JPH02301648A - Piston cooling mechanism for internal combustion engine - Google Patents
Piston cooling mechanism for internal combustion engineInfo
- Publication number
- JPH02301648A JPH02301648A JP12133889A JP12133889A JPH02301648A JP H02301648 A JPH02301648 A JP H02301648A JP 12133889 A JP12133889 A JP 12133889A JP 12133889 A JP12133889 A JP 12133889A JP H02301648 A JPH02301648 A JP H02301648A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- piston
- supply port
- oil passage
- opening
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 230000000694 effects Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 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
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、シリンダボア下端部に取っ付けられたオイル
ジェットから噴出されるオイルをピストン頭部に形成さ
れたリング状の油路に導くことによって、と不トン頭部
を冷却するようにした内燃機関用ピストンの冷却機構に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is capable of directing oil ejected from an oil jet attached to the lower end of a cylinder bore to a ring-shaped oil passage formed in a piston head. , relates to a cooling mechanism for a piston for an internal combustion engine that cools a piston head.
（従来の技術）
この種の冷却機構は、例えば熱負荷の高いターボチャー
ジャ付のエンジンに採用されるか、その具体的な構成を
第１１図に示す。即ち、第１１図は従来の冷却機構を示
す断面図であり、図示のようにピストン１０３の頭部に
はリンク状の油路１０６か形成されており、該油路１０
６からはオイル供給口１０７とオイル排出口１０８か下
方に向かって開口している。(Prior Art) This type of cooling mechanism is employed, for example, in a turbocharged engine with a high thermal load, and its specific configuration is shown in FIG. 11. That is, FIG. 11 is a sectional view showing a conventional cooling mechanism, and as shown in the figure, a link-shaped oil passage 106 is formed in the head of the piston 103.
6, an oil supply port 107 and an oil discharge port 108 are opened downward.
而して、不図示のオイルポンプに連通ずるオイルジェッ
ト１１２から前記オイル供給口１０７に向かってオイル
を噴出すれば、このオイルはオイル供給口１０７から前
記油路１０６に導入され、該油路１０６を流れてピスト
ン１０３の頭部を冷却した後、前記オイル排出口１０８
から排出されて落下する。When oil is jetted toward the oil supply port 107 from the oil jet 112 communicating with an oil pump (not shown), this oil is introduced from the oil supply port 107 into the oil passage 106 . After cooling the head of the piston 103, the oil discharge port 108
It is ejected from and falls.
（発明か解決しようとする課題）
しかしながら、上記従来の冷却機構にあっては、オイル
供給口１０７とオイル排出口１０８の油路１０６への開
口部１０７ａ、１０８ａかピストン１０３に対して共に
同一高さ位置にあったため、オイル供給口１０７から油
路１０６へ供給されたオイルの一部かオイル供給口１０
７側へ逆流し、オイル排出口１０８側へ流れてピストン
１０３の頭部の冷却に供されるオイルの量か不足し、ピ
ストン１０３の頭部の冷却効率か悪いという問題かあっ
た。(Problem to be Solved by the Invention) However, in the conventional cooling mechanism described above, the openings 107a and 108a of the oil supply port 107 and the oil discharge port 108 to the oil passage 106 are both at the same height with respect to the piston 103. Because the oil supply port 107 was located in the
There was a problem that the amount of oil flowing back to the 7 side and flowing to the oil discharge port 108 side to cool the head of the piston 103 was insufficient, resulting in poor cooling efficiency for the head of the piston 103.
本発明は上記問題に鑑みてなされたもので、その目的と
する処は、ピストン頭部に形成された油路に供給された
オイルをオイル排出口側へ効率良く流すことによって、
ピストンの冷却効率を高めることかてきる内燃機関用ピ
ストンの冷却機構を提供するにある。The present invention has been made in view of the above problems, and its purpose is to efficiently flow the oil supplied to the oil passage formed in the piston head toward the oil discharge port.
An object of the present invention is to provide a piston cooling mechanism for an internal combustion engine that can improve piston cooling efficiency.
