EP2464852A1 - Fuel metering device for a fuel injection system - Google Patents
Fuel metering device for a fuel injection systemInfo
- Publication number
- EP2464852A1 EP2464852A1 EP10728180A EP10728180A EP2464852A1 EP 2464852 A1 EP2464852 A1 EP 2464852A1 EP 10728180 A EP10728180 A EP 10728180A EP 10728180 A EP10728180 A EP 10728180A EP 2464852 A1 EP2464852 A1 EP 2464852A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering device
- housing
- fuel metering
- fuel
- plastic
- 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 53
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
-
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- 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
- F02M59/445—Selection of particular materials
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
Definitions
- the invention relates to a fuel metering device for a
- Fuel injection system for internal combustion engines according to the preamble of claim 1.
- Such a fuel metering device is known, for example, from DE 10 2005 025 872 A1.
- the fuel metering device serves for the suction side
- Fuel injection device of an internal combustion engine is.
- Fuel metering device has a control valve actuated by an electromagnet with a valve piston, through which different flow cross sections can be set in the intake region of the high-pressure fuel pump. As a result, the flow rate of the fuel pump is controlled.
- the solenoid has an armature and a movable armature pin which actuates the valve piston.
- Anchor bolt and control valve are arranged coaxially one behind the other; the armature is arranged on a control valve opposite end of the anchor bolt.
- Fuel metering device usually comprises a molded with plastic magnet part and a hydraulic control part preferably formed by steel parts.
- the housing In the fuel metering device according to the invention, it is proposed to produce the housing from a plastic overmoulding. This expands the housing for the hydraulic control circuit. The case can handle it take over a sealing function to the outside with respect to the fuel. , The fuel metering device can thereby be made more compact and less expensive for the same functionality.
- Temperature resistance and resistance to fuel set by the selection of starting materials, manufacturing processes and admixtures of additives within wide limits. So almost every mechanical and / or thermal requirement has to be met.
- plastic has a low specific weight compared to metal and is relatively inexpensive. Magnetic flows are not affected by plastic.
- the plastic version allows both the cost-effective production of standard metering units in large quantities as well as the production of smaller special series in which, for example, the socket for electrical contacting is designed differently from the large series, as these jacks later and at a reasonable cost can be connected by welding to the plastic housing.
- the socket for electrical contacting is designed differently from the large series, as these jacks later and at a reasonable cost can be connected by welding to the plastic housing.
- the length of the fuel metering device can be reduced by a material-compatible construction, the length of the fuel metering device.
- the housing has at least one opening for introducing components of the fuel metering device, wherein the openings are each closed by a lid.
- the covers which are also preferably made of plastic, sealingly connected to the housing, preferably laser welded.
- the housing with the covers is a completely sealed unit. It prevents fuel that can occur in the form of leaks in principle everywhere in the interior of the fuel metering device, escaping to the outside.
- the housing causes a favorable damping with respect to vibrations.
- an anchor bolt of the actuating device is axially guided by at least one bearing, preferably at least one bearing bush. The axial guidance can be improved by two bushings in a relatively wide distance from each other in the interior of the
- Fuel metering device are arranged. As a result, tilting of the armature can be prevented and it can in particular of the
- Actuating eg. By an electromagnet
- Actuating applied to the armature radially acting force components are collected.
- Anchor bolt and the bushings may be made of metal or plastic, wherein the anchor bolt and the bearing bushes
- valve piston is guided axially in a separate metal sleeve.
- the metal sleeve can ensure a sufficiently good mobility of the valve piston with low frictional forces.
- the valve piston may be axially guided in a guide of the housing. Since the plastic material of the housing can be made very smooth, a good mobility of the valve piston is guaranteed here. In addition, this embodiment is particularly easy.
- Actuator takes place.
- the armature bearing must be mounted outside the solenoid.
- the height of the fuel metering device can be minimized.
