Patents by Inventor Yasuaki Nakano
Yasuaki Nakano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240133378Abstract: A scroll compressor includes a housing and a compression mechanism. The compression mechanism includes a compression chamber. The housing includes an intermediate pressure chamber into which refrigerant having an intermediate pressure is introduced from an external refrigerant circuit. The intermediate pressure is higher than a suction pressure of refrigerant drawn into the compression chamber and lower than a discharge pressure of the refrigerant discharged from the compression chamber. The intermediate pressure chamber and the compression chamber in a process of compression are connected to each other by an injection passage. The injection passage includes a muffler.Type: ApplicationFiled: February 25, 2022Publication date: April 25, 2024Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yoshihiro FUKAYA, Shinji TSUBAI, Yasuaki NAKANO
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Publication number: 20240094923Abstract: A controller assigns a first plurality of blocks among a plurality of blocks provided in a non-volatile memory to a first area, assigns a second plurality of blocks to a second area, and assigns a third plurality of blocks to a third area. The controller uses each block assigned to the first area in a first mode, uses each block assigned to the second area in a second mode in which the number of bits of data written in each memory cell is larger than that in the first mode, and uses each block assigned to the third area in the first mode or the second mode. The controller writes data received from a host device to an area that corresponds to a designation from the host device out of the first area and the third area. The controller transcribes valid data written to the first area and the third area to the second area.Type: ApplicationFiled: January 31, 2023Publication date: March 21, 2024Applicant: Kioxia CorporationInventors: Takashi WAKUTSU, Yasuaki NAKAZATO, Takeshi NAKANO
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Patent number: 11932104Abstract: A fuel tank (10) includes: a lower panel (12) made of steel and an upper panel (11) made of steel; and at least one pillar (100) made of steel which is disposed in an interior space (V) formed by the lower panel (12) and the upper panel (11) facing each other and of which a first end portion is fixed to the lower panel (12) and a second end portion is fixed to the upper panel (11) in a state where the second end portion is disposed in a hole formed in the upper panel (11).Type: GrantFiled: June 12, 2020Date of Patent: March 19, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Toshinori Mizuguchi, Masahiro Fuda, Akiyoshi Inoue, Junji Nakano, Yasuaki Naito
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Publication number: 20230287887Abstract: An electric compressor includes a compression part configured to compress fluid, an electric motor configured to drive the compression part, a housing accommodating the compression part and the electric motor, a soundproof cover covering the housing, and a nameplate attached to the housing and including a predetermined information. The housing includes a protrusion that is a part of the housing and protrudes out of the soundproof cover through a hole formed in the soundproof cover. The nameplate is provided on the protrusion.Type: ApplicationFiled: February 15, 2023Publication date: September 14, 2023Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Toshiharu AWA, Takayuki KATO, Toshiyuki MIYANO, Noritaka NISHIMORI, Toshiyuki KOBAYASHI, Yasuaki NAKANO
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Patent number: 9199197Abstract: A fuel addition valve that adds fuel into the exhaust gas passage of the engine in the form of fine fuel droplets, an upstream NOx adsorption-reduction catalyst, and a downstream NOx adsorption-reduction catalyst are arranged in this order. Platinum Pt and palladium Pd, as noble metal, are supported on the downstream NOx adsorption-reduction NOx catalyst such that the ratio of the mole number of the platinum Pt to the sum of the mole numbers of the platinum Pt and the palladium Pd is approx. 50% to approx. 80%. Only platinum Pt is supported on the upstream NOx adsorption-reduction catalyst. According to this structure, even when liquid fuel is supplied into exhaust gas, NOx can be effectively released from the NOx adsorption-reduction catalyst, and further the amount of NOx that the NOx adsorption-reduction catalyst can adsorb at a low temperature increases.Type: GrantFiled: September 6, 2007Date of Patent: December 1, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Yoshida, Yasuaki Nakano, Tadashi Watanabe, Kotaro Hayashi, Takamitsu Asanuma
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Patent number: 8151554Abstract: An object of the present invention is to perform removal of NOx in an exhaust gas purification system for an internal combustion engine equipped with an NOx catalyst while suppressing the consumption amount of reducing agent used for NOx removal even when the NOx catalyst is deteriorated. To achieve the object, when the degree of deterioration of the NOx catalyst is lower than or equal to a specific deterioration degree, the air-fuel ratio of the exhaust gas flowing into the NOx catalyst is adjusted to the stoichiometric air-fuel ratio or a rich air-fuel ratio. On the other hand, when it is determined that the degree of deterioration of the NOx catalyst is higher than the specific deterioration degree, the air-fuel ratio of the exhaust gas flowing into the NOx catalyst is adjusted to a specific lean air-fuel ratio.Type: GrantFiled: March 20, 2006Date of Patent: April 10, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yasuaki Nakano
