Patents by Inventor Koji Miwa
Koji Miwa 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: 8528388Abstract: An engine control system includes an engine that outputs a rotation of a crankshaft through a torsional damper; a calculation portion that calculates a value of engine torque based on an angular acceleration of the crankshaft and a moment of inertia of the crankshaft; and a correction portion that calculates a correction value based on a torsional angle of the torsional damper, and corrects the calculated value of the engine torque using the correction value.Type: GrantFiled: January 15, 2009Date of Patent: September 10, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, IncInventors: Kentaro Yutani, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa
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Publication number: 20130017926Abstract: A cranking torque control apparatus (100) is mounted on a hybrid vehicle (1) provided with: an engine (11); a motor (MG1) coupled with the engine and capable of cranking the engine; and a battery (21) capable of supplying electric power to the motor. The cranking torque control apparatus is provided with: a correcting device (22) for estimating a fluctuation amount of power consumption caused by a rotational fluctuation of the engine when the motor cranks the engine and for correcting an upper limit of outputtable electric power of the battery in accordance with the estimated fluctuation amount.Type: ApplicationFiled: May 18, 2011Publication date: January 17, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Miwa, Takashi Kawai
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Publication number: 20120296503Abstract: A cranking torque control apparatus (100) is mounted on a hybrid vehicle provided with: an engine (11), a motor (MG1) coupled with the engine and capable of cranking the engine, and a battery (21) capable of supplying an electric power to the motor. The cranking torque control apparatus is provided with: a setting device (22) capable of setting an output limit value which is a limit value for the electric power outputted from the battery in accordance with an electric power deviation when the motor cranks the engine; and a controlling device (22) for controlling said setting device not to set the output limit value under a condition that a voltage of the battery falls below a lower limit voltage associated with the battery due to resonance of the engine or due to a first fire of the engine.Type: ApplicationFiled: May 18, 2011Publication date: November 22, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Miwa, Takashi Kawai
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Publication number: 20120210506Abstract: A flush tank device (10) includes a tank body (20) storing flush water to flush a toilet body (1), a water supply device (30) supplying flush water into the tank body, and an air suction device (40) sucking air in a toilet drain duct (3).Type: ApplicationFiled: November 4, 2010Publication date: August 23, 2012Applicant: LIXIL CORPORATIONInventors: Koji Miwa, Kojiro Watari, Hitomi Yamai, Ken Higuchi
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Patent number: 8122984Abstract: A vehicle includes: an engine driven with gasoline; a lid member opening/closing an opening of an accommodation room that accommodates a nozzle receiving unit when gasoline is supplied; a rotating electric machine driven on electric power; a charging/power feeding unit receiving electric power; a lid member opening/closing an opening of an accommodation room accommodating a charging/power feeding unit; and an open/close control mechanism setting the other of the lid member and the lid member in the closed position when one of the lid member and the lid member is set in the open position.Type: GrantFiled: August 8, 2008Date of Patent: February 28, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Miwa, Shigeki Kinomura, Makoto Hirai, Yoshiaki Atsumi
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Publication number: 20110299882Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.Type: ApplicationFiled: May 25, 2011Publication date: December 8, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Ryuji Tanaami, Keita Nakajima, Koji Miwa, Yuji Mitsui
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Publication number: 20110299873Abstract: The image forming apparatus having LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out along the LED unit in the retracted position.Type: ApplicationFiled: June 2, 2011Publication date: December 8, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hidehiro Ushiozu, Yuji Mitsui, Keita Nakajima, Koji Miwa
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Publication number: 20110196545Abstract: An ECU operates a charging unit such that a power storage device is charged by an electric power from a power supply. When a vehicle moves while charging the unit charges the power storage device, the ECU stops charging the unit to discontinue the charging of the power storage device. The ECU diagnoses a state of the charging unit after the charging of the power storage device is stopped. The ECU determines whether the charging of the power storage device is able to be resumed based on the diagnostic result. When determining that the charging of the power storage device is able to be resumed, the ECU resumes the charging of the power storage device by resuming the operation of the charging unit.Type: ApplicationFiled: May 28, 2009Publication date: August 11, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Koji Miwa
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Publication number: 20100133024Abstract: A vehicle includes: an engine driven with gasoline; a lid member opening/closing an opening of an accommodation room that accommodates a nozzle receiving unit when gasoline is supplied; a rotating electric machine driven on electric power; a charging/power feeding unit receiving electric power; a lid member opening/closing an opening of an accommodation room accommodating a charging/power feeding unit; and an open/close control mechanism setting the other of the lid member and the lid member in the closed position when one of the lid member and the lid member is set in the open position.Type: ApplicationFiled: August 8, 2008Publication date: June 3, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Koji Miwa, Shigeki Kinomura, Makoto Hirai, Yoshiaki Atsumi
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Patent number: 7726270Abstract: When cranking is started, a control unit of an ECU determines an advance amount by which an intake valve closing timing is advanced from a fully retarded position toward a bottom dead center, and transmits the determined advance amount to a variable valve timing mechanism. After cranking is started, the control unit determines that there is an abnormality in the variable valve timing mechanism, when the advance amount is larger than 0, and when an actual intake valve closing timing, determined using an intake cam angle from a cam angle sensor and a crank angle from a crank angle sensor, is not advanced from the fully retarded position. When it is determined that there is an abnormality in the variable valve timing mechanism, the control unit outputs a control signal to an inverter to increase an output torque of a motor, which is a driving source for cranking.Type: GrantFiled: January 14, 2009Date of Patent: June 1, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Miwa, Yoshiaki Atsumi, Hiroshi Kanai, Hajime Ando
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Publication number: 20090306841Abstract: A vehicle (100) includes: a battery (B1, B2); a motor generator (MG2) driven by electric power stored in the battery (B1); a coupling unit (41) for electrically coupling the battery (B1, B2) to an external commercial power supply (55); and a controller (60) for operating an electrical component (43) and performing failure diagnosis of the electrical component (43) in a case where the vehicle and the external power supply can be electrically coupled by operating the coupling unit (41). As a result, there can be provided a vehicle that can be charged from outside and allows early detection of a failure without reducing a distance that can be traveled, and a method for failure diagnosis of the vehicle.Type: ApplicationFiled: May 15, 2008Publication date: December 10, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Miwa, Yoshiaki Atsumi, Koichi Osawa, Shigeki Kinomura
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Publication number: 20090229897Abstract: An engine control system includes an engine that outputs a rotation of a crankshaft through a torsional damper; a calculation portion that calculates a value of engine torque based on an angular acceleration of the crankshaft and a moment of inertia of the crankshaft; and a correction portion that calculates a correction value based on a torsional angle of the torsional damper, and corrects the calculated value of the engine torque using the correction value.Type: ApplicationFiled: January 15, 2009Publication date: September 17, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC.Inventors: Kentaro YUTANI, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa
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Publication number: 20090183706Abstract: When cranking is started, a control unit of an ECU determines an advance amount by which an intake valve closing timing is advanced from a fully retarded position toward a bottom dead center, and transmits the determined advance amount to a variable valve timing mechanism. After cranking is started, the control unit determines that there is an abnormality in the variable valve timing mechanism, when the advance amount is larger than 0, and when an actual intake valve closing timing, determined using an intake cam angle from a cam angle sensor and a crank angle from a crank angle sensor, is not advanced from the fully retarded position. When it is determined that there is an abnormality in the variable valve timing mechanism, the control unit outputs a control signal to an inverter to increase an output torque of a motor, which is a driving source for cranking.Type: ApplicationFiled: January 14, 2009Publication date: July 23, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Miwa, Yoshiaki Atsumi, Hiroshi Kanai, Hajime Ando
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Patent number: 7404289Abstract: An engine ECU executes a program including the steps of: if it is necessary to take an anti catalytic odor approach and the engine should be warmed up, resetting an engine warm up request flag to cut fuel for the approach; cutting the fuel and determining whether the approach has completed; and if so, setting the flag.Type: GrantFiled: March 10, 2006Date of Patent: July 29, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Miwa, Ikuo Ando, Ryuta Teraya
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Patent number: 7392550Abstract: A muffling apparatus capable of attaining the prevention of the occurrence of a noise reliably while making concrete the reduction of the manufacturing cost and the easiness of the assembling of the same apparatus, and a feed water apparatus having such a muffling effect are provided. The muffling apparatus 2 is an apparatus connected to a jet pipe 1 adapted to send out the water, which flows in a feed water passage 1a in the interior thereof, into storage water W.Type: GrantFiled: August 15, 2003Date of Patent: July 1, 2008Assignee: Inax CorporationInventors: Koji Miwa, Kenichi Ito
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Patent number: 7367324Abstract: A fuel feed apparatus is provided to a fuel tank. The fuel feed apparatus includes a lid member, a canister, and a fuel pump. The lid member covers a through hole of the fuel tank. The canister connects with the lid member. The canister is accommodated in the fuel tank for removably absorbing fuel vapor in the fuel tank. The canister has a cross section, which is in a substantially semicircle shape. The canister has an outer peripheral wall that partially defines a remaining space on the lateral side of the canister. The fuel pump is received in the remaining space on the lateral side of the canister in the fuel tank for pumping fuel in the fuel tank.Type: GrantFiled: April 21, 2006Date of Patent: May 6, 2008Assignee: Denso CorporationInventors: Kouji Izutani, Keiichi Yamashita, Noriya Matsumoto, Koji Miwa
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Patent number: D542188Type: GrantFiled: May 22, 2006Date of Patent: May 8, 2007Assignee: Honda Motor Co., Ltd.Inventors: Koji Miwa, Takao Mikami, Manabu Ichikawa
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Patent number: D557642Type: GrantFiled: May 22, 2006Date of Patent: December 18, 2007Assignee: Honda Motor Co., Ltd.Inventors: Koji Miwa, Takao Mikami
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Patent number: D562189Type: GrantFiled: May 22, 2006Date of Patent: February 19, 2008Assignee: Honda Motor Co., Ltd.Inventors: Koji Miwa, Takao Mikami
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Patent number: D582319Type: GrantFiled: March 6, 2008Date of Patent: December 9, 2008Assignee: Honda Motor Co., Ltd.Inventors: Koji Miwa, Masato Nagata, Bruno Conte, Ramon Meneses