EP0994250A2 - Détecteur à haute pression - Google Patents

Détecteur à haute pression Download PDF

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Publication number
EP0994250A2
EP0994250A2 EP99810565A EP99810565A EP0994250A2 EP 0994250 A2 EP0994250 A2 EP 0994250A2 EP 99810565 A EP99810565 A EP 99810565A EP 99810565 A EP99810565 A EP 99810565A EP 0994250 A2 EP0994250 A2 EP 0994250A2
Authority
EP
European Patent Office
Prior art keywords
welding
threaded body
pressure sensor
sensor according
measuring head
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.)
Granted
Application number
EP99810565A
Other languages
German (de)
English (en)
Other versions
EP0994250A3 (fr
EP0994250B1 (fr
Inventor
Kurt Vollenweider
Hans Conrad Sonderegger
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.)
Kistler Holding AG
Original Assignee
KK Holding AG
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 KK Holding AG filed Critical KK Holding AG
Publication of EP0994250A2 publication Critical patent/EP0994250A2/fr
Publication of EP0994250A3 publication Critical patent/EP0994250A3/fr
Application granted granted Critical
Publication of EP0994250B1 publication Critical patent/EP0994250B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump

Definitions

  • the invention relates to high pressure sensors, e.g. in Injection systems for internal combustion engines or liquid jet cutting machines etc., especially where pulsating hydraulic Pressures to measure or peak at thousands of bar are control.
  • the invention relates to surveillance systems of diesel engines, where peak values from 2000 to 3000 bar are to be measured.
  • Fig. 1 represents a commercially available piezoresistive high pressure sensor consists of the four main parts: threaded body 1, Measuring head 2, membrane part 3, on which the measuring bridge 4 is applied is.
  • Fig. 2 is the threaded body 5, the sealing section 6 and the membrane part 7, on which the capacitive measuring part 8 is mounted, in one piece executed.
  • the membrane part 11 with the sealing section 10 is in one piece executed and welded to the sealing body 10 with the threaded body 9.
  • the measuring bridge 12 consists of a silicone element that is blown onto the membrane part 11.
  • the Prior Art pressure sensors are currently for max. Designed for pressures of 1500 bar and in use.
  • the main idea of the invention relates to the overall view of the hydraulic and mechanical part to make it permanently reliable Find a solution suitable for monitoring purposes.
  • the pressure sensor consists of the 6 main parts: Threaded body 16 Measuring head 14 Membrane section 21 Measuring bridge 22 Sealing section 20th Welding section 15 all of which are coordinated with one another with regard to mechanically permissible material tensions.
  • the membrane section 21 is determined by the parameters ⁇ D 1 , ⁇ D 3 and thickness t.
  • Minimum diameters d of the feed line are also of great importance 19 and the sealing section 20 in order to minimize material stresses to reach.
  • the further part of the invention is directed to the design of the Welding section 15, the execution of which is decisive for safe Continuous operation of the pressure sensor. Long series of tests have shown that welding gaps from the inside, i.e. from the pressure side, below must be prevented in all circumstances.
  • Fig. 5 shows the welding process by means of internal welding in Sweat start moment.
  • the dimensions are according to known regulations of electrical butt welding technology, where the measuring head 14 held by the electrode 32 and electrically connected is.
  • the fusion begins along the Welding cone surface 30, with pressure neck part 24 and welding cone 30 flow into one another, the welding path S being used up.
  • Fig. 6 shows the state after the internal welding, the Welding path S through the pressure welding to the external welding gap 36 was reduced.
  • the welding zone 34 has a transition radius 35, which is free of internal gaps. So that the pressure impulses find no attack surfaces from the inside due to the notch effect can lead to tears.
  • the remaining outer welding gap 36 is in another Operation with laser, gas or electron beam welding closed.
  • the design of the balloon-like pressure measuring space according to the invention with print head part 23 and print neck part 24, with the combined Internal welding to prevent tearing from the inside, and the external welding, to ensure the mechanical strength the connection of the measuring head 14 with the threaded body 16 and the smallest possible diameter d of the feed line 19 is Basis for a high pressure sensor for continuous operation with peak pressures created up to 2500 bar.
  • the design of the membrane section 21 applied measuring bridge 22 can be based on various known technologies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Glass Compositions (AREA)
EP99810565A 1998-07-14 1999-07-01 Détecteur à haute pression Expired - Lifetime EP0994250B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01500/98A CH693490A5 (de) 1998-07-14 1998-07-14 Hochdruck-Sensor.
CH150098 1998-07-14

Publications (3)

Publication Number Publication Date
EP0994250A2 true EP0994250A2 (fr) 2000-04-19
EP0994250A3 EP0994250A3 (fr) 2000-08-09
EP0994250B1 EP0994250B1 (fr) 2003-04-23

Family

ID=4211909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810565A Expired - Lifetime EP0994250B1 (fr) 1998-07-14 1999-07-01 Détecteur à haute pression

Country Status (5)

Country Link
US (1) US6092426A (fr)
EP (1) EP0994250B1 (fr)
AT (1) ATE238536T1 (fr)
CH (1) CH693490A5 (fr)
DE (1) DE59905161D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072911A1 (fr) * 2009-12-15 2011-06-23 Robert Bosch Gmbh Procédé de fabrication d'un dispositif capteur de pression et dispositif capteur de pression
ITBO20100309A1 (it) * 2010-05-17 2011-11-18 Magneti Marelli Spa Pompa carburante per un sistema di iniezione diretta
WO2013159962A1 (fr) * 2012-04-27 2013-10-31 Robert Bosch Gmbh Ensemble de capteurs servant à détecter au moins une propriété d'un milieu fluide et procédé de fabrication d'un tel ensemble de capteurs
EP2918820A1 (fr) * 2014-03-14 2015-09-16 Robert Bosch Gmbh Injecteur de carburant, notamment injecteur à rampe commune

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10034460A1 (de) * 2000-07-15 2002-01-31 Bosch Gmbh Robert Hochdrucksensor, Verfahren und Werkzeug zu seiner Herstellung
US6923068B2 (en) * 2003-06-19 2005-08-02 Dynisco, Inc. Pressure transducer
JP2010249061A (ja) * 2009-04-17 2010-11-04 Denso Corp 燃料噴射弁
DE102011078048A1 (de) * 2011-06-24 2012-12-27 Robert Bosch Gmbh Sensor zur Erfassung mindestens einer Eigenschaft eines fluiden Mediums
DE102016113209A1 (de) * 2016-07-18 2018-01-18 Sensata Germany GmbH Drucksensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5542300A (en) * 1994-01-24 1996-08-06 Setra Systems, Inc. Low cost, center-mounted capacitive pressure sensor
US5587601A (en) * 1995-06-05 1996-12-24 Kulite Semiconductor Products, Inc. Support structure for a semiconductor pressure transducer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164938A (en) * 1977-11-25 1979-08-21 Patton William F Medical pressure gauge and indicator device
US5186055A (en) * 1991-06-03 1993-02-16 Eaton Corporation Hermetic mounting system for a pressure transducer
DE29501112U1 (de) * 1995-01-25 1995-03-23 Heinrich Baumgarten KG, Spezialfabrik für Beschlagteile, 57290 Neunkirchen Druckanzeiger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5542300A (en) * 1994-01-24 1996-08-06 Setra Systems, Inc. Low cost, center-mounted capacitive pressure sensor
US5587601A (en) * 1995-06-05 1996-12-24 Kulite Semiconductor Products, Inc. Support structure for a semiconductor pressure transducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072911A1 (fr) * 2009-12-15 2011-06-23 Robert Bosch Gmbh Procédé de fabrication d'un dispositif capteur de pression et dispositif capteur de pression
US8763465B2 (en) 2009-12-15 2014-07-01 Robert Bosch Gmbh Method for producing a pressure sensor assembly and pressure sensor assembly
ITBO20100309A1 (it) * 2010-05-17 2011-11-18 Magneti Marelli Spa Pompa carburante per un sistema di iniezione diretta
EP2388470A1 (fr) * 2010-05-17 2011-11-23 Magneti Marelli S.p.A. Pompe à combustible pour système à injection directe
US9127631B2 (en) 2010-05-17 2015-09-08 MAGNETI MARELLI S.p.A. Fuel pump for a direct injection system
WO2013159962A1 (fr) * 2012-04-27 2013-10-31 Robert Bosch Gmbh Ensemble de capteurs servant à détecter au moins une propriété d'un milieu fluide et procédé de fabrication d'un tel ensemble de capteurs
EP2918820A1 (fr) * 2014-03-14 2015-09-16 Robert Bosch Gmbh Injecteur de carburant, notamment injecteur à rampe commune

Also Published As

Publication number Publication date
ATE238536T1 (de) 2003-05-15
CH693490A5 (de) 2003-08-29
EP0994250A3 (fr) 2000-08-09
DE59905161D1 (de) 2003-05-28
EP0994250B1 (fr) 2003-04-23
US6092426A (en) 2000-07-25

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