JPS6359020B2 - - Google Patents
Info
- Publication number
- JPS6359020B2 JPS6359020B2 JP1949482A JP1949482A JPS6359020B2 JP S6359020 B2 JPS6359020 B2 JP S6359020B2 JP 1949482 A JP1949482 A JP 1949482A JP 1949482 A JP1949482 A JP 1949482A JP S6359020 B2 JPS6359020 B2 JP S6359020B2
- Authority
- JP
- Japan
- Prior art keywords
- protrusion
- cylinder liner
- protrusions
- width
- height
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- 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
- F02F1/04—Cylinders; Cylinder heads having cooling means for air cooling
- F02F1/06—Shape or arrangement of cooling fins; Finned cylinders
- F02F1/08—Shape or arrangement of cooling fins; Finned cylinders running-liner and cooling-part of cylinder being different parts or of different material
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)
Description
【発明の詳細な説明】
この発明は内燃機関用のアルミニウム合金製ク
ランクケース内に鋳ぐるむ所のシリンダライナに
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder liner that is cast into an aluminum alloy crankcase for an internal combustion engine.
従来アルミウム合金製クランクケース内にシリ
ンダライナを鋳ぐるむ際、ジヤケツト中子及び他
部分から発生するガスによりシリンダライナ外周
部にガス欠陥が発生し、シリンダライナとアルミ
ニウム合金製クランクケースとの密着性を悪くす
る。更に内燃機関運転時には発生熱によりシリン
ダライナの合金鋳鉄とクランケースのアルミニウ
ム合金材との熱膨脹差及び震動によりシリンダラ
イナとケランクケースとの密着性が劣化し、、オ
イル上がりを起したり、異状磨耗の原因となつた
りした。そのため今までのシリンダライナの最少
肉厚はライナの熱歪および密着強度上からも最小
1.8mmであつた。 Conventionally, when a cylinder liner is cast into an aluminum alloy crankcase, gas generated from the jacket core and other parts causes gas defects on the outer circumference of the cylinder liner, resulting in poor adhesion between the cylinder liner and the aluminum alloy crankcase. make things worse. Furthermore, when an internal combustion engine is operated, the heat generated causes a difference in thermal expansion between the cast iron alloy of the cylinder liner and the aluminum alloy material of the crank case, and vibrations deteriorate the adhesion between the cylinder liner and the Keranc case, causing oil to bleed and other abnormalities. This may cause wear and tear. Therefore, the minimum wall thickness of cylinder liners up to now is the minimum from the viewpoint of thermal distortion and adhesion strength of the liner.
It was 1.8mm.
本発明は以上のような鋳ぐるみに伴なつて発生
する欠陥防止やさらに強密着性で薄肉化した鋳ぐ
るみ用シリンダライナを提供することを目的とし
たものである。 The object of the present invention is to prevent the above-mentioned defects that occur as a result of casting, and to provide a cylinder liner for casting that has strong adhesion and is thinned.
本発明はシリンダライナの外周に鉛直方向に連
続する帯状の上の突部を多数設け、上の突部の鉛
直方向下部に下の突部を連続して設け、下の突部
を上の突部より幅、高さを小となし、上下突部の
それぞれの間の溝を設け、突部と溝のそれぞれの
寸法幅を１mm〜10mmとなし、突部の高さを0.2〜
５mmとなす内燃機関用鋳ぐるみシリンダライナに
係るものである。 The present invention provides a number of vertically continuous belt-shaped upper protrusions on the outer periphery of the cylinder liner, a lower protrusion continuous to the vertically lower part of the upper protrusions, and the lower protrusions are connected to the upper protrusions. The width and height are smaller than that of the upper and lower protrusions, and a groove is provided between each of the upper and lower protrusions, and the width of each protrusion and groove is 1 mm to 10 mm, and the height of the protrusion is 0.2 to 10 mm.
This relates to a 5mm cast cylinder liner for internal combustion engines.
本発明を添付図面の実施例により説明する。 The invention will be explained by way of examples in the accompanying drawings.
合金鋳鉄製シリンダライナ１の外周に鉛直方向
に連続する帯状の突部２を多数設ける。突部２の
間には溝４を設け、溝４の幅は等間隔にする要が
なく不同であつてもよい。上部の突部２の幅を
W1、高さをH1とする。 A large number of belt-shaped protrusions 2 that are continuous in the vertical direction are provided on the outer periphery of a cylinder liner 1 made of alloyed cast iron. Grooves 4 are provided between the protrusions 2, and the widths of the grooves 4 do not need to be equally spaced and may be unequal. The width of the upper protrusion 2
Let W 1 be the height, and H 1 be the height.
また突部２の幅方向の側面３はライナ１の中心
５よりの放射線と一致せしめ、さらに突部２は鉛
直方向の途中より狭い幅W2、低い高さH2の突部
２′に形成する。 In addition, the side surface 3 in the width direction of the protrusion 2 is made to coincide with the radiation from the center 5 of the liner 1, and the protrusion 2 is formed into a protrusion 2' having a narrower width W 2 and a lower height H 2 than the middle part in the vertical direction. do.
然して突部の寸法は
10mm≧W1＞W2≧１mm
５mm≧H1＞H2≧0.2mmとし、
又溝の幅は１mm〜10mmとなし、シリンダライナ
の肉厚は0.8mmとなす。 Therefore, the dimensions of the protrusion are 10 mm≧W 1 >W 2 ≧1 mm, 5 mm≧H 1 >H 2 ≧0.2 mm, the width of the groove is 1 mm to 10 mm, and the thickness of the cylinder liner is 0.8 mm.
