WO2005026534A1 - Bougie crayon de prechauffage munie d'un crayon de prechauffage sous forme de capteur de pression - Google Patents

Bougie crayon de prechauffage munie d'un crayon de prechauffage sous forme de capteur de pression Download PDF

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Publication number
WO2005026534A1
WO2005026534A1 PCT/DE2004/001687 DE2004001687W WO2005026534A1 WO 2005026534 A1 WO2005026534 A1 WO 2005026534A1 DE 2004001687 W DE2004001687 W DE 2004001687W WO 2005026534 A1 WO2005026534 A1 WO 2005026534A1
Authority
WO
WIPO (PCT)
Prior art keywords
glow
pencil
pressure
glow pencil
candle
Prior art date
Application number
PCT/DE2004/001687
Other languages
German (de)
English (en)
Inventor
Steffen Carbon
Volker Rothacker
Sigrid Wagner
Christoph Kern
Thomas Wolfangel
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
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to JP2006522884A priority Critical patent/JP2007501909A/ja
Priority to EP04762532A priority patent/EP1664526A1/fr
Publication of WO2005026534A1 publication Critical patent/WO2005026534A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
    • 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
    • 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

Definitions

  • Glow pin candle with glow pin designed as a pressure sensor
  • the invention relates to a glow plug for a fuel engine, consisting essentially of a candle housing and one arranged in the candle housing
  • the glow stick can e.g. be produced on the basis of organosilicon polymers and contain different proportions of one or more fillers.
  • glow pencil candles consist of a candle housing and a glow pin protruding from the candle housing made of ceramic material, which protrudes into the combustion chamber of a fuel engine in its assembled state.
  • the glow plugs of the glow plug candles protrude 4 mm into the combustion chamber of the fuel engine and warm up the diesel-air mixture.
  • the glow plug's afterglow temperature and afterglow time have a significant influence on the exhaust gas behavior and fuel consumption of the fuel engine.
  • Sensor-integrative concepts in which a pressure sensor is arranged on or in the glow plug, have the advantage over the previously known sensor concepts for measuring the pressure in the combustion chamber of a fuel engine that no additional borehole has to be provided in the fuel engine. This advantage increases all the more, since the space for attaching additional sensors is very limited in modern fuel engines.
  • WO-A 97 09567 proposes an additional pressure sensor in the glow plug which is interposed between a fixing member and a cylinder pressure-receiving member in a body of a glow plug.
  • the object of the invention is to further develop a glow plug so that pressure measurement in the combustion chamber of a fuel engine is possible in a simple manner.
  • the solution to the task is that the glow pencil has pressure-dependent electrical properties and can be used as a pressure sensor, the change in the properties of the glow pencil being detectable by pressure using a measuring device
  • One of the main advantages of the invention is that the properties of the components previously arranged in a ceramic glow plug are used. This can save additional components.
  • the geometry of the previous glow plugs is adhered to, which means that no new modifications to the fuel engines are necessary and that the previous glow plugs can be replaced in a very simple manner by the glow plug according to the invention with a pressure measuring device.
  • the properties of the glow pencil which change under pressure can be optimized in that the glow pencil contains appropriate fillers or proportions, for example MoSi 2 , CrSi 2 , MoC 2 , graphite, Fe, Si, SiC, A1 2 0 3 .
  • pressure-sensitive layers can also be applied to the glow pencil, which may be protected from the combustion chamber atmosphere by a further layer.
  • FIG. 1 is a schematic representation of the glow plug according to the invention, partly in section;
  • Figure 2 is a schematic representation of an electrical circuit of a measuring device for determining the pressure within the combustion chamber.
  • the invention relates to a ceramic glow pencil candle 1, as shown in FIG. 1. It consists of a candle housing 2 and a ceramic glow pencil 3.
  • the ceramic glow pencil 3 has an electrically conductive layer 4 and an electrically insulating layer 5.
  • the insulating and the conductive ceramic is produced on the basis of organosilicon polymers which contain different proportions of one or more fillers, such as MoSi 2 , CrSi 2 , MoC 2 , graphite, Fe, Si, SiC, A1 2 0 3 .
  • a connecting pin 6 is additionally provided, which is connected to the glow plug.
  • a contact element 7 can be provided for this purpose, which is embedded in a sleeve 10 and is electrically insulated from the candle housing.
  • the measuring device 11 consists of the resistor 12 of the glow plug 3 and a measuring device 14 (FIG. 2).
  • the evaluation electronics can be located partly in the housing of the glow plug, on the cylinder head or in the EDC.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne une bougie crayon de préchauffage pour moteur à combustion interne, qui comprend essentiellement un culot de bougie et un boulon d'assemblage disposé dans le culot de bougie, ainsi qu'un crayon de préchauffage pouvant être mis en contact avec le boulon d'assemblage. Ledit crayon d'assemblage (3) présente des propriétés électriques dépendant de la pression et peut s'utiliser comme capteur de pression. La déformation du crayon de préchauffage (3) sous l'effet de la pression peut être détectée par un dispositif de mesure (11).
PCT/DE2004/001687 2003-09-15 2004-07-28 Bougie crayon de prechauffage munie d'un crayon de prechauffage sous forme de capteur de pression WO2005026534A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006522884A JP2007501909A (ja) 2003-09-15 2004-07-28 圧力センサとして形成されたグローピンを有するシース形グロープラグ
EP04762532A EP1664526A1 (fr) 2003-09-15 2004-07-28 Bougie crayon de prechauffage munie d'un crayon de prechauffage sous forme de capteur de pression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342487.3 2003-09-15
DE2003142487 DE10342487A1 (de) 2003-09-15 2003-09-15 Glühstiftkerze mit als Drucksensor ausgebildetem Glühstift

Publications (1)

Publication Number Publication Date
WO2005026534A1 true WO2005026534A1 (fr) 2005-03-24

Family

ID=34258680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/001687 WO2005026534A1 (fr) 2003-09-15 2004-07-28 Bougie crayon de prechauffage munie d'un crayon de prechauffage sous forme de capteur de pression

Country Status (4)

Country Link
EP (1) EP1664526A1 (fr)
JP (1) JP2007501909A (fr)
DE (1) DE10342487A1 (fr)
WO (1) WO2005026534A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015078824A (ja) * 2013-10-18 2015-04-23 日本特殊陶業株式会社 グロープラグ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006018606B4 (de) * 2006-01-04 2008-05-08 Beru Ag Messglühkerze

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494401A (en) * 1982-11-26 1985-01-22 Robert Bosch Gmbh Pressure sensor for the combustion chamber of an internal combustion engine
US4549430A (en) * 1980-07-25 1985-10-29 Robert Bosch Gmbh Sensor
US4894635A (en) * 1987-05-27 1990-01-16 Ngk Insulators, Ltd. Strain sensor
WO1997009567A1 (fr) * 1995-09-05 1997-03-13 Unisia Jecs Corporation Detecteur de la pression interieure d'un cylindre de moteur diesel et son mode d'utilisation
WO2000033044A1 (fr) * 1998-11-27 2000-06-08 Commissariat A L'energie Atomique Capteur de pression a membrane comportant du carbure de silicium et procede de fabrication
EP1096141A2 (fr) * 1999-10-28 2001-05-02 Denso Corporation Bougie de préchauffage ayant un capteur de pression de combustion
US6465855B1 (en) * 1998-11-27 2002-10-15 Commissariat A L'energie Atomique Micromachined structure with a deformable membrane and method for making same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549430A (en) * 1980-07-25 1985-10-29 Robert Bosch Gmbh Sensor
US4494401A (en) * 1982-11-26 1985-01-22 Robert Bosch Gmbh Pressure sensor for the combustion chamber of an internal combustion engine
US4894635A (en) * 1987-05-27 1990-01-16 Ngk Insulators, Ltd. Strain sensor
WO1997009567A1 (fr) * 1995-09-05 1997-03-13 Unisia Jecs Corporation Detecteur de la pression interieure d'un cylindre de moteur diesel et son mode d'utilisation
WO2000033044A1 (fr) * 1998-11-27 2000-06-08 Commissariat A L'energie Atomique Capteur de pression a membrane comportant du carbure de silicium et procede de fabrication
US6465855B1 (en) * 1998-11-27 2002-10-15 Commissariat A L'energie Atomique Micromachined structure with a deformable membrane and method for making same
EP1096141A2 (fr) * 1999-10-28 2001-05-02 Denso Corporation Bougie de préchauffage ayant un capteur de pression de combustion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015078824A (ja) * 2013-10-18 2015-04-23 日本特殊陶業株式会社 グロープラグ

Also Published As

Publication number Publication date
EP1664526A1 (fr) 2006-06-07
JP2007501909A (ja) 2007-02-01
DE10342487A1 (de) 2005-04-07

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