EP3033605A1 - Module capteur pour une bougie-crayon de préchauffage à mesure de pression - Google Patents

Module capteur pour une bougie-crayon de préchauffage à mesure de pression

Info

Publication number
EP3033605A1
EP3033605A1 EP14739477.9A EP14739477A EP3033605A1 EP 3033605 A1 EP3033605 A1 EP 3033605A1 EP 14739477 A EP14739477 A EP 14739477A EP 3033605 A1 EP3033605 A1 EP 3033605A1
Authority
EP
European Patent Office
Prior art keywords
sensor module
insulating body
transducer element
sensor
housing
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.)
Withdrawn
Application number
EP14739477.9A
Other languages
German (de)
English (en)
Inventor
Holger Scholzen
Juergen Krueger
Anke MAIER-SCHLEICH
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3033605A1 publication Critical patent/EP3033605A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/08—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of piezoelectric devices, i.e. electric circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/08—Testing internal-combustion engines by monitoring pressure in cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • 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
    • F23Q2007/004—Manufacturing or assembling methods
    • F23Q2007/005—Manufacturing or assembling methods pressure sensors

Definitions

  • the invention relates to a sensor module for a Druckmessglühkerze or
  • the invention relates to a pressure measuring glow plug with such a
  • Sensor module or alternatively a stand-alone combustion chamber pressure sensor with such a sensor module.
  • Combustion chamber pressure identified that plays a crucial role in achieving optimal combustion in the combustion chamber of self-igniting internal combustion engines or in a gasoline process. In order to be able to measure this, must
  • Combustion chamber pressure sensors are provided in the combustion chamber of the internal combustion engine.
  • At least one electrically heatable glow plug also called GLP (by the English term “glow plug"), by means of which the diesel engine is preheated in the starting phase, is already present in each of the combustion chambers of known diesel engines as a cold-start aid Glow plugs can be a heating element made of metal or ceramic
  • GLP by the English term "glow plug”
  • glow plugs are also widely used in glow starter engines or as cold start assistants for starting kerosene-powered gas turbines and oil heaters
  • solutions have been proposed in the past in which the combustion chamber pressure sensor enters the glow plug
  • An example of such a so-called pressure measuring glow plug can be found in DE 10 201 1088474 A1, in which in a glow module of the pressure measuring glow plug a combustion chamber pressure of one in a cylindrical transmission element
  • the pressure sensor is fixed with a fixed counter bearing in the Glühmodulgephaseuse.
  • a contacting of the glow tube takes place via a connecting bolt and an associated electrical line which passes through a central bore in the pressure sensor and the pressure piece.
  • a sensor module of a Druckmessglühkerze with the features of claim 1 is proposed, preferably for a self-igniting internal combustion engine or a spark-ignition internal combustion engine. More precisely, the sensor module according to the invention thereby inter alia
  • the piezoelectric transducer element and at least one insulating body, which is also arranged in the sensor housing, adjacent to the transducer element.
  • the insulating body is provided, as a heat protection insulation, the transducer element from high
  • the insulating body may in particular consist of a ceramic material, preferably of aluminum oxide (Al 2 0 3 ). To a contacting of the transducer element, so an electrical connection with the
  • piezoelectric transducer element for measuring on the transducer element
  • At least one recess is provided in the insulating body on the outer circumference, in which the electrical contact of the
  • Transducer element extends, preferably in the form of one or more cables, with which the transducer element is contacted.
  • a piezoelectric transducer element is generally to be understood as an element which can convert mechanical effects, for example a force effect which causes a change in length of the transducer element, into electrical signals.
  • the transducer element is here preferably a piezoceramic or a quartz material such as silicon dioxide (Si0 2 ). Alternatively or additionally, however, the piezoelectric transducer element can also be other types of mechanical-electrical
