WO2006108738A2 - Bougie crayon de prechauffage a element manometrique integre - Google Patents

Bougie crayon de prechauffage a element manometrique integre Download PDF

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Publication number
WO2006108738A2
WO2006108738A2 PCT/EP2006/060421 EP2006060421W WO2006108738A2 WO 2006108738 A2 WO2006108738 A2 WO 2006108738A2 EP 2006060421 W EP2006060421 W EP 2006060421W WO 2006108738 A2 WO2006108738 A2 WO 2006108738A2
Authority
WO
WIPO (PCT)
Prior art keywords
force
module
glow plug
measuring element
pressure measuring
Prior art date
Application number
PCT/EP2006/060421
Other languages
German (de)
English (en)
Other versions
WO2006108738A3 (fr
Inventor
Christoph Kern
Steffen Schott
Pavlo Saltikov
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 EP06708619A priority Critical patent/EP1872057A2/fr
Priority to JP2008505851A priority patent/JP2008537046A/ja
Priority to US11/918,381 priority patent/US20100032423A1/en
Publication of WO2006108738A2 publication Critical patent/WO2006108738A2/fr
Publication of WO2006108738A3 publication Critical patent/WO2006108738A3/fr

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
    • 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
    • G01L23/08—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 operated electrically
    • G01L23/10—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 operated electrically by pressure-sensitive members of the piezoelectric type
    • 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
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49083—Heater type

Definitions

  • the invention relates to a glow plug with integrated pressure measuring element and a method for producing such a glow plug.
  • the invention relates to a glow plug, which in addition to a radiator and a plug housing has a pressure measuring module with at least one force measuring element.
  • a combustion optimization in the combustion chamber of a diesel engine can be achieved in particular by the use of a regulated injection of fuel.
  • this controlled injection can be controlled by electronic engine control devices which have already been established in modern motor vehicles.
  • CSC combustion chamber pressure signal-based engine control
  • measuring devices are widely used, which have so-called “stand-alone” sensors, for which a separate hole in the cylinder head wall has to be provided, which means an additional installation effort. which poses considerable problems especially with four-valve engines of today's design due to the very tight space conditions Price of such systems is comparatively high, and the life of such systems, mostly due to the high operating temperatures, significantly shorter than a typical vehicle life.
  • spark plugs with integrated piezoelectric force measuring element which are known for example from DE 694 05 788 T2.
  • This document discloses a spark plug with built-in pressure sensor, wherein the pressure sensor has at least one pressure introduction channel, which connects the combustion chamber of an associated cylinder of the internal combustion engine with the pressure sensor.
  • the device comprises a pressure sensor, a heating section of a glow plug, which is received in the interior of a cylinder of the diesel engine and can be acted upon by the cylinder pressure and a fixing member for fixing the heating section in a body of the glow plug.
  • the pressure sensor is arranged between the heating section and the fixing member of the glow plug. The cylinder pressure is transferred to the pressure sensor via the heating section.
  • the device disclosed in DE 196 80 912 C2 has the particular disadvantage that the pressure sensor is directly connected to the heating section and is thus exposed to high temperature loads and temperature fluctuations. Furthermore, an assembly of the device described in DE 196 80 912 C2 is complicated, since first the heating section must be introduced into the body of the glow plug, after which the pressure sensor must be positioned centrally on the heating section to ensure proper functionality of the device. Subsequently, the pressure sensor on the side facing away from the cylinder of the device must be fixed by means of the fixing device, which in turn involves the risk of misplacement of the pressure sensor. Testing the functionality of the pressure sensor is possible only in the fully assembled state of the glow plug. From DE 102 18 544 Al a glow plug with built-in combustion pressure sensor is known.
  • the glow plug includes a housing having a combustion pressure sensor concentrically disposed about a core and biased by the core.
  • the combustion pressure in an engine is transmitted through the core as force, thereby reducing the force exerted on the core by the pressure sensor on the pressure sensor.
  • the combustion pressure is thus converted into a reduction of a preload on the pressure sensor and can thus be detected by means of an electrical signal of the pressure sensor.
  • DE 102 18 544 has the disadvantage of a high number of parts. Furthermore, the connection between the core and the concentrically arranged around this core pressure sensor during assembly can cause difficulties, since it can lead to tension between the core and the pressure sensor. Component tolerances can be critical here. Furthermore, the structure shown in DE 102 18 544 Al is testable only in the fully assembled state, so that only after a complete assembly any errors can be detected.
  • a basic idea of the invention is to assemble the glow plug of two separate modules.
  • the glow plug has a radiator and a plug housing, which are components of a first module of the glow plug. Furthermore, the glow plug has a pressure measuring module which adjoins the plug housing on a side facing away from the radiator. In the pressure measuring module, at least one force measuring element is integrated, which can generate an electrical signal in response to a force.
  • the pressure measuring module is connected to the first module in such a way that the at least one force-measuring element is connected directly or indirectly to the heating element, such that a force can be transmitted to the at least one force-measuring element via the heating element.
  • a force measuring element can be used a variety of known in the art components. Piezoelectric, piezoresistive, capacitive, inductive force measuring elements and / or measuring elements with strain gauges (DMS) can be used particularly advantageously. deploy. In principle, however, other mechanical-electrical transducer elements can be used.
  • DMS strain gauges
  • the glow plug according to the invention offers a number of advantages over the devices known from the prior art.
  • the use of a separate pressure measuring module and the modular structure causes the outer dimensions of the at least one force measuring element is no longer limited by the internal space of the plug housing.
  • a larger selection of force measuring elements is commercially available, whereby costs of production can be reduced and delivery bottlenecks can be avoided.
  • force measuring elements which have a higher precision, lower temperature dependence and other advantageous properties, but which would not be integrated due to the low available space in conventional, known from the prior art glow plugs.
  • the modular design of the glow plug ensures that during construction and assembly a high customer independence is ensured, so that, for example, one and the same type of glow plug can be integrated into different engine types. For example, a simple replacement of the pressure measuring module is sufficient for this purpose.
  • the first module and the pressure measuring module can be manufactured in separate steps, for example by separate manufacturers or in different production plants.
  • the radiator is connected to the plug housing.
  • the pressure measuring module at least one force measuring element is integrated into the pressure measuring module.
  • both modules can be tested separately, since the functionality of the two modules is independent of the other module.
  • the pressure measuring module and the first module are connected to one another, such that a force can be transmitted to the at least one force measuring element via the heating element.
  • This connection can in particular be cohesively, for example by welding, and / or by a frictional connection.
  • At least one force transmission element For transmitting the force from the radiator to the at least one force measuring element, in particular at least one force transmission element can be used.
  • the at least one power transmission element may have a power transmission ram.
  • This additional at least one force transmission element has the particular advantage that the radiator and the at least one force measuring element can be spatially separated from each other.
  • the pressure measuring module can be arranged outside the combustion chamber of the internal combustion engine, so that the at least one force measuring element is exposed to the lowest possible temperature loads and temperature fluctuations. Since the signal characteristics of many commercially available force measuring elements depend significantly on the operating temperature and / or temperature fluctuations, this construction according to the invention is thus of considerable advantage for the signal quality.
  • the at least one force-measuring element has at least one actuator surface extending perpendicularly to an axis of the glow plug.
  • the at least one force-measuring element can, for example, have the shape of a disk, for example a circular disk, and can be fixed radially to a housing of the pressure-measuring module.
  • a force can be exerted directly or indirectly on the at least one actuator surface via the at least one force transmission element in the axial direction.
  • the glow plug additionally comprise at least one diaphragm, which is arranged between the at least one force transmission element and the at least one force-measuring element.
  • this membrane can be an integral part of the at least one force-measuring element.
  • the glow plug additionally has a vibration damping element.
  • this vibration damping element can completely or partially fill at least one cavity between the at least one force transmission element and the plug housing.
  • elongated power transmission elements such as a power transfer tappet
  • the first module and the pressure measuring module can in particular be separated from one another by an interface, for example a partition wall.
  • the at least one partition wall has at least one Kraftübertragungsöfrhung.
  • this power transmission opening may be a central bore through which a power transmission ram is guided in the axial direction.
  • Figure 1 shows an exemplary embodiment of a glow plug according to the invention.
  • Figure 2 shows an exemplary embodiment of a method according to the invention for
  • FIG. 1 shows an embodiment of a glow plug 110 according to the invention.
  • the glow plug 110 has a first module 112 (glow plug module) and a pressure measuring module 114. Both modules are separated along an interface by a partition wall 116, which may be part of the pressure measuring module 114 or the Glühstattmoduls 112. Also, two partitions 116 are possible, wherein z. B. a partition wall part of the Glühmannmoduls 112 and a partition wall is part of the pressure measuring module 114.
  • the connection between pressure measuring module 114 and Glühstattmodul 112 can be done for example by welding. A screw connection through appropriate union nuts is conceivable.
  • the glow plug module 112 has a housing 118 with a substantially cylindrical inner space 120.
  • the housing 118 On a side facing away from the pressure module 114, a combustion chamber of the internal combustion engine facing the end of the housing 118, the housing 118 has a sealing cone 122, in which a (ceramic in this embodiment) radiator 124 is inserted.
  • the ceramic heating element 124 in the sealing cone 122 is connected to the housing 118 in such a way, for example by gluing, that the inner space 120 is sealed substantially against the influences of the combustion chamber.
  • the ceramic heater 124 can also be soldered into a metallic support tube, which is then welded to the housing or can be pressed into this.
  • the ceramic heater 124 has at its front, the combustion chamber end facing a pressure surface 126, which is configured in this embodiment as a surface perpendicular to an axis 128 of the glow plug 110.
  • the pressure in the combustion chamber of the internal combustion engine causes a force F (reference numeral 130) on the ceramic heater (which, mutatis mutandis, also be a metallic radiator can) be exercised.
  • F reference numeral 130
  • This force causes a linear-elastic deflection of the components located in the power path of the glow plug 110. This deflection is usually in the micrometer range. By means of this linear-elastic deflection, a force can be transmitted to the glow plug 110 which correlates directly with the combustion chamber pressure.
  • a force-measuring element 132 is arranged in the pressure measuring module 114.
  • the force measuring element 132 essentially has the shape of a circular disk arranged perpendicular to the axis 128 and has an end face 134 with an integrated, miniaturized membrane which is arranged on the side facing the heating body 124.
  • the force-measuring element which may be a piezoresistive force-measuring element, as described above, has two signal lines 138, which leads axially out of a housing 140 at the end of the pressure measuring module 114 facing away from the glow plug module 112 and a corresponding signal processing (not shown).
  • a force is exerted on the force-measuring element 132, it is converted by the force-measuring element 132 into corresponding electrical signals, for example a voltage or a current, which can be tapped off by means of the signal lines 138.
  • the force measuring element 132 is peripherally connected in this embodiment with the housing 140, for example by gluing or by a corresponding thread. Additionally or alternatively, the force-measuring element 132 can also be supported by the side facing away from the heating element 124, for example, characterized in that the housing 140 has an internal thread into which, for example, a corresponding ring with an external thread can be screwed.
  • the inventive design also differs significantly from the arrangement shown in EP 102 18 544 Al.
  • a separate production of the two modules 112, 114 is possible. It is also possible to produce different variants of the glow plug module 112 and of the pressure measurement module 114, the geometries of which are adapted to specific customer requirements.
  • the interface geometry which allows an assembly of the two modules 112, 114 along the partition wall 116, be type-independent, so that there is a "kit" of Glühstattmodulen 112 and pressure measuring modules 140.
  • the length of the force transmission element 142 ie in particular the fact that the force transmission element 142 has a length which considerably exceeds its diameter, vibration modes in the excitation spectrum for mechanical vibrations can occur in the mostly undesired low-frequency range. By such natural resonances, the evaluation of the signals of the force measuring element 132 is difficult, or completely prevented.
  • a vibration damping element 146 is provided according to the invention in accordance with FIG. 1.
  • This Schwingungsdämpfungs- element 146 is advantageously designed as a cylinder sleeve in this Ausrrittungsbeispiel, in which a cylindrical power transmission plunger 142 is used as a power transmission element and fills an annular gap between the power transmission plunger 142 and the housing 118 of the Glühmannmoduls 112 completely.
  • the vibration damping element 146 may comprise a resin, in particular an electrically and / or thermally insulating resin.
  • This resin can be filled in a liquid state in the annular gap between the power ram 142 and the housing 118 of the Glühmannmoduls 112 and then cured there.
  • a resin but also a variety of other materials can be used, which can be introduced in the liquid or plastic state in the annular gap, and then cured there.
  • the curing can be wholly or partially, so that, for example, an elastic or a plastic vibration damping element 146 results.
  • the curing can take place in various ways, for example by UV action or by heat treatment. Numerous other possibilities are conceivable and known to the person skilled in the art.
  • the steel connection bolt normally used for glow current leads to the ceramic heater 124 is replaced by a thin and / or flexible wire glow current lead 148 118 of the glow plug module 112 is optimally utilized.
  • This Drahtglühstromzutechnisch 148 can be led out of the housing 118 of the Glühwmoduls 112 via a radial bore 150 and fed to a corresponding power supply.
  • FIG. 2 shows an exemplary embodiment of a method according to the invention for producing a glow plug 110, for example, the glow plug 110 shown in FIG. shown.
  • the illustrated method steps do not necessarily have to be carried out in the illustrated sequence, and additional method steps not shown in FIG. 2 can be performed. Individual process steps can also be carried out repeatedly.
  • a first module 112 is produced which has a heating body 124 and a housing 118.
  • the radiator 124 is connected to the plug housing 118.
  • this first module 112 is tested, wherein, for example, the functionality of the heating element 124 is checked by applying a corresponding current, for example via the wire-filament feed line 148.
  • a pressure measuring module 114 for example according to the exemplary embodiment according to FIG. 1, is mounted, wherein in particular at least one force measuring element 132, for example 132 of the type described above, is integrated into the pressure measuring module 114.
  • the pressure measuring module 114 is tested. This testing can be carried out, for example, by applying a defined force to the diaphragm 136 of the force measuring module 132 via the opening 144 in the dividing wall 116, wherein the electrical signal generated by the force measuring element 132 can be detected on the signal lines 138, for example , In particular, malfunctions of the pressure measuring module 114 can be detected in this way.
  • the pressure measurement module 114 and the glow plug module 112 are connected to one another, for example by welding or by bonding by means of a union nut.
  • This connection is made such that a force from the heater 124 is transferable to the force measuring element 132.
  • a connection of the power transmission plunger 142 is guided through the central bore 144 in the interior of the pressure measuring module 114 and placed on the diaphragm 136.
  • the power 130 from the heating element 124 is completely or partially transmitted by means of a power transmission element 142, which in this embodiment is designed as a power transmission plunger 142.
  • This power transfer ram 142 transmits the force 130 axially to the end surface 134 of the force-sensing element 132.
  • the power transmission ram 142 is guided through a central bore 144.

