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US20110240629A1 - Glow plug - Google Patents

Glow plug Download PDF

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Publication number
US20110240629A1
US20110240629A1 US13/069,250 US201113069250A US2011240629A1 US 20110240629 A1 US20110240629 A1 US 20110240629A1 US 201113069250 A US201113069250 A US 201113069250A US 2011240629 A1 US2011240629 A1 US 2011240629A1
Authority
US
United States
Prior art keywords
sleeve
glow plug
slit
glow
slits
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.)
Abandoned
Application number
US13/069,250
Inventor
Nicolaus Wulff
Martin Eller
Christian Pottiez
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.)
BorgWarner Ludwigsburg GmbH
Original Assignee
BorgWarner Beru Systems 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 BorgWarner Beru Systems GmbH filed Critical BorgWarner Beru Systems GmbH
Assigned to BORGWARNER BERU SYSTEMS GMBH reassignment BORGWARNER BERU SYSTEMS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WULFF, NICOLAUS, ELLER, MARTIN, POTTIEZ, CHRISTIAN
Publication of US20110240629A1 publication Critical patent/US20110240629A1/en
Abandoned 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
    • 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
    • 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
    • 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

  • the invention is directed to a glow plug having the features in the preamble of claim 1 .
  • glow plugs can be equipped with a contact spring via which the glow element is connected to a supply lead.
  • the problem addressed by the invention is that of demonstrating a way in which glow plugs can be manufactured with less expenditure.
  • a sleeve having at least one slit extending transversely to the longitudinal direction of the sleeve is used as a contact spring.
  • Assembly is advantageously simplified in this manner. Namely, a sleeve can be easily oriented coaxially with the glow element and the supply lead e.g. by being inserted thereon. Tilting that would occur during outward spring deflection is easily prevented.
  • the contact spring can be fastened to the glow element and the supply lead easily e.g. by welding, soldering, or crimping.
  • the spring hardness of the contact spring according to the invention can be adapted to the requirements of a given type of glow plug by the number of slits. Without changing the installation techniques, the spring hardness can therefore be designed precisely as needed and can be matched to the installation space of a glow plug type.
  • the at least one slit extends perpendicularly to the longitudinal direction of the sleeve.
  • a resilient extensibility or tractility of the sleeve in the longitudinal direction can also be attained by one or more slits extending obliquely to the longitudinal direction.
  • the depth of the slit or slits is preferably greater than half of the outer diameter of the sleeve. If the slit depths are shallower, the deformability of the sleeve in the longitudinal direction is improved only slightly. Slit depths greater than two-thirds, in particular greater than three-fourths of the outer diameter of the sleeve are particularly preferred. Slit depths between one-tenth and one-fifth of the outer diameter of the sleeve are advantageous in particular.
  • the depth of a slit is understood to mean the extension thereof perpendicularly to the longitudinal direction of the sleeve.
  • the maximum possible compression of the spring is determined by the width of the slit or slits. Slit widths between one-tenth and one-fourth of the outer diameter of the sleeve, and, in particular, between one-seventh and one-fourth of the outer diameter of the sleeve are particularly advantageous.
  • At least two slits are provided, which are interspaced in the longitudinal direction of the sleeve. Additional slits can be provided to reduce the spring hardness. Particularly preferably, two slits extend in different, preferably opposite directions. In the case of a sleeve having a single slit, there is a tendency for the sleeve to bend to one side when loaded. The sleeve can be stabilized against bending by providing a plurality of slits which extend in different directions. It is particularly advantageous when two slits extend in opposite directions i.e.
  • the sleeve has slits on radially opposite sides, which are interspaced in the longitudinal direction of the sleeve.
  • the slits themselves are therefore not situated opposite one another.
  • the directions of the slits, namely toward the base of the slits, are opposite, however.
  • the distance between adjacent slits as measured from slit edge to slit edge is at least one-tenth of the outer diameter of the sleeve, in particular at least one-seventh of the outer diameter of the sleeve.
  • the sleeve is preferably inserted onto the supply lead. This permits simple, rapid installation. Particularly preferably the sleeve is crimped with the supply lead. An electrical connection that is suitable for transferring high currents can be created easily in this manner.
  • the sleeve can be inserted onto the glow element.
  • the sleeve is inserted onto an intermediate piece situated between the glow element and the sleeve.
  • the intermediate piece can bring about an adaptation between the diameter of the sleeve and that of the glow element.
  • a glow plug according to the invention preferably has a ceramic glow element, although it can also have a glow element composed of metal, in particular steel.
  • the advantage of simple length compensation by a contact spring according to the invention is particularly significant for ceramic glow elements, however, since they are fragile.
  • FIG. 1 shows an embodiment of a glow plug according to the invention
  • FIG. 2 shows a sectional view of FIG. 1 ;
  • FIG. 3 shows the contact spring of the embodiment shown.
  • the glow plug shown in FIG. 1 has a housing 1 , out of the front end of which a ceramic glow element 2 extends.
  • a potential connection 3 is disposed on the rear end of the glow plug, via which glow element 2 can be connected to a voltage source.
  • Housing 1 is used as the ground connection.
  • FIG. 2 shows a sectional view of the rear part of the glow plug shown in FIG. 1 .
  • a supply lead 4 which is connected to glow element 2 via a contact spring extends away from potential connection 3 in housing 1 .
  • Contact spring 5 is shown in FIG. 3 and is designed as a metal sleeve which comprises a plurality of slits 6 extending transversely to the longitudinal direction thereof. Preferably exactly two slits 6 are provided, as is the case in the embodiment shown.
  • Slits 6 are separated by a distance in the longitudinal direction of cylindrical sleeve 5 .
  • Slits 6 extend in opposite directions i.e. in FIG. 2 one of the slits 6 extends from left to right and the other slit 6 extends from right to left.
  • the width of slits 6 determines the maximum range of spring by which the spring can be compressed in the longitudinal direction.
  • slits 6 have a width that is greater than the wall thickness of sleeve 5 .
  • a slit width in particular that is between one-tenth and one-fourth of the outer diameter of the sleeve is advantageous. In the embodiment shown, the slit width is one-fifth of the outer diameter of sleeve 5 .
  • the distance between the two slits 6 is preferably at least one-tenth of the outer diameter of sleeve 5 . Distances in particular of between one-seventh and one-fourth of the outer diameter of the sleeve are advantageous. Furthermore, it is preferable for the distance between the two slits 6 to be between one-half and twice the slit width. The distance and the slit width are approximately equal in the embodiment shown.
  • Slits 6 preferably extend perpendicularly to the longitudinal direction of sleeve 5 , although they can basically also extend obliquely to the longitudinal direction. Slits 6 are located in a cylindrical section of sleeve 5 and have a depth that is preferably between one-tenth and one-fifth, in particular between one-seventh and one-fifth of the outer diameter of the cylindrical sleeve section. Preferably sleeve 5 has a consistent diameter along the entire length thereof, as is the case with the embodiment shown. Sleeve 5 can have another diameter, however, on one of the ends thereof in particular e.g. to simplify insertion onto supply lead 3 , glow element 2 , or other parts.
  • Sleeve 5 is inserted via one end onto supply lead 3 and is crimped therewith. Sleeve 5 is placed via the other end thereof onto an intermediate piece 7 disposed between sleeve 5 and glow element 2 . Intermediate piece 7 is preferably inserted onto glow element 2 .
  • the glow plug that is depicted is a pressure-measuring glow plug.
  • Glow element 2 can be moved against a return force in the longitudinal direction thereof relative to housing 1 .
  • the position of glow element 2 relative to housing 1 is detected using a sensor, which is not depicted, and the combustion chamber pressure is determined on the basis thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The invention relates to a glow plug comprising a housing (1), a glow element (2) which extends out of the housing (1), a supply lead (4) which is connected to the glow element (2) via a contact spring (5) and is enclosed by the housing (1). According to the invention, the contact spring (5) is a sleeve having at least one slit (6) extending transversely to the longitudinal direction of the sleeve.