  • transducer elements adapted to convert mechanical to electrical signals. Since, in the context of the present invention, a supply line to a pressure sensor, for example a glow plug of a pressure-measuring glow plug, can be guided laterally past the sensor module, in particular on the piezoelectric transducer element, due to the at least one recess, the transducer element can in particular be configured over the entire surface, for example as a full-surface cuboid element without central opening, or alternatively as a disk with polygonal cross-section or the like.
  • a supply line to a pressure sensor for example a glow plug of a pressure-measuring glow plug
  • the transducer element can in particular be configured over the entire surface, for example as a full-surface cuboid element without central opening, or alternatively as a disk with polygonal cross-section or the like.
  • a force transmission between the pressure transducer and the transducer element is preferably implemented by further comprising at least one transmission element between a receiving component of the glow plug and the piezoelectric transducer element is arranged for transmitting force from the receiving member to the transducer element, for example in the form of a further insulating body.
  • Such a force transmission can basically include the transfer of forces, pressures, movements or similar mechanical state changes caused by the combustion chamber pressure.
  • the transmission element may be designed in particular rod-shaped or annular.
  • a piezoelectric transducer element By passing the supply line to the pressure transducer by means of the at least one recess, a piezoelectric transducer element can be used, the production of which is far less expensive than the production of a circular transducer element with a central bore, for example. Furthermore, with the
  • the insulating body has a substantially square shape with a recess on each side. This results in a symmetrical shape of the insulating body, with the advantage that a corresponding production of the insulating body is achieved and accidental incorrect installation of the insulating can be prevented in the sensor module, since each side of the square shape of the insulating body is the same.
  • Such a design of the insulating body meets the requirements of the Poka Yoke principle, which technical precautions or facilities for immediate
  • Error detection and prevention includes.
  • the contacting of the transducer element extends in two recesses of the insulating body.
  • electrically conductive cables are used as the contacting, this means that the cable connected to the plus side of the piezoelectric transducer element can run in a recess of the insulating body and the cable connected to the minus side of the piezoelectric transducer element can run in another recess of the insulating body.
  • two recesses remain unoccupied in a symmetrically constructed insulating body, ie an insulator with four recesses, in which other lines can run, such as those already above mentioned supply line to the pressure sensor of the pressure measuring sensor.
  • the substantially square insulating body has rounded corners, so that the insulator with little play in the circular interior of the
  • hollow cylindrical sensor housing can be used, with a distance between the straight portions of the cuboid sides of the insulating body and the inner circumference of the sensor housing remains.
  • Insulator that is, the curvature of the curves of the respective rounding of the corners are preferably on the same circumference, which is an optimal
  • the at least one recess has a rounded shape, for example the shape of a lower part of a semicircle.
  • Transitions between the semicircular recess and the straight side surfaces of the cuboid insulating body should also be rounded in order to avoid any sharp edges that may occur.
  • the recesses may also have a polygonal shape, which may have functional advantages over the rounded shape.
  • the insulating body assumes a substantially x-shaped shape by the previously described design features.
  • the outer contour of the insulating body is designed so that both the interaction with sensor module-external and with sensor module-internal neighboring components is space-optimized.
  • the outer contour of the insulating body is designed so that the space-optimized structure can be supported by a suitable assembly process.
  • the transducer element has a substantially parallelepiped shape.
  • a cuboid transducer element has the advantage that it is inexpensive to produce without requiring additional manufacturing steps, such as drilling a central hole.
  • an evaluation device or the like such as a signal processing unit of an electronic module of Druckmessglühkerze
  • the Contact element has a contact plate and a contact arm, wherein the Contact plate in contact with a base of the transducer element is and the contact arm is arranged in a recess of the insulating body.
  • the contact plate of the contact element also has at least one recess which coincides with the at least one recess in the insulating body.
