EP1240462B1 - Glühstiftkerze - Google Patents

Glühstiftkerze Download PDF

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Publication number
EP1240462B1
EP1240462B1 EP00987092A EP00987092A EP1240462B1 EP 1240462 B1 EP1240462 B1 EP 1240462B1 EP 00987092 A EP00987092 A EP 00987092A EP 00987092 A EP00987092 A EP 00987092A EP 1240462 B1 EP1240462 B1 EP 1240462B1
Authority
EP
European Patent Office
Prior art keywords
glow plug
sheathed
temperature sensor
receiving part
integrated
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
Application number
EP00987092A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1240462A2 (de
Inventor
Christoph Haluschka
Juergen Arnold
Vera Wein
Rainer Bach
Klaus Hrastnik
Christoph Kern
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7932267&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1240462(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1240462A2 publication Critical patent/EP1240462A2/de
Application granted granted Critical
Publication of EP1240462B1 publication Critical patent/EP1240462B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a glow plug, in particular for starting a self-igniting internal combustion engine.
  • Shunt plugs of the generic type are known. To start a self-igniting internal combustion engine is an initial ignition of a fuel-air mixture required. These are glow plugs used in a wall of a combustion chamber are arranged. The glow plugs include a glow plug that is to be ignited Fuel-air mixture is brought into contact.
  • the glow plug made of an electrically conductive To manufacture ceramics.
  • the glow plug owns in this case a defined electrical resistance, so that when connecting the glow plug to a voltage source a heating current flows, which is for heating of the glow plug leads to a defined temperature.
  • This temperature is sufficient to ignite the fuel-air mixture.
  • the self-igniting Internal combustion engine it is desirable to know about one To have glow plug temperature.
  • flowing over the glow plug To measure heating current in order to derive a temperature of the glow plug it is known that the electrically conductive ceramics make up the glow plugs are made of a material with a positive temperature coefficient. The means, with increasing temperature the resistance increases, so that at constant Supply voltage of the heating current decreases. From this can over the time course of the heating current to the current temperature of the glow plug are closed.
  • the temperature distribution can vary greatly over the length of the glow plug at the same heating current.
  • the Temperature distribution for example, depends on a speed, a load condition and / or cooling the internal combustion engine. experimental Investigations have shown that temperature differences of up to 200 ° C may occur.
  • a glow plug with a glow plug which engages in a, an ignitable fuel-air mixture having combustion chamber.
  • the glow plug comprising an electrically conductive ceramic is by bonding with a voltage source aufloombar to an ignition temperature.
  • the glow plug has a Recording on, in which a temperature sensor is integrated. In this arrangement, the Temperature sensor completely attached to an outside of the glow plug. In order to takes place disadvantageously an impairment of the actual annealing function of the Glow plug.
  • the glow plug according to the invention with the features of each of the two independent claims 1, 2 offers the advantage that an immediate Temperature measurement can be done on a glow plug, without the actual Annealing function is impaired.
  • the integrated temperature sensor can be a current temperature of the glow plug both in active operation of the glow plug and in passive arrangement of the Determine the glow plug. In particular, this is an accuracy of Temperature determination independent of an operating state of the self-igniting Internal combustion engine achievable.
