JPS6123634Y2 - - Google Patents
Info
- Publication number
- JPS6123634Y2 JPS6123634Y2 JP6038979U JP6038979U JPS6123634Y2 JP S6123634 Y2 JPS6123634 Y2 JP S6123634Y2 JP 6038979 U JP6038979 U JP 6038979U JP 6038979 U JP6038979 U JP 6038979U JP S6123634 Y2 JPS6123634 Y2 JP S6123634Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- waterway
- seat
- cylinder
- drilling
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 16
- 238000005553 drilling Methods 0.000 claims description 15
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関の冷却水路装置に係り、さら
に詳しくは、隣り合うシリンダ、例えば、奇数番
目のシリンダと偶数番目のシリンダ間に共通一枚
の境界壁、いわゆるサイヤミーズボア壁を設け、
この境界壁に冷却水路を孔設した内燃機関の冷却
水路装置に関する。[Detailed Description of the Invention] The present invention relates to a cooling channel device for an internal combustion engine, and more specifically, a common boundary wall between adjacent cylinders, for example, an odd-numbered cylinder and an even-numbered cylinder, a so-called siyamise. Install a bore wall,
The present invention relates to a cooling waterway device for an internal combustion engine in which a cooling waterway is provided in the boundary wall.
従来のこの種の装置としては、例えば、実公昭
52−52113号公報記載のように、シリンダブロツ
クの頂面からサイヤミーズボア壁を斜め方向に貫
通する冷却水路を設けたものが知られている。し
かし、このような構造を採用すると、シリンダブ
ロツクの頂面に対向するシリンダヘツド下面にも
水路を設けねばならず、加工工程が余分に必要と
なるばかりか、シリンダブロツクと、シリンダヘ
ツド間のガスケツトにも、連通水路を設けるた
め、シール不良を来たす欠点があつた。 As a conventional device of this type, for example,
As described in Japanese Patent No. 52-52113, it is known that a cooling water channel is provided that diagonally penetrates the Siyamise bore wall from the top surface of the cylinder block. However, if such a structure is adopted, it is necessary to provide a water channel on the bottom surface of the cylinder head opposite to the top surface of the cylinder block, which not only requires an extra machining process, but also requires a gasket between the cylinder block and the cylinder head. However, because of the provision of a communicating waterway, there was a drawback of poor sealing.
また、実公昭52−54682号公報記載の考案のよ
うに、サイヤミーズボア壁に交叉状のドリル孔を
設けたものは、交叉部でドリル刃が変形し易く、
ドリル刃の折損や、孔精度の悪化等を来たす欠点
があつた。このような欠点を解消し、ドリル加工
を可能とするためには、シリンダブロツク外壁を
一部分取り除いたりする必要があるという不都合
が生じた。 In addition, in the device described in Japanese Utility Model Publication No. 52-54682, in which cross-shaped drill holes are provided in the Siyamise bore wall, the drill blade is easily deformed at the cross section.
There were drawbacks such as breakage of the drill bit and deterioration of hole accuracy. In order to overcome these drawbacks and enable drilling, it was necessary to partially remove the outer wall of the cylinder block.
本考案は以上のような不都合を改善するために
なされたもので、シリンダ列に対し、境界壁両側
の冷却水路に鋳物砂除去等により形成される一対
のドリル加工用座部を設け、この一方の座部から
他方の座部へサイヤミーズボア壁を斜め方向に貫
通するドリル加工の水路を設けることにより、加
工水路への冷却水量の増大がはかれると共に、シ
ール性が良く、ドリル加工が容易で、孔精度が優
れたシリンダブロツクの冷却水路装置を得ること
を目的とする。 The present invention was made to improve the above-mentioned disadvantages, and a pair of drilling seats formed by removing molding sand etc. are provided in the cooling channels on both sides of the boundary wall for the cylinder row, and one of the seats is formed by removing molding sand, etc. By providing a drilled waterway that diagonally penetrates the Saiyamise bore wall from one seat to the other, the amount of cooling water flowing into the processing waterway is increased, and the sealing performance is good and drilling is easy. The object of the present invention is to obtain a cylinder block cooling waterway device with excellent hole accuracy.
以下、図面に示す実施例と共に本考案の詳細を
説明する。 Hereinafter, details of the present invention will be explained along with embodiments shown in the drawings.
第1図〜第4図は本考案の一実施例を説明する
もので、図において符号1で示すものは内燃機関
で、シリンダヘツド2と、シリンダブロツク3と
から構成され、両者はガスケツト4を介してヘツ
ドボルト4aによつて強固に螺着固定される。 1 to 4 illustrate an embodiment of the present invention. In the figures, the reference numeral 1 indicates an internal combustion engine, which is composed of a cylinder head 2 and a cylinder block 3, both of which have a gasket 4. It is firmly screwed and fixed by a head bolt 4a via the head bolt 4a.