（課題を解決するための手段）
上記目的を達成すべく本発明は、ピストン頭部にリング
状の油路を形成し、核油路からはオイル供給口とオイル
排出口を下方に向かって開口せしめ、シリンダボア下端
部に取り付けられたオイルジェットから前記オイル供給
口に向かってオイルを噴出せしめるようにした内燃機関
用ピストンの冷却ａ構において、前記オイル供給口の前
記油路への開口部を前記オイル排出口の同油路への開口
部よりも上方へ位置せしめたことをその＃徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention forms a ring-shaped oil passage in the piston head, and from the core oil passage, an oil supply port and an oil discharge port are opened downward. In a cooling structure for a piston for an internal combustion engine in which oil is jetted toward the oil supply port from an oil jet attached to a lower end of a cylinder bore, an opening of the oil supply port to the oil passage is connected to the The # sign is that the oil outlet is located above the opening to the oil passage.
（作用）
本発明によれば、ピストンにおいて、オイル供給口の油
路への開口部の方か万イル排出口の同油路へのｒＭ４０
部よりも高い位置にあるため、オイル供給口から油路に
供給されたオイルのオイル供給口側への逆流か防がれ、
油路に供給されたオイルは該油路をオイル排出口側へ向
かってスムーズに効率良く流れ、ピストンの頭部はこの
オイルによって効果的に冷却されてその冷却効率か高め
られる。(Function) According to the present invention, in the piston, the rM40
Because it is located higher than the oil supply port, the oil supplied from the oil supply port to the oil passage is prevented from flowing back to the oil supply port side.
The oil supplied to the oil passage flows smoothly and efficiently through the oil passage toward the oil discharge port, and the head of the piston is effectively cooled by this oil, thereby increasing its cooling efficiency.
（実施例） 以下に本発明の実施例を添付図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the accompanying drawings.
第１図は本発明に係る冷却機構を備える内燃機関用ピス
トンの縦断面図であり、同図に示すようにエンジンのシ
リンダボディ１に形成されたシリンダボア２内にはピス
トン３か上下摺動自在に嵌装されている。そして、ピス
トン３にはコンロット４の小端部かピストンピン５を介
して連結されており、コンロット４の大端部はピストン
３の下方に回転自在に配される不図示のクランク軸に連
結されている。尚、木実施例に係るエンジンはターボチ
ャージャ（図示せず）を備えている。FIG. 1 is a longitudinal cross-sectional view of a piston for an internal combustion engine equipped with a cooling mechanism according to the present invention. As shown in the figure, a piston 3 is installed in a cylinder bore 2 formed in a cylinder body 1 of the engine so that it can freely slide up and down. is fitted in. A small end of a connecting rod 4 is connected to the piston 3 via a piston pin 5, and a large end of the connecting rod 4 is connected to a crankshaft (not shown) rotatably disposed below the piston 3. ing. Incidentally, the engine according to the embodiment includes a turbocharger (not shown).
ところで、ピストン３の頭部には、リング状の油路６か
該ピストン３の軸直角平面に対して図示の角度αだけ傾
斜して形成されており、該油路６の高さの高い側（第１
図中、右方）からはオイル供給ロアが下方に向かって開
口しており、同油路６の高さの低い側（第１図中、左方
）からはオイル排出ロアか同じく下方に向かって開口し
ている。従って、図示のようにピストン３の頭部を上に
したとき、オイル供給ロアの油路６への開口部７ａはオ
イル排出口８の同油路６への開口部８ａよりも高い位置
にあることとなる。Incidentally, a ring-shaped oil passage 6 is formed in the head of the piston 3 and is inclined at an angle α shown in the figure with respect to a plane perpendicular to the axis of the piston 3, and the higher side of the oil passage 6 (1st
From the lower side of the oil passage 6 (left side in Figure 1), the oil supply lower opens downward. It is open. Therefore, when the head of the piston 3 is placed upward as shown in the figure, the opening 7a of the oil supply lower to the oil passage 6 is located at a higher position than the opening 8a of the oil discharge port 8 to the same oil passage 6. It happens.
