Patents by Inventor Kazuhiko Imamura
Kazuhiko Imamura 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: 8755979Abstract: A safety control apparatus for an automatic transmission includes a speed range detector, an oil temperature detector, a vehicle speed detector, a speed-range shifting device, a shift inhibiting device, and a maximum-speed limiting device. The shift inhibiting device is configured to inhibit an automatic downshift and a manual downshift by a driver if the speed-range shifting device performs a forcible upshift. The maximum-speed limiting device is configured to limit a maximum vehicle speed to a third vehicle speed if an oil temperature reaches a second oil temperature which is higher than a first oil temperature and if a vehicle speed is not lower than a second vehicle speed which is higher than a first vehicle speed.Type: GrantFiled: March 7, 2013Date of Patent: June 17, 2014Assignee: Honda Motor Co., Ltd.Inventors: Yutaka Ishikawa, Nobuyuki Watanabe, Kazuhiko Imamura, Ryuichi Mori
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Patent number: 8589056Abstract: To provide a stop control system for an internal combustion engine, which is capable of accurately stopping a piston at a predetermined position while compensating for variation in the stop characteristic of the piston and aging thereof. The stop control system 1 for the engine 3 according the present invention controls a throttle valve 13a toward an open side when an engine speed NE becomes lower than a stop control start rotational speed NEIGOFTH after the engine 3 is stopped (step 42), whereby a final compression stroke rotational speed NEPRSFTGT is controlled to a predetermined reference value NENPFLMTO, to thereby control the stop position of the piston 3d to a predetermined position. Further, the correlation between the stop control start rotational speed NEIGOFTH and the final compression stroke rotational speed NEPRSFTGT is determined (step 5, FIG.Type: GrantFiled: July 30, 2010Date of Patent: November 19, 2013Assignee: Honda Motor Co., Ltd.Inventors: Tomoharu Hozumi, Hiroshi Yatani, Takeshi Aoki, Atsushi Mitsui, Masaaki Nagashima, Kazuhiko Imamura
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Publication number: 20130261913Abstract: A safety control apparatus for an automatic transmission includes a speed range detector, an oil temperature detector, a vehicle speed detector, a speed-range shifting device, a shift inhibiting device, and a maximum-speed limiting device. The shift inhibiting device is configured to inhibit an automatic downshift and a manual downshift by a driver if the speed-range shifting device performs a forcible upshift. The maximum-speed limiting device is configured to limit a maximum vehicle speed to a third vehicle speed if an oil temperature reaches a second oil temperature which is higher than a first oil temperature and if a vehicle speed is not lower than a second vehicle speed which is higher than a first vehicle speed.Type: ApplicationFiled: March 7, 2013Publication date: October 3, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Yutaka ISHIKAWA, Nobuyuki WATANABE, Kazuhiko IMAMURA, Ryuichi MORI
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Publication number: 20120217798Abstract: An electric load system and method for a vehicle includes an electric load, electric devices, an electrically driven element operating in an operating state, an electric load detector to measure an electric load generated by the electric devices, and an electric control unit communicating with the electric load detector and the electrically driven element to determine an electric load of the electric load system. The method includes estimating an electric load of the electrically driven element based on an operating state of the electrically driven element via the electric control unit and adding the electric load from the electrically driven element to an electric load measured by the electric load detector.Type: ApplicationFiled: February 28, 2011Publication date: August 30, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Paul DeHart, Takahide Mizuno, Hirokazu Toyoshima, Masanori Ohara, Joji Hijikata, Kazuhiko Imamura, Kotaro Miyashita
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Publication number: 20120130619Abstract: A stop control system for an internal combustion engine, which is capable of accurately stopping a piston at a predetermined position during stoppage of the engine while preventing occurrence of untoward noise and vibration. After stopping the engine 3, the stop control system 1 for the engine 3 according to the present invention executes a first stage control (step 34) in which a throttle valve 13a is controlled to a first stage control target opening degree ICMDOFPRE smaller than a second predetermined opening degree ICMDOF2, in order to stop the piston at the predetermined position, before executing a second stage control (step 42) in which the throttle valve 13a is controlled to the second predetermined opening degree ICMDOF2.Type: ApplicationFiled: July 30, 2010Publication date: May 24, 2012Applicant: Honda Motor Co., Ltd.Inventors: Tomoharu Hozumi, Atsushi Mitsui, Takeshi Aoki, Hiroshi Yatani, Kazuhiko Imamura
