DE102004044727A1 - Pressure-measuring glow plug for diesel engine, has heating rod arranged in plug body to slide in axial direction relative to plug body, where seal in form of bellows-shaped component is provided between heating rod and plug body - Google Patents
Pressure-measuring glow plug for diesel engine, has heating rod arranged in plug body to slide in axial direction relative to plug body, where seal in form of bellows-shaped component is provided between heating rod and plug body Download PDFInfo
- Publication number
- DE102004044727A1 DE102004044727A1 DE200410044727 DE102004044727A DE102004044727A1 DE 102004044727 A1 DE102004044727 A1 DE 102004044727A1 DE 200410044727 DE200410044727 DE 200410044727 DE 102004044727 A DE102004044727 A DE 102004044727A DE 102004044727 A1 DE102004044727 A1 DE 102004044727A1
- Authority
- DE
- Germany
- Prior art keywords
- plug body
- pressure
- bellows
- heating rod
- heating element
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/028—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs the glow plug being combined with or used as a sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
- F23Q2007/002—Glowing plugs for internal-combustion engines with sensing means
Abstract
Description
Die Erfindung betrifft eine Druckmessglühkerze für einen Dieselmotor nach Patentanspruch 1 der deutschen Patentanmeldung 103 43 521.2-23.The The invention relates to a Druckmessglühkerze for a diesel engine according to claim 1 of the German patent application 103 43 521.2-23.
Bei einer derartigen Druckmessglühkerze wird der Verbrennungsdruck direkt über den Heizstab auf den Drucksensor übertragen, ohne dass die Geometrie und die Festigkeit des Kerzenkörpers einen Einfluss haben oder eingebunden sind. Dabei werden alle üblichen Funktionen der Glühkerze beibehalten.at Such a Druckmessglühkerze is the combustion pressure directly over transfer the heating element to the pressure sensor without affecting the geometry and the strength of the candle body have an influence or are involved. Here are all the usual Functions of the glow plug maintained.
Vorzugsweise wird bei einer solchen Druckmessglühkerze eine Abdichtung zwischen dem Heizstab und dem Kerzenkörper vorgesehen, die aus einer Metallmembran oder aus einer Elastomerdichtung gebildet ist.Preferably is a seal between such a Meßmessglühkerze the heating element and the candle body provided, consisting of a metal diaphragm or an elastomeric seal is formed.
Eine Metallmembran als Dichtung hat jedoch den Nachteil einer steifen Federkennlinie und eines geringen Federweges, was zu einer Bauteilbelastung führt. Eine Elastomerdichtung ist andererseits temperaturempfindlich.A Metal membrane as a seal, however, has the disadvantage of a stiff Spring characteristic and a short spring travel, which leads to a component load. A Elastomeric gasket, on the other hand, is temperature sensitive.
Gemäß der vorliegenden Erfindung ist bei der Druckmessglühkerze der eingangs genannten Art zwischen dem Heizstab und dem Kerzenkörper eine Dichtung in Form eines faltenbalgartigen Bauteils vorgesehen.According to the present Invention is in the Druckmessglühkerze of the aforementioned type between the heating element and the plug body, a seal in the form a bellows-like component provided.
Eine faltenbalgartige Dichtung hat den Vorteil, dass eine absolute Dichtheit der Druckmessglühkerze im Bereich des Heizstabes zum Kerzenkörper gegenüber dem anliegenden Verbrennungsdruck gewährleistet ist.A Bellows-like seal has the advantage that an absolute tightness the pressure measuring glow plug in the region of the heating element to the plug body against the applied combustion pressure guaranteed is.
Durch die Anzahl und Form der Falten des faltenbalgartigen Bauteils kann darüber hinaus die Federlinie beeinflusst, das heißt in der gewünschten Weise gewählt werden.By the number and shape of the folds of the bellows-like component can about that In addition, the spring line influenced, that is in the desired manner chosen become.
Auf Grund des mehrlagigen Aufbaus des faltenbalgartigen Bauteils kann eine kleine Federrate und die geforderte Druckbelastung gewährleistet werden.On Reason for the multilayer construction of the bellows-like component can a small spring rate and the required pressure load can be guaranteed.
Ein weiterer Vorteil ist darin zu sehen, dass Einflüsse auf den Drucksensor infolge einer thermischen Belastung beim Glühbetrieb und bei den verschiedenen Motorlastzuständen minimal sind.One Another advantage is the fact that influences on the pressure sensor due a thermal load during annealing and at the various Engine load conditions are minimal.
Besonders bevorzugte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Druckmessglühkerze sind Gegenstand der Ansprüche 2 und 3.Especially preferred embodiments and further developments of Druckmessglühkerze invention are Subject of the claims 2 and 3.
Im Folgenden wird anhand der zugehörigen Zeichnungen ein besonders bevorzugtes Ausführungsbeispiel der Erfindung näher beschrieben. Es zeigenin the The following is based on the accompanying drawings a particularly preferred embodiment closer to the invention described. Show it
Wie
es in
Der
Heizstab
Wie
es in
Wie
es in
Bei
dem in den Figuren dargestelltem Ausführungsbeispiel besteht der
Kerzenkörper
Der
Faltenbalg
Wie
es in der Zeichnung dargestellt ist, besteht die Frontabdichtung
somit aus einem faltenbalgartigen Bauteil, das als Metallfaltenbalg
ausgebildet sein kann. Hierdurch ist die axiale Verschiebbarkeit des
Heizstabes
Die
in der Zeichnung dargestellte Druckmessglühkerze arbeitet in der folgenden
Weise:
Infolge des Verbrennungsdrucks oder des Kompressionsdrucks
des Kolbens wird der Heizstab
As a result of the combustion pressure or the compression pressure of the piston, the heating element
Der
Vorteil des Faltenbalgs
Durch die Ausbildung der Abdichtung in Form eines mehrlagigen Faltenbalgs wird eine kleine Federrate bei gleichzeitig ausreichender Druckbelastung erhalten. Das hat zur Folge, dass eine bessere Abdichtung gegenüber dem Verbrennungsdruck erzielt wird, dass auf Grund der kleinen Federkonstante eine Linearität im Messbereich gewährleistet ist und der Einfluss auf das Messsignal gering ist, dass die Spannungen infolge thermischer Einflüsse auf das Sensorelement gering sind, dass die Abdichtung thermisch unempfindlich ist und dass die eingesetzten Bauteile problemlos herstellbar sind.By the formation of the seal in the form of a multilayer bellows becomes a small spring rate with sufficient pressure load at the same time receive. As a result, a better seal against the Combustion pressure is achieved that due to the small spring constant a linearity guaranteed in the measuring range is and the influence on the measurement signal is low, that the voltages due to thermal influences on the sensor element are low, that the seal thermally is insensitive and that the components used easily can be produced.
Claims (3)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410044727 DE102004044727A1 (en) | 2003-09-19 | 2004-09-15 | Pressure-measuring glow plug for diesel engine, has heating rod arranged in plug body to slide in axial direction relative to plug body, where seal in form of bellows-shaped component is provided between heating rod and plug body |
EP05015804A EP1637806B1 (en) | 2004-09-15 | 2005-07-20 | Glow plug with pressure sensor for a diesel engine |
AT05015804T ATE544034T1 (en) | 2004-09-15 | 2005-07-20 | PRESSURE MEASUREMENT GLOW PLUG FOR A DIESEL ENGINE |
US11/224,088 US7228730B2 (en) | 2004-09-15 | 2005-09-13 | Pressure-measuring glow plug |
JP2005264597A JP5132046B2 (en) | 2004-09-15 | 2005-09-13 | Pressure measuring glow plug |
KR1020050085361A KR101229962B1 (en) | 2004-09-15 | 2005-09-13 | Pressure-measuring glow plug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10343521A DE10343521A1 (en) | 2003-09-19 | 2003-09-19 | Pressure measuring glow plug for a diesel engine |
DE200410044727 DE102004044727A1 (en) | 2003-09-19 | 2004-09-15 | Pressure-measuring glow plug for diesel engine, has heating rod arranged in plug body to slide in axial direction relative to plug body, where seal in form of bellows-shaped component is provided between heating rod and plug body |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004044727A1 true DE102004044727A1 (en) | 2006-03-16 |
Family
ID=35853622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410044727 Ceased DE102004044727A1 (en) | 2003-09-19 | 2004-09-15 | Pressure-measuring glow plug for diesel engine, has heating rod arranged in plug body to slide in axial direction relative to plug body, where seal in form of bellows-shaped component is provided between heating rod and plug body |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004044727A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1780468A2 (en) | 2005-10-28 | 2007-05-02 | Beru AG | Heating rod with pressure sensor in particular for a glow plug |
DE102006041124A1 (en) * | 2006-09-01 | 2008-03-27 | Beru Ag | Glow plug for diesel engine, has coil fixedly connected with connector at point that is spaced from heating rod, where coil is connected with glow plug body in region of connector if necessary |
DE102007044967A1 (en) * | 2007-09-19 | 2009-04-02 | Beru Ag | Glow plug with coking-optimized design, special annular gap formation |
WO2009100752A1 (en) * | 2008-02-13 | 2009-08-20 | Beru Aktiengesellschaft | Pressure measuring glow plug |
US7624620B2 (en) | 2006-06-20 | 2009-12-01 | Denso Corporation | Combustion pressure sensor |
WO2010066212A1 (en) * | 2008-11-27 | 2010-06-17 | Beru Ag | Glowing plug |
GB2489520A (en) * | 2011-03-31 | 2012-10-03 | Gm Global Tech Operations Inc | Pressure-measuring glow plug with seal |
CN104094062A (en) * | 2012-02-10 | 2014-10-08 | 罗伯特·博世有限公司 | Pressure measuring glow plug |
EP2799774A4 (en) * | 2011-12-26 | 2015-08-12 | Ngk Spark Plug Co | Ceramic glow plug equipped with pressure sensor |
DE102009056057B4 (en) * | 2008-11-27 | 2016-04-21 | Borgwarner Ludwigsburg Gmbh | Glow plug and method for its production |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4132842A1 (en) * | 1991-10-02 | 1993-04-08 | Beru Werk Ruprecht Gmbh Co A | Glow plug with sensor element enabling physical parameter measurement - has off-centre heating rod pressed into bore in plug body parallel to sensor element bore |
DE19737396A1 (en) * | 1996-09-12 | 1998-03-19 | Denso Corp | Glow-plug for diesel engine |
EP1096141A2 (en) * | 1999-10-28 | 2001-05-02 | Denso Corporation | Glow Plug having a combustion pressure sensor |
EP1134385A2 (en) * | 1999-12-24 | 2001-09-19 | Denso Corporation | Installation structure of engine component with combustion pressure sensor in engine |
DE10346295A1 (en) * | 2002-10-07 | 2004-04-22 | Denso Corp., Kariya | Glow plug with a combustion pressure sensor and structure and method for its installation |
-
2004
- 2004-09-15 DE DE200410044727 patent/DE102004044727A1/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4132842A1 (en) * | 1991-10-02 | 1993-04-08 | Beru Werk Ruprecht Gmbh Co A | Glow plug with sensor element enabling physical parameter measurement - has off-centre heating rod pressed into bore in plug body parallel to sensor element bore |
DE19737396A1 (en) * | 1996-09-12 | 1998-03-19 | Denso Corp | Glow-plug for diesel engine |
EP1096141A2 (en) * | 1999-10-28 | 2001-05-02 | Denso Corporation | Glow Plug having a combustion pressure sensor |
EP1134385A2 (en) * | 1999-12-24 | 2001-09-19 | Denso Corporation | Installation structure of engine component with combustion pressure sensor in engine |
DE10346295A1 (en) * | 2002-10-07 | 2004-04-22 | Denso Corp., Kariya | Glow plug with a combustion pressure sensor and structure and method for its installation |
Non-Patent Citations (2)
Title |
---|
Duden- Das große Wörterbuch der deutschen Sprache, Band 3, Bibliographisches Institut, Mannheim, 1977 , S. 1051 |
Duden- Das große Wörterbuch der deutschen Sprache,Band 3, Bibliographisches Institut, Mannheim, 1977, S. 1051 * |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005051817A1 (en) * | 2005-10-28 | 2007-05-03 | Beru Ag | Pressure measuring heating element, in particular for a Druckmessglühkerze |
DE102005051817B4 (en) * | 2005-10-28 | 2008-06-05 | Beru Ag | Pressure measuring glow device, in particular pressure measuring glow plug |
EP1780468A2 (en) | 2005-10-28 | 2007-05-02 | Beru AG | Heating rod with pressure sensor in particular for a glow plug |
US7829824B2 (en) | 2005-10-28 | 2010-11-09 | Beru Ag | Pressure pickup heating bar, in particular for a pressure pickup glow plug |
US7624620B2 (en) | 2006-06-20 | 2009-12-01 | Denso Corporation | Combustion pressure sensor |
DE102007000337B4 (en) * | 2006-06-20 | 2011-07-28 | DENSO CORPORATION, Aichi-pref. | Combustion pressure sensor |
DE102006041124A1 (en) * | 2006-09-01 | 2008-03-27 | Beru Ag | Glow plug for diesel engine, has coil fixedly connected with connector at point that is spaced from heating rod, where coil is connected with glow plug body in region of connector if necessary |
DE102006041124B4 (en) * | 2006-09-01 | 2008-06-26 | Beru Ag | Glow plug with built-in pressure sensor |
DE102007044967A1 (en) * | 2007-09-19 | 2009-04-02 | Beru Ag | Glow plug with coking-optimized design, special annular gap formation |
DE102008009441A1 (en) | 2008-02-13 | 2009-08-27 | Beru Ag | pressure measuring glow |
WO2009100752A1 (en) * | 2008-02-13 | 2009-08-20 | Beru Aktiengesellschaft | Pressure measuring glow plug |
DE102008009441B4 (en) * | 2008-02-13 | 2011-08-25 | Beru AG, 71636 | pressure measuring glow |
RU2485401C2 (en) * | 2008-02-13 | 2013-06-20 | БоргВарнер БЕРУ Системс ГмбХ | Ignition plug capable of pressure measurement |
WO2010066212A1 (en) * | 2008-11-27 | 2010-06-17 | Beru Ag | Glowing plug |
DE102009056057B4 (en) * | 2008-11-27 | 2016-04-21 | Borgwarner Ludwigsburg Gmbh | Glow plug and method for its production |
GB2489520A (en) * | 2011-03-31 | 2012-10-03 | Gm Global Tech Operations Inc | Pressure-measuring glow plug with seal |
GB2489520B (en) * | 2011-03-31 | 2016-08-31 | Gm Global Tech Operations Llc | Bellow seal for glow plug with integrated piezo sensor for pressure measurement |
EP2799774A4 (en) * | 2011-12-26 | 2015-08-12 | Ngk Spark Plug Co | Ceramic glow plug equipped with pressure sensor |
US9422913B2 (en) | 2011-12-26 | 2016-08-23 | Ngk Spark Plug Co., Ltd. | Ceramic glow plug equipped with pressure sensor |
CN104094062A (en) * | 2012-02-10 | 2014-10-08 | 罗伯特·博世有限公司 | Pressure measuring glow plug |
CN104094062B (en) * | 2012-02-10 | 2016-08-24 | 罗伯特·博世有限公司 | Pressure measxurement heater plug |
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Effective date: 20130810 |