Patents by Inventor Sakutaro Hoshi
Sakutaro Hoshi 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: 10036295Abstract: A aqueous urea solution supply device for an engine is provided with a tank that stores aqueous urea solution, a valve configured to add the aqueous urea solution to exhaust gas, and a passage configured to supply the aqueous urea solution in the tank to the valve. When a pressure of the aqueous urea solution supplied to the valve is equal to or lower than a predetermined pressure and the amount of the aqueous urea solution in the tank is equal to or smaller than a predetermined threshold, an electronic control unit determines that the aqueous urea solution in an amount required for cooling of the valve cannot be supplied from the tank to the valve and executes a return control for returning the aqueous urea solution in the valve to the tank.Type: GrantFiled: May 25, 2016Date of Patent: July 31, 2018Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomihisa Tsuchiya, Naoya Okamoto, Takahiro Kiyofuji, Sakutaro Hoshi
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Patent number: 9562461Abstract: An exhaust gas control system of an internal combustion engine includes a urea water tank, a heater, a purifying device, a notification device, and a controller. The controller is configured to determine whether frozen urea water is left or not. The controller is configured to determine whether liquid urea water capable of being pumped out is not left or not. The controller is configured to estimate a suppliable amount of the urea water to the urea water tank in response to a state where the frozen urea water is left, and the controller configured to control the notification device so as to give a notification for prompting a supply of the suppliable amount of the urea water to the urea water tank in response to a state where liquid urea water capable of being pumped out is not left.Type: GrantFiled: March 4, 2014Date of Patent: February 7, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomihisa Tsuchiya, Sakutaro Hoshi
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Publication number: 20160348555Abstract: A aqueous urea solution supply device for an engine is provided with a tank that stores aqueous urea solution, a valve configured to add the aqueous urea solution to exhaust gas, and a passage configured to supply the aqueous urea solution in the tank to the valve. When a pressure of the aqueous urea solution supplied to the valve is equal to or lower than a predetermined pressure and the amount of the aqueous urea solution in the tank is equal to or smaller than a predetermined threshold, an electronic control unit determines that the aqueous urea solution in an amount required for cooling of the valve cannot be supplied from the tank to the valve and executes a return control for returning the aqueous urea solution in the valve to the tank.Type: ApplicationFiled: May 25, 2016Publication date: December 1, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomihisa TSUCHIYA, Naoya OKAMOTO, Takahiro KIYOFUJI, Sakutaro HOSHI
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Patent number: 9297287Abstract: An exhaust gas control apparatus includes a control device controlling a urea addition valve for adding urea from an upstream side of a NOx reduction catalyst. The control device obtains an ammonia adsorption amount distribution through the NOx reduction catalyst. When an ammonia adsorption amount in a predetermined part on a downstream side equals or exceeds a predetermined threshold, the control device controls the urea addition valve to stop the urea supply or reduce the amount thereof. The urea addition valve is controlled based on an adsorption amount distribution obtained from a model on which the catalyst is divided into cells such that an ammonia adsorption amount in a first cell positioned furthest upstream equals or exceeds a predetermined threshold close to a saturation adsorption amount and an ammonia adsorption amount in a second cell positioned downstream of the first cell reaches a predetermined target value smaller than the threshold.Type: GrantFiled: September 21, 2011Date of Patent: March 29, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shinya Hirota, Shunsuke Toshioka, Akira Mikami, Koichiro Fukuda, Sakutaro Hoshi, Takashi Endo, Ryoichi Hibino, Matsuei Ueda, Akihiko Asano, Takafumi Yamauchi, Akira Shichi, Makoto Koike, Masatoshi Maruyama, Masakazu Sakata
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Publication number: 20160003120Abstract: An exhaust gas control system of an internal combustion engine includes a urea water tank, a heater, a purifying device, a notification device, and a controller. The controller is configured to determine whether frozen urea water is left or not. The controller is configured to determine whether liquid urea water capable of being pumped out is not left or not. The controller is configured to estimate a suppliable amount of the urea water to the urea water tank in response to a state where the frozen urea water is left, and the controller configured to control the notification device so as to give a notification for prompting a supply of the suppliable amount of the urea water to the urea water tank in response to a state where liquid urea water capable of being pumped out is not left.Type: ApplicationFiled: March 4, 2014Publication date: January 7, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomihisa TSUCHIYA, Sakutaro HOSHI
