DE10333691B3 - Fuel injection system with hydraulic circuit for internal combustion engine receives high-pressure fuel from common rail which passes to injection valve and spaces over pistons - Google Patents
Fuel injection system with hydraulic circuit for internal combustion engine receives high-pressure fuel from common rail which passes to injection valve and spaces over pistons Download PDFInfo
- Publication number
- DE10333691B3 DE10333691B3 DE2003133691 DE10333691A DE10333691B3 DE 10333691 B3 DE10333691 B3 DE 10333691B3 DE 2003133691 DE2003133691 DE 2003133691 DE 10333691 A DE10333691 A DE 10333691A DE 10333691 B3 DE10333691 B3 DE 10333691B3
- Authority
- DE
- Germany
- Prior art keywords
- valve
- piston
- actuator
- fuel
- pressure
- 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 - Fee Related
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
- F02M63/0033—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
- 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
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/704—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with actuator and actuated element moving in different directions, e.g. in opposite directions
-
- 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
-
- 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
Abstract
Description
Die Erfindung geht aus von einer Kraftstoffeinspritzvorrichtung nach der Gattung des einzigen Patentanspruchs. The invention is based on one Fuel injection device according to the preamble of the single claim.
Eine solche Vorrichtung ist beispielsweise durch
die
Die aus
Weiterhin ist aus der
Die erfindungsgemäße Kraftstofteinspritzvorrichtung für Brennkraftmaschinen mit den kennzeichnenden Merkmalen des einzigen Patentanspruchs hat dem gegenüber den Vorteil, dass auch das Kopplervolumen und das verbleibende Ende des antriebsseitigen Kolbens des Kopplers mit Hochdruck beaufschlagt wird und dadurch zumindest teilweise ein Kraftausgleich für das Steuerventil erreicht wird.The fuel injection device according to the invention for internal combustion engines with the characterizing features of the only claim opposite the advantage that the coupler volume and the remaining end of the drive-side piston of the coupler is subjected to high pressure is and thereby at least partially a force balance for the control valve is achieved.
Ein Ausführungsbeispiel der erfindungsgemäßen Kraftstoffeinspritzvorrichtung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigtAn embodiment of the fuel injection device according to the invention is shown in the drawing and is described in the description below explained in more detail. It shows
die einzige Figur die wesentlichen Komponenten einer erfindungsgemäßer Kraftstoffeinspritzvorrichtung mit einem Einspritzventil und einem Steuerventil sowie einem hydraulischen Koppler.the only figure the essential Components of a fuel injection device according to the invention with an injection valve and a control valve as well as a hydraulic one Coupler.
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Die erfindungsgemäße Kraftstofteinspritzvorrichtung
Zum Steuern des Öffnens und Schließens der
Einspritzöffnungen
dient ein Aktor
Wenn der mit dem Piezoaktor nicht
unmittelbar verbundene Kolben
Die Kolben
Das bewegliche Ventilstück
Das genannte Kugelventil kann eine freie Kugel ohne starre Verbindung mit einem anderen Teil aufweisen. Eine Kugel ist wegen der strömungsgünstigen Form für Kavitation wenig anfällig. Es mag stattdessen eine geeignete andere Konstruktion für das I-Ventil verwendet sein, z. B. ein Kegelventil mit einem kegelförmigen Flächenbereich, der mit dem Ventilsitz zusammen wirkt. Dabei kann das Ventilteil mit dem zugeordneten Kolben starr gekoppelt sein, so dass ein besonders schnelles Öffnen des Steuerventils möglich ist.The ball valve mentioned can have a free ball without a rigid connection to another part. A ball is because of the streamlined Shape for Cavitation less susceptible. Instead, there may be a suitable other design for the I-valve be used, e.g. B. a plug valve with a conical surface area, that works together with the valve seat. The valve part can be associated with the associated piston rigidly, so that a particular quick opening of the control valve possible is.
Der Aktor
Zwischen den zylindrischen Außenflächen der
Kolben und einem diese aufnehmenden Gehäuse (in der vereinfachten Darstellung
der Figur nicht gezeigt) bestehen Führungsspalte
Maßgeblich für die Funktion sind die den oben genannten Durchmessern (für kreisförmige Querschnitte) entsprechenden Flächen f1 bis f5. Kreisförmige Querschnitte sind zwar für die Herstellung zweckmäßig, die Erfindung ist jedoch hierauf nicht beschränkt.The above are decisive for the function mentioned diameters (for circular cross sections) corresponding areas f1 to f5. circular Cross sections are for the production expedient, the However, the invention is not limited to this.
Die dem Aktor
Der Aktor
Ein wichtiges Merkmal der Erfindung
besteht darin, dass an der Rückseite
(im Gegensatz zu der Seite am Übersetzerraum)
des mit dem Steuerventil direkt verbundenen Kolbens
Wegen des Raildrucks in der Füllkammer
Die Erfindung erfasst auch Ausführungsformen, bei denen der unter hohem Druck stehende Kraftstoff nicht von einem Hochdruckspeicher zugeführt wird, sondern von einer dem Einspritzventil zugeordneten Pumpe (z.B. Pumpe-Düse-Einheit, Unit Injector), die dann auch den Füllraum speist.The invention also covers embodiments where the high pressure fuel is not from one High pressure accumulator supplied but by a pump assigned to the injection valve (e.g. Unit injector), which then also the filling space fed.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003133691 DE10333691B3 (en) | 2003-07-24 | 2003-07-24 | Fuel injection system with hydraulic circuit for internal combustion engine receives high-pressure fuel from common rail which passes to injection valve and spaces over pistons |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003133691 DE10333691B3 (en) | 2003-07-24 | 2003-07-24 | Fuel injection system with hydraulic circuit for internal combustion engine receives high-pressure fuel from common rail which passes to injection valve and spaces over pistons |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10333691B3 true DE10333691B3 (en) | 2004-08-26 |
Family
ID=32748339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003133691 Expired - Fee Related DE10333691B3 (en) | 2003-07-24 | 2003-07-24 | Fuel injection system with hydraulic circuit for internal combustion engine receives high-pressure fuel from common rail which passes to injection valve and spaces over pistons |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10333691B3 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4579283A (en) * | 1983-06-16 | 1986-04-01 | Nippon Soken, Inc. | Pressure responsive fuel injector actuated by pump |
DE10118053A1 (en) * | 2001-04-11 | 2002-10-24 | Bosch Gmbh Robert | Valve for controlling liquids e.g. for vehicle fuel injection system, has hydraulic chamber that transfers control piston movement to actuating piston, which is in hydraulic force equilibrium with valve element closed |
-
2003
- 2003-07-24 DE DE2003133691 patent/DE10333691B3/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4579283A (en) * | 1983-06-16 | 1986-04-01 | Nippon Soken, Inc. | Pressure responsive fuel injector actuated by pump |
DE10118053A1 (en) * | 2001-04-11 | 2002-10-24 | Bosch Gmbh Robert | Valve for controlling liquids e.g. for vehicle fuel injection system, has hydraulic chamber that transfers control piston movement to actuating piston, which is in hydraulic force equilibrium with valve element closed |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |