DE102004002086A1 - Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating - Google Patents
Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating Download PDFInfo
- Publication number
- DE102004002086A1 DE102004002086A1 DE200410002086 DE102004002086A DE102004002086A1 DE 102004002086 A1 DE102004002086 A1 DE 102004002086A1 DE 200410002086 DE200410002086 DE 200410002086 DE 102004002086 A DE102004002086 A DE 102004002086A DE 102004002086 A1 DE102004002086 A1 DE 102004002086A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel injection
- injection valve
- friction
- valve
- screw
- 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- Withdrawn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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9038—Coatings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die
Erfindung geht von einem Kraftstoffeinspritzventil für Brennkraftmaschinen
aus, wie es dem Oberbegriff des Anspruchs 1 entspricht. Aus der Schrift
Um eine ausreichende Abdichtung der hochdruckführenden Kanäle zu erreichen ist es wichtig, die beiden Körper mit einer entsprechend großen Kraft aufeinander zu pressen. Andererseits darf die Kraft auch nicht zu groß werden, um plastische Verformungen an den Körpern oder der Spannmutter zu verhindern. Außerdem werden die Körper bei einem übergroßen Anziehen der Spannmutter so stark verformt, so dass es zu Auswirkungen auf die in den Körpern befindlichen funktionalen Vorrichtungen, etwa einer Ventilnadel, kommen kann.Around To achieve adequate sealing of the high-pressure channels, it is important that both bodies with a correspondingly large force to press each other. On the other hand, the power must not too grow up, to plastic deformations on the bodies or the clamping nut to prevent. Furthermore become the body at an oversized dressing the clamping nut deformed so much, causing it to affect those in the bodies located functional devices, such as a valve needle, can come.
Zur Erreichung einer definierten Anzugskraft sind verschiedene Verfahren möglich: Aus der Gewindehöhe und dem Anzugswinkel der Spannmutter kann die Kraft berechnet werden, die die Spannmutter auf die Körper ausübt. Bei der Montage der Spannmutter führt der vorgegebene Anzugswinkels also zu der gewünschten Kraft. Eine andere Möglichkeit ist, die Spannmutter mit einem festen Drehmoment anzuziehen. Dadurch kann ebenfalls die gewünschte Anzugskraft eingestellt werden. Allen Verfahren ist jedoch gemein, dass die Anzugskraft um so exakter auf den Sollwert mit geringen Streuungen einstellbar ist, wenn die Reibung zwischen der Anlageschulter der Spannmutter und der Anlagefläche des Körpers gering und wohl definiert ist. Da dies bei den bekannten Kraftstoffeinspritzventilen nicht in ausreichendem Maße der Fall ist, kommt es bei der Montage zu großen Schwankungen in der Anzugskraft, was entweder zu unerwünschten Verformungen der Körper oder zu Undichtigkeiten der hochdruckführenden Kanäle führt.to Achieving a defined tightening force are different procedures possible: From the thread height and the tightening angle of the tightening nut, the force can be calculated, the clamping nut on the body exercises. During assembly of the clamping nut leads the specified tightening angle so to the desired Force. Another possibility is to tighten the nut with a fixed torque. Thereby can also be the desired one Tightening force can be adjusted. All methods are common, that the tightening force is the more accurate to the setpoint with low Scattering is adjustable when the friction between the abutment shoulder the clamping nut and the contact surface of the body low and well defined. As is the case with the known fuel injection valves not enough If this happens, there are large fluctuations in the tightening force during assembly. which is either too undesirable Deformations of the body or leads to leaks in the high-pressure channels.
Vorteile der ErfindungAdvantages of invention
Das erfindungsgemäße Kraftstoffeinspritzventil mit den kennzeichnenden Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass die beiden Körper des Gehäuses mit einer genau definierten Anzugskraft aneinander gepresst werden können. Hierzu weist entweder die Anlageschulter der Spannmutter und/oder die Anlagefläche des Körpers eine reibungsmindernde Beschichtung auf. Durch die Minderung der Reibung kann durch einen entsprechenden Anzugswinkel oder durch ein Anzugsmoment der Spannmutter die Anzugskraft mit geringer Streuung auf den gewünschten Wert eingestellt werden.The Fuel injection valve according to the invention with the characterizing features of claim 1, in contrast, the Advantage on that the two bodies of the housing can be pressed together with a well-defined tightening force. For this has either the contact shoulder of the clamping nut and / or the contact surface of the body a friction-reducing coating on. By reducing the Friction can be through a corresponding tightening angle or through a tightening torque of the clamping nut the tightening force with little scatter to the desired Value to be set.
Besonders vorteilhaft haben sich Beschichtungen erwiesen, die auf Kohlenstoffbasis hergestellt sind. Insbesondere Kohlenstoffschichten, bei denen die Kohlenstoffatome diamantartig verbunden sind, gewährleisten eine reibungsarmes Gleiten der Flächen aufeinander.Especially Advantageous coatings have proven to be based on carbon are made. In particular, carbon layers in which the Carbon atoms are diamond-like, ensure a low-friction sliding of the surfaces on each other.
Zeichnungdrawing
In der einzigen Figur der Zeichnung ist ein erfindungsgemäßes Kraftstoffeinspritzventil im Längsschnitt dargestellt.In the single figure of the drawing is an inventive fuel injection valve in longitudinal section shown.
Beschreibung des Ausführungsbeispielsdescription of the embodiment
In
der
Zwischen
der Wand der Bohrung
Der
Ventilkörper
Für eine gute
Abdichtung des Zulaufkanals
Die
Anzugskraft steht in direkter Beziehung mit dem Anzugsmoment, mit
dem die Spannmutter
Neben
dem Ausführungsbeispiel
wie in der Zeichnung dargestellt, bei dem der Ventilkörper
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410002086 DE102004002086A1 (en) | 2004-01-15 | 2004-01-15 | Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410002086 DE102004002086A1 (en) | 2004-01-15 | 2004-01-15 | Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004002086A1 true DE102004002086A1 (en) | 2005-08-04 |
Family
ID=34716563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410002086 Withdrawn DE102004002086A1 (en) | 2004-01-15 | 2004-01-15 | Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004002086A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008000559B4 (en) * | 2007-03-23 | 2017-06-22 | Denso Corporation | Fuel injection valve |
CN109838327A (en) * | 2017-11-27 | 2019-06-04 | 现代自动车株式会社 | Fuel injection system and the method for operating fuel injection system |
-
2004
- 2004-01-15 DE DE200410002086 patent/DE102004002086A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008000559B4 (en) * | 2007-03-23 | 2017-06-22 | Denso Corporation | Fuel injection valve |
CN109838327A (en) * | 2017-11-27 | 2019-06-04 | 现代自动车株式会社 | Fuel injection system and the method for operating fuel injection system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140801 |