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Patent number: 9140164Abstract: An exhaust gas purification device for an internal combustion engine purifies exhaust gas in a first exhaust path and a second exhaust path. The device includes a confluent path. The confluent path extends from a confluent section of the first exhaust path and the second exhaust path. A first auxiliary NOx catalyst is provided in the first exhaust path. A second auxiliary NOx catalyst is provided in the second exhaust path. A main NOx catalyst is provided in the confluent path. A first addition section adds an ammonia source in a first addition amount to a section upstream of the first auxiliary NOx catalyst to supply urea water to the first auxiliary NOx catalyst. A second addition section adds an ammonia source in a second addition amount to a section upstream of the second auxiliary NOx catalyst to supply urea water to the second auxiliary NOx catalyst.Type: GrantFiled: November 21, 2012Date of Patent: September 22, 2015Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shunsuke Toshioka, Koichiro Fukuda, Shigeki Nakayama, Noriyoshi Takahashi, Atsushi Kidokoro, Sakutaro Hoshi, Satoshi Watanabe
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Publication number: 20150096286Abstract: An exhaust gas purification device for an internal combustion engine purifies exhaust gas in a first exhaust path and a second exhaust path. The device includes a confluent path. The confluent path extends from a confluent section of the first exhaust path and the second exhaust path. A first auxiliary NOx catalyst is provided in the first exhaust path. A second auxiliary NOx catalyst is provided in the second exhaust path. A main NOx catalyst is provided in the confluent path. A first addition section adds an ammonia source in a first addition amount to a section upstream of the first auxiliary NOx catalyst to supply urea water to the first auxiliary NOx catalyst. A second addition section adds an ammonia source in a second addition amount to a section upstream of the second auxiliary NOx catalyst to supply urea water to the second auxiliary NOx catalyst.Type: ApplicationFiled: November 21, 2012Publication date: April 9, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke Toshioka, Koichiro Fukuda, Shigeki Nakayama, Noriyoshi Takahashi, Atsushi Kidokoro, Sakutaro Hoshi, Satoshi Watanabe
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Publication number: 20130247543Abstract: An exhaust gas control apparatus includes a control device controlling a urea addition valve for adding urea from an upstream side of a NOx reduction catalyst. The control device obtains an ammonia adsorption amount distribution through the NOx reduction catalyst. When an ammonia adsorption amount in a predetermined part on a downstream side equals or exceeds a predetermined threshold, the control device controls the urea addition valve to stop the urea supply or reduce the amount thereof. The urea addition valve is controlled based on an adsorption amount distribution obtained from a model on which the catalyst is divided into cells such that an ammonia adsorption amount in a first cell positioned furthest upstream equals or exceeds a predetermined threshold close to a saturation adsorption amount and an ammonia adsorption amount in a second cell positioned downstream of the first cell reaches a predetermined target value smaller than the threshold.Type: ApplicationFiled: September 21, 2011Publication date: September 26, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, DENSO CORPORATIONInventors: Shinya Hirota, Shunsuke Toshioka, Akira Mikami, Koichiro Fukuda, Sakutaro Hoshi, Takashi Endo, Ryoichi Hibino, Matsuei Ueda, Akihiko Asano, Takafumi Yamauchi, Akira Shichi, Makoto Koike, Masatoshi Maruyama, Masakazu Sakata
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Patent number: 8539757Abstract: An exhaust purification apparatus for an internal combustion engine according to the present invention includes a heated gas generation apparatus configured to generate heated gas utilizing exhaust gas flowing through an exhaust passage. The heated gas generation apparatus includes a catalyst configured to provide an oxidation function, a fuel supply nozzle, and a heater. An exhaust purification unit is provided downstream of the heated gas generation apparatus. An incoming gas temperature of the exhaust purification unit is detected and estimated. An actual incoming gas temperature being a detected value and an estimated incoming gas temperature both acquired when at least the fuel supply nozzle is actuated are compared with each other. Based on the result of the comparison, the apparatus detects one of poisoning of the catalyst with HC and degradation of the catalyst. Thus, the heated gas generation apparatus is prevented from discharging HC.Type: GrantFiled: January 14, 2010Date of Patent: September 24, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinya Hirota, Toru Sasatani, Sakutaro Hoshi, Hiroshi Fujimoto
