EP2524132A1 - Injecteur de carburant - Google Patents

Injecteur de carburant

Info

Publication number
EP2524132A1
EP2524132A1 EP10787423A EP10787423A EP2524132A1 EP 2524132 A1 EP2524132 A1 EP 2524132A1 EP 10787423 A EP10787423 A EP 10787423A EP 10787423 A EP10787423 A EP 10787423A EP 2524132 A1 EP2524132 A1 EP 2524132A1
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel injector
nozzle needle
force
injector according
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Withdrawn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
EP10787423A
Other languages
German (de)
English (en)
Inventor
Nestor Rodriguez-Amaya
Siegfried Ruthardt
Holger Rapp
Wolfgang Stoecklein
Bernd Berghaenel
Marco Beier
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 EP2524132A1 publication Critical patent/EP2524132A1/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Withdrawn legal-status Critical Current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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided

Definitions

  • the invention relates to fuel injectors with injection nozzle controlled by a nozzle needle or the like and one with a high and a
  • Low pressure side of the injector communicating control chamber which is designed as a working space of a drive-coupled to the nozzle needle displacer and by means of a control valve arrangement between a closing pressure, wherein the nozzle needle is placed by the displacer in its closed position, and an opening pressure is reversible, wherein the nozzle needle with the displacer in the offense passes.
  • the nozzle needle has a nozzle-remote end which is designed in the manner of a plunger and which is arranged displaceably in the control chamber. This communicates via an inlet throttle with the high pressure side of the fuel injector and is connected via the control valve assembly with the low pressure side of the fuel injector.
  • the pilot valve is only connected to the high-pressure side of the injector, while the pressure in the control chamber drops when the control valve arrangement is open as a result of the then additionally existing connection of the control chamber to the low-pressure side.
  • the control chamber has an outlet channel which opens out to the low-pressure side of a valve body and which is controlled by a sleeve-shaped closing body of the control valve arrangement.
  • This sleeve-shaped closing body is arranged displaceably on a guide shaft which is equiaxial to the outlet channel, wherein the annular gap between the outer circumference of the guide rod and the inner circumference of the sleeve-shaped closing body is designed as a virtually leak-free sealing gap.
  • the sleeve-shaped closing body cooperates with a seat concentric with the mouth of the outlet channel and is connected to an armature, which in turn interacts with an electromagnet arrangement which is coaxial to the guide rod.
  • control chamber is associated with a force or pressure sensor for detecting characteristic pressure changes when closing or opening the nozzle needle.
  • the invention makes use of the knowledge that the control chamber pressure changes significantly at the beginning and at the end of the injection phase of the fuel injector. By now registering the control room pressure, the operation of the fuel injector can be monitored with high precision. This is done according to the invention via a pressure measurement, despite the small volume of a fuel injector is comparatively easy to carry out. Thus, a structurally complex detection of the stroke of the nozzle needle is unnecessary.
  • a low-pressure outlet port of the control chamber of the fuel injector is controllable by means of a sleeve-shaped closing body which is displaceably arranged on a guide rod equiaxial to the outlet port, and in that the guide rod with its end remote from the mouth with a pressure sensor arrangement is coupled.
  • the guide rod is used to remove the control chamber pressure on a force or pressure sensor assembly. It is advantageous that the force or pressure sensor assembly can be arranged away from the control chamber in the fluidic low-pressure region of the fuel injector, so that a permanent insulation of the usually electrical elements of Kraft etc.
  • Pressure sensor arrangement is readily possible.
  • the invention also offers the possibility of utilizing the signals of the force or pressure sensor arrangement for determining the pressure of a fuel injector associated high-pressure fuel source, usually a common rail. It is advantageous on the one hand that a hitherto customary separate pressure detection can be omitted at the high pressure source.
  • a multiple redundant pressure detection is readily possible with the invention, because engines with injection systems regularly have multiple fuel injectors, so that are provided with the inventively provided at the fuel injectors force or pressure sensors and several signal sources for pressure detection.
  • Fig. 1 is a partial axial section of a fuel injector according to the invention.
  • Fig. 2 diagrams showing the timing of the nozzle needle stroke and the control chamber pressure.
  • a high-pressure chamber 2 and a low-pressure chamber 3 are arranged within an injector body 1. These two spaces are separated from each other by a valve piece 4.
  • the high pressure chamber 2 communicates via an inlet channel 5 with a high pressure fuel source, not shown, for fuel, usually a so-called common rail.
  • the low-pressure space 3 is connected to a fuel tank or the like via a return line 21 or the like.
  • the high pressure chamber 2 is connected via injection nozzles, not shown, with the combustion chamber of an internal combustion engine, also not shown.
  • the injection nozzles are controlled in a known manner by means of a nozzle needle, of which in Fig. 1, only the nozzle-distal end, which is designed as a plunger 6, is shown.
  • the plunger 6 is arranged displacer-effective in a control chamber 7 arranged in the valve piece 4.
  • This control chamber 7 communicates via an inlet throttle 8 with the high-pressure chamber 2 and via a preferably throttled outflow channel 9 with the low-pressure chamber 3, wherein the flow channel 9 controlled by a control valve assembly 10 becomes.
  • the control valve assembly 10 has a sleeve-shaped closing body 11, which is tensioned by a closing spring 12, which is designed as a helical compression spring against a concentric to the outlet port of the flow channel 9 seat.
  • the seat is designed as a flat surface on which the sleeve-shaped closing body 11 is seated with a line-shaped annular edge. In principle, however, a differently shaped seat may be provided.
  • the sleeve-shaped closing body 11 is axially displaceably guided on a guide rod 13 which is equiaxial to the longitudinal axis 100 of the injector body 1, wherein the annular gap between the inner circumference of the closing body 11 and the outer circumference of the guide rod 13 is formed as a practically leak-free throttling or sealing gap.
  • the pressure chamber 14 formed within the closing body 11 which communicates with the control chamber 7 via the outlet channel 9 and then has the same fluid pressure as the control chamber 7, is shut off from the low-pressure chamber 3.
  • a star-shaped armature 15 of an electromagnet assembly 16 is arranged, which is provided as an actuator for actuating the control valve assembly 10.
  • This solenoid assembly 16 has in a known manner a magnetic coil 17 which is disposed within a concentric to the guide rod 13 electromagnet assembly having an annular outer pole 18 and an annular inner pole 19. If the magnetic coil 17 is electrically energized, the armature 15 of the poles 18 and 19 magnetically attracted, so that the closing body 11 is lifted against the force of the closing spring 12 from its seat and the control valve assembly 10 is opened.
  • the control valve assembly 10 is closed, and in the pressure chamber 14 and in the control chamber 7 are the same fluid pressures.
  • the pressure in the control chamber 7 drops because of the low pressure under the nozzle seat of the nozzle needle and the associated closing movement of the plunger 6 under the high pressure in the inlet channel 5.
  • the control chamber pressure increases to the pressure in the inlet channel 5.
  • the pressure in the control chamber 7 and thus virtually identical pressure in the pressure chamber 14 thus have a pronounced minimum at the closing time of the nozzle needle.
  • Fig. 2 the course of the nozzle needle stroke in the diagram A and the course of the control chamber pressure in the diagram B is exemplified. Since the pressure of the control chamber 7 is also present in the pressure chamber 14 when the closing body 11 is closed, the guide rod 13 is always loaded by the control chamber pressure inside the closing body 11 in this valve position. According to the invention, it is now provided to remove the control chamber pressure by means of the guide rod 13 on a force or pressure sensor 20 shown schematically in FIG.
  • the guide rod 13 thus has a double function in that on the one hand the sleeve-shaped closing body 11 axially and on the other hand as a force transmission member between the pressure chamber 14 and the control chamber 7 communicating therewith and the force or pressure sensor 20. liable that the force or pressure sensor 20 in the low pressure region of the fuel injector, in the example shown in the drawing near the mouth of a low pressure chamber 3 with a relatively pressureless fuel tank or the like connecting return line 21 is arranged.
  • the force or pressure sensor 20 may expediently be formed as a piezoelectric element, on which a dependent of the contact pressure of the guide rod 13 electrical voltage can be tapped. Since the force or pressure sensor 20 can only be acted upon by low-pressure fuel, there are no difficulties with regard to the necessary electrical insulation. Because conventional insulation materials are sufficiently resistant to fuels that are under low pressure. Other conditions exist for fuels under high pressure. Here no long-term stable insulating materials are known, so that a direct pressurization of an electrical element with fuel under high pressure can not be tolerated in the long term.
  • the pressure or force sensors 20 can in principle utilize any force or pressure-dependent physical effects.
  • piezoelectric elements are suitable, on which an electrical voltage can be tapped, which depends on the external forces acting on the element.
  • piezoresistive elements are also possible and advantageous which exploit the so-called piezoresistive effect, which is that many materials change their specific electrical resistance under the action of compressive or tensile forces.
  • piezoresistive elements are electrical resistors in which the degree of electrical resistance changes as a function of external forces.
  • the pressure in the inlet 5 in turn from the pressure of the high-pressure fuel source of the injection system, usually a common rail, is determined from the measurement data of the sensors 20 and the respective operating pressure of the high-pressure fuel source. This is especially true during the closing phase of the nozzle needle, because in this phase flow dynamic effects on each injector minimal, ie in the control chamber 7 of the injector and thus in the pressure chamber 14 is at a pressure which largely corresponds to the pressure of the high-pressure fuel source.
  • an internal combustion engine with an injection system generally has a plurality of cylinders or combustion chambers and accordingly a plurality of injectors
  • the pressure or force sensors 20 are available from a plurality of fuel injectors, so that the supply pressure of the fuel or of the high-pressure fuel source is determined multiple times redundantly can.
  • a communicating with the force or pressure sensors 20 engine control "knows" with appropriate data evaluation, the opening and closing times of the nozzle needle and the respective pressure of the high-pressure fuel source of the injection system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Selon l'invention, un capteur de force ou de pression (20) est affecté à un espace de commande (7), dont la pression détermine les courses et/ou les positions d'une aiguille d'injecteur (6) pour saisir le déroulement de la pression de l'espace de commande. Comme la pression de l'espace de commande change significativement lors de la fermeture de l'aiguille d'injecteur (6), il est possible de déterminer exactement les phases opératoires de l'injecteur à partir des données des capteurs et de les transmettre à une commande du moteur.
EP10787423A 2010-01-12 2010-12-03 Injecteur de carburant Withdrawn EP2524132A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010000827A DE102010000827A1 (de) 2010-01-12 2010-01-12 Kraftstoffinjektor
PCT/EP2010/068828 WO2011085867A1 (fr) 2010-01-12 2010-12-03 Injecteur de carburant

Publications (1)

Publication Number Publication Date
EP2524132A1 true EP2524132A1 (fr) 2012-11-21

Family

ID=43531190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10787423A Withdrawn EP2524132A1 (fr) 2010-01-12 2010-12-03 Injecteur de carburant

Country Status (5)

Country Link
US (1) US9328707B2 (fr)
EP (1) EP2524132A1 (fr)
CN (1) CN102713234B (fr)
DE (1) DE102010000827A1 (fr)
WO (1) WO2011085867A1 (fr)

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DE102015213739A1 (de) 2015-07-21 2017-01-26 Robert Bosch Gmbh Kraftstoffinjektor und Verfahren zur Herstellung eines Kraftstoffinjektors

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DE102010044012A1 (de) * 2010-11-16 2012-05-16 Robert Bosch Gmbh Kraftstoffinjektor
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DE102012211005A1 (de) 2012-06-27 2014-01-02 Robert Bosch Gmbh Vorrichtung und Verfahren zur Messung des Ankerhubs in einem Kraftstoffinjektor
DE102012221084A1 (de) 2012-11-19 2014-05-22 Robert Bosch Gmbh Drucksensor und Komponente einer Brennstoffeinspritzanlage mit einem Drucksensor
DE102012223244A1 (de) * 2012-12-14 2014-06-18 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102013200243A1 (de) 2013-01-10 2014-07-10 Robert Bosch Gmbh Piezoelektrisches Bauteil und Verfahren zur Herstellung eines piezoelektrischen Bauteils
DE102013200244A1 (de) 2013-01-10 2014-07-10 Robert Bosch Gmbh Piezoelektrisches Bauteil und Verfahren zur Herstellung eines piezoelektrischen Bauteils
DE102013200242A1 (de) 2013-01-10 2014-07-10 Robert Bosch Gmbh Piezoelektrisches Bauteil und Verfahren zur Herstellung eines piezoelektrischen Bauteils
GB201314826D0 (en) * 2013-08-20 2013-10-02 Delphi Tech Holding Sarl Control Valve Arrangement
DE102013225386A1 (de) 2013-12-10 2015-06-11 Robert Bosch Gmbh Sensoreinrichtung zur Kraft- oder Druckerfassung, Verfahren zum Herstellen einer Sensoreinrichtung und Kraftstoffinjektor mit einer Sensoreinrichtung
DE102014204098A1 (de) * 2014-03-06 2015-09-10 Robert Bosch Gmbh Verfahren zur Regelung eines Common-Rail-Injektors
DE102014210558A1 (de) 2014-06-04 2015-12-17 Robert Bosch Gmbh Verfahren zur Detektion eines eine Einspritzung charakterisierenden Zeitpunkts eines Kraftstoffinjektors
DE102014210561A1 (de) 2014-06-04 2015-12-17 Robert Bosch Gmbh Verfahren zur Steuerung von Mehrfacheinspritzungen insbesondere bei einem Kraftstoff-Einspritzsystem einer Brennkraftmaschine
DE102014220795A1 (de) 2014-10-14 2016-04-14 Robert Bosch Gmbh Verfahren zur Vorgabe eines Stroms in einem Magnetventil
DE102015201512A1 (de) 2015-01-29 2016-08-04 Robert Bosch Gmbh Verfahren zum Ermitteln eines charakteristischen Zeitpunktes eines Einspritzvorgangs eines Kraftstoffinjektors
DE102015201514A1 (de) 2015-01-29 2016-08-04 Robert Bosch Gmbh Verfahren zum Ermitteln eines charakteristischen Zeitpunktes eines Einspritzvor-gangs eines Kraftstoffinjektors
DE102015212119A1 (de) 2015-06-30 2017-01-05 Robert Bosch Gmbh Verfahren zum Ermitteln eines charakteristischen Zeitpunktes eines durch eine Ansteuerung eines Kraftstoffinjektors verursachten Einspritzvorgangs