一方、前記シリンタボディ１には油路ｌＯか第１図の紙
面垂直方向に形成されており、該油路１０には逆止弁１
１を介してオイルジェット１２か接続されている。この
オイルシェツト１２の先部はピストン３の下方において
該ピストン３に開口する前記オイル供給ロアに向かって
開口している。尚、油路ｌＯは不図示のオイルポンプの
吐出側に接続されている。又、前記逆止弁１１は、油路
１０内の圧力か所定値以上のとき、即ちピストン３の熱
負荷が大きいエンジン高回転時に開いて油路１０内のオ
イルをオイルジェット１２側へ流すものてあつ、エンジ
ン低回転時には閉じていてオイル圧力の低下を防いでい
る。On the other hand, an oil passage 1O is formed in the cylinder body 1 in a direction perpendicular to the paper surface of FIG.
An oil jet 12 is also connected via 1. The tip of the oil shet 12 opens below the piston 3 toward the oil supply lower opening into the piston 3. Note that the oil passage lO is connected to the discharge side of an oil pump (not shown). Further, the check valve 11 opens when the pressure in the oil passage 10 is higher than a predetermined value, that is, at high engine speeds when the heat load on the piston 3 is large, and allows the oil in the oil passage 10 to flow toward the oil jet 12 side. When the engine is running at low speeds, it closes to prevent oil pressure from dropping.
而して、ピストン３の熱負荷か高くなるエンジン高回転
時には、上述のように逆止弁１１か開いて油路１０内の
オイルをオイルジェット１２側へ導くため、オイルはオ
イルジェット１２からピストン３のオイル供給ロアに向
かフて勢いよく噴出し、該オイル供給ロアから油路６内
へ導入される。When the engine rotates at high speeds when the thermal load on the piston 3 increases, the check valve 11 opens as described above to guide the oil in the oil passage 10 to the oil jet 12, so that the oil flows from the oil jet 12 to the piston. The oil is vigorously ejected toward the oil supply lower part 3, and introduced into the oil passage 6 from the oil supply lower part.
そして、この油路６へ供給されたオイルは、該油路６を
流れてピストン３の頭部を冷却するか、本実施例では前
述のようにオイル供給ロアの開口部７ａの方かオイル排
出口８の開口部８ａよりも上方にあるため、該オイルの
オイル供給ロア側への逆流か防がれる。この結果、オイ
ル供給ロアから油路６へ供給されたオイルは該油路６を
オイル排出口８側へ向かってスムーズに効率良く流れ、
ピストン３の頭部はこのオイルによって効果的に冷却さ
れてその冷却効率か高められる。斯くて、ピストン３の
頭部を冷却したオイルは、オイル排出口８から不図示の
クランクケース下部に落下し、オイルポンプに吸引され
て再び各部の潤滑及び冷却に供される。The oil supplied to this oil passage 6 either flows through the oil passage 6 to cool the head of the piston 3, or in this embodiment, as described above, the oil is discharged to the opening 7a of the oil supply lower. Since it is located above the opening 8a of the outlet 8, the oil is prevented from flowing back toward the oil supply lower side. As a result, the oil supplied from the oil supply lower to the oil passage 6 flows smoothly and efficiently through the oil passage 6 toward the oil outlet 8 side.
The head of the piston 3 is effectively cooled by this oil, increasing its cooling efficiency. The oil that has cooled the head of the piston 3 falls from the oil outlet 8 to the lower part of the crankcase (not shown), is sucked into the oil pump, and is used again to lubricate and cool various parts.
尚、上記油路６は中子による鋳抜きによって形成される
か、第２図に示すようにピストン３の頭部にリング状に
成形されたパイプ１３を鋳込むことによって該パイプ１
３内に油路６を形成する場合にも、図示のようにパイプ
１３を角度αたけ傾斜させて鋳込み、オイル供給ロアの
油路６への開口部７ａをオイル排出口８の同油路６への
開口部８ａの上方に位置せしめれば、前記と１同様の効
果か得られる。又、第１図に示すオイルシェツト１２か
ら噴出されるオイルのオイル供給ロアての逆流、落下を
防ぐために、油路６側へのオイルの供給のみを許容する
逆止弁をオイル供給ロアに取っ付るようにしてもよい。The oil passage 6 may be formed by casting with a core, or by casting a ring-shaped pipe 13 into the head of the piston 3 as shown in FIG.
