EP3014110A1 - Druckregelventil mit umlenkkappe - Google Patents
Druckregelventil mit umlenkkappeInfo
- Publication number
- EP3014110A1 EP3014110A1 EP14720618.9A EP14720618A EP3014110A1 EP 3014110 A1 EP3014110 A1 EP 3014110A1 EP 14720618 A EP14720618 A EP 14720618A EP 3014110 A1 EP3014110 A1 EP 3014110A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure control
- pin
- control valve
- anchor pin
- 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
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/023—Means for varying pressure in common rails
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
- F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled
Definitions
- the invention relates to a pressure control valve, for example, in a
- Fuel supply system of a vehicle is used.
- pressure control valves are used, for example, to regulate a pressure in a high pressure region of a common rail injection system at a certain level.
- a pressure control valve has in the
- an actuator in the form of an electromagnet that can move a valve pin in a valve pin bore and the one
- Valve element such as a valve ball, by the magnetic force in one
- Valve seat holds to close the pressure control valve.
- a pressure regulating valve can have an axial inlet opening and a
- the invention relates to a pressure control valve, which can be installed, for example, in the housing of a high pressure pump of a common rail injection system.
- the pressure regulating valve comprises a housing having an inlet opening and an outlet opening; one in
- valve pin Housing guided valve pin; a valve member (eg, a valve ball) at one end of the valve pin adapted to close a valve seat upon movement of the valve pin so that fluid flow between the input port and the discharge port is interrupted.
- the valve pin is divided into an anchor pin and a valve needle, wherein the anchor pin has a hollow channel and the valve needle at least one side channel, so that when the pressure regulating valve is open, the fluid flow from the inlet port through the side channel into the hollow channel and from there into the discharge port.
- the one or more side channels may be, for example, longitudinal grooves. In this way, the outflow of the fluid to the low-pressure region can take place axially past the valve element via longitudinal grooves, which are introduced externally into the valve needle.
- the anchor pin can be inexpensively designed as a pipe.
- the pressure regulating valve comprises an actuator for moving the valve pin, which is adapted to the
- Anchor pin to exercise a force.
- the actuator may be, for example, a coil or an electromagnet, the or the anchor pin by means of a
- Valve anchor can move in the direction of the valve seat.
- the valve needle can be supported on the anchor pin (for example via an intermediate element or a cap on the anchor pin) and be moved by it. If the valve is open, that is, the valve member (eg, a valve ball) is not seated on the valve seat (eg, a tapered opening), fluid such as about fuel, between the inlet opening and the outflow opening and a pressure in front of the inlet opening can be reduced.
- the valve needle has a larger diameter than the anchor pin. In this way, an axial fluid flow through the side channel can be converted into an axial fluid flow in the hollow channel without much lateral movement.
- the valve needle has at least three axial side channels.
- the side channels or longitudinal grooves can be arranged symmetrically to a central axis of the valve needle.
- the anchor pin is guided in a first housing part and the valve needle in a second housing part.
- the two housing parts can be plugged into each other.
- the second housing part embrace the first.
- a shim for adjusting the distance of the valve tip from the valve seat may be arranged.
- the pressure regulating valve comprises a deflection cap or anchor pin cap for the fluid flow, which is arranged between the anchor pin and the valve needle.
- the deflector can thereby the outflow of the fluid as lossless from the outside (i.e.
- the Umlenkkappe can be used as an interface between the anchor pin and valve needle on the one hand, a transfer of magnetic force in the axial direction of the
- the deflection cap is attached to the anchor pin and supported on the valve needle.
- the deflecting cap can be placed on the front side of the anchoring needle and / or can be pressed onto the valve needle.
- the Umlenkkappe may have a plate-shaped projection, with which it is supported on an end face of the valve needle.
- the deflection cap is fastened by means of a groove connection to the anchor pin.
- the deflection cap is fastened by means of a groove connection to the anchor pin.
- Umlenkkappe be attached with a circumferential groove on the anchor pin.
- the deflecting cap and the anchor pin may have the same outer diameter, so that the deflecting cap can be guided together with the anchor pin in the first housing part.
- the deflection cap on an annular outer wall, the interior of radial webs in
- the deflection cap can have five webs and thus five through-openings.
- the webs or passage openings can be arranged symmetrically to a central axis of the deflection cap.
- the passage openings extend obliquely to an axial direction.
- the axial flow can be deflected by the one or more side channels of the valve needle in the axial flow in the hollow channel. It can be on an input side in the middle
- the webs have a
- the deflection cap is formed with a two-part pressing tool.
- the deflection cap in MIM technology MIM: Metal Injection Molding
- MIM Metal Injection Molding
- the deflection cap can be designed so that they are only two in the axial direction
- slidable tools is demoldable.
- FIG. 1 shows a longitudinal section through a pressure regulating valve according to a
- FIG. 2 shows a detail of FIG. 2 enlarged.
- 3A and 3B show the components of a valve pin for a pressure control valve according to an embodiment of the invention in two perspective views.
- Fig. 4A shows a longitudinal section through a deflection cap for a pressure regulating valve according to an embodiment of the invention.
- FIGS. 4B and 4C show two perspective sectional views of the deflection cap from FIG. 4A.
- FIG. 5A shows a plan view of the deflection cap from FIG. 4A.
- Fig. 5B shows a perspective view from above of the deflection cap of Fig. 4A.
- Fig. 6A shows a bottom view of the deflection cap of Fig. 4A.
- FIG. 6B shows a perspective view from below of the deflecting cap from FIG. 4A.
- Figs. 7A and 7B are sectional views of a segment of the deflection cap of Fig. 4A.
- Fig. 8A shows a side view of a segment of the deflection cap of Fig. 4A.
- FIG. 8B shows a perspective view of a segment of the deflection cap from FIG. 4A.
- 9A and 9B are perspective views of segments of a
- Fig. 1 shows a longitudinal section through a pressure regulating valve 10, which comprises a multi-part pressure pin or valve pin 12 which can be pressed by means of magnetic force against a valve seat 14 to flow of a fluid (such as fuel for a vehicle) from an inlet opening 16 in to prevent a discharge opening 18.
- a fluid such as fuel for a vehicle
- the valve pin 12 has a first valve pin part 12a and an anchor pin 12a and a second valve pin part 12b and a valve needle 12b, which are arranged one behind the other in a multi-part housing 20, are guided by this in an axial direction A and axially in the axial direction A. aligned.
- the anchor pin 12a is guided in a first housing part 20a and the valve needle 12b in a second housing part 20b or valve body 20b, wherein the valve body 20a is attached to the first housing part 20a.
- an actuator 22 in the form of the armature needle 12a enclosing coil 22 is arranged, which generates a magnetic field when energized, which acts on an armature plate 24 which is attached to one end of the armature needle 12a and substantially orthogonal to the axial direction A.
- the anchoring needle 12a is arranged.
- the anchor plate 24 is disposed in an opening 26 in the housing 20, which is closed by a valve cover 28 which is inserted into the opening 26.
- the valve cover 28 provides the axial outflow opening 18, which is opposite to the axial inlet opening 16.
- the valve cover 28 has an electrical interface 32, in the electrical contacts 34, such as
- Plug pins are arranged to energize the coil 22.
- the valve seat 14 is formed in the valve body 20b, for example in the form of a conical seat.
- the valve seat 14 is located in the axial direction A.
- Valve ball 36 is located.
- the pressure regulating valve 10 can be fastened by means of the valve body 20b in a rail tube 44 of a common rail system.
- a shim 42 is arranged, with which the distance between the valve tip 38 and the valve seat 14 can be adjusted in the axial direction.
- FIG. 2 shows a detail of FIG. 1 enlarged.
- a deflection cap 46 is attached, which is discontinued at one end of the valve needle 12b.
- valve spring 46 see FIG. 1
- the armature plate 24 together with the anchor pin 12a in the axial direction A from the valve seat 14 away.
- valve needle 12b With the valve ball 36 is also moved in this direction so that it remains deposited on the deflection cap 46.
- the valve pin 12 as well as its components, the anchor pin 12 a, the
- Deflection cap 46 and the valve needle 12b serve not only for power transmission, but also to the fluid line.
- the anchor pin 12a is hollow or tubular and has a hollow channel 47 in its interior.
- the valve needle 12b has lateral, axial channels 48 or grooves 48.
- the deflection cap 46 is designed to divert a fluid flow from the side channels 48 into the hollow channel 47 of the anchor pin 12a.
- FIGS. 3A and 3B show the components of the valve pin 12 in two perspective views.
- the valve needle 12b has three side channels 48 which extend in the axial direction A.
- Each of the side channels 48 has a circular segment-shaped cross section. In the region of the tip 38 of the valve needle 12 b, the cross section of the side channels 48 widens in such a way that they touch the valve ball 46.
- the Umlenkkappe 46 is inserted by means of a groove connection 52 on the anchor pin 12a.
- the Umlenkkappe 46 and the anchor pin 12 a have the same outer diameter, which is smaller than the outer diameter of
- the deflection cap 46 is shown in different views.
- the deflection cap 46 has an annular outer wall 54
- the upper end (ie closer to the anchor pin 12a) has a large inner diameter D 2 (for example, 4 mm) and further inside a smaller inner diameter D 3 (for example, 3 mm), which correspond to the outer and inner diameter of the anchor pin 12.
- the diameter D 2 with height h (for example, 1 mm) allows the centering of the anchor pin 12 a to the valve needle 12 b.
- a cylindrical shoulder 55 with diameter D (for example, 2 mm).
- the heights of the deflection cap 46 in the axial direction A are hi (for example 2.8 mm), h 2 (for example 0.4 mm), h 3 (for example 0.4 mm), h (for example 1 mm) and h 5 (for example 0 , 7 mm).
- the interior of the Umlenkkappe 46 is of radial webs 56 in five
- Passages 58 divided. At the diameter D 5 (for example, 0.3 mm), the five webs 56 converge in the circumferential direction.
- the passage openings 58 are formed for the fluid, which extend obliquely to an axial direction A.
- Outflow angle ⁇ (for example, 30 °) and ßi (for example, 30 °), the fluid is passed from radially outside to radially inside.
- the radii Ri and R 2 (for example, 0.5 mm), the connection of the webs 56 to the outer cylindrical wall 54 of the Umlenkkappe 46 takes place.
- the radii of curvature R 3 are selected, for example, to 0.1 mm.
- the webs 58 are at an angle ⁇ ⁇ 72 ° to each other.
- the web width Si (for example 50 ⁇ m) on the upper side of the webs 58 is correspondingly small in order to minimize the flow losses.
- Outlet cross-sections 62 for example, give a total total area of 6.4 mm 2 and almost correspond to the area of 7 mm 2 at
- FIGS. 7A to 8B show a segment from the deflection cap 46, which is indicated at angle 0 in FIG. 5A.
- FIGS. 7A and 7B thus show a cross section through a web 58 along the line AA in FIG. 5A.
- the webs 56 have a teardrop-shaped cross-section in the axial direction (A) with a cone angle of, for example and a radius with R 4
- Figs. 9A and 9B show a tool for an MIM technique. Due to the selected shape of the deflection cap 46, the deflection cap 46 can be demoulded with only two axially movable tool halves 60a, 60b. The lower one
- Tool half 60a is, as indicated by the arrows, downwardly demolded and the upper mold half 60b upwards.
- Fig. 8B shows the
- Tool separation surfaces 62 which are formed by the surfaces 64 of the lower mold half 60a and by the surfaces 66 of the upper mold half 60b.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013211937.2A DE102013211937A1 (de) | 2013-06-24 | 2013-06-24 | Druckregelventil mit Umlenkkappe |
PCT/EP2014/058915 WO2014206605A1 (de) | 2013-06-24 | 2014-04-30 | Druckregelventil mit umlenkkappe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3014110A1 true EP3014110A1 (de) | 2016-05-04 |
EP3014110B1 EP3014110B1 (de) | 2017-06-14 |
Family
ID=50628830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14720618.9A Not-in-force EP3014110B1 (de) | 2013-06-24 | 2014-04-30 | Druckregelventil mit umlenkkappe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3014110B1 (de) |
DE (1) | DE102013211937A1 (de) |
WO (1) | WO2014206605A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10312175A1 (de) * | 2003-03-19 | 2004-10-14 | Robert Bosch Gmbh | Druckbegrenzungsventil |
US20080022974A1 (en) * | 2006-07-28 | 2008-01-31 | Caterpillar Inc. | Multi-stage relief valve having different opening pressures |
DE102010043092A1 (de) * | 2010-10-29 | 2012-05-03 | Robert Bosch Gmbh | Druckregelventil |
DE102010043097A1 (de) * | 2010-10-29 | 2012-05-03 | Robert Bosch Gmbh | Druckregelventil |
FR2973076A1 (fr) * | 2011-03-25 | 2012-09-28 | Bosch Gmbh Robert | Regulateur de pression, dispositif d'injection diesel comportant un tel regulateur, moteur diesel comportant un tel dispositif d'injection et vehicule comportant un tel moteur |
DE102011017765A1 (de) * | 2011-04-29 | 2012-10-31 | Robert Bosch Gmbh | Druckbegrenzungsventil |
-
2013
- 2013-06-24 DE DE102013211937.2A patent/DE102013211937A1/de not_active Withdrawn
-
2014
- 2014-04-30 EP EP14720618.9A patent/EP3014110B1/de not_active Not-in-force
- 2014-04-30 WO PCT/EP2014/058915 patent/WO2014206605A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2014206605A1 (de) | 2014-12-31 |
DE102013211937A1 (de) | 2014-12-24 |
EP3014110B1 (de) | 2017-06-14 |
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