EP2867529A1 - Kolben-kraftstoffpumpe - Google Patents
Kolben-kraftstoffpumpeInfo
- Publication number
- EP2867529A1 EP2867529A1 EP13729946.7A EP13729946A EP2867529A1 EP 2867529 A1 EP2867529 A1 EP 2867529A1 EP 13729946 A EP13729946 A EP 13729946A EP 2867529 A1 EP2867529 A1 EP 2867529A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel pump
- guide element
- guide
- piston 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
-
- 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
-
- 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
- F02M59/462—Delivery 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
-
- 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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2042—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
-
- 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
- F04B53/1002—Ball valves
- F04B53/1007—Ball valves having means for guiding the closure member
-
- 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
- F04B53/1002—Ball valves
- F04B53/101—Ball valves having means for limiting the opening height
-
- 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
- F04B53/1022—Disc valves having means for guiding the closure member axially
-
- 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
- F04B53/1022—Disc valves having means for guiding the closure member axially
- F04B53/1025—Disc valves having means for guiding the closure member axially the guiding means being provided within the valve opening
-
- 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
- F04B53/1022—Disc valves having means for guiding the closure member axially
- F04B53/1027—Disc valves having means for guiding the closure member axially the guiding means being provided at both sides of the disc
-
- 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
- F04B53/1035—Disc valves with means for limiting the opening height
-
- 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
- F04B53/1037—Flap valves
- F04B53/104—Flap valves the closure member being a rigid element oscillating around a fixed point
- F04B53/1045—Flap valves the closure member being a rigid element oscillating around a fixed point the valve being formed by two elements
-
- 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
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
-
- 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
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
-
- 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
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
- F04B53/1067—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its whole periphery and with an opening at its centre
- F04B53/107—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its whole periphery and with an opening at its centre the opening normally being closed by a fixed element
-
- 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
- F04B53/1085—Valves; Arrangement of valves having means for limiting the opening height
-
- 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
- F04B53/1087—Valve seats
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
Definitions
- the invention relates to a piston fuel pump according to the preamble of
- Claim 1 From the market known fuel systems of internal combustion engines, in which the fuel is conveyed from a fuel tank by means of a mechanically driven piston fuel pump under high pressure in a fuel rail.
- the piston fuel pump has at least one inlet valve and one outlet valve.
- the outlet valve is designed as a spring-loaded check valve, usually with a spherical valve element.
- the fuel piston pump according to the invention has the advantage that its manufacture can be simplified and thus the production costs can be reduced because the guide element is securely held in the pump housing without additional joining measures.
- the guide member By the guide member, the reliability in the operation of the piston fuel pump is further increased, since a tilting prevented and tight closing are ensured.
- the guidance of the valve member by the guide member also reduces wear.
- the guidance of the valve element also ensures a temporally shortened closing process, which increases the efficiency of the piston fuel pump.
- a first development is characterized in that the guide element has a guide section for guiding the valve element and a mounting section for mounting in the opening of the pump housing, wherein the guide section and the mounting section are arranged axially at different points of the guide element.
- the function "guide” is thus separated spatially by the function "holder". As a result, the quality of the function "guide” is maintained, even if in the "bracket" due to the radial pressing radial
- the guide element is pressed into a retaining ring, which in turn is pressed into the pump housing, wherein the retaining ring preferably has fuel passage openings.
- the latter can be designed as axially extending channels or as intermediate spaces between radially outwardly extending wing or blade-like fastening sections.
- the guide element can thus be very easily constructed, which is his
- the guide element has a stroke stop, which limits the opening stroke of the valve element to a predetermined extent.
- This has the advantage that the closing momentum of the valve element is reduced to the valve seat by the travel of the valve element is reduced by the stroke stop.
- the existing accelerations therefore only act on a limited path, which leads to a lower closing speed of the valve element. This reduces the damaging effects of closing, in particular the wear caused by the closing impact both on the valve element and on the valve seat.
- the reduced flight path ensures a shorter time
- Closing process which increases the efficiency of the piston fuel pump.
- the lower closing speed leads to a lower
- a further advantageous development of the piston fuel pump according to the invention is characterized in that the guide element is arranged coaxially to and radially outside of the valve element and has a radially inwardly directed shoulder, which forms the stroke stop.
- the radially inwardly directed stroke stop may be formed for example by an annular shoulder, where the valve element largely comes into contact surface, whereby the loads on the valve element are kept low. In addition, such a guide element does not hinder the placement of the valve spring.
- the guide element at least partially has a smaller inner diameter than the valve element and is arranged coaxially with the valve element, and that the valve element towards the end of the guide portion forms the stroke stop, or that it has a radially outwardly directed paragraph that makes the stroke stop. Again, this is easy to manufacture and assemble and also has the advantage of smaller radial dimensions.
- the guide element fulfills not one, but two or possibly even three tasks.
- This integration of different functions in said guide element can be further expanded if it has a support portion on which the end of the valve spring opposite the valve element is supported.
- valve spring is a spiral or star-shaped flat diaphragm spring, which is attached to the guide element or directly to the pump housing. As a result, the axial height of the exhaust valve can be reduced.
- the guide element may be a sintered or an MIM part. Such a part has a considerable mechanical robustness and thus only in the long term very little wear. Finally, it is also proposed that the valve element has pot-shaped shape.
- the circumferential wall of such a valve element is particularly well suited as a guide wall in interaction with the above-mentioned guide element.
- valve element has a comparatively low mass and thus good dynamics, which in turn benefits the efficiency of the piston fuel pump according to the invention.
- Figure 1 is a schematic representation of a fuel system of a
- FIG. 1 Internal combustion engine with a piston fuel pump, which in turn has an exhaust valve;
- Figure 2 is a longitudinal section through a first embodiment of the exhaust valve of Figure 1;
- Figure 3 is a longitudinal section through a second embodiment of the exhaust valve of Figure 1;
- Figure 4 is a longitudinal section through a third embodiment of the exhaust valve of Figure 1;
- Figure 5 is a plan view of the outlet valve of Figure 4.
- Figure 6 is a longitudinal section through a fourth embodiment of the exhaust valve of Figure 1;
- Figure 7 is a plan view of the outlet valve of Figure 6;
- Figure 8 is a longitudinal section through a fifth embodiment of the exhaust valve of Figure 1;
- Figure 9 is a plan view of the outlet valve of Figure 8;
- Figure 10 is a longitudinal section through a sixth embodiment of the exhaust valve of Figure 1;
- FIG. 11 is a top view of the outlet valve of FIG. 10.
- a fuel system of an internal combustion engine carries in FIG. 1 the whole
- Reference numeral 10 It comprises a fuel tank 12, from which an electric prefeed pump 14 conveys the fuel into a low-pressure line 16. This leads to a high-pressure pump in the form of a piston fuel pump 18 indicated by a dot-dash line. From this, a high-pressure line 20 leads to a fuel rail 22. A plurality of injectors 24 are connected to the latter
- the piston fuel pump 18 includes only indicated in regions
- Pump housing 26 in which a pump piston 28 is guided. This can be offset by a drive, not shown, in a reciprocating motion, which is indicated by a double arrow 30.
- the pump piston 28 and the pump housing 26 define a delivery chamber 32. This is connected via an inlet valve 34 to the low pressure line 16. Furthermore, the delivery chamber 32 via a
- High-pressure passage 36 is connected to an outlet valve 38, which in turn is connected to the high-pressure line 20 on the outlet side.
- Both the inlet valve 34 and the outlet valve 38 are designed as spring-loaded check valves.
- the intake valve 34 may be forcibly opened during a delivery stroke of the pump piston 28, so that the fuel is not in the fuel rail 22, but back into the
- Low pressure line 16 is promoted. As a result, the amount of fuel delivered by the piston fuel pump 18 into the fuel rail 22 can be adjusted.
- FIG. 2 shows a first embodiment of the outlet valve 38 in section.
- an annular counter-plate 40 is press-fitted in the pump housing 26 stepped opening 41, wherein the counter-plate 40 on its right in Figure 2 front end has an axially extending collar-like portion which forms a valve seat 42. This cooperates with a cup-shaped valve element 44.
- the counter-plate 40 is annular with an inner channel 43.