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Patent number: 7685812Abstract: A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.Type: GrantFiled: October 4, 2004Date of Patent: March 30, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kohei Yoshida, Shinya Hirota, Takamitsu Asanuma, Yasuaki Nakano, Shunsuke Toshioka
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Publication number: 20090280037Abstract: There is provided a technique which can reduce the NOx stored in an NOx storage reduction catalyst. In case where concentrated reduction is carried out so as to add a reducing agent to the NOx storage reduction catalyst in a concentrated manner when a shift has been made from a state in which reduction of the NOx stored in said NOx storage reduction catalyst is unable to be performed in spite of a request for reduction of the NOx into a state in which reduction of the NOx is able to be performed, the level of concentration upon addition of the reducing agent is changed based on the amount of the NOx stored in the NOx storage reduction catalyst and the temperature of the NOx storage reduction catalyst.Type: ApplicationFiled: June 11, 2007Publication date: November 12, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Taro Aoyama, Yasuaki Nakano
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Patent number: 7506502Abstract: In an exhaust gas purifying system including two NOx catalysts disposed in series with each other on an exhaust passage, oxides occluded in the NOx catalysts can be reduced appropriately. When the oxides occluded in an upstream or downstream NOx catalyst are reduced, the surrounding atmosphere of each NOx catalyst is changed between a reducing atmosphere and an oxidative atmosphere. The air-fuel ratio of exhaust gas upstream of the upstream NOx catalyst is made lower when the surrounding atmosphere of the downstream NOx catalyst is changed into a reducing atmosphere than when the surrounding atmosphere of the upstream NOx catalyst is changed into a reducing atmosphere, and the duration of the oxidative atmosphere is made longer when the surrounding atmosphere of the downstream NOx catalyst is changed into an oxidative atmosphere than when the surrounding atmosphere of the upstream NOx catalyst is changed into an oxidative atmosphere.Type: GrantFiled: September 13, 2004Date of Patent: March 24, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasuaki Nakano, Shinya Hirota
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Publication number: 20090000277Abstract: A fuel addition valve that adds fuel into the exhaust gas passage of the engine in the form of fine fuel droplets, an upstream NOx adsorption-reduction catalyst, and a downstream NOx adsorption-reduction catalyst are arranged in this order. Platinum Pt and palladium Pd, as noble metal, are supported on the downstream NOx adsorption-reduction NOx catalyst such that the ratio of the mole number of the platinum Pt to the sum of the mole numbers of the platinum Pt and the palladium Pd is approx. 50% to approx. 80%. Only platinum Pt is supported on the upstream NOx adsorption-reduction catalyst. According to this structure, even when liquid fuel is supplied into exhaust gas, NOx can be effectively released from the NOx adsorption-reduction catalyst, and further the amount of NOx that the NOx adsorption-reduction catalyst can adsorb at a low temperature increases.Type: ApplicationFiled: September 6, 2007Publication date: January 1, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Yoshida, Yasuaki Nakano, Tadashi Watanabe, Kotaro Hayashi, Takamitsu Asanuma
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Publication number: 20080276597Abstract: An object of the present invention is to perform removal of NOx in an exhaust gas purification system for an internal combustion engine equipped with an NOx catalyst while suppressing the consumption amount of reducing agent used for NOx removal even when the NOx catalyst is deteriorated. To achieve the object, when the degree of deterioration of the NOx catalyst is lower than or equal to a specific deterioration degree, the air-fuel ratio of the exhaust gas flowing into the NOx catalyst is adjusted to the stoichiometric air-fuel ratio or a rich air-fuel ratio. On the other hand, when it is determined that the degree of deterioration of the NOx catalyst is higher than the specific deterioration degree, the air-fuel ratio of the exhaust gas flowing into the NOx catalyst is adjusted to a specific lean air-fuel ratio.Type: ApplicationFiled: March 20, 2006Publication date: November 13, 2008Inventor: Yasuaki Nakano
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Publication number: 20070202026Abstract: The invention provides a technology that enables to prevent sulfur components contained in reducing agent added from flowing into an NOx catalyst thereby keeping a high NOx removing rate. An S-trapping catalyst 11 for trapping sulfur components contained in exhaust gas discharged from an internal combustion engine 1, an S-trapping catalyst 12 for trapping sulfur components contained in reducing agent added to the exhaust gas from which sulfur components have been trapped by the S-trapping catalyst 11 are provided, thereby preventing an NOx catalyst 14 from being poisoned by sulfur.Type: ApplicationFiled: December 9, 2005Publication date: August 30, 2007Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kohei Yoshida, Shinya Hirota, Yasuaki Nakano
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Patent number: 7181904Abstract: An SOx trap catalyst (11) able to trap SOx contained in exhaust gas is arranged in an engine exhaust passage upstream of an NOx storing catalyst (12). When the SOx trap rate by the SOx trap catalyst (11) falls, the air-fuel ratio of the exhaust gas flowing into the SOx trap catalyst (11) is maintained lean and in that state the SOx trap catalyst (11) is raised in temperature. The SOx trapped at that time diffuses inside the SOx trap catalyst (11), whereby the SOx trap rate is restored.Type: GrantFiled: October 21, 2004Date of Patent: February 27, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kohei Yoshida, Shinya Hirota, Yasuaki Nakano
