WO2005057005A2 - Systeme permettant de determiner une quantite ejectee d'un dispositif d'injection pour moteurs a combustion interne - Google Patents

Systeme permettant de determiner une quantite ejectee d'un dispositif d'injection pour moteurs a combustion interne Download PDF

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Publication number
WO2005057005A2
WO2005057005A2 PCT/DE2004/002326 DE2004002326W WO2005057005A2 WO 2005057005 A2 WO2005057005 A2 WO 2005057005A2 DE 2004002326 W DE2004002326 W DE 2004002326W WO 2005057005 A2 WO2005057005 A2 WO 2005057005A2
Authority
WO
WIPO (PCT)
Prior art keywords
injection
internal combustion
measuring device
measuring
adaptation
Prior art date
Application number
PCT/DE2004/002326
Other languages
German (de)
English (en)
Other versions
WO2005057005A3 (fr
Inventor
Thorsten Sommer
Walter Lehle
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 WO2005057005A2 publication Critical patent/WO2005057005A2/fr
Publication of WO2005057005A3 publication Critical patent/WO2005057005A3/fr

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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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/002—Measuring fuel delivery of multi-cylinder injection pumps

Definitions

  • Systejn for determining an exit quantity of an injection device for internal combustion engines
  • the invention is based on a system for determining a fuel discharge quantity of an injection device of an internal combustion engine according to the type defined in more detail in the preamble of patent claim 1.
  • an outlet quantity for example an injection quantity provided by the injection device
  • the determination of an outlet quantity can be important, since this can be used to infer possible malfunctions of the injection device.
  • the injection quantity of an injection device designed as an injection valve is subjected to back pressure according to the so-called piston displacement principle.
  • the injector is mounted in an adaptation device, so that a quantity of fuel regulated by means of the injector can be supplied to a piston chamber which is delimited by a piston and filled with liquid.
  • Dependent on The piston experiences an offset from the quantity of fuel introduced into the piston chamber.
  • the offset of the piston and its diameter can then be used to infer the amount of fuel introduced into the piston chamber by means of the injection valve.
  • a variable back pressure of up to 100 bar acts on the injector from the piston chamber.
  • the aim of this is to simulate conditions that prevail when the injector is installed in an engine block and are there, in particular, caused by compression of combustion air.
  • the measurement result depends on the amount of the set counter pressure. After completing the measurement, the quantity of fuel introduced into the piston chamber is emptied by opening a valve. The valve is then closed. If it is ensured that the back pressure prevailing in the piston chamber corresponds to the desired setpoint, a further measurement can be carried out.
  • the system according to the invention for determining a fuel outlet quantity of an injection device of an internal combustion engine with the features according to the preamble of claim 1, in which system the measuring device is connected to the injection device via the adaptation device in such a way that the fuel is supplied to the adaptation device without back pressure. has the advantage that the measuring method that can be carried out by means of the system is independent of external pressure generators or pressure reservoirs. In comparison to a measuring system, system that works according to a back pressure principle requires less design effort for the adaptation of the injection device to the measuring device, since the system does not have to be sealed against a back pressure. As a rule, elastic sealing elements are sufficient to seal the system according to the invention.
  • the system according to the invention also has a high level of robustness or low susceptibility to malfunction, so that it can also be used under harsh environmental conditions, for example in the workshop area.
  • the injection device is, for example, a common rail injector of a diesel internal combustion engine, which has a high-pressure region which represents an injection side and a low-pressure region which represents a return side
  • the system according to the invention can be used to determine both the injection quantity and the return quantity. It is only necessary to design the adaptation device either for connection to the injection side or for connection to the return side.
  • the system according to the invention is suitable for measuring the fuel discharge quantity of any injection devices.
  • the injection device a single-cylinder injection system, such as a common rail injector of a diesel internal combustion engine, an injection valve of an internal combustion engine operating on the Otto principle, or a so-called pump / nozzle system for injecting fuel into a diesel internal combustion engine.
  • the measuring device of the system according to the invention is, for example, a flow meter that works without back pressure and is based on a measuring principle in which a measurement signal is generated that is assigned to a current or time-averaged flow.
  • a flow meter can be, for example, a so-called Coriolis flow meter, a magnetic-inductive flow meter or an ultrasonic flow meter.
  • the measuring device can also be formed from a servo-controlled positive displacement counter or from a measuring device that operates according to a volumetric measuring principle.
  • the measuring device is an integrated component of an internal combustion engine, for example an internal combustion engine of a motor vehicle, and is connected to a monitoring device.
