CN101331309B - 内燃机活塞制造方法 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
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- B22D19/00—Casting in, on, or around objects which form part of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
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- 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
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- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
- Y10T29/49252—Multi-element piston making
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
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- Y10T29/49274—Piston ring or piston packing making
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Abstract
本发明涉及一种用于制造内燃机活塞(1)的方法,该活塞具有一个环形的、在活塞顶附近并在径向外部设置的冷却通道(9),该冷却通道在活塞销座(7)位于活塞销座孔(8)附近的区域(71)中具有与冷却通道(9)连接的活塞销座冷却通道(13),从而更好地冷却活塞销座(7)。
Description
技术领域
本发明涉及到一种用于制造内燃机活塞的方法。
背景技术
根据美国专利文献US 4662319已知一种内燃机用的组装式活塞,该活塞由带有活塞销座的活塞基体以及与其连接的活塞上部构成。该活塞基体在靠活塞顶侧具有一个环形的支承面,活塞上部支承在该支承面上,并且该支承面通过成锥形地成型的壁元件与活塞销座连接。这些壁元件构成一个接近活塞销座的环形空间,该空间在靠活塞顶侧由一个具有孔的环形元件覆盖,冷却油通过这些孔被导入到环形空间中,以冷却活塞销座。除此之外,该环形元件封闭了一个在活塞上部下侧中形成的、位于径向外部的空隙,从而产生一个封闭的、环形的冷却通道以冷却环形通道。这里的缺点在于:美国专利文献中的活塞结构复杂,这样,活塞制造成本很高并且售价昂贵。
发明内容
本发明的目的在于:避免现有技术的这些缺点。该目的可以通过用于制造内燃机活塞的方法来解决,其特征在于下列方法步骤:
-制造具有环形冷却通道形状的盐芯,该盐芯具有两个设置在盐芯相互对置的两侧上的、朝向径向内部的、具有活塞销座冷却通道形状的成型部,
-提供用于活塞的铸模,该铸模具有两个与活塞销座互补的,相互对置的成型部,以及两个相互对置的,可沿径向插入铸模的、用于两个设置在活塞销座中的活塞销座孔的滑动件,
-将盐芯放入铸模中并固定,使得活塞销座冷却通道的成型部位于为活塞销座设置的成型部背离活塞顶的一侧上,
-插入为活塞销座孔设置的滑动件,
-以液态的活塞材料填充铸模,在这里,盐芯周围被浇注,
-插入用于活塞内腔成型的滑动件,
-从铸模中取出活塞毛坯,
-钻出至少一个通到冷却通道中的进油通道以及至少一个与冷却通道连接的出油通道,
-通过进油通道和出油通道将盐芯从冷却通道排出,
-借助于切削加工的制造方法来完成活塞的加工。
根据本发明的有利的设计方案,将液态铝作为活塞材料浇注到铸模中。
根据本发明的另一有利的设计方案,将液态铸铁作为活塞材料浇注到铸模中。
根据本发明的另一有利的设计方案,两个设置于盐芯上的、并且相互对置的、用于活塞销座冷却通道的成型部,分别在一侧与盐芯连接,而在另一侧分别具有另一个用于大致在轴向上指向背离活塞顶的方向的出油孔的成型部。
根据本发明的另一有利的设计方案,具有活塞销座冷却通道形状的成型部相应的另一侧与盐芯连接。
根据本发明的另一有利的设计方案,设置于盐芯上的、用于活塞销座冷却通道的成型部,俯视为扁平形状。
附图说明
接下来将借助图示来说明本发明的几个实施例。
图1示出了具有一个环绕的冷却通道的、以透视图描述的活塞的剖视图,该冷却通道在活塞销座区域内分别具有一个活塞销座冷却通道,
图2示出了具有一个根据图2的冷却通道的、以透视图描述的活塞的剖视图,该冷却通道具有多个凸起形状的、设置于活塞顶侧的横断面扩张部,
图3示出了具有一个活塞销座冷却通道的、以透视图描述的活塞的剖视图,该活塞销座冷却通道仅通过一个进油孔与冷却通道连接,以及
图4示出了具有一个冷却通道的、以透视图描述的活塞的剖视图,该冷却通道在活塞销座区域内分别具有一个指向径向内部的、扁形的活塞销座冷却通道。
具体实施方式
图1示出了以透视图描述的、用于内燃机的、在活塞顶3中具有燃烧室凹腔2的活塞1的剖视图。活塞1的径向外表面具有一个毗邻于活塞顶3的火力岸4以及毗邻于火力岸4的活塞环带5,而环绕的活塞裙6与活塞环带5毗邻。在相对的两侧上,活塞裙6分别保持一个带有活塞销座孔8的活塞销座7。
