EP1725849A1 - Vorrichtung zur erfassung des brennraumdrucks bei einer brennkraftmaschine - Google Patents
Vorrichtung zur erfassung des brennraumdrucks bei einer brennkraftmaschineInfo
- Publication number
- EP1725849A1 EP1725849A1 EP05707764A EP05707764A EP1725849A1 EP 1725849 A1 EP1725849 A1 EP 1725849A1 EP 05707764 A EP05707764 A EP 05707764A EP 05707764 A EP05707764 A EP 05707764A EP 1725849 A1 EP1725849 A1 EP 1725849A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- glow plug
- combustion chamber
- housing
- fixing member
- 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- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 45
- 125000006850 spacer group Chemical group 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G01L23/221—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 for detecting or indicating knocks in internal combustion engines
- G01L23/222—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 for detecting or indicating knocks in internal combustion engines using piezoelectric devices
-
- 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
- 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 based on a device for detecting the combustion chamber pressure in an internal combustion engine.
- a device for detecting a combustion chamber pressure in a diesel engine is already known from DE 196 80 912 C2, with a pressure sensor and a heating section of a glow plug. This heating section faces an interior of a cylinder of the diesel engine and can be acted upon by the combustion chamber pressure.
- the heating section is fixed within a housing of the glow plug by a fixing member.
- the pressure sensor is arranged between this fixing member and the heating section.
- the heating section designed as a glow plug and the pressure sensor are supported by the same fixing member with respect to the housing of the glow plug, so that the pressure sensor is acted on at least approximately by the entire force acting on the glow plug.
- the arrangement of the pressure sensor described above with its spatial proximity to the interior of the cylinder and with its direct coupling to the Glow plug in operation of the diesel engine disadvantageously connected to a significant thermal load on the pressure sensor, so that its operational safety is at risk.
- This can lead, particularly if the signal output of the pressure sensor is discontinuous due to fluctuations between high and low operating temperatures, to malfunctions of the device for detecting the combustion chamber pressure in the internal combustion engine and thus also to an uncertain measurement of the combustion chamber pressure in the internal combustion engine.
- the device according to the invention with the characterizing features of the main claim has the advantage that the aforementioned shortcomings are avoided to a satisfactory extent.
- the senor is arranged between the fixing element of the glow plug of the glow plug and a second end of the glow plug. This offers the possibility to decouple the sensor from the full force acting on the glow plug and to operate it in its linear and low-hysteresis range.
- the load range of the sensor can be deliberately limited so that the signal-optimal range of the sensor can be used with regard to a safe and reproducible detection of the combustion chamber pressure in the internal combustion engine.
- the sensor is thermally relieved, so that the sensor is relieved with regard to its
- the at least indirect non-positive connection of the sensor with the fixing member takes place with pretension. This counteracts a hysteresis effect during the acquisition of measured values.
- the senor is separated from the fixing member or the fixing element by at least one spacer.
- the maximum force acting on the sensor can be set.
- the at least one spacer body is designed as an intermediate sleeve, the sensor as a piezo ring and the fixing element as a sleeve.
- glow and signal lines for the glow plug or the sensor can be passed through in a simplified manner.
- a device for detecting the combustion chamber pressure in an internal combustion engine contains a glow plug 11 which is mounted by means of an external thread 12 of a tubular housing 13 made of metal in a cylinder head 14 of the internal combustion engine, only a part of which is shown, in particular a diesel engine.
- the glow plug 11 has a glow plug 17 which partially protrudes from the housing 13 and projects with a free end 18 into an interior 19 of the internal combustion engine which forms a combustion chamber.
- the glow plug 17 is fastened in the glow plug 11 by a fixing member 22.
- This fixing member 22 is designed as a support tube which, in one end region 23 of the other end of the glow plug 17, surrounds it fixedly on the circumference, the fixing member 22 projecting slightly beyond the other end of the glow plug 17.
- the fixing member 22 is in turn pressed into the housing 13.
