CN107429598B - 用于附接排气收集器的设备 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
本发明涉及一种用于将排气收集器(11)附接至热力发动机的汽缸盖(14)的壁的设备(10),所述收集器以端部凸缘(20)延伸,该端部凸缘包括被紧固至该汽缸盖的下部带状件(24)以及直径上相反的上部带状件(23),该上部带状件包括接触表面(29),其特征在于,该设备包括附接条形件(30),该附接条形件包括用于附接至该汽缸盖的板(31)和用于压靠该上部带状件的板(32),该用于压靠该上部带状件的板具有与该上部带状件的接触表面(29)互补的形状并且包括可变形的弹性部分。
Description
技术领域
本发明涉及一种用于从机动车辆的热力发动机收集排气的系统。
更具体地讲,本发明涉及一种用于排气收集器附接至汽缸盖的壁的系统。
本发明涉及机动车辆的热力发动机。
现有技术
机动车辆的热力发动机包含有收集器,该收集器被连接至所述发动机的汽缸盖以便回收由位于气体循环方向上游的汽缸中的空气和燃料的混合物的燃烧而产生的排气。收集器通常借助于凸缘和螺栓、以非常刚性的方式附接至所述汽缸盖的壁。然而,汽缸盖和收集器的不同部件经受可变的加热,从而导致较大的温度差异。因此,由于通过此刚性附接而产生的扭曲以及由于所产生的膨胀力,彼此接触的不同部件之间产生密封问题。
此外,发动机舱的容积越来越受到限制,从而导致收集器与汽缸盖的附接形式越来越复杂,这可能降低所述附接件密封的可靠性。此外,发动机重量越来越轻,所述发动机的这些汽缸盖由轻质材料(例如,铝)制成,而该收集器通常由钢或铸铁制成。两种相接触的材料的热特性引起非常大的差异膨胀,由该汽缸盖和该收集器形成的系统必须对该差异膨胀进行补偿,以便避免开裂风险和密封损失。
已知将排气收集器附接至热力发动机的汽缸盖的装置,这些装置允许在该汽缸盖与该收集器之间一定程度的差异膨胀。该收集器以下部连接凸缘和上部连接凸缘延伸。所述下部凸缘和上部凸缘以直径上相反的方式布置,并且这些下部凸缘被接收在汽缸盖中的槽缝中,而这些上部凸缘通过被附接至所述汽缸盖的条形件而保持抵靠该汽缸盖。
因此,公开文件US 5918912披露了一种用于将排气收集器附接至热力发动机的汽缸盖的壁的装置。该汽缸盖的所述壁包含有连接表面,该收集器在一个连接末端处包括上部凸缘和下部凸缘。所述下部凸缘被紧密地保持在这些连接表面中,并且这些上部凸缘被收紧条形件保持抵靠所述汽缸盖的壁。
尤其对于由铝制成的汽缸盖以及由钢或铸铁制成的收集器而言,由于这两种材料之间非常大的热膨胀差异,该汽缸盖和该收集器的诸如此类的关联可能在高温下存在问题。可能产生游隙,并且不再确保该收集器与该汽缸盖之间的密封。此外,该汽缸盖的这些连接表面要求额外的机加工,这导致额外的制造阶段和额外费用。
公开文件FR-A1-2897101披露了一种用于将排气收集器附接至热力发动机的汽缸盖的壁的系统。该收集器在一个用于连接至该汽缸盖的末端处包括附接元件,该附接元件包含有斜切的连接表面。该附接系统由两个搁置在这些斜切的连接表面上的条形件组成并且被附接至该汽缸盖的壁。
一个缺点在于,该汽缸盖和该收集器的差异膨胀可能导致该上部条形件提升,随后导致对该系统的密封失败。
另一个缺点在于,该上部条形件是这样一种条形件,该条形件不具有伴随该收集器与该汽缸盖之间差异膨胀的任何变形区域。
公开文件US-A1-2005/0268602披露了一种用于排气收集器附接至发动机的汽缸盖的设备,所述收集器包含有被紧固至该汽缸盖的下部凸缘以及在直径上相反地定位并且紧密地保持在该汽缸盖与该附接条形件之间的上部凸缘,该上部凸缘或该附接条形件包含有弹性部分。
一个缺点在于,在该附接条形件与该上部凸缘之间存在游隙,该游隙可能导致密封失败。
另一个缺点在于,该弹性部分允许在该收集器与该汽缸盖之间的分隔,所述分隔可能导致密封失败。