Description

    DESCRIPTION
  • The invention is directed to a glow plug having the features in the preamble of claim 1.
  • To transfer current and compensate for motions of the glow element, glow plugs can be equipped with a contact spring via which the glow element is connected to a supply lead.
  • The problem addressed by the invention is that of demonstrating a way in which glow plugs can be manufactured with less expenditure.
  • This problem is solved by a glow plug having the features indicated in claim 1. Advantageous developments of the invention are the subject matter of dependent claims.
  • According to the invention, a sleeve having at least one slit extending transversely to the longitudinal direction of the sleeve is used as a contact spring. Assembly is advantageously simplified in this manner. Namely, a sleeve can be easily oriented coaxially with the glow element and the supply lead e.g. by being inserted thereon. Tilting that would occur during outward spring deflection is easily prevented. The contact spring can be fastened to the glow element and the supply lead easily e.g. by welding, soldering, or crimping.
  • Advantageously the spring hardness of the contact spring according to the invention can be adapted to the requirements of a given type of glow plug by the number of slits. Without changing the installation techniques, the spring hardness can therefore be designed precisely as needed and can be matched to the installation space of a glow plug type.
  • Preferably the at least one slit extends perpendicularly to the longitudinal direction of the sleeve. A resilient extensibility or tractility of the sleeve in the longitudinal direction can also be attained by one or more slits extending obliquely to the longitudinal direction. The depth of the slit or slits is preferably greater than half of the outer diameter of the sleeve. If the slit depths are shallower, the deformability of the sleeve in the longitudinal direction is improved only slightly. Slit depths greater than two-thirds, in particular greater than three-fourths of the outer diameter of the sleeve are particularly preferred. Slit depths between one-tenth and one-fifth of the outer diameter of the sleeve are advantageous in particular. The depth of a slit is understood to mean the extension thereof perpendicularly to the longitudinal direction of the sleeve.
  • The maximum possible compression of the spring is determined by the width of the slit or slits. Slit widths between one-tenth and one-fourth of the outer diameter of the sleeve, and, in particular, between one-seventh and one-fourth of the outer diameter of the sleeve are particularly advantageous.
  • According to an advantageous development of the invention, at least two slits are provided, which are interspaced in the longitudinal direction of the sleeve. Additional slits can be provided to reduce the spring hardness. Particularly preferably, two slits extend in different, preferably opposite directions. In the case of a sleeve having a single slit, there is a tendency for the sleeve to bend to one side when loaded. The sleeve can be stabilized against bending by providing a plurality of slits which extend in different directions. It is particularly advantageous when two slits extend in opposite directions i.e. the sleeve has slits on radially opposite sides, which are interspaced in the longitudinal direction of the sleeve. The slits themselves are therefore not situated opposite one another. The directions of the slits, namely toward the base of the slits, are opposite, however.
  • Preferably, the distance between adjacent slits as measured from slit edge to slit edge is at least one-tenth of the outer diameter of the sleeve, in particular at least one-seventh of the outer diameter of the sleeve.
  • The sleeve is preferably inserted onto the supply lead. This permits simple, rapid installation. Particularly preferably the sleeve is crimped with the supply lead. An electrical connection that is suitable for transferring high currents can be created easily in this manner.
  • The sleeve can be inserted onto the glow element. Preferably, however, the sleeve is inserted onto an intermediate piece situated between the glow element and the sleeve. Advantageously, the intermediate piece can bring about an adaptation between the diameter of the sleeve and that of the glow element.
  • Further details and advantages of the invention are explained using an embodiment, with reference to the attached drawings. In the drawings:
  • A glow plug according to the invention preferably has a ceramic glow element, although it can also have a glow element composed of metal, in particular steel. The advantage of simple length compensation by a contact spring according to the invention is particularly significant for ceramic glow elements, however, since they are fragile.
  • FIG. 1 shows an embodiment of a glow plug according to the invention;
  • FIG. 2 shows a sectional view of FIG. 1; and
  • FIG. 3 shows the contact spring of the embodiment shown.
    •
  • The glow plug shown in FIG. 1 has a housing 1, out of the front end of which a ceramic glow element 2 extends. A potential connection 3 is disposed on the rear end of the glow plug, via which glow element 2 can be connected to a voltage source. Housing 1 is used as the ground connection.
  • FIG. 2 shows a sectional view of the rear part of the glow plug shown in FIG. 1. A supply lead 4 which is connected to glow element 2 via a contact spring extends away from potential connection 3 in housing 1. Contact spring 5 is shown in FIG. 3 and is designed as a metal sleeve which comprises a plurality of slits 6 extending transversely to the longitudinal direction thereof. Preferably exactly two slits 6 are provided, as is the case in the embodiment shown.
  • Slits 6 are separated by a distance in the longitudinal direction of cylindrical sleeve 5. Slits 6 extend in opposite directions i.e. in FIG. 2 one of the slits 6 extends from left to right and the other slit 6 extends from right to left. The width of slits 6 determines the maximum range of spring by which the spring can be compressed in the longitudinal direction. Preferably slits 6 have a width that is greater than the wall thickness of sleeve 5. A slit width in particular that is between one-tenth and one-fourth of the outer diameter of the sleeve is advantageous. In the embodiment shown, the slit width is one-fifth of the outer diameter of sleeve 5.
  • The distance between the two slits 6, as measured from slit edge to slit edge, is preferably at least one-tenth of the outer diameter of sleeve 5. Distances in particular of between one-seventh and one-fourth of the outer diameter of the sleeve are advantageous. Furthermore, it is preferable for the distance between the two slits 6 to be between one-half and twice the slit width. The distance and the slit width are approximately equal in the embodiment shown.
  • Slits 6 preferably extend perpendicularly to the longitudinal direction of sleeve 5, although they can basically also extend obliquely to the longitudinal direction. Slits 6 are located in a cylindrical section of sleeve 5 and have a depth that is preferably between one-tenth and one-fifth, in particular between one-seventh and one-fifth of the outer diameter of the cylindrical sleeve section. Preferably sleeve 5 has a consistent diameter along the entire length thereof, as is the case with the embodiment shown. Sleeve 5 can have another diameter, however, on one of the ends thereof in particular e.g. to simplify insertion onto supply lead 3, glow element 2, or other parts.
  • Sleeve 5 is inserted via one end onto supply lead 3 and is crimped therewith. Sleeve 5 is placed via the other end thereof onto an intermediate piece 7 disposed between sleeve 5 and glow element 2. Intermediate piece 7 is preferably inserted onto glow element 2.
  • The glow plug that is depicted is a pressure-measuring glow plug. Glow element 2 can be moved against a return force in the longitudinal direction thereof relative to housing 1. The position of glow element 2 relative to housing 1 is detected using a sensor, which is not depicted, and the combustion chamber pressure is determined on the basis thereof.
    • REFERENCE NUMERALS
  • 1 Housing
  • 2 Glow element
  • 3 Potential connection
  • 4 Supply lead
  • 5 Contact spring
  • 6 Slit
  • 7 Intermediate piece

