EP1392966B1 - Kraftstoffeinspritzeinrichtung mit druckübersetzungseinrichtung und druckübersetzungseinrichtung - Google Patents
Kraftstoffeinspritzeinrichtung mit druckübersetzungseinrichtung und druckübersetzungseinrichtung Download PDFInfo
- Publication number
- EP1392966B1 EP1392966B1 EP02740297A EP02740297A EP1392966B1 EP 1392966 B1 EP1392966 B1 EP 1392966B1 EP 02740297 A EP02740297 A EP 02740297A EP 02740297 A EP02740297 A EP 02740297A EP 1392966 B1 EP1392966 B1 EP 1392966B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- fuel
- piston
- space
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 91
- 238000002347 injection Methods 0.000 title claims description 51
- 239000007924 injection Substances 0.000 title claims description 51
- 230000003321 amplification Effects 0.000 title 2
- 238000003199 nucleic acid amplification method Methods 0.000 title 2
- 238000007789 sealing Methods 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
- F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
Definitions
- the invention is based on a fuel injection device or a Pressure booster according to the preamble of the independent claims.
- a pressure booster piston means a filling or emptying a backspace an increase in the Fuel injection pressure beyond that of a common rail system provided value.
- WO 01/52916 A2 (prior art under Art. 54 (3) EPC) is a Fuel injection device with a pressure booster device known, whose Rear space with their high-pressure chamber is connectable.
- DE 3102697 describes a Fuel injection device with a pressure booster whose back space constantly with a low pressure line communicates.
- EP 0691471 describes a Fuel injection device with a pressure booster whose high-pressure space over a separate, directly leading to the high pressure fuel source line is filled.
- pressure intensifier according to the invention have the advantage that due to a fillability of the high-pressure chamber of the pressure booster over the rear space no serving solely for filling the high-pressure chamber separate Bore be provided in a metal body of the pressure booster device must pass the larger diameter end of the pressure booster piston.
- Will it be the Connecting line between the back room and high pressure room and in the Connecting line arranged check valve in the piston Integrated pressure intensifier results in a very slim and compact Construction that is ideal for installation in modern engines.
- the piston of the pressure booster of two To assemble parts of different diameter are movable relative to each other and thus in addition to the compressor function by their relative Agility to each other the function of a valve, in particular a Check valve, can take over. This eliminates additional components for the Providing a separate valve arrangement, which allows further space savings.
- the two-part piston does not only take over the function of a check valve, but also a filling valve, without additional components are necessary for this.
- FIG. 1 shows a Fuel injection device on which the invention is based
- Figure 2 a Fuel injection device according to the invention with integrated Pressure booster
- Figures 3 and 4 is not one of the invention included execution of a fuel injector in two different Operating states
- Figure 5 shows an embodiment of an injector according to the invention Pressure booster, in the two-part piston a throttle and a Filling valve are integrated.
- FIG. 6 shows a further embodiment of the invention with alternative design of the filling valve.
- Figures 7, 8 and 9 illustrate alternative Versions of a two-piece piston.
- the High-pressure fuel source includes a plurality of elements not shown, such as a Fuel tank, a pump and the high-pressure rail of a known common rail system, wherein the pump has up to 1600 bar high fuel pressure in the high-pressure rail by transporting fuel from the tank to the high-pressure rail.
- the Injector 10 has a fuel injection valve with a Valve member 12, which with its injection openings in the Combustion chamber 11 of a cylinder of an internal combustion engine protrudes.
- the valve member is at a pressure shoulder 9 of surrounded by a pressure chamber 13, which via a high-pressure line 21 with the high-pressure chamber 40 of the pressure booster device 30 is connected.
- the Control valve 15 is designed as a 2/2-way valve and in the first position closed; in the second position it connects the throttle 19 with a low pressure line 17th
- the valve member is resilient via a return spring 14 stored, wherein the return spring, the valve member against the Injection openings 8 presses.
- the room containing the spring the injection valve of the injector is with another Low pressure line 16 connected.
- the Pressure booster 30 has a resilient mounted piston 36, which with the high pressure line 21st connected high-pressure chamber 40 separates from a space 35, the directly connected to the high-pressure fuel source 60 is.
- the spring 39 is in a rear space 38 of Pressure booster 30 is arranged.
- the piston 36 has a continuation piece 37, which has a smaller Diameter has as the piston 36 at its the space 35th facing the end.
- the back space 38 is via a 2/2-way valve 31 with a low pressure line 32 connectable.
- the Low pressure line 32 leads as well as the Low pressure lines 16 and 17 back to not closer illustrated fuel tank.
- the room 35 of the Pressure booster is via a throttle 47 with connected to the rear space 38, wherein the throttle 47 a Fill valve 49 is connected in parallel. Furthermore connects a fuel line 46 the rear space via Check valve 45 directly to the high-pressure chamber 40th
- the filling valve 49 is then opened and the piston 36, 37 in its initial position, characterized by a large volume of the back space 38.
- the pressure of the high-pressure fuel source can over the opened filling valve 49 in the back room 38 and continue on the check valve 45 to get to the injector.
- This only needs the control valve 15 of the injector are actuated, whereby the injection valve opens.
- the translator control valve 31 controlled, so that the pressure in the back space 38 may drop, causing the filling valve 49 and the Close check valve 45.
- the piston is no longer pressure balanced and there is a pressure boost in the high-pressure chamber 40 according to the pressure area ratio of room 35 and High-pressure chamber 40.
- the injection with two different pressure levels (rail pressure and translated Pressure) and a connection of the Pressure booster device is possible at any time, can a flexible shaping of the course of injection take place.
- a stepped Injection progress begins the injection with a first Phase with low injection pressure, such as the Rail pressure, what a second phase with high Injection pressure using the pressure booster followed.
- the first phase can be as long as you like be executed.
- FIG. 2 shows a fuel injector with a Injector 70 with integrated pressure intensifier 70.
- the integrated design is schematically represented by a dotted line shown. Same components as in Figure 1 are provided with identical reference numerals and will not be described again.
- the throttle 47 off Figure 1 corresponding throttle is integrated Throttle bore 71 carried out in the piston, as is the Filling valve no longer a separate component, but in contrast to FIG. 1 as filling valve 72 integrated in the piston executed.
- the throttle bore 71 as the integrated Filling valve 72 are here in the room 35th facing the end of the piston while the Check valve 45 of Figure 1 corresponding Check valve 74 in the smaller diameter Continuation piece 37 of the piston is integrated.
- the Fuel line 46 is here in the form of a hole as integrated fuel line 75 executed.
- the spring 39 on the piston a restoring force, that is a Force to increase the volume of the high-pressure space 40, is exercised between the housing of the Pressure booster and one fixed to the piston mounted spring retainer 73 clamped.
- the spring holder is mounted so that a fuel flow between the room 35 and the rear space 38 both via the throttle 71 and is not obstructed via the filling valve 72.
- the mode of operation is the same as in FIG. 1 shown embodiment.
- FIG. 3 shows a fuel injection device of a pressure-controlled common-rail system, for each cylinder the internal combustion engine an injector 80 and a Pressure Translation 300 comprises.
- the pressure-controlled injector 80 has a pressure chamber 82, the lifting of his nozzle needle and the provision of fuel to be injected via the Pressure booster 300 applied with fuel can be.
- the closing force exerting spring 101 is at the opposite end of the injection opening Injector 80 arranged in a room for the removal of Fuel leaks connected to a leakage line 81 is that leads to a low pressure system, in particular to Fuel tank of the motor vehicle.
- the pressure chamber 82 is with the high pressure chamber 40 of the pressure booster 300th connected.
- the one at the opposite end of the two-piece Piston 86, 87 located space 35 of the Pressure booster is via a 3/2-way valve 85th either with a low pressure line 84 or with a Storage line 83 connectable.
- the low pressure line 84 leads to the low-pressure system, the fuel to Return fuel tank of the motor vehicle.
- the Storage line 83 leads to a fuel with pressures up to 2000 bar supplying high-pressure fuel source 60, the already described in connection with FIG is.
- This high-pressure fuel source has no closer shown high-pressure trail, in the high pressure standing fuel can be provided and that with each one cylinder of the internal combustion engine associated pressure booster device via a valve is connectable. It is therefore one for each cylinder Pressure booster, a metering valve 85 and a Injector 80 is provided.
- the piston 86, 87 of Pressure booster here has a thick Piston 86 and a thin piston 87, wherein the thick Piston the space 35 and the thin piston the high-pressure chamber 40th limited.
- the thin piston 87 has a bore 88, over which the high-pressure chamber 40 with the rear space 38 of Pressure booster is connectable. In the shown, in the drawing directed downward However, compression movement 100 of the piston are the Sealing surfaces 94 of the thick and thin pistons on each other and close the hole 88.
- One on the the back space 38 facing side of the thick piston 86th mounted return bracket 91 limits the Movement of the thin piston 87 relative to the thick Piston 86, by a particular annular extension 92 of the thin piston detected by the return bracket is as soon as the thick piston 86 a bit far moved counter to the direction of the compression movement 100.
- bores 93 are attached to the Fuel exchange in the back room in the area of Return holder 91 to facilitate.
- the arranged in the rear space 38 spring 39 exercises over the Return bracket 91 a force on the thick piston 86th out, which is the direction of the compaction movement 100 counteracts.
- the back room is over a low pressure line 89 connected to the low pressure system.
- the illustrated compression movement 100 is through Switching the pressure of the high-pressure fuel source, ie the rail pressure of the common rail system, on the room 35 of the Pressure booster activated.
- the connection between the high pressure chamber 40 and the low pressure line 89th is disconnected because the fuel pressure in the space 35 is a force on the thick piston 86 exerts over the sealing surfaces 94 is transferred to the thin piston 87, so that the Bore 88 is closed and in the high-pressure chamber 40 a High pressure can be built up, the fuel pressure in the High-pressure rail of the common rail system exceeds.
- FIG. 4 shows the same system as FIG. 3, but in one another operating state in which the two-part piston 86, 87 performs a compensation movement 110, the Compression movement 100 is opposite.
- the sealing surfaces 94 may alternatively to the illustrated Case in which they are made of the flat plane ends of the thick and The thin piston can be formed on one side too a bore 88 enclosing sealing edge provided be.
- a spherical or hollow spherical design of the Sealing surfaces may be advantageous to a tightness at a possibly occurring angular offset of the two Ensure piston.
- FIG. 5 shows another application in one stroke-controlled pressure-translated common-rail system. Same or similar components as shown in FIG provided with the same reference numerals and will not described again.
- the injector 120 with integrated pressure intensifier in contrast to Figure 2 instead of a pressure booster with one-piece piston one Pressure intensifier with two-piece piston.
- the Design of the pressure booster with two-part Piston according to Figures 3 and 4 with the integration of a throttle 71 and a filling valve 72 in the larger diameter part the pressure booster piston 86, 87 analogous to Embodiment combined according to Figure 2.
- FIG. 6 shows a further embodiment of a pressure-translated common rail system. Same or similar Components as shown in Figure 5 are the same Reference numerals provided and will not be repeated described. In contrast to the embodiment of Figure 5 is instead of the central bore 88 in the thin piston 87 a laterally slightly offset hole 130 provided to the Fill valve 72 by a simpler embodiment in shape replace a continuous bore 140 in the thick piston 86 to be able to.
- Piston ends can, as already described above, other geometries are used, for example a spherical or hollow spherical surface shape, in particular in Area around the holes.
- the filling path 140 may also be through a plurality of holes are replaced or supplemented.
- all holes 140 and 130 encompassing Sealing edge on at least one end of the two pistons be provided.
- FIG. 7 shows a further embodiment of a pressure-translated common rail system. Same or similar Components as shown in Figure 6 are the same Reference numerals provided and will not be repeated described.
- the two-piece piston is not two in a row arranged sub-piston 86 and 87, but of two interlocking piston 150 and 160 constructed.
- the Representation is a cross-sectional side view and shows the formed by the cavity of the thick piston 150 Valve chamber 174, in which the thin piston 160 with his Head region 161 protrudes.
- the head area 161 goes into a smaller diameter neck portion 162 of the thin Piston 160 over, the liquid-tight of one Guide portion 151 of the thick piston 150 is guided.
- the Return spring 39 is between the housing of Pressure Translation device and the compared to Guide area 151 larger diameter area of the thick Piston 150 cocked.
- the thick piston 150 is on the side of the space 35 partially from a circular ring plate 175th closed, which is firmly connected to the thick piston.
- the annular plate has a centrally arranged Passage area 176, which by a movement of the thin piston are sealed relative to the thick piston can.
- a throttle bore 180 mounted, due to a Spacing of the head portion 161 to the thick piston 150 regardless of the position of the thin relative to the thick Piston remains uncovered.
- In the neck area 162 of the thin Piston 160 is a longitudinal bore 186 which in the High-pressure chamber 40 opens.
- the check valve 45 or 74 or 94 from the Embodiments of Figure 1, 2 and 3 is in the Embodiment according to FIG. 7 through the guide region 151 and the transverse bore 185 formed by the Guide area is closable.
- the function of the throttle 47 and 71 from the embodiments of Figures 1 and 2 is through the throttle bore 180 and the bore 170th accepted.
- the rail pressure is in the room 35, in the valve chamber 174 on the Passage area 176, in the rear space 38 via the bore 170th and in the high-pressure chamber 40 via the longitudinal bore 186 at.
- the Pressure intensifier is pressure balanced and the thick piston 150 is on the return spring 39 in its upper Held position.
- the holes 185 and 186 form a Bypass path, which is a pre-injection with rail pressure or allows a boat-shaped main injection. These Holes are only open in the phase in which the Pressure intensifier is not controlled or in the he goes back.
- Figure 8 shows the system during the pressure boost.
- the 2/2-way valve 31 is activated. It relieves the back space 38.
- the piston 150 is no longer pressure balanced, as in rooms 35 and 174 still Rail pressure is applied, but not in the back room 38th This is at leakage pressure level.
- the piston 150 moves relatively to the thin piston 160 a piece, the Freihubumble 190 before and closes the transverse bore 185.
- the thin piston 160 becomes both the guide portion 151 of the thick piston 150th as well as at its the high-pressure chamber 40 facing the end of Housing the pressure booster device out.
- the bore 170 is so designed that the pressure balance between the valve chamber and the back space slowly proceeds, the piston 150 so for a time is not pressure balanced and the Force of the return spring 39 is suppressed. It means that the bore 170 must be throttled until the inlet of Room 35 to the valve chamber 174, and thus on the bore 170th to the back room 38, is closed and both rooms are over the discharge line and the valve 31 can relieve.
- the high pressure chamber 40 relieved in the Initial phase of the movement of the piston 150 is not, otherwise a high injection pressure could not be achieved. This is ensured by the fact that the transverse bore 185 small is relative to the total stroke, the pressure booster can cover so they are run over quickly can. They advantageously also have one Throttling effect and let in the phase of the override no appreciable pressure reduction in the high pressure chamber too.
- O-ring For improved sealing of the passage area 176 through the head portion 161 of the thin piston 160 may be an O-ring be provided on the plate or on the head area is appropriate. This O-ring allows the compensation of Manufacturing and installation inaccuracies.
- FIG. 9 shows the details of a further embodiment variant that illustrated in FIGS. 7 and 8 Pressure booster device.
- the Throttle 180 in the form of a bore in the plate 175th realized while in the alternative form the plate 175th at least one point on the circumference of the Passage area 176 a grooved bevel or groove 200, which even when putting on the plate on the head portion of the thin piston one ensures throttled fuel flow. Even so for a pressure equalization between the rooms 35, 174 and 38 be taken care of after pressure has built up, the pressure booster, however, via the valve 31 again has been deactivated.
- Alternative to or in combination with Grooves in the plate can also grooves 200 in the head area 161 the thin piston 160 may be provided.
Description
Claims (12)
- Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit einem von einer Kraftstoffhochdruckquelle versorgbaren Kraftstoffinjektor (10, 80), wobei zwischen dem Kraftstoffinjektor und der Kraftstoffhochdruckquelle (60) eine einen beweglichen Kolben aufweisende Druckübersetzungseinrichtung (30) geschaltet ist, wobei der bewegliche Kolben einen an die Kraftstoffhochdruckquelle angeschlossenen Raum von einem mit dem Injektor verbundenen Hochdruckraum sowie von einem Rückraum trennt, wobei der Hochdruckraum (40) mit dem Rückraum (38) über eine Kraftstoffleitung (46; 75; 88; 186) derart verbunden ist, so dass der Hochdruckraum über den Rückraum mit dem Hochdruck der Kraftstoffhochdruckquelle befüllt werden kann, wobei der Rückraum (38) über ein Steuerventil (31) mit einer Niederdruckleitung (32) verbunden ist und wobei durch Befüllen des Rückraumes mit Kraftstoff beziehungsweise durch Entleeren des Rückraums von Kraftstoff der Kraftstoffdruck im Hochdruckraum variiert werden kann, wobei an der Kraftstoffleitung (46; 75; 88; 186) ein Ventil, insbesondere ein Rückschlagventil (45; 74; 94; 151, 185), angeordnet ist, so dass ein Rückfluss von Kraftstoff aus dem Hochdruckraum in den Rückraum unterbunden werden kann, dadurch gekennzeichnet, dass die Kraftstoffleitung (46; 75; 88; 186) und das Ventil (45; 74; 94; 151, 185) im Kolben (36, 37; 86, 87; 150, 160) integriert sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Kolben zwei relativ zueinander bewegliche Teile (86, 87; 150, 160) aufweist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Teile aus einem dünnen (87; 160) und einem dicken (86; 150) Kolben bestehen.
- Kraftstoffeinspritzeinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Kraftstoffleitung im dünnen Kolben (87; 160) in Form einer Bohrung (88; 186) integriert ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der dünne (87) und der dicke (86) Kolben über Verbindungsmittel (91, 92) derart miteinander verbunden sind, dass einander zugewandte Dichtflächen (94) der beiden Kolben die Bohrung (88) im Falle eines Aufliegens des dicken Kolbens auf dem dünnen Kolben verschließen.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der dünne Kolben (160) einen in einen durch einen Hohlraum des dicken Kolbens (150) gebildeten Ventilraum (174) hinemragenden Kopfbereich (161) aufweist, wobei ein sich an den Kopfbereich anschließender durchmesserkleinerer Halsbereich (162) des dünnen Kolbens (160) in einer den Hohlraum abdichtenden Führung (151) bewegen kann, so dass die Bohrung (186) einenends durch den Führungsbereich verschlossen werden kann.
- Kraftstoffeinspritzeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Raum (35) mit dem Rückraum (38) über eine Drossel (47; 71; 180, 170) verbunden ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Drossel (71; 180, 170) im Kolben (36, 37; 86, 87; 150, 160) integriert ist.
- Kraftstoffeinspritzeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Raum (35) mit dem Rückraum (38) über ein Füllventil (49; 72; 140; 161, 176, 170) verbunden ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 9, dadurch gekennzeichnet, dass das Füllventil (72; 140; 161, 176, 170) im Kolben (36, 37; 86, 87; 150, 160) integriert ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Füllventil aus mindestens einer durchgängigen Bohrung (140; 170) im dicken Kolben (86; 150) besteht.
- Druckübersetzungseinrichtung zur Zwischenschaltung zwischen einem von einer Kraftstoffhochdruckquelle versorgbaren Kraftstoffinjektor (10, 80) einer Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen und der Kraftstoffhochdruckquelle (60), mit einem beweglichen Kolben, wobei der bewegliche Kolben einen an die Kraftstoffhochdruckquelle anschließbaren Raum von einem mit dem Kraftstoffinjektor (10, 80) verbindbaren Hochdruckraum sowie von einem Rückraum trennt, wobei der Hochdruckraum (40) mit dem Rückraum (38) über eine Kraftstoffleitung (46; 75; 88; 186) derart verbunden ist, so dass der Hochdruckraum über den Rückraum mit dem Hochdruck der Kranstoffhochdruckquelle befüllt werden kann, wobei der Rückraum (38) über ein Steuerventil (31) mit einer Niederdruckleitung (32) verbunden ist und wobei durch Befüllen des Rückraumes mit Kraftstoff beziehungsweise durch Entleeren des Rückraums von Kraftstoff der Kraftstoffdruck im Hochdruckraum variiert werden kann, wobei an der Kraftstoffleitung (46; 75; 88; 186) ein Ventil, insbesondere ein Rückschlagventil (45; 74; 94; 151, 185), angeordnet ist, so dass ein Rückfluss von Kraftstoff aus dem Hochdruckraum in den Rückraum unterbunden werden kann, dadurch gekennzeichnet, dass die Kraftstoffleitung (46; 75; 88; 186) und das Ventil (45; 74; 94; 151, 185) im Kolben (36, 37; 86, 87; 150, 160) integriert sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10123911 | 2001-05-17 | ||
DE10123911A DE10123911A1 (de) | 2001-05-17 | 2001-05-17 | Kraftstoffeinspritzeinrichtung mit Druckübersetzungseinrichtung und Druckübersetzungseinrichtung |
PCT/DE2002/001552 WO2002092998A1 (de) | 2001-05-17 | 2002-04-27 | Kraftstoffeinspritzeinrichtung mit druckübersetzungseinrichtung und druckübersetzungseinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1392966A1 EP1392966A1 (de) | 2004-03-03 |
EP1392966B1 true EP1392966B1 (de) | 2005-07-06 |
Family
ID=7685050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02740297A Expired - Lifetime EP1392966B1 (de) | 2001-05-17 | 2002-04-27 | Kraftstoffeinspritzeinrichtung mit druckübersetzungseinrichtung und druckübersetzungseinrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US7059303B2 (de) |
EP (1) | EP1392966B1 (de) |
JP (1) | JP4125964B2 (de) |
KR (1) | KR20040002960A (de) |
DE (2) | DE10123911A1 (de) |
WO (1) | WO2002092998A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1826397A3 (de) * | 2002-05-03 | 2009-08-05 | Delphi Technologies, Inc. | Kraftstoffeinspritzsystem |
DE10229412A1 (de) * | 2002-06-29 | 2004-01-29 | Robert Bosch Gmbh | Kraftstoffinjektor mit Druckübersetzer für Mehrfacheinspritzung |
DE10247903A1 (de) * | 2002-10-14 | 2004-04-22 | Robert Bosch Gmbh | Druckverstärkte Kraftstoffeinspritzeinrichtung mit innenliegender Steuerleitung |
DE10248467A1 (de) * | 2002-10-17 | 2004-05-06 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung mit Druckübersetzer und fördermengenreduziertem Niederdruckkreis |
DE10251679A1 (de) * | 2002-11-07 | 2004-05-19 | Robert Bosch Gmbh | Druckverstärker mit hubabhängiger Bedämpfung |
DE10251932B4 (de) * | 2002-11-08 | 2007-07-12 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung mit integriertem Druckverstärker |
DE10329732A1 (de) * | 2003-07-02 | 2005-02-03 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem für Brennkraftmaschinen |
US7455049B2 (en) * | 2004-02-11 | 2008-11-25 | Mazrek Ltd. | Actuating mechanism for hydraulically driven pump-injector for internal combustion engines |
DE102004010760A1 (de) * | 2004-03-05 | 2005-09-22 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit Nadelhubdämpfung |
DE102004017304A1 (de) * | 2004-04-08 | 2005-10-27 | Robert Bosch Gmbh | Servoventilangesteuerter Kraftstoffinjektor |
FR2872865B1 (fr) * | 2004-07-07 | 2009-01-16 | Renault Sas | Dispositif d'injection a rampe commune avec amortissement des ondes de pression |
DE102004051757A1 (de) * | 2004-10-23 | 2006-04-27 | Robert Bosch Gmbh | Kraftstoffinjektor mit hydraulisch betätigbarem Druckübersetzer |
WO2006058444A1 (de) * | 2004-12-03 | 2006-06-08 | Ganser-Hydromag Ag | Brennstoffeinspritzventil mit druckverstärkung |
DE102005042652A1 (de) | 2005-09-08 | 2007-03-15 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit einem integrierten Druckverstärker |
US20090126689A1 (en) * | 2007-11-16 | 2009-05-21 | Caterpillar Inc. | Fuel injector having valve with opposing sealing surfaces |
DE102008003347A1 (de) * | 2008-01-07 | 2009-07-09 | Robert Bosch Gmbh | Druckverstärkeranordnung |
FI122557B (fi) * | 2009-04-02 | 2012-03-30 | Waertsilae Finland Oy | Mäntämoottorin polttoaineenruiskutusjärjestely |
DE102009026567A1 (de) * | 2009-05-29 | 2010-12-02 | Robert Bosch Gmbh | Kraftstoffinjektor mit Druckverstärkerkolben |
DE102010008467A1 (de) * | 2010-02-18 | 2011-08-18 | Continental Automotive GmbH, 30165 | Hochdruck-Kraftstoff-Einspritzventil für einen Verbrennungsmotor |
DE102012204107A1 (de) * | 2012-03-15 | 2013-09-19 | Robert Bosch Gmbh | Dosiervorrichtung |
DE102012207842A1 (de) * | 2012-05-10 | 2013-11-14 | Continental Automotive Gmbh | Einspritzventil |
AT515933B1 (de) * | 2015-01-02 | 2016-01-15 | Ge Jenbacher Gmbh & Co Og | Kraftstoffinjektor |
CN111608835B (zh) * | 2020-05-29 | 2021-04-20 | 重庆红江机械有限责任公司 | 一种气液双控增压泵 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001052916A2 (de) * | 2000-01-20 | 2001-07-26 | Robert Bosch Gmbh | Einspritzeinrichtung und verfahren zum einspritzen von fluid |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5726261A (en) * | 1980-07-24 | 1982-02-12 | Diesel Kiki Co Ltd | Fuel injector of internal combustion engine |
DE3048347A1 (de) * | 1980-12-20 | 1982-07-22 | Volkswagenwerk Ag, 3180 Wolfsburg | Kraftstoffeinspritzeinrichtung |
DE3102697A1 (de) * | 1980-12-20 | 1982-10-21 | Volkswagenwerk Ag, 3180 Wolfsburg | Kraftstoffeinspritzeinrichtung |
JPS57124073A (en) * | 1981-01-24 | 1982-08-02 | Diesel Kiki Co Ltd | Fuel injection device |
DE3425460A1 (de) * | 1983-08-26 | 1985-03-07 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzeinrichtung zur definierten vor- und haupteinspritzung bei brennkraftmaschinen |
JPS6065271A (ja) * | 1983-09-19 | 1985-04-15 | Nippon Soken Inc | 内燃機関の燃料噴射装置 |
JPS61261653A (ja) * | 1985-05-16 | 1986-11-19 | Nippon Soken Inc | 燃料供給装置 |
JP2885076B2 (ja) * | 1994-07-08 | 1999-04-19 | 三菱自動車工業株式会社 | 蓄圧式燃料噴射装置 |
US6494182B1 (en) * | 1999-02-17 | 2002-12-17 | Stanadyne Automotive Corp. | Self-regulating gasoline direct injection system |
JP2002537513A (ja) * | 1999-02-17 | 2002-11-05 | スタナダイン・オートモーティヴ・コーポレイション | ガソリン直接噴射のための可変出力ポンプ |
DE19910970A1 (de) * | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
-
2001
- 2001-05-17 DE DE10123911A patent/DE10123911A1/de not_active Ceased
-
2002
- 2002-04-27 WO PCT/DE2002/001552 patent/WO2002092998A1/de active IP Right Grant
- 2002-04-27 EP EP02740297A patent/EP1392966B1/de not_active Expired - Lifetime
- 2002-04-27 JP JP2002590239A patent/JP4125964B2/ja not_active Expired - Fee Related
- 2002-04-27 DE DE50203576T patent/DE50203576D1/de not_active Expired - Lifetime
- 2002-04-27 US US10/478,006 patent/US7059303B2/en not_active Expired - Fee Related
- 2002-04-27 KR KR10-2003-7014787A patent/KR20040002960A/ko not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001052916A2 (de) * | 2000-01-20 | 2001-07-26 | Robert Bosch Gmbh | Einspritzeinrichtung und verfahren zum einspritzen von fluid |
Also Published As
Publication number | Publication date |
---|---|
US7059303B2 (en) | 2006-06-13 |
DE50203576D1 (de) | 2005-08-11 |
EP1392966A1 (de) | 2004-03-03 |
JP4125964B2 (ja) | 2008-07-30 |
US20040149265A1 (en) | 2004-08-05 |
JP2004525304A (ja) | 2004-08-19 |
KR20040002960A (ko) | 2004-01-07 |
WO2002092998A1 (de) | 2002-11-21 |
DE10123911A1 (de) | 2002-11-28 |
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