本发明的目的是解决这些问题,并且本发明的目的之一是一种用于排气收集器附接至发动机的汽缸盖的壁的设备。
发明内容
更具体地讲,本发明涉及一种用于排气收集器附接至热力发动机的汽缸盖的壁的设备,所述收集器以端部凸缘延伸,该端部凸缘包括被紧固至该汽缸盖的下部带状件以及直径上相反的上部带状件,
其特征在于,该设备包括附接条形件,该附接条形件包含有用于附接至汽缸盖的第一板和用于压靠该上部带状件的第二板,该第二板具有与该上部带状件互补的形状并且具有可变形的部分。
以有利的方式,该附接条形件包含有用于压靠该收集器的上部带状件的第二板,所述第二板具有与该上部凸缘互补的形状以便确保该上部凸缘恒定地保持压靠该汽缸盖的壁。该第二板还包含有用于吸收该收集器与汽缸盖的壁之间的差异膨胀的可变形部分。
根据本发明的其他特征:
-该下部带状件围绕附接装置的轴线。
以有利的方式,该收集器的下部带状件围绕附接装置的轴线,这便于该收集器抵靠该汽缸盖的壁安装。
-该条形件的第一板与该第二压力板一起形成背离该汽缸盖的壁的大于90°的角度。
以有利的方式,该第一附接板基本上垂直于该第二压力板,这允许用于附接该收集器的设备的总体尺寸减小。此外,可以有利地布置所述设备以便将收集器附接至该汽缸盖的包含有折叠件的壁,以便符合任何空间要求。
-该附接条形件包含有连接在该第一附接板与该第二压力板之间的加强件。
以有利的方式,该附接条形件包含有连接在该第一附接板与该第二压力板之间的至少一个加强件,所述至少一个加强件允许在该条形件的两个板之间保持角度,以便保持上部凸缘压靠该汽缸盖的壁。
-通过折叠相同的板来获得该条形件的附接板和压力板。
以有利的方式,通过冲压或折叠相同的板来获得条形件的第一附接板和第二压力板,这允许更简单的制造。
-该上部凸缘的压力表面展示了斜切轮廓。
以有利的方式,该收集器的上部凸缘的压力表面包含有斜切轮廓,以便允许更有效地保持抵靠该汽缸盖的壁,这是由于第二压力板具有与压靠所述表面的上部凸缘互补的形状。
附图说明
本发明的其他特征和优点将从精读以下对通过非限制性实例的方式提供的并且在这些附图中描绘的本发明的具体实施例的说明中变得更清楚,在附图中:
-图1描绘了用于该收集器附接至该汽缸盖的设备的示意图。
-图2描绘了该附接条形件的示意图。
-图3在图1的与该汽缸盖的壁垂直的平面AA中描绘了附接设备的纵截面图。
具体实施方式
在以下说明中,完全相同的参考号指代完全相同的部件或具有类似功能的部件。
如图1描绘的,排气收集器11被附接至热力发动机(未描绘)的汽缸盖14的壁12,以用于收集发动机的汽缸中的燃烧而产生的排气。例如,所述排气于是朝向涡轮增压器13的涡轮机被引导。
该收集器在相对于竖直平面基本上倾斜的表面上被附接至该汽缸盖14的壁。根据图1和图3,该汽缸盖的壁展示了以倾斜的壁17延伸的基本上竖直的壁16,收集器11被附接而搁靠在倾斜的壁上。因此,倾斜的壁17与该汽缸盖的竖直壁16一起形成大约135°的折叠角17’。如图3所描绘的,所述倾斜的壁17包含有排气口18,排气管19经由该排气口排放气体。
收集器11包含有被附接至供应管21的一端的端部凸缘20,该供应管用于朝该涡轮增压器的涡轮机运送气体。所述端部凸缘包含有进气口22,该进气口连接至所述供应管21并且基本上面向汽缸盖14的排气口18。因此,以最佳的方式将排气从该汽缸盖引导至涡轮增压器13。
端部凸缘20包含有上部带状件23和下部带状件24,该下部带状件围绕附接装置25的轴线。所述附接装置25可以是嵌入汽缸盖14的倾斜的壁17中的螺钉。下部带状件24可包含有围绕所述附接装置25的轴线的一个开口或围绕所述轴线的两个齿。下部带状件24可包含有基本上斜切的轮廓,该轮廓允许减少材料质量并因此减小发动机重量。