符号5で示すものはシリンダボアで、ボア間は
共通1枚のサイヤミーズボア壁6によつて隔てら
れている。符号7,8で示すものは冷却水路で、
この冷却水路7,8はシリンダブロツク内の水路
7a,8aと、これに連通するシリンダヘツド2
側の水路7b,8bとからなり、両者間は三角形
状の水路7c,8cを介して連続している。そし
て、シリンダブロツク3内の水路7a,8aはウ
オータポンプ9の吐出側と連通し、冷却水は第1
図に矢印10で示すように水路7c,8cを通つ
てシリンダヘツド2側の水路7b,8bを通り、
サーモスタツト11、水路12、ラジエータ13
を介してウオータポンプ9の吸入側水路14に循
還させる。符号15は水路7a,8a内の水流方
向を示す矢印である。 Reference numeral 5 indicates cylinder bores, and the bores are separated by a common Siyamese bore wall 6. Those indicated by symbols 7 and 8 are cooling waterways,
These cooling waterways 7 and 8 are connected to waterways 7a and 8a in the cylinder block, and the cylinder head 2 which communicates with the waterways 7a and 8a.
It consists of side waterways 7b and 8b, and the two are continuous via triangular waterways 7c and 8c. The water channels 7a and 8a in the cylinder block 3 communicate with the discharge side of the water pump 9, and the cooling water flows through the first
As shown by the arrow 10 in the figure, it passes through water channels 7c and 8c, and then passes through water channels 7b and 8b on the cylinder head 2 side,
Thermostat 11, water channel 12, radiator 13
The water is circulated to the suction side water channel 14 of the water pump 9 through the water pump 9. Reference numeral 15 is an arrow indicating the direction of water flow within the water channels 7a, 8a.
一方、符号16,19で示すものはシリンダボ
ア5の周面に沿つて、シリンダ列と平行に形成さ
れた水路7a,8aに形成した凸状のドリル加工
用座部、即ち一方の水路8a側の水路8c及び他
方の水路7a側の水路7c上流に臨んで、サイヤ
ミーズボア壁6の両端部分に形成された平面部を
有するドリル加工用座部で、中子としての鋳砂を
除去することにより凸状に形成される。 On the other hand, those indicated by reference numerals 16 and 19 are convex drilling seats formed in water channels 7a and 8a formed parallel to the cylinder row along the circumferential surface of the cylinder bore 5, that is, on the one water channel 8a side. By removing the casting sand as a core with a seat for drilling having a flat part formed at both end portions of the Saiyamise bore wall 6 facing upstream of the waterway 8c and the waterway 7c on the other waterway 7a side. Formed in a convex shape.
この結果、ドリルの軸線はこのドリル加工用座
部16に直角に対向することができるため、ドリ
ルの位置決めが容易で、精度が向上すると共に、
ドリルの変形、折損を防止することができると共
に、シリンダブロツク3の頂面3aより上流の水
路のように複雑な形状の水路にも容易に形成で
き、生産性がよい。 As a result, the axis of the drill can face the drilling seat 16 at right angles, making it easy to position the drill and improving accuracy.
It is possible to prevent deformation and breakage of the drill, and it is also possible to easily form a complex-shaped waterway, such as the waterway upstream from the top surface 3a of the cylinder block 3, resulting in good productivity.
このドリル加工用座部16からサイヤミーズボ
ア壁6を貫通して形成されるドリル孔17は直径
約2〜5mmの細孔で、シリンダブロツク3の頂面
(水平面)3aに対して傾斜角約θ=20゜〜38゜
傾斜している。 The drill hole 17 formed from this drilling seat 16 through the Saiyamise bore wall 6 is a fine hole with a diameter of approximately 2 to 5 mm, and has an inclination angle of approximately approximately 2 to 5 mm with respect to the top surface (horizontal surface) 3a of the cylinder block 3. It is inclined at θ=20° to 38°.
そのため、ウオータポンプ9により吐出された
冷却水は水路7a,8aを介して各々シリンダボ
ア5の周縁に沿つて平行にシリンダヘツド2側へ
流れるが、この水路7a,8aは傾斜角θをもつ
たドリル孔17を介して連通し、境界壁であるサ
イヤミーズボア壁6がボア5の下方のドリル加工
用座部19からドリル加工用座部16に流れる冷
却水により冷却される。 Therefore, the cooling water discharged by the water pump 9 flows parallel to the cylinder head 2 side along the periphery of the cylinder bore 5 via the water channels 7a and 8a. The Siyamese bore wall 6, which is a boundary wall, is communicated through the hole 17 and is cooled by cooling water flowing from the drilling seat 19 below the bore 5 to the drilling seat 16.
この時、ドリル孔17の水路7a側への開口部
にも、凸状の座部19を設けたので、冷却水の流
れに対して対向する方向に開口することになり、
冷却水がドリル孔17へ流れ込み易くなり、冷却
水量が増大でき冷却効果が一層向上する。 At this time, since a convex seat 19 was also provided at the opening of the drill hole 17 toward the water channel 7a, the opening was opened in the direction opposite to the flow of cooling water.
The cooling water can easily flow into the drill hole 17, the amount of cooling water can be increased, and the cooling effect can be further improved.
この結果、ピストン18のストロークにおい
て、上死点位置からクランク角度で90度変位した
間のサイヤミーズボア壁6の温度を最高でも160
℃以下に冷却でき、ピストンの焼損や、摩耗、潤
滑油の消費等を改善することができる。 As a result, during the stroke of the piston 18, the temperature of the Saiyammies bore wall 6 during the crank angle displacement of 90 degrees from the top dead center position is at most 160 degrees.
It can be cooled to below ℃, which can reduce piston burnout, wear, lubricant consumption, etc.
本実施例は以上のように構成されているため、
ドリル孔17はシリンダブロツク3の頂面ではな
く、シリンダヘツドと連通する三角形状の通路8
cに臨んで形成してあるため、ガスケツト4に新
らたな連通孔を開設する必要がなく、シール性を
向上させると共に、加工が容易で、傾斜角θを小
さくすることができる。 Since this embodiment is configured as described above,
The drill hole 17 is not formed in the top surface of the cylinder block 3, but in a triangular passage 8 communicating with the cylinder head.
Since it is formed facing the gasket 4, there is no need to open a new communication hole in the gasket 4, and the sealing performance is improved, machining is easy, and the inclination angle θ can be reduced.
第5図は本考案はの他の実施例を説明するもの
で、図中、第1図〜第4図と同一部分には同一符
号を示し、その説明は省略する。 FIG. 5 illustrates another embodiment of the present invention. In the figure, the same parts as in FIGS. 1 to 4 are denoted by the same reference numerals, and the explanation thereof will be omitted.
本実施例にあつてはドリル加工用座部16を複
数個(2個)設け、それぞれ異なる傾斜角θ1,
θ2のドリル孔17a,17bを形成したため、
ピストンの全ストロークに亘り、サイヤミーズボ
ア壁6の温度を更に低下できる。 In this embodiment, a plurality of (two) drilling seats 16 are provided, each having a different inclination angle θ 1 ,
Since the drill holes 17a and 17b of θ 2 were formed,
The temperature of the siyamise bore wall 6 can be further reduced over the entire stroke of the piston.
なお、本考案者の実験によれば、傾斜角θ1≒
20゜〜38゜,θ1<θ2<55゜にすると、冷却効
果が更に大きくなることがわかつた。 Furthermore, according to the inventor's experiments, the inclination angle θ 1 ≒
It was found that the cooling effect becomes even greater when the angle is 20° to 38° and θ 1 <θ 2 <55°.
以上の各実施例の如く構成することにより、シ
リンダボア間を画する共通1枚のサイヤミーズボ
ア壁6の肉厚は約4〜8mmに縮小でき、シリンダ
列の長さ寸法を短かくすることにより、シリンダ
ブロツク、シリンダヘツド、クランク軸、吸,排
気マニホルド等を短かくすることができ、機関全
体の重量を大幅に軽減し、車輌走行燃費の著しい
改善をすることができる。なお、ドリル加工用座
部16の端面は比較的大きな三角形状通路8cを
介してエンドミル加工をすることによりドリル孔
を精度よく加工することができる。 By configuring as in each of the above embodiments, the wall thickness of the common Siyamise bore wall 6 that separates the cylinder bores can be reduced to about 4 to 8 mm, and by shortening the length of the cylinder row, , the cylinder block, cylinder head, crankshaft, intake and exhaust manifolds, etc. can be shortened, the weight of the entire engine can be significantly reduced, and the fuel efficiency of the vehicle can be significantly improved. Note that by end milling the end face of the drilling seat 16 through the relatively large triangular passage 8c, a drill hole can be formed with high precision.