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Publication number: 20120116653Abstract: To provide a stop control system for an internal combustion engine, which is capable of accurately stopping a piston at a predetermined position while compensating for variation in the stop characteristic of the piston and aging thereof. The stop control system 1 for the engine 3 according the present invention controls a throttle valve 13a toward an open side when an engine speed NE becomes lower than a stop control start rotational speed NEIGOFTH after the engine 3 is stopped (step 42), whereby a final compression stroke rotational speed NEPRSFTGT is controlled to a predetermined reference value NENPFLMTO, to thereby control the stop position of the piston 3d to a predetermined position. Further, the correlation between the stop control start rotational speed NEIGOFTH and the final compression stroke rotational speed NEPRSFTGT is determined (step 5, FIG.Type: ApplicationFiled: July 30, 2010Publication date: May 10, 2012Applicant: Honda Motor Co., Ltd.Inventors: Tomoharu Hozumi, Hiroshi Yatani, Takeshi Aoki, Atsushi Mitsui, Masaaki Nagashima, Kazuhiko Imamura
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Publication number: 20110307158Abstract: An apparatus to control an internal combustion engine includes a cylinder operation controller configured to switch a cylinder operation between an all-cylinder operation and a cylinder deactivation operation. A deactivation time parameter integrating device is configured to integrate a deactivation time parameter indicating a deactivation time of the part of the plurality of cylinders to calculate an integrated deactivation time parameter. An inhibiting device is configured to inhibit the cylinder deactivation operation if the integrated deactivation time parameter calculated by the deactivation time parameter integrating device is larger than or equal to a reference value. The deactivation time parameter integrating device holds the integrated deactivation time parameter as an initial value after an operation of the internal combustion engine is stopped.Type: ApplicationFiled: May 9, 2011Publication date: December 15, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Kazuhiko IMAMURA, Masaaki Nagashima, Hiroshi Yatani, Tomoharu Hozumi, Nobuaki Ito, Chiharu Shimizu
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Patent number: 7705871Abstract: An image forming apparatus includes an optical writing device. The optical writing device includes an optical writing unit that emits laser light beams toward image carriers, an outer case that accommodates the optical writing unit, and air supplying devices that supply air into the outer case. The outer case includes openings through which the laser light beams pass. Another image forming apparatus includes an optical writing device that emits laser light beams toward image carriers to form latent images thereon, partition members that are interposed between the image carriers and the optical writing device and that have openings elongating along a scanning direction of the optical writing device, and shutter mechanisms including shutter members to open and close the openings. The laser light beams are emitted from the optical writing device toward the image carriers through the openings.Type: GrantFiled: September 20, 2004Date of Patent: April 27, 2010Assignee: Ricoh Company LimitedInventors: Kazuhiko Imamura, Takefumi Adachi, Masaaki Tsuda
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Patent number: 7578128Abstract: An air bypass valve failure detecting device outputs an opening command to an air bypass valve when a throttle valve suddenly closes, thereby prevent surging from occurring in a second intake passage between a turbocharger and a throttle valve. When the opening command is outputted to the air bypass valve, failure detection for the air bypass valve is permitted only if an intake air quantity of an engine immediately before a closing command is changed to the opening command is equal to or larger than a predetermined value. Thus, it is possible to prevent the failure detecting device from erroneously determining that the air bypass valve is normal although valve closing failure of the air bypass valve has occurred. This is because, when the intake air quantity is smaller than the predetermined value, surging does not occur in the second intake passage even if the valve closing failure of the airy bypass valve has occurred.Type: GrantFiled: July 20, 2007Date of Patent: August 25, 2009Assignee: Honda Motor Co., Ltd.Inventors: Atsuhiro Miyauchi, Hirofumi Hara, Kazuhiko Imamura, Yoshinori Andou
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Patent number: 7526223Abstract: A housing in which a heat source for heating a member to be heated is disposable includes a first end and a second end in a longitudinal direction. Each of the first end and the second end is linked to a duct. A blowing unit is provided at the first end of the housing and causes an airflow in a space formed in a state in which the heat source is disposed in the housing. The duct linked to the second end of the housing is formed to extend from the second end. A length of the duct linked to the second end of the housing is longer than a hydraulic diameter by a predetermined number of times or more.Type: GrantFiled: May 1, 2006Date of Patent: April 28, 2009Assignee: Ricoh Company, Ltd.Inventors: Takefumi Adachi, Kazuhiko Imamura, Masaaki Tsuda, Toshio Ishii, Makoto Ando, Yuichi Watanabe
