DE102007038529A1 - High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston - Google Patents

High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston Download PDF

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Publication number
DE102007038529A1
DE102007038529A1 DE200710038529 DE102007038529A DE102007038529A1 DE 102007038529 A1 DE102007038529 A1 DE 102007038529A1 DE 200710038529 DE200710038529 DE 200710038529 DE 102007038529 A DE102007038529 A DE 102007038529A DE 102007038529 A1 DE102007038529 A1 DE 102007038529A1
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Germany
Prior art keywords
pump
fuel
pressure
linear motor
working space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE200710038529
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German (de)
Inventor
Gernot Repphun
Andreas Dutt
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE200710038529 priority Critical patent/DE102007038529A1/en
Publication of DE102007038529A1 publication Critical patent/DE102007038529A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow

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

Abstract

The pump (1) has a working space (6) in which fuel is loaded with high pressure. The pump is drivingly coupled with a linear motor (8). The linear motor is drivingly coupled with a pump piston (5), which limits the working space in a cylinder (4). The working space is in connection with a fuel tank (11) and a high pressure fuel reservoir (15) by a suction valve (10) and by a pressure control valve (14). The linear motor is attached to a cooling circuit and to a fuel circuit of an internal-combustion engine for cooling.

Description

Die Erfindung eine Kraftstoffhochdruckpumpe mit mindestens einem Arbeitsraum, in welchem Kraftstoff mit Hochdruck beaufschlagt wird.The Invention a high-pressure fuel pump with at least one working space, in which fuel is subjected to high pressure.

Stand der TechnikState of the art

Herkömmliche Kraftstoffhochdruckpumpen, zum Beispiel Radialkolbenpumpen, sind mechanisch von einer Brennkraftmaschine angetrieben. Dabei wird eine von der Brennkraftmaschine bereitgestellte Drehbewegung in eine Hubbewegung eines Pumpenkolbens der Kraftstoffhochdruckpumpe umgesetzt.conventional High-pressure fuel pumps, for example radial piston pumps, are mechanically driven by an internal combustion engine. It will a provided by the internal combustion engine rotary motion in a lifting movement of a pump piston of the high-pressure fuel pump implemented.

Offenbarung der ErfindungDisclosure of the invention

Aufgabe der Erfindung ist es, eine Kraftstoffhochdruckpumpe gemäß dem Oberbegriff des Anspruchs 1, insbesondere im Hinblick auf Anwendungen mit Hybridantrieben, zu optimieren.task The invention is a high-pressure fuel pump according to the preamble of claim 1, in particular with regard to applications with hybrid drives, to optimize.

Die Aufgabe ist bei einer Kraftstoffhochdruckpumpe mit mindestens einem Arbeitsraum, in welchem Kraftstoff mit Hochdruck beaufschlagt wird, dadurch gelöst, dass die Kraftstoffhochdruckpumpe antriebsmäßig mit einem Linearmotor gekoppelt ist. Die Kraft stoffhochdruckpumpe dient vorzugsweise dazu, Dieselkraftstoff in einem Dieseleinspritzsystem mit Hochdruck von zum Beispiel 1800 bar zu beaufschlagen. Gemäß einem wesentlichen Aspekt der Erfindung wird der Antrieb der Kraftstoffhochdruckpumpe von der Drehzahl der Brennkraftmaschine entkoppelt. Das liefert den Vorteil, dass die Fördermenge der Kraftstoffhochdruckpumpe an dem Bedarf der Brennkraftmaschine ausgerichtet werden kann. Der Linearmotor umfasst ein Bewegungsteil, das durch elektromagnetische Kräfte geradlinig verschoben wird. Eine Saugdrosselung, wie sie von herkömmlichen Dieseleinspritzsystemen bekannt ist, kann entfallen. Durch die Entkopplung von der Drehzahl der Brennkraftmaschine steht bereits beim Starten der Brennkraftmaschine Kraftstoff unter einem hinreichenden Druck zur Verfügung. Das erleichtert den Start-Stopp-Betrieb, da die Brennkraftmaschine bereits nach einer Verdichtung durch den Motorkolben von selbst läuft.The Task is with a high-pressure fuel pump with at least one Working space in which fuel is subjected to high pressure, characterized solved, that the high-pressure fuel pump is drivingly coupled to a linear motor is. The high-pressure fuel pump is preferably used to diesel fuel in a high pressure diesel injection system of, for example, 1800 to apply cash. According to one essential aspect of the invention is the drive of the high-pressure fuel pump decoupled from the speed of the internal combustion engine. That delivers the advantage that the flow rate of High-pressure fuel pump aligned with the needs of the internal combustion engine can be. The linear motor comprises a moving part, which by electromagnetic personnel is moved in a straight line. A suction throttling, as used by conventional Diesel injection systems is known, can be omitted. By decoupling from the speed of the engine is already at startup the engine fuel under a sufficient pressure to disposal. This facilitates start-stop operation because the internal combustion engine already after compression by the Engine piston runs by itself.