- the fixing member 22 could also be realized by a graphite sleeve or in the form of a material connection, for example as a welded connection.
- a sensor 26 is arranged between the fixing member 22 and the second end 24 of the glow plug 11.
- the sensor 26 is spaced from the facing end of the fixing member 22 in the exemplary embodiment by a spacer 27.
- the sensor 26 could also bear directly against the facing end of the fixing member 22.
- the sensor 26 is supported by a fixing element 29 for the sensor 24, with a spacer 28 being interposed, which is fixed in the housing 13 and thus fixes the position of the sensor 24 in the housing 13.
- the fixing element 29 is designed, for example, as a sleeve caulked in the housing 13 and, alternatively, could also be in direct contact with the sensor 26.
- the spacer 27 and the spacer 28 are each in the form of an intermediate sleeve 31, which is preferably made of ceramic or steel.
- contacting elements which are not detailed, emerge in the form of electrical lines, which serve, for example, on the one hand to supply power to the glow plug 17 and on the other hand to forward the signals emitted by the sensor 26.
- part of the compressive force on the glow plug 17 leads to an elastic longitudinal deformation of the housing 13 between the end of the fixing member 22 which faces the sensor 26 and the fixing point of the fixing element 29 on the housing 13 on this force transmission path.
- This deformation is caused by the Sensor 26, which is implemented, for example, in the exemplary embodiment by a force or displacement sensor designed as a piezo ring.
- the signal emitted by the sensor 26 can be correlated with the pressure in the combustion chamber 19 via characteristic curves. In the ideal case, the signal emitted by the sensor 26 is a variable that is proportional to the pressure in the combustion chamber 19.
- the sensor 26 can also be operated in a preloaded manner in order to detect the pressure in the combustion chamber 19, for example in order to reduce hysteresis effects.
- the sensor 26 after the glow plug 17 has been fixed by the fixing member 22 on the housing 13, is subjected to a predetermined force which, even when the internal combustion engine is not in operation, alternatively also only presses it indirectly against the fixing member 22 via the intermediate spacer 27.
- This preload is maintained by the fixing element 29, which is fixedly mounted in the housing 13, or a spacer element 28 fixed to the housing 13.
- the maximum force on the sensor 26 can be determined by the
- Stiffness of the housing 13, the fixing member 22 or the fixing element 29 can be set.
- the area of the sensor 26 that is optimal in terms of signal technology can be used are, so that a safe and reproducible detection of the combustion chamber pressure is possible in the internal combustion engine.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004011098A DE102004011098A1 (de) | 2004-03-06 | 2004-03-06 | Vorrichtung zur Erfassung des Brennraumdrucks bei einer Brennkraftmaschine |
PCT/EP2005/050123 WO2005085787A1 (de) | 2004-03-06 | 2005-01-13 | Vorrichtung zur erfassung des brennraumdrucks bei einer brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1725849A1 true EP1725849A1 (de) | 2006-11-29 |
Family
ID=34877508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05707764A Withdrawn EP1725849A1 (de) | 2004-03-06 | 2005-01-13 | Vorrichtung zur erfassung des brennraumdrucks bei einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7730771B2 (de) |
EP (1) | EP1725849A1 (de) |
JP (1) | JP2007527541A (de) |
DE (1) | DE102004011098A1 (de) |
WO (1) | WO2005085787A1 (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2869394B1 (fr) * | 2004-04-27 | 2006-07-14 | Siemens Vdo Automotive Sas | Tete de bougie de prechauffage et capteur de pression piezo-electrique correspondant |
DE102004063750A1 (de) * | 2004-12-29 | 2006-07-13 | Robert Bosch Gmbh | Glühstiftkerze mit integriertem Brennraumdrucksensor |
DE102005021229A1 (de) * | 2005-05-09 | 2006-11-16 | Robert Bosch Gmbh | Glühstiftkerze mit Brennraumdrucksensor |
DE102005051817B4 (de) * | 2005-10-28 | 2008-06-05 | Beru Ag | Druckmessglüheinrichtung, insbesondere Druckmessglühkerze |
DE102006008639A1 (de) * | 2005-12-23 | 2007-06-28 | Robert Bosch Gmbh | Glühstiftkerze |
DE102006049079A1 (de) * | 2006-10-13 | 2008-04-17 | Robert Bosch Gmbh | Druckmesseinrichtung |
DE102007044967A1 (de) | 2007-09-19 | 2009-04-02 | Beru Ag | Glühkerze mit verkokungsoptimiertem Design, spezielle Ringspaltausbildung |
DE102008017110B3 (de) * | 2008-04-02 | 2009-09-10 | Beru Ag | Druckmessglühkerze |
DE102008020509B4 (de) * | 2008-04-23 | 2010-02-25 | Beru Ag | Verfahren zur Herstellung einer Vorrichtung zur Ermittlung des Brennraumdrucks und eine solche Vorrichtung |
US9291075B2 (en) | 2008-07-22 | 2016-03-22 | Eaton Corporation | System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a control gallery |
US9581058B2 (en) | 2010-08-13 | 2017-02-28 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US8915225B2 (en) | 2010-03-19 | 2014-12-23 | Eaton Corporation | Rocker arm assembly and components therefor |
US9284859B2 (en) | 2010-03-19 | 2016-03-15 | Eaton Corporation | Systems, methods, and devices for valve stem position sensing |
US9016252B2 (en) | 2008-07-22 | 2015-04-28 | Eaton Corporation | System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a hydraulic lash adjuster gallery |
US9708942B2 (en) | 2010-03-19 | 2017-07-18 | Eaton Corporation | Rocker arm assembly and components therefor |
US9038586B2 (en) | 2010-03-19 | 2015-05-26 | Eaton Corporation | Rocker assembly having improved durability |
US9938865B2 (en) | 2008-07-22 | 2018-04-10 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US9228454B2 (en) | 2010-03-19 | 2016-01-05 | Eaton Coporation | Systems, methods and devices for rocker arm position sensing |
US20190309663A9 (en) | 2008-07-22 | 2019-10-10 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US10415439B2 (en) | 2008-07-22 | 2019-09-17 | Eaton Intelligent Power Limited | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US10087790B2 (en) | 2009-07-22 | 2018-10-02 | Eaton Corporation | Cylinder head arrangement for variable valve actuation rocker arm assemblies |
US11181013B2 (en) | 2009-07-22 | 2021-11-23 | Eaton Intelligent Power Limited | Cylinder head arrangement for variable valve actuation rocker arm assemblies |
US9194261B2 (en) | 2011-03-18 | 2015-11-24 | Eaton Corporation | Custom VVA rocker arms for left hand and right hand orientations |
US8505365B2 (en) * | 2010-03-16 | 2013-08-13 | Eaton Corporation | Magnetically coded pressure detection apparatus |
US8863569B2 (en) | 2010-03-16 | 2014-10-21 | Eaton Corporation | Magnetically coded temperature and pressure detection apparatus |
US9874122B2 (en) | 2010-03-19 | 2018-01-23 | Eaton Corporation | Rocker assembly having improved durability |