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Patent number: 7146800Abstract: An exhaust purification device, including a NOx storing catalyst comprised of a precious metal catalyst and NOx absorbent, arranged in an engine exhaust passage, which increases the ratio of the nitrogen dioxide to the nitrogen monoxide produced when burning fuel under a lean air-fuel ratio when the NOx storing catalyst is not active compared with the time when the NOx storing catalyst is active under the same engine operating conditions and stores the nitrogen dioxide contained in the exhaust gas in the NOx absorbent at that time.Type: GrantFiled: June 14, 2004Date of Patent: December 12, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shunsuke Toshioka, Shinya Hirota, Takamitsu Asanuma, Yasuaki Nakano, Kohei Yoshida
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Publication number: 20060064969Abstract: An SOx trap catalyst (11) able to trap SOx contained in exhaust gas is arranged in an engine exhaust passage upstream of an NOx storing catalyst (12). When the SOx trap rate by the SOx trap catalyst (11) falls, the air-fuel ratio of the exhaust gas flowing into the SOx trap catalyst (11) is maintained lean and in that state the SOx trap catalyst (11) is raised in temperature. The SOx trapped at that time diffuses inside the SOx trap catalyst (11), whereby the SOx trap rate is restored.Type: ApplicationFiled: October 21, 2004Publication date: March 30, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Yoshida, Shinya Hirota, Yasuaki Nakano
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Publication number: 20060037312Abstract: A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.Type: ApplicationFiled: October 4, 2004Publication date: February 23, 2006Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kohei Yoshida, Shinya Hirota, Takamitsu Asanuma, Yasuaki Nakano, Shunsuke Toshioka
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Patent number: 6988360Abstract: An exhaust emission purification device comprises a sulfur component holding agent arranged on the exhaust path of an internal combustion engine for holding a sulfur component, a NOx holding agent arranged downstream of the sulfur component holding agent in the exhaust gas for holding NOx and the sulfur components when the air-fuel ratio of the exhaust gas flowing thereinto is lean, and a reducing agent adding unit for adding a reducing agent to the exhaust gas flowing into the NOx holding agent. The concentration of the sulfur component contained in the reducing agent added by the reducing agent adding unit is lower than the concentration of at least the sulfur component contained in the fuel supplied to the combustion chamber of the internal combustion engine. Thus, the sulfur poisoning of the exhaust emission purifier can be avoided while at the same time reducing the fuel consumption rate.Type: GrantFiled: July 17, 2003Date of Patent: January 24, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichi Kimura, Shinya Hirota, Yoshimitsu Henda, Kazuhiro Itoh, Takamitsu Asanuma, Shunsuke Toshioka, Yasuaki Nakano, Koichiro Nakatani, Akira Mikami
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Publication number: 20060010854Abstract: An exhaust purification catalyst (11) for purifying NOx under a lean air-fuel ratio is arranged in exhaust passage of an internal combustion engine. As a catalyst carrier (50) of this exhaust purification catalyst (11), alumina, which has base points on the carrier surface, is used. The surface of the alumina is made to carry platinum (51) dispersed on it without forming a layer of a NOx absorbent able to absorb NOx. The air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (11) is temporarily switched from lean to rich before the entire surface of the platinum (51) suffers from oxygen poisoning.Type: ApplicationFiled: September 8, 2003Publication date: January 19, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Nakano, Shinya Hirota, Toshiaki Tanaka, Akira Mikami
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Patent number: 6956008Abstract: A storage-reduction type NOx purifying catalyst includes a monolith substrate having formed thereon a coat layer containing a cerium-zirconium composite oxide and a cerium-free oxide, a noble metal and an NOx storing material being supported on the coat layer and the cerium content of the cerium-zirconium composite oxide being less than 30 mol % based on the total molar number of metal atoms contained.Type: GrantFiled: May 13, 2003Date of Patent: October 18, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Takeshima, Kohei Yoshida, Yasuaki Nakano
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Patent number: 6955041Abstract: An exhaust gas purifying apparatus for an internal combustion engine, wherein the efficiency of exhaust gas purification is enhanced by optimally controlling the operating condition of a plasma generator mounted in an exhaust passage in accordance with the exhaust gas atmosphere. The exhaust gas purifying apparatus includes a detection unit for detecting exhaust water content and exhaust temperature; and a control unit for controlling at least one of two factors, frequency or voltage of an AC voltage used to operate the plasma generator mounted in the exhaust passage, in accordance with the detected exhaust water content and exhaust temperature.Type: GrantFiled: March 6, 2002Date of Patent: October 18, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Takeshima, Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Yasuaki Nakano, Kohei Yoshida