本発明のシリンダライナ１は第５図に示すよう
にアルミ合金製クランクケース６内に鋳ぐるもの
であり、帯状の突起２とクランクケース６との間
の密着性が良くなる。 The cylinder liner 1 of the present invention is cast into an aluminum alloy crankcase 6 as shown in FIG. 5, and the adhesion between the belt-shaped projections 2 and the crankcase 6 is improved.
突部２および溝４の幅が１mm未満の場合はシリ
ンダライナ製作上多くの工数がかかると同時にシ
リンダライナ自体の鋳造時の砂落ちなどの不良多
くがなり、生産面でマイナスとなる。突部の巾が
10mmを超える場合は突部のアンダカツト部が少な
くなり密着性が劣化する。 If the width of the protrusion 2 and the groove 4 is less than 1 mm, many man-hours are required to manufacture the cylinder liner, and at the same time, there are many defects such as sand falling during casting of the cylinder liner itself, which is a disadvantage in terms of production. The width of the protrusion
If it exceeds 10 mm, the undercut portion of the protrusion will decrease and the adhesion will deteriorate.
突部２の高さにおいても0.2mm未満の場合は外
周溝よりのガス逃げが悪くなり、密着性が劣化す
る。逆に５mmを超える場合にはガス逃げが良くな
り密着性も向上するが、シリンダブロツク自体が
大きくなる欠点がある。 If the height of the protrusion 2 is less than 0.2 mm, gas escape from the outer circumferential groove will be poor, resulting in poor adhesion. On the other hand, if it exceeds 5 mm, gas escape is improved and adhesion is improved, but there is a drawback that the cylinder block itself becomes larger.
又本発明は上記の構成で第５図に示す状態でラ
イナ１をクランクケースに鋳ぐるむことにより発
生したガスは溝４を通り、上方に抜け、鋳型外に
逃げるため、アルミ合金製クランクケース６とシ
リンダライナ１との間にはガスによる欠陥がなく
なり、密着性を確保することができる。 Furthermore, in the present invention, the gas generated by casting the liner 1 into the crankcase in the state shown in FIG. There are no defects caused by gas between the cylinder liner 6 and the cylinder liner 1, and adhesion can be ensured.
又突部２を鉛直方向の途中において形状を変化
してあるので、ライナ１自体の製作において型よ
り容易に抜くことができると共に、ライナの内径
面および外径面の加工が必要とされた場合、掴み
加工治具のズレ止めの効果がある。 In addition, since the shape of the protrusion 2 is changed in the vertical direction, it can be easily removed from the mold when manufacturing the liner 1 itself, and when machining of the inner and outer diameter surfaces of the liner is required. This has the effect of preventing the gripping jig from slipping.
第１図は本発明の斜視図、第２図は縦断正面
図、第３図は平面図、第４図は突部の拡大平面
図、第５図は本発明をクランクケースに鋳ぐるむ
状態を示す正面断面図を示す。
１……シリンダライナ、２，２′……突部、３
……突部の側面、４……溝、６……クランクケー
ス。
Fig. 1 is a perspective view of the present invention, Fig. 2 is a vertical front view, Fig. 3 is a plan view, Fig. 4 is an enlarged plan view of the protrusion, and Fig. 5 is a state in which the present invention is molded into a crankcase. A front sectional view showing the. 1...Cylinder liner, 2, 2'...Protrusion, 3
...Side surface of protrusion, 4...Groove, 6...Crankcase.
Claims (1)
る帯状の上の突部２を多数設け、上の突部２の鉛
直方向下部に下の突部２′を連続して設け、下の
突部２′を上の突部２より幅、高さを小となし、
上、下の突部２，２′のそれぞれの間に溝４を設
け、突部と溝のそれぞれの寸法幅を１mm〜10mmと
なし、突部の高さを0.2mm〜５mmとなす内燃機関
用鋳ぐるみシリンダライナ。1. A large number of vertically continuous belt-shaped upper protrusions 2 are provided on the outer periphery of the cylinder liner 1, and lower protrusions 2' are continuously provided below the upper protrusions 2 in the vertical direction. ' is smaller in width and height than the upper protrusion 2,
An internal combustion engine in which a groove 4 is provided between each of the upper and lower protrusions 2 and 2', the width of each protrusion and groove is 1 mm to 10 mm, and the height of the protrusion is 0.2 mm to 5 mm. Cast cylinder liner for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1949482A JPS58138245A (en) | 1982-02-09 | 1982-02-09 | Cast cylinder liner for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1949482A JPS58138245A (en) | 1982-02-09 | 1982-02-09 | Cast cylinder liner for internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58138245A JPS58138245A (en) | 1983-08-17 |
| JPS6359020B2 true JPS6359020B2 (en) | 1988-11-17 |
Family
ID=12000916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1949482A Granted JPS58138245A (en) | 1982-02-09 | 1982-02-09 | Cast cylinder liner for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58138245A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913649U (en) * | 1982-07-15 | 1984-01-27 | トヨタ自動車株式会社 | Cylinder block structure |
| US5979374A (en) * | 1998-06-12 | 1999-11-09 | Cummins Engine Company, Inc. | Control cooled cylinder liner |
-
1982
- 1982-02-09 JP JP1949482A patent/JPS58138245A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58138245A (en) | 1983-08-17 |
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