  • the sensor housing has a hollow cylindrical shape, ie the shape of a hollow cylinder, the ends of which are open and thus provide an open to the outside interior.
  • Each cover element has at least one recess on its outer circumference, so that the interior of the sensor housing is not completely closed to the outside. The recess is in
  • each lid member has a symmetrical shape, which means that each lid member has at least two recesses which are arranged opposite to each other.
  • the sensor module has a further insulating body, which has an identical design as the insulating body previously described.
  • Transducer element is arranged in the installed state between the two insulators, wherein in a preferred embodiment, the components of the sensor module in the order cover element, insulator, contact element, transducer element,
  • the further insulating body is preferably provided for pressure transmission to the transducer element, wherein a pressure-transmitting component pressure forces on the other
  • Insulator can transmit, which in turn transmits this to the transducer element.
  • the Isolier Sciencesgestalt with its outer contour described above can be simple constructive be extruded, so that a simple component is created.
  • An insulating body ie the production of at least one insulating or further insulator can therefore be implemented by a cold pressing process, any other type of production of a ceramic molding can also be used, such as ceramic powder injection molding, and ceramic injection molding process (short : CIM method) called.
  • a pressure measuring glow plug comprising a housing, an electronics module disposed in the housing, a sensor module disposed in the housing as described above, and a glow plug at least partially disposed outside the housing
  • Sensor module is mechanically connected. This means that a combustion chamber pressure to be measured is transmitted via the glow plug to the sensor module, and more precisely via the further insulating body to the transducer element, this through the
  • Transducer element is converted into a charge signal, which is then passed through the contact from the sensor module out and to the electronic module, through which the charge signal can be evaluated.
  • a contact between the glow plug and the electronic module which may also have a control unit for controlling the heating of the glow plug in addition to an evaluation unit for evaluating the charge signal, extends at least partially in an inner circumferential channel of the sensor module, which is formed by the respective outer circumferential recess of at least the cover element and insulator , This makes it possible to extend the contact of the glow plug within the sensor module, rather than outside of the sensor module, whereby a space of the entire pressure measuring glow plug can be reduced in relation to the diameter thereof.
  • Insulating body can be aligned, which brings a tolerance minimization with it.
  • FIG. 1 is a partially cutaway perspective view of a sensor module according to the preferred embodiment of the invention; shows the sensor module shown in Figure 1 from a different perspective;
  • Figure 3a shows a perspective view of an insulating body of the in Figures 1 and
  • FIG. 3b shows a plan view of the insulating body shown in FIG. 3a; and shows a pressure measuring glow plug with the sensor module arranged therein according to the preferred embodiment of the invention.
  • FIG. 1 shows a preferred embodiment of the sensor module 1 according to the invention in a partially sectioned perspective view.
  • the sensor module 1 has a preferably made of steel, for example steel with the material number 1 .4016, produced sensor housing 2 in the form of a hollow cylinder in which a mechanical-electrical transducer element 3 is arranged centrally, ie a transducer element, which convert a mechanical change in shape into an electrical signal can, and vice versa.
  • this embodiment is a piezoelectric transducer element 3 in a square shape.
  • the transducer element 3 at each of its base surfaces preferably made of steel, for example made of steel with the material number 1 .4301, existing electrode 5 as a contact element, each electrode 5 of an electrode plate 51 as a contact plate and an electrode arm 52nd exists as a contact arm.
  • each electrode plate 51 at least one recess 51 1 is provided on its outer circumference, here in the form of a semicircular indentation.
  • the transducer element 3 together with the electrodes 5 arranged thereon is arranged or inserted between insulating bodies 4.
  • Material number 1 .4301 consists, on the one side and a second fixing bolt 7, which is also preferably made of steel, fixed on the other side.
  • Fixing bolts 6, 7 serve as cover elements which close the sensor housing 2 to the outside at least partially.
