EP2007979A1 - Radial piston pump for supplying fuel at high pressure to an internal combustion engine - Google Patents
Radial piston pump for supplying fuel at high pressure to an internal combustion engineInfo
- Publication number
- EP2007979A1 EP2007979A1 EP07727923A EP07727923A EP2007979A1 EP 2007979 A1 EP2007979 A1 EP 2007979A1 EP 07727923 A EP07727923 A EP 07727923A EP 07727923 A EP07727923 A EP 07727923A EP 2007979 A1 EP2007979 A1 EP 2007979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- piston pump
- radial piston
- threaded pin
- suction valve
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 241000233866 Fungi Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- NQLVQOSNDJXLKG-UHFFFAOYSA-N prosulfocarb Chemical compound CCCN(CCC)C(=O)SCC1=CC=CC=C1 NQLVQOSNDJXLKG-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
- F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
-
- 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
- F02M59/46—Valves
- F02M59/464—Inlet valves of the check valve type
-
- 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
- F04B1/0452—Distribution members, e.g. valves
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
Definitions
- the invention relates to a radial piston pump for high-pressure fuel supply in an internal combustion engine, having a compressor chamber arranged in a displacer housing, with reciprocating pistons arranged in a cylinder chamber, with a suction valve connected to a fuel supply line with a closing body loaded with a spring, an intermediate piece and a threaded pin and with a connected to a fuel discharge line pressure valve.
- a radial piston pump unit in which the suction valve is arranged in the transverse direction to the vertical axis of the reciprocating piston (DE 102 28 552 B4).
- This suction valve has the function of opening in as streamlined a manner as possible within a very short time and then reliably closing it again.
- the suction valve should be sealed and formsta ⁇ bil with an optimal dead space volume.
- the object of the present invention is to make the suction valve in a radial piston pump of the type mentioned so that it is streamlined, wear-resistant and dimensionally stable with optimization of Tot ⁇ volume space.
- valve mushroom formed in Flachsitzaus ⁇ tion with recesses well in the displacer unit is centered.
- the valve lift is ver ⁇ simplified by the distance between the valve head and the displacer unit, so that no stroke adjustment more erfor ⁇ sary is.
- the valve can be made for example of ceramic or sintered ⁇ material.
- the valve mushroom can have three channels distributed over the circumference, which pass through the base plate.
- the stopper plate may at the side remote from the waistband side at least two radi al ⁇ extending, having the through hole associated channels which are fuel-supply line in the region of.
- the suction valve may be arranged analogously to the known prior art in the transverse direction to the vertical axis of the piston and in the displacer housing.
- valve mushroom can displaceably store in a cylinder space of the displacer housing and with its spring-facing front side and the front of the cylinder chamber of the stroke of the suction valve defi ⁇ kidney.
- the threaded pin with a collar on the front side adjacent to the zone of the stop plate ⁇ in which the base plate and the two channels are arranged.
- the threaded pin may have, following the region of the threads, a circumferential groove into which a ring seal is inserted. This results in greater safety in the pump duration drove, since a high biasing force is achieved by the threaded pin with good sealing.
- the stop plate may be between a collar in the displacement housing and the threaded pin Ge ⁇ be arranged, to which the cylinder chamber of smaller diameter of the valve head is connected.
- Fig. 1 shows a cross section through a unit of Ra ⁇ dialkolbenpumpe
- Fig. 2 is an explosive view of the individual parts of the suction valve.
- a radial piston pump 1 is shown for high-pressure fuel supply in an internal combustion engine. It is particularly applicable to a common rail injection system.
- the radial piston pump 1 has a in a Verdrängergephase- se 3 arranged compressor chamber 4 on, as well as one way of which is arranged in a cylinder chamber 6 and reciprocable piston 7.
- This piston 7 can, for example, by a non-illustrated eccentric, known per se drive ⁇ wave corresponding to be moved.
- the radial piston pump 1 a suction valve 10, which is connected to a fuel supply line 9.
- This suction valve 10 can be arranged in the displacer housing 3 in the transverse direction to the vertical axis 0-0 of the piston 7.
- a pressure valve 16 which is connected to a fuel outlet line 17, is arranged above the piston 7. Via the suction valve 10, fuel is supplied from the low-pressure region to the pump piston 7. After the pressure has built up, the compressed fuel is discharged via the pressure valve 16. This fuel flows into a high-pressure channel and via a high-pressure line to a fuel distributor, for example a common-rail system.
- the suction valve 10 has a closing body 12, which is acted upon by a spring 11, in addition, a stop plate 22 and a threaded pin 14 is provided.
- the closing body 12 is formed of the suction valve 10 as the valve head 18, which according to FIG. 2 shows a waste-circuit bunch, 20 ⁇ 20 xx having 19 and subsequently three circumferentially distributed channels 20. These channels through ⁇ set a base plate 34, which may be formed as a bearing for the spring 11.
- This stop plate 22 has on the side facing away from the end collar 19 at least two radially extending, connected to a through hole 36 channels 24 and 24 x , which are in the region of the fuel supply line 9.
- the stop plate 22 is bounded on the back by the threaded pin 14, which has a region 28 for the threads according to FIG.
- valve head 18 supports displaceable bar in a cylinder chamber 38 of the displacer 3 and de ⁇ finiert with its spring 11 of the facing end face and the front of the foregoing cylinder chamber the stroke H of the suction valve 10th
- the threaded pin 14 following the region 28 of the threads, has a circumferential groove 30 into which a ring seal 32 is inserted.
- the suction valve 10 opens and the fuel can flow via the supply line 9, the base plate 36 and the channels 20, 20 ', 20' 'of the closing body 12 in the compressor chamber 4.
- the entire unit of the suction valve 10 is designed easy to install due to the special ⁇ re design, with no adjustment of the stroke and the compression spring 11 is required.
- the dead space volume is optimized, which pen Signsgrad leads to a better pump, and also the suction valve 10 total into ⁇ with low structural complexity streamlined ges ⁇ is taltet.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006017037.7A DE102006017037B4 (en) | 2006-04-11 | 2006-04-11 | Radial piston pump for high-pressure fuel supply in an internal combustion engine |
PCT/EP2007/053455 WO2007116053A1 (en) | 2006-04-11 | 2007-04-10 | Radial piston pump for supplying fuel at high pressure to an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2007979A1 true EP2007979A1 (en) | 2008-12-31 |
EP2007979B1 EP2007979B1 (en) | 2010-02-24 |
Family
ID=38249225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07727923A Active EP2007979B1 (en) | 2006-04-11 | 2007-04-10 | Radial piston pump for supplying fuel at high pressure to an internal combustion engine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7775190B2 (en) |
EP (1) | EP2007979B1 (en) |
JP (1) | JP4971425B2 (en) |
DE (2) | DE102006017037B4 (en) |
WO (1) | WO2007116053A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009004478B4 (en) | 2009-01-13 | 2014-08-14 | Continental Automotive Gmbh | Seat valve and method for its production |
EP2278163A1 (en) * | 2009-07-20 | 2011-01-26 | Delphi Technologies Holding S.à.r.l. | Pump assembly |
DE102010001880A1 (en) * | 2010-02-12 | 2011-08-18 | Robert Bosch GmbH, 70469 | Cylinder head for a high-pressure fuel pump |
ITMI20130023A1 (en) * | 2013-01-09 | 2014-07-10 | Bosch Gmbh Robert | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
ES2402636B1 (en) * | 2013-03-08 | 2014-01-23 | Zertan S.A. | Back pressure valve for fuel injectors |
JP7139974B2 (en) * | 2019-01-25 | 2022-09-21 | 株式会社デンソー | fuel injection pump |
EP4382746A3 (en) * | 2020-11-27 | 2024-09-04 | Erbe Elektromedizin GmbH | Pump unit for medical purposes |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0320181A (en) * | 1989-03-23 | 1991-01-29 | Nippon Piston Ring Co Ltd | Check valve |
JPH0343179U (en) * | 1989-09-05 | 1991-04-23 | ||
DE4027794C2 (en) * | 1990-09-01 | 2002-06-20 | Continental Teves Ag & Co Ohg | Hydraulic radial piston pump |
DE4027848A1 (en) * | 1990-09-03 | 1992-03-05 | Teves Gmbh Alfred | PISTON PUMP |
DE4136624A1 (en) * | 1991-11-07 | 1993-05-27 | Daimler Benz Ag | VALVE CONTROLLED DISPLAY UNIT WITH VALVE RELEASE |
DE19653895A1 (en) * | 1996-12-21 | 1998-06-25 | Teves Gmbh Alfred | Pump, in particular for a hydraulic brake control system |
DE19729791A1 (en) * | 1997-07-11 | 1999-01-14 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel supply |
DE19732791A1 (en) * | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Piston pump |
DE19841642C2 (en) * | 1998-09-11 | 2002-07-18 | Bosch Gmbh Robert | Radial piston pump |
JP2000097380A (en) * | 1998-09-24 | 2000-04-04 | Sanoh Industrial Co Ltd | Connector for fluid pipe |
DE19848035A1 (en) * | 1998-10-17 | 2000-04-20 | Bosch Gmbh Robert | Radial piston pump for high fuel pressure in IC engines with common-rail injection system has suction valve closure spring supported on pump piston and contained in long piston bore |
DE10117600C1 (en) * | 2001-04-07 | 2002-08-22 | Bosch Gmbh Robert | High-pressure fuel pump for a fuel system of a direct-injection internal combustion engine, fuel system and internal combustion engine |
ITTO20011039A1 (en) | 2001-10-30 | 2003-04-30 | Ct Studi Componenti Per Veicol | SUCTION VALVE FOR A HIGH PRESSURE PUMP, IN PARTICULAR FOR FUEL OF AN ENDOTHERMAL ENGINE. |
DE10228552B9 (en) | 2002-06-26 | 2007-08-23 | Siemens Ag | Radial piston pump unit |
JP2007501913A (en) * | 2004-02-11 | 2007-02-01 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | High pressure pump used especially for fuel injection devices of internal combustion engines |
DE102004028073B3 (en) | 2004-06-09 | 2005-08-04 | Siemens Ag | No-return valve for fuel injection system has inflow via at least one inflow groove in valve body and at least one inflow boring in valve body |
-
2006
- 2006-04-11 DE DE102006017037.7A patent/DE102006017037B4/en not_active Expired - Fee Related
-
2007
- 2007-04-10 US US12/296,773 patent/US7775190B2/en not_active Expired - Fee Related
- 2007-04-10 WO PCT/EP2007/053455 patent/WO2007116053A1/en active Application Filing
- 2007-04-10 JP JP2009504719A patent/JP4971425B2/en active Active
- 2007-04-10 DE DE502007002933T patent/DE502007002933D1/en active Active
- 2007-04-10 EP EP07727923A patent/EP2007979B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007116053A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7775190B2 (en) | 2010-08-17 |
JP2009533594A (en) | 2009-09-17 |
DE102006017037B4 (en) | 2015-09-17 |
DE502007002933D1 (en) | 2010-04-08 |
US20090126695A1 (en) | 2009-05-21 |
EP2007979B1 (en) | 2010-02-24 |
WO2007116053A1 (en) | 2007-10-18 |
JP4971425B2 (en) | 2012-07-11 |
DE102006017037A1 (en) | 2007-10-18 |
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