Source: http://www.google.com/patents/US8001781?dq=6317900
Timestamp: 2017-01-19 09:37:49
Document Index: 150266420

Matched Legal Cases: ['Application No. 154517', 'Application No. 200780030544', 'Application No. 200780020456', 'Application No. 10710', 'Application No. 115203', 'Application No. 134167', 'Application No. 142414', 'Application No. 2006', 'Application No. 10']

Patent US8001781 - Motor-driven supercharger - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA motor-driven supercharger is provided with a thrust bearing (30) rotatably supporting a thrust force applied to a turbine shaft (12). The thrust bearing (30) is constituted by a small-diameter disc-shaped thrust collar (32) rotating together with a turbine shaft, and a turbine side thrust bearing (34)...http://www.google.com/patents/US8001781?utm_source=gb-gplus-sharePatent US8001781 - Motor-driven superchargerAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS8001781 B2Publication typeGrantApplication numberUS 12/300,746PCT numberPCT/JP2007/058947Publication dateAug 23, 2011Filing dateApr 25, 2007Priority dateJun 2, 2006Fee statusPaidAlso published asCN101460724A, CN101460724B, EP2025892A1, EP2025892A4, EP2025892B1, US20100218499, WO2007141969A1Publication number12300746, 300746, PCT/2007/58947, PCT/JP/2007/058947, PCT/JP/2007/58947, PCT/JP/7/058947, PCT/JP/7/58947, PCT/JP2007/058947, PCT/JP2007/58947, PCT/JP2007058947, PCT/JP200758947, PCT/JP7/058947, PCT/JP7/58947, PCT/JP7058947, PCT/JP758947, US 8001781 B2, US 8001781B2, US-B2-8001781, US8001781 B2, US8001781B2InventorsYasuyuki Shibui, Masahiro ShimizuOriginal AssigneeIhi CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (124), Non-Patent Citations (21), Referenced by (2), Classifications (24), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMotor-driven supercharger
US 8001781 B2Abstract
A motor-driven supercharger is provided with a thrust bearing (30) rotatably supporting a thrust force applied to a turbine shaft (12). The thrust bearing (30) is constituted by a small-diameter disc-shaped thrust collar (32) rotating together with a turbine shaft, and a turbine side thrust bearing (34) and a compressor side thrust bearing (36) which block a movement in an axial direction of the thrust collar. The compressor side thrust bearing (36) has a small-diameter ring portion (37) including a thrust surface which is in contact with the thrust collar and has approximately an equal diameter, and a flange portion (38 a) fixed to a housing (16) in the turbine side, and the small-diameter ring portion and the flange portion are arranged at different positions in an axial direction.
(C) a motor stator fixed within a housing;
(D) a motor rotor rotationally driven by the motor stator; and
(E) a thrust bearing rotatably supporting a thrust force applied to the turbine shaft,
wherein the thrust bearing comprises
i. a small-diameter disc-shaped thrust collar rotating together with the turbine shaft; and
ii. a turbine side thrust bearing and a compressor side thrust bearing that block movement of the thrust collar in an axial direction, wherein the compressor side thrust bearing is disposed on a side closer to the compressor impeller than the thrust collar in the axial direction, and
wherein the compressor side thrust bearing comprises
a. a small-diameter ring portion including a thrust surface that is in contact with the thrust collar on a turbine side and the thrust surface has approximately an equal diameter to that of the thrust collar;
b. a truncated conical portion that has a conical outer surface that gradually increases to the turbine side from an outer peripheral surface of the small-diameter ring portion;
c. a flange portion that is positioned at a turbine side end portion of the truncated conical portion and that is fixed to the housing closer to the turbine than the thrust collar; and
d. an oil supply flow path that opens on the thrust surface and supplies a lubricating oil to the thrust surface, and the small-diameter ring portion and the flange portion are located at different positions in the axial direction.
2. A motor-driven supercharger as claimed in claim 1, wherein a turbine side coil end of the motor stator is formed as a tapered surface of which an inner surface is expanded to the turbine side, and a seal plate is disposed between the compressor side thrust bearing and the motor stator so as compart two spaces, wherein the seal plate is formed in a truncated conical shape that is positioned on an inner side of the tapered surface.
3. A motor-driven supercharger as claimed in claim 2, wherein concave grooves facing each other and extending toward an oil discharge port are provided in an inner surface of the truncated conical portion of the compressor side thrust bearing and in an outer surface of the housing, wherein the concave grooves include a first concave groove formed in the inner surface of the truncated conical portion of the compressor side thrust bearing and a second concave groove formed in the outer surface of the housing so as to face the first concave groove, wherein the first concave groove and the second concave groove form an oil discharge path directed toward the oil discharge port.
