CN1086501C - 电绝缘和气密式引线 - Google Patents

电绝缘和气密式引线 Download PDF

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Publication number
CN1086501C
CN1086501C CN96194648A CN96194648A CN1086501C CN 1086501 C CN1086501 C CN 1086501C CN 96194648 A CN96194648 A CN 96194648A CN 96194648 A CN96194648 A CN 96194648A CN 1086501 C CN1086501 C CN 1086501C
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wire
lead
described lead
wires
conductor
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CN1187263A (zh
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沃尔夫冈·毛斯
罗尔夫·布吕克
卡斯滕·克鲁泽
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Vitesco Technologies Lohmar Verwaltungs GmbH
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Emitec Gesellschaft fuer Emissionstechnologie mbH
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/26Lead-in insulators; Lead-through insulators
    • H01B17/30Sealing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F01N3/2026Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明涉及一种穿过内燃机排气系统尤其是可电加热的催化转化器的金属外套的至少两个电导体的电绝缘和气密式引线,其中,外套在引线所在区有一个套管,导体通过此套管延伸。为了避免电磁脉冲,建议,导体互相同轴导引。

Description

电绝缘和气密式引线
本发明涉及穿过内燃机排气系统尤其是可电加热的催化转化器的金属外套的至少两个电导体的电绝缘和气密式引线。
由先有技术已知许多用于完全不同的使用目的的电绝缘和气密式引线。
鉴于空气污染造成的后果,为了限制尤其是汽车的废气排放,公布了越来越严格的规定。随着降低汽车废气中有害物质的要求不断提高,采用了越来越复杂的内燃机废气净化系统。尤其为了在内燃机冷起动阶段减少有害物排放,除调整好的三路催化剂外还使用可电加热的催化转化器。由例如wo92/02714已知这样一种装置。在这种可电加热的催化转化器中存在的问题是,从电源到可电加热的催化转化器的电导体的电引线。由wo94/18442已知一种针对电引线建议的解决方案。按wo94/18442建议,将电绝缘和气密的引线设计为分两个位于前后的段,其中位置靠近排气系统的第一段设计为电绝缘和耐温的,但不需要完全气密,而远离排气系统的第二段则设计为针对较低温度的气密和电绝缘的引线。在此已知的引线中,两个电导体并列地穿过外套。
以此为出发点,本发明的目的是进一步改进已知的电绝缘和气密式引线,使之能经济地生产。除此之外,通过引线的设计应提供一种使电导线方便连接的可能性。
为达到此目的,建议了一种穿过内燃机排气系统尤其是可电加热的催化转化器的金属外套的至少两个电导体的电绝缘和气密式引线,其中,外套在引线所在区有一个套管,导体通过此套管延伸,在这种情况下这些导体互相同轴地在套管内导引。
采用引线的这种设计,为了供电只需唯一的一个通向可电加热的催化转化器的接头。可采用同轴线作为连接电缆,这样可减少电磁脉冲。此外还减小了所需空间。同轴式引线的另一个优点在于,它可以借助于传统的栓柱焊接法安装在催化转化器相应的接头或结构上。
按本发明的电绝缘和气密式引线的有利的进一步设计是从属权利要求的主题。
按一种最佳实施形式,作为绝缘材料的是一种由氧化镁和氧化铝(Al2O3)组成的压制的粉末混合物。为达到气密性的要求,使引线至少在其一端是气密地封闭的。
按另一个思想建议,为了气密地设计引线采用玻璃作为密封材料。这种密封材料玻璃或搪瓷,也可以有利地应用于至少两个穿过内燃机排气系统尤其是可电加热的催化转化器金属外套的电导体引线的气密设计,其中,外套在引线所在区有一个套管,导体通过此套管延伸和并列地而不是同轴地排列。这种密封材料有如此高的熔点,以致与转化器紧邻处仍能实现密封。
为了降低生产成本,建议采用等离子喷镀氧化铝来获得引线的气密性和电绝缘。因此可以在一道工序中同时达到电绝缘和气密性的目的。
采用陶瓷填料可获得如等离子喷镀氧化铝时相同的优点。
下面借助于一个实施例说明其它的优点和特征。在附图中表示:
图1通过在可电加热的蜂窝体上的一个引线的示意横截面;以及
图2按图1的引线的俯视图
图1只是示意表示了在排气系统中可电加热的蜂窝体1的内部结构。用于引入电流的导电结构2、3位于蜂窝体1内。有关导电结构可涉及至少局部具有某种结构的金属薄板。在例如wo92/02714中介绍了这种蜂窝体的设计。排气系统被外套4包围。外套4可以是一个整体式的环形壳体。外套4也可以由两个壳组成。外套4中制有通孔5,套管6插入此通孔中。套管6可与外套4在材料上连接起来,尤其是通过熔焊,或钎焊。由图可见,套管6部分地伸入蜂窝体1内。套管6也可以与外套4的内表面齐平地结束。
在套管6内装有两个互相同轴地布置的电导体7、8。导体7、8彼此电绝缘。电绝缘通过绝缘层9构成。绝缘层9可以是等离子喷镀的氧化铝(Al2O3)。在外面的管状导体8通过绝缘层10相对于套管6电绝缘。
设在中心的导体7伸入蜂窝体1内的端头与结构2连接。同样地,与设在中心的导体7同轴布置的导体8的端部与结构3连接。导体7、8与结构2、3的连接可通过熔焊或硬钎焊实现。
导体7、8从蜂窝体1伸出的端头设计成锥形。图中没有表示的相应的接头中有设计为与导体7、8锥形端相配的锥形插孔,从而可以在导体7和8与相应的同轴电缆之间建立可靠的电接触。为了固定连接电缆,在套管6上制有外螺纹11,锁紧螺母可以拧在外螺纹上。

Claims (10)

1.穿过内燃机排气系统尤其是可电加热的催化转化器的金属外套(4)的至少两个电导体(7、8)的电绝缘和气密式引线,其中,外套(4)在引线所在区有一个套管(6),导体(7、8)通过此套管延伸,其特征为:导体(7、8)互相同轴地导引。
2.按照权利要求1所述的引线,其特征为:导体(7、8)互相同心地导引。
3.按照权利要求1或2所述的引线,其特征为:每个导体(7、8)至少在套管的一端有一个从套管向外延伸的段,它局部电绝缘,其中,各个段的长度从里向外减小。
4.按照权利要求1或2所述的引线,其特征为:作为绝缘材料(9、10)是由MgO和/或Al2O3组成的压制的粉末混合物。
5.按照权利要求1或2所述的引线,其特征为:引线至少在其一端气密地封闭。
6.按照权利要求5所述的引线,其特征为:作为密封材料是玻璃。
7.按照权利要求5所述的引线,其特征为:作为密封材料是搪瓷。
8.按照权利要求1或2所述的引线,其特征为:作为绝缘材料(9、10)是等离子喷镀的Al2O3
9.按照权利要求1或2所述的引线,其特征为:作为绝缘材料(9、10)是陶瓷填料。
10.按照权利要求1或2所述的引线,其特征为:引线在排气系统温度较低的区域内延伸。
CN96194648A 1995-06-07 1996-04-25 电绝缘和气密式引线 Expired - Fee Related CN1086501C (zh)

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Application Number Priority Date Filing Date Title
DE19520758A DE19520758A1 (de) 1995-06-07 1995-06-07 Elektrisch isolierende gasdichte Durchführung
DE19520758.0 1995-06-07

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CN1187263A CN1187263A (zh) 1998-07-08
CN1086501C true CN1086501C (zh) 2002-06-19

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US (1) US5887427A (zh)
EP (1) EP0830695B1 (zh)
JP (1) JPH11507114A (zh)
KR (1) KR19990022209A (zh)
CN (1) CN1086501C (zh)
AU (1) AU5648096A (zh)
DE (2) DE19520758A1 (zh)
ES (1) ES2129964T3 (zh)
IN (1) IN188209B (zh)
MY (1) MY132195A (zh)
RU (1) RU2196368C2 (zh)
TW (1) TW300940B (zh)
WO (1) WO1996041353A1 (zh)

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DE102015111689C5 (de) * 2015-07-17 2022-09-01 Türk & Hillinger GmbH Elektrisch beheizbarer Katalysator und Verfahren zu dessen Herstellung
DE202015103787U1 (de) 2015-07-17 2015-08-06 Türk & Hillinger GmbH Gaskanal mit beheizter poröser Metallstruktur
DE102016209282B4 (de) 2016-05-30 2023-01-12 Vitesco Technologies GmbH Elektrischer Anschluss, insbesondere für einen elektrisch beheizbaren Wabenkörper
FR3091729B1 (fr) * 2019-01-10 2021-04-09 Faurecia Systemes Dechappement Dispositif de chauffage de gaz d’échappement, comportant une tige d’alimentation électrique perfectionnée
DE102019127686A1 (de) * 2019-10-15 2021-04-15 Türk & Hillinger GmbH Durchführung für eine elektrische Heizvorrichtung, elektrische Heizvorrichtung mit einer solchen Durchführung, System mit einer solchen Durchführung und Verfahren zur Herstellung einer solchen Durchführung
DE102019129795A1 (de) * 2019-11-05 2021-05-06 Eberspächer Exhaust Technology GmbH Abgasanlage für eine Brennkraftmaschine und Verfahren zur Herstellung einer Abgasanlage
JP7165714B2 (ja) * 2020-12-22 2022-11-04 チュルク ウント ヒリンガー ゲーエムベーハー 電気加熱装置のためのフィードスルー、そのようなフィードスルーを備える電気加熱装置、そのようなフィードスルーを備えるシステム、およびそのようなフィードスルーを製造するための方法
DE102021110048A1 (de) * 2021-04-21 2022-10-27 Schott Ag Durchführung durch ein Gehäusebauteil, insbesondere für raue, mechanisch und thermisch belastete Umgebungen
DE102021121835A1 (de) * 2021-08-24 2023-03-02 Purem GmbH Anschlusseinheit
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EP0830695B1 (de) 1999-03-10
WO1996041353A1 (de) 1996-12-19
AU5648096A (en) 1996-12-30
RU2196368C2 (ru) 2003-01-10
TW300940B (zh) 1997-03-21
ES2129964T3 (es) 1999-06-16
IN188209B (zh) 2002-08-31
JPH11507114A (ja) 1999-06-22
CN1187263A (zh) 1998-07-08
US5887427A (en) 1999-03-30
MY132195A (en) 2007-09-28
DE19520758A1 (de) 1996-12-12
DE59601427D1 (de) 1999-04-15
EP0830695A1 (de) 1998-03-25
KR19990022209A (ko) 1999-03-25

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