Abstract

Selon l'invention, notamment pour assurer une régulation de moteur fondée sur le signal de pression de la chambre de combustion, il est nécessaire d'avoir une solution fiable et simultanément économique pour détecter une pression de chambre de combustion dans des moteurs à combustion interne à auto-allumage. A cet effet, il est prévu une bougie crayon de préchauffage (110), qui présente un module de bougie crayon (112) et un module manométrique (114) relié au module de bougie crayon (112). Le module de bougie crayon (112) présente un corps chauffant (124) et un culot de bougie (118). Le module manométrique (114) présente au moins un élément dynamométrique (132), qui est intégré dans le module manométrique (114). L'élément dynamométrique (132) (au moins au nombre de un) est conçu de manière à produire un signal électrique en fonction d'une force (130). A cet effet, l'élément dynamométrique (132) (au moins au nombre de un) est relié au corps chauffant (124), à l'état monté, de manière qu'une force (130) puisse être transmise à l'élément dynamométrique (132) (au moins au nombre de un), par l'intermédiaire du corps chauffant (124).
PCT/EP2006/060421 2005-04-11 2006-03-03 Bougie crayon de prechauffage a element manometrique integre WO2006108738A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06708619A EP1872057A2 (fr) 2005-04-11 2006-03-03 Bougie crayon de prechauffage a element manometrique integre
JP2008505851A JP2008537046A (ja) 2005-04-11 2006-03-03 圧力測定エレメントを組み込まれたシース形グロープラグ
US11/918,381 US20100032423A1 (en) 2005-04-11 2006-03-03 Sheathed Element Glow Plug Having an Integrated Pressure Measuring Element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005016463A DE102005016463A1 (de) 2005-04-11 2005-04-11 Glühstiftkerze mit integriertem Druckmesselement
DE102005016463.3 2005-04-11

Publications (2)

Publication Number Publication Date
WO2006108738A2 true WO2006108738A2 (fr) 2006-10-19
WO2006108738A3 WO2006108738A3 (fr) 2006-12-14

Family

ID=36940501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/060421 WO2006108738A2 (fr) 2005-04-11 2006-03-03 Bougie crayon de prechauffage a element manometrique integre

Country Status (5)

Country Link
US (1) US20100032423A1 (fr)
EP (1) EP1872057A2 (fr)
JP (1) JP2008537046A (fr)
DE (1) DE102005016463A1 (fr)
WO (1) WO2006108738A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008009441B4 (de) * 2008-02-13 2011-08-25 Beru AG, 71636 Druckmessglühkerze
DE102008020510B4 (de) 2008-04-23 2010-02-11 Beru Ag Vorrichtung und Verfahren zur Ermittlung des Brennraumdruckes
DE102008020509B4 (de) * 2008-04-23 2010-02-25 Beru Ag Verfahren zur Herstellung einer Vorrichtung zur Ermittlung des Brennraumdrucks und eine solche Vorrichtung
DE102009037375B3 (de) * 2009-08-12 2011-03-03 Beru Ag Glühkerze
DE102012202063A1 (de) * 2012-02-10 2013-08-14 Robert Bosch Gmbh Druckmesseinrichtung für einen Brennraumdrucksensor
DE102012209237A1 (de) * 2012-05-31 2013-12-05 Robert Bosch Gmbh Druckmessglühkerze
CN105482045A (zh) * 2015-12-14 2016-04-13 北方华锦化学工业集团有限公司 一种耐热本体abs树脂的制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE656168C (de) * 1932-04-16 1938-01-31 Loewe Opta Gmbh Zuendkerze mit eingebauter piezoelektrischer Druckmesseinrichtung
DE10346296A1 (de) * 2002-10-07 2004-04-22 Denso Corp., Kariya Glühkerze mit Verbrennungsdrucksensor
EP1517086A1 (fr) * 2003-09-19 2005-03-23 Beru AG Bougie d'allumage avec un capteur de pression pour un moteur Diesel
DE10346330A1 (de) * 2003-10-06 2005-05-04 Beru Ag Druckmessglühkerze für einen Dieselmotor
EP1598651A2 (fr) * 2004-05-17 2005-11-23 Beru AG Bougie de préchauffage avec capteur de pression
DE102004043874A1 (de) * 2004-09-10 2006-03-16 Robert Bosch Gmbh Vorrichtung zur Erfassung des Drucks in einem Brennraum einer Verbrennungskraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3177819B2 (ja) * 1995-09-05 2001-06-18 株式会社ユニシアジェックス 内燃機関の筒内圧力検出装置
FR2849911B1 (fr) * 2003-01-14 2005-03-04 Siemens Vdo Automotive Bougie pour moteur a combustion interne equipee d'un capteur de pression de chambre de combustion
JP2004278934A (ja) * 2003-03-17 2004-10-07 Ngk Spark Plug Co Ltd 燃焼圧検知機能付きグロープラグ
DE10344080B3 (de) * 2003-09-23 2005-02-10 Beru Ag Druckmessstecker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE656168C (de) * 1932-04-16 1938-01-31 Loewe Opta Gmbh Zuendkerze mit eingebauter piezoelektrischer Druckmesseinrichtung
DE10346296A1 (de) * 2002-10-07 2004-04-22 Denso Corp., Kariya Glühkerze mit Verbrennungsdrucksensor
EP1517086A1 (fr) * 2003-09-19 2005-03-23 Beru AG Bougie d'allumage avec un capteur de pression pour un moteur Diesel
DE10346330A1 (de) * 2003-10-06 2005-05-04 Beru Ag Druckmessglühkerze für einen Dieselmotor
EP1598651A2 (fr) * 2004-05-17 2005-11-23 Beru AG Bougie de préchauffage avec capteur de pression
DE102004043874A1 (de) * 2004-09-10 2006-03-16 Robert Bosch Gmbh Vorrichtung zur Erfassung des Drucks in einem Brennraum einer Verbrennungskraftmaschine

Also Published As

Publication number Publication date
EP1872057A2 (fr) 2008-01-02
WO2006108738A3 (fr) 2006-12-14
US20100032423A1 (en) 2010-02-11
DE102005016463A1 (de) 2006-10-12
JP2008537046A (ja) 2008-09-11

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