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).

  • Patent number: 8755979
    Abstract: 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: Grant
    Filed: March 7, 2013
    Date of Patent: June 17, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Ishikawa, Nobuyuki Watanabe, Kazuhiko Imamura, Ryuichi Mori
  • Patent number: 8589056
    Abstract: 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: Grant
    Filed: July 30, 2010
    Date of Patent: November 19, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tomoharu Hozumi, Hiroshi Yatani, Takeshi Aoki, Atsushi Mitsui, Masaaki Nagashima, Kazuhiko Imamura
  • Publication number: 20130261913
    Abstract: 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: Application
    Filed: March 7, 2013
    Publication date: October 3, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yutaka ISHIKAWA, Nobuyuki WATANABE, Kazuhiko IMAMURA, Ryuichi MORI
  • Publication number: 20120217798
    Abstract: 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: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Paul DeHart, Takahide Mizuno, Hirokazu Toyoshima, Masanori Ohara, Joji Hijikata, Kazuhiko Imamura, Kotaro Miyashita
  • Publication number: 20120130619
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: May 24, 2012
    Applicant: Honda Motor Co., Ltd.
    Inventors: Tomoharu Hozumi, Atsushi Mitsui, Takeshi Aoki, Hiroshi Yatani, Kazuhiko Imamura
  • Publication number: 20120116653
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: May 10, 2012
    Applicant: Honda Motor Co., Ltd.
    Inventors: Tomoharu Hozumi, Hiroshi Yatani, Takeshi Aoki, Atsushi Mitsui, Masaaki Nagashima, Kazuhiko Imamura
  • Publication number: 20110307158
    Abstract: 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: Application
    Filed: May 9, 2011
    Publication date: December 15, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiko IMAMURA, Masaaki Nagashima, Hiroshi Yatani, Tomoharu Hozumi, Nobuaki Ito, Chiharu Shimizu
  • Patent number: 7705871
    Abstract: 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: Grant
    Filed: September 20, 2004
    Date of Patent: April 27, 2010
    Assignee: Ricoh Company Limited
    Inventors: Kazuhiko Imamura, Takefumi Adachi, Masaaki Tsuda
  • Patent number: 7578128
    Abstract: 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: Grant
    Filed: July 20, 2007
    Date of Patent: August 25, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsuhiro Miyauchi, Hirofumi Hara, Kazuhiko Imamura, Yoshinori Andou
  • Patent number: 7526223
    Abstract: 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: Grant
    Filed: May 1, 2006
    Date of Patent: April 28, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Takefumi Adachi, Kazuhiko Imamura, Masaaki Tsuda, Toshio Ishii, Makoto Ando, Yuichi Watanabe
  • Patent number: 7500363
    Abstract: 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: Grant
    Filed: July 25, 2007
    Date of Patent: March 10, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hirofumi Hara, Atsuhiro Miyauchi, Kazuhiko Imamura, Takashi Kon, Yoshinori Andou
  • Publication number: 20080022968
    Abstract: 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: Application
    Filed: July 20, 2007
    Publication date: January 31, 2008
    Inventors: Atsuhiro Miyauchi, Hirofumi Hara, Kazuhiko Imamura, Yoshinori Andou
  • Publication number: 20080022679
    Abstract: 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: Application
    Filed: July 25, 2007
    Publication date: January 31, 2008
    Inventors: Hirofumi Hara, Atsuhiro Miyauchi, Kazuhiko Imamura, Takashi Kon, Yoshinori Andou
  • Patent number: 7317885
    Abstract: 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: Grant
    Filed: October 20, 2005
    Date of Patent: January 8, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Takefumi Adachi, Kazuhiko Imamura
  • Publication number: 20060257161
    Abstract: 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: Application
    Filed: May 1, 2006
    Publication date: November 16, 2006
    Inventors: Takefumi Adachi, Kazuhiko Imamura, Masaaki Tsuda, Toshio Ishii, Makoto Ando, Yuichi Watanabe
  • Publication number: 20060093396
    Abstract: 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: Application
    Filed: October 20, 2005
    Publication date: May 4, 2006
    Inventors: Takefumi Adachi, Kazuhiko Imamura
  • Publication number: 20050089315
    Abstract: 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: Application
    Filed: September 20, 2004
    Publication date: April 28, 2005
    Inventors: Kazuhiko Imamura, Takefumi Adachi, Masaaki Tsuda
  • Patent number: 6880534
    Abstract: 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: Grant
    Filed: June 21, 2004
    Date of Patent: April 19, 2005
    Assignee: Honda Motor Co., Ltd.
    Inventors: Koichi Yoshiki, Kazuhiko Imamura, Ryuji Kohno, Mahito Shikama, Toshiichi Terakado, Kenichi Maeda, Masayuki Wakui
  • Publication number: 20050011498
    Abstract: 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: Application
    Filed: June 21, 2004
    Publication date: January 20, 2005
    Inventors: Koichi Yoshiki, Kazuhiko Imamura, Ryuji Kohno, Mahito Shikama, Toshiichi Terakado, Kenichi Maeda, Masayuki Wakui
  • Patent number: 6650559
    Abstract: 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: Grant
    Filed: October 19, 2001
    Date of Patent: November 18, 2003
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Kenji Okamoto, Kazuhiko Imamura