  • the system according to the invention can be used during the operation of the internal combustion engine, so that in the event of a malfunction of the injection device diagnosed on the basis of a changing discharge quantity, this malfunction occurs to a user of the internal combustion engine communicated can be and / or suitable measures can be taken on a control of the internal combustion engine.
  • the adaptation device is preferably formed from a chamber which is connected on the inflow side to the injection device and on the outflow side, optionally via a connecting line, to the measuring device.
  • the chamber and the connecting line should always be dimensioned such that the quantity injected by the injection device is passed to the measuring device without pressure increase, which is caused, for example, by a dynamic pressure.
  • the adaptation device of the system according to the invention can be formed from a hose or pipe system which is connected to a corresponding connection of the injector.
  • Figure 1 is a schematic diagram of a system for determining an injection quantity of a fuel injector of an internal combustion engine
  • Figure 2 is a schematic diagram for determining a return flow of a fuel injector of an internal combustion engine.
  • FIG. 1 shows an injection valve 10 designed as a co-rail injector, which is connected via a line 11 to a high-pressure accumulator (not shown here) for supplying fuel, by means of which it is under high pressure, for example under a pressure of up to 2, 0 kbar standing fuel can be fed into the injection valve 10.
  • the high-pressure accumulator and the injection valve 10 are part of a so-called common-reel injection system of a diesel engine of a motor vehicle.
  • the injector 10 is connected to a system 12 designed according to the invention, which comprises an adaptation device 13 and a measuring device 14.
  • the adaptation device 13 comprises a chamber 15, into which the injector 10 dips so that its injection nozzles 16 are arranged within the chamber 15. A seal between the adaptation device 13 and the chamber 15 takes place by means of a plastic sealing element.
  • the chamber 15 is connected via a connecting line 17 to the measuring device 14, which determines the amount of fuel emitted by the injector and is formed from a servo-controlled displacement meter which has an outlet line 18.
  • the connecting line 17 represents a measuring line for the injection quantity, which can be provided by means of the injector 10.
  • the system 12 shown in FIG. 1 for determining the injection quantity of a common rail injector can be used to easily carry out flow measurements of injectors.
  • the system 12 can be used as part of a service for a field or series repair and possibly also for the series production of common rail injectors.
  • FIG. 2 shows a system 20 for on-board monitoring of a return flow quantity of a common rail injector 10, which is installed in an engine block 21 of a diesel internal combustion engine of a motor vehicle and is connected to a high pressure supply line 11 in order to provide a fuel under high pressure which leads to a high pressure accumulator.
  • the system 20, which is an integral part of the motor vehicle, comprises, as an adaptation device, a hose system 22 which is connected to the injector 10 on the return side. is closed and leads to a measuring device 23, which is formed from a so-called Coriolis flow meter.
  • a measuring device 23 which is formed from a so-called Coriolis flow meter.
  • a return line 24 branches off from the measuring device 23 and leads to a fuel reservoir 25.
  • a differential pressure of 0 bar prevails between the hose system 22, which represents a measuring line for the return flow quantity, and the return line 24 branching off from the flow meter.
  • the measuring device 23 determines the amount of fuel that escapes on the return side when the common rail injector 10 is actuated and transfers this value to a monitoring device 26, by means of which the user of the motor vehicle receives corresponding information in the case of a return amount that does not correspond to the target value can be shown on a display, for example, so that it can take suitable measures.
  • the display is, for example, part of a multifunction instrument of the motor vehicle.
  • the monitoring device 26 transfers the return quantity of the injector 10 determined by means of the measuring device 23 to a control of the internal combustion engine, so that suitable measures can be taken automatically in the case of return quantities deviating from the target value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

L'invention concerne un système (12) permettant de déterminer une quantité de carburant éjectée d'un dispositif d'injection (10) d'un moteur à combustion interne. Ce système (12) comprend un dispositif d'adaptation (13) pour le dispositif d'injection (10) et un dispositif de mesure (14), relié au dispositif d'adaptation (13). Selon la présente invention, ce dispositif de mesure (14) est relié au dispositif d'injection (10) par l'intermédiaire du dispositif d'adaptation (13), de sorte que ce dispositif d'adaptation est alimenté en carburant sans contre-pression.
PCT/DE2004/002326 2003-12-11 2004-10-19 Systeme permettant de determiner une quantite ejectee d'un dispositif d'injection pour moteurs a combustion interne WO2005057005A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357874.9 2003-12-11
DE2003157874 DE10357874A1 (de) 2003-12-11 2003-12-11 System zur Ermittlung einer Austrittsmenge einer Einspritzeinrichtung für Brennkraftmaschinen

Publications (2)

Publication Number Publication Date
WO2005057005A2 true WO2005057005A2 (fr) 2005-06-23
WO2005057005A3 WO2005057005A3 (fr) 2005-09-15

Family

ID=34638598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/002326 WO2005057005A2 (fr) 2003-12-11 2004-10-19 Systeme permettant de determiner une quantite ejectee d'un dispositif d'injection pour moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE10357874A1 (fr)
WO (1) WO2005057005A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102418638A (zh) * 2011-12-30 2012-04-18 运城学院 一种柴油机喷油角度测量装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009043718B4 (de) 2009-10-01 2015-08-20 Avl List Gmbh System und Verfahren zur Messung von Einspritzvorgängen in einer Verbrennungskraftmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747606C (de) * 1942-06-13 1944-10-06 Bosch Gmbh Robert Einrichtung zum Pruefen der Foerdermenge von Kraftstoffeinspritzausruestungen
DE1035405B (de) * 1953-12-16 1958-07-31 Friedmann & Maier Ag Pruefeinrichtung fuer Brennstoffeinspritzanlagen
CH395644A (de) * 1961-11-22 1965-07-15 Bosch Gmbh Robert Verfahren zur Ermittlung des zeitlichen Mengenverlaufs von instationär aus einer Düse ausspritzenden, schwach kompressiblen Medien, insbesondere zur Bestimmung des Einspritzgesetzes von Kraftstoffeinspritzanlagen für Brennkraftmaschinen
DE3334466A1 (de) * 1983-09-23 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum messen von aufeinanderfolgenden kraftstoffeinspritzmengen bei dieseleinspritzanlagen
DE3307243A1 (de) * 1983-03-02 1984-09-06 Robert Bosch Gmbh, 7000 Stuttgart Pruefeinrichtung fuer einspritzanlagen
DE3402804A1 (de) * 1983-12-22 1985-07-11 Robert Bosch Gmbh, 7000 Stuttgart Einspritzpumpenpruefstand
DE3419022A1 (de) * 1984-05-22 1985-11-28 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur spritzdaempfung fuer einen einspritzpumpenpruefstand
DE3915545A1 (de) * 1989-05-12 1990-11-15 Lothar Pege Geraet zur kontinuierlichen volumenmessung
DE19936102C1 (de) * 1999-07-31 2000-10-26 Daimler Chrysler Ag Verfahren zur Überprüfung von in Common-Rail-Einspritzsystemen eingesetzten Einspritzinjektoren
EP1223339A1 (fr) * 2000-12-15 2002-07-17 Robert Bosch Gmbh Dispositif de mesure de la quantité de combustible fournie par un système

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747606C (de) * 1942-06-13 1944-10-06 Bosch Gmbh Robert Einrichtung zum Pruefen der Foerdermenge von Kraftstoffeinspritzausruestungen
DE1035405B (de) * 1953-12-16 1958-07-31 Friedmann & Maier Ag Pruefeinrichtung fuer Brennstoffeinspritzanlagen
CH395644A (de) * 1961-11-22 1965-07-15 Bosch Gmbh Robert Verfahren zur Ermittlung des zeitlichen Mengenverlaufs von instationär aus einer Düse ausspritzenden, schwach kompressiblen Medien, insbesondere zur Bestimmung des Einspritzgesetzes von Kraftstoffeinspritzanlagen für Brennkraftmaschinen
DE3307243A1 (de) * 1983-03-02 1984-09-06 Robert Bosch Gmbh, 7000 Stuttgart Pruefeinrichtung fuer einspritzanlagen
DE3334466A1 (de) * 1983-09-23 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum messen von aufeinanderfolgenden kraftstoffeinspritzmengen bei dieseleinspritzanlagen
DE3402804A1 (de) * 1983-12-22 1985-07-11 Robert Bosch Gmbh, 7000 Stuttgart Einspritzpumpenpruefstand
DE3419022A1 (de) * 1984-05-22 1985-11-28 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur spritzdaempfung fuer einen einspritzpumpenpruefstand
DE3915545A1 (de) * 1989-05-12 1990-11-15 Lothar Pege Geraet zur kontinuierlichen volumenmessung
DE19936102C1 (de) * 1999-07-31 2000-10-26 Daimler Chrysler Ag Verfahren zur Überprüfung von in Common-Rail-Einspritzsystemen eingesetzten Einspritzinjektoren
EP1223339A1 (fr) * 2000-12-15 2002-07-17 Robert Bosch Gmbh Dispositif de mesure de la quantité de combustible fournie par un système

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102418638A (zh) * 2011-12-30 2012-04-18 运城学院 一种柴油机喷油角度测量装置

Also Published As

Publication number Publication date
WO2005057005A3 (fr) 2005-09-15
DE10357874A1 (de) 2005-07-07

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