EP1771655A1 - Adjusting nut - Google Patents
Adjusting nutInfo
- Publication number
- EP1771655A1 EP1771655A1 EP05756825A EP05756825A EP1771655A1 EP 1771655 A1 EP1771655 A1 EP 1771655A1 EP 05756825 A EP05756825 A EP 05756825A EP 05756825 A EP05756825 A EP 05756825A EP 1771655 A1 EP1771655 A1 EP 1771655A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping nut
- cylindrical portion
- region
- injector
- wall thickness
- 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
- 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
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members
Definitions
- the invention relates to a clamping nut for an internal combustion engine injector having a first substantially cylindrical portion, at least a second cylindrical portion and a shoulder between the first portion and the second portion, the first portion having a smaller diameter than the second portion, and wherein the clamping nut is made by deep drawing.
- injector includes all types of devices for injecting fuel into the combustion chamber of an internal combustion engine, such as injectors, pump-nozzle units (PDEs) and pump-line nozzles. Units (PLDE), but for the sake of simplicity, only the term “injector” will be used hereafter.
- the invention has for its object to provide a respect.
- Their mechanical and thermal properties further improved clamping nut whose production costs are comparable low, as in a known from the prior art by deep drawing produced clamping nut.
- a clamping nut for an injector of an internal combustion engine having a first substantially cylindrical portion, with at least a second substantially cylindrical portion, with a shoulder between the first portion and the second portion, wherein the first portion has a smaller diameter than the second portion , and wherein the clamping nut is produced by deep drawing, achieved in that a wall thickness in the region of the first cylindrical portion is increased compared to a wall thickness in the region of the second cylindrical portion, and that the clamping nut in the region of the first cylindrical portion by deep drawing and upsetting produces becomes.
- the advantages of a workpiece produced by forming namely high production capacity can be maintained at the same time low production costs and at the same time the disadvantages of known from the prior art and produced by deep drawing clamping nuts are avoided.
- the shoulder between the first cylindrical section and the second cylindrical section is better supported by the first cylindrical section, or the introduction of force from the shoulder into the second cylindrical section is improved.
- Temperature reduction could be determined by comparative measurements on different samples. By reducing the maximum occurring at the nozzle body temperatures results in improved performance of the injectors and the nozzle needle wear increases sharply from. As a result, the reliability and the life of a equipped with a clamping nut according to the invention injector is significantly increased.
- the input mentioned task is also at a
- Clamping nut for an internal combustion engine injector having a first substantially cylindrical portion, at least a second substantially cylindrical portion, and a shoulder between the first portion and the second portion, the first portion having a smaller diameter than the second portion, that a wall thickness in the region of the first cylindrical portion is increased compared to a wall thickness in the region of the second cylindrical portion, and that the clamping nut is produced by extrusion.
- Clamping nut forms a contact surface for a nozzle body and / or a sealing surface for a nozzle body of the injector.
- the clamping nut can be screwed in a simple manner with a desired torque with the injector, in a further advantageous embodiment of
- Invention provided at least one projection and / or a recess for attaching a Einschraubtechnikmaschines on the clamping nut.
- the object underlying the invention is also achieved by a method for producing a clamping nut for an injector of an internal combustion engine, in which a blank is brought in several trains in the desired shape and then the wall thickness of the first cylindrical portion is increased by upsetting.
- the clamping nut is calibrated before upsetting the first cylindrical portion. This improves the dimensional accuracy of the clamping nut according to the invention.
- the clamping nut is punched before upsetting the first cylindrical portion in the region of the first cylindrical portion.
- Figure 1 shows a clamping device according to the invention provided in its entirety with the reference numeral 1 in longitudinal section.
- the clamping nut 1 consists with regard to the invention of a first cylindrical portion 3 and a second also substantially cylindrical portion. 5
- the second cylindrical portion 5 is designed stepped, but this is irrelevant to the invention. Therefore, for all embodiments of clamping nuts 1, the second cylindrical section 5 is stepped or partially even frusto-conical, claimed protection.
- an internal thread 9 is provided.
- the clamping nut 1 serves to screw a nozzle body, not shown, of an injector with a likewise not shown valve body of an injector.
- the valve body, not shown, of the injector has an external thread which cooperates with the internal thread 9 of the clamping nut 1.
- the nozzle body (not shown) has a cooperating with the paragraph 7 of the clamping nut 1 paragraph in its outer contour, so that by tightening the clamping nut 1 in the external thread of the valve body, not shown, the nozzle body can be clamped to the valve body.
- a plurality of depressions 11 are provided in the exemplary embodiment according to FIG. 1 over the circumference, into which a screw-in tool can be inserted.
- the clamping nut can be tightened with the required torque.
- the geometry of the clamping nut 1 is of course directed, above all, according to the dimensions of the nozzle body, not shown, and the valve body, not shown. Around these components, the clamping nut 1 is possible thin-walled, that means with as little material and space requirements, led.
- the clamping nut 1 In the region of the first cylindrical section 3, the clamping nut 1 has a wall thickness 13.
- the clamping nut 1 has a wall thickness 15 in the region of the second cylindrical section. It is of particular importance for the invention that the wall thickness 13 in the region of the first cylindrical portion relative to the wall thickness 15 of the second cylindrical portion 5 is significantly increased.
- the reduction of the maximum occurring temperatures in the nozzle body leads to a reduction of the wear of the nozzle needle, not shown, and their guidance in the nozzle body and an increase in the life of the injector.
- FIG. 2 shows an intermediate stage of the production of a clamping nut 1 according to the invention. How this intermediate stage is achieved, a person skilled in the art of forming know by his expertise, so that is omitted in connection with the description of the invention to these explanations.
- wall thickness 13 of the first cylindrical portion and the wall thickness 15 of the second cylindrical portion are substantially equal. This also applies to the processing stages, which are shown in Figures 3 and 4.
- the first cylindrical portion 3 is compressed, the outer diameter D 3 of the first cylindrical portion 3 in diameter remains almost constant, while the inner diameter D x of the first cylindrical portion 3 decreases. As a result, thereby the wall thickness 13 of the first cylindrical portion 3 with respect to the wall thickness 15 of the second cylindrical portion 15, which remains substantially unchanged, increased.
- the clamping nut 1 is further processed by removing a flange 19 and, for example, the internal thread 9 (see FIG. 1) is produced by threading or another method.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004035116A DE102004035116A1 (en) | 2004-07-20 | 2004-07-20 | locknut |
PCT/EP2005/053079 WO2006008225A1 (en) | 2004-07-20 | 2005-06-29 | Adjusting nut |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1771655A1 true EP1771655A1 (en) | 2007-04-11 |
EP1771655B1 EP1771655B1 (en) | 2011-08-10 |
Family
ID=34971117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05756825A Not-in-force EP1771655B1 (en) | 2004-07-20 | 2005-06-29 | Adjusting nut |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1771655B1 (en) |
KR (1) | KR101092689B1 (en) |
CN (1) | CN101018944A (en) |
AT (1) | ATE519940T1 (en) |
DE (1) | DE102004035116A1 (en) |
WO (1) | WO2006008225A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005062543A1 (en) * | 2005-12-27 | 2007-07-05 | Robert Bosch Gmbh | locknut |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19908154B4 (en) * | 1999-02-25 | 2006-11-09 | Schaeffler Kg | clamping element |
DE10017112B4 (en) * | 2000-04-06 | 2006-06-01 | Schaeffler Kg | locknut |
DE10017113B4 (en) * | 2000-04-06 | 2006-02-09 | Ina-Schaeffler Kg | locknut |
-
2004
- 2004-07-20 DE DE102004035116A patent/DE102004035116A1/en not_active Withdrawn
-
2005
- 2005-06-29 WO PCT/EP2005/053079 patent/WO2006008225A1/en active Application Filing
- 2005-06-29 CN CNA2005800245258A patent/CN101018944A/en active Pending
- 2005-06-29 AT AT05756825T patent/ATE519940T1/en active
- 2005-06-29 EP EP05756825A patent/EP1771655B1/en not_active Not-in-force
- 2005-06-29 KR KR1020077001326A patent/KR101092689B1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2006008225A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004035116A1 (en) | 2006-02-16 |
ATE519940T1 (en) | 2011-08-15 |
CN101018944A (en) | 2007-08-15 |
KR101092689B1 (en) | 2011-12-09 |
EP1771655B1 (en) | 2011-08-10 |
WO2006008225A1 (en) | 2006-01-26 |
KR20070033434A (en) | 2007-03-26 |
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