4. A motor-driven supercharger as claimed in claim 2, further comprising:
(F) an oil thrower member positioned between the seal plate and the compressor side thrust bearing, wherein the oil thrower member is fixed to the turbine shaft so as to rotate together with the turbine shaft.
5. A motor-driven supercharger as claimed in claim 1, wherein the thrust collar is disposed within the truncated conical portion of the compressor side thrust bearing.
6. A motor-driven supercharger as claimed in claim 5, wherein the thrust collar is disposed on the turbine shaft and adjacent the small-diameter ring portion of the compressor side thrust bearing on the turbine side of the compressor side thrust bearing. Description
This is a National Phase Application in the United States of International Patent Application No. PCT/JP2007/058947 filed Apr. 25, 2007, which claims priority on Japanese Patent Application No. 154517/2006, filed Jun. 2, 2006. The entire disclosures of the above patent applications are hereby incorporated by reference.
On the other hand, in the exhaust gas turbine supercharger mentioned above, there has been already proposed a structure having an electric motor built-in for assisting an acceleration at a time of rotating at a low speed (for example, patent document 1). Hereinafter, the exhaust gas turbine supercharger having the electric motor mentioned above built-in is simply called as “motor-driven supercharger”.
The present invention is made for solving the problems mentioned above. In other words, an object of the present invention is to provide a motor-driven supercharger which can shorten an overhang amount of a shaft, can supply a sufficient amount of lubricating oil to a thrust surface suffered to a great thrust force in a compressor direction, and can smoothly discharge the lubricating oil from the thrust surface, even in the case that a thrust bearing is provided in an outer side of a radial bearing, and an electric motor is provided between the thrust bearing and a compressor impeller.
FIG. 1 is a view showing an example of a conventional exhaust gas turbine supercharger;
Further, in FIG. 3, the motor-driven supercharger 10 in accordance with the present invention is further provided with a motor rotor 22 and a motor stator 24. The motor rotor 22 corresponds to a rotor of an electric motor, and the motor stator 24 corresponds to a stator of the electric motor. A brushless a.c. motor is structured by the motor rotor 22 and the motor stator 24.
The seal plate 26 corresponds to a partition wall which is fixed to the bearing housing 16 and comparts between the compressor side thrust bearing 36 and the motor rotor 22, in this embodiment. In the present invention, the seal plate 26 is positioned in an inner side of a turbine side taper surface of the motor stator 24 mentioned above, and is formed in a truncated conical shape. In accordance with this structure, it is possible to overlap the compressor side thrust bearing 36, the seal plate 26 and the turbine side inner surface of the motor stator 24 which are respectively formed in the truncated conical shape, in a radial direction at an equal position in the axial direction.
In this case, it goes without saying that the present invention is not limited to the embodiments mentioned above, but can be variously modified within the scope of the present invention. Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3675056Jan 4, 1971Jul 4, 1972Gen ElectricHermetically sealed dynamoelectric machineUS3742123Nov 25, 1970Jun 26, 1973Haub LInsulator for electric wiresUS3778194Aug 28, 1972Dec 11, 1973Carrier CorpTurbocharger structureUS3927530May 28, 1974Dec 23, 1975Anton BraunSupercharged internal combustion engineUS3961867Mar 27, 1974Jun 8, 1976Holset Engineering Company LimitedRotatable assembly with rotor abraded by seal ringUS4198063Jul 14, 1978Apr 15, 1980Ishikawajima-Harima Jukogyo Kabushiki KaishaShaft sealing device for turbochargerUS4253031May 22, 1979Feb 24, 1981Robert Bosch GmbhDirectly driven dynamo electric machine-gas turbine generator structureUS4301375Jan 2, 1980Nov 17, 1981Sea Solar Power, Inc.Turbo-generator unit