Claims (10)

1. A glow plug comprising
a housing (1),
a glow element (2) that extends out of the housing (1),
a supply lead (4) which is enclosed by the housing (1) and is connected via a contact spring (3) to the glow element (2), characterized in that
the contact spring (5) is a sleeve having at least one slit (6) extending transversely to the longitudinal direction of the sleeve.
2. The glow plug according to claim 1, characterized in that the slit (6) extends perpendicularly to the longitudinal direction of the sleeve.
3. The glow plug according to one of the preceding claims, characterized in that the slit (6) has a depth that is more than one-half, preferably more than two-thirds, in particular more than three-fourths of the outer diameter of the sleeve (5).
4. The glow plug according to claim 3, characterized in that the depth of the slit (6) is between one-tenth and one-fifth of the outer diameter of the sleeve (5).
5. The glow plug according to one of the preceding claims, characterized in that the slit (6) has a depth that is between one-tenth and one-fourth of the outer diameter of the sleeve (5).
6. The glow plug according to one of the preceding claims, characterized in that at least two slits (6) are provided which are interspaced in the longitudinal direction of the sleeve (5) and extend in different, preferably opposite directions.
7. The glow plug according to claim 6, characterized in that the distance between adjacent slits (6), measured from slit edge to slit edge, is at least one-tenth of the outer diameter of the sleeve.
8. The glow plug according to one of the preceding claims, characterized in that the sleeve is inserted onto the supply lead (4).
9. The glow plug according to one of the preceding claims, characterized in that the sleeve is crimped with the supply lead (4).
10. The glow plug according to one of the preceding claims, characterized in that the sleeve is inserted onto an intermediate piece (7) situated between the glow element (2) and the sleeve.
US13/069,250 2010-03-31 2011-03-22 Glow plug Abandoned US20110240629A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010013598A DE102010013598B4 (en) 2010-03-31 2010-03-31 glow plug
DE102010013598.4 2010-03-31

Publications (1)

Publication Number Publication Date
US20110240629A1 true US20110240629A1 (en) 2011-10-06

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ID=44650025

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/069,250 Abandoned US20110240629A1 (en) 2010-03-31 2011-03-22 Glow plug

Country Status (3)

