Source: http://www.google.fr/patents/US7673452
Timestamp: 2013-06-19 21:26:55
Document Index: 94793026

Matched Legal Cases: ['Application No. 10710', 'Application No. 115203', 'Application No. 134167', 'Application No. 142414', 'Application No. 10', 'application No. 06026496']

Brevet US7673452 - Motor-driven supercharger - Google�BrevetsRecherche Images Maps Play YouTube Actualit�s Gmail Drive Plus » Recherche avanc�e dans les brevets | Historique Web | Connexion Recherche avanc�e dans les brevets BrevetsA motor-driven supercharger of the invention is provided with a cooling fluid flow rate adjusting device (a flow rate adjuster (37) and a controller (40)) capable of adjusting a flow rate of a cooling fluid. On the basis of the flow rate adjuster (37) and the controller (40), a flow rate of a cooling...http://www.google.fr/patents/US7673452?utm_source=gb-gplus-shareBrevet US7673452 - Motor-driven supercharger Num�ro de publicationUS7673452 B2Type de publicationOctroi Num�ro de demande11/617,247 Date de publication9 mars 2010 Date de d�p�t28 d�c. 2006 Date de priorit�24 janv. 2006Autre r�f�rence de publicationCN101008344A, CN101008344B, DE602006020239D1, EP1811150A2, EP1811150A3, EP1811150B1, US20070169747 Num�ro de publication11617247, 617247, US 7673452 B2, US 7673452B2, US-B2-7673452, US7673452 B2, US7673452B2 InventeursMasahiro Shimizu Cessionnaire d'origineIshikawajima-Harima Heavy Industries Co., Ltd.Citations de brevets (100), Citations hors brevets (8), R�f�renc� par (1), Classifications (30) Liens externes: USPTO, Cession USPTO, EspacenetMotor-driven superchargerUS 7673452 B2 R�sum� A motor-driven supercharger of the invention is provided with a cooling fluid flow rate adjusting device (a flow rate adjuster (37) and a controller (40)) capable of adjusting a flow rate of a cooling fluid. On the basis of the flow rate adjuster (37) and the controller (40), a flow rate of a cooling fluid (41) is set to a first flow rate (a large flow rate) for cooling an electric motor (20) in a state where a temperature difference obtained by subtracting a temperature of the cooling fluid (41) from a temperature of the electric motor (20) is equal to or more than a predetermined temperature equal to or more than zero, and the flow rate of the cooling fluid (41) is set to a second flow rate (a small flow rate) which is smaller than the first flow rate and is for suppressing a heating effect to the electric motor (20) in a state where the temperature difference is lower than a predetermined temperature equal to or more than zero.
In order to improve a performance of an internal combustion engine, there has been widely used a supercharger (also called as �turbocharger�) driven by an exhaust gas of the internal combustion engine so as to compress an intake air and supercharge. Further, there has been used a supercharger in which an acceleration response or the like is improved by incorporating an electric motor on the same axis as a shaft of a supercharger, and accelerating and assisting a rotational drive of a compressor. The supercharger having a motor-driven assist function by the electric motor is called as a motor-driven supercharger.
SUMMARY OF THE INVENTION The present invention is made by taking the circumstances mentioned above into consideration, and an object of the present invention is to provide a motor-driven supercharger which can effectively suppress a temperature increase of an electric motor so as to elongate a continuous operation time by properly achieving a temperature increase suppressing effect of the electric motor by a cooling fluid, and does not cause an efficiency reduction of a compressor even in the case of cooling the electric motor doubling as a diffuser.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a skeleton structure of a conventional motor-driven supercharger;
DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be in detail given below of preferable embodiments in accordance with the present invention with reference to the accompanying drawings. In this case, the same reference numerals are attached to common parts in each of the drawings, and an overlapping description will be omitted.
First Embodiment A description will be given below of a first embodiment in accordance with the present invention.