上部带状件23包含有板,该板展示了基本上梯形的横截面并且包括与汽缸盖14的倾斜的壁17相接触的下面26、相反的上面27、以及在所述上部带状件23的周边上的斜切的侧向压力面28。因此,所述侧向压力面28展示了从连接至入口孔22的内部朝向根据与折叠角17’基本上互补的成角度的斜面的周边渐缩的轮廓。当该收集器附接至该汽缸盖的倾斜的壁17时,所述压力面基本上垂直于汽缸盖14的竖直壁16。所述压力面28包含有基本上矩形的接触表面29,该接触表面具有大于气体供应管的直径的宽度并具有深度。
根据本发明的设备包含有在图2中描绘的附接条形件30。所述附接条形件30包括附接板31和压力板32。
因此,附接板31包含有附接孔33,这些附接孔基本上对准了嵌入汽缸盖14的竖直壁16中的附接螺钉34并且这些附接螺钉穿过这些附接孔。
压力板32包含有压力表面35,该压力表面基本上与上部带状件23的压力面28的接触表面29互补。以优先的方式,所述压力板包含有基本上大于该气体供应管的直径的宽度并且包含有大于该接触表面的深度的深度。所述压力表面35与上部带状件23的接触表面29处于恒定的接触。因此,该压力板与该附接板形成大于或等于90°的展开角度36。该压力板包含有可变形的弹性部分37。该压力板32的所述可变形的部分覆盖该上部带状件的接触表面29。
以优先的方式,该压力板和该附接板是由相同的板通过冲压或折叠来获得,所述板例如由具有HE650D高强度的钢制成。该压力板的厚度大约为4mm,以便允许沿着垂直于所述板的轴线的弹性变形。
附接条形件30包含有布置在该附接板与该压力板之间的至少一个加强件38,以便在冷时使展开角度36保持其初始值。以优先的方式,该至少一个加强件在该压力板的减小的部分上延伸,以便不减小该压力板的变形可能性。根据图2,该至少一个加强件38包括基本上在该压力板的四分之一深度上延伸的凸台或肋。
温度非常高的气体的通过致使收集器11和端部凸缘20的供应管21的非常显著的加热。因此,热量相对于气体的流动轴线X基本上径向传播。于是,端部凸缘20能够随着基本上径向的温度梯度变形。于是,上部带状件23能够径向延伸,并且这些由所述膨胀产生的力于是主要通过斜切压力面28传递。上部带状件23于是能够基本上推按在压力板32上,该压力板将以弹性方式弯曲变形并且相对于该气体供应管基本上径向变形。该展开角度保持恒定并且保持该端部凸缘压靠该汽缸盖的倾斜的壁。凸缘20的膨胀于是通过压力板32的弹性变形而被吸收。
当发动机停止而变冷时,该压力板返回其原始形状并且保持压靠该上部带状件的压力面,以便保持该端部凸缘压靠该汽缸盖的壁。
该目的通过用于附接该收集器的设备10来实现。当变冷或变热时,在排气通过期间,该附接设备使该排气收集器保持压靠该汽缸盖的壁,以便避免密封失败。所述附接设备10包含有能够吸收该收集器的端部凸缘的横向膨胀的影响的附接条形件。当然,本发明不只是限于以上通过举例所述的此实现方式的实施例,相反地,本发明涵盖其所有变体。具体地讲,该汽缸盖的壁因此可以是简单平坦的,并且可能在该排气口的水平上不展示出任何偏移。该展开角度于是可能大于90°并且接近于135°。
Claims (5)
1.一种用于将排气收集器(11)附接至热力发动机的汽缸盖(14)的壁的设备(10),该汽缸盖的壁展示了以倾斜的壁(17)延伸的基本上竖直的壁(16),该收集器(11)被附接而搁靠在该倾斜的壁上,所述收集器以端部凸缘(20)延伸,该端部凸缘包括被紧固至该汽缸盖的下部带状件(24)以及直径上相反的上部带状件(23),该上部带状件包含有接触表面(29),
该设备包括附接条形件(30),该附接条形件包含有用于附接至该汽缸盖的该竖直的壁(16)上的附接板(31)和用于压靠该上部带状件的压力板(32),该用于压靠该上部带状件的压力板具有与该上部带状件的接触表面(29)互补的形状并且包含有可变形的弹性部分,
其特征在于,该下部带状件(24)围绕嵌入汽缸盖(14)的该倾斜的壁(17)中的附接装置(25)的轴线并且展示了斜切轮廓。
2.如权利要求1所述的设备,其特征在于,该附接板(31)与该压力板(32)一起形成背离该汽缸盖(14)的壁的大于90°的角度。
