Patents by Inventor Munehiro Tabata
Munehiro Tabata 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: 6971970Abstract: A regeneration device for the diesel particulate filter (11) which traps particulates in exhaust gas discharged from a vehicle diesel engine (20) has a condition detecting sensor (12) which detects a condition of the diesel particulate filter, a vehicle speed sensor (27) which detects a vehicle speed, and a controller (40) which stores a map defining a predetermined running region of a diesel engine (20) in which regeneration of the filter (11) is possible. The controller (40) is programmed to modify the diesel engine running point to a running point which maintains the vehicle speed and lies within the predetermined running region.Type: GrantFiled: January 7, 2004Date of Patent: December 6, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Takao Inoue, Munehiro Tabata, Junichi Kawashima, Naoya Tsutsumoto, Makoto Otake, Terunori Kondou
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Patent number: 6931842Abstract: A filter (41) traps particulate matter contained in the exhaust gas of an engine (1). The filter (41) is regenerated by burning the trapped particulate matter by raising the temperature of the filter (41). When regeneration conditions are satisfied, a controller (31) raises the exhaust gas temperature to a first target exhaust gas temperature via an exhaust gas temperature adjusting mechanism (10) (S39), and burns the trapped particulate matter to regenerate the filter (41). When the engine (1) has rapidly decelerated during regeneration, the controller (31) decreases the exhaust gas temperature to a second target exhaust gas temperature lower than the first target exhaust gas temperature (S44, S45), and increases the exhaust gas flow rate (S52), thereby preventing the filter (41) from exceeding an upper limiting temperature.Type: GrantFiled: October 28, 2003Date of Patent: August 23, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Makoto Ohtake, Jun-ichi Kawashima, Naoya Tsutsumoto, Munehiro Tabata, Terunori Kondo
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Patent number: 6851258Abstract: An exhaust passage (2) of a diesel engine (1) is provided with a filter (41) for trapping particulate matter. Regeneration of the filter (41) is divided into first to third phases. In the first phase the filter temperature is raised to the combustion temperature of the particulate matter in a short period of time through control of the exhaust gas temperature. In the second phase, the oxygen concentration of the exhaust gas is held at a predetermined low level while the filter temperature is maintained so as to prevent excessive combustion of particulate matter. In the third phase, wherein the amount of trapped particulate matter has been reduced, the oxygen concentration of the exhaust gas is held at a predetermined high level while the filter temperature is maintained so as to complete the combustion of the trapped particulate matter.Type: GrantFiled: June 3, 2003Date of Patent: February 8, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Junichi Kawashima, Naoya Tsutsumoto, Munehiro Tabata, Makoto Otake
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Patent number: 6808845Abstract: The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material.Type: GrantFiled: October 6, 2000Date of Patent: October 26, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Seiji Nonaka, Masakazu Tanahashi, Mikinari Shimada, Tamao Kojima, Munehiro Tabata
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Publication number: 20040204289Abstract: A regeneration device for the diesel particulate filter (11) which traps particulates in exhaust gas discharged from a vehicle diesel engine (20) has a condition detecting sensor (12) which detects a condition of the diesel particulate filter, a vehicle speed sensor (27) which detects a vehicle speed, and a controller (40) which stores a map defining a predetermined running region of a diesel engine (20) in which regeneration of the filter (11) is possible. The controller (40) is programmed to modify the diesel engine running point to a running point which maintains the vehicle speed and lies within the predetermined running region.Type: ApplicationFiled: January 7, 2004Publication date: October 14, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Takao Inoue, Munehiro Tabata, Junichi Kawashima, Naoya Tsutsumoto, Makoto Otake, Terunori Kondou
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Publication number: 20040123590Abstract: A NOx catalyst (10) traps nitrogen oxides in the exhaust gas of a diesel engine (40), and particulate matter is trapped by a filter (41). The sulfur poisoning of the NOx catalyst (10) is eliminated using exhaust gas corresponding to a rich air-fuel ratio. The exhaust gas composition is changed over to a lean air-fuel ratio according to an increase of a particulate matter collection amount during the elimination of sulfur poisoning so that the particulate matter collection amount in the filter (41) does not increase. As a result, when the particulate matter collection amount decreases due to combustion of collected particulate matter, elimination of sulfur poisoning again proceeds using exhaust gas corresponding to a rich air-fuel ratio.Type: ApplicationFiled: November 17, 2003Publication date: July 1, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Munehiro Tabata, Takao Inoue
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Publication number: 20040103654Abstract: A filter (41) traps particulate matter contained in the exhaust gas of an engine (1). The filter (41) is regenerated by burning the trapped particulate matter by raising the temperature of the filter (41). When regeneration conditions are satisfied, a controller (31) raises the exhaust gas temperature to a first target exhaust gas temperature via an exhaust gas temperature adjusting mechanism (10) (S39), and burns the trapped particulate matter to regenerate the filter (41). When the engine (1) has rapidly decelerated during regeneration, the controller (31) decreases the exhaust gas temperature to a second target exhaust gas temperature lower than the first target exhaust gas temperature (S44, S45), and increases the exhaust gas flow rate (S52), thereby preventing the filter (41) from exceeding an upper limiting temperature.Type: ApplicationFiled: October 28, 2003Publication date: June 3, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Makoto Ohtake, Jun-Ichi Kawashima, Naoya Tsutsumoto, Munehiro Tabata, Terunori Kondo
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Publication number: 20040000139Abstract: An exhaust passage (2) of a diesel engine (1) is provided with a filter (41) for trapping particulate matter. Regeneration of the filter (41) is divided into first to third phases. In the first phase the filter temperature is raised to the combustion temperature of the particulate matter in a short period of time through control of the exhaust gas temperature. In the second phase, the oxygen concentration of the exhaust gas is held at a predetermined low level while the filter temperature is maintained so as to prevent excessive combustion of particulate matter. In the third phase, wherein the amount of trapped particulate matter has been reduced, the oxygen concentration of the exhaust gas is held at a predetermined high level while the filter temperature is maintained so as to complete the combustion of the trapped particulate matter.Type: ApplicationFiled: June 3, 2003Publication date: January 1, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Junichi Kawashima, Naoya Tsutsumoto, Munehiro Tabata, Makoto Otake
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Publication number: 20030213231Abstract: The apparatus improves regeneration efficiency of a diesel particulate filter (DPF) that traps particulate matter, reduces pressure loss caused by the filter, and benefits space of a vehicle. Therefor, the DPF that traps particulate matter having a large diameter is connected to or close to an exhaust manifold in an engine, and the DPF that traps particulate matter having a small diameter is disposed in an exhaust pipe downstream of the exhaust manifold and at a location away (under a vehicle floor) from the exhaust manifold.Type: ApplicationFiled: April 9, 2003Publication date: November 20, 2003Applicant: NISSAN MOTOR CO., LTD.Inventor: Munehiro Tabata
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Patent number: 6493210Abstract: The present invention relates to an electrode metal material for batteries, capacitors, etc., used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material includes a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material.Type: GrantFiled: January 4, 2002Date of Patent: December 10, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Seiji Nonaka, Masakazu Tanahashi, Mikinari Shimada, Tamao Kojima, Munehiro Tabata
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Publication number: 20020138958Abstract: The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material.Type: ApplicationFiled: March 29, 2002Publication date: October 3, 2002Inventors: Seiji Nonaka, Masakazu Tanahashi, Mikinari Shimada, Tamao Kojima, Munehiro Tabata
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Publication number: 20020080558Abstract: The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material.Type: ApplicationFiled: January 4, 2002Publication date: June 27, 2002Inventors: Seiji Nonaka, Masakazu Tanahashi, Mikinari Shimada, Tamao Kojima, Munehiro Tabata
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Patent number: 6120937Abstract: In a positive electrode for an alkaline storage battery, a layer is formed between a porous substrate as a core material and an active material including nickel hydroxide filled into the porous substrate. The layer includes an oxide containing cobalt and nickel and/or a hydroxide containing cobalt and nickel. In the hydroxide, the average of an oxidation number of a metal is more than +II. The layer has a high electric conductivity while keeping the high corrosion resistance. A utilization rate of the active material can be improved due to the high electric conductivity. An alkaline storage battery including such an electrode has a good cycle property.Type: GrantFiled: May 11, 1998Date of Patent: September 19, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tamao Kojima, Munehiro Tabata, Tomoyuki Washizaki, Masakazu Tanahashi, Yoshiki Murakami, Satoshi Kaida, Masayoshi Maruta
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Patent number: 5583396Abstract: A metal halide lamp is employed, as a light source, in an optical device such as, for example, an illuminator or an image display. The optical device includes a discharge tube filled with mercury, at least one rare gas, and at least one metal halide, and a pair of electrodes spaced from each other and enclosed in the discharge tube. The optical device also includes an electric circuit, electrically connected to the pair of electrodes, for starting the discharge tube by applying thereto a higher voltage than a voltage to be applied at a steady state to thereby cause an arc discharge in the discharge tube. When the lamp is turned off, power supply thereto from the electric circuit is temporarily interrupted, and when the lamp cools after a first time interval has elapsed subsequent to the interruption of the power supply, a starting voltage is applied to the lamp via the pair of electrodes for a second time interval to cause redischarge.Type: GrantFiled: March 17, 1994Date of Patent: December 10, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Omura Hideaki, Masayuki Wakamiya, Nobuyoshi Takeuchi, Munehiro Tabata
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Patent number: 5512800Abstract: In a metal halide lamp container 1 sealed with mercury and rare gas, GdX.sub.3, LuX.sub.3, and CsX where halogen is iodine, bromine, or their mixture are sealed in a total weight of 1 mg/cc or more, with the weight of CsX defined within a range of 15% or more to 50% or less of the total halides, and the weight ratio of GdX.sub.3 and LuX.sub.3 is set in a range of 0.1.ltoreq.GdX.sub.3 /LuX.sub.3 .ltoreq.10. In addition to GdX.sub.3, LuX.sub.3, and CsX, at least one of thallium halide and dysprosium halide is added. Or DyX.sub.3, LuX.sub.3, NdX.sub.3, and CsX where halogen is iodine, bromine or their mixture are sealed in the specified total weight, with the weight ratio of CsX defined in the above range.Type: GrantFiled: July 13, 1994Date of Patent: April 30, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideaki Omura, Masayuki Wakamiya, Munehiro Tabata, Nobuyoshi Takeuchi
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Patent number: 5131273Abstract: An angular velocity sensor includes a pair of vibratory piezoelectric detecting elements defining detecting planes which are disposed in symmetry about a plane containing the sense axis and out of right-angled orientation with respect to this plane. The detecting elements thus arranged assume a widely spread or flattened V-shaped configuration as viewed from above. Output signals of opposite polarities received from the respective detecting elements are weighted respectively and added together so as to cancel out unwanted leak component signals. Thus, leak component signals resulting from assembling tolerances can be canceled. In this instance, if the characteristics of two sensor elements each including one of the detecting elements are fully equivalent, a leak component signal dependent on a disturbing inertial force can simultaneously be canceled out.Type: GrantFiled: July 6, 1990Date of Patent: July 21, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Munehiro Tabata, Suzushi Kimura, Tadashi Kawamata, Tsunenori Yoshida, Tomio Yoshida
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Patent number: 5110622Abstract: A uniform and dense (non-porous) thin film of metal sulfide with excellent electric characteristics can be prepared by making into a fine mist an organic compound alone or dissolved in a solvent the organic compound containing at least one metal-sulfur bond in the structure thereof, and spraying the organic compound on a heated substrate.Type: GrantFiled: December 4, 1989Date of Patent: May 5, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yo Hasegawa, Kazuyuki Okano, Yasuhito Isozaki, Munehiro Tabata, Chiharu Hayashi, Akira Nakanishi
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Patent number: 5022263Abstract: Provided is a fuel level detector for use in a fuel tank of an automobile or the like which can accurately detect a fuel level with a reduced power consumption exhibiting an improved reliability regardless of the ambient temperatures and the temperatures of liquid fuel in order to overcome the problems involved in a thermistor method and a metal wire method. A spontaneously heated sensing resistor having a high temperature resistance coefficient is formed on a substrate so as to detect a change in the resistance value due to cooling by heat of vaporization at a portion of the sensing resistor which is dipped in fuel as a differential output voltage. In order to prevent errors in the differential output voltage due to the correction of the ambient temperature in the fuel tank, a temperature compensating resistor is provided on the substrate.Type: GrantFiled: August 2, 1989Date of Patent: June 11, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiichi Uriu, Koji Nishida, Munehiro Tabata
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Patent number: 4985071Abstract: A process for producing a thin film of a base metal on a substrate which comprises thermally decomposing in oxidative atmosphere an organic or inorganic compound containing a base metal compound formed on a substrate to form the oxide of the metal and then reducing the oxide by heat-treating it in reductive atmosphere. A temperature sensor, magnetic sensor, and ceramic wiring substrate utilizing the base metal thin film.Type: GrantFiled: January 12, 1989Date of Patent: January 15, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Munehiro Tabata, Chiharu Hayashi, Yasuhito Isozaki, Kazuyuki Okano, Yo Hasegawa