  • the insulating body 4 each have a recess 41 in each side surface, ie in its outer periphery, wherein a respective electrode arm 52 is bent into one of the recesses 41 of the insulating body 4 on the side of the second fixing bolt 7
  • Electrode arm 52 is at least partially covered.
  • Each of the fixing bolts 6, 7 has on its outer circumference two recesses 61, 71, which over the respective
  • Fixing bolts 6, 7 away from each other are arranged opposite.
  • the recesses 71 of the second fixing bolt 7 merge into an axial through-hole 721 of a projection 72 of the fixing bolt 7, as can be seen in FIG.
  • further axial through-holes 722 are provided in the projection 72, which extend through the entire fixing bolt 7 away.
  • a sensor cable 8 is performed, which in each case is in communication with a corresponding electrode arm 52 of the electrodes 5.
  • Each sensor cable 8 is sealed by an insulation 81, preferably made of Teflon, in the respective through-hole 722.
  • the first fixing bolt 6 has, in addition to the recesses 61, a central axial through-bore 62.
  • the sensor housing 2 is usually arranged in a pressure-measuring glow plug 9 such that the first fixing bolt 6 is disposed on the side of the combustion chamber facing the combustion chamber
  • Sensor housing 2 is arranged, and that the second fixing bolt 7 is arranged on the side facing away from the combustion chamber side of the sensor housing 2.
  • Fixing pin 6 can therefore also be referred to as a combustion chamber-side fixing bolt 6, and the second fixing bolt 7 can therefore also be referred to as combustion chamber facing away from fixing bolt 7, wherein the through hole 62 in the combustion chamber facing fixing bolt 6 is thus aligned to the (not shown) combustion chamber.
  • the components 3, 4, 5, 6, 7 arranged on and in the sensor housing 2 are arranged such that the recess 61 of the combustion chamber-side fixing bolt 6, the recess 41 of the combustion chamber side
  • Through hole 721 of the combustion chamber facing away from the fixing pin 7 form a passing through the sensor module 1 channel, which is enclosed by the components 3, 4, 5, 6, 7 on one side and the inner peripheral wall of the sensor housing 2 on the other side.
  • the transducer element 3 is chosen in size so that it does not protrude into the channel. As can also be seen in FIGS. 1 and 2, these are
  • Transducer element 3 the insulating body 4 and the first and second fixing bolts 6, 7 formed as symmetrical components, which greatly reduces the possibility of incorrect assembly of these components in and on the sensor housing 1 if not completely prevented.
  • FIG. 3 a an insulating body 4 according to the preferred embodiment of the sensor module 1 according to the invention is shown in a perspective view, and FIG. 3 b shows a top view of the insulating body 4.
  • the insulating body 4 consists of two preferably flat base surfaces 42 and four straight in principle
  • Mold release paragraph or mold release paragraph 47 which is necessary in terms of manufacturing technology, when the ceramic insulator 4 is produced in the CIM process.
  • the mold releasing shoulder 47 may be omitted when the insulating body 4 is manufactured by a pressing method, for example.
  • a part of the pressure-measuring glow plug 9 is in part
  • the pressure-measuring glow plug 9 consists of a two-part plug housing 91, in which an electronic module 92 and a glow plug 93 are arranged next to the sensor module 1, the glow plug 93 at least partially from the pressure measuring glow plug 9 in the direction of the combustion chamber (not shown) protrudes.
  • the glow plug 93 is arranged in a holding tube 95, which is mounted axially movably in the plug housing 91.
  • the glow plug 93 is further electrically connected by a wire connection to a terminal bolt 96
  • Inner peripheral wall of the sensor housing 2 is enclosed on the other side.
  • the sensor module 1 or the sensor housing 2 can be inserted directly into the plug housing 91, without having a contacting in the form of cables between it and the plug housing 91.
  • the connecting bolt 96 is likewise fixedly arranged in the holding tube 95, wherein a combustion chamber facing away from the end of the connecting bolt 96, which is in communication with the contact 94, at least partially protrudes from the holding tube 95.
  • the brennraumabgewandte end of the connecting bolt 96 is adapted so that it is movable in the
  • combustion chamber-side insulating body 4 is mechanically in contact.
  • Charge signal is here the difference charge between the two potentials of the transducer element 3.
  • An evaluation circuit which may be implemented by the electronic module 92, then converts the charge signal into a pressure-proportional voltage signal.
  • Sensor module 1 are also used in a stand-alone combustion chamber pressure sensor.