3.如权利要求1或2所述的设备,其特征在于,该附接条形件包含有连接在该附接板(31)与该压力板(32)之间的至少一个加强件(38)。
4.如权利要求1或2所述的设备,其特征在于,该条形件的该附接板(31)和该压力板(32)是通过冲压相同的板来获得的。
5.如权利要求1或2所述的设备,其特征在于,该端部凸缘(20)的该上部带状件(23)展示了朝向外周边渐缩的斜切轮廓。
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FR1551775A FR3033361B1 (fr) | 2015-03-03 | 2015-03-03 | Systeme de compensation de dilatation pour fixation par queue d'aronde |
PCT/FR2016/050456 WO2016139414A1 (fr) | 2015-03-03 | 2016-03-01 | Dispositif de fixation d'un collecteur de gaz d'échappement |
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JP2014145285A (ja) * | 2013-01-28 | 2014-08-14 | Honda Motor Co Ltd | 内燃機関のシリンダヘッド |
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US3941409A (en) * | 1973-02-16 | 1976-03-02 | Regie Nationale Des Usines Renault | Method and apparatus for attaching the exhaust manifold |
US20050268602A1 (en) * | 2004-03-05 | 2005-12-08 | Benteler Automobiltechnik Gmbh | Arrangement for securely mounting an exhaust manifold to the cylinder head of an internal combustion engine |
FR2897101A1 (fr) * | 2006-02-08 | 2007-08-10 | Renault Sas | Dispositif de fixation d'un collecteur |
WO2011113790A1 (de) * | 2010-03-18 | 2011-09-22 | Avl List Gmbh | Brennkraftmaschine mit einer verbindungsanordnung für einen zylinderkopf |
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CN107429598A (zh) | 2017-12-01 |
JP2018507353A (ja) | 2018-03-15 |
FR3033361A1 (fr) | 2016-09-09 |
FR3033361B1 (fr) | 2018-06-15 |
EP3265657B1 (fr) | 2019-07-24 |
JP6797128B2 (ja) | 2020-12-09 |
WO2016139414A1 (fr) | 2016-09-09 |
EP3265657A1 (fr) | 2018-01-10 |
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