DE102006061253A1 - High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected - Google Patents
High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected Download PDFInfo
- Publication number
- DE102006061253A1 DE102006061253A1 DE102006061253A DE102006061253A DE102006061253A1 DE 102006061253 A1 DE102006061253 A1 DE 102006061253A1 DE 102006061253 A DE102006061253 A DE 102006061253A DE 102006061253 A DE102006061253 A DE 102006061253A DE 102006061253 A1 DE102006061253 A1 DE 102006061253A1
- Authority
- DE
- Germany
- Prior art keywords
- groove
- fuel pump
- fuel
- air
- pump
- 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- Withdrawn
Links
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
- F02M59/44—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
- F02M59/442—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 means preventing fuel leakage around pump plunger, e.g. fluid barriers
-
- 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
-
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
-
- 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
- F04B53/04—Draining
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Abstract
Description
Die Erfindung betrifft eine Kraftstoffpumpe, insbesondere eine Hochdruckkraftstoffpumpe eines Common-Rail-Kraftstoffsystems, nach dem Oberbegriff des Anspruchs 1.The The invention relates to a fuel pump, in particular a high-pressure fuel pump a common rail fuel system, according to the preamble of the claim 1.
Kraftstoffpumpen verfügen über einen Pumpenzylinder, wobei im Pumpenzylinder ein Pumpenkolben bewegbar gelagert bzw. geführt ist. Der Pumpenkolben wird über einen oder mehrere Nocken im Pumpenzylinder auf und ab bewegt, wodurch Kraftstoff angesaugt und von der Kraftstoffpumpe Verbrauchern, so z. B. Einspritzventilen eines Kraftstoffsystems, zugeführt wird.Fuel pumps have one Pump cylinder, wherein in the pump cylinder, a pump piston movable stored or guided is. The pump piston is over one or more cams in the pump cylinder moves up and down, thereby Fuel sucked in and from the fuel pump consumers, so z. B. injectors of a fuel system is supplied.
Aus der Praxis bekannte Kraftstoffpumpen verfügen im Bereich des Pumpenzylinders, in welchem der Pumpenkolben bewegbar gelagert bzw. geführt ist, über eine oder mehrere Leckagenuten, um eine zwischen dem Pumpenzylinder und dem Pumpenkolben auftretende Kraftstoffleckage entweder ins Kraftstoffsystem oder in einen Leckagerücklauf abzuführen. Insbesondere dann, wenn die Kraftstoffpumpe in einem mit Schweröl oder Gasöl betriebenen Kraftstoffsystem Verwendung findet, können sich als Verlackungen bezeichnete Kraftstoffablagerungen in einem Führungsbereich zwischen dem Pumpenkolben und dem Pumpenzylinder ausbilden, die das Führungsspiel zwischen dem Pumpenkolben und dem Pumpenzylinder einengen und so zu einem Kolbenfresser führen können.Out practice known fuel pumps have in the area of the pump cylinder, in which the pump piston is movably supported or guided, via a or more leakage grooves to one between the pump cylinder and fuel leakage occurring in the pump piston either into the fuel system or in a leakage return dissipate. In particular, when the fuel pump in one operated with heavy oil or gas oil Fuel system use, can appear as a laking designated fuel deposits in a guide region between the pump piston and the pump cylinder forming the guide clearance between the pump piston and constrict the pump cylinder and so can lead to a piston seizure.
Bei aus der Praxis bekannten Kraftstoffpumpen ist es weiterhin bekannt, dass im Bereich der Ausnehmung des Pumpenzylinders, in welcher der Pumpenkolben bewegbar gelagert bzw. geführt ist, mindestens eine Nut ausgebildet ist, die mit Sperröl beaufschlagt ist.at known from practice fuel pumps, it is also known that in the region of the recess of the pump cylinder, in which the pump piston movably stored or guided is, at least one groove is formed, which acts on barrier oil is.
Über die oder jede mit Sperröl beaufschlagte Nut soll verhindert werden, dass Kraftstoff, welcher über die oder jede Leckagenut nicht abgeführt werden kann, in das Schmieröl abläuft. Dabei besteht jedoch das Problem, dass sich das Sperröl mit dem Kraftstoff vermischen kann. Dies ist insbesondere dann der Fall, wenn als Kraftstoff Gasöl verwendet wird.About the or each with barrier oil acted groove is to be prevented that fuel, which over the or any leakage groove not drained can be in the lubricating oil expires. However, there is the problem that the barrier oil with the fuel can mix. This is especially the case when as a fuel Gas oil is used.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, eine neuartige Kraftstoffpumpe zu schaffen. Dieses Problem wird durch eine Kraftstoffpumpe nach Anspruch 1 gelöst. Erfindungsgemäß ist im Bereich der Ausnehmung des Pumpenzylinders, in welcher der Pumpenkolben geführt ist, mindestens eine mit einem gasförmigen Medium beaufschlagbare Nut ausgebildet.Of these, Based on the present invention, the problem is based to create a novel fuel pump. This problem is going through a fuel pump according to claim 1 solved. According to the invention is in Area of the recess of the pump cylinder, in which the pump piston is guided, at least one with a gaseous medium acted upon groove formed.