为了冷却燃烧室凹腔2和火力岸5,活塞1在活塞顶附近且在径向外部具有一个环形的环绕冷却通道,冷却油通过一个通到活塞内腔14中的进油通道10,被导入到该冷却通道中,然后,通过一个在图中未示出的、通到活塞内腔14中的出油通道15再次从该冷却通道中被导出。
为了冷却两个相互对置的活塞销座7的、位于活塞销座孔8附近的、靠活塞顶侧的区域7’,冷却通道9分别与设置于两个活塞销座7的区域7’中的活塞销座冷却通道13连接,在这里,两个活塞销座冷却通道13分别通过一个进油孔11和一个出油孔12与冷却通道9连接。此外,两个活塞销座冷却通道13分别具有一个通到活塞内腔14中的出油通道15。
在这里,一部分通过进油通道10喷射到冷却通道9中的冷却油,通过进油孔11被导入活塞销座冷却通道13中,并且在冷却活塞销座7靠活塞顶侧的区域7’后,部分通过出油通道15被导出到活塞内腔14中,部分通过进油孔12被导回到冷却通道9中。
为了制造具有按本发明的冷却通道系统的活塞1,首先形成一个盐芯,该盐芯具有带有在其上形成的、分别带有一个出油通道15的活塞销座冷却通道13的冷却通道的形状。随后,将盐芯放入铸模中并在盐芯周围浇注活塞材料,即铝或铸铁。接着,在活塞1中钻出进油通道10和出油通道,盐芯的盐通过这些通道从活塞毛坯中被排掉。最后,借助于切削加工的制造方法来完成活塞。
在图2中描述了冷却通道9’的一种设计方案,该设计方案具有在整个周边上分布的、设置在靠活塞顶侧的、凸起形状的横断面扩张部16,这些横截面扩张部的目的在于:通过冷却通道9’在横断面扩张16区域内更接近燃烧室凹腔2的边缘,从而冷却油也更加靠近凹腔边缘,来改善燃烧室凹腔2经受高的热负荷的边缘的冷却。
在图3中示出了活塞销座冷却通道13’的一种设计方案,该设计方案仅通过出油通道15与活塞内腔14连接,使得所有流经活塞销座冷却通道13’的油都被导入到活塞内腔14中。
根据图4的、冷却通道9”的设计方案,在活塞销座7的靠活塞顶侧的区域7’内,分别具有一个径向朝内的、俯视为扁平形状的活塞销座冷却通道17,冷却油从其中流出,经过出油通道15流入到活塞内腔14中。借助于该扁形的活塞销座冷却通道17,活塞销座7相对较大的区域被与冷却油接触的冷却表面覆盖,从而借此实现了活塞销座7的区域7’的良好冷却。
附图标记清单:
1 活塞
2 燃烧室凹腔
3 活塞顶
4 火力岸
5 活塞环带
6 活塞裙
7 活塞销座
7’ 活塞销座区域
8 活塞销座孔
9,9’,9” 冷却通道
10 进油通道
11 进油孔
12 出油孔
13,13’活塞销座冷却通道
14 活塞内腔
15 出油通道
16 横断面扩张部
17 活塞销座冷却通道
Claims (6)
1.一种用于制造内燃机活塞(1)的方法,其特征在于下列方法步骤:
-制造具有环形冷却通道(9,9’,9”)形状的盐芯,该盐芯具有两个设置在盐芯相互对置的两侧上的、朝向径向内部的、具有活塞销座冷却通道(13,13’,17)形状的成型部,
-提供用于活塞(1)的铸模,该铸模具有两个与活塞销座(7)互补的,相互对置的成型部,以及两个相互对置的,可沿径向插入铸模的、用于两个设置在活塞销座(7)中的活塞销座孔(8)的滑动件,
-将盐芯放入铸模中并固定,使得活塞销座冷却通道(13,13’,17)的成型部位于为活塞销座(7)设置的成型部背离活塞顶的一侧上,
-插入为活塞销座孔(8)设置的滑动件,
-以液态的活塞材料填充铸模,在这里,盐芯周围被浇注,
-插入用于活塞内腔(14)成型的滑动件,
-从铸模中取出活塞毛坯,
-钻出至少一个通到冷却通道(9,9’,9”)中的进油通道(10)以及至少一个与冷却通道(9,9’,9”)连接的出油通道,
-通过进油通道(10)和出油通道将盐芯从冷却通道(9,9’,9”)排出,
-借助于切削加工的制造方法来完成活塞(1)的加工。
2.按权利要求6的方法,其特征在于:将液态铝作为活塞材料浇注到铸模中。
3.按权利要求1的方法,其特征在于:将液态铸铁作为活塞材料浇注到铸模中。
4.按权利要求1的方法,其特征在于:两个设置于盐芯上的、并且相互对置的、用于活塞销座冷却通道(13’)的成型部,分别在一侧与盐芯连接,而在另一侧分别具有另一个用于大致在轴向上指向背离活塞顶的方向的出油孔(15)的成型部。
5.按权利要求4的方法,其特征在于:具有活塞销座冷却通道(13)形状的成型部相应的另一侧与盐芯连接。
6.按权利要求1到3其中之一的方法,其特征在于:设置于盐芯上的、用于活塞销座冷却通道(17)的成型部,俯视为扁平形状。
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PCT/DE2006/002255 WO2007073719A1 (de) | 2005-12-21 | 2006-12-15 | Kolben für einen verbrennungsmotor und verfahren zu dessen herstellung |
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DE102008020231A1 (de) * | 2008-04-22 | 2009-10-29 | Mahle International Gmbh | Gießkern zur Bildung eines Kühlkanals |
