JPH0427380B2 - - Google Patents
Info
- Publication number
- JPH0427380B2 JPH0427380B2 JP61292815A JP29281586A JPH0427380B2 JP H0427380 B2 JPH0427380 B2 JP H0427380B2 JP 61292815 A JP61292815 A JP 61292815A JP 29281586 A JP29281586 A JP 29281586A JP H0427380 B2 JPH0427380 B2 JP H0427380B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- bowl
- piston
- peripheral wall
- chamber bowl
- 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 - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 claims description 57
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0603—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
-
- 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
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、直噴デイーゼルエンジン用ピストン
に関し、始動時の青白煙の発生を抑制すること、
エンジンの高速・小形化を図ること、及びピスト
ンスラツプの発生を軽減できるようにする技術で
ある。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a piston for a direct injection diesel engine, and is directed to suppressing the generation of blue-white smoke during startup;
This is a technology that allows engines to be made faster and more compact, and to reduce the occurrence of piston slap.
〈従来の技術〉
直噴デイーゼルエンジン用ピストンは、一般に
は、第４図に示すように、ピストンヘツド６に燃
焼室Ａが凹入形成されているだけであつた。<Prior Art> Generally speaking, a piston for a direct injection diesel engine simply has a combustion chamber A recessed in a piston head 6, as shown in FIG.
〈発明が解決しようとする問題点〉 上記従来構造では次の問題がある。<Problem that the invention seeks to solve> The above conventional structure has the following problems.
(イ) エンジンの冷機始動時に、燃焼室Ａが温たま
りにくいため圧縮温度が低く、不完全燃焼を起
して青白煙を発生させる。(b) When the engine is started cold, the compression temperature is low because combustion chamber A does not warm up easily, causing incomplete combustion and producing blue-white smoke.
(ロ) 燃焼室Ａの強度を保持するために、その底壁
２０の肉厚を厚くしなければならないので、ピ
ストンＰの重量が大きくなり、エンジンの運転
速度は低速にならざるを得ない。(b) In order to maintain the strength of the combustion chamber A, the thickness of the bottom wall 20 must be increased, so the weight of the piston P increases, and the operating speed of the engine must be reduced.
(ハ) 燃焼室底壁２０の肉厚が厚くなるのに伴つて
ピストンハイトＨが大きくなるので、エンジン
が大形化する。(c) As the bottom wall 20 of the combustion chamber becomes thicker, the piston height H becomes larger, so the engine becomes larger.
(ニ) 上記(ロ)及び(ハ)で述べたように、ピストンＰの
重量が大きいうえピストンハイトＨが大きいの
で、ピストンスラツプが大きい。(d) As mentioned in (b) and (c) above, the weight of the piston P is large and the piston height H is large, so the piston slap is large.
本発明は、上記の問題点(イ)〜(ニ)を解消して、始
動時の青白煙の発生を抑制すること、エンジンを
高速で運転できるうえ小形のものにできるように
すること、及びピストンスラツプの発生を軽減で
きるようにすることを目的とする。 The present invention solves the above-mentioned problems (a) to (d), suppresses the generation of blue-white smoke during startup, allows the engine to be operated at high speed, and can be made compact. The purpose is to reduce the occurrence of piston slap.
〈問題点を解決するための手段〉
本発明は上記目的を達成するために、前記の従
来構造に次の改良を加えたものである。<Means for Solving the Problems> In order to achieve the above object, the present invention adds the following improvements to the above conventional structure.
即ち、燃焼室Ａを取囲む燃焼室ボウル８を耐熱
耐圧性金属材料でピストン本体１とは別体の独立
部品として形成し、燃焼室ボウル８の上周縁部８
ａからヒートダム用鍔部１０を介して取付用周壁
部１１を燃焼室ボウル８の周側部分に形成し、ピ
ストンヘツド６にボウル組込穴７をあけ、ボウル
組込穴７の内周壁１３に嵌合固定部１４を形成
し、ボウル組込穴７に燃焼室ボウル８を非接触状
に挿入するとともに、燃焼室ボウル８の取付用周
壁部１１をボウル組込穴７の嵌合固定部１４に内
嵌固定した事を特徴とするものである。 That is, the combustion chamber bowl 8 surrounding the combustion chamber A is formed of a heat-resistant and pressure-resistant metal material as an independent component separate from the piston body 1, and the upper peripheral edge 8 of the combustion chamber bowl 8 is
From a, a mounting peripheral wall part 11 is formed on the peripheral side of the combustion chamber bowl 8 via the heat dam collar part 10, a bowl assembly hole 7 is formed in the piston head 6, and a mounting peripheral wall part 11 is formed on the inner peripheral wall 13 of the bowl assembly hole 7. A fitting fixing part 14 is formed, and the combustion chamber bowl 8 is inserted into the bowl mounting hole 7 in a non-contact manner, and the mounting peripheral wall part 11 of the combustion chamber bowl 8 is inserted into the fitting fixing part 14 of the bowl mounting hole 7. It is characterized by being fixed inside.
〈作用〉 本発明は次のように作用する。<Effect> The invention works as follows.
燃焼室ボウル８は、耐熱耐圧性の金属材料で構
成されるので、燃焼室Ａの底壁２０の強度を保持
しながらも肉厚の薄いものにつくることができ
る。これに伴つて、燃焼室ボウル８は、体積が小
さくなつて熱容量も小さくてすむ。また、ボウル
組込穴７に対して燃焼室ボウル８を非接触状に挿
入したうえ、この燃焼室ボウル８をヒートダム用
鍔部１０を介してピストン本体１に取付けたの
で、燃焼室ボウル８からピストンヘツド６への燃
焼熱の流出が極めて少なくなる。 Since the combustion chamber bowl 8 is made of a heat-resistant and pressure-resistant metal material, it can be made thin while maintaining the strength of the bottom wall 20 of the combustion chamber A. Accordingly, the combustion chamber bowl 8 has a smaller volume and a smaller heat capacity. In addition, the combustion chamber bowl 8 was inserted into the bowl installation hole 7 in a non-contact manner, and the combustion chamber bowl 8 was attached to the piston body 1 via the heat dam collar 10. The outflow of combustion heat to the piston head 6 is extremely reduced.
上記のように燃焼室ボウル８は、熱容量が小さ
いうえ燃焼熱の流出も極めて少ないので、エンジ
ンの冷機始動時に燃焼室ボウル８の温度が急速に
高まり、燃焼室内の圧縮温度も急速に高まる。こ
のため、燃料の不完全燃焼が起りにくくなり、青
白煙の発生は抑制される。また、取付用周壁部は
燃焼室ボウルの周側部分に形成され、ボウル組込
穴の嵌合固定部に内嵌固定されるので、燃焼室ボ
ウルはその周側部分でピストン本体に取付け固定
され、しかも、燃焼室ボウルの底壁が薄いので、
ピストンハイトは小さく形成される。 As described above, the combustion chamber bowl 8 has a small heat capacity and very little combustion heat flows out, so the temperature of the combustion chamber bowl 8 increases rapidly when the engine is started cold, and the compression temperature within the combustion chamber also increases rapidly. Therefore, incomplete combustion of the fuel is less likely to occur, and the generation of blue-white smoke is suppressed. In addition, the mounting peripheral wall part is formed on the peripheral side of the combustion chamber bowl, and is fitted and fixed into the fitting fixing part of the bowl assembly hole, so that the combustion chamber bowl is attached and fixed to the piston body at the peripheral side part. , Moreover, since the bottom wall of the combustion chamber bowl is thin,
The piston height is formed small.
〈実施例〉 以下、本発明の実施例を図面により説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.
第１図と第２図は一実施例を示し、第１図はピ
ストンの縦断面図、第２図は第１図の−線矢
視断面図である。 1 and 2 show one embodiment, FIG. 1 being a longitudinal cross-sectional view of a piston, and FIG. 2 being a cross-sectional view taken along the - line in FIG. 1.