Im Sinne der hier vorliegenden Erfindung wird vorgeschlagen, dass im Bereich der Ausnehmung des Pumpenzylinders, in welcher der Pumpenkolben geführt ist, mindestens eine mit einem gasförmigen Medium beaufschlagbare Nut ausgebildet ist. Erfindungsgemäß wird demnach die oder jede Nut nicht mit Sperröl sondern mit Sperrgas beaufschlagt. Dies hat den Vorteil, dass es zu keiner Vermischung von Sperröl und Kraftstoff kommen kann.in the For the purposes of the present invention, it is proposed that in Area of the recess of the pump cylinder, in which the pump piston guided is at least one acted upon by a gaseous medium Groove is formed. According to the invention, therefore, the or each Do not groove with blocking oil but charged with sealing gas. This has the advantage of being there to no mixing of barrier oil and fuel can come.
Nach einer vorteilhaften Weiterbildung der Erfindung ist die oder jede mit dem gasförmigen Medium beaufschlagbare Nut über eine Leitung mit einem Verbrennungsluftsystem oder einem Ladeluftsystem oder einem Anlassluftsystem einer Brennkraftmaschine verbunden, um die oder jede Nut mit Verbrennungsluft oder Ladeluft oder Anlassluft zu beaufschlagen.To An advantageous development of the invention is the or each with the gaseous Medium act on groove over a line with a combustion air system or a charge air system or a starting air system of an internal combustion engine, around the or each groove with combustion air or charge air or starting air to act on.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert.preferred Further developments of the invention will become apparent from the dependent claims and the following description. Embodiments of the invention without being limited to this to be closer to the drawing explained.
Dabei zeigt:there shows:
Der
Pumpenkolben
In
die Ausnehmung
Über die
Leckagenute
Erfindungsgemäß ist im
Bereich der Ausnehmung
Im
Ausführungsbeispiel
der
Wie
bereits ausgeführt,
ist die Nut
Gemäß
Im
gezeigten Ausführungsbeispiel
der
- 1010
- KraftstoffpumpeFuel pump
- 1111
- Pumpenzylinderpump cylinder
- 1212
- Ausnehmungrecess
- 1313
- Pumpenkolbenpump pistons
- 1414
- Nockecam
- 1515
- Leckagenutleakage groove
- 1616
- Leckagenutleakage groove
- 1717
- Leckageleitungleakage line
- 1818
- Nutgroove
- 1919
- Leitungmanagement
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006061253A DE102006061253A1 (en) | 2006-12-22 | 2006-12-22 | High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected |
FI20070978A FI123415B (en) | 2006-12-22 | 2007-12-13 | Fuel Pump |
JP2007326574A JP4733102B2 (en) | 2006-12-22 | 2007-12-18 | Fuel pump |
KR1020070134124A KR101375200B1 (en) | 2006-12-22 | 2007-12-20 | Fuel pump |
CN2007101857977A CN101285442B (en) | 2006-12-22 | 2007-12-21 | Fuel pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006061253A DE102006061253A1 (en) | 2006-12-22 | 2006-12-22 | High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006061253A1 true DE102006061253A1 (en) | 2008-06-26 |
Family
ID=38951513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006061253A Withdrawn DE102006061253A1 (en) | 2006-12-22 | 2006-12-22 | High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP4733102B2 (en) |
KR (1) | KR101375200B1 (en) |
CN (1) | CN101285442B (en) |
DE (1) | DE102006061253A1 (en) |
FI (1) | FI123415B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20101746A1 (en) * | 2010-09-27 | 2012-03-28 | Bosch Gmbh Robert | HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
US10400764B2 (en) | 2016-04-15 | 2019-09-03 | S.P.M. Flow Control, Inc. | Well service valve seat removal |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104455858B (en) * | 2014-11-12 | 2017-07-14 | 贵州黔南科技塑业有限公司 | A kind of plastic flexible pipe snap joint |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE831038C (en) * | 1941-11-18 | 1952-02-11 | Friedrich Wilhelm Deckel Dipl | Fuel injection pump for internal combustion engines |
DE10222279A1 (en) * | 2002-05-18 | 2003-11-27 | Deutz Ag | Injection pump with plunger seal for internal combustion engine has plunger sealed from plunger socket in tappet side region and displacement sleeve sealed from housing in work chamber region |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62105361A (en) * | 1985-10-31 | 1987-05-15 | Toshiba Corp | Portable electronic device |
JPS62105361U (en) * | 1985-12-20 | 1987-07-04 | ||
DE19627757A1 (en) * | 1996-07-10 | 1998-01-15 | Bosch Gmbh Robert | Fuel pump |
JP2003206825A (en) * | 2002-01-16 | 2003-07-25 | Denso Corp | High pressure pump for alternate fuel |
JP4013199B2 (en) | 2003-05-16 | 2007-11-28 | ボッシュ株式会社 | Fuel injection pump |
JP2005042735A (en) * | 2004-11-04 | 2005-02-17 | Yanmar Co Ltd | Fuel injection equipment |
JP2006152976A (en) | 2004-12-01 | 2006-06-15 | Nikki Co Ltd | High pressure fuel pump |
-
2006
- 2006-12-22 DE DE102006061253A patent/DE102006061253A1/en not_active Withdrawn
-
2007
- 2007-12-13 FI FI20070978A patent/FI123415B/en not_active IP Right Cessation
- 2007-12-18 JP JP2007326574A patent/JP4733102B2/en not_active Expired - Fee Related
- 2007-12-20 KR KR1020070134124A patent/KR101375200B1/en active IP Right Grant
- 2007-12-21 CN CN2007101857977A patent/CN101285442B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE831038C (en) * | 1941-11-18 | 1952-02-11 | Friedrich Wilhelm Deckel Dipl | Fuel injection pump for internal combustion engines |
DE10222279A1 (en) * | 2002-05-18 | 2003-11-27 | Deutz Ag | Injection pump with plunger seal for internal combustion engine has plunger sealed from plunger socket in tappet side region and displacement sleeve sealed from housing in work chamber region |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20101746A1 (en) * | 2010-09-27 | 2012-03-28 | Bosch Gmbh Robert | HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
US10400764B2 (en) | 2016-04-15 | 2019-09-03 | S.P.M. Flow Control, Inc. | Well service valve seat removal |
Also Published As
Publication number | Publication date |
---|---|
FI20070978A (en) | 2008-06-23 |
CN101285442A (en) | 2008-10-15 |
KR20080059053A (en) | 2008-06-26 |
FI20070978A0 (en) | 2007-12-13 |
JP4733102B2 (en) | 2011-07-27 |
CN101285442B (en) | 2012-01-04 |
KR101375200B1 (en) | 2014-03-18 |
JP2008157233A (en) | 2008-07-10 |
FI123415B (en) | 2013-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102014000326A1 (en) | Fuel injector and dual fuel engine with dynamic gas mixture in the cylinder | |
DE112007001978T5 (en) | Pressure increased common rail fuel injection system and method of operating an internal combustion engine using this | |
DE112009000689T5 (en) | Cam-assisted common rail fuel system and the same engine using | |
DE102009000835A1 (en) | Modular low pressure unit and modular pump arrangement | |
DE102007019909A1 (en) | Fuel pump | |
DE112011101887T5 (en) | Low leakage cam-assisted common rail fuel system, fuel injector and method of operation therefor | |
DE102011081534A1 (en) | Injector for a fluid | |
DE102006061253A1 (en) | High-pressure fuel pump for common-rail fuel injection systems has leakage grooves around bore for piston and additional groove at its base, into which air or inert gas can be injected | |
DE102013207169A1 (en) | Low pressure circuit for a fuel injection system | |
DE19952513A1 (en) | Fuel injection system for internal combustion engines with constant leakage oil pressure in the injector | |
DE19945785B4 (en) | Fuel injection system for internal combustion engines and method for injecting fuel into the combustion chamber of an internal combustion engine | |
AT514966A1 (en) | A high-pressure medium leading component | |
EP1979605B1 (en) | Fuel injector | |
DE102010031390B4 (en) | Suction valve of a fuel supply system of an internal combustion engine | |
DE102011082704A1 (en) | High-pressure fuel pump for an injection system | |
DE102008045193A1 (en) | Fuel supply system i.e. common rail fuel supply system, for marine diesel internal combustion engine, has region maintaining emergency operating pressure through casing and separated from low pressure region by check valve | |
DE102006047294A1 (en) | Fuel supply installation, particularly common-rail fuel supply installation of internal combustion engine, particularly ship diesel internal combustion engine, has low pressure area and pumping unit with high pressure pump | |
DE102013207771A1 (en) | Pump, in particular fuel pump | |
DE10209527A1 (en) | Device for pressure-modulated shaping of the injection process | |
DE102014014475A1 (en) | Fuel pump | |
EP1203882A2 (en) | Injector | |
DE102014220705A1 (en) | High-pressure pump for a fuel injection system of an internal combustion engine | |
DE102014202571A1 (en) | Pump for conveying a fluid | |
DE102013210861A1 (en) | pump | |
DE102010031359A1 (en) | High pressure pump for fuel injector of internal combustion engine, has rotationally driven pump camshaft and pump element, where channel ends in pump working chamber end-side area penetrating in pump working space |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE |
|
R016 | Response to examination communication | ||
R081 | Change of applicant/patentee |
Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE |
|
R120 | Application withdrawn or ip right abandoned |