Ein bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Linearmotor mit einem Pumpenkolben gekoppelt ist, der den Arbeitsraum in einem Zylinder begrenzt. Durch eine Hubbewegung des Pumpenkolbens wird Kraftstoff in dem Arbeitsraum der Kraftstoffhochdruckpumpe komprimiert.One preferred embodiment the high-pressure fuel pump is characterized in that the Linear motor is coupled to a pump piston, which is the working space limited in a cylinder. By a stroke of the pump piston becomes fuel in the working space of the high-pressure fuel pump compressed.

Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Arbeitsraum über ein Saugventil mit einem Kraftstofftank in Verbindung steht. Bei einer Saugbewegung des Pumpenkolbens öffnet das Saugven til und Kraftstoff strömt aus dem Kraftstofftank in den Arbeitsraum. Das Saugventil ist vorzugsweise als Rückschlagventil ausgeführt.One Another preferred embodiment the high-pressure fuel pump is characterized in that the Workspace over a suction valve communicates with a fuel tank. at a suction movement of the pump piston opens the Saugven valve and fuel flows from the fuel tank into the workspace. The suction valve is preferably as a check valve executed.

Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Arbeitsraum über ein Druckventil mit einem Kraftstoffhochdruckspeicher in Verbindung steht. Im Förderhub des Pumpenkolbens wird der Kraftstoff in dem Arbeitsraum auf das Druckniveau des Kraftstoffhochdruckspeichers komprimiert und in diesen hinein gefördert.One Another preferred embodiment the high-pressure fuel pump is characterized in that the Workspace over a pressure valve with a high-pressure fuel storage in conjunction stands. In the delivery stroke the pump piston, the fuel in the working space on the Pressure level of the high-pressure fuel storage compressed and in promoted this into it.

Weitere bevorzugtes Ausführungsbeispiele der Kraftstoffhochdruckpumpe sind dadurch gekennzeichnet, dass der Linearmotor zur Kühlung an einen Kühlkreislauf oder an einen Kraftstoffkreislauf einer Brennkraftmaschine angeschlossen ist. Dadurch wird die Lebensdauer des Linearmotors erhöht.Further preferred embodiments of High-pressure fuel pump are characterized in that the linear motor for cooling to a cooling circuit or connected to a fuel circuit of an internal combustion engine is. This increases the life of the linear motor.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein Ausführungsbeispiel im Einzelnen beschrieben ist.Further Advantages, features and details of the invention will become apparent the following description, with reference to the drawing an embodiment is described in detail.

Zeichnungdrawing

In der beiliegenden 1 ist eine erfindungsgemäße Kraftstoffhochdruckpumpe schematisch dargestellt.In the enclosed 1 a high-pressure fuel pump according to the invention is shown schematically.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In der beiliegenden Figur ist eine Kraftstoffhochdruckpumpe 1 mit einem Pumpengehäuse 2 schematisch dargestellt. In dem Pumpengehäuse 2 ist ein Zylinder oder Zylinderraum 4 ausgespart, in dem ein Pumpenkolben 5 hin und her bewegbar geführt ist. Der Pumpenkolben 5 begrenzt in dem Zylinder 4 einen Arbeitsraum 6.In the accompanying figure is a high-pressure fuel pump 1 with a pump housing 2 shown schematically. In the pump housing 2 is a cylinder or cylinder space 4 recessed in which a pump piston 5 is guided back and forth movable. The pump piston 5 limited in the cylinder 4 a workroom 6 ,

Gemäß einem wesentlichen Aspekt der Erfindung ist der Pumpenkolben durch einen Linearmotor 8 angetrieben. Durch den Linearmotor 8 kann der Pumpenkolben gezielt hin und her bewegt werden.According to an essential aspect of the invention, the pump piston is by a linear motor 8th driven. By the linear motor 8th The pump piston can be selectively moved back and forth.

Der Arbeitsraum 6 steht über ein Saugventil 10, das als Rückschlagventil ausgeführt ist, mit einem Kraftstofftank 11 in Verbindung. Wenn sich der Pumpenkolben 5 aus dem Arbeitsraum 6 heraus bewegt, dann öffnet das Saugventil 10 und Kraftstoff, vorzugsweise Dieselkraftstoff, gelangt aus dem Kraftstofftank 11 in den Arbeitsraum 6. Im Förderhub bewegt sich der Pumpenkolben 5 in den Arbeitsraum 6 hinein. Dabei wird der in dem Arbeitsraum 6 enthaltene Kraftstoff komprimiert und über ein Druckventil 14, das ebenfalls als Rückschlagventil ausgeführt ist, in einen Kraftstoffhochdruckspeicher 15 gefördert. Im Betrieb wird der Linearmotor 8 gekühlt, was über den Kühlkreislauf des Motors oder den Kraftstoffkreislauf erfolgen kann.The workroom 6 is via a suction valve 10 , which is designed as a check valve, with a fuel tank 11 in connection. When the pump piston 5 from the workroom 6 moved out, then opens the suction valve 10 and fuel, preferably diesel fuel, passes out of the fuel tank 11 in the workroom 6 , In the delivery stroke, the pump piston moves 5 in the workroom 6 into it. It will be in the work space 6 contained fuel compressed and via a pressure valve 14 , which is also designed as a check valve, in a high-pressure fuel storage 15 promoted. In operation, the linear motor 8th cooled, what can be done via the cooling circuit of the engine or the fuel circuit.

Claims (6)

Kraftstoffhochdruckpumpe mit mindestens einem Arbeitsraum (6), in welchem Kraftstoff mit Hochdruck beaufschlagt wird, dadurch gekennzeichnet, dass die Kraftstoffhochdruckpumpe (1) antriebsmäßig mit einem Linearmotor (8) gekoppelt ist.High-pressure fuel pump with at least one working space ( 6 ), in which fuel is subjected to high pressure, characterized in that the high-pressure fuel pump ( 1 ) drivingly with a linear motor ( 8th ) is coupled. Kraftstoffhochdruckpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Linearmotor (8) antriebsmäßig mit einem Pumpenkolben (5) gekoppelt ist, der den Arbeitsraum (6) in einem Zylinder (4) begrenzt.High-pressure fuel pump according to claim 1, characterized in that the linear motor ( 8th ) drivingly with a pump piston ( 5 ), which connects the working space ( 6 ) in a cylinder ( 4 ) limited. Kraftstoffhochdruckpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Arbeitsraum (6) über ein Saugventil (10) mit einem Kraftstofftank (11) in Verbindung steht.High-pressure fuel pump according to one of the preceding claims, characterized in that the working space ( 6 ) via a suction valve ( 10 ) with a fuel tank ( 11 ). Kraftstoffhochdruckpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Arbeitsraum (6) über ein Druckventil (14) mit einem Kraftstoffhochdruckspeicher (15) in Verbindung steht.High-pressure fuel pump according to one of the preceding claims, characterized in that the working space ( 6 ) via a pressure valve ( 14 ) with a high-pressure fuel storage ( 15 ). Kraftstoffhochdruckpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Linearmotor (8) zur Kühlung an einen Kühlkreislauf einer Brennkraftmaschine angeschlossen ist.High-pressure fuel pump according to one of the preceding claims, characterized in that the linear motor ( 8th ) is connected for cooling to a cooling circuit of an internal combustion engine. Kraftstoffhochdruckpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Linearmotor (8) zur Kühlung an einen Kraftstoffkreislauf einer Brennkraftmaschine angeschlossen ist.High-pressure fuel pump according to one of claims 1 to 4, characterized in that the linear motor ( 8th ) is connected for cooling to a fuel circuit of an internal combustion engine.
DE200710038529 2007-08-16 2007-08-16 High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston Withdrawn DE102007038529A1 (en)

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DE200710038529 DE102007038529A1 (en) 2007-08-16 2007-08-16 High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston

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DE200710038529 DE102007038529A1 (en) 2007-08-16 2007-08-16 High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston

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DE200710038529 Withdrawn DE102007038529A1 (en) 2007-08-16 2007-08-16 High-pressure fuel pump i.e. radial piston pump, for use in internal-combustion engine, has working space in which fuel is loaded with high pressure, where pump is coupled with linear motor that is drivingly coupled with pump piston

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202937A1 (en) 2014-02-18 2015-08-20 Robert Bosch Gmbh Pump driven by a linear drive
EP3006735A1 (en) * 2014-10-10 2016-04-13 Siemens Aktiengesellschaft Subsea device for providing a pressurized fluid
IT201700033517A1 (en) * 2017-03-27 2018-09-27 Bosch Gmbh Robert PUMP ASSEMBLY TO SUPPLY FUEL, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE
EP3428441A1 (en) 2017-07-11 2019-01-16 Siemens Aktiengesellschaft Drive for a pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202937A1 (en) 2014-02-18 2015-08-20 Robert Bosch Gmbh Pump driven by a linear drive
WO2015124375A1 (en) * 2014-02-18 2015-08-27 Robert Bosch Gmbh Pump that is driven by a linear drive
EP3006735A1 (en) * 2014-10-10 2016-04-13 Siemens Aktiengesellschaft Subsea device for providing a pressurized fluid
IT201700033517A1 (en) * 2017-03-27 2018-09-27 Bosch Gmbh Robert PUMP ASSEMBLY TO SUPPLY FUEL, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE
EP3428441A1 (en) 2017-07-11 2019-01-16 Siemens Aktiengesellschaft Drive for a pump
WO2019011561A1 (en) 2017-07-11 2019-01-17 Siemens Aktiengesellschaft Drive of a pump
US11085409B2 (en) 2017-07-11 2021-08-10 Siemens Aktiengesellschaft Drive of a pump

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