EP1171706B1 - Kraftstoffinjektor für eine brennkraftmaschine - Google Patents
Kraftstoffinjektor für eine brennkraftmaschine Download PDFInfo
- Publication number
- EP1171706B1 EP1171706B1 EP00926906A EP00926906A EP1171706B1 EP 1171706 B1 EP1171706 B1 EP 1171706B1 EP 00926906 A EP00926906 A EP 00926906A EP 00926906 A EP00926906 A EP 00926906A EP 1171706 B1 EP1171706 B1 EP 1171706B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- fuel
- nozzle
- nozzle needle
- needle
- 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 abstract description 112
- 238000002485 combustion reaction Methods 0.000 title claims description 13
- 241000272165 Charadriidae Species 0.000 claims description 14
- 230000009471 action Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241001504470 Motacillidae Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing 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
- 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
Definitions
- the invention relates to a fuel injector for injecting under high pressure available fuel in the combustion chamber of an internal combustion engine, as in The preamble of claim 1 is required (see EP-A-582 993).
- Such a known fuel injector comprises an injector housing and a nozzle needle, one in a first guide bore formed in the injector housing longitudinally displaceable nozzle needle shaft and one with one in the front end of the Injector housing trained valve seat in the sense of opening and closing a Has valve opening cross section interacting nozzle needle tip.
- a high pressure duct intended.
- the nozzle needle shaft of the fuel to be injected via the high-pressure channel under high Pressure upstream of the nozzle antechamber.
- With the nozzle needle is one from below high pressure fuel coupled control chamber coupled by means of a control valve in the sense of opening the nozzle needle can be relieved of pressure.
- At the Back of the first guide hole there is a space which is separated from the Receives anteroom passing over the first guide bore fuel.
- a disadvantage with such a fuel injector is that between the Anteroom and the arranged at the back of the first guide hole Space as well as between the control room and this room a significant leak occurs, which are in the range of up to 20 or 30% of the maximum injection quantity can.
- the object of the invention is a fuel injector of the type described above train that this leakage is avoided.
- the fuel injector according to the invention is for injecting under high pressure provided fuel is provided in the combustion chamber of an internal combustion engine.
- the Fuel injector includes an injector housing and a nozzle needle, one in one in the first guide bore formed in the injector housing is longitudinally displaceable mounted nozzle needle shaft and one with one in the front end of the injector housing trained valve seat in the sense of opening and closing a Has valve opening cross section interacting nozzle needle tip.
- On High-pressure duct is used for supplying those to be injected under high pressure Fuel.
- the nozzle needle shaft of the fuel At the front of the first guide bore is the nozzle needle shaft of the fuel to be injected via the high-pressure channel under high Pressure upstream of the nozzle antechamber.
- the nozzle needle is one from below high pressure fuel coupled control chamber coupled by means of a control valve in the sense of opening the nozzle needle can be relieved of pressure.
- At the At the back of the first guide hole there is a space which is separated from the Nozzle vestibule via the first guide hole or from the control chamber Absorbs fuel.
- the invention is that on the back of the first Guide hole arranged a high pressure fuel pressurized high pressure room.
- the main advantage of the fuel injector according to the invention is that at the There is no space on the back of the first guide bore guiding the nozzle needle which is at a low pressure level so that no leakage occurs over it can.
- the invention contains the rear high-pressure space forming control chamber acting on the nozzle needle in the closing direction Return spring.
- the return spring is advantageously formed by a plate spring arrangement.
- the return spring at one end by a Back of the nozzle needle shaft provided first abutment and at the other end supported by a second abutment formed on the rear of the control room is.
- the rear is Control room forming high-pressure space through a lengthwise direction of the injector housing running hole formed and at its back by a hole in this used valve body of the control valve limited.
- the control space forming the rear high-pressure space is preferably above a Throttle channel with the high pressure channel leading the fuel to be injected in Connection.
- the rear high-pressure space is through one separate from the control room, one the nozzle needle in the closing direction acting spring-containing spring chamber formed.
- the spring chamber is preferably in flow communication with the High-pressure channel leading to the fuel to be injected.
