Patents by Inventor Masaru Kakinohana
Masaru Kakinohana 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: 9421495Abstract: To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.Type: GrantFiled: March 12, 2012Date of Patent: August 23, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NGK INSULATORS, LTD.Inventors: Keita Hashimoto, Masaru Kakinohana, Takeo Kobayashi, Tsuyoshi Watanabe, Yoshiyuki Kasai, Tadato Ito
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Publication number: 20140004014Abstract: To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.Type: ApplicationFiled: March 12, 2012Publication date: January 2, 2014Applicants: NGK INSULATORS, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keita Hashimoto, Masaru Kakinohana, Takeo Kobayashi, Tsuyoshi Watanabe, Yoshiyuki Kasai, Tadato Ito
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Publication number: 20130315788Abstract: A catalytic converter has a carrier with a cell structure, and a precious metal catalyst carried on the carrier. The carrier includes a first carrier and a second carrier. The second carrier is provided downstream of the first carrier in a gas flow direction of gas that flows into the catalytic converter. The first carrier has a first peripheral region and a first center region that has a lower cell density than the first peripheral region. The second carrier has a second center region and a second peripheral region that has a lower cell density than the second center region.Type: ApplicationFiled: May 20, 2013Publication date: November 28, 2013Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiromasa SUZUKI, Michiharu NAKANO, Masaru KAKINOHANA, Hiroyuki MATSUBARA, Masakazu MURATA, Naohiro HAYASHI
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Patent number: 8484952Abstract: A device for purification of exhaust gas including: an exhaust gas passage 15 connected to an internal combustion engine 10; a particulate matter trapping device 30 which is disposed in the exhaust gas passage 15, and which traps particulate matters in exhaust gas; ozone supply means 40 which is connected to the exhaust gas passage 15 and on an upstream side of the particulate matter trapping device 30, and which can supply ozone to the particulate matter trapping device 30; and an NO oxidizing catalyst 20 which is disposed in the exhaust gas passage 15 and on an upstream of the ozone supply means 40, and which oxidizes NO in the exhaust gas.Type: GrantFiled: June 6, 2007Date of Patent: July 16, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuji Sakakibara, Yoshihiko Itoh, Koji Yokota, Kouzi Banno, Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Patent number: 8236094Abstract: The present invention provides an exhaust gas purifying device including an electrically insulated hollow cylindrical case, a cylindrical outer circumferential electrode arranged on an inner wall of the hollow cylindrical case, a bar-shaped center electrode held on a center axis of the outer circumferential electrode, and a metallic hollow cylindrical body arranged between the outer circumferential electrode and the center electrode, wherein the metallic hollow cylindrical body is electrically insulated and has a plurality of holes to permit particulate matter to pass therethrough without being accumulated.Type: GrantFiled: March 27, 2008Date of Patent: August 7, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masaru Kakinohana, Hirohito Hirata, Akira Mizuno
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Patent number: 8191353Abstract: A device for controlling an internal combustion engine comprises a device for trapping particulate matter (PM) in exhaust gas in an exhaust passage, means for supplying ozone to the particulate matter trapping device from the upstream thereof to oxidize and remove PM deposited in the device, and means for interrupting the fuel injection of the internal combustion engine upon the execution of ozone supply by the ozone supply means. It is possible to prevent components consuming ozone, such as NOx, from being contained in the exhaust gas of the internal combustion engine, whereby ozone is effectively usable.Type: GrantFiled: July 4, 2007Date of Patent: June 5, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masaru Kakinohana, Hirohito Hirata, Masaya Ibe
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Patent number: 8104272Abstract: There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter (30) for collecting particulate matter in an exhaust gas inside an exhaust passage, wherein the catalyst (38) is supported only in a part of a partition wall (37) of the particulate filter defining a passage (36) on the downstream side of the partition wall (37). In consequence, when ozone is supplied, since the ozone is introduced on the upstream side of the partition wall (37) in which the PM is collected, the ozone does not contact the catalyst supported only in the part of the partition wall defining the passage (36) on the downstream side of the partition wall. Therefore, it is prevented that the ozone is decomposed, and a PM oxidation function is achieved.Type: GrantFiled: October 27, 2006Date of Patent: January 31, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Publication number: 20110286890Abstract: An electrically heated exhaust gas control apparatus includes: a hollow base member that has electroconductivity; a first insulation member that is disposed within the base member and that divides a vertically upper space and a vertically lower space from each other; a honeycomb catalyst formed in each of the vertically upper space and the vertically lower space; a pair of upper electrodes that heat the honeycomb catalyst in the vertically upper space and a pair of lower electrodes that heat the honeycomb catalyst in the vertically lower space; and a control portion that is able to stop electrifying the lower electrodes while continuing to electrify the upper electrodes.Type: ApplicationFiled: May 5, 2011Publication date: November 24, 2011Inventors: Masaru KAKINOHANA, Takahiko Ido
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Patent number: 7954313Abstract: An exhaust purifying system for an internal combustion engine is provided with a plurality of DPFs (30a and 30b) branched and connected to an exhaust passage (15) for collecting particulate matter in an exhaust gas and an ozone supplier for supplying ozone to the upstream side of each of the plurality of DPFs (30a and 30b). The system respectively changes a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between the plurality of DPFs (30a and 30b).Type: GrantFiled: October 17, 2006Date of Patent: June 7, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Patent number: 7946111Abstract: An apparatus and a method for PM purification, where good PM purification performance can be achieved. The PM purification apparatus includes (a) a honeycomb support having an outer periphery-side region and an inner-side region, which carries a PM oxidation catalyst and in which the PM oxidation catalyst loading per unit volume of support in the outer periphery-side region is greater than the PM oxidation catalyst loading per unit volume of support in the inner-side region, (b) a center electrode passing through the center part of the honeycomb support and extending to the exhaust gas flow upstream side, and (c) an outer peripheral electrode disposed on the outer periphery of the honeycomb support and electrically insulated from the center electrode by the honeycomb support. The PM purification method can be performed using the PM purification apparatus.Type: GrantFiled: May 15, 2006Date of Patent: May 24, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masaru Kakinohana, Hirohito Hirata, Masaya Ibe
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Publication number: 20100281856Abstract: A device for purification of exhaust gas including: an exhaust gas passage 15 connected to an internal combustion engine 10; a particulate matter trapping device 30 which is disposed in the exhaust gas passage 15, and which traps particulate matters in exhaust gas; ozone supply means 40 which is connected to the exhaust gas passage 15 and on an upstream side of the particulate matter trapping device 30, and which can supply ozone to the particulate matter trapping device 30; and an NO oxidizing catalyst 20 which is disposed in the exhaust gas passage 15 and on an upstream of the ozone supply means 40, and which oxidizes NO in the exhaust gas.Type: ApplicationFiled: June 6, 2007Publication date: November 11, 2010Inventors: Yuji Sakakibara, Yoshihiko Itoh, Koji Yokota, Kouzi Banno, Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Publication number: 20100275586Abstract: The device for cleaning exhaust gas of the internal combustion engine includes means provided in an exhaust gas passage (15) of the internal combustion engine (10), such as a NOx catalyst (20), a SOx trap catalyst (30) provided at a position upstream from the exhaust gas cleaning means, and means (40, 41) for feeding ozone to a position upstream from the SOx trap catalyst. SOx in the exhaust gas is absorbed by the SOx trap catalyst before reaching the NOx catalyst. Particularly, it is possible to oxidize SOx in the exhaust gas by ozone as oxidizing gas to be an easily decomposable state, whereby SOx is absorbable even at a low temperature. Preferably, the SOx trap catalyst has no active points consisting of precious metal. In such a case, the SOx trap catalyst is prevented from being sulfur-poisoned whereby the deterioration of the SOx absorbing ability is avoidable.Type: ApplicationFiled: November 28, 2006Publication date: November 4, 2010Inventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Publication number: 20100162688Abstract: A fuel injection apparatus (31) comprises an EHD atomizer (32). The EHD atomizer (32) comprises a cylindrical body (33) and a narrow pipe (34) attached to a tip of the cylindrical body (33). The cylindrical body (33) is connected through a fuel introducing pipe (35) to a fuel tank (36), and an electronically-controlled fuel pump (37) is arranged in the fuel introducing pipe (35). A voltage application device (38) is electrically connected to the narrow pipe (34). When the fuel is to be injected, the fuel pump (37) is operated to supply the fuel in the fuel tank (36) through the fuel introducing pipe (35) into the cylindrical body (33) of the EHD atomizer (32). The fuel is then flown through the narrow pipe (34) and is injected from the tip of the narrow pipe (34). At this time, the voltage application device (38) applies a pulse voltage or applies a pulse voltage and a direct-current voltage superimposingly to the narrow pipe (34).Type: ApplicationFiled: April 11, 2008Publication date: July 1, 2010Inventors: Jen-Shin Chang, Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Publication number: 20100101420Abstract: The present invention provides an exhaust gas purifying device comprising an electrically insulated hollow cylindrical case, a cylindrical outer circumferential electrode arranged on an inner wall of the hollow cylindrical case, a bar-shaped center electrode held on a center axis of the outer circumferential electrode, and a metallic hollow cylindrical body arranged between the outer circumferential electrode and the center electrode, wherein the metallic hollow cylindrical body is electrically insulated and has a plurality of holes to permit particulate matter to pass therethrough without being accumulated.Type: ApplicationFiled: March 27, 2008Publication date: April 29, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaru Kakinohana, Hirohito Hirata, Akira Mizuno
