EP2689126A1 - Pressure regulator for a diesel fuel injection system - Google Patents
Pressure regulator for a diesel fuel injection systemInfo
- Publication number
- EP2689126A1 EP2689126A1 EP12704413.9A EP12704413A EP2689126A1 EP 2689126 A1 EP2689126 A1 EP 2689126A1 EP 12704413 A EP12704413 A EP 12704413A EP 2689126 A1 EP2689126 A1 EP 2689126A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure regulator
- pressure
- rod
- aforementioned
- chamber
- 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
- F02M63/0012—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
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0073—Pressure balanced valves
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- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
-
- 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
- F02M63/0245—Means for varying pressure in common rails by bleeding fuel pressure between the high pressure pump and 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
- F02M63/02—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
Definitions
- the present invention relates generally to a pressure regulator for a diesel injection system.
- a diesel engine of a known type for a motor vehicle typically includes a plurality of cylinders, each cylinder being provided with a high-pressure injection valve which, via electrical actuation, ensures the injection of the diesel fuel Pressure can reach or exceed up to 2.5 108 Pa.
- Each injection valve has an injection chamber, which is permanently connected on the one hand to a common-rail high-pressure accumulator and on the other hand to an injection port connected to the cylinder to be supplied.
- An injection needle located in the pressure chamber is controlled by an electrical actuator such.
- a pressure regulator of known type comprises a spray nozzle for the fuel tank under atmospheric pressure or at a higher pressure, the opening of which is caused by overpressure in the pressure accumulator controlled by a computer by an electric actuator which moves a rod, one end of which by means of a ball causes the hermetic closure of the nozzle.
- the rod is translated in a linear translational movement between a first hermetically closed position (lower position in FIGS. 1, 2, 3, 4, 6, 8, 10, 11, 12, 13, 14, 16, 21, 22, 23 24) and a second open position (upper position in the aforementioned figures)
- the guide is effected in the known manner by a cylindrical bore incorporated into the type-known regulator body.
- a functional, as little proven, typically between 19 and 37 ⁇ measuring game is maintained between the inner diameter of the guide bore and the outer diameter of the locking rod.
- various volumes are incorporated within the type-known pressure regulator, such as the actuator chamber, the chamber of a return spring pushing into the open position of the rod, and the discharge chamber located at the nozzle.
- the individual chambers as well as the functional clearance between the bore and the rod are in operation most of the time partially filled with diesel fuel in equilibrium to a pressure prevailing in the fuel tank vehicle tank pressure approximately equal pressure, or to a low pressure, for. B. less than or equal to 1.2 x 10 6 Pa, is brought.
- a type known pressure regulator can show uncontrolled movements of the rod on the one hand, and on the other hand cause noises that are detrimental to the comfort in the motor vehicle provided with such a pressure regulator.
- Object of the present invention is also to provide a diesel engine with a high uniformity of the injection pressure, are avoided in the shocks and the run is supple and even at speed changes and at start.
- Object of the present invention is also to provide a motor vehicle, in the passenger compartment, the operating noise of the diesel engine is negligible
- At least one connecting channel between a point of the reference to a reference pressure, typically the atmospheric pressure, brought hydraulic circuit and the various points of the pressure regulator is incorporated, which could be brought without this channel to deviating pressures from the reference pressure.
- the reference pressure is, for example, that which prevails in the diesel fuel tank, the pressure in the discharge chamber and / or the pressure at the inlet into a diesel fuel filter supplying the high-pressure pump.
- various embodiments of the pressure regulator according to the invention are equipped with internal and / or external channels which connect the most significant points of the low pressure part of the pressure regulator.
- the invention relates generally to a pressure regulator having an inlet which can be connected to a memory of a diesel injection system for a diesel engine, an outlet which can be connected to a low-pressure unit, controllable closure means, which is controlled by an actuator between a first state in which the Ein - And the outlet are hermetically isolated, and a second state in which the inlet is connected to the outlet, can be driven, a plurality of on the side of the outlet with the closure means arranged volumes, characterized in that it comprises a connecting at least two of the aforementioned volumes equalization channel.
- the invention also relates to a pressure regulator, characterized in that the closure means comprise a nozzle, and in that a first of the aforesaid volumes is a relief chamber arranged between the aforementioned nozzle and the aforesaid outlet.
- the invention also relates to a pressure regulator, characterized in that the actuator controlling the closure means is an electrical actuator having a magnetic hub, and in that a second of the aforementioned volumes is a chamber of the magnetic hub.
- the invention also relates to a pressure regulator, characterized in that it comprises a return spring for the closure means, and in that a third of the aforesaid volumes is a spring chamber.
- the invention also relates to a pressure regulator, characterized in that the aforesaid passage has an external line to a body of the aforesaid pressure regulator, a first end of which is connected to a pressure regulator outlet, and a second end of which is connected to the chamber of the magnetic core.
- the invention also relates to a pressure regulator, characterized in that the closure means comprise a rod, and in that the channel is incorporated in this rod.
- the invention also relates to a pressure regulator, characterized in that the rod has a substantially cylindrical shape with a longitudinal axis, and in that the channel has an axial, incorporated in the interior of the rod body along the aforementioned rod axis portion.
- the invention also relates to a pressure regulator, characterized in that the aforesaid passage has a radial portion which is connected to the axial portion and opens into one of the aforementioned volumes.
- the invention also relates to a pressure regulator, characterized in that the channel has an erosion formed on the surface of the aforesaid rod.
- the invention also relates to a pressure regulator, characterized in that it comprises a section incorporated in a body of this pressure regulator.
- the invention also relates to a pressure regulator, characterized in that it comprises a sleeve provided with a channel, wherein a first end of the channel is connected to the conduit and a counter to the aforementioned first end opposite second end opens into the chamber of the magnetic core.
- the invention also relates to a pressure regulator, characterized in that the magnet armature for receiving the sleeve has an axial precision bore.
- the invention also relates to a pressure regulator, characterized in that the aforementioned channel comprises branches which connect three of the aforementioned volumes to each other.
- the invention also relates to a pressure regulator, characterized in that the outlet can be connected to a pipe connected to a diesel fuel tank.
- the invention also relates to a pressure regulator, characterized in that the outlet can be connected to a line which is connected to an inlet of a supply filter for a high-pressure diesel fuel pump.
- the invention also relates to a diesel fuel high-pressure injection system in a diesel engine, characterized in that it comprises a pressure regulator according to the invention.
- the invention also relates to a diesel engine, characterized in that it comprises an injection system according to the invention.
- the invention also relates to a motor vehicle, characterized in that it comprises a motor according to the invention.
- the invention also relates to a pressure regulator, characterized in that one end of the conduit opens into the outlet.
- the invention also relates to a pressure regulator, characterized in that the body for the conduit has an insulating wall opposite the spring chamber.
- the invention also relates to a pressure regulator, characterized in that the magnet armature has a precision bore whose diameter is greater than the diameter of the conduit.
- the invention also relates to a pressure regulator, characterized in that a first end of the precision bore opens against the conduit, and a second end of the precision bore opens into a lifting volume of the magnetic core.
- FIG. 1 is an axial section through a type-known pressure regulator
- - Fig. 2 is an axial section through a first embodiment of a
- - Fig. 3 is an axial section through a second embodiment of a
- - Fig. 4 is an axial section through a third embodiment of a
- Figure 5 is an isometric view of a pole provided with pole elements which can be used in a pressure regulator according to the invention
- - Fig. 6 is an axial section through a fourth embodiment of a
- Figure 7 is a side view of a variant of the pole-equipped bar which could provide a pressure regulator according to the invention.
- - Fig. 8 is an axial section through a fifth embodiment of a
- FIG. 9 is an axonometric view with partial tearing out.
- - Fig. 10 is an axial section through a sixth embodiment of a
- - Fig. 11 is an axial section through a seventh embodiment of a
- FIG. 12 is an axial section through an eighth embodiment of a
- - Fig. 13 is an axial section through a ninth embodiment of a
- - Fig. 14 is an axial section through a tenth embodiment of a
- - Fig. 15 is a perspective view of a body, which in a
- - Fig. 16 is an axial section through an eleventh embodiment of a
- Fig. 17 is a view of a first embodiment of a
- Fig. 18 is a view of a second embodiment of a
- FIG. 19 is a perspective view of a motor vehicle according to the invention with a partial elevation
- Figure 20 is a perspective view of a diesel engine according to the invention of the motor vehicle of Figure 19 with a partial elevation and on a larger scale.
