EP2329128A1 - Common rail (cr) diesel fuel injection system - Google Patents

Common rail (cr) diesel fuel injection system

Info

Publication number
EP2329128A1
EP2329128A1 EP09776724A EP09776724A EP2329128A1 EP 2329128 A1 EP2329128 A1 EP 2329128A1 EP 09776724 A EP09776724 A EP 09776724A EP 09776724 A EP09776724 A EP 09776724A EP 2329128 A1 EP2329128 A1 EP 2329128A1
Authority
EP
European Patent Office
Prior art keywords
pressure
injection system
injectors
injection
fuel
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
EP09776724A
Other languages
German (de)
French (fr)
Other versions
EP2329128B1 (en
Inventor
Erich Eder
Simon Thierfelder
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.)
Motorenfabrik Hatz GmbH and Co KG
Original Assignee
Motorenfabrik Hatz GmbH and Co KG
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 Motorenfabrik Hatz GmbH and Co KG filed Critical Motorenfabrik Hatz GmbH and Co KG
Publication of EP2329128A1 publication Critical patent/EP2329128A1/en
Application granted granted Critical
Publication of EP2329128B1 publication Critical patent/EP2329128B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails
    • F02M63/027—More than one high pressure pump feeding a single common rail

Definitions

  • the invention relates to an injection system for diesel fuel via a common rail (CR) and injectors for the operation of diesel engines with a power ⁇ 37 kW, which manage with an injection pressure up to 800 bar.
  • CR common rail
  • a known injection system of the CR type is described in EP 1387079 Al. It has a high-pressure pump, which supplies a rail with fuel via a flow rate control, to which injectors for supplying the individual cylinders of the engine with fuel are connected.
  • the high-pressure pump is supplied via a low-pressure pump, which draws fuel from a tank and delivers it to the high-pressure pump via a pressure relief valve.
  • the pressure in the rail is regulated by means of an electronic control unit.
  • Such CR systems have elaborate solenoid valve controlled injectors for diesel engines which are each connected to the tank via bleed lines, i. by the CR system a much larger amount of fuel is to promote beyond the required injection quantity, wherein the total amount delivered may be four to five times the amount required by the engine.
  • the object of the present invention is to provide a simple-to-produce CR system for diesel engines with low power, which in particular works with small leaks and in which at low cost commercially available components can be used.
  • mini-HD pumps for pressures up to 800 bar, which are extremely inexpensive as so-called monobloc pumps or PF pumps available in stores. These are uncontrolled piston pumps of the simplest kind.
  • the further feature that the pressure in the rail is controlled on the pressure side by means of an ECU via a DRV, an ideal embodiment, which contributes to further simplification, by making it possible to use simple, known per se components to the rail pressure according to the map control, as a result of the pressure-side Quiltnab interviewedung the diverted fuel is conveyed back in a simple manner via a fuel return line in the tank.
  • the injection of fuel by the injectors is also controlled by the ECU, with their magnet arrangements for powering the nozzle needle being energized accordingly, e.g. under realization of a pre, main and post injection per stroke of a cylinder.
  • Two monobloc pumps of this type supply a rail 2.
  • the motor-driven pumps 1 are actuated via their roller tappets 14 by a camshaft (not shown).
  • the monoblock pumps 1 convey into the rail 2 a constant amount, the excess amount is diverted and returned via a fuel return line 12 to the tank.
  • the stored in an electronic control unit 4 in the map injection pressure is set by the pressure-side flow control via a DRV 6.
  • the diverted fuel passes through the fuel return line 12 back into the tank 7.
  • the injectors 3 are connected according to the number of engine cylinders via high pressure lines 11 to the rail.
  • Each injector 3 is energized via a line 16 from the ECU according to the map.
  • Via a line 17, the ECU is connected to a pressure control valve 6, which discharges from the rail 2 on the pressure side that amount which corresponds to the respective given rail pressure.
  • Another line 18 connects the ECU 4 with a pressure sensor 5, which is also connected to the rail 2.
  • a fuel pump 8 an electric diaphragm pump or a conventional piston pump is suitable.
  • the monobloc pumps 1 are supplied, which compress the fuel and over a pump-mounted check valve and a high-pressure line 10 to the rail 2 supplies.

