Patents by Inventor Hiroki Murata
Hiroki Murata 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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Publication number: 20120228874Abstract: An electrically driven vehicle equipped with a battery usable for running in which a power generation unit of engine driven type that charges the battery is detachably mounted on a vehicle body, includes including a first connection part that brings a high-voltage system in which the battery and the power generation unit are electrically connected together into a connected state in a state in which the power generation unit is mounted in a mounting position and brings the high-voltage system into a disconnected state in a state in which the power generation unit is dismounted from the mounting position, whereby the first connection part switches a connection state of the high-voltage system in accordance with installation or removal of the power generation unit. The first connection part includes a connector on the vehicle side and a connector on the power generation unit side.Type: ApplicationFiled: November 12, 2009Publication date: September 13, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Nobuhisa Jingu, Shintaro Utsumi, Satoko Tofukuji, Kazuhito Sakai, Hirotsugu Ojima, Atsunori Kumagai, Hiroki Murata, Takanobu Arai
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Publication number: 20120222034Abstract: A method and system to acquire checkpoints in making iteration-method computer calculations in parallel and to effectively utilize the acquired data for recovery. At the time of acquiring a checkpoint in parallel calculation that repeats an iteration method, each node independently acquires the checkpoint in parallel with the calculation without stopping the calculation. Thereby, it is possible to perform both of the calculation and the checkpoint acquisition in parallel. In the case where the calculation does not impose an I/O bottleneck, checkpoint acquisition time is overlapped, and execution time is reduced. In this method, checkpoint data including values at different points of time during the acquisition process is acquired. By limiting the use purpose to iteration-method convergence calculations, mixture of the values at the different points of time in the checkpoint data is accepted in the problem that a convergence destination does not depend on an initial value.Type: ApplicationFiled: February 15, 2012Publication date: August 30, 2012Applicant: International Business Machines CorporationInventors: Tatsuya Ishikawa, Hiroki Murata, Yasushi Negishi
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Patent number: 8220443Abstract: An EGR system includes a high-pressure EGR unit and a low-pressure EGR unit. During the steady operation of an internal combustion engine, the high-pressure EGR gas and the low-pressure EGR gas are mixed with each other at a mixture ratio, in which the ratio of the high-pressure EGR gas amount to the entire EGR gas amount is higher than that in a known mixture ratio, and then recirculated back to the internal combustion engine. In the engine speed-up transitional operation period, the opening amount of a high-pressure EGR valve is adjusted to the opening amount that is much smaller than the target opening amount corresponding to the target operation mode. Thus, it is possible to suppress occurrence of the situation where the entire EGR gas amount is excessive in the period in which the low-pressure EGR gas amount does not decrease by a sufficient amount.Type: GrantFiled: January 10, 2008Date of Patent: July 17, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Murata, Masahiro Nagae, Hajime Shimizu, Shigeki Nakayama, Tomomi Onishi
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Publication number: 20120166030Abstract: In an electrically driven vehicle equipped with a battery usable for running, a power generation unit of engine driven type that charges the battery is detachably mounted on the vehicle including a case where at least an engine of the power generation unit is detachably mounted, and the vehicle includes first stop means for bringing the power generation unit in a stopped state when the power generation unit is installed in or removed from the vehicle, and a generation stop switch for making an operation request to the power generation unit. More specifically, the first stop means stops an operation request signal to the power generation unit through low-voltage system wires when the generation stop switch is ON (no operation request is made).Type: ApplicationFiled: September 4, 2009Publication date: June 28, 2012Applicant: Toyota Jidosha Kabushiki KaishaInventors: Shintaro Utsumi, Satoko Tofukuji, Atsunori Kumagai, Nobuhisa Jingu, Hirotsugu Ojima, Kazuhito Sakai, Hiroki Murata, Takanobu Arai