- - Fig. 21 is an axial section through a twelfth embodiment of a
- FIG. 22 is an enlarged detail view of FIG. 21; FIG.
- - Fig. 23 is an axial section through a thirteenth embodiment of a
- Fig. 24 is an axial section through a fourteenth embodiment of a
- FIGS. 1 to 24 the same item numbers have been used to designate the same elements.
- the type-known pressure regulator 1 has a nozzle 3, of which an inlet 5 is connected to the diesel fuel pressure accumulator, and whose low-pressure outlet channels 7 could be connected to the fuel tank of the motor vehicle.
- a rod 9 ensures the closing of the nozzle 3, z. B. by a ball 11 is pressed onto a seat of the nozzle 3.
- the pressure regulator 1 has for driving the rod 9 in the direction of the closed position to a magnetic actuator 13, which itself has, for example, a fixed magnetic core with a coil 17 and a fixedly connected to the rod 9 axially movable armature 15.
- a return spring 19 pulls the rod 9 in the direction of the open position (not shown in Fig.
- the spring 19 is arranged in a spring chamber 21 volume which forms a bore 9 aligned with the bore, and extends axially over a limited length.
- the spring 19 formed as a helical spring has a first end supported on the magnet armature 15 and a second end supported on a lower surface of the chamber 21 forming a shoulder. Beyond the chamber 21 in the figure downwardly extending to receive the rod 9 a aligned with the chamber 21 bore of smaller diameter.
- the armature 15 is disposed in a chamber 23, the armature 15 depending on the current flowing in the coil 17 or not flowing current a first position in which the nozzle 3 is hermetically sealed, and a second position in which the nozzle 3 accordingly of the control current value in the coil 17 is more or less open, it is allowed to take in order to achieve a proportional control of the flowing back into the low pressure diesel fuel.
- the chamber 23 of the magnet armature 15 is extended axially opposite to the nozzle 3.
- the chamber 23 also has a volume 30 of the remaining gap and a lifting volume 41 of the armature 15th
- a discharge chamber 25 which is connected to the outlet channels 7 to the diesel fuel tank or to the inlet filter of a high-pressure pump.
- the non-solid parts (spring 21, rod 9 and armature 15) receiving volumes of the chambers 21, 23 and 25 are filled with diesel fuel, which may contain air bubbles and in equilibrium the same pressure as that in the diesel fuel tank with a high-pressure injection system equipped with the pressure regulator engine, or in the arranged in front of the high-pressure injection pump filter.
- atmospheric pressure prevails in the diesel fuel tank while the pressure in the filter is between 5 Pa and 12xl0 5 Pa.
- the Applicant has discovered that in the individual volumes such as the discharge chambers 25, the spring chamber 21, the chamber 23 of the magnetic Kerns and the play between the rod 9 and the associated guide bore captured diesel fuel pressures could produce unwanted rod movements.
- the resultant of the compressive forces can cause unwanted movements of the rod 9.
- the relief pressure also referred to as the relief pressure
- the relief pressure abruptly rises to the fuel tank.
- the force acting on the ball 11 of the end of the rod 9 nozzle 3 forces cause reopening of the nozzle, and thus an abrupt collapse of the pressure prevailing in the injectors of the engine cylinders supplying high-pressure accumulator.
- An inventive pressure regulator 10 differs from the type-known pressure regulator of Fig. 1 in that it has an external channel 27 which connects the discharge chamber 25 with the chamber 23 of the armature 15.
- an upper hood 29 at the end 31 has a bore, with which the channel 27 can advantageously be connected to the chamber 23 by means of a connection.
- the channel 27 is connected to the discharge chamber 25 via the outlet channels 7 and a connection (not shown).
- the conduit 27 has a diesel fuel discharge port 33 to the fuel tank.
- the relief chamber 25 is connected to the chamber 23 of the magnet armature 15 by a channel extending within the rod 9.
- the channel has an axial branch 27. 1, which is connected to a radial branch 27. 2 located in the lower part of the rod 9 is advantageously connected at the height of this rod, where the rod protrudes into the discharge chamber 25 in both the closed and in the open position of the nozzle 3.
- the axial 27.1 and radial branches 27.2 of permanently connecting the chamber 23 of the armature 15 with the discharge chamber 25 line are advantageously cylindrical.
- these branches are machined - preferably by drilling - produced.
- the radial bore 27.2 makes the bore 27.1 without further traversing the rod 9, so that processing burrs are avoided.
- the rod 9 is a provided on the side of the nozzle 3 with a closure head tube.
- the closure head is advantageously a metallic firmly in the tube z. B. joined by welding, soldering or pressing and / or folded as needed part with a generally frusto-conical shape, which tapers to the ball 11 receiving zone.
- the end of a cylindrical tube is plastically deformed, so that a receiving and / or guide head for the ball 11 is formed.
- the chamber 23 of the armature 15 and the discharge chamber 25 are connected by a incorporated in a body 35 of the pressure regulator 10 line 27.3.
- the line 27.3 has an axis parallel to the axis of the rod 9 receiving bore.
- the line 27.3 is advantageously produced by drilling.
- the channel 27.3 opens into the outlet 7 connected to the chamber 25.
- any turbulence formed in the fuel feed from a reservoir 65 (FIG. 18) does not directly enter the chamber 23 of the magnet armature.
- the indirect connection between the chambers 25 and 23 (via the outlet 7 and the line 27.3) ensures a more stable function of the pressure regulator according to the invention by minimizing the excitation by the pressure on the rod 9 and the armature 30.
- a sleeve 77 provided with an axial channel 79 is advantageously arranged on an end of the channel 27.3 opposite the discharge chamber 25.
- the sleeve 77 preferably traverses an axial bore 83 machined into the armature 15.
- the channel 79 preferably butts flush with the conduit 27.
- the outer diameter of the sleeve 77 is greater than the inner diameter of the conduit 27.3.
- the end of the conduit 27.3 facing the magnet armature 15 has a bore 81 with a larger diameter than the internal diameter of the conduit 27.3.
- the inner diameter of the bore 81 is substantially equal to the outer diameter of the sleeve 77.
- the sleeve 77 is pressed into the bore 81.
- the sleeve 77 and the axial channel 79 are aligned with the conduit 27.3.
- the magnet armature 15 is provided with a precision bore 83 whose inner diameter is slightly larger than the outer diameter of the sleeve 77.
- the insulation between chamber 21 for spring 19 and line 27.3 is obtained by displacing the line 27.3 (in comparison to the embodiment of FIGS. 21 and 22) radially outward from the body 35, so that a partition wall 85 is formed.
- the armature 15 precision bore 83, of which one end opens into the conduit 27.3 and the second end in the lifting volume 41 of the core 15, a larger diameter than the diameter of the conduit 27.3.
- the chamber 25 is connected to the chamber 23 via the outlet 7, the conduit 27.3, the precision bore 83 and the volume 41.
- the variant of Fig. 24 is easier to manufacture, since the use of a sleeve 77 is avoided.
- conduit 27.3 is parallel to the axis of the rod 9.
- the use of the inclined (not parallel to the axis of the rod 9) conduit 27.3 does not depart from the scope of the present invention.
- a rod 9 which has undergone a material removal, so that, after introduction into a cylindrical precision guide bore for the rod 9, a channel is formed in this precision bore, which connects the spring chamber 21 with the discharge chamber 25.
- the rod 9 is provided with an axial flattening 37.
- the length of the flattening 37 is advantageously sufficient so that the channel 27.4 in each position of the rod 9 in the body 35 permanently connects the spring chamber 21 with the discharge chamber 27, as such.
- B. is shown in Fig. 6, in which the pressure regulator 10 according to the invention with the rod 9 of FIG. 5 is provided.
- the rod 9 is provided with a helical groove 27.5, which extends axially from a zone occupying the chamber 21 of the spring 19, while against another part of the groove 27.5 the discharge chamber 25th occupies, as can be seen in Fig. 8.
- a body 35 of a pressure regulator according to the invention which is provided for guiding the needle with a precision bore 39, and comes only in zones of limited length in contact with this needle.
- the body 35 is provided with two guide zones 39, wherein a first upper zone in the immediate continuation of the spring 19 receiving chamber 21 and a second opposite zone 39 in the immediate continuation of Relief chamber 25 are arranged. Between the zones 39, one has a channel 27.6, which is aligned with the needle and has a bore of larger diameter. Due to the small axial length of the guide zones 39 pressure losses can be reduced and thus the compensation of the pressure prevailing in the discharge chamber 25 fuel pressure can be accelerated with the pressure in the chamber 21 for the spring 19. The pressure losses can be further reduced by z. B. axial, helical or other grooves are attached.
- Fig. 10 can be seen a pressure regulator 10 according to the invention with a body 35, as shown in Fig. 9.
- the balance of the rod 9 is further improved by creating a channel 27 which simultaneously connects the relief chamber 25 with the chamber 21 of the spring 19 and with the chamber 23 of the armature 15.
- this last channel has an axial branch 27.6, which is connected to a radial branch 27.7.
- Branches 27.6 and 27.7 are advantageously cylindrical.
- the branches 27.6 and 27.7 are advantageously cylindrical.
- the branches 27.6 and 27.7 are made by drilling.
- the branch 27.7 analogously to the branch 27.2 of FIG. 3 on two radially opposite and connected in the middle with the axial branch ends.
- the pressure regulator 10 also has a flat 37, with which a line 27.4 can be formed.
- the rod 9 is provided with a conduit formed from an outer helical groove 27.5.
- a pressure regulator 10 according to the invention which is provided with an arranged in the extension of an axial channel 27.1 branch 27.6.
- Fig. 14 can see a pressure regulator 10 according to the invention, which is provided with a body 35, which has a conduit 27.6, which is arranged in alignment with the rod 9, as well as a channel formed by the branches 27.6 and 27.7.
- the present invention is not limited to an incorporated into the rod 9 bore to connect the chamber 21 of the spring 19 with the chamber 23 of the armature 15.
- a channel - typically an axial bore - is introduced into the armature 15.
- a radial channel 27.8 is incorporated into the pressure regulator body 35 which connects the chamber 21 to the receiving chamber of the spool which is itself hydraulically connected to the chamber 23 of the armature 15.
- a pressure regulator provided with such a body 35 is shown in FIG.
- such a body may be used instead of the channels 27.6 and 27.7 of the embodiments of Figs. 11, 12, 13 and 14 without departing from the scope of the present invention.
- the motor vehicle 63 has a fuel tank 69, which is connected to a high-pressure pump 73 through a low-pressure connection 71, advantageously via a fuel filter 75.
- the outlet of the high pressure pump 73 is connected to a reservoir or rail 65 through a high pressure connection 77.
- An inventive pressure regulator 10 is advantageously arranged at one end of the memory 65a, which is also provided with a pressure sensor 79 connected electrically to an electronic computer EDC 81.
- the reservoir 65 is connected via high pressure lines 77 to a plurality of injection valves 83 (typically one per cylinder 85).
- the engine further comprises an air mass flowmeter 87 connected to the computer 81, a speed sensor 89 for a crankshaft 91, a temperature sensor 93 for the coolant of the engine 67 and an accelerator pedal provided with a position sensor.
- the present invention is particularly applied to the automobile and truck sector.
- the present invention is particularly applied to the diesel engine industry.
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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1100900A FR2973076A1 (en) | 2011-03-25 | 2011-03-25 | PRESSURE REGULATOR, DIESEL INJECTION DEVICE COMPRISING SUCH A REGULATOR, DIESEL ENGINE COMPRISING SUCH AN INJECTION DEVICE AND VEHICLE COMPRISING SUCH AN ENGINE |
FR1161438A FR2973077B1 (en) | 2011-03-25 | 2011-12-12 | PRESSURE REGULATOR COMPRISING AN ENGINE |
PCT/EP2012/052593 WO2012130521A1 (en) | 2011-03-25 | 2012-02-15 | Pressure regulator for a diesel fuel injection system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2689126A1 true EP2689126A1 (en) | 2014-01-29 |
EP2689126B1 EP2689126B1 (en) | 2017-02-01 |
Family
ID=45592641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12704413.9A Not-in-force EP2689126B1 (en) | 2011-03-25 | 2012-02-15 | Pressure regulator for a diesel fuel injection system |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140070028A1 (en) |
EP (1) | EP2689126B1 (en) |
CN (1) | CN103443441B (en) |
FR (2) | FR2973076A1 (en) |
WO (1) | WO2012130521A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013211937A1 (en) * | 2013-06-24 | 2014-12-24 | Robert Bosch Gmbh | Pressure control valve with deflection cap |
FR3009344B1 (en) * | 2013-07-31 | 2015-08-07 | Delphi Technologies Holding | INTEGRATED ARRANGEMENT OF A HIGH PRESSURE VALVE AND AN INJECTION RAMP |
DE102016225731A1 (en) * | 2016-12-21 | 2018-06-21 | Robert Bosch Gmbh | valve device |
Family Cites Families (16)
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US1876980A (en) * | 1929-11-06 | 1932-09-13 | Fairbanks Morse & Co | Fuel injection device |
US4474208A (en) * | 1983-04-13 | 1984-10-02 | Baird Manufacturing Company | Safety valve |
JP2001082283A (en) * | 1999-09-20 | 2001-03-27 | Hitachi Ltd | Solenoid fuel injection valve |
US6247450B1 (en) * | 1999-12-27 | 2001-06-19 | Detroit Diesel Corporation | Electronic controlled diesel fuel injection system |
US6510836B2 (en) * | 2000-07-03 | 2003-01-28 | Murad M. Ismailov | Swirl injector for internal combustion engine |
DE10043625C2 (en) * | 2000-09-05 | 2003-03-27 | Bosch Gmbh Robert | Hydraulically translated valve |
DE102004028523A1 (en) * | 2004-06-11 | 2005-12-29 | Robert Bosch Gmbh | Fuel injector with clamping sleeve as stop for valve needle |
DE102004062004A1 (en) * | 2004-12-23 | 2006-07-13 | Robert Bosch Gmbh | Pressure control valve |
DE102005009148A1 (en) * | 2005-03-01 | 2006-09-07 | Robert Bosch Gmbh | Fuel injector with direct-acting injection valve member with double seat |
JP4535033B2 (en) * | 2005-10-14 | 2010-09-01 | 株式会社デンソー | Pressure reducing valve and fuel injection device |
DE102007013525A1 (en) * | 2007-03-21 | 2008-09-25 | Robert Bosch Gmbh | Pressure control valve |
EP2017514B1 (en) * | 2007-07-02 | 2018-11-14 | Luxembourg Patent Company S.A. | Closing valve integrated into a pressure-reducing valve |
JP2009103050A (en) * | 2007-10-23 | 2009-05-14 | Denso Corp | Electromagnetic drive device |
US8291889B2 (en) * | 2009-05-07 | 2012-10-23 | Caterpillar Inc. | Pressure control in low static leak fuel system |
JP5493966B2 (en) * | 2009-06-02 | 2014-05-14 | 株式会社デンソー | Fuel injection device |
DE102010043097A1 (en) * | 2010-10-29 | 2012-05-03 | Robert Bosch Gmbh | Pressure control valve |
-
2011
- 2011-03-25 FR FR1100900A patent/FR2973076A1/en active Pending
- 2011-12-12 FR FR1161438A patent/FR2973077B1/en not_active Expired - Fee Related
-
2012
- 2012-02-15 US US14/006,814 patent/US20140070028A1/en not_active Abandoned
- 2012-02-15 WO PCT/EP2012/052593 patent/WO2012130521A1/en active Application Filing
- 2012-02-15 CN CN201280014946.2A patent/CN103443441B/en not_active Expired - Fee Related
- 2012-02-15 EP EP12704413.9A patent/EP2689126B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2012130521A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2689126B1 (en) | 2017-02-01 |
CN103443441B (en) | 2016-10-05 |
US20140070028A1 (en) | 2014-03-13 |
FR2973076A1 (en) | 2012-09-28 |
FR2973077A1 (en) | 2012-09-28 |
CN103443441A (en) | 2013-12-11 |
FR2973077B1 (en) | 2018-05-11 |
WO2012130521A1 (en) | 2012-10-04 |
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