  • the glow plug has a On a longitudinal axis of the glow plug extending blind bore for receiving the Temperature sensor on. This ensures that the integration of the Temperature sensor in the glow plug in a particularly simple manner is possible. One additional space for the temperature sensor is not needed, because this quasi integrated inside the glow plug.
  • the receptacle for the temperature sensor at an angle to the longitudinal axis of the glow plug. This will Achieved that the temperature sensor over a partial length inside the glow plug is integrated.
  • the Temperature sensor receiving Hole of the glow plug at least partially a open-edged groove of the glow plug is.
  • the temperature sensor up to a outer circumferential wall of the glow plug to lead, so that a particularly accurate temperature measurement possible is because of the arrangement in the open-edged recess the consideration of a thermal contact resistance of the ceramic material of the glow plug is not required.
  • FIG. 1 shows a glow plug 10, which is to start a self-igniting internal combustion engine used is.
  • the glow plug 10 includes a Candle housing 12, which is substantially hollow cylindrical is trained.
  • the candle housing 12 takes a Glow plug 14 on.
  • the candle housing 12 is in one Wall of a cylinder housing, not shown sealing arranged, so that the glow plug 14 in the Combustion chamber protrudes.
  • the glow plug 14 is via a contact spring 16 with a contact pin 18th electrically connected.
  • the contact pin 18 is in a manner not shown with a Voltage source, in the motor vehicle of the motor vehicle battery, connectable, so over the contact pin 18 and a contact element, for example a Contact spring 16, the glow plug 14 with a voltage can be acted upon.
  • the glow plug 14 itself consists made of a ceramic, electrically conductive material.
  • the glow plug 10 includes further components, Of those still seals 20 respectively 22, a ceramic sleeve 24, a metal ring 26 as well a clamping element 28 are designated.
  • the glow plug 10 further includes an integrated Temperature sensor 30, which is essentially over the entire length of the glow plug 10 along a Longitudinal axis 32 extends.
  • the glow plug 14 When using the glow plug 10 as intended the glow plug 14 is subjected to the voltage U, so that it flows to a heating current I comes.
  • the height of the heating current I depends the electrical resistance R of the glow plug 14th This is designed so that this as a heating element (Glow element) acts. This can be provided that the distribution of electrical resistance R over the length of the glow plug 14 different is. In particular, is in the range of a glow tip 34 concentrates a higher electrical resistance R, so that there drops a higher voltage U and heating within the glow tip 34 is greater than in the remaining area of the glow plug 14th
  • temperature sensor 30 By integrated into the glow plug 10 temperature sensor 30 can now have a momentary temperature determined directly in the area of the glow pencil tip 34 become.
  • the temperature sensor 30 is shown schematically in FIG. 2 shown isolated.
  • the temperature sensor 30 is made for example, a combination of two electrically conductive materials that are one of the acting Temperature proportional voltage generated.
  • a temperature sensor 30 for example, an known platinum-platinum / rhodium thermocouple used.
  • This electrical conductor 36 is as Conductor loop within the temperature sensor 30th guided and via external terminals 38 with a Evaluation circuit connectable.
  • the temperature sensor 30 consists of an electrically non-conductive, temperature-resistant ceramic and includes the Recording the conductor loops one in particular not illustrated double capillary.
  • the temperature sensor 30 is guided by the connecting pin 18 insulating.
  • the connecting bolt 18 has an in Longitudinal extension of the glow plug running Bore 40. Since the temperature sensor 30 is above its outer circumference of electrically insulating ceramic is a short circuit to the terminal bolt 24 excluded.
  • the temperature sensor 30 led directly to the glow pencil tip 34.
  • the glow plug 14 itself usually consists of the electrically conductive ceramic, which is an insulating core 42 surrounds. This leads to the formation of the U-shaped Conductor loop from the electrically conductive ceramic material of the glow plug 14.
  • the temperature sensor 30 is now inside the insulating core 30 arranged or forms due to its outer electrically insulating properties itself the insulating core 42.
  • a distance of the temperature sensor 30 to electrically conductive region of the glow plug 14 is for example, 0.2 mm.
  • FIG. 3 shows the glow plug 14 in individual representation. It is clear that the glow plug 14 a on has the longitudinal axis 30 extending receptacle 44, in which the temperature sensor 30 can be introduced. The Recording 44 extends directly into the Glow tip 34. The receptacle 44 is formed by a blind bore 45.
  • the receptacle 44 is preferably in the green state of Ceramic introduced. This will cause material spalling or the like during insertion the recording 44 avoided.
  • FIG 4 shows a glow plug 10 in another Embodiment variant, wherein the same parts as in Figure 1 provided with the same reference numerals and not are explained again. In this respect, only on the existing differences. Other construction and function are identical.
  • the temperature sensor 30 here inside the glow plug 14 on a deviating from the longitudinal axis 32 Orientation is arranged.
  • the arrangement of the temperature sensor 30 is chosen so that with increasing Approaching the glow tip 34 of the radial distance to the longitudinal axis 32 increases until the Temperature sensor 30, the peripheral surface 46 of the glow plug 14 cuts.
  • Figures 5 to 8 is this in each case the glow plug 14 in two different Embodiments shown.
  • FIG. 5 shows a top view of the glow plug 14 - Seen in accordance with Figure 4 from the right - and Figure 6 a rotated by 90 ° to Figure 5 sectional view.
  • the receptacle 44 for receiving the Temperature sensor 30 first of a bore 47th is formed, beginning in the region of the longitudinal axis 32 initially at an angle ⁇ to the longitudinal axis 32nd runs.
  • the angle ⁇ is chosen so that related on the total length 1 of the glow plug 14, the bore 47 opens at about 1 ⁇ 2 on the lateral surface 46 and in an open-edged recess 48 passes.
  • a depth the open-edged recess 48 is here a Diameter of the temperature sensor 30 adjusted so that this radially not over the lateral surface 46 of the Glow pin 14 survives.
  • FIGS. 5 and 6 a further embodiment is shown, in which the receptacle 44 is formed by a radial slot 50 of the first up to the length of 1/2 exhibits a decreasing depth along the length 1 of heating pin 14 and then into the already in figure 6 opens open-edged recess 48 passes.
  • the slot 50 By forming the slot 50, it is possible to insert the temperature sensor 30 radially into the glow plug 14, while according to the embodiment in FIGS. 5 and 6, first has to be threaded into the bore 47 so that it can then be inserted into the open-edged recess 48 ,
  • Both the bore 47 according to the embodiment in Figures 5 and 6 and the groove 50 according to the Embodiment in Figures 7 and 8 as well both embodiments common edge open Recesses 48 are in a region of the glow plug 14 arranged, made of an insulating material consists.
  • the glow plug 14 is known to be off a layer structure, wherein an insulating ceramic in the U-shaped conductor loop of electric embedded in conductive ceramic.
  • a Impairment of the electrically conductive ceramic for example, the cross section of the electric conductive layer, avoided.
  • this glass ceramic is a thermal expansion behavior this glass ceramic, the ceramic material of the temperature sensor 30 and the insulation ceramic material of the glow plug 14 matched, so that when heating the entire layer composite in the given the same same thermal expansion behavior is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
EP00987092A 1999-12-11 2000-11-08 Glühstiftkerze Expired - Lifetime EP1240462B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19959766 1999-12-11
DE19959766A DE19959766A1 (de) 1999-12-11 1999-12-11 Glühstiftkerze
PCT/DE2000/003898 WO2001042715A2 (de) 1999-12-11 2000-11-08 Glühstiftkerze