and systemUS4641977Mar 21, 1984Feb 10, 1987Woollenweber William EBearing systemUS4704075Jan 24, 1986Nov 3, 1987Johnston Andrew ETurbocharger water-cooled bearing housingUS4745755Jul 23, 1986May 24, 1988Isuzu Motors LimitedControl system for supercharged internal combustion engineUS4757686Aug 29, 1986Jul 19, 1988Isuzu Motors LimitedControl system for supercharger in internal combustion engineUS4833887Aug 28, 1986May 30, 1989Isuzu Motors LimitedAuxiliary apparatus for a turbocharged internal combustion engineUS5121605Mar 12, 1990Jun 16, 1992Hitachi, LtdTurbo-charger with rotary machineUS5323613Mar 30, 1993Jun 28, 1994Isuzu Motors LimitedMotor-generator voltage controller for turbochargerUS5587332Sep 1, 1992Dec 24, 1996Vlsi Technology, Inc.Method of making flash memory cellUS5605045Sep 18, 1995Feb 25, 1997Turbodyne Systems, Inc.Turbocharging system with integral assisting electric motor and cooling system thereforUS5798587Jan 22, 1997Aug 25, 1998Industrial Technology Research InstituteCooling loop structure of high speed spindleUS5834117Nov 12, 1996Nov 10, 1998Sumitomo Wiring Systems, Ltd.Heat-resistant electrical wire comprising a benzimidazole-based polymer coatingUS5857332 *Dec 20, 1996Jan 12, 1999Turbodyne Systems, Inc.Bearing systems for motor-assisted turbochargers for internal combustion enginesUS5870894Jul 16, 1996Feb 16, 1999Turbodyne Systems, Inc.Motor-assisted supercharging devices for internal combustion enginesUS5904471Dec 20, 1996May 18, 1999Turbodyne Systems, Inc.Cooling means for a motor-driven centrifugal air compressorUS5906098Oct 15, 1996May 25, 1999Turbodyne Systems, Inc.Motor-generator assisted turbocharging systems for use with internal combustion engines and control method thereforUS6032466 *May 14, 1997Mar 7, 2000Turbodyne Systems, Inc.Motor-assisted turbochargers for internal combustion enginesUS6102672Sep 10, 1997Aug 15, 2000Turbodyne Systems, Inc.Motor-driven centrifugal air compressor with internal cooling airflowUS6129524Dec 7, 1998Oct 10, 2000Turbodyne Systems, Inc.Motor-driven centrifugal air compressor with axial airflowUS6145314Sep 14, 1998Nov 14, 2000Turbodyne Systems, Inc.Compressor wheels and magnet assemblies for internal combustion engine supercharging devicesUS6160332Jul 8, 1999Dec 12, 2000Mitsubishi Denki Kabushiki KaishaLiquid cooled brushless generator for vehiclesUS6218747Sep 1, 1999Apr 17, 2001Mitsubishi Denki Kabushiki KaishaCar AC generatorUS6257834Sep 24, 1999Jul 10, 2001Asea Brown Boveri AgMethod and arrangement for the indirect cooling of the flow in radial gaps formed between rotors and stators of turbomachinesUS6278199Feb 23, 2000Aug 21, 2001International Rectifier Corp.Electronic single switch moduleUS6293769Feb 1, 2000Sep 25, 2001Pierburg AgCanned pump with dry rotor compartmentUS6416281Sep 24, 1999Jul 9, 2002Asea Brown Boveri AgMethod and arrangement for cooling the flow in radial gaps formed between rotors and stators of turbomachinesUS6449950 *Sep 12, 2000Sep 17, 2002Honeywell International Inc.Rotor and bearing system for electrically assisted turbochargerUS6609375Sep 14, 2001Aug 26, 2003Honeywell International Inc.Air cooling system for electric assisted turbochargerUS6647724Jul 30, 2002Nov 18, 2003Honeywell International Inc.Electric boost and/or generatorUS6668553Sep 13, 2002Dec 30, 2003Honeywell International Inc.Ejector-based cooling system for turbochargersUS6768332Mar 12, 2003Jul 27, 2004Advanced Semiconductor Engineering Inc.Semiconductor wafer and testing method for the sameUS6845617 *Dec 20, 2003Jan 25, 2005Honeywell International IncCenter housing design for electric assisted turbochargerUS6871499Dec 20, 2003Mar 29, 2005Honeywell Interntional, Inc.Oil pressure detector for electric assisted turbochargerUS6986648May 2, 2003Jan 17, 2006Dana Automotive LimitedElectric pumpUS7008194Sep 2, 2003Mar 7, 2006Borgwarner Inc.TurbochargerUS7010916Jun 4, 2004Mar 14, 2006Daimlechrysler AgExhaust-gas turbochargerUS7056103Mar 5, 2004Jun 6, 2006Honeywell International, Inc.Method and apparatus for cooling turbomachinery componentsUS7352077Aug 8, 2006Apr 1, 2008Ishikawajima-Harima Heavy Industries Co., Ltd.Motor-driven superchargerUS7360361Apr 