EP1114247A1 - Common-rail-injektor - Google Patents
Common-rail-injektorInfo
- Publication number
- EP1114247A1 EP1114247A1 EP00949125A EP00949125A EP1114247A1 EP 1114247 A1 EP1114247 A1 EP 1114247A1 EP 00949125 A EP00949125 A EP 00949125A EP 00949125 A EP00949125 A EP 00949125A EP 1114247 A1 EP1114247 A1 EP 1114247A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- common rail
- pressure
- chamber
- nozzle needle
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
-
- 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
- a high-pressure pump delivers the fuel to the central high-pressure accumulator, which is referred to as the common rail.
- High-pressure lines lead from the high-pressure accumulator to the individual injectors that are assigned to the engine cylinders.
- the injectors are individually controlled by the engine electronics.
- the rail pressure is present in the pressure chamber and on the control valve. When the control valve opens, the nozzle needle lifts off its seat and high-pressure fuel is injected into the combustion chamber of the internal combustion engine.
- Another special embodiment of the invention is characterized in that the nozzle needle is guided between the control chamber and the pressure chamber.
- the nozzle needle of the injector according to the invention can be made shorter than conventional nozzle needles. A guide is therefore sufficient to ensure that the injector functions properly.
- a central axial bore 12 extends in the nozzle needle 4 up to the height of a pressure chamber 15.
- two radial through holes 13 and 14 are arranged crosswise in the nozzle needle 4. The radial bores 13 and 14 create a connection between the pressure chamber 15 and the axial bore 12.
Landscapes
- 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)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19933328 | 1999-07-16 | ||
| DE19933328A DE19933328A1 (de) | 1999-07-16 | 1999-07-16 | Common-Rail-Injektor |
| PCT/DE2000/002060 WO2001006111A1 (de) | 1999-07-16 | 2000-06-24 | Common-rail-injektor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1114247A1 true EP1114247A1 (de) | 2001-07-11 |
| EP1114247B1 EP1114247B1 (de) | 2004-10-13 |
Family
ID=7914977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00949125A Expired - Lifetime EP1114247B1 (de) | 1999-07-16 | 2000-06-24 | Common-rail-injektor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6568368B1 (de) |
| EP (1) | EP1114247B1 (de) |
| JP (1) | JP2003504556A (de) |
| KR (1) | KR100692885B1 (de) |
| DE (2) | DE19933328A1 (de) |
| WO (1) | WO2001006111A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10054991A1 (de) * | 2000-11-07 | 2002-05-29 | Bosch Gmbh Robert | Druckgesteuerter Injektor zum Einspritzen von Kraftstoff mit Doppelventil |
| DE10155187B4 (de) * | 2001-11-12 | 2007-08-16 | L'orange Gmbh | Einspritzinjektor für Brennkraftmaschinen |
| DE10160490B4 (de) * | 2001-12-08 | 2005-10-06 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung, Kraftstoffsystem sowie Brennkraftmaschine |
| DE10326043A1 (de) * | 2003-06-10 | 2004-12-30 | Robert Bosch Gmbh | Einspritzdüse für Brennkraftmaschinen |
| US7464697B2 (en) | 2005-08-19 | 2008-12-16 | The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency | High-pressure fuel intensifier system |
| DE102007011685A1 (de) * | 2007-03-09 | 2008-09-11 | Robert Bosch Gmbh | Kraftstoffinjektor mit verbessertem Steuerventil |
| WO2018098308A1 (en) * | 2016-11-22 | 2018-05-31 | Cummins Inc. | Injector method of switching between injection state and drain state |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442451A (en) * | 1967-06-14 | 1969-05-06 | Gen Motors Corp | Dual stage accumulator type fuel injector |
| US3669354A (en) * | 1970-09-08 | 1972-06-13 | J & T Eng Ascot Ltd | Fluid injectors |
| US4462368A (en) * | 1980-07-10 | 1984-07-31 | Diesel Kiki Company, Ltd. | Fuel injection system for internal combustion engine |
| US4667638A (en) * | 1984-04-17 | 1987-05-26 | Nippon Soken, Inc. | Fuel injection apparatus for internal combustion engine |
| DE3767260D1 (de) * | 1986-09-25 | 1991-02-14 | Ganser Hydromag | Kraftstoffeinspritzventil. |
| US5301875A (en) * | 1990-06-19 | 1994-04-12 | Cummins Engine Company, Inc. | Force balanced electronically controlled fuel injector |
| US5647536A (en) * | 1995-01-23 | 1997-07-15 | Cummins Engine Company, Inc. | Injection rate shaping nozzle assembly for a fuel injector |
| DE19647304C1 (de) * | 1996-11-15 | 1998-01-22 | Daimler Benz Ag | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
| US5860597A (en) * | 1997-03-24 | 1999-01-19 | Cummins Engine Company, Inc. | Injection rate shaping nozzle assembly for a fuel injector |
| US5899389A (en) * | 1997-06-02 | 1999-05-04 | Cummins Engine Company, Inc. | Two stage fuel injector nozzle assembly |
| DE19724637A1 (de) * | 1997-06-11 | 1998-12-17 | Bosch Gmbh Robert | Einspritzventil |
| DE19744518A1 (de) * | 1997-10-09 | 1999-04-15 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| US6079641A (en) * | 1998-10-13 | 2000-06-27 | Caterpillar Inc. | Fuel injector with rate shaping control through piezoelectric nozzle lift |
| GB9916464D0 (en) * | 1999-07-14 | 1999-09-15 | Lucas Ind Plc | Fuel injector |
| US6408821B1 (en) * | 2000-12-19 | 2002-06-25 | Caterpillar Inc. | Fuel injection system with common actuation device and engine using same |
-
1999
- 1999-07-16 DE DE19933328A patent/DE19933328A1/de not_active Ceased
-
2000
- 2000-06-24 WO PCT/DE2000/002060 patent/WO2001006111A1/de not_active Ceased
- 2000-06-24 KR KR1020017003262A patent/KR100692885B1/ko not_active Expired - Fee Related
- 2000-06-24 EP EP00949125A patent/EP1114247B1/de not_active Expired - Lifetime
- 2000-06-24 US US09/787,373 patent/US6568368B1/en not_active Expired - Fee Related
- 2000-06-24 DE DE2000508218 patent/DE50008218D1/de not_active Expired - Lifetime
- 2000-06-24 JP JP2001510718A patent/JP2003504556A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0106111A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003504556A (ja) | 2003-02-04 |
| KR100692885B1 (ko) | 2007-03-12 |
| DE19933328A1 (de) | 2001-01-25 |
| KR20010075090A (ko) | 2001-08-09 |
| WO2001006111A1 (de) | 2001-01-25 |
| DE50008218D1 (en) | 2004-11-18 |
| US6568368B1 (en) | 2003-05-27 |
| EP1114247B1 (de) | 2004-10-13 |
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