Publications (2)

Publication Number Publication Date
EP1240462A2 EP1240462A2 (de) 2002-09-18
EP1240462B1 true EP1240462B1 (de) 2004-12-01

Family

ID=7932267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00987092A Expired - Lifetime EP1240462B1 (de) 1999-12-11 2000-11-08 Glühstiftkerze

Country Status (13)

Country Link
US (1) US6812432B1 (zh)
EP (1) EP1240462B1 (zh)
JP (1) JP2003527553A (zh)
KR (1) KR100671185B1 (zh)
AT (1) ATE284008T1 (zh)
CZ (1) CZ20021965A3 (zh)
DE (2) DE19959766A1 (zh)
ES (1) ES2232517T3 (zh)
HU (1) HU224475B1 (zh)
PL (1) PL195122B1 (zh)
SK (1) SK8242002A3 (zh)
TW (1) TW575723B (zh)
WO (1) WO2001042715A2 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002485A1 (de) * 2004-01-17 2005-08-11 Robert Bosch Gmbh Glühstiftkerze mit integrierter Temperaturerfassung
DE102005050435B4 (de) * 2005-10-19 2011-04-14 Man Diesel & Turbo Se Gasmotor und Zündeinrichtung für einen Gasmotor
DE102006052634A1 (de) * 2006-11-08 2008-05-15 Robert Bosch Gmbh Kraftstoffheizer
US20080216828A1 (en) 2007-03-09 2008-09-11 Alexza Pharmaceuticals, Inc. Heating unit for use in a drug delivery device
KR101444950B1 (ko) * 2008-06-12 2014-09-26 현대자동차주식회사 실린더 헤드 구조
US20100065052A1 (en) * 2008-09-16 2010-03-18 Alexza Pharmaceuticals, Inc. Heating Units
DE102009028952A1 (de) * 2009-08-27 2011-03-03 Robert Bosch Gmbh Glühkerze mit integriertem Temperaturfühler
US20120048963A1 (en) 2010-08-26 2012-03-01 Alexza Pharmaceuticals, Inc. Heat Units Using a Solid Fuel Capable of Undergoing an Exothermic Metal Oxidation-Reduction Reaction Propagated without an Igniter
JP5660612B2 (ja) 2011-01-12 2015-01-28 ボッシュ株式会社 グロープラグ先端温度推定方法及びグロープラグ駆動制御装置
EP4272744A3 (en) 2015-03-11 2024-01-24 Alexza Pharmaceuticals, Inc. Use of antistatic materials in the airway for thermal aerosol condensation process
ITUB20152625A1 (it) * 2015-07-30 2017-01-30 Irca Spa Resistenza corazzata e relativo processo di produzione

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890485A (en) * 1974-03-29 1975-06-17 Emerson Electric Co Electric heaters
US4437440A (en) * 1979-06-20 1984-03-20 Ngk Spark Plug Co., Ltd. Auxiliary combustion chamber preheating device
JPS5968569A (ja) * 1982-10-14 1984-04-18 Nissan Motor Co Ltd デイ−ゼルエンジンの予熱制御装置
DE9112242U1 (de) * 1991-10-01 1991-11-28 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Temperaturmeßglühkerze
DE9112300U1 (de) * 1991-10-02 1991-11-28 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Glühkerze mit Sensorelement
JP3306427B2 (ja) * 1997-11-21 2002-07-24 いすゞ自動車株式会社 シース構造体
JP2001336468A (ja) * 2000-03-22 2001-12-07 Ngk Spark Plug Co Ltd グロープラグ制御装置、グロープラグ、及びエンジンの燃焼室内のイオン検出方法
US6486442B2 (en) * 2000-10-12 2002-11-26 Hotset Corporation Heating device with electric heating element and thermocouple

Also Published As

Publication number Publication date
CZ20021965A3 (cs) 2003-02-12
PL355568A1 (en) 2004-05-04
SK8242002A3 (en) 2003-03-04
EP1240462A2 (de) 2002-09-18
PL195122B1 (pl) 2007-08-31
ATE284008T1 (de) 2004-12-15
WO2001042715A3 (de) 2001-10-25
ES2232517T3 (es) 2005-06-01
HUP0203467A2 (en) 2003-02-28
KR100671185B1 (ko) 2007-01-19
DE19959766A1 (de) 2001-06-13
KR20020062964A (ko) 2002-07-31
US6812432B1 (en) 2004-11-02
WO2001042715A2 (de) 2001-06-14
JP2003527553A (ja) 2003-09-16
DE50008870D1 (de) 2005-01-05
TW575723B (en) 2004-02-11
HU224475B1 (hu) 2005-09-28

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