US9885258B2 (en) | 2010-03-19 | 2018-02-06 | Eaton Corporation | Latch interface for a valve actuating device |
EP2444786B1 (de) * | 2010-10-20 | 2013-07-17 | Sensata Technologies, Inc. | Druckmessglühkerze für einen Verbrennungsmotor |
WO2012115036A1 (ja) * | 2011-02-25 | 2012-08-30 | 本田技研工業株式会社 | 燃料直噴式内燃機関の筒内圧検出装置 |
USD750670S1 (en) | 2013-02-22 | 2016-03-01 | Eaton Corporation | Rocker arm |
CN105121090A (zh) | 2014-03-03 | 2015-12-02 | 伊顿公司 | 气门致动装置及其制造方法 |
US20160232438A1 (en) | 2015-02-06 | 2016-08-11 | American Express Travel Related Services Company, Inc. | Ceramic-containing transaction cards |
DE102016114929B4 (de) * | 2016-08-11 | 2018-05-09 | Borgwarner Ludwigsburg Gmbh | Druckmessglühkerze |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5985932A (ja) * | 1982-11-09 | 1984-05-18 | Nippon Soken Inc | グロ−プラグ |
DE10218544A1 (de) * | 2001-04-26 | 2002-11-28 | Denso Corp | Glühkerze mit eingebautem Verbrennungsdrucksensor |
WO2005040681A1 (fr) * | 2003-10-29 | 2005-05-06 | Siemens Vdo Automotive | Bougie de prechauffage comprenant un capteur de pression et moteur ainsi equipe |
Family Cites Families (13)
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 |
JP3911930B2 (ja) | 1999-10-28 | 2007-05-09 | 株式会社デンソー | 燃焼圧センサ付きグロープラグ |
JP4003363B2 (ja) * | 1999-12-24 | 2007-11-07 | 株式会社デンソー | 燃焼圧センサ構造体 |
US6799451B2 (en) * | 2001-03-05 | 2004-10-05 | Delphi Technologies, Inc. | Spark generating apparatus having strain gage cylinder pressure measurement feature |
JP3900060B2 (ja) * | 2002-10-07 | 2007-04-04 | 株式会社デンソー | 燃焼圧センサ付きグロープラグ |
EP1486653B1 (de) * | 2003-06-12 | 2016-04-13 | Denso Corporation | Verbrennungsdrucksensor |
DE10343521A1 (de) * | 2003-09-19 | 2005-04-21 | Beru Ag | Druckmessglühkerze für einen Dieselmotor |
US6948372B2 (en) * | 2004-01-08 | 2005-09-27 | Delphi Technologies, Inc. | Method of connection to a spark plug pressure sensor |
DE102004024341B3 (de) * | 2004-05-17 | 2005-12-22 | Beru Ag | Druckmessglühkerze |
EP1637806B1 (de) * | 2004-09-15 | 2012-02-01 | Beru AG | Druckmessglühkerze für einen Dieselmotor |
JP2006307834A (ja) * | 2005-03-31 | 2006-11-09 | Ngk Spark Plug Co Ltd | 燃焼圧センサおよびそれを備えたグロープラグ |
JP2007309916A (ja) * | 2006-04-20 | 2007-11-29 | Denso Corp | 燃焼圧センサ |
AT503662B1 (de) * | 2006-04-20 | 2007-12-15 | Piezocryst Advanced Sensorics | Glühkerze mit integriertem drucksensor |
-
2004
- 2004-03-06 DE DE102004011098A patent/DE102004011098A1/de not_active Withdrawn
-
2005
- 2005-01-13 US US10/591,924 patent/US7730771B2/en not_active Expired - Fee Related
- 2005-01-13 EP EP05707764A patent/EP1725849A1/de not_active Withdrawn
- 2005-01-13 WO PCT/EP2005/050123 patent/WO2005085787A1/de active Application Filing
- 2005-01-13 JP JP2007502317A patent/JP2007527541A/ja not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5985932A (ja) * | 1982-11-09 | 1984-05-18 | Nippon Soken Inc | グロ−プラグ |
DE10218544A1 (de) * | 2001-04-26 | 2002-11-28 | Denso Corp | Glühkerze mit eingebautem Verbrennungsdrucksensor |
WO2005040681A1 (fr) * | 2003-10-29 | 2005-05-06 | Siemens Vdo Automotive | Bougie de prechauffage comprenant un capteur de pression et moteur ainsi equipe |
Non-Patent Citations (1)
Title |
---|
See also references of WO2005085787A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005085787A1 (de) | 2005-09-15 |
JP2007527541A (ja) | 2007-09-27 |
US7730771B2 (en) | 2010-06-08 |
US20080028841A1 (en) | 2008-02-07 |
DE102004011098A1 (de) | 2005-09-22 |
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