Landscapes

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

Abstract

The invention relates to a common rail (CR) diesel fuel injection system and injectors (3) for operating small diesel engines which only require an injection pressure of up to 800 bar. Uncontrolled tappet-actuated monoblock pumps (1) are used for the CR supply, injectors (3) suitable for leakage-free direct injection are used, and the pressure in the rail (2) is controlled on the pressure side via a pressure control valve (DRV) by means of an electronic control unit (ECU).

Description

Einspritzsystem für Dieselkraftstoff über ein Common Rail (CR) Injection system for diesel fuel via a Common Rail (CR)
Die Erfindung betrifft ein Einspritzsystem für Dieselkraftstoff über ein Common Rail (CR) und Injektoren zum Betrieb von Dieselmotoren mit einer Leistung < 37 kW, welche mit einem Einspritzdruck bis 800 bar auskommen.The invention relates to an injection system for diesel fuel via a common rail (CR) and injectors for the operation of diesel engines with a power <37 kW, which manage with an injection pressure up to 800 bar.
Ein bekanntes Einspritzsystem des CR-Typs ist in EP 1387079 Al beschrieben. Es besitzt eine Hochdruckpumpe, welche über eine Durchflussmengensteuerung ein Rail mit Kraftstoff versorgt, an welches Injektoren zum Versorgen der einzelnen Zylinder des Motors mit Kraftstoff angeschlossen sind. Die Hochdruckpumpe wird versorgt über eine Niederdruckpumpe, welche Kraftstoff aus einem Tank ansaugt und über ein Überdruckventil an die Hochdruckpumpe liefert. Der Druck im Rail wird mittels einer elektronischen Steuereinheit geregelt.A known injection system of the CR type is described in EP 1387079 Al. It has a high-pressure pump, which supplies a rail with fuel via a flow rate control, to which injectors for supplying the individual cylinders of the engine with fuel are connected. The high-pressure pump is supplied via a low-pressure pump, which draws fuel from a tank and delivers it to the high-pressure pump via a pressure relief valve. The pressure in the rail is regulated by means of an electronic control unit.
Derartige CR-Systeme besitzen für Dieselmotoren aufwendige magnetventilgesteuerte Injektoren, welche jeweils über Leckölleitungen mit dem Tank verbunden sind, d.h. durch das CR-System ist über die benötigte Einspritzmenge hinaus eine wesentlich größere Kraftstoffmenge zu fördern, wobei die insgesamt geförderte Menge das Vier- bis Fünffache der vom Motor benötigten Menge betragen kann.Such CR systems have elaborate solenoid valve controlled injectors for diesel engines which are each connected to the tank via bleed lines, i. by the CR system a much larger amount of fuel is to promote beyond the required injection quantity, wherein the total amount delivered may be four to five times the amount required by the engine.
Bei den bekannten CR-Systemen für Dieselmotoren kommen sehr hohe Einspritzdrücke in Frage, die für den Betrieb von Kleindieselmotoren nicht benötigt werden. Gerade für solche Motoren ist daher der Betrieb des Rails mit druckseitiger Absteuerung besonders aufwendig, denn auch für kleine Motorleistungen benötigt ein solches CR-System einen hohen Energieaufwand zur Gewährleistung hoher Drücke und Durchsatzmengen .In the known CR systems for diesel engines are very high injection pressures in question, which does not need for the operation of small diesel engines become. Especially for such engines, therefore, the operation of the rail with pressure-side control is particularly expensive, because even for small engine power such a CR system requires a lot of energy to ensure high pressures and flow rates.
Demgegenüber besteht die Aufgabe der vorliegenden Erfindung darin, ein mit einfachen Mitteln herzustellendes CR-System für Dieselmotoren mit kleinen Leistungen zu schaffen, welches insbesondere mit kleinen Leckagen arbeitet und bei dem zu günstigen Bedingungen im Handel erhältliche Bauelemente einsetzbar sind.In contrast, the object of the present invention is to provide a simple-to-produce CR system for diesel engines with low power, which in particular works with small leaks and in which at low cost commercially available components can be used.
Diese Aufgabe wird erfindungsgemäß gemäß dem Kennzeichen von Anspruch 1 gelöst .This object is achieved according to the invention of the characterizing part of claim 1.
Dabei genügen sogenannte Mini -HD-Pumpen für Drücke bis zu 800 bar, welche äußerst kostengünstig als sogenannte Monoblockpumpen oder PF- Pumpen im Handel erhältlich sind. Dabei handelt es sich um ungeregelte Kolbenpumpen der einfachsten Art .It is sufficient so-called mini-HD pumps for pressures up to 800 bar, which are extremely inexpensive as so-called monobloc pumps or PF pumps available in stores. These are uncontrolled piston pumps of the simplest kind.
Ferner kommen sogenannte Low-cost- Injektoren in Frage, wie sie als direkt einspritzende Injektoren für Ottomotoren zur Verfügung stehen.Furthermore, so-called low-cost injectors come into question, as they are available as directly injecting injectors for gasoline engines.
Da für Kleindieselmotoren mit einem Hubraum < 500 ccm bzw. unter einem Leistungsbereich von 37 kW bei Drücken unter 800 bar Partikelgrenzwerte im Rahmen zulässiger Emissionen erreichbar sind - PM < 0,3 g/kWh und NOx + HC < 7,5 g/kW - stellt der erfindungsgemäß aufgezeigte Lösungsweg nicht nur ein e- missionsgerechtes, sondern auch ein extrem kosten- günstiges Einspritzsystem für Dieselmotoren kleiner Leistungen dar.Since small diesel engines with a displacement of <500 cc or under a power range of 37 kW at pressures below 800 bar can achieve particle limits within permissible emissions - PM <0.3 g / kWh and NOx + HC <7.5 g / kW - the solution presented according to the invention not only provides an emission-appropriate but also an extremely cost-effective solution. favorable injection system for diesel engines of low power.
Dabei stellt das weitere Merkmal, dass der Druck im Rail mittels einer ECU über ein DRV druckseitig abgesteuert wird, eine ideale Ausgestaltung dar, die zur weiteren Vereinfachung beiträgt, indem sie es ermöglicht, mittels einfacher, an sich bekannter Bauteile den Raildruck entsprechend dem Kennfeld zu steuern, wobei als Folge der druckseitigen Mengenabsteuerung der abgesteuerte Kraftstoff auf einfache Weise über eine Kraftstoffrücklaufleitung in den Tank zurückgefördert wird.In this case, the further feature that the pressure in the rail is controlled on the pressure side by means of an ECU via a DRV, an ideal embodiment, which contributes to further simplification, by making it possible to use simple, known per se components to the rail pressure according to the map control, as a result of the pressure-side Mengenabsteuerung the diverted fuel is conveyed back in a simple manner via a fuel return line in the tank.
Die Kraftstoffeinspritzung durch die Injektoren wird ebenfalls über die ECU gesteuert, wobei deren Magnetanordnungen zur Betätigung der Düsennadel entsprechend bestromt werden, z.B. unter Verwirklichung einer Vor-, Haupt- und Nacheinspritzung je Arbeitshub eines Zylinders.The injection of fuel by the injectors is also controlled by the ECU, with their magnet arrangements for powering the nozzle needle being energized accordingly, e.g. under realization of a pre, main and post injection per stroke of a cylinder.
Durch den Einsatz der bei Ottomotoren bekannten GDIs, bei denen die Düsennadel am Anker einer Magnetanordnung befestigt ist, entfallen hydraulische Leckagen, wie sie bei üblichen CR-Systemen für Dieselmotoren in Kauf zu nehmen sind. Das erfindungsgemäße CR-System arbeitet daher besonders effektiv und sparsam.Through the use of known in gasoline engines GDIs, in which the nozzle needle is attached to the armature of a magnet assembly, eliminating hydraulic leaks, as they are to be taken in conventional CR systems for diesel engines in purchasing. The CR system according to the invention therefore works particularly effectively and economically.
Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben.In the following an embodiment of the invention will be described with reference to the drawing.
Diese zeigt eine Monoblockpumpe 1 in Form einer einfachen Stempelpumpe, welche in Abstimmung auf die jeweilige Motorgröße gewählt wird. Zwei derartige Monoblockpumpen versorgen ein Rail 2. Die Mo- noblockpυmpen 1 werden über deren Rollenstößel 14 von einer nicht gezeichneten Nockenwelle betätigt.This shows a monoblock pump 1 in the form of a simple stamping pump, which in coordination the respective motor size is selected. Two monobloc pumps of this type supply a rail 2. The motor-driven pumps 1 are actuated via their roller tappets 14 by a camshaft (not shown).
Die Monoblockpumpen 1 fördern in das Rail 2 eine konstante Menge, die Überschussmenge wird abgesteuert und über eine Kraftstoffrücklaufleitung 12 zum Tank zurückgeführt .The monoblock pumps 1 convey into the rail 2 a constant amount, the excess amount is diverted and returned via a fuel return line 12 to the tank.
Der in einer elektronischen Steuereinheit 4 im Kennfeld hinterlegte Einspritzdruck wird durch die druckseitige Mengensteuerung über ein DRV 6 eingestellt. Der abgesteuerte Kraftstoff gelangt über die Kraftstoffrücklaufleitung 12 zurück in den Tank 7. Die Injektoren 3 sind entsprechend der Zahl der Motorzylinder über Hochdruckleitungen 11 mit dem Rail verbunden. Jeder Injektor 3 wird über eine Leitung 16 aus der ECU entsprechend dem Kennfeld bestromt . Über eine Leitung 17 ist die ECU mit einem Druckregelventil 6 verbunden, welches aus dem Rail 2 druckseitig diejenige Menge absteuert, die dem jeweils vorgebenen Raildruck entspricht. Eine weitere Leitung 18 verbindet die ECU 4 mit einem Drucksensor 5, welcher ebenfalls am Rail 2 angeschlossen ist .The stored in an electronic control unit 4 in the map injection pressure is set by the pressure-side flow control via a DRV 6. The diverted fuel passes through the fuel return line 12 back into the tank 7. The injectors 3 are connected according to the number of engine cylinders via high pressure lines 11 to the rail. Each injector 3 is energized via a line 16 from the ECU according to the map. Via a line 17, the ECU is connected to a pressure control valve 6, which discharges from the rail 2 on the pressure side that amount which corresponds to the respective given rail pressure. Another line 18 connects the ECU 4 with a pressure sensor 5, which is also connected to the rail 2.
Die Zuförderung des Kraftstoffs zu den Monoblockpumpen 1 erfolgt über eine Förderpumpe 8 aus dem Tank 7 über eine KraftstoffZulaufleitung 13, in welche ein Kraftstofffilter 9 eingebaut ist. Als Kraftstoffpumpe 8 eignet sich eine elektrische Membranpumpe oder eine übliche Kolbenpumpe. Über die Förderpumpe 8 werden die Monoblockpumpen 1 versorgt, welche den Kraftstoff verdichten und über ein pumpenseitig eingebautes Rückschlagventil und eine Hochdruckleitung 10 dem Rail 2 zuführt. The delivery of the fuel to the monoblock pumps 1 via a feed pump 8 from the tank 7 via a fuel supply line 13, in which a fuel filter 9 is installed. As fuel pump 8, an electric diaphragm pump or a conventional piston pump is suitable. About the feed pump 8, the monobloc pumps 1 are supplied, which compress the fuel and over a pump-mounted check valve and a high-pressure line 10 to the rail 2 supplies.

