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EP1048843A2 - Fuel injection device - Google Patents

Fuel injection device Download PDF

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Publication number
EP1048843A2
EP1048843A2 EP00105302A EP00105302A EP1048843A2 EP 1048843 A2 EP1048843 A2 EP 1048843A2 EP 00105302 A EP00105302 A EP 00105302A EP 00105302 A EP00105302 A EP 00105302A EP 1048843 A2 EP1048843 A2 EP 1048843A2
Authority
EP
European Patent Office
Prior art keywords
injection
pressure
fuel
line
fuel injection
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
EP00105302A
Other languages
German (de)
French (fr)
Other versions
EP1048843B1 (en
EP1048843A3 (en
Inventor
Martin Biener
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1048843A2 publication Critical patent/EP1048843A2/en
Publication of EP1048843A3 publication Critical patent/EP1048843A3/en
Application granted granted Critical
Publication of EP1048843B1 publication Critical patent/EP1048843B1/en
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
    • F02M63/06—Use of pressure wave generated by fuel inertia to open injection valves
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors

Definitions

  • the invention relates to a fuel injection device according to the preamble of Main claim.
  • a disadvantage of these known common rail injection systems is the unsatisfactory one Controllability of the injectors and the peak injection pressures that can be achieved with them, which is far below that of other known fuel injection systems such as e.g. the pump-nozzle systems, which reach an injection pressure of up to 2,000 bar.
  • These disadvantages limit the specific power of an engine and especially the ackurate Control of injection and pre-injection.
  • constancy the injection quantities over the life of an internal combustion engine Problem represents.
  • Another disadvantage of the known injection valves with integrated solenoid valve control is their very complicated structure, through which these injectors very expensive to manufacture and also very prone to failure.
  • the object of the invention is therefore a structurally simple fuel injection device to be made available by increasing the injection pressure at the injectors brings a more efficient and thus more environmentally friendly fuel economy.
  • the solenoid valves are arranged separately from the injectors in the injection lines are and the injectors are designed as injection nozzles, for which in particular proven injection nozzles can be used, e.g. from fuel injection systems are known with conventional distributor injection pumps, can also pressure increasing mechanisms known from these known distributor injection pump systems use to compare the injection pressure in the injectors pressure in the common high-pressure line (common rail) must be significantly increased.
  • Another advantage is that tried and tested injectors against the less well dominant injectors with integrated solenoid valve can be replaced, these in terms of manageability, price and constant flow over their lifetime and are far superior in their availability.
  • the solenoid valves are immediate arranged on the common high-pressure line (common rail), so that no separate Supply lines to the solenoid valves are required and this together with the Common Rail can be attached to the engine.
  • nozzles Those with one or two spring holder technology can preferably be used as injection nozzles be a significant price advantage over the known injectors have.
  • a nozzle can be equipped with a needle motion sensor or a Needle stroke encoder be equipped.
  • FIG. 1 shows a schematic representation a fuel injection device with solenoid valves arranged on the common rail Control of the flow to the individual injectors.
  • the fuel injection device consists of a common high-pressure line 1 (Common-Rail), which uses a high-pressure pump 2 from a tank 9 with under high Pressure (approx. 1350 bar) standing fuel is filled.
  • a common high-pressure line 1 (Common-Rail), which uses a high-pressure pump 2 from a tank 9 with under high Pressure (approx. 1350 bar) standing fuel is filled.
  • Lead from high pressure line 1 a plurality of injection lines 4 corresponding to the number of cylinders to be supplied, the injection nozzle 5 projecting into a cylinder combustion chamber of the engine 6 flow out.
  • To control the supply of high-pressure fuel to the injection nozzles 5 are furthermore one solenoid valve 3 each in the injection lines 4, away from the injection nozzles 5, preferably used directly on the high pressure line 1.
  • the geometry of the injection lines 4 between the solenoid valve 3 and the injection nozzle 5 is predetermined in length, diameter and spatial layout in the engine compartment, that a large part of the injection pressure at the injector 5 due to reflections of fuel pressure waves between the solenoid valve 3 and the injection nozzle 5 when fuel suddenly flows into the injection line 4 via the solenoid valve 3 is generated.
  • a safety valve 7 is also arranged on the common high-pressure line 1, which has an opening cross section in a return line 8 for excess fuel on or heading.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A magnetic valve (3) is fitted in an injection pipe (4) remotely from an injector. The injector acts as an injection jet (5) The injection pipe between the magnetic valve and the injection jet is so designed that pressure level against the injection jet can momentarily be raised excessively in an injection area above the maxima for pressure swings in fuel pillars in the injection pip in contrast to pressure in a joint common rail (1).

Description

Die Erfindung betrifft eine Kraftstoffeinspritzvorrichtung gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a fuel injection device according to the preamble of Main claim.

Es sind Kraftstoffeinspritzvorrichtungen für Verbrennungskraftmaschinen mit einer gemeinsamen Hochdruckleitung, dem sogenannten Common-Rail bekannt, DE 195 48 279 A 1, die Injektoren zum Einspritzen des Kraftstoffes in die Zylinder von Verbrennungskraftmaschinen besitzen, wobei der Einspritzvorgang von Magnetventilen gesteuert wird, die jeweils als Bestandteil eines Injektors ausgebildet sind. Dabei führen von der mittels einer Kraftstoffhochdruckpumpe befüllbaren gemeinsamen Hochdruckleitung sämtliche Einspritzleitungen zu den einzelnen Injektoren ab, wobei die Hochdruckleitung dabei als Kraftstoffsammelraum wirkt.They are fuel injectors for internal combustion engines with a common one High-pressure line, known as the common rail, DE 195 48 279 A 1, the injectors for injecting fuel into the cylinders of internal combustion engines have, the injection process being controlled by solenoid valves, which are each designed as part of an injector. Lead by means a fuel high-pressure pump fillable common high-pressure line all Injection lines to the individual injectors, the high pressure line being Fuel plenum works.

Nachteilig an diesen bekannten Common-Rail-Einspritzsystemen sind zum einen die unbefriedigende Beherrschbarkeit der Injektoren sowie die damit erzielbaren Spitzeneinspritzdrücke, die weit unter denen von anderen bekannten Kraftstoffeinspritzsystemen wie z.B. den Pumpe-Düse-Systemen liegen, welche bis zu 2.000 bar Einspritzdruck erreichen. Diese Nachteile begrenzen die spezifische Leistung eines Motors und besonders die ackurate Steuerung der Einspritzung und der Voreinspritzung. Ebenso stellt die Konstanz der Einspritzmengen über die Lebensdauer einer Verbrennungskraftmaschine ein großes Problem dar. Ein weiterer Nachteil der bekannten Einspritzventile mit integrierter Magnetventilsteuerung ist deren sehr komplizierter Aufbau, durch den diese Einspritzventile (Injektoren) in der Herstellung sehr teuer und zudem sehr störanfällig werden.A disadvantage of these known common rail injection systems is the unsatisfactory one Controllability of the injectors and the peak injection pressures that can be achieved with them, which is far below that of other known fuel injection systems such as e.g. the pump-nozzle systems, which reach an injection pressure of up to 2,000 bar. These disadvantages limit the specific power of an engine and especially the ackurate Control of injection and pre-injection. Likewise, constancy the injection quantities over the life of an internal combustion engine Problem represents. Another disadvantage of the known injection valves with integrated solenoid valve control is their very complicated structure, through which these injectors very expensive to manufacture and also very prone to failure.

Aufgabe der Erfindung ist es daher, eine konstruktiv einfache Kraftstoffeinspritzvorrichtung zur Verfügung zu stellen, die durch eine Steigerung des Einspritzdruckes an den Injektoren eine effizientere und damit umweltschonendere Kraftstoffausnutzung mit sich bringt. The object of the invention is therefore a structurally simple fuel injection device to be made available by increasing the injection pressure at the injectors brings a more efficient and thus more environmentally friendly fuel economy.

Die Lösung dieser Aufgabe ergibt sich mit den Oberbegriffsmerkmalen erfindungsgemäß durch die im kennzeichnenden Teil des Hauptanspruches angegebene technische Lehre.This object is achieved with the generic features according to the invention through the technical teaching specified in the characterizing part of the main claim.