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Patent number: 8409536Abstract: A technique that, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH3 from passing through a selective reduction type NOx catalyst to a downstream side thereof. The selective reduction type NOx catalyst has an active spot which purifies NOx by the use of NH3, and an adsorption site which adsorbs NH3, wherein a vicinity site, which is located in the vicinity of the active spot, and a distant site, which is located distant from the active spot, exist in the adsorption site. The addition of the reducing agent from the reducing agent addition part is controlled based on the desorption rate of NH3 in the vicinity site so as to continue to cause the NH3 adsorbed to the vicinity site to exist.Type: GrantFiled: May 14, 2010Date of Patent: April 2, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichiro Fukuda, Shinya Hirota, Shunsuke Toshioka, Sakutaro Hoshi
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Publication number: 20130052107Abstract: A technique that, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH3 from passing through a selective reduction type NOx catalyst to a downstream side thereof. The selective reduction type NOx catalyst has an active spot which purifies NOx by the use of NH3, and an adsorption site which adsorbs NH3, wherein a vicinity site, which is located in the vicinity of the active spot, and a distant site, which is located distant from the active spot, exist in the adsorption site. The addition of the reducing agent from the reducing agent addition part is controlled based on the desorption rate of NH3 in the vicinity site so as to continue to cause the NH3 adsorbed to the vicinity site to exist.Type: ApplicationFiled: May 14, 2010Publication date: February 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichiro Fukuda, Shinya Hirota, Shunsuke Toshioka, Sakutaro Hoshi
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Publication number: 20110258989Abstract: An exhaust purification apparatus for an internal combustion engine according to the present invention includes a heated gas generation apparatus configured to generate heated gas utilizing exhaust gas flowing through an exhaust passage. The heated gas generation apparatus includes a catalyst configured to provide an oxidation function, a fuel supply nozzle, and a heater. An exhaust purification unit is provided downstream of the heated gas generation apparatus. An incoming gas temperature of the exhaust purification unit is detected and estimated. An actual incoming gas temperature being a detected value and an estimated incoming gas temperature both acquired when at least the fuel supply nozzle is actuated are compared with each other. Based on the result of the comparison, the apparatus detects one of poisoning of the catalyst with HC and degradation of the catalyst. Thus, the heated gas generation apparatus is prevented from discharging HC.Type: ApplicationFiled: January 14, 2010Publication date: October 27, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Hirota, Toru Sasatani, Sakutaro Hoshi, Hiroshi Fujimoto
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Publication number: 20090211231Abstract: An exhaust gas treatment system for an internal combustion engine reduces the amount of NOx in exhaust gas flowing through an exhaust passage of the engine. The system has a plasma generator including two electrodes spaced away from each other in the exhaust passage, a high-frequency power supply connected to one of the electrodes, and a NOx absorber provided between the electrodes.Type: ApplicationFiled: December 23, 2008Publication date: August 27, 2009Inventors: Koji YOSHIDA, Sakutaro Hoshi
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Publication number: 20090178556Abstract: A method is provided for separating gas including diamagnetic materials and paramagnetic materials containing nitrogen oxides and oxygen into diamagnetic materials, nitrogen oxides, and oxygen. The method includes steps of providing a magnetic device along a gas passage, and providing a plurality of flow passages. Each flow passage has one end that is separately connected to the gas passage. The flow passages extend in a direction that a force due to a magnetic field of the magnetic device is applied to the paramagnetic materials in the gas. The method further includes a step of allowing the gas to flow into the flow passages so that the diamagnetic materials or the paramagnetic materials in the gas enter into a corresponding flow passage among the plurality of the flow passages.Type: ApplicationFiled: December 22, 2008Publication date: July 16, 2009Inventors: Sakutaro HOSHI, Koji Yoshida, Atsushi Kidokoro, Shintaro Kawasaki
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Publication number: 20090165439Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust pipe and an energy applying device. Exhaust gas discharged from the internal combustion engine flows into the exhaust pipe. The energy applying device applies energy to the exhaust gas flowing through the exhaust pipe. The energy applied to the exhaust gas is greater than the energy for decomposing nitrogen monoxide (NO) and less than the energy for decomposing nitrogen (N2).Type: ApplicationFiled: December 18, 2008Publication date: July 2, 2009Inventors: Sakutaro HOSHI, Koji Yoshida, Atsushi Kidokoro, Toru Sasatani
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Publication number: 20080286895Abstract: A method of manufacturing an organic device includes the following steps. The first step is a step of forming a plurality of organic elements in the form of a matrix on a brittle substrate. Each of the organic elements is provided with an electrically connecting portion which electrically connects the organic element to an external circuit. The second step is a step of forming a sealing film on each organic element by a wet process with at least a part of the connecting portion covered with an adhesive masking material. The third step is a step of removing an adhesive deposit after peeling off the adhesive masking material. The fourth step is a step of forming a plurality of scribe lines on the brittle substrate. The fifth step is a step of breaking the brittle substrate along the scribe lines.Type: ApplicationFiled: April 22, 2008Publication date: November 20, 2008Inventors: Sakutaro Hoshi, Hiroyasu Kawauchi, Eiki Niida, Masayuki Harada, Yasushi Saito, Yusuke Tsutsui
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Publication number: 20080007157Abstract: A compound for use in an electroluminescent device, including 0.001% to 10% by weight of nanostructure and a polyfluorene polymer. The compound can be used as a light emitting layer of an EL device including a cathode, an anode, and the light emitting layer disposed between the cathode and the anode. The EL device can be manufactured by providing a substrate, providing an anode or cathode on the substrate, and depositing the emitting layer on the substrate. The compound can be manufactured by ultrasonically cutting nanostructures and mixing the nanostructures with a polymer, such as the polyfluorene polymer.Type: ApplicationFiled: July 10, 2006Publication date: January 10, 2008Inventors: David L. Carroll, Sakutaro Hoshi
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Publication number: 20070096112Abstract: Provided is an area light emitting device, including: an EL element which is provided with a structure in which a first electrode layer, a thin film layer including a light-emitting layer, and a second electrode layer are stacked on a substrate in a stated order, which has a predetermined area light emitting region, and in which at least one of the first electrode layer and the second electrode layer is a transparent electrode layer; and an auxiliary electrode, which is located in the area light emitting region of the EL element, formed of a material having higher conductivity than the transparent electrode layer, electrically connected with the transparent electrode layer, and provided with a reflective surface in an outer peripheral portion of the auxiliary electrode.Type: ApplicationFiled: September 7, 2006Publication date: May 3, 2007Inventor: Sakutaro Hoshi
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Patent number: 6833201Abstract: A compound for use in an electro luminescent (EL) device. The compound includes a first substance in combination with a second substance. The first substance includes nanostructures in combination with an equal weight percentage of PPV derivative, whereas the second substance is a PPV derivative. The first substance makes up from greater than 0 wt % to about 3 wt % of the compound, whereas the second substance makes up the remainder. Also, an EL device made from the compound, and a method of making the EL device, are disclosed.Type: GrantFiled: January 31, 2003Date of Patent: December 21, 2004Assignees: Clemson University, Yazaki CorporationInventors: Richard Czerw, David Carroll, Sakutaro Hoshi
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Publication number: 20040150328Abstract: A compound for use in an electro luminescent (EL) device. The compound includes a first substance in combination with a second substance. The first substance includes nanostructures in combination with an equal weight percentage of PPV derivative, whereas the second substance is a PPV derivative. The first substance makes up from greater than 0 wt % to about 3 wt % of the compound, whereas the second substance makes up the remainder. Also, an EL device made from the compound, and a method of making the EL device, are disclosed.Type: ApplicationFiled: January 31, 2003Publication date: August 5, 2004Applicant: Clemson UniversityInventors: Richard Czerw, David Carroll, Sakutaro Hoshi