EP2435675A1 - Gebaute nabe für einen druckwellenlader - Google Patents
Gebaute nabe für einen druckwellenladerInfo
- Publication number
- EP2435675A1 EP2435675A1 EP10722921A EP10722921A EP2435675A1 EP 2435675 A1 EP2435675 A1 EP 2435675A1 EP 10722921 A EP10722921 A EP 10722921A EP 10722921 A EP10722921 A EP 10722921A EP 2435675 A1 EP2435675 A1 EP 2435675A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer body
- gas
- pressure wave
- hub outer
- dynamic 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.)
- Granted
Links
Classifications
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/32—Engines with pumps other than of reciprocating-piston type
- F02B33/42—Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F13/00—Pressure exchangers
Definitions
- the invention relates to a gas-dynamic pressure wave machine for charging an internal combustion engine, having a cell rotor rotatably mounted in a housing on a shaft, which is arranged between a feed line for charge air and an exhaust gas line for combustion gases, according to the preamble of claim 1.
- Charging systems that generate gas-dynamic processes in closed gas channels and use them for charging are generally referred to as pressure wave superchargers or pressure wave machines.
- the cell rotors are cylindrical and usually have axially straight, cross-section constant running channels extending from the hot gas to the cold gas side.
- a built-up of sheet metal cell rotor with non-cylindrical outer contour shows the DE 10 2007 021 367 A1.
- the supporting inner system of the cell rotor as a shaft-hub connection can be made by machining. It is a wave with corresponding storage means on which appropriate sealing means are provided.
- the shaft carries a frusto-conical hub, to which a cell structure of the cell rotor is attached.
- the GB 920, 624 also shows a cell rotor made of sheet metal comprising an inner and an outer cylinder and partitions which extend between the two cylinders and which in the form of a Z, a Us or an Is contact each other. Both the inner and outer cylinders are made by rolling a sheet into a cylinder of appropriate size and then welding it longitudinally. The actual shaft-hub connection about which the cell rotor rotates is not shown.
- the problem with today's systems is the thermal load collective, which is subject to the entire component geometry of the cell rotor. Temperatures of up to 1,100 ° C can be found on the hot gas side of the cell rotor and temperatures of up to 200 ° C on the cold gas side. A thermally induced component distortion and the resulting suboptimal efficiency are the result. Problems occur in particular in the gap dimensional accuracy between the gas-conducting elements. Usually, therefore, the cell rotors used in pressure wave machines in series production for automobiles have been manufactured from cast material. However, as a cast blast machine is relatively expensive and heavy, the efforts are increasingly towards a sheet metal rotor.
- the shaft-hub connection including a hub outer body receiving the connection, has remained as a casting due to component complexity.
- anisotropic thermal stress it is problematic to choose different materials for the cell structure of the rotor and the hub.
- a gas-dynamic pressure wave machine for charging an internal combustion engine with a rotatably mounted in a housing on a shaft cell rotor, which is arranged between a feed air and an exhaust pipe for combustion gases, the shaft in a tube made of sheet metal Hub outer body is received and the bore for the shaft receiving in J of a hub fixed in the hub body formed disk or in that in the hub outer body, a smaller diameter pipe is attached as the tube of the hub outer body which receives the shaft.
- the hub outer body may consist of a higher quality sheet material corresponding to the cell rotor. The interior of the hub outer body then allows a new degree of freedom in terms of material selection.
- the disc may be a manufactured by casting or forging component, in which a bore for the shaft receiving is introduced.
- the disc may also be a relatively simple stamped part.
- the disc is provided with recesses in the manner of a rim star.
- the rim star the component size and thus also the corresponding weight are limited to a minimum even with a cast disk.
- a shaft is picked up and fastened.
- the rim star or the disc are joined with an inner wall of the hub outer body, for example, welded or soldered.
- the entire hub is built from sheet metal parts.
- an inner tube smaller diameter than the hub outer body is used to receive the shaft.
- This inner tube of smaller diameter is then radially held by means of a separate sheet metal part in the hub outer body.
- the shaft receiving inner tube extends only over a partial length of the outer hub body. It is sufficiently thick-walled to withstand the stresses.
- the holder of the tube then takes place again about one or more items.
- These are preferably sheet metal parts.
- the sheet metal part may be mounted in the hub outer body radially or at an angle to the cross-sectional plane of the hub outer body.
- the sheet metal part may be convex or concave curved to compensate for stresses, manufacturing tolerances and / or heat distortion.
