DE102009001465A1 - Injection pump for supplying diesel to diesel engine of motor vehicle, has control chamber and control piston limited on side turned towards pump chamber, where pressure caused in control chamber supports spring effect - Google Patents
Injection pump for supplying diesel to diesel engine of motor vehicle, has control chamber and control piston limited on side turned towards pump chamber, where pressure caused in control chamber supports spring effect Download PDFInfo
- Publication number
- DE102009001465A1 DE102009001465A1 DE200910001465 DE102009001465A DE102009001465A1 DE 102009001465 A1 DE102009001465 A1 DE 102009001465A1 DE 200910001465 DE200910001465 DE 200910001465 DE 102009001465 A DE102009001465 A DE 102009001465A DE 102009001465 A1 DE102009001465 A1 DE 102009001465A1
- Authority
- DE
- Germany
- Prior art keywords
- control
- piston
- injection pump
- chamber
- control piston
- 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.)
- Withdrawn
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
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/361—Valves being actuated mechanically
-
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure
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- 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
Description
Technisches GebietTechnical area
Die Erfindung geht aus von einer Einspritzpumpe zur Versorgung einer Verbrennungskraftmaschine mit Treibstoff nach der Gattung des Anspruchs 1.The Invention is based on an injection pump for supplying a Internal combustion engine with fuel according to the preamble of the claim 1.
Stand der TechnikState of the art
Eine
solche Einspritzpumpe ist aus der
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Zumessventil gemäß Anspruch 1 hat den Vorteil eines vergleichsweise einfachen und robusten Aufbaus. Das Saugventil und das Zumessventil sind zu einer in sich geschlossenen Funktionseinheit verbunden mit nur noch einem relativ beweglichen Teil, das auf nur einer einzigen Feder abgestützt ist. Das Saugventil der Saugleitung wird dadurch bei ansteigendem Druck dauerhaft geschlossen und die Einspritzpumpe abgeschaltet. Bei abgeschalteter Einspritzpumpe werden keine Treibstoffmassen mehr in den angeschlossenen Saugleitungen willkürlich hin- und herverschoben. Pulsierende Druckschwingungen und insbesondere Resonanzbewegungen können in den Saugleitungen nicht mehr auftreten. Die erforderliche Antriebsleistung ist demgemäss vermindert und die Sicherheit der Funktion verbessert.The Metering valve according to the invention according to claim 1 has the advantage of a comparatively simple and robust construction. The suction valve and the metering valve are self-contained Function unit connected to only one relatively movable Part that is supported on a single spring. The suction valve of the suction line is characterized by increasing pressure permanently closed and the injection pump switched off. When switched off Injection pump are no more fuel mass in the connected suction lines arbitrarily shifted back and forth. Pulsating pressure oscillations and in particular resonance movements can not in the suction lines more occur. The required drive power is accordingly diminished and the safety of the function improved.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Einspritzpumpe angegeben.In the dependent claims are advantageous embodiments and further developments of the injection pump according to the invention specified.
Die Ausgestaltung nach Anspruch 2 hat den Vorteil, dass die Funktionselemente des Saugventils und der Zumesseinheit als in sich geschlossene Baueinheit montier- und gegebenenfalls austauschbar sind.The Embodiment according to claim 2 has the advantage that the functional elements the suction valve and the metering unit as a self-contained unit mounted and possibly interchangeable.
Die Ausgestaltung nach Anspruch 3 hat den Vorteil, dass sich der Ventilsitz des Saugventils aus einem besonders festen oder zähharten Spezialwerkstoff herstellen lässt, ohne für das Gehäuse in seiner Gesamtheit einen derart teuren und schwierig zu bearbeitenden Spezialwerkstoff verwenden zu müssen. Bei geringen Herstellkosten der Einspritzpumpe resultiert hieraus eine enorm verbesserte Dauerhaltbarkeit.The Embodiment according to claim 3 has the advantage that the valve seat of the suction valve made of a particularly solid or tough Special material can be produced, without for the Housing in its entirety such an expensive and difficult to to use special material to process. at low manufacturing costs of the injection pump results from this one enormously improved durability.
Die Ausgestaltung nach Anspruch 4 hat den Vorteil, dass sich der Ringkörper besonders einfach montieren und zuverlässig abgedichtet in das Gehäuse einfügen und gegebenenfalls leicht austauschen lässt. Die notwendige Dichtheit herzustellen ist bei den vorliegend realisierten Pumpendrücken von bis zu 2000 bar mit einem besonders hohen Anspruch versehen.The Embodiment according to claim 4 has the advantage that the annular body easy to assemble and reliably sealed insert into the housing and possibly lightly can be replaced. To make the necessary tightness is at the presently realized pump pressures from to to 2000 bar with a particularly high demand provided.
Die Ausgestaltung nach Anspruch 5 hat den Vorteil, noch mehr Bauelemente der Zumesseinheit und des Saugventils in sich zu vereinen und als funktionsfähigen Modul in einem Arbeitsschritt montieren und austauschen zu können. Die Ausgestaltung nach Anspruch 6 hat den Vorteil, das Druckregelventil und die Zumesseinheit platz- und gewichtsparend nebeneinander in dem Gehäuse bzw. in dem das Gehäuse bildenden Zylinderkopf einer Einspritzpumpe unterzubringen und unter Verzicht auf externe Leitungen funktionssicher zu verbinden sind. Es ist daher auch nicht mehr erforderlich, externe Leitungen herzustellen und gesondert zu montieren.The Embodiment according to claim 5 has the advantage of even more components the metering unit and the suction valve to unite in and as assemble the functional module in one work step and to be able to exchange. The embodiment according to claim 6 has the advantage of accommodating the pressure control valve and the metering unit and weight-saving side by side in the housing or in the housing forming cylinder head of an injection pump accommodate and waiving external lines reliable to connect. It is therefore no longer necessary to external Produce lines and install separately.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.One Embodiment of the invention is in the drawing shown and in the following description in more detail explained.
Die Zeichnung gibt eine Einspritzpumpe in längsgeschnittener Darstellung wieder.The Drawing gives an injection pump in longitudinally cut Representation again.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Die
in der Zeichnung wiedergegebene Einspritzpumpe ist zur Versorgung
einer Kolbenkraftmaschine mit Treibstoff bestimmt, insbesondere
eine Dieselmotors mit Dieseltreibstoff. Die Einspritzpumpe umfasst
ein Gehäuse
Das
Gehäuse
Das
Schließglied
Der
Steuerraum
Wird
von dem Drucksensor des Hochdruckspeichers hingegen angezeigt, dass
das untere Drucklimit erreicht ist, dann wird das Druckregelventil
Der
Bohrung
Die
Bohrung
Das
Schließglied
Der
Ringkörper
Der
Ringkörper
Der
Ringkörper
Die
Mündung der Gewindebohrung ist mit einer zylindrischen
Innenfläche versehen, in die eine Dichtkappe
Auch
die Verschlussschraube
Die
Verschlussschraube
Das
Druckregelventil
Die
Antriebswelle
Die
erfindungsgemäße Bauform lässt sich in gleicher
Weise bei Steckpumpen anwenden, bei denen die Kolben
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 19612412 B4 [0002] - DE 19612412 B4 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910001465 DE102009001465A1 (en) | 2009-03-11 | 2009-03-11 | Injection pump for supplying diesel to diesel engine of motor vehicle, has control chamber and control piston limited on side turned towards pump chamber, where pressure caused in control chamber supports spring effect |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910001465 DE102009001465A1 (en) | 2009-03-11 | 2009-03-11 | Injection pump for supplying diesel to diesel engine of motor vehicle, has control chamber and control piston limited on side turned towards pump chamber, where pressure caused in control chamber supports spring effect |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009001465A1 true DE102009001465A1 (en) | 2010-09-16 |
Family
ID=42557607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910001465 Withdrawn DE102009001465A1 (en) | 2009-03-11 | 2009-03-11 | Injection pump for supplying diesel to diesel engine of motor vehicle, has control chamber and control piston limited on side turned towards pump chamber, where pressure caused in control chamber supports spring effect |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009001465A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107850027A (en) * | 2015-08-10 | 2018-03-27 | 大陆汽车有限公司 | High-pressure fuel pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19612412B4 (en) | 1996-03-28 | 2006-07-06 | Siemens Ag | Control for a pressurized fluid supply system, in particular for the high pressure in a fuel injection system |
-
2009
- 2009-03-11 DE DE200910001465 patent/DE102009001465A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19612412B4 (en) | 1996-03-28 | 2006-07-06 | Siemens Ag | Control for a pressurized fluid supply system, in particular for the high pressure in a fuel injection system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107850027A (en) * | 2015-08-10 | 2018-03-27 | 大陆汽车有限公司 | High-pressure fuel pump |
CN107850027B (en) * | 2015-08-10 | 2020-09-15 | 大陆汽车有限公司 | High-pressure fuel pump |
US10900451B2 (en) | 2015-08-10 | 2021-01-26 | Vitesco Technologies GmbH | High-pressure fuel pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |