lower bead plates of the intermediate plate, and the other water guide hole is opened in one or the other of the upper and lower bead plates of the intermediate plate. The cylinder head gasket according to claim 1 or 2, wherein the cylinder head gasket is provided.
PCT/JP2013/079182 2012-11-09 2013-10-29 Cylinder head gasket WO2014073413A1 (en)

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DE102015215083A1 (en) * 2015-08-06 2017-02-09 Elringklinger Ag Cylinder head gasket
JP2018071730A (en) * 2016-11-02 2018-05-10 Nok株式会社 gasket

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CN107110358B (en) * 2014-12-19 2018-06-12 Nok株式会社 The sealing structure of babinet

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JPS63119850U (en) * 1987-01-29 1988-08-03
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JP2009156061A (en) * 2007-12-25 2009-07-16 Toyota Motor Corp Cylinder head gasket
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JPS603465A (en) * 1983-06-22 1985-01-09 Nippon Metal Gasket Kk Metallic gasket
JPS63119850U (en) * 1987-01-29 1988-08-03
JPH04114174U (en) * 1991-03-26 1992-10-07 日本ラインツ株式会社 metal cylinder head gasket
JPH10103522A (en) * 1996-09-30 1998-04-21 Ishikawa Gasket Kk Cylinder head gasket provided with fluid passage
US20100326380A1 (en) * 2009-06-26 2010-12-30 Ford Global Technologies, Llc Internal combustion engine with direct cooling of cylinder components

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215083A1 (en) * 2015-08-06 2017-02-09 Elringklinger Ag Cylinder head gasket
JP2018071730A (en) * 2016-11-02 2018-05-10 Nok株式会社 gasket

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