Dadurch, daß die Magnetventile getrennt von den Injektoren in den Einspritzleitungen angeordnet sind und die Injektoren als Einspritzdüsen ausgebildet sind, für die insbesondere bewährte Einspritzdüsen verwendet werden können, welche z.B. aus Kraftstoffeinspritzsystemen mit herkömmlichen Verteiler-Einspritzpumpen bekannt sind, lassen sich auch die aus diesen bekannten Verteiler-Einspritzpumpem-Systemen bekannten Druckerhöhungsmechanismen nutzen, um den Einspritzdruck in den Einspritzdüsen gegenüber dem in der gemeinsamen Hochdruckleitung (Common-Rail) befindlich Druck deutlich zu überhöhen.In that the solenoid valves are arranged separately from the injectors in the injection lines are and the injectors are designed as injection nozzles, for which in particular proven injection nozzles can be used, e.g. from fuel injection systems are known with conventional distributor injection pumps, can also pressure increasing mechanisms known from these known distributor injection pump systems use to compare the injection pressure in the injectors pressure in the common high-pressure line (common rail) must be significantly increased.

Um eine solche Drucksteigerung zu erreichen sind demnach außer der Abstimmung der Geometrie der Einspritzleitungen auf die auftretenden Druckschwingungen in den Flüssigkeitssäulen des Kraftstoffes zwischen den Magnetventilen und den zugehörigen Einspritzdüsen keine weiteren technischen Maßnahmen erforderlich.In order to achieve such an increase in pressure, the Geometry of the injection lines to the pressure fluctuations that occur in the liquid columns of fuel between the solenoid valves and the associated injectors no further technical measures required.

Ein weiterer Vorteil besteht darin, daß bewährte Einspritzdüsen gegen die weniger gut zu beherrschenden Injektoren mit integriertem Magnetventil ausgetauscht werden können, die diesen in der Beherrschbarkeit, Preis und Durchflußkonstanz über ihre Lebensdauer sowie in Ihrer Verfügbarkeit weit überlegen sind.Another advantage is that tried and tested injectors against the less well dominant injectors with integrated solenoid valve can be replaced, these in terms of manageability, price and constant flow over their lifetime and are far superior in their availability.

Weitere bevorzugte Ausführungsformen des Gegenstandes der Erfindung ergeben sich aus und in Kombination mit den weiteren Unteransprüchen.Further preferred embodiments of the subject matter of the invention result from and in combination with the other subclaims.

Gemäß einer besonders bevorzugten Ausführungsform sind die Magnetventile unmittelbar an der gemeinsamen Hochdruckleitung (Common-Rail) angeordnet, so daß keine separaten Zuleitungen zu den Magnetventilen erforderlich sind und diese gemeinsam mit dem Common-Rail am Motor befestigbar sind.According to a particularly preferred embodiment, the solenoid valves are immediate arranged on the common high-pressure line (common rail), so that no separate Supply lines to the solenoid valves are required and this together with the Common Rail can be attached to the engine.

Als Einspritzdüsen können bevorzugt solche mit Ein- oder Zweifeder-Haltertechnik verwendet werden, die gegenüber den bekannten Injektoren einen bedeutenden Preisvorteil besitzen. Zusätzlich kann eine solche Düse mit einem Nadelbewegungsfühler oder einem Nadelhubgeber ausgestattet sein. Those with one or two spring holder technology can preferably be used as injection nozzles be a significant price advantage over the known injectors have. In addition, such a nozzle can be equipped with a needle motion sensor or a Needle stroke encoder be equipped.

Mit der vorliegenden Erfindung, lassen sich somit ohne weitere technische Maßnahmen in konstruktiv einfacher Weise Drucksteigerungen erzielen, mit denen Spitzendrücke erreichbar sind, die bei Vermeidung dessen begrenzten Flexibilität bei der Voreinspritzung denen eines Pumpe-Düse-Systems vergleichbar sind.With the present invention, can thus in without further technical measures constructively simple way to achieve pressure increases with which peak pressures can be achieved are, while avoiding its limited flexibility in pre-injection are comparable to those of a pump-nozzle system.

Nachfolgend wird eine solche erfindungsgemäße Kraftstoffeinspritzvorrichtung anhand einer Zeichnung näher beschrieben. Es zeigt die Figur 1 eine schematische Darstellung einer Kraftstoffeinspritzvorrichtung mit am Common Rail angeordneten Magnetventilen zur Steuerung des Durchflusses zu den einzelnen Einspritzdüsen.Such a fuel injection device according to the invention is described below a drawing described in more detail. 1 shows a schematic representation a fuel injection device with solenoid valves arranged on the common rail Control of the flow to the individual injectors.

Die Kraftstoffeinspritzvorrichtung besteht aus einer gemeinsamen Hochdruckleitung 1 (Common-Rail), die mittels einer Hochdruckpumpe 2 aus einem Tank 9 mit unter hohem Druck (ca. 1350 bar) stehenden Kraftstoff befüllt wird. Von der Hochdruckleitung 1 führen der Anzahl der zu versorgenden Zylinder entsprechend mehrere Einspritzleitungen 4 ab, die jeweils an eine in einen Zylinderbrennraum des Motors 6 ragende Einspritzdüse 5 münden. Zur Steuerung der Kraftstoffhochdruckzufuhr an die Einspritzdüsen 5 sind desweiteren jeweils ein Magnetventil 3 in die Einspritzleitungen 4, entfernt von den Einspritzdüsen 5, vorzugsweise direkt an der Hochdruckleitung 1 eingesetzt.The fuel injection device consists of a common high-pressure line 1 (Common-Rail), which uses a high-pressure pump 2 from a tank 9 with under high Pressure (approx. 1350 bar) standing fuel is filled. Lead from high pressure line 1 a plurality of injection lines 4 corresponding to the number of cylinders to be supplied, the injection nozzle 5 projecting into a cylinder combustion chamber of the engine 6 flow out. To control the supply of high-pressure fuel to the injection nozzles 5 are furthermore one solenoid valve 3 each in the injection lines 4, away from the injection nozzles 5, preferably used directly on the high pressure line 1.

Die Geometrie der Einspritzleitungen 4 zwischen dem Magnetventil 3 und der Einspritzdüse 5 ist dabei in Länge, Durchmesser und räumlicher Verlegung im Motorraum so vorherbestimmt, daß ein großer Teil des Einspritzdruckes an der Einspritzdüse 5 durch Reflexionen von Kraftstoff-Druckwellen zwischen dem Magnetventil 3 und der Einspritzdüse 5 beim schlagartigen Einströmen von Kraftstoff in die Einspritzleitung 4 über das Magnetventil 3 erzeugt wird.The geometry of the injection lines 4 between the solenoid valve 3 and the injection nozzle 5 is predetermined in length, diameter and spatial layout in the engine compartment, that a large part of the injection pressure at the injector 5 due to reflections of fuel pressure waves between the solenoid valve 3 and the injection nozzle 5 when fuel suddenly flows into the injection line 4 via the solenoid valve 3 is generated.

An der gemeinsam Hochdruckleitung 1 ist desweiteren ein Sicherheitsventil 7 angeordnet, welches einen Öffnungsquerschnitt in eine Rücklaufleitung 8 für überschüssigen Kraftstoff auf - bzw. zusteuert.A safety valve 7 is also arranged on the common high-pressure line 1, which has an opening cross section in a return line 8 for excess fuel on or heading.

Claims (4)

Kraftstoffeinspritzvorrichtung für Verbrennungskraftmaschinen mit einer von einer Kraftstoff-Hochdruckpumpe (2) befüllbaren gemeinsamen Kraftstoff-Hochdruckleitung (1) (Common Rail), von der eine Vielzahl von Einspritzleitungen (4) zu den einzelnen, den Zylindern der Verbrennungskraftmaschine zugeordneten Injektoren abführen und mit Magnetventilen (3) zur Steuerung der Kraftstoffeinspritzung der einzelnen Injektoren, dadurch gekennzeichnet, daß das Magnetventil (3) entfernt vom Injektor in der Einspritzleitung (4) angeordnet, der Injektor als Einspritzdüse (5) ausgebildet und die Einspritzleitung (4) zwischen Magnetventil (3) und Einspritzdüse (5) derart ausgebildet ist, daß über Druckschwingungen in einer in der Einspritzleitung (4) befindlichen Kraftstoffsäule das Druckniveau an der Einspritzdüse (5) gegenüber dem in der gemeinsamen Hochdruckleitung (1) (Common-Rail) befindlichen Druckniveau im Einspritzzeitraum überhöhbar ist.Fuel injection device for internal combustion engines with one of one High-pressure fuel pump (2) fillable common high-pressure fuel line (1) (Common Rail), from which a large number of injection lines (4) to the individual, discharge the injectors assigned to the cylinders of the internal combustion engine and with solenoid valves (3) for controlling the fuel injection of the individual injectors, characterized in that the solenoid valve (3) away from the injector in the Injection line (4) arranged, the injector as an injection nozzle (5) and the Injection line (4) between the solenoid valve (3) and the injection nozzle (5) is designed in this way is that about pressure fluctuations in a fuel column located in the injection line (4) the pressure level at the injection nozzle (5) compared to that in the common High pressure line (1) (common rail) pressure level in the injection period is inflatable. Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Magnetventile (3) unmittelbar an der gemeinsamen Hochdruckleitung (1) (Common-Rail) angeordnet sind.Fuel injection device according to claim 1, characterized in that the solenoid valves (3) directly on the common high-pressure line (1) (common rail) are arranged. Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, die Einspritzdüsen (5) in Einfeder- oder Zweifeder-Halter eingesetzt sind.Fuel injection device according to claim 1, characterized in that the injection nozzles (5) are used in single or double spring holders. Kraftstoffeinspritzvorrichtung nach Anspruch (3) dadurch gekennzeichnet, daß die Einspritzdüsen (5) mit einem Nadelbewegungsfühler oder Nadelhubgeber ausgestattet sind.Fuel injection device according to claim (3), characterized in that the Injection nozzles (5) equipped with a needle motion sensor or needle stroke encoder are.
EP00105302A 1999-04-29 2000-03-15 Fuel injection device Expired - Lifetime EP1048843B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919665A DE19919665A1 (en) 1999-04-29 1999-04-29 Fuel injector
DE19919665 1999-04-29

Publications (3)

Publication Number Publication Date
EP1048843A2 true EP1048843A2 (en) 2000-11-02
EP1048843A3 EP1048843A3 (en) 2004-09-22
EP1048843B1 EP1048843B1 (en) 2006-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105302A Expired - Lifetime EP1048843B1 (en) 1999-04-29 2000-03-15 Fuel injection device

Country Status (3)

Country Link
EP (1) EP1048843B1 (en)
AT (1) ATE338209T1 (en)
DE (2) DE19919665A1 (en)

Cited By (1)

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US20150316015A1 (en) * 2014-04-30 2015-11-05 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine

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DE10057683B4 (en) * 2000-11-21 2005-10-06 Robert Bosch Gmbh Fuel injection system
DE10148824A1 (en) * 2001-10-04 2003-04-10 Bosch Gmbh Robert Fuel injection valve for IC engine, has characteristic oscillation frequency of supplied fuel matched to valve closure intervals
DE10343003A1 (en) * 2003-09-17 2005-04-14 Boehringer Werkzeugmaschinen Gmbh Machine tool for machining workpieces, has board, spindle stock for receiving and driving workpiece, and tool support which supports drilling-cutting head with first tool holder for driven tool and has second tool holder for non-driven tool
DE102012017186A1 (en) * 2012-08-30 2014-03-06 Wieland-Werke Ag Mask for a coating system, coating system and method of making a coated substrate

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DE19548279A1 (en) 1995-09-28 1997-04-03 Bosch Gmbh Robert Method and device for monitoring a fuel metering system

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DE4106015A1 (en) * 1991-02-26 1992-08-27 Ficht Gmbh PUSHBULE FUEL INJECTION FOR COMBUSTION ENGINES
DE4304967A1 (en) * 1992-04-25 1993-10-28 Bosch Gmbh Robert Fuel injection unit for IC engine with high pressure pump - drawing fuel via filling valve to pump working chamber defined by pump piston and delivers by valve at high pressure to HP storage
DE4341543A1 (en) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Fuel injection device for internal combustion engines
GB9411345D0 (en) * 1994-06-07 1994-07-27 Lucas Ind Plc Fuel supply system
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DE19548279A1 (en) 1995-09-28 1997-04-03 Bosch Gmbh Robert Method and device for monitoring a fuel metering system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150316015A1 (en) * 2014-04-30 2015-11-05 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine
US9494118B2 (en) * 2014-04-30 2016-11-15 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine

Also Published As

Publication number Publication date
DE50013369D1 (en) 2006-10-12
ATE338209T1 (en) 2006-09-15
DE19919665A1 (en) 2000-11-02
EP1048843B1 (en) 2006-08-30
EP1048843A3 (en) 2004-09-22

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