- the fuel injector according to the invention is at the rear of the high-pressure chamber forming the spring chamber coaxially to the first leading the nozzle needle shaft Guide bore extending second guide bore formed in which a a needle stilts with the nozzle needle coupled guide piston in the longitudinal direction is slidably mounted, which limits the spring space at the rear.
- the control chamber is preferably formed on the rear of the guide piston, the fuel in the spring chamber under high pressure and the return spring act on the nozzle needle shaft in the sense of closing the nozzle needle and the Nozzle needle when the control chamber is relieved of pressure by means of the control valve Guide piston is relieved in the sense of opening.
- the first guide bore leading the nozzle needle shaft preferably has one Diameter D1, and the spring chamber is through a to the first guide bore coaxial third bore formed, the diameter D2 larger than the diameter D1 the first guide hole is, and the control room is through to the first Guide bore and the spring chamber coaxial second guide bore with a Diameter D1 'formed.
- the Diameters D1, D1 'and D2 are coordinated so that the needle stilts both is only subjected to tension when opening and when closing the nozzle needle. This will result in a buckling or a one-sided contact of the nozzle needle stilts, which leads to jamming could be avoided.
- the first guide bore and the second guide hole the same diameter D1.
- the advantage of this is one Simplification in the manufacture of the fuel injector.
- the return spring is at one end by first abutment provided on the rear of the nozzle needle shaft and on the other End by a second abutment formed on the back of the spring chamber supported.
- the control chamber preferably has a significantly smaller volume than the spring chamber.
- the injector housing at the rear end with the High-pressure channel leading to the fuel to be injected Contains individual storage for holding fuel under high pressure.
- individual store is in particular in the fuel injector after the first Realize embodiment of the invention in which the rear high pressure space is formed by the control room, since in this embodiment an essential measure in terms of overall length, which can be used for the individual storage.
- the total with the Fuel injector designated by reference numeral 300 comprises an injector housing 301, in which a nozzle needle 303 with a nozzle needle shaft 304 in one in the Injector housing 301 formed first guide bore 302 is longitudinally displaceable is stored.
- the nozzle needle 303 has a nozzle needle tip 305 which is in contact with an front end of the injector housing 301 formed valve seat 306 in the sense of a Opening and closing a valve opening cross-section that interacts between the needle tip 305 and the valve seat 306 is provided.
- a high pressure channel 307 is provided for supplying fuel to be injected under high pressure, which is supplied via a pressure connection 329.
- the fuel comes in one Oil-elastic pressure accumulator (common rail) held under high pressure, in which it is promoted from a fuel supply by means of a high-pressure pump (not in the figure ) Shown.
- This is at the front of the first guide bore 302
- Nozzle needle shaft 304 in front of a nozzle antechamber 308 in the injector housing 301 provided, that of the injected via the high pressure channel 307 to be injected Fuel is pressurized under high pressure.
- a control room 309 that has a the high-pressure channel 307 connected throttle channel 314 with under high Pressurized fuel is applied via a needle stilts 322, which in a guide sleeve 330 arranged in the injector housing 301 in the longitudinal direction of the Fuel injector 300 is slidably coupled to the nozzle needle 303.
- a control valve 310 is provided at the rear of the control chamber 309 Valve body 312 and a closing body 313 is formed.
- the closing body 313 of the Control valve 310 is operatively coupled to a solenoid 326, through which the control valve 310 is opened and closed.
- nozzle needle 303 Surrounding the front end of the needle stilts 322 is in the low pressure space 331 between a first abutment provided on the back of the nozzle needle 303 320 and a second abutment 321 provided on the injector housing 301
- Return spring 316 is provided for closing the nozzle needle 303.
- the nozzle needle 303 is at pressure relief of the control room 309 via the control valve 310 by the in Antechamber 308 opened on fuel pressure acting on nozzle needle shaft 304.
- the in the pressure relief of the control chamber 309 via the control valve 310 final The amount of fuel together with the amount of fuel from the low pressure space 331 discharged via a leakage channel 332.