DE102008002571A1 (de) * | 2008-06-20 | 2009-12-31 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor |
DE102008031863A1 (de) * | 2008-07-05 | 2010-01-07 | Mahle International Gmbh | Einlegeteil für einen Kolben eines Verbrennungsmotors sowie mit dem Einlegeteil versehener Kolben oder Kolbenkopf |
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DE102009027148B4 (de) * | 2009-06-24 | 2015-02-12 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor mit Kühlkanalsystem |
US8210234B2 (en) * | 2010-02-19 | 2012-07-03 | GM Global Technology Operations LLC | Combustion chamber wall cooling chamber design for semi-permanent mold cylinder head casting |
DE102010015568A1 (de) * | 2010-04-19 | 2011-10-20 | Ks Kolbenschmidt Gmbh | Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen |
CN102218641A (zh) * | 2010-04-19 | 2011-10-19 | 昆山广兴电子有限公司 | 金属扇框的制造方法 |
DE102011114105A1 (de) * | 2010-12-18 | 2012-06-21 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
CN102151794B (zh) * | 2011-02-23 | 2013-10-23 | 江苏大学 | 一种活塞重力铸造方法及装置 |
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KR102013436B1 (ko) * | 2018-01-12 | 2019-08-22 | 동양피스톤 주식회사 | 내연기관용 피스톤 |
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DE102018218497A1 (de) * | 2018-10-29 | 2020-04-30 | Mahle International Gmbh | Kolben einer Brennkraftmaschine |
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2006
- 2006-12-15 US US12/086,841 patent/US7921555B2/en not_active Expired - Fee Related
- 2006-12-15 CN CN2006800473511A patent/CN101331309B/zh not_active Expired - Fee Related
- 2006-12-15 KR KR1020087014506A patent/KR20080080546A/ko not_active Application Discontinuation
- 2006-12-15 EP EP06828686A patent/EP1963655A1/de not_active Withdrawn
- 2006-12-15 WO PCT/DE2006/002255 patent/WO2007073719A1/de active Application Filing
- 2006-12-15 JP JP2008546114A patent/JP2009520901A/ja active Pending
- 2006-12-15 BR BRPI0620283-7A patent/BRPI0620283A2/pt not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
---|---|
JP2009520901A (ja) | 2009-05-28 |
CN101331309A (zh) | 2008-12-24 |
US7921555B2 (en) | 2011-04-12 |
US20090025550A1 (en) | 2009-01-29 |
BRPI0620283A2 (pt) | 2011-11-08 |
KR20080080546A (ko) | 2008-09-04 |
EP1963655A1 (de) | 2008-09-03 |
WO2007073719A1 (de) | 2007-07-05 |
DE102005061075A1 (de) | 2007-06-28 |
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