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Patent number: 7500363Abstract: When an engine load QC is equal to or larger than a predetermined value, an acceleration-state determiner determines that a turbine is in an acceleration state, and a supercharging-pressure-control-state determiner determines that supercharging-pressure controller (a bypass valve, a wastegate, and a variable flap) of a turbocharger are in a maximum supercharging pressure control state (a closed valve state), i.e., when a delay coefficient ? of the turbocharger calculated by a delay-coefficient calculator on the basis of an actual supercharging pressure ?c and a convergent value ?c* of a supercharging pressure calculated by a convergent-value calculator indicates a value peculiar to the turbocharger, a failure of the supercharging-voltage controller is determined on the basis of the delay coefficient ?.Type: GrantFiled: July 25, 2007Date of Patent: March 10, 2009Assignee: Honda Motor Co., Ltd.Inventors: Hirofumi Hara, Atsuhiro Miyauchi, Kazuhiko Imamura, Takashi Kon, Yoshinori Andou
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Publication number: 20080022968Abstract: An air bypass valve failure detecting device outputs an opening command to an air bypass valve when a throttle valve suddenly closes, thereby prevent surging from occurring in a second intake passage between a turbocharger and a throttle valve. When the opening command is outputted to the air bypass valve, failure detection for the air bypass valve is permitted only if an intake air quantity of an engine immediately before a closing command is changed to the opening command is equal to or larger than a predetermined value. Thus, it is possible to prevent the failure detecting device from erroneously determining that the air bypass valve is normal although valve closing failure of the air bypass valve has occurred. This is because, when the intake air quantity is smaller than the predetermined value, surging does not occur in the second intake passage even if the valve closing failure of the airy bypass valve has occurred.Type: ApplicationFiled: July 20, 2007Publication date: January 31, 2008Inventors: Atsuhiro Miyauchi, Hirofumi Hara, Kazuhiko Imamura, Yoshinori Andou
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Publication number: 20080022679Abstract: When an engine load QC is equal to or larger than a predetermined value, an acceleration-state determiner determines that a turbine is in an acceleration state, and a supercharging-pressure-control-state determiner determines that supercharging-pressure controller (a bypass valve, a wastegate, and a variable flap) of a turbocharger are in a maximum supercharging pressure control state (a closed valve state), i.e., when a delay coefficient ? of the turbocharger calculated by a delay-coefficient calculator on the basis of an actual supercharging pressure ?c and a convergent value ?c* of a supercharging pressure calculated by a convergent-value calculator indicates a value peculiar to the turbocharger, a failure of the supercharging-voltage controller is determined on the basis of the delay coefficient ?.Type: ApplicationFiled: July 25, 2007Publication date: January 31, 2008Inventors: Hirofumi Hara, Atsuhiro Miyauchi, Kazuhiko Imamura, Takashi Kon, Yoshinori Andou
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Patent number: 7317885Abstract: An image forming apparatus includes a first frame plate and a second frame plate, which has an extended portion horizontally extending by a predetermined length compared with the first frame plate. The first and second frame plates are oppositely disposed spaced apart by a predetermined width from each other. An open and close unit, which includes a recording medium conveying system, is disposed within an area of the extended portion between the first and second frame plates and is configured to freely open and close with respect to the image forming apparatus. And a drive controlling mechanism is configured to control the recording medium conveying system. The extended portion supports at least a portion of the drive controlling mechanism so as to be separately mounted on a side of the image forming apparatus.Type: GrantFiled: October 20, 2005Date of Patent: January 8, 2008Assignee: Ricoh Company, Ltd.Inventors: Takefumi Adachi, Kazuhiko Imamura
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Publication number: 20060257161Abstract: A housing in which a heat source for heating a member to be heated is disposable includes a first end and a second end in a longitudinal direction. Each of the first end and the second end is linked to a duct. A blowing unit is provided at the first end of the housing and causes an airflow in a space formed in a state in which the heat source is disposed in the housing. The duct linked to the second end of the housing is formed to extend from the second end. A length of the duct linked to the second end of the housing is longer than a hydraulic diameter by a predetermined number of times or more.Type: ApplicationFiled: May 1, 2006Publication date: November 16, 2006Inventors: Takefumi Adachi, Kazuhiko Imamura, Masaaki Tsuda, Toshio Ishii, Makoto Ando, Yuichi Watanabe