3, the pipe 13 is cast with an angle α as shown in the figure, and the opening 7a of the oil supply lower to the oil passage 6 is formed in the same oil passage 6 of the oil discharge port 8. If the opening 8a is located above the opening 8a, the same effect as in 1 above can be obtained. In addition, in order to prevent the oil ejected from the oil shet 12 shown in FIG. You may also do so.
更に、エンシンシリンタか垂直に対して傾斜する内燃機
関においては、水平面からの高さか高い側にオイル供給
口を設けるようにすれば、前記効果か更に高められる。Furthermore, in an internal combustion engine where the engine cylinder is inclined with respect to the vertical, the above effect can be further enhanced by providing the oil supply port at a higher side than the horizontal plane.
次に、本発明の変更実施例を第３図乃至第１０図に示す
。尚、これらの図においては、第１図及び第２図に示し
たと同一要素には同一符号を付しており、以下、それら
についての説明は省略する。Next, modified embodiments of the present invention are shown in FIGS. 3 to 10. In these figures, the same elements as shown in FIGS. 1 and 2 are designated by the same reference numerals, and description thereof will be omitted hereinafter.
第３図は第２実施例を示すピストンの縦断面図、第４図
は第３図の１７−ＩＶ線断面図、第５図は第４図のｖ−
ｖｉＩ！ＩＴ面図であり、本実施例ては油路６は第３図
に示すようにピストン３の同一高さ位置に形成されてい
るか、核油路６のオイル供給ロアの近傍には肉盛りされ
た小高い堰止め部６ａか形成されており、この堰止め部
６ａの上面にオイル供給ロアの開口部７ａか開口してい
る。従って、本実施例においても、オイル供給ロアの開
口部７ａかオイル排出口８の開口部８ａよりも上方に位
置することとなり、オイル供給口から油路６に供給され
るオイルのオイル供給ロア側への逆流は堰止め部６ａに
よって効果的に阻止されるため、オイルは油路６をオイ
ル排出口８側に向かってスムーズに効率良く流れ、ピス
トン３の頭部はこのオイルによって効果的に冷却されて
その冷却効率が高められる。尚、堰止め部６ａはピスト
ン３の鋳造時に同時に形成される。FIG. 3 is a longitudinal sectional view of a piston showing the second embodiment, FIG. 4 is a sectional view taken along line 17-IV in FIG. 3, and FIG.
viI! This is an IT side view, and in this embodiment, the oil passage 6 is formed at the same height position as the piston 3 as shown in FIG. 3, or the core oil passage 6 is built up near the oil supply lower. A slightly elevated dam part 6a is formed, and an opening 7a for the oil supply lower is opened on the upper surface of this dam part 6a. Therefore, in this embodiment as well, the opening 7a of the oil supply lower or the opening 8a of the oil discharge port 8 is located above the oil supply lower side of the oil supplied from the oil supply port to the oil passage 6. Since the backflow to the piston 3 is effectively blocked by the dam 6a, the oil flows smoothly and efficiently through the oil passage 6 toward the oil outlet 8, and the head of the piston 3 is effectively cooled by this oil. cooling efficiency is increased. Note that the damming portion 6a is formed at the same time as the piston 3 is cast.
又、第６図は本発明の第３実施例を示すピストンの縦断
面図、第７図は第６図の■−■線断面図、第８図は第７
図の■−■線断面図であり１本実施例ではピストン３の
頭部にリング状に成形されたパイプ１３か同一高さ位置
に鋳込まれ、該パイプ１３内に油路６が形成されている
が、パイプ１３のオイル供給ロア近傍はプレス成形によ
って油路６側（第８図中、上方）へ膨出せしめられ、こ
こに小高い堰止め部１３ａか形成されており、オイル供
給ロアの開口部７ａはこのパイプ１３の堰止め部１３ａ
に開口している。従って、本実施例においても、前記実
施例と同様にオイル供給ロアの開口部７ａかオイル排出
口８の開口部８ａよりも上方に位置することとなり、前
記実施例にて得られたと同様の効果か得られる。尚、ピ
ストン３の製造に際しては、予め堰止め部１３ａ及び開
口部７ａ、８ａか形成されたパイプ１３かピストン３の
頭部に鋳込まれる。6 is a vertical sectional view of a piston showing a third embodiment of the present invention, FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6, and FIG.
1. In this embodiment, a ring-shaped pipe 13 is cast into the head of the piston 3 at the same height, and an oil passage 6 is formed in the pipe 13. However, the area near the oil supply lower part of the pipe 13 is bulged toward the oil passage 6 side (upward in FIG. 8) by press molding, and a slightly elevated dam part 13a is formed here. The opening 7a is the dam part 13a of this pipe 13.
It is open to Therefore, in this embodiment as well, the opening 7a of the oil supply lower or the opening 8a of the oil discharge port 8 is located above the opening 8a of the oil outlet 8, similar to the embodiment described above, and the same effect as that obtained in the embodiment described above can be obtained. or can be obtained. In manufacturing the piston 3, the pipe 13, in which the damming part 13a and the openings 7a, 8a are formed in advance, is cast into the head of the piston 3.
更に、第９図は本発明の第４実施例を示すピストンのオ
イル供給口近傍の縦断面図、第１０図は第９図のＸ−Ｘ
線断面図であり１本実施例においてはパイプ１４をこれ
の上端部か油路６内に幾分突出するようにしてオイル供
給ロアに圧入している。Furthermore, FIG. 9 is a longitudinal cross-sectional view of the vicinity of the oil supply port of a piston showing a fourth embodiment of the present invention, and FIG.
This is a line sectional view, and in this embodiment, the pipe 14 is press-fitted into the oil supply lower with the upper end thereof protruding somewhat into the oil passage 6.
而して、上記パイプ１４の油路６内への突出部１４ａか
油路６でのオイルの逆流を阻止する堰の役目を果すこと
となるため、本実施例においても前記と同様の効果か得
られる。Therefore, the protruding portion 14a of the pipe 14 into the oil passage 6 serves as a dam to prevent oil from flowing backward in the oil passage 6, so that the present embodiment also has the same effect as described above. can get.
（発明の効果）
以上の説明で明らかな如く本発明によれば、ピストン頭
部にリング状の油路を形成し、該油路からはオイル供給
口とオイル排出口を下方に向かって開口せしめ、シリン
ダボア下端部に取り付けられたオイルシェツトから前記
オイル供給口に向かってオイルを噴出せしめるようにし
た内燃機関用ピストンの冷却機構において、前記オイル
供給口の前記油路への開口部を前記オイル排出口の同油
路への開口部よりも上方へ位置せしめたため、油路に供
給されたオイルをオイル排出口側へスムーズに効率良く
流すことかてき、これによってピストンの冷却効率を高
めることかてきるという効果か得られる。(Effects of the Invention) As is clear from the above description, according to the present invention, a ring-shaped oil passage is formed in the piston head, and an oil supply port and an oil discharge port are opened downward from the oil passage. In the piston cooling mechanism for an internal combustion engine, the oil is spouted toward the oil supply port from an oil shed attached to the lower end of the cylinder bore, and the opening of the oil supply port to the oil passage is connected to the oil discharge port. Because it is located above the opening to the oil passage, the oil supplied to the oil passage can flow smoothly and efficiently toward the oil discharge port, thereby increasing piston cooling efficiency. This effect can be obtained.