- the cup-shaped valve member 44 includes a bottom 46 and a circumferential
- the outlet valve 38 further comprises a cylindrical guide element in the form of a presently stepped sleeve 50. This has a left in Figure 2 first portion 52 ("guide portion”) and a right in Figure 2 second portion 54th
- the first portion 52 has a larger diameter than the second portion 54. Both portions 52 and 54 are interconnected by a radially extending connecting portion 56.
- the guide element 50 is presently produced as a sheet metal part by deep drawing.
- the inner diameter of the first portion 52 is slightly larger than the outer diameter of the
- valve member 44 is slidably movable in the first portion 52 of the guide member 50 in the axial direction, but firmly guided in the radial direction. In a direction away from the valve seat 42, the end face of the valve element 44 forms the end face
- the guide member 50 has a radially inwardly directed web 60, whose inner edge defines an opening 62. Between the web 60 of the guide member 50 and the valve element 44, a helical valve spring 64 is clamped. The inwardly directed web 60 forms in this respect a support portion for the valve element 44 opposite end of the valve spring 64. The outer diameter of the valve spring 64 and the
- the outlet valve 38 further comprises a retaining ring 66 which is pressed with its outer wall 68 into the opening 41 in the pump housing 26.
- the second portion 54 of the guide member 50 is pressed.
- the connecting portion 56 rests with its side pointing to the right in FIG. 2 on the side of the retaining ring 66 pointing to the left in FIG.
- the guide element 50 can be compressed so far with very little pressure in the retaining ring 66, possibly even be used loosely in the retaining ring 66, without this would affect the operability of the exhaust valve 38.
- a plurality of channel-like fuel passage openings 71 are present.
- valve element 44 lifts off from the valve seat 42 when the pressure in the delivery chamber 32 reaches a corresponding opening value during a delivery stroke of the pump piston 28.
- stroke of the valve element 44 is limited by the stroke stop 58 to a predetermined amount H, which is the distance between the stroke stop 58 and the projecting edge of the
- the guide member 50 is made as a sintered or MIM part. Radially outward, the guide element 50 has a constant diameter. Inside, it has a first annular shoulder, which forms the stroke stop 58, and a second shoulder, which forms the support portion 60 for the valve spring 64.
- the guide member 50 is compressed by itself radially outwardly extending wing or fin sections 72 in the pump housing 26, between which
- valve member 44 is not pot-shaped but mushroom-shaped with a valve plate 46 and a "stem" 48.
- cylindrical guide member 50 has a smaller inner diameter than the valve member 44 but is coaxial with the valve member as before 44 arranged. The end of the guide element 50 pointing toward the valve element 44 forms the stroke stop 58.
- the guide element 50 is held in the pump housing 26 by means of a plurality of radially projecting vanes 72, between which passage openings 71 for the fuel are present.
- the valve spring 64 is a flat diaphragm spring secured to the top of the guide member 50.
- the flat diaphragm spring 64 is executed with a spiral inwardly wound spring arm 74 at the end of the stem 48 of the valve member 44 abuts ( Figures 6 and 7), or in the end of the smaller diameter end of the stem 48 of the Valve element 44 is fitted ( Figures 4 and 5).
- the flat diaphragm spring 64 is formed like a rosette with a plurality of radial star-shaped spring arms 74 which are held in a center 76 against which abuts the end of the stem 48 of the valve member 44.