- a plug receptacle for electrical contacting is provided on the housing, wherein the plug receptacle is formed as a separate component, preferably made of plastic, and that the plug receptacle sealingly connected to the housing, preferably
- the plug receptacle is an integral part of the plastic housing, or that the plug receptacle is a separate component. This can be used on a standard housing different plug receptacles (according to different standards) for the fuel metering.
- FIGS. Show it:
- Figure 1 is a schematic representation of a first embodiment of a fuel metering device according to the invention in vertical section;
- Figure 2 is a schematic representation of a second embodiment of the fuel metering device according to the invention in vertical section;
- Figure 3 is a schematic representation of a third embodiment of
- Fuel metering device according to the invention in vertical section.
- FIG. 1 shows a first embodiment of a device according to the invention
- the Metering device 10 in vertical section.
- the metering device 10 is preferably in a high-pressure fuel pump for operating a
- the metering device 10 comprises on an actuating device 12 and an integrated control valve 14.
- the actuating device 12 essentially consists of a magnetic coil 16, an armature 18 with anchor bolt 20 and a magnet pot 22, which partially surrounds the magnetic coil 16 and the armature 18.
- the anchor bolt 20 may be made of metal or plastic.
- the magnet pot 22 serves as a magnetic conclusion.
- a magnetic cone 24 is disposed below the magnetic coil 16.
- the anchor bolt 20 is from a first bearing bush 26 and a second
- Bearing bush 28 axially guided, wherein the bearing bushes 26 and 28 are each arranged in the region of the two ends of the anchor bolt 20.
- Bushings 26 and 28 may be made of metal or plastic. Above the second bearing bush 28, a residual air gap disk 30 is arranged in FIG. In Figure 1, the magnetic coil 16 on the right side in the upper region of an electrical contact point 32, at which a first contact pin 34 connects, which leads the electrical contact via a second contact pin 36 in a connector receptacle 38. The breakthrough point of the first contact pin 34 to the interior of the metering device 10 is through an O-ring 40th
- the control valve 14 has a displaceable, sleeve-shaped valve piston 42, which bears against the anchor bolt 20 and is actuated by the anchor bolt 20.
- a compression spring 44 is arranged, which is the force of the anchor bolt 20 moving
- Actuator 12 counteracts.
- the entire metering device 10 (actuator 12 and control valve 14) is enclosed by a plastic housing 46.
- the plastic housing 46 thereby fixes the magnetic coil 16, the first and second bearing bush 26 and 28, the electrical contact pins 34 and 36 with the connector receptacle 38 and provides a guide for the movable valve piston 42
- Plastic housing 46 may be an individual housing, which by a
- Encapsulation can be made; it can also be a standard housing (universal housing). For inserting the components inside the
- the plastic housing 46 has a first
- the plastic housing 46 has a second mounting opening 50.
- the mounting holes 48 and 50 are closed by cover-like caps 52 and 54 and with the
- Plastic housing 46 laser welded (see reference numerals 56 and 58). Thus, the plastic housing 46 with the caps 52 and 54 is a completely sealed unit.
- the compression spring 44 is supported on the front side on a bottom 60 of the valve piston 42 and on the rear side on a part of the plastic housing 46, which is designed as a spring plate 62.
- the spring plate 62 has an inlet opening 64 in the middle, which the interior of the valve piston 42 with a (not
- the plastic housing 46 has a radially directed outlet opening 66 to the high-pressure fuel pump, not shown, in a hydraulic operative connection.
- Inlet opening 64 of incoming fuel arranged.
- the passage opening may be a laser-cut slot in almost any shape or as a bore.
- an axially sealing O-ring 68 is arranged above the outlet opening 66, wherein a radially sealing O-ring 70 is arranged in the region of the inlet opening 64.
- the flow-through in the metering device 10 can also be reversed (not shown).
- the opening 64 would then be hydraulically connected to the high-pressure fuel pump, while the opening 66 would be connected to the pressure side of the prefeed pump and thus would form the inlet into the metering device 10.
