DE102015218566A1 - Hydraulic circuit for a high-pressure fuel pump - Google Patents
Hydraulic circuit for a high-pressure fuel pump Download PDFInfo
- Publication number
- DE102015218566A1 DE102015218566A1 DE102015218566.4A DE102015218566A DE102015218566A1 DE 102015218566 A1 DE102015218566 A1 DE 102015218566A1 DE 102015218566 A DE102015218566 A DE 102015218566A DE 102015218566 A1 DE102015218566 A1 DE 102015218566A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- pressure
- fuel
- drive shaft
- pressure 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.)
- Ceased
Links
Images
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
- F02M59/44—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
- 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
-
- 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/006—Crankshafts
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
Abstract
Die Erfindung weist einen von Hydraulikkreislauf für ein Einspritzsystem einer Brennkraftmaschine mit einer Kraftstoffhochdruckpumpe (2) auf, in deren Gehäuse wenigstens ein Pumpenelement angeordnet ist, welches einen federbelasteten und hubbeweglichen Kolben (18) aufweist, der über eine Stößelbaugruppe an einem auf einer Pumpenantriebswelle angeordneten Exzentertrieb oder Nockentrieb abgestützt ist, wobei Kraftstoff über eine Niederdruck-Förderpumpe (4) und eine Zulaufleitung (6) zur Kraftstoffhochdruckpumpe (2) gefördert, in einem Pumpenarbeitsraum verdichtet und über einen Hochdruckabgang einem Hochdruckspeicher (12) zugeführt wird, wobei parallel dazu Kraftstoff zur Kühlung an thermisch hochbelastete Stellen, wie z.B. die Lager (20, 22) der Pumpenantriebswelle, den Exzentertrieb usw. gefördert wird. Die Rückführung des Kühlvolumenstroms erfolgt ausschließlich über die Lager (20, 22) der Pumpenantriebswelle.The invention comprises a hydraulic circuit for an injection system of an internal combustion engine with a high-pressure fuel pump (2), in the housing at least one pump element is arranged, which has a spring-loaded and liftable piston (18) via a ram assembly to a arranged on a pump drive shaft eccentric or cam drive is supported, wherein fuel via a low-pressure feed pump (4) and a feed line (6) to the high-pressure fuel pump (2), compressed in a pump working chamber and a high-pressure outlet to a high-pressure accumulator (12) is supplied, in parallel with fuel for cooling at thermally highly stressed areas, such as the bearings (20, 22) of the pump drive shaft, the eccentric drive, etc. is promoted. The return of the cooling volume flow takes place exclusively via the bearings (20, 22) of the pump drive shaft.
Description
Die Erfindung betrifft einen Hydraulikkreislauf für eine Kraftstoffhochdruckpumpe gemäß den Merkmalen des Oberbegriffs des Anspruchs 1. The invention relates to a hydraulic circuit for a high-pressure fuel pump according to the features of the preamble of claim 1.
Aus der
Weiterhin kann festgestellt werden, dass die Verlustleistung bei modernen Einspritzsystemen für Diesel-Brennkraftmaschinen weiter reduziert werden konnte, so dass die benötigte Antriebsleistung der Kraftstoffpumpe ebenfalls reduziert ist, was sich wiederum vorteilhaft auf den CO2 Ausstoß bemerkbar macht. Furthermore, it can be stated that the power loss could be further reduced in modern injection systems for diesel internal combustion engines, so that the required drive power of the fuel pump is also reduced, which in turn makes beneficial to the CO 2 emissions noticeable.
Die Reduzierung der Verlustleistung wird dabei durch die Reduzierung der Hochdruckleckagen, einer Reibungsoptimierung im Antrieb der Pumpe durch Verbesserung der Oberflächenqualitäten oder z.B. durch eine Reduktion des Totvolumens im Hochdruckverdränger der Kraftstoffpumpe erreicht. Reduction of power dissipation is achieved by reducing high pressure leakage, optimizing friction in the drive of the pump by improving the surface qualities or e.g. achieved by reducing the dead volume in the high-pressure displacer of the fuel pump.
Aufgabe der Erfindung ist es, die Kühlung der Kraftstoffhochdruckpumpe weiter zu optimieren. The object of the invention is to further optimize the cooling of the high-pressure fuel pump.
Die Erfindung weist einen Hydraulikkreislauf für das Einspritzsystem einer Brennkraftmaschine mit einer Kraftstoffhochdruckpumpe auf, in deren Gehäuse wenigstens ein Pumpenelement angeordnet ist, welches einen federbelasteten hubbeweglichen Kolben aufweist, der über eine Stößelbaugruppe an einem auf einer Pumpenantriebswelle angeordneten Exzentertrieb oder Nockentrieb abgestützt ist, wobei Kraftstoff über eine Niederdruck-Förderpumpe zur Kraftstoffhochdruckpumpe gefördert, in einem Pumpenarbeitsraum verdichtet und über einen Hochdruckabgang einem Hochdruckspeicher zugeführt wird. Dabei wird parallel dazu Kraftstoff zur Kühlung an thermisch hochbelastete Stellen, wie z.B. die Lager der Pumpenantriebswelle, den Exzentertrieb usw. geführt. The invention comprises a hydraulic circuit for the injection system of an internal combustion engine with a high-pressure fuel pump, in the housing at least one pump element is arranged, which has a spring-loaded liftable piston which is supported via a plunger assembly to a arranged on a pump drive shaft Exzentertrieb or cam drive, wherein fuel over promoted a low-pressure feed pump to the high-pressure fuel pump, compressed in a pump working space and fed via a high-pressure outlet to a high-pressure accumulator. At the same time, fuel for cooling is supplied to thermally highly stressed areas, such as e.g. the bearings of the pump drive shaft, the eccentric drive, etc. out.