Claims

Patentansprüche claims
1. Einspritzsystem für Dieselkraftstoff über ein Comtnon Rail (CR) (2) und Injektoren (3) zum Betrieb von Dieselmotoren mit einer Leistung < 37 kW, welche mit einem Einspritzdruck bis etwa 800 bar auskommen, dadurch gekennzeichnet, dass zur CR-Einspeisung ungeregelte stößelbetätigte Monoblockpumpen (1) verwendet werden, dass als Injektoren (3) solche für die leckagefreie Direkteinspritzung verwendet werden, dass der Druck im Rail (2) mittels einer Elektronischen Steuereinheit (4) über ein Druckregelventil (6) druckseitig abgesteuert wird, dass die Elektronsiche Steuereinheit (4) kennfeidprogrammiert ist und dass die Phasen der Kraftstoffeinspritzung durch Bestromung der Injektoren (3) über die Elektronsiche Steuereinheit (4) gesteuert werden .1. Injection system for diesel fuel via a Comtnon Rail (CR) (2) and injectors (3) for the operation of diesel engines with a power <37 kW, which manage with an injection pressure up to about 800 bar, characterized in that the CR feed unregulated Piston-actuated monobloc pumps (1) are used, that are used as injectors (3) for the leak-free direct injection, that the pressure in the rail (2) by means of an electronic control unit (4) via a pressure control valve (6) is pressure-controlled that the Elektronsiche Control unit (4) is kennfeidprogrammiert and that the phases of the fuel injection by energizing the injectors (3) via the electronic control unit (4) are controlled.
2. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass der Hubraum des Dieselmotors weniger als 500 ccm beträgt.2. Injection system according to claim 1, characterized in that the displacement of the diesel engine is less than 500 cc.
3. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass die ECU (4) kennfeidprogrammiert ist. 3. Injection system according to claim 1, characterized in that the ECU (4) is key-code-programmed.
4. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass ein am Rail (2) angeschlossener Drucksensor (5) mit der Elektronischen Steuereinheit (4) kommuniziert.4. Injection system according to claim 1, characterized in that a rail (2) connected to the pressure sensor (5) communicates with the electronic control unit (4).
5. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass die durch das Druckregelventil (6) abgesteuerte Kraftstoffmenge über eine Kraftstoffrücklaufleitung (12) in einen Tank (7) gefördert wird.5. Injection system according to claim 1, characterized in that the by the pressure control valve (6) controlled amount of fuel via a fuel return line (12) is conveyed into a tank (7).
6. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass die Phasen der Kraftstoffeinspritzung durch Bestromung der Injektoren (3) über die Elektronische Steuereinheit (4) gesteuert werden .6. Injection system according to claim 1, characterized in that the phases of the fuel injection by energizing the injectors (3) via the electronic control unit (4) are controlled.
7. Einspritzsystem nach Anspruch 1, dadurch gekennzeichnet, dass Injektoren mit jeweils am Anker einer Magnetanordnung befestigter Düsennadel vorgesehen sind. 7. Injection system according to claim 1, characterized in that injectors are provided with each attached to the armature of a magnet assembly nozzle needle.
EP09776724.8A 2008-10-02 2009-06-13 Common rail diesel fuel injection system Active EP2329128B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810050381 DE102008050381B4 (en) 2008-10-02 2008-10-02 Injection system for diesel fuel via a Common Rail (CR)
PCT/EP2009/004273 WO2010037433A1 (en) 2008-10-02 2009-06-13 Common rail (cr) diesel fuel injection system

Publications (2)

Publication Number Publication Date
EP2329128A1 true EP2329128A1 (en) 2011-06-08
EP2329128B1 EP2329128B1 (en) 2014-08-06

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Country Status (3)

Country Link
EP (1) EP2329128B1 (en)
DE (1) DE102008050381B4 (en)
WO (1) WO2010037433A1 (en)

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EP2726716B1 (en) 2011-06-30 2016-11-02 Arens GmbH Metallbau & Bauschlosserei Fuel distributor block

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Publication number Publication date
EP2329128B1 (en) 2014-08-06
WO2010037433A1 (en) 2010-04-08
DE102008050381A1 (en) 2010-04-08
DE102008050381B4 (en) 2014-09-25

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