Patents by Inventor Masahiro Yamakage
Masahiro Yamakage 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: 8208143Abstract: An exhaust gas analyzer capable of real-time analysis of the concentration, temperature, and the like of an exhaust gas component in a cross-section of an exhaust path in a spot-wise manner reduces analysis cost. An exhaust gas analyzer (10) comprises sensor units (11) to (14) disposed along the exhaust path, which comprises an exhaust manifold (3) for the engine (2) discharging exhaust gas, an exhaust tube (4), a first catalyst device (5), a second catalyst device (6), a muffler (7), and an exhaust pipe (8). Each sensor unit includes an optical fiber (25) for irradiating the exhaust gas with laser light, and a detector (26) for receiving the laser light emitted by the optical fiber that has been transmitted through the exhaust gas. Based on the laser light received by the detector, the condition of an exhaust gas component, such as its concentration, temperature, and the like, is measured for the analysis of the exhaust gas.Type: GrantFiled: April 28, 2006Date of Patent: June 26, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Katsutoshi Goto, Masahiro Yamakage, Yoshihiro Deguchi, Taketoshi Yamaura
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Patent number: 8155890Abstract: An exhaust gas analysis method comprises applying a laser beam to the exhaust gas discharged from an internal combustion engine, receiving the laser beam that has passed through the exhaust gas, and measuring the concentration of any of the components contained in the exhaust gas based on the received laser beam. The exhaust gas analysis method further comprises detecting the absorption spectrum of the laser beam absorbed in the exhaust gas by using the received laser beam, calculating the concentration of the specific gas component by using the absorption spectrum, calculating the temperature of the exhaust gas by using the absorption spectrum, calculating the pressure of the exhaust gas by using the absorption spectrum, correcting the calculated concentration of the component contained in the exhaust gas by using the calculated temperature, correcting the concentration by using the calculated pressure, and outputting the true concentration value.Type: GrantFiled: December 15, 2006Date of Patent: April 10, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Katsutoshi Goto, Masahiro Yamakage, Tomoyasu Iwase, Tokio Okano, Yoshihiro Deguchi, Masanobu Mizoguchi, Atushi Takita, Norihiro Fukuda
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Patent number: 8085404Abstract: A gas analyzer capable of measuring a concentration of a gas component in gas at sensor units provided at a plurality of positions in real time by decreasing the number of signals input from the sensor units to an analyzer so as to reduce a data amount input to the analyzer and a gas analyzing method. The gas analyzing method includes the steps of: demultiplexing laser light by a demultiplexer into measurement laser light and reference laser light; letting the measurement laser light pass through gas to be received by a photoreceiver; finding an absorption spectrum absorbed by a gas component in the gas based on a light intensity of the received measurement laser light and of the reference laser light; and analyzing the absorption spectrum to measure a concentration of the gas component.Type: GrantFiled: August 23, 2007Date of Patent: December 27, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiro Yamakage, Katsutoshi Goto, Kenji Muta, Yoshihiro Deguchi, Shinichiro Asami, Satoshi Fukada
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Patent number: 7936460Abstract: An exhaust gas analyzer of the present invention includes a sensor unit 11 installed in an exhaust path from an engine, applies laser light to exhaust gas emitted from the engine and receives laser light that has passed through the exhaust gas so as to measure the concentration of a component contained in the gas based on the received laser light. To an aperture 16 formed in a sensor base 15 of the sensor unit 11, an adjustment ring 40 in a circumferential face of which small holes 41 serving as a laser light passage portion is formed and whose inner circumferential face serves as an exhaust gas passage opening 21 is detachably fitted, whereby the sensor unit can be attached so as to conform to different inner diameters of exhaust tubes.Type: GrantFiled: May 29, 2007Date of Patent: May 3, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Tomoyasu Iwase, Katsutoshi Goto, Masahiro Yamakage, Tokio Okano, Yoshihiro Deguchi, Minoru Danno, Masazumi Tanoura, Masao Watanabe, Satoshi Fukada
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Patent number: 7926332Abstract: An exhaust gas analyzer and an exhaust gas analyzing method capable of analyzing the concentration of particulate matter contained in exhaust gas from an internal combustion in real time are provided.Type: GrantFiled: December 27, 2006Date of Patent: April 19, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiro Yamakage, Katsutoshi Goto, Yoshihiro Deguchi, Kenji Muta, Akio Kondou
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Publication number: 20100264315Abstract: This invention provides a hydrocarbon concentration measuring apparatus, which, even when the concentration and composition of hydrocarbons contained in an object gas to be measured vary, can measure the concentration of the hydrocarbons with good response and good accuracy, and a hydrocarbon measuring method. Light with a waveband including a common absorption region, which is absorbed by a single or a plurality of chemical species, is applied to the object gas by an infrared irradiation equipment. The light applied to the object gas is detected with a line sensor. The absorbance in the common absorption region of the object gas is computed with an analyzer based on the detected light. The sum of concentrations of chemical species, which absorb light in the waveband in the common absorption region, in the single or plurality of chemical species contained in the object gas, is computed with the analyzer based on the absorbance.Type: ApplicationFiled: October 28, 2008Publication date: October 21, 2010Inventors: Takahiro Okada, Seiichi Matsumoto, Masahiro Yamakage, Tomoyasu Iwase, Shigenobu Tachibana, Kenji Muta, Masazumi Tanoura, Satoshi Fukada, Ichiro Awaya, Kazuhiro Akihama, Taketoshi Fujikawa, Masami Yamamoto, Ayako Ohshima
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Publication number: 20090323068Abstract: A gas analyzer capable of measuring a concentration of a gas component in gas at sensor units provided at a plurality of positions in real time by decreasing the number of signals input from the sensor units to an analyzer so as to reduce a data amount input to the analyzer and a gas analyzing method. The gas analyzing method includes the steps of: demultiplexing laser light by a demultiplexer into measurement laser light and reference laser light; letting the measurement laser light pass through gas to be received by a photoreceiver; finding an absorption spectrum absorbed by a gas component in the gas based on a light intensity of the received measurement laser light and of the reference laser light; and analyzing the absorption spectrum to measure a concentration of the gas component.Type: ApplicationFiled: August 23, 2007Publication date: December 31, 2009Applicants: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiro Yamakage, Katsutoshi Goto, Kenji Muta, Yoshihiro Deguchi, Shinichiro Asami, Satoshi Fukada
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Publication number: 20090248350Abstract: A method for analyzing a temperature of exhaust gas includes calculating an approximate temperature at least one time by fitting a measured spectrum to a portion of theoretical spectra defined in association with a first temperature range using a temperature determined in the an immediately previous preceding temperature analysis as a reference, and then determining a calculated temperature by fitting the measured spectrum to all the theoretical spectra over a second temperature range that is narrower than the first temperature range, using the approximate temperature as a reference.Type: ApplicationFiled: December 17, 2007Publication date: October 1, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masahiro Yamakage, Kenji Muta, Yoshihiro Deguchi, Norihiro Fukuda, Shinichiro Asami
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Publication number: 20090229250Abstract: An exhaust gas analyzer and an exhaust gas analyzing method capable of analyzing the concentration of particulate matter contained in exhaust gas from an internal combustion in real time are provided.Type: ApplicationFiled: December 27, 2006Publication date: September 17, 2009Inventors: Masahiro Yamakage, Katsutoshi Goto, Yoshihiro Deguchi, Kenji Muta, Akio Kondou
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Publication number: 20090164138Abstract: An exhaust gas analysis method comprises applying a laser beam to the exhaust gas discharged from an internal combustion engine, receiving the laser beam that has passed through the exhaust gas, and measuring the concentration of any of the components contained in the exhaust gas based on the received laser beam. The exhaust gas analysis method further comprises detecting the absorption spectrum of the laser beam absorbed in the exhaust gas by using the received laser beam (S1), calculating the concentration of the specific gas component by using the absorption spectrum (S2), calculating the temperature of the exhaust gas by using the absorption spectrum (S3), calculating the pressure of the exhaust gas by using the absorption spectrum (S4 to S6), correcting the calculated concentration of the component contained in the exhaust gas by using the calculated temperature (S7), correcting the concentration by using the calculated pressure (S8), and outputting the true concentration value (S9).Type: ApplicationFiled: December 15, 2006Publication date: June 25, 2009Inventors: Katsutoshi Goto, Masahiro Yamakage, Tomoyasu Iwase, Tokio Okano, Yoshihiro Deguchi, Masanobu Mizoguchi, Atushi Takita, Norihiro Fukuda
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Publication number: 20090095918Abstract: An exhaust gas analyzer of the present invention includes a sensor unit 11 installed in an exhaust path from an engine, applies laser light to exhaust gas emitted from the engine and receives laser light that has passed through the exhaust gas so as to measure the concentration of a component contained in the gas based on the received laser light. To an aperture 16 formed in a sensor base 15 of the sensor unit 11, an adjustment ring 40 in a circumferential face of which small holes 41 serving as a laser light passage portion is formed and whose inner circumferential face serves as an exhaust gas passage opening 21 is detachably fitted, whereby the sensor unit can be attached so as to conform to different inner diameters of exhaust tubes.Type: ApplicationFiled: May 29, 2007Publication date: April 16, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tomoyasu Iwase, Katsutoshi Goto, Masahiro Yamakage, Tokio Okano, Yoshihiro Deguchi, Minoru Danno, Masazumi Tanoura, Masao Watanabe, Satoshi Fukada
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Publication number: 20090039284Abstract: An exhaust gas analyzer capable of real-time analysis of the concentration, temperature, and the like of an exhaust gas component in a cross-section of an exhaust path in a spot-wise manner reduces analysis cost. An exhaust gas analyzer (10) comprises sensor units (11) to (14) disposed along the exhaust path, which comprises an exhaust manifold (3) for the engine (2) discharging exhaust gas, an exhaust tube (4), a first catalyst device (5), a second catalyst device (6), a muffler (7), and an exhaust pipe (8). Each sensor unit includes an optical fiber (25) for irradiating the exhaust gas with laser light, and a detector (26) for receiving the laser light emitted by the optical fiber that has been transmitted through the exhaust gas. Based on the laser light received by the detector, the condition of an exhaust gas component, such as its concentration, temperature, and the like, is measured for the analysis of the exhaust gas.Type: ApplicationFiled: April 28, 2006Publication date: February 12, 2009Inventors: Katsutoshi Goto, Masahiro Yamakage, Yoshihiro Deguchi, Taketoshi Yamaura