CN101517210A - Element which generates a magnetic field - Google Patents
Element which generates a magnetic field Download PDFInfo
- Publication number
- CN101517210A CN101517210A CNA2007800359366A CN200780035936A CN101517210A CN 101517210 A CN101517210 A CN 101517210A CN A2007800359366 A CNA2007800359366 A CN A2007800359366A CN 200780035936 A CN200780035936 A CN 200780035936A CN 101517210 A CN101517210 A CN 101517210A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- lining
- parts
- matrix
- compressor impeller
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/06—Arrangement of sensing elements responsive to speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Abstract
The invention relates to an element which generates a magnetic field for fastening a compressor wheel to a turboshaft of an exhaust-gas turbocharger, having a basic body and a thread. In order to specify an element which generates a magnetic field for fastening a compressor wheel to a turboshaft, which element generates as high a magnetic field strength as possible and nevertheless can absorb without damage the forces and the tightening torques which occur during fastening of the compressor wheel to the turboshaft, the entire basic body comprises a magnetic material and a sleeve is arranged in the basic body, which sleeve comprises a non-magnetic material and has the thread which can be screwed to a mating thread of the turboshaft.
Description
Technical field
The present invention relates to a kind of parts that produce magnetic field, be used for compressor impeller is fixed on the turbine shaft of exhaust-gas turbocharger, these parts have matrix and screw thread.
Background technique
The power that internal-combustion engine produced depends on air quantity and the amount of fuel that flows to internal-combustion engine.In order to improve power, need to increase the amount of the combustion air and the fuel oil that flow to internal-combustion engine.In the internal-combustion engine B type engine, the raising of power is by enlarging displacement or realizing by improving rotating speed.But, enlarge displacement and caused the remarkable increase of size in principle and therefore caused internal-combustion engine expensive more.And the raising of rotating speed has particularly brought tangible problem and shortcoming under the situation of bigger internal-combustion engine.
The technological means that being used to of often using improved power of IC engine is supercharging.Therefore by exhaust-gas turbocharger or also by means of the precompression of implementing by the gas compressor of engine mechanical ground driving combustion air.Exhaust-gas turbocharger consists essentially of gas compressor and turbo machine, and they link to each other with a common axle and rotate with same rotational speed.The turbo machine waste gas of useless detonation usually can be converted into energy of rotation and drive pressure mechanism of qi.This gas compressor that is also referred to as compressor suck fresh air and precompressed air be delivered to the cylinder of motor.The amount of fuel that increases can be flowed to the bigger air quantity in cylinder, explosive motor is exported more power thus.Thus, combustion process has been subjected to favourable influence, thereby makes explosive motor obtain better total efficiency.In addition, can form the torque curve that utilizes turbocharger supercharged internal-combustion engine highly beneficially.
Under the situation that exhausted air quantity increases, can exceed the maximum permissible speed of the assemblying body of forming by turbine wheel, compressor impeller and turbine shaft, this assemblying body is also referred to as the rotor assembly of exhaust-gas turbocharger.Under the situation of the rotating speed that does not allow to exceed rotor assembly, may damage this rotor assembly, this just is equal to the damage fully of turbosupercharger.Just be the problem that new-type small sized turbine pressurized machine with obviously less turbine wheel diameter and compressor impeller diameter can suffer from the maximum speed that exceeds permission, this turbosupercharger is because obvious less rotary inertia has the rotation acceleration performance of having improved.According to the layout of turbosupercharger, exceed rotating speed and limit about 5% damage fully that will cause for turbosupercharger.
Utilize the point-device measurement of the parts realization in generation magnetic field to the rotating speed of turbosupercharger, these parts are arranged on the turbine shaft and with this turbine shaft and rotate, wherein, surveyed the caused magnetic field of parts in the generation magnetic field of rotation by sensor, this sensor produces the proportional electrical signal of rotating speed with turbine shaft.
Compressor impeller is fixed on magnetization nut on the turbine shaft by JP 10206447 A2 cicada a kind of being used for.Be provided with the clavate magnet in this nut, this clavate magnet is supported by matrix.In order in sensor, to produce the magnetic field that to measure well, the magnet of this rotation must as far as possible greatly and produce enough field intensity on the one hand, all on the other hand magnets are all made by very crisp material, so that this nut is not suitable for as being used for compressor impeller being fixed on parts on the turbine shaft very much, this is because crisp magnetic material can only absorb or can not absorb fully power and the Tightening moment that occurs when being fixed on compressor impeller on the turbine shaft conditionally.
Summary of the invention
Therefore the objective of the invention is to, a kind of parts that produce magnetic field are proposed, these parts are used for compressor impeller is fixed on the turbine shaft of exhaust-gas turbocharger, and these parts produce high as far as possible magnetic intensity and still can without damage absorb power and the Tightening moment that occurs when being fixed on compressor impeller on the turbine shaft.
According to the present invention, this purpose realizes by the feature of independent claims 1.
If whole substrate is made by magnetic material, and in matrix, be provided with lining, this lining is made by nonmagnetic substance and is had a screw thread, this screw thread can screw with the left-hand thread of turbine shaft, the parts that produce magnetic field so just can produce the magnetic field with high field intensity, and these parts also are suitable for without damage absorbing power and the Tightening moment that occurs when being fixed on compressor impeller on the turbine shaft.Therefore the parts according to generation of the present invention magnetic field have two kinds of performances concurrently, and these two kinds of performances do not provide in the parts according to the generation magnetic field of prior art.
In a design proposal, bushing design is for being pressed into lining.This is pressed into lining and can be apace be connected with matrix with seldom expense, and this provides cost savings and the production time.
In next design proposal, matrix has the interior gear teeth, lining by should in gear teeth and base shape ordinatedly (formschluessig) be connected.Make this lining grappling securely (verankert) thus in matrix.
In an improvement project, lining is made by nonmagnetic metal.The lining that is made of metal is well suited for and is pressed in the matrix, and can without damage absorb very big power and torque.Alternatively, lining can be made of plastics.New-type plastics also can without damage absorb very big power and torque, and even can consider to make lining with the method for injection moulding in matrix.
In next improvement project, lining utilizes at least one crimping (Krimpung) to be connected with matrix.Lining can easily and need not a lot of expenses ground and roll (krimpen) in edge, produces reliable with durable being connected between lining and the matrix equally with this.
In next design proposal, lining is made by austenitic steel.Austenitic steel intensity is big especially, so this lining can absorb very big power and the Tightening moment that occurs when being fixed on compressor impeller on the turbine shaft especially well.
Description of drawings
Embodiments of the invention exemplarily are shown in the accompanying drawings.Shown in the figure:
Fig. 1 shows the exhaust-gas turbocharger with turbo machine and compressor;
Fig. 2 shows the sectional view of compressor;
Fig. 3 shows the matrix of the parts that produce magnetic field;
Fig. 4 shows by matrix known among Fig. 3 with another perspective view;
Fig. 5 shows lining;
Fig. 6 shows the parts that produce magnetic field;
Fig. 7 shows the parts that produce magnetic field once more;
Fig. 8 shows the sectional view of the parts that produce magnetic field;
Fig. 9 shows the parts that are used for compressor impeller is fixed on the generation magnetic field on the turbine shaft, and wherein these parts are in the installment state in the exhaust-gas turbocharger.
Embodiment
Fig. 1 shows the exhaust-gas turbocharger 1 with turbo machine 2 and compressor 3.Compressor impeller 9 rotatably is placed in the compressor 3 and with turbine shaft 5 and is connected.Turbine shaft 5 is also rotatably settled, and is connected with turbine wheel 4 in its another end.The assemblying body of being made up of compressor impeller 9, turbine shaft 5 and turbine wheel 4 is also referred to as rotor assembly.Hot waste gas enters turbo machine 2 from the explosive motor that is not shown on this through turbine inlet 7, and wherein turbine wheel 4 is in rotation status.Exhaust flow leaves turbo machine 2 by turbo machine outlet 8.Turbine wheel 4 is connected with compressor impeller 9 by turbine shaft 5.So turbo machine 2 Driven Compressor 3.In compressor 3, air is inhaled into by air inlet 16, is compressed in compressor 3 subsequently, and is transported to explosive motor through air outlet slit 6.
Fig. 2 shows the sectional view of compressor 3.In compressor housing, can pick out compressor impeller 9.Compressor impeller 9 utilizes the parts 17 that produce magnetic field to be fixed on the turbine shaft 5.Therefore, the parts 17 in generation magnetic field are arranged in the air inlet 16 of compressor 3.The parts 17 that produce magnetic field can for example be designed to acorn nut, and this nut is screwed around on the screw thread of turbine shaft 5, thereby compressor impeller 9 is firmly fixed with respect to the axle collar and this turbine shaft of turbine shaft 5.The parts 17 that are used for compressor impeller 9 is fixed on the generation magnetic field on the turbine shaft 5 comprise permanent magnet 13, and this permanent magnet has constituted the matrix 11 that produces the parts 17 in magnetic field.When turbine shaft 5 rotations, this magnet 13 is with the spin axis rotation of this turbine shaft around turbine shaft 5.In addition, this magnet 13 has caused the magnetic intensity variation of magnetic field gradient in other words in sensor 15.The magnetic field this variation of field gradient has in other words produced machinable signal of electronics in sensor 15, the rotating speed of this signal and turbine shaft 5 is proportional.