- Fuel injector for injecting high-pressure fuel into the Combustion chamber of an internal combustion engine can be described. Similar to that known fuel injector is in the one shown here, overall with the reference symbol 100 designated fuel injector in an injector housing 101, a nozzle needle 103 with a nozzle needle shaft 104 in a formed in the injector housing 101 first guide bore 102 mounted longitudinally.
- the nozzle needle 103 is on its front end a nozzle needle tip 105, which is in the front end of the Injector housing 101 formed valve seat 106 in the sense of opening and closing of a valve opening cross-section which interacts between the nozzle needle tip 105 and the valve seat 106 is provided.
- a high pressure channel 107 in the Injector housing 101 For feeding under high pressure standing fuel to be injected is a high pressure channel 107 in the Injector housing 101 is formed.
- the fuel to be injected is a Pressure port 129 supplied from an oil-elastic memory (common rail), too which the fuel from a fuel supply by means of a high pressure pump is promoted (not shown). This is at the front of the first guide bore 102 Nozzle needle shaft 104 in front of a nozzle antechamber 108, which of the over the High pressure channel 107 supplied fuel to be injected under high pressure is acted upon.
- a control room 109 is formed in the injector housing 101, which over a throttle channel 114 connected to the high-pressure channel 107 with below high pressure fuel is applied.
- the control room 109 is through a Control chamber bore 111 is formed in the injector housing 101 and is on its rear side through a valve body 112 inserted into the control chamber bore 111 Control valve 110 limited.
- a closing body 113 of the control valve 110 is with a rear end of the injector housing 101 provided solenoid 126 functionally coupled.
- a return spring 116 is arranged in the control chamber 109, which is provided between one on the rear of the nozzle needle shaft 104 first abutment 120 and one through the front of the valve body 112 of the Control valve 110 formed second abutment 121 is supported.
- FIG. 2 shows a second exemplary embodiment of a fuel injector according to the invention for injecting high-pressure fuel into the combustion chamber Internal combustion engine shown.
- Fuel injector comprises an injector housing 201, in which a nozzle needle 203 also a nozzle needle shaft 204 in a first one formed in the injector housing 201 Guide bore 201 is mounted to be longitudinally displaceable.
- the nozzle needle 203 has one Nozzle needle tip 205, which with a in the front end of the injector housing 201 trained valve seat 206 in the sense of opening and closing one Valve opening cross-section cooperates between the nozzle needle tip 205 and the valve seat 206 is formed.
- a high pressure channel 207 for feeding from under high Pressure fuel to be injected is formed in the injector housing 201 and communicates with a pressure port 229, which is the one to be injected Fuel is supplied from an oil-elastic storage tank (common rail) to which the Fuel is supplied by a high pressure pump from a fuel supply (not shown).
- a nozzle vestibule 208 is formed, which via the high pressure channel 207 under high Pressure is applied by the fuel to be injected.
- a control chamber 209 is formed which communicates with the High pressure passage 207 communicating throttle passage 214 with high pressure standing fuel and is depressurized by means of a control valve 207 is.
- a high-pressure chamber 215 is provided, which by a Nozzle needle 203 containing restoring spring 216 acting in the closing direction Spring chamber 215 is formed.
- the spring chamber 215 is separated from the control chamber 209 by an in a second guide bore which is coaxial with the first guide bore 202 218 guide piston 219 mounted for longitudinal displacement.
- the guide piston 219 is coupled to the back of the nozzle needle 203 via a needle stilts 222, whereby a coupling of the control chamber 209 with the nozzle needle 203 is established.
- the Guide piston 219 thus delimits the spring space 215 on its rear side.
- the Spring chamber 215 is connected to the one to be injected via a flow connection 217 fuel-carrying high pressure channel 207 connected so that inside the spring chamber 215 the same high pressure as in the high pressure channel 207 and thus in the Antechamber 208 prevails.
- a flow connection 217 fuel-carrying high pressure channel 207 connected so that inside the spring chamber 215 the same high pressure as in the high pressure channel 207 and thus in the Antechamber 208 prevails.
- the one in Spring chamber 215 pressurized fuel acting together with the Force of the return spring 215 the nozzle needle shaft 204 in the sense of closing the Nozzle needle 203, while nozzle needle 203 relieves pressure in control chamber 209 by means of the control valve 210 through the guide piston 219 via the needle stilts 222 in Relieved of opening.
- the control valve 210 includes a valve body 212 and a closing body 213, which is used to operate the fuel injector controlling solenoid 226 is operatively coupled.
- the in the spring space 215 return spring 216 is arranged at one end by a at the rear of the Nozzle needle shaft 204 provided first abutment 220 and at the other end a second abutment 221 formed on the rear of the spring chamber 215 supported.
- the first guide bore 202 leading the nozzle needle shaft 204 has one Diameter D1, which forms the spring space 215 to the first guide bore 202
- Diameter D1, D1 'and D2 in the present embodiment only that Both diameters D1 and D2 are matched to one another so that the needle stilts 222 both when opening and when closing the nozzle needle 203 only under tension is. This causes a buckling or one-sided contact of the needle stilts 222, what could lead to jamming.
- the control chamber 209 has a much smaller volume than the spring chamber 215, which improves the response of the fuel injector.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Figur 1
- einen etwas schematisierten Längsschnitt durch einen Kraftstoffinjektor gemäß einem ersten Ausführungsbeispiel der Erfindung, bei dem der an der Rückseite der ersten Führungsbohrung ausgebildete Hochdruckraum durch den Steuerraum gebildet ist;
- Figur 2
- einen etwas schematisierten Längsschnitt durch einen Kraftstoffinjektor gemäß einem zweiten Ausführungsbeispiel der Erfindung, bei dem der rückseitige Hochdruckraum durch einen vom Steuerraum getrennten, eine die Düsennadel in Schließrichtung beaufschlagende Rückstellfeder enthaltenden Federraum gebildet ist; und
- Figur 3
- einen etwas schematisierten Längsschnitt durch einen Kraftstoffinjektor nach dem Stand der Technik, bei dem zwischen Düsennadel und Steuerraum ein Niederdruckraum ausgebildet ist, über welchen eine vom Düsenvorraum über die erste Führungsbohrung und eine vom Steuerraum übertretende Kraftstoffmenge
- als
- Leckage abgeführt wird.
- 100; 200; 300
- Kraftstoffinjektor
- 101; 201; 301
- Injektorgehäuse
- 102; 202; 302
- (erste) Führungsbohrung
- 103; 203; 303
- Düsennadel
- 104; 204; 304
- Düsennadelschaft
- 105: 205; 305
- Düsennadelspitze
- 106; 206; 306
- Ventilsitz
- 107; 207; 307
- Hochdruckkanal
- 108; 208; 308
- Düsenvorraum
- 109; 209; 309
- Steuerraum
- 110; 210; 310
- Steuerventil
- 111; 211; 311
- Steuerraumbohrung
- 112; 212; 312
- Ventilkörper des Steuerventils
- 113; 213; 313
- Schließkörper des Steuerventils
- 114; 214; 314
- Drosselkanal
- 115; 215; 315
- Federraum
- 116; 216; 316
- Rückstellfeder
- 217
- Strömungsverbindung
- 218; 318
- zweite Führungsbohrung
- 219
- Führungskolben
- 120; 220; 320
- erstes Widerlager
- 121; 221; 321
- zweites Widerlager
- 222; 322
- Nadelstelze
- 323
- Steuerstange
- 324
- Leckageraum
- 325
- Leckagekanal
- 126; 226; 326
- Solenoid
- 127
- Einzelspeicher
- 228
- Federraumbohrung
- 129; 229; 329
- Druckanschluß
- 330
- Führungshülse
- 331
- Niederdruckraum
- 132; 232; 332
- Leckagekanal
Claims (16)
- Kraftstoffinjektor zum Einspritzen von unter hohem Druck vorgehaltenem Kraftstoff in den Brennraum einer Brennkraftmaschine, mit einem Injektorgehäuse (101;201), einer Düsennadel (103;203), die eine in einer in dem Injektorgehäuse (101;201) ausgebildeten ersten Führungsbohrung (102;202) längsverschieblich gelagerten Düsennadeischaft (104;204) und eine mit einem im vorderen Ende des Injektorgehäuses (101;201) ausgebildeten Ventilsitz (106;206) im Sinne eines Öffnens und Schließens eines Ventilöffnungsquerschnitts zusammenwirkende Düsennadelspitze (105;205) aufweist, einem Hochdruckkanal (107;207) zur Zuführung von unter hohem Druck stehendem einzuspritzenden Kraftstoff, einem an der Vorderseite der ersten Führungsbohrung (102;202) dem Düsennadelschaft (104;204) vorgelagerten, von dem über den Hochdruckkanal (107;207) zugeführten einzuspritzenden Kraftstoff unter hohem Druck beaufschlagten Düsenvorraum (108;208), einem mit der Düsennadel (103;203) gekoppelten, von unter hohem Druck stehendem Kraftstoff beaufschlagten Steuerraum (109;209), der mittels eines Steuerventils (110;210) im Sinne eines Öffnens der Düsennadel (103;203) druckentlastbar ist, und einem an der Rückseite der ersten Führungsbohrung (102;202) angeordneten Raum, weicher von dem Düsenvorraum (108; 208) über die erste Führungsbohrung (102;202) bzw. von dem Steuerraum (109;209) übertretenden Kraftstoff aufnimmt, daß der an der Rückseite der ersten Führungsbohrung (102;202) angeordnete Raum ein von unter hohem Druck stehendem Kraftstoff beaufschlagter Hochdruckraum (109;215) ist, dadurch gekennzeichnet, daß das Injektorgehäuse (101) am rückseitigen Ende einen mit dem den einzuspritzenden Kraftstoff führenden Hochdruckkanal (107) in Verbindung stehenden Einzelspeicher (127) zum Vorhalten von unter hohem Druck stehendem Kraftstoff enthält.
- Kraftstoffinjektor nach Anspruch 1, dadurch gekennzeichnet, daß der an der Rückseite der ersten Führungsbohrung (102) ausgebildete Hochdruckraum durch den Steuerraum (109) gebildet ist.
- Kraftstoffinjektor nach Anspruch 2, dadurch gekennzeichnet, daß der den rückseitigen Hochdruckraum bildenden Steuerraum (109) eine die Düsennadel (103) in Schließrichtung beaufschlagende Rückstellfeder (116) enthält.
- Kraftstoffinjektor nach Anspruch 3, dadurch gekennzeichnet, daß die Rückstellfeder (116) durch eine Tellerfederanordnung gebildet ist.
- Kraftstoffinjektor nach Anspruch 4, dadurch gekennzeichnet, daß die Rückstellfeder (116) an einem Ende durch ein an der Rückseite des Düsennadelschafts (104) vorgesehenes erstes Widerlager (120) und am anderen Ende durch ein an der Rückseite des Steuerraums (109) ausgebildetes zweites Widerlager (121) abgestützt ist.
- Kraftstoffinjektor nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der den rückseitigen Hochdruckraum bildende Steuerraum (109) durch eine in Längsrichtung des Injektorgehäuses (101) verlaufende Bohrung (111) gebildet und an seiner Rückseite durch einen in diese Bohrung (111) eingesetzten Ventilkörper (112) des Steuerventils (110) begrenzt ist.
- Kraftstoffinjektor nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der den rückseitigen Hochdruckraum bildende Steuerraum (109) über einen Drosselkanal (114) mit dem den einzuspritzenden Kraftstoff führenden Hochdruckkanal (107) in Verbindung steht.
- Kraftstoffinjektor nach Anspruch 1, dadurch gekennzeichnet, daß der rückseitige Hochdruckraum durch einen vom Steuerraum (209) getrennten eine die Düsennadel (203) in Schließrichtung beaufschlagende Rückstellfeder (216) enthaltenden Federraum (215) gebildet ist.
- Kraftstoffinjektor nach Anspruch 8, dadurch gekennzeichnet, daß der Federraum (215) über eine Strömungsverbindung (217) mit dem den einzuspritzenden Kraftstoff führenden Hochdruckkanal (207) in Verbindung steht.
- Kraftstoffinjektor nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß an der Rückseite des den Hochdruckraum bildenden Federraums (215) eine koaxial zu der den Düsennadelschaft (207) führenden ersten Führungsbohrung (202) verlaufende zweite Führungsbohrung (218) ausgebildet ist, in welcher ein über eine Nadelstelze (222) mit der Düsennadel (203) gekoppelter Führungskolben (219) in Längsrichtung verschieblich gelagert ist, der den Federraum (215) an dessen Rückseite begrenzt.
- Kraftstoffinjektor nach Anspruch 10, dadurch gekennzeichnet, daß der Steuerraum (209) an der Rückseite des Führungskolbens (219) ausgebildet ist, wobei der im Federraum (215) unter hohem Druck anstehende Kraftstoff und die Rückstellfeder (216) den Düsennadelschaft (204) im Sinne eines Schließens der Düsennadel (203) beaufschlagen und die Düsennadel (203) bei Druckentlastung des Steuerraums (209) mittels des Steuerventils (210) durch den Führungskolben (219) über die Nadelstelze (222) im Sinne eines Öffnens entlastet wird.
- Kraftstoffinjektor nach Anspruch 11, dadurch gekennzeichnet, daß die den Düsennadelschaft (204) führende erste Führungsbohrung (202) einen Durchmesser D1 hat, daß der Federraum (215) durch eine zu der ersten Führungsbohrung (202) koaxiale dritte Bohrung (228) gebildet ist, deren Durchmesser D2 größer als der Durchmesser D1 der ersten Führungsbohrung (202) ist, und daß der Steuerraum (209) durch die zu der ersten Führungsbohrung (202) und dem Federraum (215) koaxiale zweite Führungsbohrung (218) mit einem Durchmesser D1' gebildet ist.
- Kraftstoffinjektor nach Anspruch 12, dadurch gekennzeichnet, daß die Durchmesser D1, D1' und D2 so aufeinander abgestimmt sind, daß die Nadelstelze (222) sowohl beim Öffnen als auch beim Schließen der Düsennadel (203) nur auf Zug beansprucht ist.
- Kraftstoffinjektor einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß die erste Führungsbohrung (202) und die zweite Führungsbohrung (218) den gleichen Durchmesser D1 aufweisen.
- Kraftstoffinjektor nach einem der Ansprüche 8 bis 14, dadurch gekennzeichnet, daß die Rückstellfeder (216) an einem Ende durch ein an der Rückseite des Düsennadelschaftes (204) vorgesehenes erstes Widerlager (222) und am anderen Ende durch ein an der Rückseite des Federraums (215) ausgebildetes zweites Widerlager (221) abgestützt ist.
- Kraftstoffinjektor nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß der Steuerraum (209) ein wesentlich kleineres Volumen als der Federraum (215) aufweist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19917190 | 1999-04-16 | ||
| DE19917190A DE19917190A1 (de) | 1999-04-16 | 1999-04-16 | Kraftstoffinjektor für eine Brennkraftmaschine |
| PCT/EP2000/003319 WO2000063550A1 (de) | 1999-04-16 | 2000-04-13 | Kraftstoffinjektor für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1171706A1 EP1171706A1 (de) | 2002-01-16 |
| EP1171706B1 true EP1171706B1 (de) | 2004-10-13 |
Family
ID=7904769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00926906A Expired - Lifetime EP1171706B1 (de) | 1999-04-16 | 2000-04-13 | Kraftstoffinjektor für eine brennkraftmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6622932B1 (de) |
| EP (1) | EP1171706B1 (de) |
| JP (1) | JP2002542427A (de) |
| AT (1) | ATE279647T1 (de) |
| DE (2) | DE19917190A1 (de) |
| WO (1) | WO2000063550A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10031698A1 (de) * | 2000-06-29 | 2002-01-17 | Mtu Friedrichshafen Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
| DE10136157A1 (de) * | 2001-05-04 | 2002-08-29 | Mtu Friedrichshafen Gmbh | Kraftstoffinjektor |
| DE10123795B4 (de) * | 2001-05-16 | 2005-08-25 | Siemens Ag | Verfahren zur Simulation des Nutzens einer Systemoption für eine technische Einrichtung |
| DE10126370A1 (de) * | 2001-05-30 | 2002-12-19 | Bosch Gmbh Robert | Kraftstoffinjektor mit Düsennadeldämpfung |
| DE10139680A1 (de) * | 2001-08-11 | 2003-02-27 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE10149659C1 (de) * | 2001-10-09 | 2003-01-09 | Mtu Friedrichshafen Gmbh | Injektor |
| USD495341S1 (en) | 2003-03-19 | 2004-08-31 | Stanadyne Corporation | Combined integrated injection line and injection nozzle |
| EP1795738A1 (de) * | 2005-12-12 | 2007-06-13 | C.R.F. Societa Consortile per Azioni | Kraftstoffeinspritzsystem für eine Verbrennungskraftmaschine und dazugehöriges Kraftstoff-Einspritz-Verfahren |
| GB0723785D0 (en) * | 2007-12-05 | 2008-01-16 | Delphi Tech Inc | Compression sleeve for internal combustion engine components |
| DE102009007095A1 (de) * | 2009-02-02 | 2010-08-05 | Continental Automotive Gmbh | Einspritzventil |
| DE102014002262A1 (de) * | 2014-02-20 | 2015-08-20 | Man Diesel & Turbo Se | Fluidbetriebenes Ventil |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH669822A5 (de) * | 1986-02-12 | 1989-04-14 | Sulzer Ag | |
| DE4214324C2 (de) | 1992-04-30 | 1998-04-30 | Knecht Filterwerke Gmbh | Vorrichtung zur Abscheidung von ölhaltigen Aerosolen |
| JPH0666219A (ja) * | 1992-08-11 | 1994-03-08 | Nippondenso Co Ltd | ディーゼル機関用燃料噴射装置 |
| US5467757A (en) * | 1993-08-20 | 1995-11-21 | Toyota Jidosha Kabushiki Kaisha | Compression-ignition type engine and combustion method of same |
| DE4332837C1 (de) * | 1993-09-27 | 1994-07-21 | Daimler Benz Ag | Kraftstoffeinspritzsystem für eine Brennkraftmaschine mit einer den Kraftstoff in einen Speicher fördernden Hochdruckpumpe |
| CH689267A5 (de) * | 1994-05-02 | 1999-01-15 | Eth Christian Mathis Dipl Ing | Einspritzventil fuer eine Kraftstoffeinspritzanlage einer Brennkraftmaschine, insbesondere eines Dieselmotors. |
| JP3653882B2 (ja) * | 1996-08-31 | 2005-06-02 | いすゞ自動車株式会社 | エンジンの燃料噴射装置 |
| JP3823391B2 (ja) * | 1996-08-31 | 2006-09-20 | いすゞ自動車株式会社 | エンジンの燃料噴射装置 |
| GB9623469D0 (en) * | 1996-11-12 | 1997-01-08 | Lucas Ind Plc | Injector |
-
1999
- 1999-04-16 DE DE19917190A patent/DE19917190A1/de not_active Ceased
-
2000
- 2000-04-13 DE DE2000508236 patent/DE50008236D1/de not_active Expired - Lifetime
- 2000-04-13 AT AT00926906T patent/ATE279647T1/de active
- 2000-04-13 US US09/958,804 patent/US6622932B1/en not_active Expired - Lifetime
- 2000-04-13 EP EP00926906A patent/EP1171706B1/de not_active Expired - Lifetime
- 2000-04-13 WO PCT/EP2000/003319 patent/WO2000063550A1/de not_active Ceased
- 2000-04-13 JP JP2000612616A patent/JP2002542427A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP1171706A1 (de) | 2002-01-16 |
| JP2002542427A (ja) | 2002-12-10 |
| US6622932B1 (en) | 2003-09-23 |
| ATE279647T1 (de) | 2004-10-15 |
| DE19917190A1 (de) | 2000-10-26 |
| DE50008236D1 (de) | 2004-11-18 |
| WO2000063550A1 (de) | 2000-10-26 |
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