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Patent number: 8196404Abstract: An exhaust gas recirculation system includes a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; a low-pressure EGR valve; and an EGR control unit that adjusts the opening amount of the high-pressure EGR valve to a required value for achieving the target EGR rate based on the characteristics of the exhaust gas in the low-pressure EGR passage before the operation mode is changed, and that maintains the required value during a period from when the operation mode is changed until when the low-pressure EGR gas is changed to the exhaust gas discharged from the internal combustion engine in the post-change operation mode.Type: GrantFiled: November 6, 2007Date of Patent: June 12, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomomi Onishi, Shigeki Nakayama, Teruhiko Miyake, Masahiro Nagae, Hajime Shimizu, Isao Matsumoto, Tomoyuki Ono, Hiroki Murata, Akira Yamashita, Hiroyuki Haga
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Publication number: 20110276206Abstract: An electric drive vehicle includes a vehicle main body 10, a battery 12, a power generating unit 11 that charges to the battery 12, an operating condition setting switch 40 capable of setting an operating condition of the power generating unit 11, a power-generating-unit side ECU 113 that operates the power generating unit 11 on the basis of the operating condition, a navigation system 30 that acquires a vehicle traveling condition, and a vehicle-side ECU 50 that estimates the amount of charge consumed in the battery 12 during traveling under the vehicle traveling condition. The vehicle-side ECU 50 turns on an alarm lump 46 when an estimated time necessary for charging the battery to make up the amount of charge estimated is longer than a desired time it takes to charge the battery to make up the amount of charge estimated.Type: ApplicationFiled: March 18, 2010Publication date: November 10, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoko Tofukuji, Atsunori Kumagai, Hiroki Murata
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Patent number: 8051659Abstract: A control apparatus for an internal combustion engine includes an exhaust gas recirculation unit; an intercooler that is provided in the intake passage, at a position downstream of a position to which the exhaust gas is recirculated back; a bypass passage through which an intake air flow bypasses the intercooler. When it is determined that the pH of the condensed water obtained from the exhaust gas is at the level at which the intercooler corrodes in the state where the exhaust gas is recirculated back by the exhaust gas recirculation unit, the control apparatus executes a control for cutting off an intake air flow toward the intercooler to direct the intake air flow only to the bypass passage. Thus, it is possible to ensure reliability of the intercooler.Type: GrantFiled: February 5, 2008Date of Patent: November 8, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Akira Yamashita, Isao Matsumoto, Naofumi Magarida, Hiroki Murata, Hiroyuki Haga, Takenori Saoda
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Patent number: 8001953Abstract: In an exhaust gas recirculation system for an internal combustion engine, which includes a turbocharger; a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; and a low-pressure EGR valve, first, the opening amount of the high-pressure EGR valve is controlled in a feedback manner, and, then, the opening amount of a low-pressure EGR valve is controlled in a feedback manner in a transitional operation period in which the operation mode of the internal combustion engine is changing. In this way, the intake air amount is promptly adjusted to the target intake air amount without causing hunting.Type: GrantFiled: January 11, 2008Date of Patent: August 23, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Murata, Masahiro Nagae, Hajime Shimizu, Shigeki Nakayama, Tomomi Onishi
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Publication number: 20100316408Abstract: Process cartridges are driven by respectively corresponding DC brushless motors. In a cleaning sequence executed after image formation ends, the DC brushless motors operate according to the driving parameters such that acoustic operational noise decreases.Type: ApplicationFiled: May 20, 2010Publication date: December 16, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hiroki Murata, Toshifumi Kitamura
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Publication number: 20100126142Abstract: In a control method of an internal combustion engine exhaust gas control system which is applied to a hybrid vehicle that is powered by an internal combustion engine and an electric motor, an exhaust throttle valve, provided downstream of an exhaust gas control catalyst, is controlled to reduce its opening amount to a target opening amount when it is determined that warm-up control of the internal combustion engine needs to be executed. Next, a target injection quantity of fuel necessary to increase the temperature of exhaust gas flowing into the internal combustion engine to a target exhaust gas temperature is calculated. Then, assist torque from the electric motor is adjusted so that the sum of torque from the internal combustion engine when the fuel injection quantity has been set to the target injection quantity and the assist torque substantially equals a required torque.Type: ApplicationFiled: June 5, 2008Publication date: May 27, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Murata, Isao Matsumoto, Naofumi Magarida, Akira Yamashita, Hiroyuki Haga, Takenori Saoda