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Publication number: 20060093396Abstract: An image forming apparatus includes a first frame plate and a second frame plate, which has an extended portion horizontally extending by a predetermined length compared with the first frame plate. The first and second frame plates are oppositely disposed spaced apart by a predetermined width from each other. An open and close unit, which includes a recording medium conveying system, is disposed within an area of the extended portion between the first and second frame plates and is configured to freely open and close with respect to the image forming apparatus. And a drive controlling mechanism is configured to control the recording medium conveying system. The extended portion supports at least a portion of the drive controlling mechanism so as to be separately mounted on a side of the image forming apparatus.Type: ApplicationFiled: October 20, 2005Publication date: May 4, 2006Inventors: Takefumi Adachi, Kazuhiko Imamura
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Publication number: 20050089315Abstract: An image forming apparatus includes an optical writing device. The optical writing device includes an optical writing unit that emits laser light beams toward image carriers, an outer case that accommodates the optical writing unit, and air supplying devices that supply air into the outer case. The outer case includes openings through which the laser light beams pass. Another image forming apparatus includes an optical writing device that emits laser light beams toward image carriers to form latent images thereon, partition members that are interposed between the image carriers and the optical writing device and that have openings elongating along a scanning direction of the optical writing device, and shutter mechanisms including shutter members to open and close the openings. The laser light beams are emitted from the optical writing device toward the image carriers through the openings.Type: ApplicationFiled: September 20, 2004Publication date: April 28, 2005Inventors: Kazuhiko Imamura, Takefumi Adachi, Masaaki Tsuda
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Patent number: 6880534Abstract: An evaporative fuel processing system for processing evaporative fuel generated a fuel tank. A canister temporarily stores evaporative fuel generated in the fuel tank. A charge passage connects the fuel tank and the canister. A first purge passage connects the canister and an intake pipe of an internal combustion engine having a turbocharger. A purge control valve is provided in the first purge passage for adjusting a flow rate of gases flowing through the first purge passage. A second purge passage connects a downstream side of the purge control valve of the first purge passage and an upstream side of the turbocharger of the intake pipe. A jet pump is mounted on the second purge passage. A pressurized air supply passage supplies air pressurized by the turbocharger to the jet pump. The jet pump includes a nozzle for discharging the pressurized air supplied through the pressurized air supply passage.Type: GrantFiled: June 21, 2004Date of Patent: April 19, 2005Assignee: Honda Motor Co., Ltd.Inventors: Koichi Yoshiki, Kazuhiko Imamura, Ryuji Kohno, Mahito Shikama, Toshiichi Terakado, Kenichi Maeda, Masayuki Wakui
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Publication number: 20050011498Abstract: An evaporative fuel processing system for processing evaporative fuel generated a fuel tank. A canister temporarily stores evaporative fuel generated in the fuel tank. A charge passage connects the fuel tank and the canister. A first purge passage connects the canister and an intake pipe of an internal combustion engine having a turbocharger. A purge control valve is provided in the first purge passage for adjusting a flow rate of gases flowing through the first purge passage. A second purge passage connects a downstream side of the purge control valve of the first purge passage and an upstream side of the turbocharger of the intake pipe. A jet pump is mounted on the second purge passage. A pressurized air supply passage supplies air pressurized by the turbocharger to the jet pump. The jet pump includes a nozzle for discharging the pressurized air supplied through the pressurized air supply passage.Type: ApplicationFiled: June 21, 2004Publication date: January 20, 2005Inventors: Koichi Yoshiki, Kazuhiko Imamura, Ryuji Kohno, Mahito Shikama, Toshiichi Terakado, Kenichi Maeda, Masayuki Wakui
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Patent number: 6650559Abstract: A radiation container where a noise filter unit is sealed and accommodated with a resinous insulation material having a thermal conductive characteristic nearly equal to that of the radiation container, and a driving unit are directly installed on a radiating fin, whereby heat generated by the noise filter unit is efficiently dissipated on the radiating fin, and a necessary insulation characteristic is obtained.Type: GrantFiled: October 19, 2001Date of Patent: November 18, 2003Assignee: Fuji Electric Co., Ltd.Inventors: Kenji Okamoto, Kazuhiko Imamura