以上の説明から明らかなように、本考案によれ
ば、シリンダ列のボアに沿つて平行に形成された
冷却水路の両方に、鋳砂除去などにより形成され
たドリル加工用座部を設け、この一方の座部から
他方の座部へ、サイヤミーズボア壁を斜めに貫通
するドリル加工の水路を設けると共に、他方の座
部を冷却水の流れに対し対向させた構成にしたた
め、ドリル加工水路への冷却水量を増大し冷却効
果が一層向上できると共に、シリンダブロツク頂
面上流の複雑な形状の水路に容易に冷却水路を形
成でき、生産性を高めることができる。 As is clear from the above description, according to the present invention, drilling seats formed by removing casting sand are provided in both of the cooling channels formed in parallel along the bores of the cylinder row. A drilled waterway is provided from one seat to the other seat, diagonally penetrating the Saiyamise bore wall, and the other seat is configured to face the flow of cooling water, allowing the drilled waterway to flow through the bore wall diagonally. The cooling effect can be further improved by increasing the amount of cooling water in the cylinder block, and the cooling water channel can be easily formed in a complex-shaped water channel upstream of the top surface of the cylinder block, thereby increasing productivity.
第1図〜第4図は本考案の一実施例を説明する
もので、第1図は内燃機関の縦断側面図、第2図
はシリンダの要部拡大断面図、第3図はシリンダ
ブロツクの平面図、第4図は第2図のA−A線断
面図、第5図は本考案の他の実施例の要部拡大断
面図である。
1……内燃機関、2……シリンダヘツド、3…
…シリンダブロツク、4……ガスケツト、5……
シリンダボア、6……サイヤミーズボア壁、7,
8……冷却水路、9……ウオータポンプ、11…
…サーモスタツト、12……水路、13……ラジ
エータ、16,19……ドリル加工用座部、17
……ドリル孔。
Figures 1 to 4 are for explaining one embodiment of the present invention. Figure 1 is a vertical sectional side view of an internal combustion engine, Figure 2 is an enlarged sectional view of the main part of a cylinder, and Figure 3 is a cylinder block. A plan view, FIG. 4 is a sectional view taken along the line A--A in FIG. 2, and FIG. 5 is an enlarged sectional view of a main part of another embodiment of the present invention. 1...Internal combustion engine, 2...Cylinder head, 3...
...Cylinder block, 4...Gasket, 5...
Cylinder bore, 6...Siyamise bore wall, 7,
8...Cooling channel, 9...Water pump, 11...
... Thermostat, 12 ... Water channel, 13 ... Radiator, 16, 19 ... Drilling seat, 17
...Drill hole.
Claims (1)
けたドリル加工の冷却水路と、シリンダボアの周
縁に形成された冷却水路を有する内燃機関の冷却
水路装置において、シリンダ列に対し前記境界壁
両側の冷却水路に凸状に形成され、かつ、開口部
附近に平面部を有する一対のドリル加工用座部を
設け、この一方の座部から他方の座部へ前記境界
壁を斜め方向に貫通するドリル加工の水路を設け
ると共に、前記他方の座部を冷却水の流れに対し
対向させたことを特徴とする内燃機関の冷却水路
装置。 In a cooling waterway device for an internal combustion engine, which has a boundary wall between adjacent cylinders, a drilled cooling waterway provided in the boundary wall, and a cooling waterway formed around the periphery of the cylinder bore, cooling on both sides of the boundary wall with respect to the cylinder row is provided. A pair of drilling seats formed in a convex shape in the waterway and having a flat part near the opening is provided, and drilling is performed to penetrate the boundary wall in an oblique direction from one seat to the other seat. 1. A cooling water channel device for an internal combustion engine, characterized in that a water channel is provided, and the other seat is opposed to a flow of cooling water.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6038979U JPS6123634Y2 (en) | 1979-05-07 | 1979-05-07 | |
US06/147,336 US4369739A (en) | 1979-05-07 | 1980-05-06 | Structure of a cylinder assembly for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6038979U JPS6123634Y2 (en) | 1979-05-07 | 1979-05-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55161038U JPS55161038U (en) | 1980-11-19 |
JPS6123634Y2 true JPS6123634Y2 (en) | 1986-07-15 |
Family
ID=29294360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6038979U Expired JPS6123634Y2 (en) | 1979-05-07 | 1979-05-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6123634Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2703630A1 (en) * | 2012-08-31 | 2014-03-05 | Wärtsilä Schweiz AG | Cylinder liner for a stroke piston combustion engine |
-
1979
- 1979-05-07 JP JP6038979U patent/JPS6123634Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS55161038U (en) | 1980-11-19 |
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