図中、１はピストン本体で、これがシリンダ２
内に径方向に所定の隙間をあけて上下移動自在に
挿入される。このピストン本体１に横向き貫通状
に形成したピストンピン孔３に、コネクチングロ
ツド４の小端部４ａがピストンピン（図示せず）
を介して連結される。 In the figure, 1 is the piston body, which is the cylinder 2.
It is inserted vertically movably with a predetermined gap in the radial direction. The small end 4a of the connecting rod 4 is inserted into the piston pin hole 3 formed laterally through the piston body 1 so that a piston pin (not shown) is inserted.
connected via.
上記ピストン本体１において、ピストンヘツド
６の上面側からピストンピン孔３に向けてボウル
組込穴７が連通状に形成され、ボウル組込穴７に
燃焼室ボウル８が内嵌固定される。この燃焼室ボ
ウル８は、ステンレス鋼等の耐熱耐圧性金属材料
でピストン本体１とは別体の独立部品として有底
筒状に形成される。この燃焼室ボウル８内に燃焼
室Ａが形成される。 In the piston body 1, a bowl assembly hole 7 is formed in communication from the upper surface side of the piston head 6 toward the piston pin hole 3, and a combustion chamber bowl 8 is fitted and fixed into the bowl assembly hole 7. The combustion chamber bowl 8 is made of a heat-resistant and pressure-resistant metal material such as stainless steel, and is formed as an independent component separate from the piston body 1 into a cylindrical shape with a bottom. A combustion chamber A is formed within this combustion chamber bowl 8.
次に、上記燃焼室ボウル８をピストン本体１に
固定するための構造を説明する。 Next, a structure for fixing the combustion chamber bowl 8 to the piston body 1 will be explained.
燃焼室ボウル８の上周縁部８ａからヒートダム
用鍔部１０を介して取付用周壁部１１が下向きに
燃焼室ボウル８の周側部分へ連出される。この取
付用周壁部１１とボウル周壁部８ｂとの間に環状
溝１２が形成されている。 A mounting peripheral wall part 11 is extended downward from the upper peripheral edge part 8a of the combustion chamber bowl 8 to the peripheral part of the combustion chamber bowl 8 via the heat dam collar part 10. An annular groove 12 is formed between the mounting peripheral wall part 11 and the bowl peripheral wall part 8b.
一方、ボウル組込穴７の上部内周壁１３に平面
視円形の嵌合固定部１４が形成される。そして、
ボウル組込穴７に燃焼室ボウル８が非接触状に挿
入されるとともに、このボウル８の取付用周壁部
１１がボウル組込穴７の嵌合固定部１４に挿嵌さ
れる。この挿嵌部１５の下寄部１５ａが締嵌状態
に嵌合されるとともに、上寄部１５ｂが遊嵌状態
に嵌合される。 On the other hand, a fitting fixing portion 14 having a circular shape in plan view is formed on the upper inner circumferential wall 13 of the bowl assembly hole 7 . and,
The combustion chamber bowl 8 is inserted into the bowl assembling hole 7 in a non-contact manner, and the mounting peripheral wall portion 11 of the bowl 8 is inserted into the fitting fixing portion 14 of the bowl assembling hole 7. The lower part 15a of the insertion part 15 is tightly fitted, and the upper part 15b is loosely fitted.
上記のようにピストンを構成したため、エンジ
ンの冷機始動時には、定常運転時に比べて燃焼室
ボウル８が収縮して燃焼室Ａの容積が小さくな
る。このため、冷機始動時に圧縮比が大きくなつ
て圧縮温度が高まるので、青白煙が生じにくくな
る。 Since the piston is configured as described above, when the engine is started cold, the combustion chamber bowl 8 contracts and the volume of the combustion chamber A becomes smaller than during steady operation. For this reason, when the engine is started cold, the compression ratio increases and the compression temperature increases, making it difficult for blue-white smoke to occur.
なお、上記実施例では、挿嵌部１５の嵌合状態
を下寄部１５ａと上寄部１５ｂとで異なるように
したが、これは、下寄部１５ａと上寄部１５ｂと
の少なくとも一方が締嵌状態であればよい。 In the above embodiment, the fitting state of the insertion part 15 is different between the lower part 15a and the upper part 15b, but this is because at least one of the lower part 15a and the upper part 15b is It suffices as long as it is tightly fitted.
第３図は他の実施例を示し、上記実施例とは異
なる構成について説明する。 FIG. 3 shows another embodiment, and a different configuration from the above embodiment will be explained.
本実施例では、燃焼室ボウル８の取付用周壁部
１１とボウル組込穴７の内周壁１３との挿嵌部１
５が段付きに形成される。また、ボウル組込穴７
の下縁に沿つて防油カバー１７が取付けられ、こ
れによつて燃焼室ボウル８の下側が覆われる。こ
のため、ピストン本体１内部を飛散する潤滑油に
よつて燃焼室ボウル８が冷却されることがなくな
る。また、防油カバー１７によつて燃焼室ボウル
８からの放射熱を遮へいできるので、潤滑油の炭
化が防止される。 In this embodiment, the fitting part 1 between the mounting peripheral wall part 11 of the combustion chamber bowl 8 and the inner peripheral wall 13 of the bowl installation hole 7 is
5 is formed in a stepped manner. In addition, bowl assembly hole 7
An oil-proof cover 17 is installed along the lower edge of the combustion chamber bowl 8, thereby covering the underside of the combustion chamber bowl 8. Therefore, the combustion chamber bowl 8 is not cooled by the lubricating oil splashing inside the piston body 1. Further, since the oil-proof cover 17 can shield radiant heat from the combustion chamber bowl 8, carbonization of the lubricating oil is prevented.
〈発明の効果〉
本発明は上記のように構成され作用することか
ら次の効果を奏する。<Effects of the Invention> Since the present invention is configured and operates as described above, it has the following effects.
(イ) 燃焼室ボウルはその肉厚が薄いものですむの
で熱容量が小さいうえ、燃焼室ボウルからピス
トンヘツドに熱が逃げにくい。このため、エン
ジンの冷機始動時に、燃焼室ボウルの温度も燃
焼室内の圧縮温度も急速に高まる。この結果、
燃料の不完全燃焼がなくなり、青白煙の発生は
抑制される。(a) The combustion chamber bowl only needs to be thin, so its heat capacity is small, and it is difficult for heat to escape from the combustion chamber bowl to the piston head. Therefore, when the engine is started cold, both the temperature of the combustion chamber bowl and the compression temperature within the combustion chamber increase rapidly. As a result,
Incomplete combustion of fuel is eliminated, and the generation of blue-white smoke is suppressed.
(ロ) 燃焼室ボウルの肉厚が薄いものですむので、
燃焼室の底壁の肉厚が薄くなる。その分、ピス
トンの重量が軽くなるので、エンジンの運転速
度を速くできる。(b) Since the combustion chamber bowl only needs to be thin,
The bottom wall of the combustion chamber becomes thinner. As the piston weighs less, the engine can run faster.
(ハ) また、燃焼室の底壁が薄くなるうえ、燃焼室
ボウルはその周側部分でピストン本体に取付け
固定されることからピストンハイトも小さくな
るので、エンジンを小形のものにつくることが
できる。(c) In addition, the bottom wall of the combustion chamber is thinner, and the combustion chamber bowl is attached and fixed to the piston body at its circumference, so the piston height is also reduced, allowing the engine to be made smaller. .
(ニ) 上記(ロ)及び(ハ)で述べたように、ピストンの重
量が軽くなるうえピストンハイトも小さくなる
ので、ピストンスラツプの発生が軽減される。(d) As mentioned in (b) and (c) above, the weight of the piston is reduced and the piston height is also reduced, so the occurrence of piston slap is reduced.
第１図から第３図は本発明の実施例を示し、第
１図と第２図はその一実施例で、第１図はピスト
ンの縦断面図、第２図は第１図の−線矢視断
面図、第３図は他の実施例を示す部分図で、第４
図は従来例を示す縦断面図である。
１……ピストン本体、６……ピストンヘツド、
７……ボウル組込穴、８……燃焼室ボウル、８ａ
……上周縁部、１０……ヒートダム用鍔部、１１
……取付用周壁部、１３……内周壁、１４……嵌
合固定部、Ａ……燃焼室。
1 to 3 show embodiments of the present invention, and FIGS. 1 and 2 are one embodiment of the invention, in which FIG. 1 is a vertical cross-sectional view of a piston, and FIG. 3 is a partial view showing another embodiment;
The figure is a longitudinal sectional view showing a conventional example. 1... Piston body, 6... Piston head,
7...Bowl assembly hole, 8...Combustion chamber bowl, 8a
...Top periphery, 10...Flame for heat dam, 11
... Attachment peripheral wall part, 13 ... Inner peripheral wall, 14 ... Fitting fixing part, A ... Combustion chamber.
Claims (1)
成る直噴デイーゼルエンジン用ピストンにおい
て、 燃焼室Ａを取囲む燃焼室ボウル８を耐熱耐圧性
金属材料でピストン本体１とは別体の独立部品と
して形成し、 燃焼室ボウル８の上周縁部８ａからヒートダム
用鍔部１０を介して取付用周壁部１１を燃焼室ボ
ウル８の周側部分に形成し、 ピストンヘツド６にボウル組込穴７をあけ、ボ
ウル組込穴７の内周壁１３に嵌合固定部１４を形
成し、 ボウル組込穴７に燃焼室ボウル８を非接触状に
挿入するとともに、燃焼室ボウル８の取付用周壁
部１１をボウル組込穴７の嵌合固定部１４に内嵌
固定した事を特徴とする直噴デイーゼルエンジン
用ピストン。[Scope of Claims] 1. In a piston for a direct injection diesel engine in which a combustion chamber A is recessed in a piston head 6, a combustion chamber bowl 8 surrounding the combustion chamber A is made of a heat-resistant and pressure-resistant metal material and is connected to the piston body 1. is formed as a separate independent part, and a mounting peripheral wall part 11 is formed on the peripheral side of the combustion chamber bowl 8 from the upper peripheral part 8a of the combustion chamber bowl 8 via the heat dam collar part 10, and is attached to the piston head 6. A bowl installation hole 7 is drilled, a fitting fixing part 14 is formed on the inner circumferential wall 13 of the bowl installation hole 7, and the combustion chamber bowl 8 is inserted into the bowl installation hole 7 in a non-contact manner. A piston for a direct injection diesel engine, characterized in that a mounting peripheral wall part 11 is internally fixed to a fitting fixing part 14 of a bowl assembling hole 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61292815A JPS63147960A (en) | 1986-12-08 | 1986-12-08 | Piston for direct injection type diesel-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61292815A JPS63147960A (en) | 1986-12-08 | 1986-12-08 | Piston for direct injection type diesel-engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63147960A JPS63147960A (en) | 1988-06-20 |
| JPH0427380B2 true JPH0427380B2 (en) | 1992-05-11 |
Family
ID=17786708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61292815A Granted JPS63147960A (en) | 1986-12-08 | 1986-12-08 | Piston for direct injection type diesel-engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63147960A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10063568A1 (en) | 2000-12-20 | 2002-07-04 | Mahle Gmbh | Cooling channel piston for a diesel engine with direct injection with a piston diameter of 100 mm |
| DE102010009891A1 (en) * | 2010-03-02 | 2011-09-08 | Mahle International Gmbh | Piston for an internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593937A (en) * | 1979-01-11 | 1980-07-16 | Gen Motors Corp | Oillcooled piston assembly |
-
1986
- 1986-12-08 JP JP61292815A patent/JPS63147960A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593937A (en) * | 1979-01-11 | 1980-07-16 | Gen Motors Corp | Oillcooled piston assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63147960A (en) | 1988-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |