Patents by Inventor Masahiro Sakanushi
Masahiro Sakanushi 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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Patent number: 7772149Abstract: A Cr trapping agent is disposed so that it contacts with constituting components of the substrate containing Cr. As the Cr trapping agent, an element or Ag is used, wherein the element is stronger in basicity than alkali metals or alkaline earth metals. Since the Cr trapping agent prevents transfer of Cr towards the alkali metals or alkaline earth metals, the reaction between Cr and alkali metals or alkaline earth metals is prevented.Type: GrantFiled: December 6, 2006Date of Patent: August 10, 2010Assignees: Hitachi, Ltd., Honda Motor Co., Ltd., Nippon Steel Materials Co., Ltd.Inventors: Masato Kaneeda, Hidehiro Iizuka, Norihiro Shinotsuka, Masahiro Sakanushi, Kimihiro Tokushima, Hiroki Hosoe, Masayuki Kasuya, Toshio Iwasaki, Shogo Konya
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Publication number: 20090148357Abstract: Use of a metallic material containing chromium as a substrate of an exhaust gas purifying catalyst has a problem that the chromium contained in the substrate migrates to a catalytically active component and reacts with the catalytically active component to reduce exhaust gas purification performance. Thus, a film which inhibits the chromium contained in the substrate from migrating is arranged on the substrate's surface. The film is desirably formed by oxidizing a substrate in the air. It is also desirable that a substrate containing aluminum therein be oxidized to cause aluminum contained in the substrate to separate out and thereby form an alpha-alumina film. The film is preferably such that, when the exhaust gas purifying catalyst is heated at 850° C. in the air for 300 hours, the amount of chromium migrated to the catalytically active component is controlled to 0.5 percent by weight or less based on the catalytically active component.Type: ApplicationFiled: March 31, 2005Publication date: June 11, 2009Inventors: Masato Kaneeda, Hidehiro Iizuka, Norihiro Shinozuka, Masahiro Sakanushi, Kimihiro Tokushima, Hiroki Hosoe, Masayuki Kasuya, Toshio Iwasaki, Shogo Konya
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Publication number: 20070129244Abstract: A Cr trapping agent is disposed so that it contacts with constituting components of the substrate containing Cr. As the Cr trapping agent, an element or Ag is used, wherein the element is stronger in basicity than alkali metals or alkaline earth metals. Since the Cr trapping agent prevents transfer of Cr towards the alkali metals or alkaline earth metals, the reaction between Cr and alkali metals or alkaline earth metals is prevented.Type: ApplicationFiled: December 6, 2006Publication date: June 7, 2007Applicants: Hitachi, Ltd., Honda Motor Co., Ltd., Nippon Steel Materials Co., Ltd.Inventors: Masato Kaneeda, Hidehiro Iizuka, Norihiro Shinotsuka, Masahiro Sakanushi, Kimihiro Tokushima, Hiroki Hosoe, Masayuki Kasuya, Toshio Iwasaki, Shogo Konya
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Patent number: 7157405Abstract: An exhaust emission control system for an internal combustion engine is provided. The exhaust emission control system (4) includes a monolith catalyst (MC) that includes an oxygen storage agent and a noble metal-based three-way catalyst including Pd, Rh, and Pt disposed at an upstream location in the exhaust gas flow in the internal combustion engine (2), and a perovskite-type double oxide having a three-way catalytic function disposed at a downstream location in the exhaust gas flow. The amount C1 of Pd carried is 0.97 g/L?C1?1.68 g/L, the amount C2 of Rh carried is 0.11 g/L?C2?0.2 g/L, the amount C3 of Pt carried is 0.06 g/L?C3?0.11 g/L, the amount C4 of the oxygen storage agent carried is 25 g/L?C4?75 g/L, and the amount C5 of the perovskite-type double oxide carried is 5 g/L?C5?15 g/L.Type: GrantFiled: August 24, 2001Date of Patent: January 2, 2007Assignee: Honda Giken Kogyo Kabushiki Kabushiki KaishaInventors: Norihiko Suzuki, Hideki Uedahira, Hiroshi Oono, Shinichi Kikuchi, Masahiro Sakanushi, Ryoko Yamada, Yoshiaki Matsuzono
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Patent number: 6850165Abstract: The invention provides a catalyst deterioration detecting system that is capable of detecting the degree of deterioration of each catalyst in a catalyst converter which includes two or more catalysts in series. The catalyst deterioration detecting system of an internal-combustion engine according to the invention is provided with a upstream catalyst located on an upstream side of an exhaust system of the internal-combustion engine and a downstream catalyst located on a downstream side of the exhaust system. The device comprises an oxygen density detector which is disposed downstream of the downstream catalyst and a deterioration detector for detecting a deterioration degree of the upstream catalyst based on the output of the oxygen density detector. According to an aspect of the invention, the deterioration detector detects deterioration degree of the downstream catalyst based on the previously detected deterioration degree of the upstream catalyst.Type: GrantFiled: March 21, 2002Date of Patent: February 1, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masahiro Sakanushi, Yoshiaki Matsuzono, Hiroshi Oono, Hideki Uedahra
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Publication number: 20040038814Abstract: An exhaust emission control system for an internal combustion engine is provided. The exhaust emission control system (4) includes a monolith catalyst (MC) that includes an oxygen storage agent and a noble metal-based three-way catalyst including Pd, Rh, and Pt disposed at an upstream location in the exhaust gas flow in the internal combustion engine (2), and a perovskite-type double oxide having a three-way catalytic function disposed at a downstream location in the exhaust gas flow. The amount C1 of Pd carried is 0.97 g/L≦C1≦1.68 g/L, the amount C2 of Rh carried is 0.11 g/L≦C2≦0.2 g/L, the amount C3 of Pt carried is 0.06 g/L≦C3≦0.11 g/L, the amount C4 of the oxygen storage agent carried is 25 g/L≦C4≦75 g/L, and the amount C5 of the perovskite-type double oxide carried is 5 g/L≦C5≦15 g/L.Type: ApplicationFiled: August 20, 2003Publication date: February 26, 2004Inventors: Norihiko Suzuki, Hideki Uedahira, Hiroshi Oono, Shinichi Kikuchi, Masahiro Sakanushi, Ryoko Yamada, Yoshiaki Matsuzono
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Publication number: 20020155040Abstract: An exhaust gas purification device for a lean-burn engine that can be produced at a low cost. The exhaust gas purification device includes a three-way catalyst that, during stoichiometric operation of the engine, removes a lower proportion of CO than the proportion of HC removed. The three-way catalyst is positioned in the device on the upstream side of an exhaust pipe of the lean-burn engine, and a lean NOx catalyst is positioned in the device on the downstream side of the exhaust pipe. A perovskite type double oxide is used as the three-way catalyst instead of a precious metal.Type: ApplicationFiled: April 15, 2002Publication date: October 24, 2002Inventors: Masahiro Sakanushi, Hideki Uedahira, Hiroshi Oono, Yoshiaki Matsuzono
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Publication number: 20020139109Abstract: The invention provides a catalyst deterioration detecting system that is capable of detecting the degree of deterioration of each catalyst in a catalyst converter which includes two or more catalysts in series.Type: ApplicationFiled: March 21, 2002Publication date: October 3, 2002Inventors: Masahiro Sakanushi, Yoshiaki Matsuzono, Hiroshi Oono, Hideki Uedahira
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Patent number: 6332314Abstract: In a catalyzer arrangement in an exhaust system of a multi-cylinder internal combustion engine, each of exhaust pipes connected with exhaust ports of the engine has a first exhaust pipe section extending away from a main body of the engine, a second exhaust pipe section contiguous to the first exhaust pipe section having a first curved portion for turning the second exhaust pipe section toward the main body of the engine, and a third exhaust pipe section contiguous to the second exhaust pipe section having a second curved portion for turning the third exhaust pipe portion away from the main body of the engine. A catalyzer is connected to a downstream side of the third exhaust pipe section and disposed within a space surrounded by the first, second and third exhaust pipe sections. The exhaust pipes are divided into one group positioned near one end of a row of cylinder of the engine and another group positioned near another end of the row of cylinder.Type: GrantFiled: November 20, 2000Date of Patent: December 25, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Junichi Nakade, Takeshi Kurotobi, Masahiro Sakanushi, Fumihiko Maeda
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Patent number: 6327849Abstract: When deterioration of a NOx purifying device due to sulfur contamination is detected, a specific operating state flag FHL is set to “1,” and, at intervals equal to or shorter than, for example, three seconds, the air-fuel ratio of an air-fuel mixture to be supplied to an engine is varied so that it is alternately leaner and richer than the stoichiometric air-fuel ratio. When the temperature TCAT of the NOx purifying device exceeds a deterioration recovery temperature STCAT2 while the air-fuel ratio variation control is being executed, the SOx removing flag FHLSOx is set to “1,” and for a period equivalent to the deterioration recovery time TRSOx, the air-fuel ratio is maintained richer than the stoichiometric air-fuel ratio.Type: GrantFiled: April 28, 2000Date of Patent: December 11, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kenji Sugiura, Hiroshi Ohno, Masahiro Sakanushi, Keiichi Yagisawa
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Patent number: 6128899Abstract: A system for purifying exhaust gas of an internal combustion engine having a NOx reduction catalyst (NOx absorber) installed in the exhaust system of the engine which absorbs NOx in the exhaust gas generated by the engine in a lean environment where a lean fuel mixture is supplied and desorbs to reduce the absorbed NOx in a rich environment where a rich mixture is supplied. In the system, the rich fuel mixture is supplied for a period immediately before cutoff. With the arrangement, the NOx reduction catalyst desorbs the absorbed NOx and is regenerated to absorb NOx sufficiently. At the same time, the NOx reduction catalyst is regenerated from sulfur poisoning, thereby preventing the NOx purification efficiency from being degraded.Type: GrantFiled: April 8, 1999Date of Patent: October 10, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Oono, Masahiro Sakanushi, Nobuaki Takaoka, Toshikatsu Takanohashi
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Patent number: 5638795Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: May 28, 1996Date of Patent: June 17, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5634452Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: May 28, 1996Date of Patent: June 3, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5619973Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: May 28, 1996Date of Patent: April 15, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5611320Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: May 28, 1996Date of Patent: March 18, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5546922Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: September 12, 1995Date of Patent: August 20, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5469833Abstract: A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted.Type: GrantFiled: January 28, 1994Date of Patent: November 28, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Fumio Hara, Akira Fujimura, Yoshihisa Hara, Masahiro Sakanushi
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Patent number: 5345920Abstract: A supercharging pressure control system for supercharged internal combustion engines includes a supercharging pressure control valve for controlling supercharging pressure of intake air, supplied by a supercharger. A desired value of the opening of the supercharging pressure control valve is determined depending on operating conditions of the engine. When the supercharging pressure detected has reached the desired value of the supercharing pressure, a feedback control mode is selected, in which the opening of the supercharging pressure control valve is controlled so as to make the supercharging pressure detected equal to the desired value of the supercharging pressure.Type: GrantFiled: October 14, 1992Date of Patent: September 13, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takuya Sugino, Masahiro Sakanushi, Kenichiro Kinoshita, Yasuyuki Sando