DE19958565A1 - Fuel supply installation for multi-cylinder internal combustion engine with at least two cylinder ranks has injection valves available for individual cylinders and provided with fuel from common distributor installation using fuel feed pump - Google Patents

Fuel supply installation for multi-cylinder internal combustion engine with at least two cylinder ranks has injection valves available for individual cylinders and provided with fuel from common distributor installation using fuel feed pump

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Publication number
DE19958565A1
DE19958565A1 DE19958565A DE19958565A DE19958565A1 DE 19958565 A1 DE19958565 A1 DE 19958565A1 DE 19958565 A DE19958565 A DE 19958565A DE 19958565 A DE19958565 A DE 19958565A DE 19958565 A1 DE19958565 A1 DE 19958565A1
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DE
Germany
Prior art keywords
fuel
distributor
internal combustion
combustion engine
cylinder
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
DE19958565A
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German (de)
Other versions
DE19958565B4 (en
Inventor
Frank Ickinger
Michael Paul
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.)
Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Priority to DE19958565A priority Critical patent/DE19958565B4/en
Publication of DE19958565A1 publication Critical patent/DE19958565A1/en
Application granted granted Critical
Publication of DE19958565B4 publication Critical patent/DE19958565B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • 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
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • 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
    • F02M55/025—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0041—Means for damping pressure pulsations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

Abstract

The fuel supply installation is for a multi-cylinder internal combustion engine with at least two cylinder ranks (10,12), for the individual cylinders of which injection valves (20) are available. The valves are provided with fuel from a common rail distributor installation (24,25) using a fuel feed pump (26). A supply conduit (32) of the fuel delivery pump leads to a distributor piece (34), which on the outlet side is connected to two inflow conduits (36,38) connected to the common rail distributor installation. The two inflow conduits take approximately 40-70 per cent of the fuel volume with low pressure pulsation necessary for fuel injection, whilst the other part of the fuel is accommodated in the common rail distributor installation and in the injection valves.

Description

Die Erfindung geht aus von einer Kraftstoffversorgungseinrichtung für eine mehrzylindrige Brennkraftmaschine.The invention relates to a fuel supply device for a multi-cylinder Internal combustion engine.

Es ist Stand der Technik (siehe z. Bsp. US-PS 3507263), bei einer mehrzylindrigen Brennkraftmaschine die jeweils in einer Zylinderreihe angeordneten Injektoren über eine gemeinsame Verteilerleiste, ein sogenanntes Common Rail, mit Kraftstoff zu versorgen. Das wesentliche Merkmal des Common Rail-Systems ist, daß der Einspritzdruck unabhängig von der Motordrehzahl und der Einspritzmenge erzeugt und der mittlere Einspritzdruck erhöht werden kann, wobei die Entkopplung von Druckerzeugung und Einspritzung mit Hilfe des Speichervolumens erfolgt. Dieses Volumen setzt sich aus Bestandteilen der gemeinsamen Verteilerleiste (Common Rail) in den Kraftstoff- Zufuhrleitungen und in den Injektoren selbst, zusammen. Die von der Kraftstoffförderpumpe erzeugten Druckpulsationen erfordern im Common Rail ein entsprechendes Speicher-Kraftstoffvolumen, um diese Druckschwankungen entsprechend dämpfen zu können. Die Reduzierung von Druckpulsationen sind Vorraussetzung für eine genau zu einem bestimmten Zeitpunkt in die Zylinder einzuspritzende Kraftstoffmenge.It is state of the art (see e.g. US-PS 3507263) in a multi-cylinder Internal combustion engine the injectors each arranged in a row of cylinders via a common fuel rail to supply fuel. The essential feature of the common rail system is that the injection pressure generated regardless of the engine speed and the injection quantity and the average Injection pressure can be increased, the decoupling of pressure generation and Injection takes place with the help of the storage volume. This volume exposes itself Components of the common rail in the fuel Supply lines and in the injectors themselves, together. The of the Fuel delivery pumps generate pressure pulsations in the common rail appropriate storage fuel volume to match these pressure fluctuations to be able to dampen. The reduction of pressure pulsations are a prerequisite for one amount of fuel to be injected into the cylinders at a specific time.

Aufgabe der Erfindung ist es daher, eine Kraftstoffversorgungseinrichtung für eine mehrzylindrige Brennkraftmaschine bereit zu stellen, bei der einerseits das für die Common Rail - Kraftstoffversorgung notwendige Speichervolumen aufgenommen werden kann, ohne daß die gemeinsame Verteilerleiste (Common Rail) aufgrund des notwendigen Kraftstoffvolumens zu Bauraumproblemen im Zylinderkopfbereich der Brennkraft­ maschine führt.The object of the invention is therefore a fuel supply device for a to provide multi-cylinder internal combustion engine, on the one hand that for the Common Rail - fuel supply necessary storage volume can be added can without the common rail due to the necessary Fuel volume to space problems in the cylinder head area of the internal combustion engine machine leads.

Die Aufgabe wird erfindungsgemäß durch die im Anspruch 1 angegebenen Merkmale gelöst. The object is achieved by the features specified in claim 1 solved.  

Dadurch, daß ca. 40-70% des Kraftstoffvolumens in den beiden Zuleitungen für das Common Rail gespeichert wird, können die Injektoren versorgenden Verteilerleisten in ihren Abmessungen, insbesondere die Innendurchmesser, entsprechend kleiner dimensioniert werden.The fact that about 40-70% of the fuel volume in the two supply lines for the Common Rail is stored, the injectors supplying manifolds in their dimensions, especially the inner diameter, correspondingly smaller be dimensioned.

In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen und Verbesserungen der erfindungsgemäßen Kraftstoffversorgungseinrichtung enthalten.Further advantageous refinements and improvements are in the subclaims contain the fuel supply device according to the invention.

Eine vorteilhafte Entkopplung der von der Kraftstoffförderpumpe erzeugten Druckpulsationen findet über eine in einem Verteilerstück angeordnete Drossel statt.An advantageous decoupling of those generated by the fuel delivery pump Pressure pulsations take place via a throttle arranged in a distributor.

Eine einfache und wirkungsvolle Reduzierung des Leitungsquerschnitts findet statt, wenn die in den beiden Ausgängen des Verteilerstückes angeordnete Drossel als Blende ausgebildet ist.A simple and effective reduction in the line cross section takes place if the throttle arranged in the two outputs of the distributor piece as an orifice is trained.

Eine vorteilhafte Funktionsintegration ergibt sich, wenn die Verteilerleiste und die Injektoren zusammen in einem Ansaugstutzen der Brennkraftmaschine integriert sind.An advantageous function integration results when the distribution strip and the Injectors are integrated together in an intake manifold of the internal combustion engine.

Der für eine mehrzylindrige Brennkraftmaschine mit Benzin-Direkteinspritzung erforderliche Kraftstoffdruck wird mit Hilfe einer Kraftstoffförderpumpe erzeugt, die mit Hilfe der Nockenwelle der Brennkraftmaschine angetrieben wird.The one for a multi-cylinder internal combustion engine with direct petrol injection required fuel pressure is generated with the help of a fuel pump The camshaft of the internal combustion engine is driven.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend näher erläutert.An embodiment of the invention is shown in the drawing and will explained in more detail below.

Fig. 1 zeigt eine schematische Gesamtdarstellung der Kraftstoffversorgungseinrichtung, Fig. 1 shows an overall schematic representation of the fuel supply device,

Fig. 2 eine Seitenansicht, Fig. 3 eine Draufsicht auf zwei Kraftstoff-Zulaufleitungen, die über ein Verteilerstück miteinander verbunden sind, und Fig. 4 eine Schnittdarstellung entlang der Linie IV-IV in Fig. 3. FIG. 2 shows a side view, FIG. 3 shows a top view of two fuel supply lines which are connected to one another via a distributor piece, and FIG. 4 shows a sectional illustration along the line IV-IV in FIG. 3.