第１図は本発明の第１実施例を示す内燃機関用ピストン
の縦断面図、第２図は同第１実施例の変形例を示すピス
トンの縦断面図、第３図は本発明の第２実施例を示すピ
ストンの縦断面図、第４図は第３図のＩ’Ｖ−ＩＶ線断
面図、第５図は第４図の■−Ｖ線断面図、第６図は本発
明の第３実施例を示すピストンの縦断面図、第７図は第
６図の■−■線断面図、第８図は第７図の■−汀線断面
図、第９図は本発明の第４実施例を示すピストンのオイ
ル供給口近傍の縦断面図、第１０図は第９図のＸ−Ｘ線
断面図、第１１図は従来の冷却機構を示す断面図である
。
２・・・シリンタボア、３・・・ピストン、６・・・油
路、７・・・オイル供給口、７ａ・・・オイル供給口の
開口部、８・・・オイル排出口、８ａ・・・オイル排出
口の開口部、１２・・・オイルシェツト。
特許出願人 ヤマハ発動機株式会社
代 理 人 弁理士 山 下 亮
−第３図
第４図
第５図
第６図
第７図
鏑゛８図
第９図
第１０図
第１１図FIG. 1 is a vertical cross-sectional view of a piston for an internal combustion engine showing a first embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a piston showing a modification of the first embodiment, and FIG. 4 is a sectional view taken along line I'V-IV in FIG. 3, FIG. 5 is a sectional view taken along line ■-V in FIG. 4, and FIG. A vertical cross-sectional view of a piston showing the third embodiment, FIG. 7 is a cross-sectional view taken along the line ■-■ in FIG. 6, FIG. 8 is a cross-sectional view taken along the ■-shore line in FIG. FIG. 10 is a longitudinal cross-sectional view of a piston near an oil supply port showing an embodiment, FIG. 10 is a cross-sectional view taken along the line X--X in FIG. 9, and FIG. 11 is a cross-sectional view showing a conventional cooling mechanism. 2... Cylinder bore, 3... Piston, 6... Oil path, 7... Oil supply port, 7a... Oil supply port opening, 8... Oil discharge port, 8a... Oil discharge opening, 12... oil shed. Patent applicant: Yamaha Motor Co., Ltd. Representative: Ryo Yamashita, patent attorney
-Figure 3Figure 4Figure 5Figure 6Figure 7Figure 8Figure 9Figure 10Figure 11
Claims (1)
はオイル供給口とオイル排出口を下方に向かって開口せ
しめ、シリンダボア下端部に取り付けられたオイルジェ
ットから前記オイル供給口に向かってオイルを噴出せし
めるようにした内燃機関用ピストンの冷却機構において
、前記オイル供給口の前記油路への開口部を前記オイル
排出口の同油路への開口部よりも上方へ位置せしめたこ
とを特徴とする内燃機関用ピストンの冷却機構。A ring-shaped oil passage is formed in the piston head, and an oil supply port and an oil discharge port are opened downward from the oil passage, and an oil jet attached to the lower end of the cylinder bore is directed toward the oil supply port. In a cooling mechanism for a piston for an internal combustion engine that is configured to jet oil, an opening of the oil supply port to the oil passage is located above an opening of the oil discharge port to the oil passage. Features a piston cooling mechanism for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12133889A JPH02301648A (en) | 1989-05-17 | 1989-05-17 | Piston cooling mechanism for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12133889A JPH02301648A (en) | 1989-05-17 | 1989-05-17 | Piston cooling mechanism for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02301648A true JPH02301648A (en) | 1990-12-13 |
Family
ID=14808784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12133889A Pending JPH02301648A (en) | 1989-05-17 | 1989-05-17 | Piston cooling mechanism for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02301648A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19618625C1 (en) * | 1996-05-09 | 1997-10-23 | Daimler Benz Ag | Liquid-cooled pistons for internal combustion engines |
| DE19736135C1 (en) * | 1997-08-20 | 1998-10-29 | Daimler Benz Ag | Liquid cooled piston for internal combustion engine |
| FR2839116A1 (en) | 2002-04-24 | 2003-10-31 | Renault Sa | Internal combustion engine piston with cooling gallery has inner end of gallery outlet located above lower wall and inner end of inlet higher than outlet |
| DE10126493B4 (en) * | 2001-05-31 | 2006-05-11 | Ks Kolbenschmidt Gmbh | Piston with inclined to the main axes cooling channel |
| JP2010144580A (en) * | 2008-12-17 | 2010-07-01 | Toyota Motor Corp | Piston cooling channel forming annular body, method for forming piston cooling channel, and piston for internal combustion engine |
| EP2310649A1 (en) * | 2008-07-03 | 2011-04-20 | Volvo Lastvagnar AB | Piston for an internal combustion engine |
| WO2013062955A1 (en) * | 2011-10-24 | 2013-05-02 | Mahle International Gmbh | Piston for an internal combustion engine |
| WO2015108099A1 (en) * | 2014-01-17 | 2015-07-23 | トヨタ自動車 株式会社 | Structure for attaching oil jet valve |
| WO2018131356A1 (en) * | 2017-01-13 | 2018-07-19 | 日立オートモティブシステムズ株式会社 | Piston for internal combustion engine |
| DE102020000317A1 (en) | 2020-01-21 | 2021-07-22 | Ford Global Technologies, Llc | Internal combustion engine with oil-cooled piston and method for manufacturing an associated piston |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132050A (en) * | 1983-12-21 | 1985-07-13 | Toyota Motor Corp | Piston of internal-combustion engine |
-
1989
- 1989-05-17 JP JP12133889A patent/JPH02301648A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132050A (en) * | 1983-12-21 | 1985-07-13 | Toyota Motor Corp | Piston of internal-combustion engine |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19618625C1 (en) * | 1996-05-09 | 1997-10-23 | Daimler Benz Ag | Liquid-cooled pistons for internal combustion engines |
| FR2748524A1 (en) * | 1996-05-09 | 1997-11-14 | Daimler Benz Ag | LIQUID-COOLED PISTON FOR INTERNAL COMBUSTION ENGINES |
| US5845611A (en) * | 1996-05-09 | 1998-12-08 | Daimler-Benz Ag | Liquid-cooled piston for internal combustion engines |
| DE19736135C1 (en) * | 1997-08-20 | 1998-10-29 | Daimler Benz Ag | Liquid cooled piston for internal combustion engine |
| DE10126493B4 (en) * | 2001-05-31 | 2006-05-11 | Ks Kolbenschmidt Gmbh | Piston with inclined to the main axes cooling channel |
| FR2839116A1 (en) | 2002-04-24 | 2003-10-31 | Renault Sa | Internal combustion engine piston with cooling gallery has inner end of gallery outlet located above lower wall and inner end of inlet higher than outlet |
| EP2310649A4 (en) * | 2008-07-03 | 2012-07-04 | Volvo Lastvagnar Ab | Piston for an internal combustion engine |
| EP2310649A1 (en) * | 2008-07-03 | 2011-04-20 | Volvo Lastvagnar AB | Piston for an internal combustion engine |
| JP2010144580A (en) * | 2008-12-17 | 2010-07-01 | Toyota Motor Corp | Piston cooling channel forming annular body, method for forming piston cooling channel, and piston for internal combustion engine |
| DE102009054673B4 (en) * | 2008-12-17 | 2017-11-23 | Toyota Jidosha Kabushiki Kaisha | Annular cooling passage body, method for forming a piston cooling passage and piston for an internal combustion engine |
| WO2013062955A1 (en) * | 2011-10-24 | 2013-05-02 | Mahle International Gmbh | Piston for an internal combustion engine |
| US8739755B2 (en) | 2011-10-24 | 2014-06-03 | Mahle International Gmbh | Piston for an internal combustion engine |
| WO2015108099A1 (en) * | 2014-01-17 | 2015-07-23 | トヨタ自動車 株式会社 | Structure for attaching oil jet valve |
| JP2015135075A (en) * | 2014-01-17 | 2015-07-27 | トヨタ自動車株式会社 | Mounting structure for oil jet valve |
| US9822676B2 (en) | 2014-01-17 | 2017-11-21 | Toyota Jidosha Kabushiki Kaisha | Structure for attaching oil jet valve |
| WO2018131356A1 (en) * | 2017-01-13 | 2018-07-19 | 日立オートモティブシステムズ株式会社 | Piston for internal combustion engine |
| DE102020000317A1 (en) | 2020-01-21 | 2021-07-22 | Ford Global Technologies, Llc | Internal combustion engine with oil-cooled piston and method for manufacturing an associated piston |
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