7, 2006Apr 22, 2008Advanced Propulsion Technologies, Inc.TurbochargerUS7458214 *Apr 15, 2003Dec 2, 2008Honeywell International, Inc.Electric motor cartridge for an electrically assisted turbochargerUS20030051475Sep 14, 2001Mar 20, 2003John AllenAir cooling system for electric assisted turbochargerUS20030118461Jan 24, 2001Jun 26, 2003Josef HodappRadial turbo-blowerUS20050082941Oct 6, 2004Apr 21, 2005Toyota Jidosha Kabushiki KaishaTurbocharger with rotating electric machineUS20060081226Jun 11, 2003Apr 20, 2006Martin-Peter BolzElectrical charge air compressor provided with an integrated air cooling systemUS20060123783 *Apr 15, 2003Jun 15, 2006Noelle PhilippeElectric motor cartridge for an electrically assisted turbochargerUS20060225419Apr 7, 2006Oct 12, 2006Applied Technologies, Inc.TurbochargerUS20060245913Mar 27, 2006Nov 2, 2006Abb Research Ltd.Compressor cleaning systemUS20070036664Aug 10, 2006Feb 15, 2007Ishikawajima-Harima Heavy Industries Co., Ltd.Supercharger with electric motorUS20080087018 *Oct 11, 2006Apr 17, 2008Woollenweber William EBearing systems for high-speed rotating machineryUS20090025386 *Oct 12, 2004Jan 29, 2009Peer RumsbyElectrically assisted turbochargerUS20100175377 *Apr 2, 2009Jul 15, 2010Will HippenCooling an electrically controlled turbochargerUS20100266430 *May 26, 2008Oct 21, 2010Ihi CorporationTurbocharger with electric motorCA2068369A1May 11, 1992Nov 11, 1992Bernhard WuestElectrical machineCH266731A Title not availableCN2605696YMar 19, 2003Mar 3, 2004哈尔滨工业大学新型热能有限责任公司Liquid-flow thermal energy generator for enclosed water-cooled motorDE4115273C1May 10, 1991Jun 4, 1992J.M. Voith Gmbh, 7920 Heidenheim, DeTitle not availableDE10022113A1May 6, 2000Nov 15, 2001Daimler Chrysler AgMotor vehicle hybrid drive has controller that regulates charging pressure depending on operating conditions, limits charging pressure by regulating electrical power of electrical machineDE10156704A1Nov 13, 2001May 22, 2003Iav GmbhMethod and appliance for operating exhaust gas turbocharger for IC engines with electrically assisted drive based on comparison of actual operating conditions and family of operating characteristicsDE102005052363A1Nov 2, 2005May 3, 2007Siemens AgElectric motor for actuation of camshaft in motor vehicle, has cup-shaped outer cover arranged around sleeve that is washed with cooling medium, where cover has cooling medium inlet and cooling medium outletEP0079100A1Nov 1, 1982May 18, 1983Microturbo S.A.Turbo charger for a combustion engineEP0212988A2Aug 28, 1986Mar 4, 1987Isuzu Motors LimitedApparatus for controlling a turbocharger of an internal combustion engineEP0304259A1Aug 15, 1988Feb 22, 1989Isuzu Motors LimitedTurbochargerEP1348848A2Mar 25, 2003Oct 1, 2003Toyota Jidosha Kabushiki KaishaTurbochargerFR2859499A1 Title not availableGB2021874A Title not availableGB2162377A Title not availableJP3389748A Title not availableJP59134167U Title not availableJP61237830A Title not availableJP2000110577A Title not availableJP2000130176A Title not availableJP2000145468A Title not availableJP2000514987A Title not availableJP2001295655A Title not availableJP2001527613A Title not availableJP2003232340A Title not availableJP2003293785A Title not availableJP2004003420A Title not availableJP2004044451A Title not availableJP2004044452A Title not availableJP2004144094A Title not availableJP2005023920A Title not availableJP2005069178A Title not availableJP2005120927A Title not availableJP2005207337A Title not availableJP2005248799A Title not availableJP2007297973A * Title not availableJP2007321698A * Title not availableJP2007321699A * Title not availableJP2008031949A * Title not availableJP2009143365A * Title not availableJP2009243361A * Title not availableJP2010121589A * Title not availableJPH0299722A Title not availableJPH0642361A Title not availableJPH01171006A Title not availableJPH03138430A Title not availableJPH04119624A Title not availableJPH05026202A Title not availableJPH05199708A Title not availableJPH06288242A Title not availableJPH06346748A Title not availableJPH07102988A Title not availableJPH10299500A Title not availableJPH11182259A Title not availableJPS6149126A