- a plurality of sheet metal parts between inner tube and hub outer body are preferably provided, which are spaced apart.
- the inner wall of the hub outer body can be machined in the contour to ensure a snug fit of individual parts or to compensate for tolerances.
- one or more heat shields are provided in the hub outer body at a distance from the shaft holder, which protect the sensitive bearings of the shaft against the exhaust gas temperatures of up to 950 ° C.
- Figure 1 shows a section through a hub according to the invention
- FIG. 2 shows a section through a further embodiment of a hub according to the invention.
- FIG. 3 shows a longitudinal section through a pressure wave loader in the region of
- FIG. 1 shows a hub 1 according to the invention without a shaft in longitudinal section.
- the hub 1 has a cylindrical hub outer body 2, in which an inner tube 3 via convexly arranged sheet metal parts 4a, 4b is supported.
- the sheet metal parts 4a, 4b in this case enclose a substantially biconvex shape between them.
- the sheet metal parts 4a, 4b consequently do not run parallel to a cross-sectional plane AA. So that the air trapped between the sheet metal parts 4a, 4b can expand under thermal load, a recess (not shown in greater detail) for gas exchange is provided in the sheet metal parts 4a, 4b.
- Figure 2 shows a similar structure, but here is the inner tube 3 via a biconcave shape between them enclosing sheet metal parts 5a, 5b set in the hub outer body 2.
- the sheet metal parts 5a, 5b are thus formed concave to each other.
- the hub outer body 2 consists of a drawn or welded sheet metal tube, the same applies to the inner tube 3.
- the inner tube 3 serves to receive the shaft, not shown. In a region 20, 21, the possible contours of a processing of the inner wall of the hub outer body 2 are shown.
- hub outer body 2, inner tube 3 and sheet metal parts 4a, 4b, 5a, 5b can have different materials.
- the hub 1 is overall easier and more flexible to produce. •
- FIG. 3 shows a pressure wave machine 6 in longitudinal section.
- the pressure wave machine 6 has a cell rotor 7, which consists of two rows 7a, 7b of cells which are separated from each other by a plate 7c.
- the rows 7a, 7b of the cell rotor 7 are arranged around a cylindrical hub outer body 71 around.
- the cell rotor 7 is connected to the hub outer body 71 and rotatably supported via the connection thereof to a shaft 13.
- the cell rotor 7 is surrounded by a fixed double-walled housing 8, which is connectable via a housing connection 9 with a hot gas side B, not shown.
- the shaft 13 is rotatably supported by ball bearings 14. At its end facing away from the cell rotor 7, the shaft 13 is attached to a drive motor, not shown.
- the ball bearings 14 are protected by cover and seals 15a, 15b against contamination.
- the hub outer body 71 as the inner tube of the cell rotor 7 consists of a seamlessly drawn or welded tube.
- the inner wall of the hub outer body 71 has a machined contour 72, to provide a snug fit for three consecutive heat shields 16, which are connected by a screw 17 with each other.
- the heat shields 16 separate the hot gas side B from the cold gas side C inside the hub outer body 71.
- the first of the heat shields 16, which faces the hot gas side B has a gas-tight construction.
- a machined contour 73 is provided in the hub outer body 71, in which the cast housing 12 is inserted with sufficient clearance for unimpeded rotation of the cell rotor 7.
- the shaft 13 is inserted into a disc 18 in the form of a cast rim star and screwed by a screw 19 with the disc 18.
- the disc 18 is integrally connected to the hub outer body 71.
- the materials of the disc 18 and the hub outer body 71 may differ from each other.
- the individual structure of the inventive shaft-hub connection is more complex than a one-piece molding of a hub.
- the single structure pays off but for larger quantities on the amount and is lighter overall.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009023217.6A DE102009023217B4 (de) | 2009-05-29 | 2009-05-29 | Gebaute Nabe für einen Druckwellenlader |
PCT/DE2010/000465 WO2010136005A1 (de) | 2009-05-29 | 2010-04-24 | Gebaute nabe für einen druckwellenlader |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2435675A1 true EP2435675A1 (de) | 2012-04-04 |
EP2435675B1 EP2435675B1 (de) | 2013-07-17 |
Family
ID=42395002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10722921.3A Not-in-force EP2435675B1 (de) | 2009-05-29 | 2010-04-24 | Gebaute nabe für einen druckwellenlader |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120114469A1 (de) |
EP (1) | EP2435675B1 (de) |
JP (1) | JP5414892B2 (de) |
DE (1) | DE102009023217B4 (de) |
WO (1) | WO2010136005A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011056163B3 (de) * | 2011-09-29 | 2012-12-27 | Benteler Automobiltechnik Gmbh | Druckwellenlader mit gebautem Gehäuse |
DE102011054055B3 (de) * | 2011-09-29 | 2012-09-27 | Benteler Automobiltechnik Gmbh | Druckwellenlader mit Hybridgehäuse |
DE102012101922B4 (de) * | 2012-03-07 | 2015-05-07 | Benteler Automobiltechnik Gmbh | Druckwellenlader mit Schiebesitz |
HUE034654T2 (en) * | 2012-06-07 | 2018-02-28 | Mec Lasertec Ag | Cellular wheel, mainly for pressure waves |
US10844742B2 (en) | 2016-04-18 | 2020-11-24 | Borgwarner Inc. | Heat shield |
US10316802B2 (en) | 2017-03-28 | 2019-06-11 | Hyundai Motor Company | Exhaust gas recirculation device for vehicle |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB843911A (en) * | 1955-06-30 | 1960-08-10 | Ronald Denzil Pearson | Improvements in pressure exchangers |
GB920624A (en) | 1961-02-21 | 1963-03-13 | Power Jets Res & Dev Ltd | Improvements in or relating to pressure exchanger cell rings |
US3101168A (en) * | 1961-06-15 | 1963-08-20 | Ite Circuit Breaker Ltd | Aerodynamic wave machine formed rotor blades to minimize thermal stress |
CH405827A (de) * | 1963-07-10 | 1966-01-15 | Bbc Brown Boveri & Cie | Zellenrad für Druckwellenmaschinen |
CH406739A (de) * | 1963-08-14 | 1966-01-31 | Bbc Brown Boveri & Cie | Druckwellenmaschine |
GB1077942A (en) * | 1965-05-11 | 1967-08-02 | Power Jets Res & Dev Ltd | Improvements in or relating to rotors |
US4269570A (en) * | 1979-04-23 | 1981-05-26 | Ford Motor Company | Elastomeric mounting for wave compressor supercharger |
ATE13581T1 (de) * | 1980-11-04 | 1985-06-15 | Bbc Brown Boveri & Cie | Druckwellenmaschine zur aufladung von verbrennungsmotoren. |
ATE28232T1 (de) * | 1982-03-03 | 1987-07-15 | Bbc Brown Boveri & Cie | Druckwellenlader mit waelzlagerung des rotors. |
DE3830058C2 (de) * | 1987-10-02 | 1996-12-12 | Comprex Ag Baden | Druckwellenlader |
DE3922623A1 (de) * | 1989-07-10 | 1991-01-17 | Asea Brown Boveri | Druckwellenmaschine |
EP0472748A1 (de) * | 1990-08-25 | 1992-03-04 | Asea Brown Boveri Ag | Rotor einer Druckwellenmaschine |
AT408785B (de) * | 1995-11-30 | 2002-03-25 | Blank Otto Ing | Aufladeeinrichtung für die ladeluft einer verbrennungskraftmaschine |
DE102007021367B4 (de) | 2007-05-04 | 2008-12-24 | Benteler Automobiltechnik Gmbh | Gasdynamische Druckwellenmaschine |
DE102007037424B4 (de) * | 2007-08-08 | 2009-06-10 | Benteler Automobiltechnik Gmbh | Gasdynamische Druckwellenmaschine |
HUE034654T2 (en) * | 2012-06-07 | 2018-02-28 | Mec Lasertec Ag | Cellular wheel, mainly for pressure waves |
-
2009
- 2009-05-29 DE DE102009023217.6A patent/DE102009023217B4/de not_active Expired - Fee Related
-
2010
- 2010-04-24 US US13/375,068 patent/US20120114469A1/en not_active Abandoned
- 2010-04-24 WO PCT/DE2010/000465 patent/WO2010136005A1/de active Application Filing
- 2010-04-24 EP EP10722921.3A patent/EP2435675B1/de not_active Not-in-force
- 2010-04-24 JP JP2012512197A patent/JP5414892B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2010136005A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009023217A1 (de) | 2010-12-09 |
JP5414892B2 (ja) | 2014-02-12 |
EP2435675B1 (de) | 2013-07-17 |
WO2010136005A1 (de) | 2010-12-02 |
JP2012527578A (ja) | 2012-11-08 |
US20120114469A1 (en) | 2012-05-10 |
DE102009023217B4 (de) | 2014-08-28 |
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