EP0976924A3 - Servo valve for an injector and injector - Google Patents
Servo valve for an injector and injector Download PDFInfo
- Publication number
- EP0976924A3 EP0976924A3 EP99112980A EP99112980A EP0976924A3 EP 0976924 A3 EP0976924 A3 EP 0976924A3 EP 99112980 A EP99112980 A EP 99112980A EP 99112980 A EP99112980 A EP 99112980A EP 0976924 A3 EP0976924 A3 EP 0976924A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- chamber
- injection
- injector
- servo 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.)
- 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
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
-
- 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
- F02M63/0045—Three-way valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Das Einspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine weist einen Steuerraum (4) auf, der über eine Zulaufbohrung (2) mit einem Raum (20) und eine Zulaufdrossel (3) mit einem Hochdruckspeicher in Verbindung steht und der über eine Ablaufdrossel (10) in einer Ablaufbohrung (9) und über die Ventilkammer (22) des Servoventils (12) mit einem drucklosen Rücklauf (14) zu einem Kraftstofftank in Verbindung gebracht werden kann. Der im Steuerraum (4) herrschende Druck wirkt auf einen beweglichen Düsenkörper (6) ein, der mit einer Düsennadel versehen ist, die bei der Bewegung des Düsenkörpers (6) Einspritzlöcher (7) freigibt und verschließt. Das Servoventil (12) umfaßt einen beweglichen Ventilkörper (26), der von einem Aktor (18) betätigt wird und der selektiv an einem Anschlag (24) zwischen dem Raum (20) und der Ventilkammer (22) oder an einem Ventilsitz (28) zwischen der Ventilkammer (22) und dem Rücklauf (14) zur Anlage kommen kann. Wenn der Ventilkörper (26) am Ventilsitz (28) anliegt, kann der Kraftstoff zum Schließen des Einspritzventils über die Zulaufdrossel (3) und außerdem über die Ventilkammer (22) des Servoventils und die Ablaufdrossel (10) in den Steuerraum (4) strömen. The injection valve for the injection of fuel into an internal combustion engine has a control chamber (4), which is connected to a chamber (20) via an inlet bore (2) and an inlet throttle (3) to a high-pressure accumulator and which is connected via an outlet throttle (10 ) in a drain hole (9) and via the valve chamber (22) of the servo valve (12) with an unpressurized return (14) can be connected to a fuel tank. The pressure prevailing in the control chamber (4) acts on a movable nozzle body (6) which is provided with a nozzle needle which, when the nozzle body (6) moves, releases and closes injection holes (7). The servo valve (12) comprises a movable valve body (26) which is actuated by an actuator (18) and which is selectively connected to a stop (24) between the space (20) and the valve chamber (22) or to a valve seat (28) can come to rest between the valve chamber (22) and the return (14). When the valve body (26) rests on the valve seat (28), the fuel for the closing of the injection valve can flow into the control chamber (4) via the inlet throttle (3) and also via the valve chamber (22) of the servo valve and the outlet throttle (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19834667 | 1998-07-31 | ||
DE19834667 | 1998-07-31 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0976924A2 EP0976924A2 (en) | 2000-02-02 |
EP0976924A3 true EP0976924A3 (en) | 2001-06-13 |
EP0976924B1 EP0976924B1 (en) | 2003-09-17 |
Family
ID=7876057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99112980A Expired - Lifetime EP0976924B1 (en) | 1998-07-31 | 1999-07-05 | Injector with a servo valve |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0976924B1 (en) |
DE (1) | DE59906995D1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19939450A1 (en) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
JP4048699B2 (en) | 1999-11-10 | 2008-02-20 | 株式会社デンソー | Fuel injection valve |
DE10015268A1 (en) | 2000-03-28 | 2001-10-04 | Siemens Ag | Injector with bypass throttle |
DE10024703A1 (en) * | 2000-05-18 | 2001-11-22 | Bosch Gmbh Robert | Injection arrangement for fuel storage injection system has valve unit blocking auxiliary channel and outlet path in alternation |
DE10024702A1 (en) * | 2000-05-18 | 2001-11-22 | Bosch Gmbh Robert | Fuel injector for storage injection system includes bypass channel injecting into outlet path at valve chamber |
DE10063698A1 (en) | 2000-12-20 | 2002-07-04 | Siemens Ag | High-pressure injection system with a control throttle as a cascade throttle |
JP3556921B2 (en) * | 2001-04-27 | 2004-08-25 | 株式会社日本自動車部品総合研究所 | Fuel injection valve |
DE10123775B4 (en) * | 2001-05-16 | 2005-01-20 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines, in particular common rail injector, and fuel system and internal combustion engine |
DE10131642A1 (en) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Fuel injector with variable control room pressurization |
DE10131618A1 (en) * | 2001-06-29 | 2003-01-23 | Bosch Gmbh Robert | Fuel injector with switchable control room inlet |
DE10131619A1 (en) * | 2001-06-29 | 2003-01-23 | Bosch Gmbh Robert | Fuel injector with injection course shaping |
DE10131640A1 (en) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Fuel injector with injection course shaping through switchable throttle elements |
DE10132249A1 (en) * | 2001-07-04 | 2003-01-23 | Bosch Gmbh Robert | Fuel injector with force-balanced control valve |
JP3864764B2 (en) * | 2001-11-22 | 2007-01-10 | 株式会社デンソー | Fuel injection valve |
US7331329B2 (en) | 2002-07-15 | 2008-02-19 | Caterpillar Inc. | Fuel injector with directly controlled highly efficient nozzle assembly and fuel system using same |
DE102005046743B3 (en) * | 2005-09-29 | 2007-05-16 | Siemens Ag | Method for determining time point of stopper of valve body in drain valve actuated by electromechanical actuator, involves electrical control of actuator during load phase, so that stroke produced by actuator opens drain valve mechanically |
US8544771B2 (en) | 2006-03-03 | 2013-10-01 | Ganser-Hydromag Ag | Fuel injection valve for internal combustion engines |
DE102010001612A1 (en) * | 2010-02-05 | 2011-08-11 | Robert Bosch GmbH, 70469 | fuel injector |
DE102011015753A1 (en) | 2011-03-31 | 2012-10-04 | Raphael Füchslin | Injector |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0199632A1 (en) * | 1985-04-19 | 1986-10-29 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Fuel injection system for diesel engines |
EP0426205A2 (en) * | 1985-12-02 | 1991-05-08 | Marco Alfredo Ganser | Device for the control of electro-hydraulically actuated fuel injectors |
EP0740067A2 (en) * | 1995-04-27 | 1996-10-30 | Isuzu Motors Limited | Accumulator-type fuel injection system |
-
1999
- 1999-07-05 DE DE59906995T patent/DE59906995D1/en not_active Expired - Lifetime
- 1999-07-05 EP EP99112980A patent/EP0976924B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0199632A1 (en) * | 1985-04-19 | 1986-10-29 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Fuel injection system for diesel engines |
EP0426205A2 (en) * | 1985-12-02 | 1991-05-08 | Marco Alfredo Ganser | Device for the control of electro-hydraulically actuated fuel injectors |
EP0740067A2 (en) * | 1995-04-27 | 1996-10-30 | Isuzu Motors Limited | Accumulator-type fuel injection system |
Also Published As
Publication number | Publication date |
---|---|
DE59906995D1 (en) | 2003-10-23 |
EP0976924A2 (en) | 2000-02-02 |
EP0976924B1 (en) | 2003-09-17 |
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