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US (1) US20110240629A1 (en)
CN (1) CN102207294A (en)
DE (1) DE102010013598B4 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998928A1 (en) * 2012-12-04 2014-06-06 Bosch Gmbh Robert Glow plug for diesel engine, has electrode comprising tubular extensible segment formed by elastically deformable rings connected by connection arches, where arches are shifted from one of rings to following ring in peripheral direction
JP2015004506A (en) * 2013-06-20 2015-01-08 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Sheath type glow plug
US8978454B2 (en) 2012-10-24 2015-03-17 Borgwarner Ludwigsburg Gmbh Pressure gauge
EP3006830A1 (en) * 2014-10-09 2016-04-13 NGK Spark Plug Co., Ltd. Glow plug
US20180045412A1 (en) * 2016-08-11 2018-02-15 Borgwarner Ludwigsburg Gmbh Pressure measuring glow plug

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054511B4 (en) * 2011-07-05 2013-08-29 Borgwarner Beru Systems Gmbh glow plug

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US20070237657A1 (en) * 2004-09-24 2007-10-11 Sperre Mek. Verksted As Piston engine
US20080216786A1 (en) * 2005-04-12 2008-09-11 Siemens Vdo Automotive Glow Plug with Integrated Pressure Sensor
US20080264373A1 (en) * 2005-05-09 2008-10-30 Peter Boehland Sheathed Element Glow Plug Having a Combustion Chamber Pressure Sensor

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DE1206049B (en) * 1961-09-14 1965-12-02 Amp Inc Electrical connection terminal for distribution cable
US4846736A (en) * 1982-04-30 1989-07-11 Prestolite Wire Corporation Ignition wire terminal
DE8314801U1 (en) * 1983-05-19 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart Electrical plug connection on high voltage cable
DE3518030C2 (en) * 1985-05-20 1987-03-05 Multi-Contact AG Basel, Basel Electrically conductive contact device
DE19506950C2 (en) * 1995-02-28 1998-07-23 Bosch Gmbh Robert Glow plug for diesel engines
JP3801756B2 (en) * 1996-11-19 2006-07-26 日本特殊陶業株式会社 Ceramic glow plug
US6094122A (en) * 1999-09-08 2000-07-25 Ford Motor Company Mechanical locking connection for electric terminals
DE102004012673A1 (en) * 2004-03-16 2005-10-06 Robert Bosch Gmbh Glow plug with elastically mounted glow plug
US7351935B2 (en) * 2004-06-25 2008-04-01 Ngk Spark Plug Co., Ltd. Method for producing a ceramic heater, ceramic heater produced by the production method, and glow plug comprising the ceramic heater
JP2008020176A (en) * 2006-06-14 2008-01-31 Ngk Spark Plug Co Ltd Glow plug with built-in sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070237657A1 (en) * 2004-09-24 2007-10-11 Sperre Mek. Verksted As Piston engine
US20080216786A1 (en) * 2005-04-12 2008-09-11 Siemens Vdo Automotive Glow Plug with Integrated Pressure Sensor
US20080264373A1 (en) * 2005-05-09 2008-10-30 Peter Boehland Sheathed Element Glow Plug Having a Combustion Chamber Pressure Sensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8978454B2 (en) 2012-10-24 2015-03-17 Borgwarner Ludwigsburg Gmbh Pressure gauge
FR2998928A1 (en) * 2012-12-04 2014-06-06 Bosch Gmbh Robert Glow plug for diesel engine, has electrode comprising tubular extensible segment formed by elastically deformable rings connected by connection arches, where arches are shifted from one of rings to following ring in peripheral direction
JP2014109434A (en) * 2012-12-04 2014-06-12 Robert Bosch Gmbh Preheating plug of diesel engine having extendible electrode
JP2015004506A (en) * 2013-06-20 2015-01-08 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Sheath type glow plug
EP3006830A1 (en) * 2014-10-09 2016-04-13 NGK Spark Plug Co., Ltd. Glow plug
US20180045412A1 (en) * 2016-08-11 2018-02-15 Borgwarner Ludwigsburg Gmbh Pressure measuring glow plug
US10641487B2 (en) * 2016-08-11 2020-05-05 Borgwarner Ludwigsburg Gmbh Pressure measuring glow plug

Also Published As

Publication number Publication date
DE102010013598A1 (en) 2011-10-06
DE102010013598B4 (en) 2012-05-24
CN102207294A (en) 2011-10-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BORGWARNER BERU SYSTEMS GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WULFF, NICOLAUS;ELLER, MARTIN;POTTIEZ, CHRISTIAN;SIGNING DATES FROM 20110314 TO 20110315;REEL/FRAME:025999/0761

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION