Patents by Inventor Tetsuro Serai
Tetsuro Serai 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: 10443468Abstract: The fuel addition system comprises: a fuel addition valve, a fuel tank, a first pressure storage chamber storing fuel to be supplied to a fuel injector, a supply pump increasing a pressure of fuel inside the fuel tank and supplying the fuel to the first pressure storage chamber, a pressure reduction valve discharging fuel stored in the first pressure storage chamber, a pressure reduction fuel passage supplying fuel discharged from the first pressure storage chamber to the fuel addition valve, and a control device controlling the fuel addition valve and the pressure reduction valve. The control device detects or estimates a temperature of fuel supplied to the fuel addition valve and, when injecting fuel from the fuel addition valve, controls an amount of fuel discharged from the first pressure storage chamber through the pressure reduction valve so that the temperature of the fuel becomes a reference temperature or more.Type: GrantFiled: January 12, 2018Date of Patent: October 15, 2019Assignees: Soken, Inc., Toyota Jidosha Kabushiki KaishaInventors: Tetsuro Serai, Kenichi Tomomatsu, Takayoshi Kojima, Naoki Toda, Kazuhiro Umemoto, Toshihiro Mori, Hiromasa Nishioka
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Publication number: 20180238218Abstract: The fuel addition system comprises: a fuel addition valve, a fuel tank, a first pressure storage chamber storing fuel to be supplied to a fuel injector, a supply pump increasing a pressure of fuel inside the fuel tank and supplying the fuel to the first pressure storage chamber, a pressure reduction valve discharging fuel stored in the first pressure storage chamber, a pressure reduction fuel passage supplying fuel discharged from the first pressure storage chamber to the fuel addition valve, and a control device controlling the fuel addition valve and the pressure reduction valve. The control device detects or estimates a temperature of fuel supplied to the fuel addition valve and, when injecting fuel from the fuel addition valve, controls an amount of fuel discharged from the first pressure storage chamber through the pressure reduction valve so that the temperature of the fuel becomes a reference temperature or more.Type: ApplicationFiled: January 12, 2018Publication date: August 23, 2018Applicants: SOKEN INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuro SERAI, Kenichi TOMOMATSU, Takayoshi KOJIMA, Naoki TODA, Kazuhiro UMEMOTO, Toshihiro MORI, Hiromasa NISHIOKA
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Publication number: 20140095054Abstract: At the time of shifting a fuel property value associated with a first imaginary passage cell as a fuel property value associated with a second imaginary passage cell located on the downstream side thereof, the fuel property value associated with the second imaginary passage cell is corrected in a controller by computing a difference between the fuel property value associated with the first imaginary passage cell and the fuel property value associated with the second imaginary passage cell and multiplying the difference by a correction coefficient. A stoichiometric air/fuel ratio is computed in the controller based on the fuel property value, which is associated with a last one of the imaginary passage cells. Fuel injection of an injector is controlled by the controller based on a computed injection quantity of fuel, which is computed based on the stoichiometric air/fuel ratio.Type: ApplicationFiled: December 5, 2013Publication date: April 3, 2014Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Tetsuro SERAI, Noriyasu AMANO, Hiroki FUJIEDA, Hiroshi NAKAMURA, Akikazu UCHIDA
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Patent number: 7911595Abstract: A liquid fuel property detection apparatus includes a fuel passage, a light emitting device for emitting a light including a plurality of predetermined wavelengths toward the fuel in the passage, a light receiving device for receiving the light passing through the fuel, and a calculation unit for calculating the concentration of at least one of aroma, paraffin and olefin, which are hydrocarbon component components contained in the fuel. The calculation unit calculates the concentration of a specific component, which is one of aroma, paraffin and olefin, based on the reference transmittance of light in the specific component and the actual transmittance calculated from the amount of light emitted by the light emitting device and the amount of light received by the light receiving device with respect to each wavelength of the light.Type: GrantFiled: November 27, 2009Date of Patent: March 22, 2011Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Tetsuro Serai, Kazuki Matsuo, Hiroshi Nakamura
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Publication number: 20100157302Abstract: A liquid fuel property detection apparatus includes a fuel passage, a light emitting device for emitting a light including a plurality of predetermined wavelengths toward the fuel in the passage, a light receiving device for receiving the light passing through the fuel, and a calculation unit for calculating the concentration of at least one of aroma, paraffin and olefin, which are hydrocarbon component components contained in the fuel. The calculation unit calculates the concentration of a specific component, which is one of aroma, paraffin and olefin, based on the reference transmittance of light in the specific component and the actual transmittance calculated from the amount of light emitted by the light emitting device and the amount of light received by the light receiving device with respect to each wavelength of the light.Type: ApplicationFiled: November 27, 2009Publication date: June 24, 2010Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Tetsuro Serai, Kazuki Matsuo, Hiroshi Nakamura
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Publication number: 20100059020Abstract: At the time of shifting a fuel property value associated with a first imaginary passage cell as a fuel property value associated with a second imaginary passage cell located on the downstream side thereof, the fuel property value associated with the second imaginary passage cell is corrected in a controller by computing a difference between the fuel property value associated with the first imaginary passage cell and the fuel property value associated with the second imaginary passage cell and multiplying the difference by a correction coefficient. A stoichiometric air/fuel ratio is computed in the controller based on the fuel property value, which is associated with a last one of the imaginary passage cells. Fuel injection of an injector is controlled by the controller based on a computed injection quantity of fuel, which is computed based on the stoichiometric air/fuel ratio.Type: ApplicationFiled: September 1, 2009Publication date: March 11, 2010Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Tetsuro Serai, Noriyasu Amano, Hiroki Fujieda, Hiroshi Nakamura, Akikazu Uchida
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Publication number: 20080246955Abstract: In a detection of an alcohol concentration, a first light and a second light are irradiated to a mixed liquid including a fossil fuel, an alcohol, and water, and the alcohol concentration is calculated based on amounts of the first light and the second light permeated through the mixed liquid. In the detection, a difference of a transmittance of the fossil fuel with respect to the first light and each transmittance of the alcohol and water with respect to the first light is larger than a first value. In addition, a difference of a transmittance of water with respect to the second light and each transmittance of the fossil fuel and the alcohol with respect to the second light is larger than a second value.Type: ApplicationFiled: March 31, 2008Publication date: October 9, 2008Applicants: NIPPON SOKEN, INC., DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rie Osaki, Naoya Katoh, Noriyasu Amano, Tetsuro Serai, Akikazu Uchida, Yukihiro Tsukasaki, Keiichiro Aoki