Patents by Inventor Yuji Takeo
Yuji Takeo 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: 7201010Abstract: In a compressor control system for a vehicle air conditioner, a hybrid ECU of the vehicle controls a rotation speed of a compressor electric motor. In this case, an output circuit, which outputs a driving signal for driving the compressor electric motor, only needs to be newly provided in the hybrid ECU when a hybrid vehicle or an electric vehicle is manufactured based on an engine vehicle. Therefore, a high cost is not caused even when the output circuit is provided in the hybrid ECU which should be newly designed and manufactured. In addition, because the output circuit does not need to be provided in an air-conditioning ECU which is an existing component of the engine vehicle, the air-conditioning ECU in the engine vehicle can be directly applied to that in the hybrid vehicle without a substantial hardware change. Therefore, design cost can be reduced.Type: GrantFiled: February 25, 2004Date of Patent: April 10, 2007Assignee: Denso CorporationInventors: Toshinobu Homan, Yuji Takeo, Mitsuyo Oomura
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Patent number: 7009318Abstract: In an electrical compressor having a motor and an electrical circuit integrated with a compression portion, a part of electrical components of the electrical circuit is disposed in spaces between a cylindrical outer surface of a motor housing and an imaginary flat surface that imaginarily contacts the cylindrical outer surface. Therefore, the spaces can be used effectively, and the electrical compressor can be downsized. Further, the part of the electrical components can be effectively cooled by refrigerant in the motor housing. On the other hand, the outer surface of the motor housing is used as one surface defining an inner space of a casing for accommodating the electrical circuit. In this case, the electrical circuit can be effectively cooled by refrigerant in the motor housing.Type: GrantFiled: January 27, 2003Date of Patent: March 7, 2006Assignee: Denso CorporationInventors: Kunio Iritani, Hiroyuki Kawata, Kenji Funahashi, Yuji Takeo, Yusuke Shindo, Tsuyoshi Takemoto
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Publication number: 20040168449Abstract: In a compressor control system for a vehicle air conditioner, a hybrid ECU of the vehicle controls a rotation speed of a compressor electric motor. In this case, an output circuit, which outputs a driving signal for driving the compressor electric motor, only needs to be newly provided in the hybrid ECU when a hybrid vehicle or an electric vehicle is manufactured based on an engine vehicle. Therefore, a high cost is not caused even when the output circuit is provided in the hybrid ECU which should be newly designed and manufactured. In addition, because the output circuit does not need to be provided in an air-conditioning ECU which is an existing component of the engine vehicle, the air-conditioning ECU in the engine vehicle can be directly applied to that in the hybrid vehicle without a substantial hardware change. Therefore, design cost can be reduced.Type: ApplicationFiled: February 25, 2004Publication date: September 2, 2004Inventors: Toshinobu Homan, Yuji Takeo, Mitsuyo Oomura
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Patent number: 6724985Abstract: A hot water heating apparatus for an electric vehicle and a hybrid vehicle has a compact heat source apparatus not requiring a wide space for setting. A communication pipe, in which water as a heat medium flows, and an electric heater are embedded in a heat conductor metal in proximity in a row arrangement to form a flat-shaped heat conductor. A heat source apparatus is constructed by stacking multiple flat-shaped heat conductors while the communication pipes are connected to each other in series. Further, the communication pipe and the electric heater are embedded in the heat conductor metal in proximity in a row arrangement, and the communication pipes are connected in series. Therefore, water flowing in the communication pipes is rapidly heated, and heating efficiency is extremely high.Type: GrantFiled: August 7, 2002Date of Patent: April 20, 2004Assignees: Denso Corporation, Corona CorporationInventors: Ken Matsunaga, Yuji Takeo, Kenichi Hasegawa, Susumu Kazama, Yoshihiko Adachi
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Patent number: 6713729Abstract: In a vehicle air-conditioning system, a supply of electric power to a first electric heater and a supply of electric power to a second electric heater are duty controlled at the same duty ratio in such a manner that the supply of the electric power to the second electric heater is phase shifted by one half of a period from the supply of the electric power to the first electric heater.Type: GrantFiled: March 8, 2002Date of Patent: March 30, 2004Assignee: Denso CorporationInventors: Yuji Takeo, Ken Matsunaga, Hisashi Ieda, Mitsuyo Oomura
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Patent number: 6690560Abstract: In an electrical load controller, a thermal fuse is blown at an abnormal heating of an electrical load, so that an electrical circuit of the electrical load is disconnected. The controller controls a work amount of the electrical load by intermittently controlling electrical power to be supplied thereto. The power supply to the electrical load is intermittently stopped even when the work amount of the electrical load is controlled at a maximum amount. Therefore, an arc, generated when the thermal fuse is blown, disappears while the power supply is stopped, so that the thermal fuse can be accurately operated.Type: GrantFiled: April 24, 2002Date of Patent: February 10, 2004Assignee: DENSO CorporationInventors: Ken Matsunaga, Yuji Takeo, Kyohsuke Hattori
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Patent number: 6675597Abstract: A vehicle air-conditioning system limits electric power used by an electric motor for a compressor in a prescribed fashion that quickly removes fog from the windows when a defroster mode is selected. When the defroster mode is selected, the limit on the electric power used by the electric motor is lifted, and the number of revolutions of the compressor is set to a high level to raise the dehumidifying and cooling capability to quickly remove moisture from the windows.Type: GrantFiled: May 5, 2003Date of Patent: January 13, 2004Assignee: Denso CorporationInventors: Hisashi Ieda, Toshinobu Homan, Ken Matsunaga, Yuji Takeo, Mitsuyo Oomura
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Publication number: 20030209022Abstract: A vehicle air-conditioning system limits electric power used by an electric motor for a compressor in a prescribed fashion that quickly removes fog from the windows when a defroster mode is selected. When the defroster mode is selected, the limit on the electric power used by the electric motor is lifted, and the number of revolutions of the compressor is set to a high level to raise the dehumidifying and cooling capability to quickly remove moisture from the windows.Type: ApplicationFiled: May 5, 2003Publication date: November 13, 2003Inventors: Hisashi Ieda, Toshinobu Homan, Ken Matsunaga, Yuji Takeo, Mitsuyo Oomura
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Publication number: 20030143090Abstract: In an electrical compressor having a motor and an electrical circuit integrated with a compression portion, a part of electrical components of the electrical circuit is disposed in spaces between a cylindrical outer surface of a motor housing and an imaginary flat surface that imaginarily contacts the cylindrical outer surface. Therefore, the spaces can be used effectively, and the electrical compressor can be downsized. Further, the part of the electrical components can be effectively cooled by refrigerant in the motor housing. On the other hand, the outer surface of the motor housing is used as one surface defining an inner space of a casing for accommodating the electrical circuit. In this case, the electrical circuit can be effectively cooled by refrigerant in the motor housing.Type: ApplicationFiled: January 27, 2003Publication date: July 31, 2003Inventors: Kunio Iritani, Hiroyuki Kawata, Kenji Funahashi, Yuji Takeo, Yusuke Shindo, Tsuyoshi Takemoto
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Publication number: 20030029926Abstract: A hot water heating apparatus for an electric vehicle and a hybrid vehicle has a compact heat source apparatus not requiring a wide space for setting. A communication pipe, in which water as a heat medium flows, and an electric heater are embedded in a heat conductor metal in proximity in a row arrangement to form a flat-shaped heat conductor. A heat source apparatus is constructed by stacking multiple flat-shaped heat conductors while the communication pipes are connected to each other in series. Further, the communication pipe and the electric heater are embedded in the heat conductor metal in proximity in a row arrangement, and the communication pipes are connected in series. Therefore, water flowing in the communication pipes is rapidly heated, and heating efficiency is extremely high.Type: ApplicationFiled: August 7, 2002Publication date: February 13, 2003Inventors: Ken Matsunaga, Yuji Takeo, Kenichi Hasegawa, Susumu Kazama, Yoshihiko Adachi
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Patent number: 6516621Abstract: In a hybrid vehicle including an engine and an electric motor both for running the vehicle, an air conditioner includes a compressor driven by the engine, and an engine controller controls the operation of the engine based on a condition of the air conditioner and a condition of the vehicle except the air conditioner. While the air conditioner performs a defrosting control for a windshield, the engine controller drives the engine irrespective of the condition of the vehicle except the air conditioner. On the other hand, when the defrosting control is not performed, the operation of the engine is controlled in accordance with the condition of the vehicle, for example.Type: GrantFiled: January 15, 2002Date of Patent: February 11, 2003Assignee: Denso CorporationInventors: Toshinobu Homan, Yuji Takeo, Mitsuyo Oomura, Hiroki Nakamura, Tadashi Nakagawa
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Patent number: 6515448Abstract: In an air conditioner for a hybrid vehicle, when a residual charging degree of a battery becomes equal to or lower than a target degree, the electrical motor generator is driven by a vehicle engine so that the battery is charged through the electrical motor generator. When the engine is driven, the target degree of the battery is set higher than that when the engine is stopped so that a charging operation tends to be required while the engines driven. Accordingly, the frequency for starting the engine only for charging the battery is reduced.Type: GrantFiled: December 27, 2001Date of Patent: February 4, 2003Assignee: Denso CorporationInventors: Kunio Iritani, Keita Honda, Hisashi Ieda, Ken Matsunaga, Toshinobu Homan, Mitsuyo Oomura, Yuji Takeo
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Publication number: 20020167227Abstract: In an electrical load controller, a thermal fuse is blown at an abnormal heating of an electrical load, so that an electrical circuit of the electrical load is disconnected. The controller controls a work amount of the electrical load by intermittently controlling electrical power to be supplied thereto. The power supply to the electrical load is intermittently stopped even when the work amount of the electrical load is controlled at a maximum amount. Therefore, an arc, generated when the thermal fuse is blown, disappears while the power supply is stopped, so that the thermal fuse can be accurately operated.Type: ApplicationFiled: April 24, 2002Publication date: November 14, 2002Inventors: Ken Matsunaga, Yuji Takeo, Kyohsuke Hattori
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Patent number: 6470697Abstract: When an after-evaporation temperature TE remains below the wet-bulb temperature Twet, the compressor 231 is intermittently operated for a predetermined time after the elapse of a first time To from compressor 231 stopping. On the other hand, when the after-evaporation temperature TE is higher than the wet-bulb temperature Twet, the intermittent operation mode stops. This reduces dispersion of offensive smells from the evaporator.Type: GrantFiled: August 3, 2001Date of Patent: October 29, 2002Assignee: Denso CorporationInventors: Hiroki Nakamura, Hiroshi Nonoyama, Yoshimitsu Inoue, Yuji Takeo, Mitsuyo Oomura, Eiji Takahashi, Toshinobu Homan, Osamu Kasebe
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Publication number: 20020125859Abstract: In a vehicle air-conditioning system, a supply of electric power to a first electric heater and a supply of electric power to a second electric heater are duty controlled at the same duty ratio in such a manner that the supply of the electric power to the second electric heater is phase shifted by one half of a period from the supply of the electric power to the first electric heater.Type: ApplicationFiled: March 8, 2002Publication date: September 12, 2002Inventors: Yuji Takeo, Ken Matsunaga, Hisashi Ieda, Mitsuyo Oomura
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Publication number: 20020104324Abstract: In a hybrid vehicle including an engine and an electric motor both for running the vehicle, an air conditioner includes a compressor driven by the engine, and an engine controller controls the operation of the engine based on a condition of the air conditioner and a condition of the vehicle except the air conditioner. While the air conditioner performs a defrosting control for a windshield, the engine controller drives the engine irrespective of the condition of the vehicle except the air conditioner. On the other hand, when the defrosting control is not performed, the operation of the engine is controlled in accordance with the condition of the vehicle, for example.Type: ApplicationFiled: January 15, 2002Publication date: August 8, 2002Inventors: Toshinobu Homan, Yuji Takeo, Mitsuyo Oomura, Hiroki Nakamura, Tadashi Nakagawa
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Publication number: 20020084769Abstract: In an air conditioner for a hybrid vehicle, when a residual charging degree of a battery becomes equal to or lower than a target degree, the electrical motor generator is driven by a vehicle engine so that the battery is charged through the electrical motor generator. When the engine is driven, the target degree of the battery is set higher than that when the engine is stopped so that a charging operation tends to be required while the engine is driven. Accordingly, the frequency for starting the engine only for charging the battery is reduced.Type: ApplicationFiled: December 27, 2001Publication date: July 4, 2002Inventors: Kunio Iritani, Keita Honda, Hisashi Ieda, Ken Matsunaga, Toshinobu Homan, Mitsuyo Oomura, Yuji Takeo
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Publication number: 20010049943Abstract: When an after-evaporation temperature TE remains below the wet-bulb temperature Twet, the compressor 231 is intermittently operated for a predetermined time after the elapse of a first time To from compressor 231 stopping. On the other hand, when the after-evaporation temperature TE is higher than the wet-bulb temperature Twet, the intermittent operation mode stops. This reduces dispersion of offensive smells from the evaporator.Type: ApplicationFiled: August 3, 2001Publication date: December 13, 2001Inventors: Hiroki Nakamura, Hiroshi Nonoyama, Yoshimitsu Inoue, Yuji Takeo, Mitsuyo Oomura, Eiji Takahashi, Toshinobu Homan, Osamu Kasebe
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Publication number: 20010047659Abstract: When an after-evaporation temperature TE remains below the wet-bulb temperature Twet, the compressor 231 is intermittently operated for a predetermined time after the elapse of a first time To from compressor 231 stopping. On the other hand, when the after-evaporation temperature TE is higher than the wet-bulb temperature Twet, the intermittent operation mode stops. This reduces dispersion of offensive smells from the evaporator.Type: ApplicationFiled: April 27, 2001Publication date: December 6, 2001Inventors: Hiroki Nakamura, Hiroshi Nonoyama, Yoshimitsu Inoue, Yuji Takeo, Mitsuyo Oomura, Eiji Takahashi, Toshinobu Homan, Osamu Kasebe
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Publication number: 20010010261Abstract: In an air conditioner for a vehicle having an engine that is temporarily stopped when an engine power is unnecessary, when an engine operation request signal from the air conditioner is output, the engine is operated to drive a compressor so that pleasant performance of a passenger compartment can be obtained. On the other hand, when the engine operation request signal from the air conditioner is not output, a determination level whether or not the compressor operates is changed so that a stop range of the engine is enlarged, while the pleasant performance of the passenger compartment is set in a suitable range. Accordingly, the pleasant performance of the passenger compartment is improved while fuel economy performance of the engine is improved.Type: ApplicationFiled: January 22, 2001Publication date: August 2, 2001Inventors: Mitsuyo Oomura, Yuji Takeo, Eiji Takahashi