Dabei ist vorgesehen, dass die Rückführung dieses Kühlvolumenstroms ausschließlich über die Lager der Pumpenantriebswelle erfolgt. It is provided that the return of this cooling volume flow takes place exclusively via the bearings of the pump drive shaft.
Die einzige Figur zeigt schematisch einen Hydraulikkreislauf für eine Kraftstoffhochdruckpumpe einer Brennkraftmaschine. The single FIGURE schematically shows a hydraulic circuit for a high-pressure fuel pump of an internal combustion engine.
Der Hydraulikkreislauf bzw. das Druckfluid-Speisesystem für das Einspritzsystem einer Brennkraftmaschine weist eine Kraftstoffhochdruckpumpe
Die wesentlichen Komponenten einer Kraftstoffhochdruckpumpe sind bekannt und werden im Folgenden nur beschrieben, wenn sie zur Erläuterung der Funktionsweise des Hydraulikkreislaufs erforderlich sind. Der Hochdruckausgang der Kraftstoffhochdruckpumpe
Die Kraftstoffhochdruckpumpe
Der gesamte Kühlvolumenstrom wird dabei ausschließlich über die Lager
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 19652831 B4 [0002] DE 19652831 B4 [0002]
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015218566.4A DE102015218566A1 (en) | 2015-09-28 | 2015-09-28 | Hydraulic circuit for a high-pressure fuel pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015218566.4A DE102015218566A1 (en) | 2015-09-28 | 2015-09-28 | Hydraulic circuit for a high-pressure fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015218566A1 true DE102015218566A1 (en) | 2017-03-30 |
Family
ID=58281808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015218566.4A Ceased DE102015218566A1 (en) | 2015-09-28 | 2015-09-28 | Hydraulic circuit for a high-pressure fuel pump |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102015218566A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19652831B4 (en) | 1996-12-18 | 2011-02-24 | Continental Automotive Gmbh | Pressure fluid feed system for the supply of high pressure manifolds |
DE102011086692A1 (en) | 2011-11-21 | 2013-05-23 | Robert Bosch Gmbh | Valve i.e. overflow valve, for use in common-rail injection system for e.g. diesel engine of motor car, has inlet apertures supplying fluid within cylinder space, where one of apertures is closed and opened in closing and opening positions |
-
2015
- 2015-09-28 DE DE102015218566.4A patent/DE102015218566A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19652831B4 (en) | 1996-12-18 | 2011-02-24 | Continental Automotive Gmbh | Pressure fluid feed system for the supply of high pressure manifolds |
DE102011086692A1 (en) | 2011-11-21 | 2013-05-23 | Robert Bosch Gmbh | Valve i.e. overflow valve, for use in common-rail injection system for e.g. diesel engine of motor car, has inlet apertures supplying fluid within cylinder space, where one of apertures is closed and opened in closing and opening positions |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102008059117B4 (en) | High-pressure pump assembly | |
EP2591225B1 (en) | Fuel system for an internal combustion engine | |
EP1119704B1 (en) | Pump arrangement for providing fuel at high pressure | |
DE102016114198A1 (en) | BLEEDING HIGH-PRESSURE VALVE | |
DE102013111655A1 (en) | Lubricating device of a high pressure pump for a common rail system | |
DE102011055964A1 (en) | fuel feed | |
DE102012202720A1 (en) | high pressure pump | |
DE102008043643A1 (en) | Fuel injection system for an internal combustion engine with HC injector | |
DE10124108A1 (en) | Start-up system for internal combustion engine builds up pressure in pipe systems for components and has supply module with drive independent of internal combustion engine | |
DE102010002801A1 (en) | Fuel injection system of an internal combustion engine | |
DE102010039207A1 (en) | Diesel fuel injection system i.e. common-rail injection system, for self-activating combustion engine, has pump with pump casing, and relief valve whose control side comprising plunger space is arranged between roller shaft and pump piston | |
DE102016107454A1 (en) | Dual-fuel fuel injection system for an internal combustion engine | |
DE102010039211A1 (en) | Fuel injection system for internal combustion engine, has high-pressure pump comprising working area covered by pump cylinder head, where fuel is compressed in working area by pump piston actuated over roller plunger of pump camshaft | |
DE102013225418A1 (en) | Method for operating a high-pressure fuel pump of a fuel injection device of an internal combustion engine | |
DE102011082704A1 (en) | High-pressure fuel pump for an injection system | |
DE102015213322A1 (en) | Fuel injection system | |
DE102015218566A1 (en) | Hydraulic circuit for a high-pressure fuel pump | |
DE102018217644A1 (en) | HIGH PRESSURE PUMP AND METHOD FOR COMPRESSING A FLUID | |
DE102008000711A1 (en) | high pressure pump | |
DE102014220389B4 (en) | Arrangement and method for using braking energy in a fuel system | |
DE102014006995A1 (en) | Common rail system with mechanical pump units | |
DE102013207771A1 (en) | Pump, in particular fuel pump | |
DE102013209760A1 (en) | pump | |
DE102018217327B4 (en) | Method and device for checking the plausibility of the functionality of a high-pressure sensor of a high-pressure fuel injection device of a motor vehicle | |
DE102013224414A1 (en) | Method for operating a fluid delivery system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |