Patents by Inventor Hitoshi Onodera
Hitoshi Onodera 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: 20110219748Abstract: A particulate matter purifying material is used for a filter catalyst for purifying particulate matter that is disposed in an exhaust gas flow path of an internal combustion engine, traps the particulate matter in exhaust gas generated in the internal combustion engine, and burns the particulate matter to be deposited, so as to be regenerated.Type: ApplicationFiled: November 20, 2009Publication date: September 15, 2011Inventors: Hiroshi Akama, Hitoshi Onodera, Toru Nishizawa, Yasunari Hanaki, Hideaki Morisaka
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Patent number: 8001772Abstract: The present invention relates to a method for regenerating a filter that traps particulate matter contained in exhaust gas of an internal combustion engine. The regeneration method includes increasing an amount of soot having a low degree of graphitization in the filter. After the amount of soot having the low degree of graphitization is increased, a temperature of the filter is increased.Type: GrantFiled: March 26, 2007Date of Patent: August 23, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Toru Nishizawa, Hiroaki Kaneko, Hitoshi Onodera
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Publication number: 20110131952Abstract: An exhaust gas purifying system (100) includes: a NOx purifying catalyst (34) that is disposed in an exhaust gas flow path (3) to purify nitrogen oxide; and an HC generator (33, 133) that is disposed upstream of the NOx purifying catalyst (34) in the exhaust gas flow path (3) to generate at least one of acetylene, a hydrocarbon with a carbon number of 2 to 5 other than acetylene, and an aromatic hydrocarbon from a hydrocarbon contained in an exhaust gas. In addition, an exhaust gas purifying method using the exhaust gas purifying system includes the step of adjusting an oxygen concentration in the exhaust gas supplied to the HC generation catalyst (33A, 133A) to 0.8 to 1.5 vol % when an air-fuel ratio is stoichiometric or rich.Type: ApplicationFiled: August 10, 2009Publication date: June 9, 2011Inventors: Hitoshi Onodera, Masayuki Fukuhara, Hiroshi Akama
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Publication number: 20110071019Abstract: An exhaust gas purifying catalyst (1) includes: a three-dimensional structural substrate (10) having a plurality of cells (11) partitioned by cell walls (12) having pores (13); and catalyst layers (20) formed in the three-dimensional structural substrate (10). The catalyst layers (20) have pore-cover portions (22) formed on surfaces (13a) of the pores (13) of the cell walls (12). In addition, the catalyst layers (20) of the pore-cover portions (22) have activated pores (22a) with a pore diameter of 0.1 micrometers to 10 micrometers. In the exhaust gas purifying catalyst (1), the obstruction of the vent holes (pores (13)) in the catalyst layers (20) can be controlled, and the pressure loss can be reduced.Type: ApplicationFiled: March 30, 2009Publication date: March 24, 2011Inventors: Yasunari Hanaki, Hiroshi Akama, Hitoshi Onodera, Toru Nishizawa, Yoshiaki Hiramoto, Hideaki Morisaka, Masahiro Takaya
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Publication number: 20100199635Abstract: An exhaust gas purifying system includes: a NOx trapping agent (2) which adsorbs nitrogen oxide when an excess air ratio of exhaust gas is more than 1, and releases nitrogen oxide when the excess air ratio is 1 or less; a NOx purifying catalyst (13) which reduces nitrogen oxide to nitrogen; and an oxygen concentration controller which controls oxygen concentration in the exhaust gas. When the excess air ratio of the exhaust gas is more than 1, nitrogen oxide is adsorbed to the NOx trapping agent (2). When the excess air ratio of the exhaust gas is 1 or less, the oxygen concentration controller controls the oxygen concentration of the exhaust gas at an inlet of the NOx purifying catalyst between 0.8 and 1.5% by volume, so that the NOx purifying catalyst reduces nitrogen oxide released from the NOx trapping agent.Type: ApplicationFiled: July 29, 2008Publication date: August 12, 2010Inventors: Hiroshi Akama, Hitoshi Onodera
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Patent number: 7555895Abstract: In exhaust gas purifying apparatus and method for an internal combustion engine, an abnormality determination of an NOx (Nitrogen Oxides) removing catalyst is executed on the basis of output values of both of a first exhaust gas atmosphere detecting section and a second exhaust gas atmosphere detecting section (for example, oxygen concentration sensors interposed in an exhaust passage of the engine between inlet and outlet portions of the NOx removing catalyst) from a time at which an output value of the first exhaust gas atmosphere detecting section is varied to a first predetermined value to a time at which the output value of the second exhaust gas atmosphere detecting section is reached to a second predetermined value when an exhaust gas atmosphere varying section (control unit) increases the ratio of a reducing agent in the exhaust gas.Type: GrantFiled: February 19, 2004Date of Patent: July 7, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Takashi Shirakawa, Yasuhisa Kitahara, Hitoshi Onodera, Manabu Miura
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Publication number: 20090133387Abstract: An internal combustion engine (1) comprises a fuel injector (9), a filter (13) which traps particulate matter in exhaust gas, and a catalyst (14) which oxidizes unburnt fuel or carbon monoxide in the exhaust gas on the upstream side of the filter (13). When regeneration of the filter (13) is required, a controller (21) determines a post-injection fuel injection timing and a post-injection fuel injection amount of the fuel injector (9) on the basis of an upstream exhaust gas temperature (Texh) and a catalyst temperature (Tcat) (S16, S17, S19, S20, S22, S23, S25, S26, S28), thereby optimizing the regeneration temperature condition of the filter (13).Type: ApplicationFiled: November 19, 2008Publication date: May 28, 2009Inventors: Toru NISHIZAWA, Hiroaki KANEKO, Hitoshi ONODERA
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Publication number: 20070220868Abstract: The present invention relates to a method for regenerating a filter that traps particulate matter contained in exhaust gas of an internal combustion engine. The regeneration method includes increasing an amount of soot having a low degree of graphitization in the filter. After the amount of soot having the low degree of graphitization is increased, a temperature of the filter is increased.Type: ApplicationFiled: March 26, 2007Publication date: September 27, 2007Applicant: Nissan Motor Co., Ltd.Inventors: Toru Nishizawa, Hiroaki Kaneko, Hitoshi Onodera
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Patent number: 7246488Abstract: An exhaust gas purifying system of the present invention comprises a first catalyst which contains a noble metal and reduces hydrocarbons contained in exhaust gas, and a second catalyst which is disposed downstream of the first catalyst and contains ?-zeolite. In the exhaust gas purifying system, a mixed gas having an air-fuel ratio of not less than 25 is burned in an internal combustion engine, and the internal combustion engine discharges the exhaust gas having an oxygen concentration of not less than 4% continuously or intermittently.Type: GrantFiled: July 19, 2005Date of Patent: July 24, 2007Assignee: Nissan Motor Co., Ltd.Inventors: Masahiro Takaya, Shinji Yamamoto, Hiroaki Kaneko, Hitoshi Onodera
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Publication number: 20050247047Abstract: An exhaust gas purifying system of the present invention comprises a first catalyst which contains a noble metal and reduces hydrocarbons contained in exhaust gas, and a second catalyst which is disposed downstream of the first catalyst and contains ?-zeolite. In the exhaust gas purifying system, a mixed gas having an air-fuel ratio of not less than 25 is burned in an internal combustion engine, and the internal combustion engine discharges the exhaust gas having an oxygen concentration of not less than 4% continuously or intermittently.Type: ApplicationFiled: July 19, 2005Publication date: November 10, 2005Inventors: Masahiro Takaya, Shinji Yamamoto, Hiroaki Kaneko, Hitoshi Onodera
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Patent number: 6932067Abstract: An exhaust gas purifying system of the present invention comprises a first catalyst which contains a noble metal and reduces hydrocarbons contained in exhaust gas, and a second catalyst which is disposed downstream of the first catalyst and contains ?-zeolite. In the exhaust gas purifying system, a mixed gas having an air-fuel ratio of not less than 25 is burned in an internal combustion engine, and the internal combustion engine discharges the exhaust gas having an oxygen concentration of not less than 4% continuously or intermittently.Type: GrantFiled: April 28, 2004Date of Patent: August 23, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Masahiro Takaya, Shinji Yamamoto, Hiroaki Kaneko, Hitoshi Onodera
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Publication number: 20040237515Abstract: An exhaust gas purifying system of the present invention comprises a first catalyst which contains a noble metal and reduces hydrocarbons contained in exhaust gas, and a second catalyst which is disposed downstream of the first catalyst and contains &bgr;-zeolite. In the exhaust gas purifying system, a mixed gas having an air-fuel ratio of not less than 25 is burned in an internal combustion engine, and the internal combustion engine discharges the exhaust gas having an oxygen concentration of not less than 4% continuously or intermittently.Type: ApplicationFiled: April 28, 2004Publication date: December 2, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Masahiro Takaya, Shinji Yamamoto, Hiroaki Kaneko, Hitoshi Onodera
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Patent number: 6823662Abstract: An exhaust gas purifying system for an automotive internal combustion engine includes a NOx treating catalyst for reducing NOx disposed in an exhaust gas passageway of a combustion device, to reduce NOx in presence of reducing components in exhaust gas. Additionally, a hydrogen enriching device is disposed upstream of said NOx treating catalyst with respect to flow of exhaust gas from the combustion device and arranged to increase a ratio of hydrogen to total reducing components in at least one of combustion gas and exhaust gas so as to meet relations represented by following formulae (1) and (2), when reduction of NOx is carried out by the NOx treating catalyst: [H2/TR]d>[H2/TR]u (1) [H2/TR]d≧0.Type: GrantFiled: October 20, 2000Date of Patent: November 30, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Shinji Yamamoto, Hiroyuki Kanesaka, Hitoshi Onodera, Yasunari Hanaki, Katsuo Suga, Hiroshi Morita, Yoshiaki Hiramoto, Hiroaki Kaneko
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Publication number: 20040163381Abstract: In exhaust gas purifying apparatus and method for an internal combustion engine, an abnormality determination of an NOx (Nitrogen Oxides) removing catalyst is executed on the basis of output values of both of a first exhaust gas atmosphere detecting section and a second exhaust gas atmosphere detecting section (for example, oxygen concentration sensors interposed in an exhaust passage of the engine between inlet and outlet portions of the NOx removing catalyst) from a time at which an output value of the first exhaust gas atmosphere detecting section is varied to a first predetermined value to a time at which the output value of the second exhaust gas atmosphere detecting section is reached to a second predetermined value when an exhaust gas atmosphere varying section (control unit) increases the ratio of a reducing agent in the exhaust gas.Type: ApplicationFiled: February 19, 2004Publication date: August 26, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Takashi Shirakawa, Yasuhisa Kitahara, Hitoshi Onodera, Manabu Miura
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Patent number: 6708484Abstract: An exhaust gas purifying system for a vehicle includes a hydrogen enriching device that increases a component ratio of hydrogen with respect to reducing gas components in exhaust gas, a NOx treating catalyst and a HC trap catalyst. The hydrogen enriching device, the NOx treating catalyst and the NOx treating catalyst are arrayed in this order in the exhaust gas passageway.Type: GrantFiled: April 3, 2002Date of Patent: March 23, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Hitoshi Onodera, Masahiro Takaya
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Publication number: 20020139112Abstract: An exhaust gas purifying system for a vehicle includes a hydrogen enriching device that increases a component ratio of hydrogen with respect to reducing gas components in exhaust gas, a NOx treating catalyst and a HC trap catalyst. The hydrogen enriching device, the NOx treating catalyst and the NOx treating catalyst are arrayed in this order in the exhaust gas passageway.Type: ApplicationFiled: April 3, 2002Publication date: October 3, 2002Applicant: NISSAN MOTOR CO., LTD.Inventors: Hitoshi Onodera, Masahiro Takaya
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Patent number: 6276132Abstract: An exhaust gas purifying system for an internal combustion engine of an automotive vehicle. The exhaust gas purifying system comprises an exhaust gas composition regulating device for producing a low HC concentration reducing agent in a lean exhaust gas atmosphere where air-fuel ratio is leaner than a stoichiometric value. The exhaust gas composition regulating device is disposed in an exhaust gas passageway of the engine. The low HC concentration reducing agent is low in concentration of hydrocarbons to have an exhaust gas composition having a volume ratio of NOx/HC not less than 50 in the exhaust gas passageway immediately downstream of the exhaust gas composition regulating device. Additionally, a NOx treating catalyst is disposed in the exhaust gas passageway and located downstream of the exhaust gas composition regulating device. The NOx treating catalyst is arranged to reduce NOx in the presence of the low HC concentration reducing agent supplied from the exhaust gas composition regulating device.Type: GrantFiled: June 30, 2000Date of Patent: August 21, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Hiroyuki Kanesaka, Hitoshi Onodera, Katsuo Suga
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Patent number: 5908282Abstract: A component mounting device adapted to mount components such IC or the like on a printed circuit board that includes replaceable pick up nozzles to accommodate different types of components to be picked up. A sensing station is provided that permits the pick up nozzle to be verified as the correct one. The same sensing station is employed to sense both the orientation of a component that is picked up and also whether the component is correctly oriented for deposit. This is done by measuring projected lengths in a plane with a photo sensitive device and by making calculations in accordance with trigonometric relationships.Type: GrantFiled: August 14, 1997Date of Patent: June 1, 1999Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Hitoshi Onodera
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Patent number: 5839186Abstract: A method and apparatus of mounting components and recognizing two different types of components, one by a photographic recognition practice and the other by an optical recognition practice. At least two pick-up devices are carried by a mounting head and a light source and background device is moveable supported by the mounting head into a first position wherein a photographic recognition method can be practiced on a component mounted on one of the pick-up devices, a second position wherein one or both of the pick-up devices may hold components for recognition by the optical device and a third position where a camera carried by the mounting head can be employed for recognizing a substrate. The control routines for each type of sensing operation are disclosed.Type: GrantFiled: June 7, 1995Date of Patent: November 24, 1998Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Hitoshi Onodera
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Patent number: 5741114Abstract: A component mounting device adapted to mount components such IC or the like on a printed circuit board that includes replaceable pick up nozzles to accommodate different types of components to be picked up. A sensing station is provided that permits the pick up nozzle to be verified as the correct one. The same sensing station is employed to sense both the orientation of a component that is picked up and also whether the component is correctly oriented for deposit. This is done by measuring projected lengths in a plane with a photo sensitive device and by making calculations in accordance with trigonometric relationships.Type: GrantFiled: August 9, 1993Date of Patent: April 21, 1998Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Hitoshi Onodera