Title not availableJPS6419122A Title not availableJPS58124024A Title not availableJPS59134167U Title not availableJPS60153826A Title not availableJPS61237830A Title not availableKR1020040089337A Title not availableKR1020040105849A Title not availableWO2097/11263A1 Title not availableWO2005024202A1Sep 5, 2003Mar 17, 2005Honeywell International Inc.Electric power connection for electrically assisted turbochargerWO2005028876A1Sep 22, 2004Mar 31, 2005Abb Research Ltd.Compressor cleaning systemWO2005113961A1May 18, 2005Dec 1, 2005Toyota Jidosha Kabushiki KaishaMotor-assisted turbo charger for an internal combustion engine* Cited by examinerNon-Patent CitationsReference1Chinese Office Action issued in co-pending U.S. Appl. No. 12/377,987 Chinese Patent Application No. 200780030544.0. mailed Mar. 8, 2010.2First Office Action, issued in corresponding Chinese Patent Application No. 200780020456.2, issued Nov. 20, 2009.3http://answers.yahoo.com/question/index?qid=20100220052035A, dated Feb. 20, 2010, downloaded Mar. 9, 2011, 1 page.4http://encyclopedia2.thefreedictionary.com/friction+fit, downloaded Mar. 9, 2011, 2 pgs.5http://www.answers.com/topic/friction-fit, downloaded Mar. 9, 2011, 1 page.6http://www.roymech.co.uk/Useful-Tables/ISO-Tolerances/ISO, downloaded Mar. 9, 2011, 2 pgs.7http://www.roymech.co.uk/Useful—Tables/ISO—Tolerances/ISO, downloaded Mar. 9, 2011, 2 pgs.8International Search Report issued in corresponding application No. PCT/JP2007/058947, completed May 31, 2007 and mailed Jun. 12, 2007.9International Search Report issued in corresponding International Application No. PCT/JP2007/058947, completed May 31, 2007, mailed Jun. 12, 2007, labelled as Exhibit A, in its Japanese language.10International Search Report issued in corresponding International Application No. PCT/JP2007/058947, completed May 31, 2007, mailed Jun. 12, 2007, labelled as Exhibit B, in its English translation.11International Search Report issued in related application No. PCT/JP2007/058946, completed May 10, 2007 and mailed May 22, 2007.12Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 10710/1983 (Laid-open No. 116537/1984), Toyota Motor Corp, Aug. 6, 1984.13Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 115203/1986 (Laid-open No. 22301/1988), Nissan Motor Corp, Feb. 15, 1988.14Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 134167/1984 (Laid-open No. 49126/1986), dated Apr. 2, 1986.15Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 142414/1985 ( Laid-open No. 49629/1987), Nissan Motor Corp, Mar. 27, 1987.16Office Action issued in co-pending U.S. Appl. No. 11/617,211 mailed Feb. 22, 2010.17Office Action issued in co-pending U.S. Appl. No. 12/300,726, dated Dec. 21, 2010.18Office Action issued in corresponding Korean Patent Application No. Oct. 2008-7028778, dated Feb. 28, 2011 with its english translation.19Office Action issued in Japanese Patent Application No. 2006-207973, of co-pending U.S. Appl. No. 12/864,837, dated Jan. 11, 2011 with an english translation.20Office Action issued in related Korean Patent Application No. 10-2007-0005555 (included herein in Korean and Japanese) dated Mar. 30, 2009.21U.S. Office Action issued in co-pending U.S. Appl. No. 12/300,726, dated May 2, 2011.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS9328628 *Aug 18, 2011May 3, 2016Borgwarner Inc.Bearing housing of an exhaust-gas turbochargerUS20130183144 *Aug 18, 2011Jul 18, 2013Borgwarner Inc.Bearing housing of an exhaust-gas turbocharger* Cited by examinerClassifications U.S. Classification60/608, 60/607, 60/605.3, 417/407, 417/374International ClassificationF04B9/14, H02K3/44, F02B39/00, F02B33/44, F04B17/02, F02B37/10, H02K7/14Cooperative ClassificationF05D2220/76, F05D2220/40, F02C6/12, F01D25/168, F05D2240/52, F02B37/10, Y02T10/144, F02B39/10, F02B39/00European ClassificationF02B39/10, F02B37/10, F02B39/00Legal EventsDateCodeEventDescriptionNov 13, 2008ASAssignmentOwner name: IHI CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIBUI, YASUYUKI;SHIMIZU, MASAHIRO;REEL/FRAME:021830/0846Effective date: 20081020Feb 11, 2015FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services