- the flat diaphragm spring 64 of FIGS. 10 and 11 also has an intermediate ring 78.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211107 | 2012-06-28 | ||
DE102012222826.8A DE102012222826A1 (de) | 2012-06-28 | 2012-12-11 | Kolben-Kraftstoffpumpe |
PCT/EP2013/062578 WO2014001140A1 (de) | 2012-06-28 | 2013-06-18 | Kolben-kraftstoffpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2867529A1 true EP2867529A1 (de) | 2015-05-06 |
EP2867529B1 EP2867529B1 (de) | 2019-10-16 |
Family
ID=49754204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13729946.7A Active EP2867529B1 (de) | 2012-06-28 | 2013-06-18 | Kolben-kraftstoffpumpe |
Country Status (7)
Country | Link |
---|---|
US (2) | US10851752B2 (de) |
EP (1) | EP2867529B1 (de) |
JP (1) | JP6099739B2 (de) |
KR (3) | KR20140136056A (de) |
CN (1) | CN104428533B (de) |
DE (3) | DE102012222823A1 (de) |
WO (3) | WO2014001126A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012221540A1 (de) * | 2012-11-26 | 2014-05-28 | Robert Bosch Gmbh | Ventileinrichtung |
DE102014216282A1 (de) * | 2014-08-15 | 2016-02-18 | Robert Bosch Gmbh | Kolbenpumpe mit mechanischen Hubanschlag für Membranfeder |
US20170356412A1 (en) * | 2015-01-26 | 2017-12-14 | Hitachi Automotive Systems, Ltd. | Valve mechanism and high-pressure fuel supply pump including valve mechanism |
JP2016176482A (ja) * | 2015-03-18 | 2016-10-06 | 株式会社デンソー | 流体制御弁及び高圧ポンプ |
JP6373785B2 (ja) * | 2015-03-30 | 2018-08-15 | 日立オートモティブシステムズ株式会社 | 高圧燃料供給ポンプ |
DE202015106101U1 (de) * | 2015-11-11 | 2016-02-01 | Holger Blum | Dosiereinrichtung |
DE202015106097U1 (de) * | 2015-11-11 | 2016-02-01 | Holger Blum | Fördereinrichtung für eine Vakuumdestillationsanlage |
DE102016110279A1 (de) * | 2015-11-25 | 2017-06-01 | Hilite Germany Gmbh | Rückschlagventil für ein Pleuel für eine variable Verdichtung einer Brennkraftmaschine sowie Pleuel mit einem derartigen Rückschlagventil |
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2012
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- 2012-12-11 DE DE102012222826.8A patent/DE102012222826A1/de active Pending
- 2012-12-12 DE DE102012222853.5A patent/DE102012222853A1/de not_active Withdrawn
-
2013
- 2013-06-17 WO PCT/EP2013/062526 patent/WO2014001126A1/de active Application Filing
- 2013-06-18 US US14/410,078 patent/US10851752B2/en active Active
- 2013-06-18 KR KR1020147029839A patent/KR20140136056A/ko active Search and Examination
- 2013-06-18 KR KR1020157030578A patent/KR102020199B1/ko active IP Right Grant
- 2013-06-18 KR KR1020147011340A patent/KR101536899B1/ko active IP Right Grant
- 2013-06-18 CN CN201380034410.1A patent/CN104428533B/zh active Active
- 2013-06-18 WO PCT/EP2013/062578 patent/WO2014001140A1/de active Application Filing
- 2013-06-18 JP JP2015518972A patent/JP6099739B2/ja active Active
- 2013-06-18 WO PCT/EP2013/062572 patent/WO2014001139A1/de active Application Filing
- 2013-06-18 EP EP13729946.7A patent/EP2867529B1/de active Active
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2017
- 2017-11-20 US US15/817,698 patent/US10352284B2/en active Active
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KR102020199B1 (ko) | 2019-09-11 |
US20150316013A1 (en) | 2015-11-05 |
JP6099739B2 (ja) | 2017-03-22 |
WO2014001126A1 (de) | 2014-01-03 |
KR20150125730A (ko) | 2015-11-09 |
DE102012222853A1 (de) | 2014-01-02 |
DE102012222826A1 (de) | 2014-01-02 |
CN104428533A (zh) | 2015-03-18 |
US10851752B2 (en) | 2020-12-01 |
KR20140070636A (ko) | 2014-06-10 |
US10352284B2 (en) | 2019-07-16 |
JP2015521715A (ja) | 2015-07-30 |
US20180073477A1 (en) | 2018-03-15 |
CN104428533B (zh) | 2018-10-09 |
WO2014001140A1 (de) | 2014-01-03 |
WO2014001139A1 (de) | 2014-01-03 |
EP2867529B1 (de) | 2019-10-16 |
KR20140136056A (ko) | 2014-11-27 |
KR101536899B1 (ko) | 2015-07-16 |
DE102012222823A1 (de) | 2014-01-02 |
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