Beschreibung des AusführungsbeispielsDescription of the embodiment

An den beiden in Fig. 1 dargestellten Zylinderreihen 10 und 12 einer sechszylindrigen Brennkraftmaschine sind jeweils als Gußteile ausgebildete Ansaugstutzen 14, 16 angeflanscht. Die Ansaugstutzen 14, 16 sind wiederum mit einer nicht dargestellten Ansauganlage für Verbrennungsluft verbunden, wobei die einzelnen Kanäle der Ansauganlage mit den in den Ansaugstutzen 14, 16 angeordneten Einlaßöffnungen 18 korrespondieren. In den beiden Ansaugstutzen 14, 16 werden die für die Kraftstoffzufuhr in die Brennräume vorgesehenen Einspritzventile 20 gehalten, wobei die Enden der Düsen 22 nach dem Prinzip der Benzin-Direkteinspritzung direkt in den Brennraum der Brennkraftmaschine führen. Die Einspritzventile 20 beider Zylinderreihen 10, 12 sind über jeweils eine gemeinsame Kraftstoff-Verteilerleiste 24, 25, dem sogenannten Common Rail verbunden.On the two cylinder rows 10 and 12 of a six-cylinder internal combustion engine shown in FIG. 1, intake manifolds 14 , 16 are each flanged as castings. The intake ports 14 , 16 are in turn connected to an intake system, not shown, for combustion air, the individual channels of the intake system corresponding to the inlet openings 18 arranged in the intake ports 14 , 16 . The injection valves 20 provided for the fuel supply to the combustion chambers are held in the two intake ports 14 , 16 , the ends of the nozzles 22 leading directly into the combustion chamber of the internal combustion engine according to the principle of direct petrol injection. The injection valves 20 of both cylinder banks 10 , 12 are each connected via a common fuel rail 24 , 25 , the so-called common rail.

Der für die Benzindirekteinspritzung erforderliche Kraftstoffdruck wird mit Hilfe einer am Ansaugstutzen 16 angeordneten Kraftstoffförderpumpe 26 erzeugt. Der im Inneren der Kraftstoffförderpumpe 26 angeordnete Hubkolben wird über die nicht dargestellte Einlaßnockenwelle der Zylinderreihe 12 angetrieben. An der Kraftstoffförderpumpe 26 ist weiterhin ein Mengensteuerventil 28, ein Eingangsstutzen 30 für die zum Kraftstofftank führende Leitung, sowie ausgangsseitig eine Kraftstoff-Versorgungsleitung 32 angeordnet, die zu einem T-Verteilerstück 34 führt. An der Kraftstoffförderpumpe 26 ist darüberhinaus unterhalb des Mengensteuerventils 28 ein Anschlußstutzen 36 für eine zum Kraftstofftank zurückführende Leckage-Leitung vorgesehen. Von den beiden Ausgangsseiten des T-Verteilerstücks 34 führen zwei Zulaufleitungen 36, 38 zu den beiden Verteilerleisten 24, 25 der Zylinderreihen 10 und 12. Die Anschlußenden 40, 42 der beiden Zulaufleitungen 36, 38 sind mit den beiden Ansaugstutzen 14, 16 verschraubt, wobei die Einschrauböffnungen über in den Ansaugstutzen 14, 16 vorgesehene Bohrungen (nicht sichtbar) zu den Kanälen der beiden Verteilerleisten 24, 25 führen. The fuel pressure required for gasoline direct injection is generated with the aid of a fuel feed pump 26 arranged on the intake manifold 16 . The reciprocating piston arranged in the interior of the fuel delivery pump 26 is driven via the intake camshaft of the cylinder bank 12, which is not shown. A quantity control valve 28 , an inlet connection 30 for the line leading to the fuel tank, and a fuel supply line 32 on the outlet side, which leads to a T-distributor 34 , are also arranged on the fuel feed pump 26 . A connection piece 36 for a leakage line leading back to the fuel tank is also provided on the fuel feed pump 26 below the quantity control valve 28 . Two inlet lines 36 , 38 lead from the two outlet sides of the T distributor piece 34 to the two distributor strips 24 , 25 of the cylinder rows 10 and 12 . The connection ends 40 , 42 of the two inlet lines 36 , 38 are screwed to the two intake ports 14 , 16 , the screw openings leading through holes provided in the intake ports 14 , 16 (not visible) to the channels of the two distributor strips 24 , 25 .

Das in der Fig. 4 als Schnittdarstellung näher dargestellte T-Verteilerstück 34 weist eingangsseitig die mit Hilfe einer Überwurfschraube 44 befestigte Versorgungsleitung 32 auf, während an den Ausgängen des T-Verteilerstücks 34 die beiden Kraftstoff- Zulaufleitungen 36 und 38 mit Hilfe von zwei Überwurfmuttern 46, 48 und zwei Zwischenstück-Verschraubungen 50, 52 befestigt sind. Im T-Verteilerstück 34 sind weiterhin zwei Drosselscheiben 54, 56 angeordnet, die mit Hilfe von zwei Fixierschrauben 58, 60 so ausgerichtet sind, daß die Drosselöffnungen mit der Längsachse der beiden Ausgänge des T Verteilerstücks 34 und damit mit der Längsachse der beiden Zulaufleitungen 36, 38 fluchten. Der sich zwischen den beiden Drosselscheiben 54, 56 ausbildende Zwischenraum 61, sowie die beiden in Strömungsrichtung des Kraftstoffs gesehen hinter den Drosselscheiben 54, 56 angeordneten Räume können mit Hilfe eines Ventils 62 über entsprechende Leitungen 63 entlüftet werden.The T-distributor piece 34 shown in more detail in FIG. 4 has on the input side the supply line 32 fastened with the aid of a union screw 44 , while at the outputs of the T-distributor piece 34 the two fuel supply lines 36 and 38 are used with the aid of two union nuts 46 , 48 and two adapter screw connections 50 , 52 are fastened. In the T-distributor piece 34 two throttle disks 54 , 56 are further arranged, which are aligned with the aid of two fixing screws 58 , 60 so that the throttle openings with the longitudinal axis of the two outputs of the T-distributor piece 34 and thus with the longitudinal axis of the two inlet lines 36 , 38 are cursed. The space 61 formed between the two throttle disks 54 , 56 , and the two spaces arranged behind the throttle disks 54 , 56 , viewed in the direction of flow of the fuel, can be vented with the aid of a valve 62 via corresponding lines 63 .

Um das pro Zylinderreihe vorgesehene Kraftstoffvolumen von ca. 150 cm3 speichern zu können, ohne dabei den Innendurchmesser der Kraftstoffverteilerleisten 24, 25 auf bauraumungünstige Maße erweitern zu müssen, werden die beiden Kraftstoff- Zulaufleitungen 36, 38 so dimensioniert, daß pro Zylinderreihe ca. 70 cm3 Kraftstoff in den Verteilerleisten 24, 25 und ca. 80 cm3 Kraftstoff in den Zulaufleitungen 36,38 Aufnahme findet. Die Zulaufleitungen 36, 38 können dabei so angeordnet werden, daß eine kompakte und platzsparende Bauweise der als Sechszylinder-Boxermotor ausgebildeten Brennkraftmaschine möglich wird.In order to be able to store the fuel volume of approx. 150 cm 3 provided for each row of cylinders without having to expand the inside diameter of the fuel distributor strips 24 , 25 to dimensions that are unfavorable for installation space, the two fuel supply lines 36 , 38 are dimensioned such that approx. 70 per row of cylinders cm 3 of fuel in the distributor strips 24 , 25 and approx. 80 cm 3 of fuel in the inlet lines 36 , 38 is accommodated. The feed lines 36 , 38 can be arranged so that a compact and space-saving design of the internal combustion engine designed as a six-cylinder boxer engine is possible.

Durch das in den Zulaufleitungen 36, 38 und in den Kraftstoff-Verteilerleisten 24, 25 gespeicherte Kraftstoffvolumen werden die von der Kraftstoffförderpumpe 26 erzeugten Druckpulsationen wirkungsvoll gedämpft. Die beiden im T-Verteilerstück 34 angeordneten Drosselscheiben 54, 56 tragen zu einer weiteren Entkoppelung bzw. Dämpfung der Druckpulsationen bei.The pressure pulsations generated by the fuel delivery pump 26 are effectively damped by the fuel volume stored in the feed lines 36 , 38 and in the fuel rail 24 , 25 . The two throttle disks 54 , 56 arranged in the T distributor piece 34 contribute to a further decoupling or damping of the pressure pulsations.

Claims (5)

1. Kraftstoffversorgungseinrichtung für eine mehrzylindrige Brennkraftmaschine mit
  • - mindestens zwei Zylinderreihen (10, 12), denen den einzelnen Zylindern Einspritzventile (20) zugeordnet sind,
  • - die Einspritzventile (20) werden pro Zylinderreihe (10, 12) über jeweils eine gemeinsame Verteilerleiste (24, 25) mit Kraftstoff aus einer Kraftstoffförderpumpe (26) versorgt,
  • - eine Versorgungsleitung (32) der Kraftstoffförderpumpe (26) führt zu einem Verteilerstück (34), das ausgangsseitig mit zwei Zulaufleitungen (36, 38) verbunden ist, die an den Verteilerleisten (24, 25) angeschlossen sind,
  • - die beiden Zulaufleitungen (36, 38) nehmen jeweils ca. 40-70% des für eine Kraftstoffeinspritzung mit geringer Druckpulsation erforderlichen Kraftstoffvolumens auf, während der andere Teil des Kraftstoffs in den Verteilerleisten (24, 25) und in den Einspritzventilen (20) Aufnahme findet.
1. Fuel supply device for a multi-cylinder internal combustion engine
  • - at least two rows of cylinders ( 10 , 12 ), to which the individual cylinders are assigned injection valves ( 20 ),
  • the fuel injectors ( 20 ) are supplied with fuel from a fuel feed pump ( 26 ) for each row of cylinders ( 10 , 12 ) via a common distributor rail ( 24 , 25 ),
  • a supply line ( 32 ) of the fuel feed pump ( 26 ) leads to a distributor ( 34 ) which is connected on the outlet side to two inlet lines ( 36 , 38 ) which are connected to the distributor strips ( 24 , 25 ),
  • - The two feed lines ( 36 , 38 ) each take up approximately 40-70% of the fuel volume required for a fuel injection with low pressure pulsation, while the other part of the fuel in the distributor strips ( 24 , 25 ) and in the injection valves ( 20 ) intake finds.
2. Kraftstoffversorgungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß im Verteilerstück (34) mindestens eine Drossel (54, 56) zur Reduzierung der von der Kraftstoffförderpumpe (26) erzeugten Druckpulsationen vorgesehen ist.2. Fuel supply device according to claim 1, characterized in that in the distributor piece ( 34 ) at least one throttle ( 54 , 56 ) is provided to reduce the pressure pulsations generated by the fuel feed pump ( 26 ). 3. Kraftstoffversorgungseinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß im Verteilerstück (34) in den zu den beiden Zulaufleitungen (36, 38) führenden Ausgängen jeweils eine Drosselscheibe (54, 56) angeordnet ist.3. Fuel supply device according to claim 2, characterized in that a throttle plate ( 54 , 56 ) is arranged in the distributor ( 34 ) in the outputs leading to the two feed lines ( 36 , 38 ). 4. Kraftstoffversorgungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verteilerleisten (24, 25) und die Einspritzventile (20) im Ansaugstutzen (14, 16) der Brennkraftmaschine integriert sind. 4. Fuel supply device according to one of the preceding claims, characterized in that the distributor strips ( 24 , 25 ) and the injection valves ( 20 ) in the intake manifold ( 14 , 16 ) of the internal combustion engine are integrated. 5. Kraftstoffversorgungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kraftstoffförderpumpe (26) seitlich an einem der beiden Ansaugstutzen (14, 16) angeflanscht ist und über eine Nockenwelle der Brennkraftmaschine angetrieben wird.5. Fuel supply device according to one of the preceding claims, characterized in that the fuel delivery pump ( 26 ) is flanged laterally on one of the two intake ports ( 14 , 16 ) and is driven via a camshaft of the internal combustion engine.
DE19958565A 1999-12-04 1999-12-04 Fuel supply device for a multi-cylinder internal combustion engine Expired - Fee Related DE19958565B4 (en)

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Application Number Priority Date Filing Date Title
DE19958565A DE19958565B4 (en) 1999-12-04 1999-12-04 Fuel supply device for a multi-cylinder internal combustion engine

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DE19958565A1 true DE19958565A1 (en) 2001-06-07
DE19958565B4 DE19958565B4 (en) 2009-04-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055610A1 (en) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Fuel injection system for an internal combustion engine
CH705729A1 (en) * 2011-11-07 2013-05-15 Liebherr Machines Bulle Sa Injection.
DE102012202897A1 (en) * 2012-02-27 2013-08-29 Continental Automotive Gmbh Fuel supply system for an internal combustion engine

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EP0262539B1 (en) * 1986-09-25 1991-01-09 Ganser-Hydromag Fuel injector unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055610A1 (en) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Fuel injection system for an internal combustion engine
CH705729A1 (en) * 2011-11-07 2013-05-15 Liebherr Machines Bulle Sa Injection.
WO2013068069A1 (en) * 2011-11-07 2013-05-16 Liebherr Machines Bulle Sa Injection system
DE102012202897A1 (en) * 2012-02-27 2013-08-29 Continental Automotive Gmbh Fuel supply system for an internal combustion engine

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