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Patent number: 7717099Abstract: An exhaust gas recirculation device includes a turbocharger (5) having a turbine (5b) on an exhaust pipe (4) and a compressor (5a) on an intake pipe (3), a low-pressure EGR passage (31) connecting the exhaust pipe (4) downstream of the turbine (5b) and the intake pipe (3) upstream of the compressor (5a), and a filter (13) provided on the exhaust pipe (4) downstream of the turbine (5b). In the device, an exhaust throttle valve (19) is disposed on the exhaust pipe (4) that is downstream of the filter (13) and that is upstream of a site of connection with the low-pressure EGR passage (31).Type: GrantFiled: June 27, 2007Date of Patent: May 18, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahiro Nagae, Hajime Shimizu, Hiroki Murata
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Publication number: 20100121508Abstract: A hybrid system control apparatus is provided in which an intercooler (15) is disposed upstream of the motor cooling radiator (70) in a flow path of the ambient air flowing in an engine compartment, and/or is disposed such that at least a portion of the intercooler and a portion of the motor cooling radiator contact each other. The hybrid system control apparatus includes a warm-up portion (60) that increases temperature of the boost air by controlling a load of the engine in cold start of a hybrid system (1) such that the boost pressure from the forced air induction device is equal to or higher than a target boost pressure.Type: ApplicationFiled: October 2, 2008Publication date: May 13, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Murata, Isao Matsumoto, Naofumi Magarida, Akira Yamashita, Hiroyuki Haga, Takenori Saoda
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Publication number: 20100050999Abstract: In an exhaust gas recirculation system for an internal combustion engine, which includes a turbocharger; a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; and a low-pressure EGR valve, first, the opening amount of the high-pressure EGR valve is controlled in a feedback manner, and, then, the opening amount of a low-pressure EGR valve is controlled in a feedback manner in a transitional operation period in which the operation mode of the internal combustion engine is changing. In this way, the intake air amount is promptly adjusted to the target intake air amount without causing hunting.Type: ApplicationFiled: January 11, 2008Publication date: March 4, 2010Applicant: Toyota Jidosha Kaabushiki KaishaInventors: Hiroki Murata, Masahiro Nagae, Hajime Shimizu, Shigeki Nakayama, Tomomi Onishi
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Publication number: 20100018187Abstract: An internal combustion engine control device includes a NOx adsorber catalyst disposed in an exhaust passage, an EGR passage, a reducing agent adding device, a torque fluctuation reducing device, and a fuel injection device. The EGR passage draws a portion of exhaust gas from the exhaust passage downstream of the NOx adsorber catalyst and recirculates the exhaust gas into the intake passage. The reducing agent adding device adds a reducing agent to exhaust gas upstream of the NOx adsorber catalyst to reduce substances adsorbed by the NOx adsorber catalyst. When or after the reducing agent adding device adds the reducing agent, the torque fluctuation reducing device advances the timing of the fuel injection device or carries out a pilot injection to reduce a fluctuation in engine torque. The reducing agent adding device adds less reducing agent while the torque fluctuation reducing device is operating.Type: ApplicationFiled: April 4, 2008Publication date: January 28, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Isao Matsumoto, Takenori Saoda, Naofumi Magarida, Hiroki Murata, Akira Yamashita, Hiroyuki Haga
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Publication number: 20090308071Abstract: A control apparatus for an internal combustion engine includes an exhaust gas recirculation unit; an intercooler that is provided in the intake passage, at a position downstream of a position to which the exhaust gas is recirculated back; a bypass passage through which an intake air flow bypasses the intercooler. When it is determined that the pH of the condensed water obtained from the exhaust gas is at the level at which the intercooler corrodes in the state where the exhaust gas is recirculated back by the exhaust gas recirculation unit, the control apparatus executes a control for cutting off an intake air flow toward the intercooler to direct the intake air flow only to the bypass passage. Thus, it is possible to ensure reliability of the intercooler.Type: ApplicationFiled: February 5, 2008Publication date: December 17, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akira Yamashita, Isao Matsumoto, Naofumi Magarida, Hiroki Murata, Hiroyuki Haga, Takenori Saoda
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Publication number: 20090283077Abstract: An EGR system includes a high-pressure EGR unit and a low-pressure EGR unit. During the steady operation of an internal combustion engine, the high-pressure EGR gas and the low-pressure EGR gas are mixed with each other at a mixture ratio, in which the ratio of the high-pressure EGR gas amount to the entire EGR gas amount is higher than that in a known mixture ratio, and then recirculated back to the internal combustion engine. In the engine speed-up transitional operation period, the opening amount of a high-pressure EGR valve is adjusted to the opening amount that is much smaller than the target opening amount corresponding to the target operation mode. Thus, it is possible to suppress occurrence of the situation where the entire EGR gas amount is excessive in the period in which the low-pressure EGR gas amount does not decrease by a sufficient amount.Type: ApplicationFiled: January 10, 2008Publication date: November 19, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Murata, Masahiro Nagae, Hajime Shimizu, Shigeki Nakayama, Tomomi Onishi
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Publication number: 20090223221Abstract: An exhaust gas recirculation system includes a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; a low-pressure EGR valve; and an EGR control unit that adjusts the opening amount of the high-pressure EGR valve to a required value for achieving the target EGR rate based on the characteristics of the exhaust gas in the low-pressure EGR passage before the operation mode is changed, and that maintains the required value during a period from when the operation mode is changed until when the low-pressure EGR gas is changed to the exhaust gas discharged from the internal combustion engine in the post-change operation mode.Type: ApplicationFiled: November 6, 2007Publication date: September 10, 2009Inventors: Tomomi Onishi, Shigeki Nakayama, Teruhiko Miyake, Masahiro Nagae, Hajime Shimizu, Isao Matsumoto, Tomoyuki Ono, Hiroki Murata, Akira Yamashita, Hiroyuki Haga
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Patent number: 7579749Abstract: A power supply device generates an output voltage by driving a piezoelectric transformer using a frequency signal. The power supply device includes a comparison unit configured to compare an output voltage and a voltage setting signal that sets the output voltage, and a voltage control oscillation unit configured to generate the frequency signal to drive the piezoelectric transformer based on comparison results of the comparison unit. The voltage control oscillation unit generates the frequency signal within a range between the resonant frequency and a spurious resonant frequency closest to the resonant frequency.Type: GrantFiled: July 6, 2006Date of Patent: August 25, 2009Assignee: Canon Kabushiki KaishaInventors: Hiroki Murata, Teruhiko Namiki, Osamu Nagasaki, Atsuhiko Yamaguchi, Tomohiro Nakamori, Takehiro Uchiyama, Kouji Yasukawa
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Publication number: 20090194079Abstract: An exhaust gas recirculation device includes a turbocharger (5) having a turbine (5b) on an exhaust pipe (4) and a compressor (5a) on an intake pipe (3), a low-pressure EGR passage (31) connecting the exhaust pipe (4) downstream of the turbine (5b) and the intake pipe (3) upstream of the compressor (5a), and a filter (13) provided on the exhaust pipe (4) downstream of the turbine (5b). In the device, an exhaust throttle valve (19) is disposed on the exhaust pipe (4) that is downstream of the filter (13) and that is upstream of a site of connection with the low-pressure EGR passage (31).Type: ApplicationFiled: June 27, 2007Publication date: August 6, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masahiro Nagae, Hajime Shimizu, Hiroki Murata
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Publication number: 20090158250Abstract: Systems, methods and computer program products for operation history management for high performance computing programs optimization. Exemplary embodiments include a method including in response to saving an operation history creating a pseudo-change file that includes marks above and below an operation area in order to specify an operation object, creating a change history by storing context differences between contents of a file before an operation and the pseudo-change file, including the context differences in an operation history list, in response to applying the operation history applying the context differences to an objective operation file to acquire the pseudo-change file, determining the application area based on a position of the marks above and below the operation area from the pseudo-change file; and acquiring edited results by applying the context differences from the operation history to the objective application file.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Hirofumi Kimura, Hiroki Murata, Yasushi Negishi