In the present embodiment, a flow rate adjuster 37 is constituted by an opening and closing valve 38 and a fixed orifice 39 which are arranged in parallel on the cooling fluid supply line 32, and is structured such that a flow rate of the cooling fluid 41 comes to a first flow rate (hereafter this is called �a large flow rate�) in a state in which the opening and closing valve 38 is open, and the flow rate of the cooling fluid 41 comes to a second flow rate (hereafter this is called �a small flow rate�) in a state in which the opening and closing valve 38 is closed. In other words, the flow rate of the cooling fluid 41 supplied to the electric motor side cooling fluid flow path 34 is switched to the large flow rate and the small flow rate by opening and closing the opening and closing valve 38.
Second Embodiment A description will be given below of a second embodiment in accordance with the present invention.
Other Embodiments The embodiments mentioned above are applied to the motor-driven supercharger in which the bearing 19 of the shaft 12 is arranged in the turbine side, and the electric motor 20 is arranged in the compressor side, however, the applied range of the present invention is not limited to this, but the present invention can be of course applied to a motor-driven supercharger of a type that an electric motor is arranged in a center portion and bearings are arranged in both sides thereof, for example, disclosed in Japanese Unexamined Patent Publication No. 2003-293785.
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WoollenweberInternal combustion engine turbochargerWO1998002652A114 juil. 199722 janv. 1998Turbodyne Systems, Inc.Motor-assisted supercharging devices for internal combustion enginesWO1998030790A211 d�c. 199716 juil. 1998Turbodyne Systems, Inc.Cooling means for a motor-driven centrifugal air compressorWO2005024202A15 sept. 200317 mars 2005Honeywell International Inc.Electric power connection for electrically assisted turbochargerWO2005028876A122 sept. 200431 mars 2005Abb Research Ltd.Compressor cleaning systemWO2005113961A1 *18 mai 20051 d�c. 2005Toyota Jidosha Kabushiki KaishaMotor-assisted turbo charger for an internal combustion engine* Cit� par l'examinateurCitations hors brevetsR�f�rence1 *Co-pending U.S. Appl. No. 12/280,816, filed on Aug. 27, 2008 and U.S. Appl. No. 11/617,211, filed on Dec. 28, 2006.2 *Machine translation of JP 2000-130176 A.3Microfilm 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, 1984.4Microfilm 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, 1988.5Microfilm 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, 1986.6Microfilm 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, 1987.7Office Action issued in related Korean Patent Application No. 10-2007-0005555 (included herein in Korean and Japanese) dated Mar. 30, 2009.8Search Report issued in European corresponding application No. 06026496.7, dated Feb. 10, 2009 and mailed Feb. 19, 2009.* Cit� par l'examinateur R�f�renc� par Brevet citant Date de d�p�t Date de publication D�posant TitreUS8051661 *12 d�c. 20078 nov. 2011Toyota Jidosha Kabushiki KaishaSupercharging control system of an internal combustion engine* Cit� par l'examinateurClassifications Classification aux �tats-Unis60/608, 60/607, 310/55, 290/52, 310/54 Classification internationaleH02K9/00, H02K9/19, H02K7/18, H02K5/20, F02B37/10, H02K5/18, F02B37/04, F02B39/00, F02B37/00, F02B33/44 Classification coop�rativeF05B2260/232, F01D25/125, F02B39/005, F05B2270/303, F05B2260/221, F02B39/10, F05B2220/40, Y02T10/144, F02B37/10, F01D25/12 Classification europ�enneF01D25/12, F02B39/10, F02B37/10, F01D25/12B, F02B39/00CFaire pivoterImage d'origineAccueil Google - Plan du site - T�l�chargements par lot sur l'USPTO - R�gles de confidentialit� - Conditions d'utilisation - � propos de Google�Brevets - Envoyer des commentairesDonn�es fournies par IFI CLAIMS Patent Services©2012 Google