Fig. 3 shows the matrix 11 of the parts 17 that produce magnetic field.The matrix 11 that produces the parts 17 in magnetic field is made by magnetic material fully, thus, sends the magnetic field with high magnetic field intensity from matrix 11.On matrix 11, can pick out the arctic N and the South Pole S of magnet 13.In addition, matrix 11 has for example hexagon 14, and instrument can act on this hexagon.The gear teeth 12 in matrix 11, can picking out.
Fig. 4 shows by matrix known among Fig. 3 11 with another perspective view.This matrix 11 is made by magnetic material once more fully, so it can produce high magnetic intensity.On matrix 11, can pick out the arctic N and the South Pole S of magnet 13.In addition, in Fig. 4, also can easily see the interior gear teeth 12 in matrix 11.
Fig. 5 illustrates lining 10, and this lining is made by nonmagnetic substance.Lining 10 can be for example by high strength austenite steel or be made of plastics.In addition, Fig. 5 shows crimping 20 on lining 10.
Fig. 6 shows the parts 17 that produce magnetic field.The parts 17 that produce magnetic field be included in the matrix 11 that has illustrated in Fig. 3 and 4 and be arranged in this matrix by the known lining 10 of Fig. 5.Lining 10 can be pressed in the matrix 11, has wherein formed being connected of form fit between the interior gear teeth 12 of lining 10 and matrix 11.Form fit between the interior gear teeth 12 and the lining 10 be connected and crimping 20 has caused lining 10 inseparable fixing in matrix 11.Can easily screw thread 18 be incorporated in the lining 10, this lining can for example be made by high-intensity austenitic steel, and this screw thread can screw with the left-hand thread 19 on turbine shaft 5.
Fig. 7 shows the parts 17 that produce magnetic field once more, wherein can easily pick out the crimping 20 on lining 10 here.Therefore matrix 11 and lining 10 have constituted smooth upper surface, and this surface can abut against compressor impeller 9 and tighten.
Fig. 8 shows the sectional view of the parts 17 that produce magnetic field.Can pick out matrix 11 once more, lining 10 has been pressed into this matrix.Matrix 11 is made by magnetic material, and magnet 13 has produced high magnetic intensity based on its big volume.In matrix 11, be provided with by the made lining 10 of high-intensity steel.Lining 10 is connected with the interior gear teeth 12 form fit ground of matrix 11, and is securely fixed in the matrix 11 by crimping 20 in addition.By this layout, the parts 17 that produce magnetic field have two kinds of fundamental characteristics.At first, produce the parts 17 in magnetic field because the large volume of magnet 13 has produced high magnetic intensity, and in addition, lining 10 has constituted the very firm parts of mechanicalness with screw thread 18 disposed thereon, and these parts can be applied to compressor impeller 9 is fixed on the turbine shaft 5 without a doubt.
Figure 9 illustrates the parts 17 that are used for compressor impeller 9 is fixed on the generation magnetic field on the turbine shaft 5, wherein these parts are in the installment state in the exhaust-gas turbocharger.At first can pick out compressor impeller 9, the parts 17 that this compressor impeller utilization produces magnetic field are fixed on the turbine shaft.The parts 17 that produce magnetic field comprise matrix 11 and mechanically or/and be fixed on lining 10 in this matrix by bonding mode.What this will point out be: this lining not only can be made by high-intensity steel, and can for example be made of plastics.
Can pick out screw thread 18 in lining, this screw thread and the left-hand thread 19 on turbine shaft 5 screw.Here matrix 11 also has for example hexagon 14, and nut spanner can act on this hexagon.Torque that is produced and power are delivered on the lining 10 fully, and this lining is made by high-strength material.Therefore lining 10 has absorbed all mechanical power, and compressor impeller 9 is fixed on the turbine shaft 5 thus reliably.Utilizing crimping 20 to make lining 10 abut against compressor impeller 9 compresses.
In contrast, can produce field, sensor 15 also can be placed away from parts 17 ground that produce magnetic field relatively thus with high magnetic intensity as the magnet 13 of the large volume of the constituent element of the parts 17 that produce magnetic field.Magnet 13 for example can produce the magnetic field with such field intensity, and the outer wall that promptly can pass compressor housing measures this field intensity.This has the following advantages: promptly sensor 15 can be installed in the outside of compressor housing, not need thus the structure of compressor housing is transformed.
Claims (7)
1. parts (17) that produce magnetic field, be used for compressor impeller (9) is fixed on the turbine shaft (5) of exhaust-gas turbocharger (1), described parts have matrix (11) and screw thread (18), it is characterized in that, whole substrate (11) is made by magnetic material, and be provided with lining (10) in described matrix (11), described lining is made by nonmagnetic substance and is had described screw thread (18), and described screw thread can screw with the left-hand thread (19) of described turbine shaft (5).
2. the parts (17) that are used for fixing the generation magnetic field of compressor impeller (9) according to claim 1 is characterized in that described lining (10) is designed to be pressed into lining.
3. the parts (17) that are used for fixing the generation magnetic field of compressor impeller (9) according to claim 1 and 2, it is characterized in that, described matrix has the interior gear teeth (12), and described lining (10) is connected with described matrix (11) form fit ground by the gear teeth in described.
4. according to claim 1, the 2 or 3 described parts (17) that are used for fixing the generation magnetic field of compressor impeller (9), it is characterized in that described lining (10) is made by nonmagnetic metal.
5. according to claim 1, the 2 or 3 described parts (17) that are used for fixing the generation magnetic field of compressor impeller (9), it is characterized in that described lining (10) is made of plastics.
6. according at least one the described parts (17) that are used for fixing the generation magnetic field of compressor impeller (9) in the aforementioned claim, it is characterized in that described lining (10) utilizes at least one crimping (20) to be connected with described matrix (11).
7. according at least one the described parts (17) that are used for fixing the generation magnetic field of compressor impeller (9) in claim 4 or 6, it is characterized in that described lining (10) is made by austenitic steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006045772A DE102006045772A1 (en) | 2006-09-26 | 2006-09-26 | Magnetic field generating element |
| DE102006045772.2 | 2006-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101517210A true CN101517210A (en) | 2009-08-26 |
Family
ID=38926116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800359366A Pending CN101517210A (en) | 2006-09-26 | 2007-09-24 | Element which generates a magnetic field |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090290988A1 (en) |
| EP (1) | EP2089617A1 (en) |
| KR (1) | KR20090069180A (en) |
| CN (1) | CN101517210A (en) |
| DE (1) | DE102006045772A1 (en) |
| WO (1) | WO2008037689A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713149A (en) * | 2012-09-29 | 2014-04-09 | 博世电动工具（中国）有限公司 | Speed measuring device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007027235B4 (en) * | 2007-06-13 | 2010-08-19 | Continental Automotive Gmbh | Magnetized nut for mounting a compressor wheel of an exhaust gas turbocharger on the turbo shaft and method for producing such |
| DE102007041901A1 (en) * | 2007-09-04 | 2009-03-05 | Continental Automotive Gmbh | Magnetfed generating element |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2936890A (en) * | 1957-05-16 | 1960-05-17 | Dietrich W Botstiber | Magnetic chip detector |
| DE3834994A1 (en) * | 1988-10-14 | 1990-04-19 | Mtu Friedrichshafen Gmbh | Device for detecting the rotational speed of a shaft |
| JPH10206447A (en) * | 1997-01-24 | 1998-08-07 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic detected body of rotary detecting mechanism |
| DE19724880A1 (en) * | 1997-02-08 | 1998-08-13 | Fraunhofer Ges Forschung | Producing a thread insert in a component, for high-duty threaded joints |
| JP4407288B2 (en) * | 2004-01-15 | 2010-02-03 | 株式会社デンソー | Supercharger position detection device |
| DE102005010921A1 (en) * | 2004-07-15 | 2006-02-09 | Siemens Ag | turbocharger |
| DE102004052695A1 (en) * | 2004-10-29 | 2007-05-10 | Siemens Ag | turbocharger |
-
2006
- 2006-09-26 DE DE102006045772A patent/DE102006045772A1/en not_active Ceased
-
2007
- 2007-09-24 US US12/443,136 patent/US20090290988A1/en not_active Abandoned
- 2007-09-24 EP EP07820506A patent/EP2089617A1/en not_active Withdrawn
- 2007-09-24 WO PCT/EP2007/060099 patent/WO2008037689A1/en active Search and Examination
- 2007-09-24 CN CNA2007800359366A patent/CN101517210A/en active Pending
- 2007-09-24 KR KR1020097008285A patent/KR20090069180A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713149A (en) * | 2012-09-29 | 2014-04-09 | 博世电动工具（中国）有限公司 | Speed measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2089617A1 (en) | 2009-08-19 |
| WO2008037689A1 (en) | 2008-04-03 |
| KR20090069180A (en) | 2009-06-29 |
| US20090290988A1 (en) | 2009-11-26 |
| DE102006045772A1 (en) | 2008-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090826 |