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

La présente invention concerne un module capteur comportant un boîtier de capteur, au moins un élément transducteur piézoélectrique agencé dans le boîtier de capteur et au moins un corps isolant agencé dans le boîtier de capteur, à côté de l'élément transducteur. Le corps isolant présente, sur sa périphérie extérieure, un évidement dans lequel s'étend un élément de mise en contact électrique de l'élément transducteur. La présente invention concerne en outre une bougie-crayon de préchauffage à mesure de pression comportant un module capteur de ce type.
EP14739477.9A 2013-08-12 2014-07-17 Module capteur pour une bougie-crayon de préchauffage à mesure de pression Withdrawn EP3033605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215860.2A DE102013215860A1 (de) 2013-08-12 2013-08-12 Sensormodul für Druckmessglühstiftkerze
PCT/EP2014/065372 WO2015022139A1 (fr) 2013-08-12 2014-07-17 Module capteur pour une bougie-crayon de préchauffage à mesure de pression

Publications (1)

Publication Number Publication Date
EP3033605A1 true EP3033605A1 (fr) 2016-06-22

Family

ID=51205404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14739477.9A Withdrawn EP3033605A1 (fr) 2013-08-12 2014-07-17 Module capteur pour une bougie-crayon de préchauffage à mesure de pression

Country Status (6)

Country Link
US (1) US10001106B2 (fr)
EP (1) EP3033605A1 (fr)
JP (1) JP6113366B2 (fr)
CN (1) CN105431723A (fr)
DE (1) DE102013215860A1 (fr)
WO (1) WO2015022139A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT518650B1 (de) * 2016-06-07 2017-12-15 Piezocryst Advanced Sensorics Piezoelektrischer drucksensor zum messen hoher drücke

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009377A1 (de) * 1990-03-23 1991-10-02 Bosch Gmbh Robert Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen
DE19857958A1 (de) * 1998-12-16 2000-06-21 Bosch Gmbh Robert Verfahren zur Herstellung eines Stiftheizer
CN1734076A (zh) 2004-08-05 2006-02-15 日本特殊陶业株式会社 具有燃烧压力探测功能的电热塞
CN100580403C (zh) 2005-02-24 2010-01-13 基斯特勒控股公司 用于压电式作用力或压力传感器的、通过电绝缘膜固定在一起的部件
DE102006008350A1 (de) * 2006-02-21 2007-08-30 Robert Bosch Gmbh Druckmesseinrichtung
JP5181682B2 (ja) * 2008-01-11 2013-04-10 住友電気工業株式会社 同軸ケーブルハーネスの接続構造及び接続方法
DE102009026436A1 (de) 2009-05-25 2010-12-09 Robert Bosch Gmbh Vorrichtung zur Erfassung eines Brennraumdrucks einer Brennkraftmaschine
JP2011144978A (ja) * 2010-01-13 2011-07-28 Ngk Spark Plug Co Ltd 燃焼圧力センサ付きグロープラグ
DE102010038798A1 (de) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Vorrichtung zur Erfassung eines Brennraumdrucks
DE102011088474A1 (de) 2011-12-14 2013-06-20 Robert Bosch Gmbh Druckmesseinrichtung, insbesondere Druckmessglühkerze
DE102012219824A1 (de) * 2012-10-30 2014-04-30 Robert Bosch Gmbh Miniaturisierter Brennraumdrucksensor mit zugvorgespanntem Sensorgehäuse

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015022139A1 *

Also Published As

Publication number Publication date
US10001106B2 (en) 2018-06-19
WO2015022139A1 (fr) 2015-02-19
JP6113366B2 (ja) 2017-04-12
JP2016535853A (ja) 2016-11-17
CN105431723A (zh) 2016-03-23
US20160186712A1 (en) 2016-06-30
DE102013215860A1 (de) 2015-02-12

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