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Publication number: 20090235648Abstract: A device for controlling an internal combustion engine comprises a device for trapping particulate matter (PM) in exhaust gas in an exhaust passage, means for supplying ozone to the particulate matter trapping device from the upstream thereof to oxidize and remove PM deposited in the device, and means for interrupting the fuel injection of the internal combustion engine upon the execution of ozone supply by the ozone supply means. It is possible to prevent components consuming ozone, such as NOx, from being contained in the exhaust gas of the internal combustion engine, whereby ozone is effectively usable.Type: ApplicationFiled: July 4, 2007Publication date: September 24, 2009Inventors: Masaru Kakinohana, Hirohito Hirata, Masaya Ibe
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Publication number: 20090205315Abstract: The present invention provides an apparatus and a method for PM purification, where good PM purification performance can be achieved. The PM purification apparatus 10 of the present invention comprises (a) a honeycomb support 13 having an outer periphery-side region 13a and an inner-side region 13b, which carries a PM oxidation catalyst and in which the PM oxidation catalyst loading per unit volume of support in the outer periphery-side region 13a is greater than the PM oxidation catalyst loading per unit volume of support in the inner-side region 13b, (b) a center electrode 12 passing through the center part of the honeycomb support 13 and extending to the exhaust gas flow upstream side, and (c) an outer peripheral electrode 14 disposed on the outer periphery of the honeycomb support 13 and electrically insulated from the center electrode 12 by the honeycomb support 13. The PM purification method of the present invention can be performed using the PM purification apparatus 10 of the present invention.Type: ApplicationFiled: May 15, 2006Publication date: August 20, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaru Kakinohana, Hirohito Hirata, Masaya Ibe
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Publication number: 20090120074Abstract: There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter (30) for collecting particulate matter in an exhaust gas inside an exhaust passage, wherein the catalyst (38) is supported only in a part of a partition wall (37) of the particulate filter defining a passage (36) on the downstream side of the partition wall (37). In consequence, when ozone is supplied, since the ozone is introduced on the upstream side of the partition wall (37) in which the PM is collected, the ozone does not contact the catalyst supported only in the part of the partition wall defining the passage (36) on the downstream side of the partition wall. Therefore, it is prevented that the ozone is decomposed, and a PM oxidation function is achieved.Type: ApplicationFiled: October 27, 2006Publication date: May 14, 2009Inventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Publication number: 20090120070Abstract: An exhaust purifying system for an internal combustion engine is provided with a plurality of DPFs (30a and 30b) branched and connected to an exhaust passage (15) for collecting particulate matter in an exhaust gas and an ozone supplier for supplying ozone to the upstream side of each of the plurality of DPFs (30a and 30b). The system respectively changes a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between the plurality of DPFs (30a and 30b).Type: ApplicationFiled: October 17, 2006Publication date: May 14, 2009Inventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
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Patent number: 7514047Abstract: The present invention relates to an exhaust gas purifying apparatus, for trapping and burning PM, which comprises electrodes and an insulative honeycomb structure. The apparatus is characterized in that the electrodes make an electric field in the honeycomb structure, the electric field not being parallel with the cell passages of the honeycomb structure. Further the apparatus is characterized in that the electrodes make an electric field in the honeycomb structure, and that the honeycomb structure carries at least one metal selected from the group consisting of an alkali metal and an alkali earth metal; a material that generates oxygen radical by conducting an electric current therethrough; a manganese dioxide; and/or a material having a high dielectric constant.Type: GrantFiled: January 9, 2004Date of Patent: April 7, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohito Hirata, Masaru Kakinohana, Hideo Yahagi
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Patent number: 7510600Abstract: A gas purifying apparatus includes an adsorption member (e.g., a honeycomb structural body) that adsorbs particulate matter contained in the gas by the action of an electric field. The apparatus also includes a supply device (e.g., an ozone generator including a discharger, a pulsed power supply, a pump, and a discharge port) that supplies a pro-oxidant to the adsorption member.Type: GrantFiled: February 17, 2006Date of Patent: March 31, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masaya Ibe, Hirohito Hirata, Masaru Kakinohana