- the metering device 10 functions essentially as follows:
- the magnetic force of the energized solenoid 16 acts on the armature piston 20 on the valve piston 42 and moves it against the resistance of the compression spring 44 continuously in a closed position of the control valve fourteenth
- FIG. 2 shows a second embodiment of the metering device 10 in FIG.
- valve piston 42 is guided in a metal sleeve 72.
- metering device 10 has an axially displaceable
- Adjustment 74 acts as a spring plate 62 and order
- the compression spring 44 to bias accordingly after installation can.
- the adjustment member 74 is fixed inextricably.
- FIG. 3 shows a third embodiment of the metering device 10 in FIG.
- the metering device 10 in the open position and right of the center line 76, the metering device 10 in the closed position.
- the metering device 10 is installed in this embodiment in a universal plastic housing.
- the universal housing has a spacer sleeve 78 to the
- the universal housing initially comprises no connector receptacle, but only a profile 80 for insertion of a standardized connector receptacle 38 as a separate component, as well as a
- the metering device 10 can be adapted to different plug-in systems.
- the plug receptacle 38 is connected to the plastic housing 46th
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910028501 DE102009028501A1 (en) | 2009-08-13 | 2009-08-13 | Fuel metering device for a fuel injection system |
PCT/EP2010/058791 WO2011018265A1 (en) | 2009-08-13 | 2010-06-22 | Fuel metering device for a fuel injection system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2464852A1 true EP2464852A1 (en) | 2012-06-20 |
EP2464852B1 EP2464852B1 (en) | 2013-08-14 |
Family
ID=42664750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10728180.0A Active EP2464852B1 (en) | 2009-08-13 | 2010-06-22 | Fuel metering device for a fuel injection system |
Country Status (9)
Country | Link |
---|---|
US (1) | US8925522B2 (en) |
EP (1) | EP2464852B1 (en) |
JP (1) | JP5474192B2 (en) |
CN (1) | CN102725508B (en) |
DE (1) | DE102009028501A1 (en) |
ES (1) | ES2426477T3 (en) |
IN (1) | IN2012DN00752A (en) |
RU (1) | RU2561355C2 (en) |
WO (1) | WO2011018265A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011076029A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | Fuel metering device for fuel injection system in internal combustion engine, has actuation device for actuating control valve with control element, and fuel flow between inlet opening and outlet is controlled by control element |
DE102011076259A1 (en) | 2011-05-23 | 2012-11-29 | Robert Bosch Gmbh | Fuel metering device for fuel injection system used in internal combustion engine, has inlet opening and outlet separated by sealing element applied circumferentially on outer side of sleeve whose outer side is enclosed by housing |
DE102012010986A1 (en) * | 2012-06-02 | 2013-12-05 | Thomas Magnete Gmbh | Electro hydraulic pressure control valve for pilot control of e.g. hydraulic control valve, has glued sealant that is provided between surface of valve sleeve and surface of plastic housing when valve sleeve is welded |
DE102013216982A1 (en) * | 2013-08-27 | 2015-03-05 | Robert Bosch Gmbh | metering |
WO2015043635A1 (en) * | 2013-09-26 | 2015-04-02 | Robert Bosch Gmbh | Metering unit |
WO2015043637A1 (en) * | 2013-09-26 | 2015-04-02 | Robert Bosch Gmbh | Metering unit |
DE102013224296A1 (en) * | 2013-11-27 | 2015-05-28 | Robert Bosch Gmbh | Electrical plug-in device for connecting a magnetic coil and / or a sensor element |
CN104214031A (en) * | 2014-08-05 | 2014-12-17 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common rail pump metering valve |
EP3026306B1 (en) * | 2014-11-25 | 2019-10-02 | Jtekt Corporation | Solenoid valve |
WO2017029028A1 (en) * | 2015-08-17 | 2017-02-23 | Robert Bosch Gmbh | A housing for a fuel control unit of a high pressure pump |
DE102016215745A1 (en) | 2016-08-23 | 2018-03-01 | Robert Bosch Gmbh | Electromagnetically operated suction valve and method for producing an electromagnetically actuated suction valve |
KR20220017239A (en) * | 2020-08-04 | 2022-02-11 | 현대자동차주식회사 | Fuel tank isolation solenoid valve for vehicle |
KR20220168376A (en) * | 2021-06-16 | 2022-12-23 | 현대자동차주식회사 | Isolation valve |
CN114508601B (en) * | 2022-04-19 | 2022-07-08 | 广东威灵电机制造有限公司 | Solenoid valve, refrigeration plant and car |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4315436A1 (en) * | 1993-05-08 | 1994-11-10 | Bosch Gmbh Robert | Device for regulating the idle speed of an internal combustion engine |
DE19853103A1 (en) * | 1998-11-18 | 2000-05-25 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines |
DE10036939B4 (en) * | 2000-07-28 | 2005-06-09 | Siemens Ag | check valve |
US6807943B2 (en) * | 2002-08-05 | 2004-10-26 | Husco International, Inc. | Motor vehicle fuel injection system with a high flow control valve |
JP4457827B2 (en) | 2004-09-24 | 2010-04-28 | 株式会社デンソー | solenoid valve |
RU2298819C2 (en) * | 2005-05-11 | 2007-05-10 | ООО НПК "Оптолинк" | Integral-optical module for fiber-optic gyroscope |
DE102005025872A1 (en) | 2005-06-06 | 2006-12-07 | Robert Bosch Gmbh | Fuel metering unit for a high-pressure fuel pump and high-pressure fuel pump |
DE102007021593A1 (en) * | 2007-05-08 | 2008-11-13 | Continental Automotive Gmbh | Fuel pump for an injection system of an internal combustion engine |
DE102007057503A1 (en) * | 2007-11-29 | 2009-06-04 | Robert Bosch Gmbh | Radial piston pump for providing high pressure fuel supply in common rail injection system of internal-combustion engine, has low pressure channel provided in distributor element, where channel hydraulically connects pump element with inlet |
DE102007059855A1 (en) | 2007-12-12 | 2009-06-25 | Robert Bosch Gmbh | Fuel metering unit for a high-pressure fuel pump and high-pressure fuel pump |
DE102008018018A1 (en) * | 2008-04-09 | 2009-10-15 | Continental Automotive Gmbh | Pump for conveying a fluid |
-
2009
- 2009-08-13 DE DE200910028501 patent/DE102009028501A1/en not_active Withdrawn
-
2010
- 2010-06-22 US US13/390,240 patent/US8925522B2/en active Active
- 2010-06-22 IN IN752DEN2012 patent/IN2012DN00752A/en unknown
- 2010-06-22 WO PCT/EP2010/058791 patent/WO2011018265A1/en active Application Filing
- 2010-06-22 RU RU2012109100/06A patent/RU2561355C2/en active
- 2010-06-22 JP JP2012524168A patent/JP5474192B2/en active Active
- 2010-06-22 CN CN201080040549.3A patent/CN102725508B/en active Active
- 2010-06-22 ES ES10728180T patent/ES2426477T3/en active Active
- 2010-06-22 EP EP10728180.0A patent/EP2464852B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011018265A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2561355C2 (en) | 2015-08-27 |
US20120152208A1 (en) | 2012-06-21 |
RU2012109100A (en) | 2013-10-20 |
US8925522B2 (en) | 2015-01-06 |
DE102009028501A1 (en) | 2011-02-17 |
WO2011018265A1 (en) | 2011-02-17 |
JP5474192B2 (en) | 2014-04-16 |
CN102725508B (en) | 2015-05-20 |
CN102725508A (en) | 2012-10-10 |
ES2426477T3 (en) | 2013-10-23 |
JP2013501879A (en) | 2013-01-17 |
IN2012DN00752A (en) | 2015-06-19 |
EP2464852B1 (en) | 2013-08-14 |
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