FR3051956B1 (fr) * 2016-05-31 2018-05-25 Continental Automotive France Procede de detection de la defaillance d'une solution logicielle d'estimation de l'instant d'interruption d'une injection de carburant d'un moteur a combustion interne
DE102016219067A1 (de) 2016-09-30 2018-04-05 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
DE102016220961A1 (de) 2016-10-25 2018-04-26 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016221062A1 (de) 2016-10-26 2018-04-26 Robert Bosch Gmbh Verfahren zum Betreiben eines Magnetventils
DE102016222514A1 (de) 2016-11-16 2018-05-17 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016222508A1 (de) * 2016-11-16 2018-05-17 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016014871A1 (de) 2016-12-14 2018-06-14 Daimler Ag Verfahren zur Druckverlaufsermittlung in einer Kraftstoffverteilerleitung einer Verbrennungskraftmaschine
DE102017200204A1 (de) 2017-01-09 2018-07-12 Robert Bosch Gmbh Verfahren zur Überprüfung eines Kraftstoffinjektors
DE102017200202A1 (de) 2017-01-09 2018-07-12 Robert Bosch Gmbh Verfahren zur Überprüfung eines Magnetventils eines Kraftstoffinjektors
US11466652B2 (en) * 2017-06-14 2022-10-11 Cummins Inc. Fuel injector having a self-contained replaceable pilot valve assembly
DE102017215536A1 (de) 2017-09-05 2019-03-07 Robert Bosch Gmbh Verfahren zur Überprüfung eines Magnetventils eines Kraftstoffinjektors
DE102017216942A1 (de) 2017-09-25 2019-03-28 Robert Bosch Gmbh Verfahren zum Kalibrieren eines Kraft- oder Drucksensors
DE102018209749A1 (de) 2018-06-18 2019-12-19 Robert Bosch Gmbh Kraftstoffinjektor
DE102018218857A1 (de) 2018-11-06 2020-05-07 Robert Bosch Gmbh Verfahren zum Ermitteln einer Zeitkonstanten einer Schaltungsanordnung und Schaltungsanordnung
DE102020208056B3 (de) * 2020-06-29 2021-06-10 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Bestimmen und Verwenden einer kraftstoffinjektorindividuellen Kenngröße eines Kraftstoffinjektors
DE102021201908A1 (de) 2021-03-01 2022-09-01 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Bestimmen eines Zustands eines Schaltventils eines Kraftstoffinjektors
DE102021205381A1 (de) 2021-05-27 2022-12-01 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Charakterisieren von Kraftstoff
DE102021213931A1 (de) 2021-12-08 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Ermitteln von Betriebsvariablen einer Brennkraftmaschine

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EP2427650A1 (fr) * 2009-05-07 2012-03-14 Robert Bosch GmbH Injecteur de carburant doté d'un détecteur de pression

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011085867A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015213739A1 (de) 2015-07-21 2017-01-26 Robert Bosch Gmbh Kraftstoffinjektor und Verfahren zur Herstellung eines Kraftstoffinjektors
WO2017012730A1 (fr) 2015-07-21 2017-01-26 Robert Bosch Gmbh Injecteur de carburant et procédé de fabrication d'un injecteur de carburant

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Publication number Publication date
DE102010000827A1 (de) 2011-07-14
CN102713234B (zh) 2016-10-19
US9328707B2 (en) 2016-05-03
CN102713234A (zh) 2012-10-03
US20120325936A1 (en) 2012-12-27
WO2011085867A1 (fr) 2011-07-21

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