Patents by Inventor Mitsuhiro Iwadare

Mitsuhiro Iwadare 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: 10221805
    Abstract: A controller for an internal combustion engine includes a detector and a processor. The detector detects a combustion condition of a gas in a cylinder of the internal combustion engine. The processor is configured to calculate a fuel ratio in the gas in the cylinder. The processor is configured to calculate a target combustion condition according to the fuel ratio. The processor is configured to calculate an ignition timing such that the combustion condition detected by the detector becomes equal to the target combustion condition.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: March 5, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Mitsuhiro Iwadare, Masanobu Takazawa, Haruya Kitano
  • Publication number: 20170363037
    Abstract: A controller for an internal combustion engine includes a detector and a processor. The detector detects a combustion condition of a gas in a cylinder of the internal combustion engine. The processor is configured to calculate a fuel ratio in the gas in the cylinder. The processor is configured to calculate a target combustion condition according to the fuel ratio. The processor is configured to calculate an ignition timing such that the combustion condition detected by the detector becomes equal to the target combustion condition.
    Type: Application
    Filed: May 18, 2017
    Publication date: December 21, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Mitsuhiro IWADARE, Masanobu TAKAZAWA, Haruya KITANO
  • Publication number: 20170363028
    Abstract: A controller for an internal combustion engine includes a detector and a processor. The detector detects a combustion condition of a gas in a cylinder of the internal combustion engine. The processor is configured to calculate a target combustion condition. The processor is configured to calculate an ignition timing such that the combustion condition detected by the detector becomes equal to the target combustion condition via a feedback control with a gain. The processor is configured to calculate a fuel ratio in the gas in the cylinder. The processor is configured to determine the gain so as to increase as the fuel ratio decreases.
    Type: Application
    Filed: May 26, 2017
    Publication date: December 21, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Mitsuhiro IWADARE
  • Patent number: 9322372
    Abstract: A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal Ss1 responsive to the detected cylinder internal pressure. Further, a signal processor, which carries out predetermined signal processing with respect to the first sensor signal Ss1 to thereby convert the first sensor signal Ss1 into a second sensor signal Ss2, is disposed between the cylinder internal pressure sensor and a solenoid unit, which is disposed on a proximal end side of the fuel injection valve.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: April 26, 2016
    Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Yoshihiro Kaneko, Gaku Sato, Junichi Fukuda, Mitsuhiro Iwadare, Tetsuji Furukawa, Takeshi Kumakura, Minoru Torii
  • Patent number: 9211882
    Abstract: In a drive control device in a drive system including a four joint link mechanism type continuously variable transmission having a one-way clutch (OWC) which can transmit only power from a power source to driving wheels, the drive control device is configured to limit a transmission ratio or an output of the power source when an output speed of the continuously variable transmission is lower than a threshold value. The threshold value is represented as an output speed of the continuously variable transmission at an intersection point of a line that represents an output torque where a maximum driving force is achieved and a line that represents a torque outputted when a swing angle of an input member of the OWC which converts rotational power from the power source into swing power becomes a maximum torsion angle.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 15, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuki Ichikawa, Mitsuhiro Iwadare
  • Patent number: 9050974
    Abstract: Provided are a drive system and a method for controlling the drive system which reduce a shock to a third shaft at the start of an internal combustion engine during EV driving. The drive system includes an engine, a first shaft connected to a crankshaft, a second shaft, a first clutch, a motor generator, a third shaft, a first transmission, a one-way clutch, and an ECU for controlling a gear ratio of the first transmission and the first clutch. The first transmission includes a rotating ring, a rocking portion, and a rotation radius variation mechanism. If an angular velocity of the rocking portion is higher than or equal to a rotational speed of the third shaft, the one-way clutch transmits a power in only one direction of the rocking portion to the third shaft.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: June 9, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tsunehiro Kobayashi, Mitsuhiro Iwadare, Satoshi Kodo
  • Patent number: 9045128
    Abstract: Provided is a drive system that enables a reduction in the rise time of foot axis torque even if the drive system has a one-way clutch. The drive system includes a one-way clutch between a transmission and an output shaft. When a coasting determination unit determines to perform a coasting control, a control unit executes the coasting control by reducing the engine rotation speed of an internal combustion engine or stopping the engine rotation to bring the one-way clutch into a non-transmission state, and changing the transmission gear ratio of the transmission to a transmission gear ratio smaller than the transmission gear ratio calculated by a calculation unit.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 2, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Mitsuhiro Iwadare, Satoshi Kodo, Tsunehiro Kobayashi
  • Patent number: 8977455
    Abstract: A power transmission apparatus includes a drive shaft, a driven shaft, a first transmission device, a first one-way power transmission mechanism, a second transmission device, a second one-way power transmission mechanism, and a controller. The first transmission device is to change power of the drive shaft. The first one-way power transmission mechanism is to transmit power changed by the first transmission device only in one direction to the driven shaft. The second transmission device is to change power of the driven shaft. The second one-way power transmission mechanism is to transmit power changed by the second transmission device only in one direction to the drive shaft. The controller is configured to change ratios of the first transmission device and the second transmission device. The controller is configured to make the ratio of the first transmission device larger than the ratio of the second transmission device.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 10, 2015
    Assignee: Honda Motor Co. Ltd.
    Inventors: Satoshi Kodo, Tsunehiro Kobayashi, Mitsuhiro Iwadare
  • Publication number: 20140349814
    Abstract: In a drive control device in a drive system including a four joint link mechanism type continuously variable transmission having a one-way clutch (OWC) which can transmit only power from a power source to driving wheels, the drive control device is configured to limit a transmission ratio or an output of the power source when an output speed of the continuously variable transmission is lower than a threshold value. The threshold value is represented as an output speed of the continuously variable transmission at an intersection point of a line that represents an output torque where a maximum driving force is achieved and a line that represents a torque outputted when a swing angle of an input member of the OWC which converts rotational power from the power source into swing power becomes a maximum torsion angle.
    Type: Application
    Filed: September 13, 2012
    Publication date: November 27, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuki Ichikawa, Mitsuhiro Iwadare
  • Publication number: 20140316646
    Abstract: A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal Ss1 responsive to the detected cylinder internal pressure. Further, a signal processor, which carries out predetermined signal processing with respect to the first sensor signal Ss1 to thereby convert the first sensor signal Ss1 into a second sensor signal Ss2, is disposed between the cylinder internal pressure sensor and a solenoid unit, which is disposed on a proximal end side of the fuel injection valve.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicants: Keihin Corporation, Honda Motor Co., Ltd.
    Inventors: Yoshihiro Kaneko, Gaku Sato, Junichi Fukuda, Mitsuhiro Iwadare, Tetsuji Furukawa, Takeshi Kumakura, Minoru Torii
  • Patent number: 8757306
    Abstract: There is provided a drive system for a vehicle. The system includes: an internal combustion engine (ENG); a transmission mechanism (TM) a one-way clutch (OWC); a rotated driving member (11); an electric motor (MG1) that rotates the output shaft of the internal combustion engine; an electric motor generator (MG2) that transmits the rotational power to the rotated driving member and performs regenerative operation by receiving the rotational power output from the rotated driving member; and a controller (50) configured to cut off a fuel supply to the internal combustion engine and control the electric motor to rotate the output shaft of the internal combustion engine while the electric motor generator performs the regenerative operation.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: June 24, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tsunehiro Kobayashi, Mitsuhiro Iwadare, Satoshi Kodo, Takuya Yamada, Fumiyasu Suga
  • Publication number: 20140114540
    Abstract: Provided is a drive system that enables a reduction in the rise time of foot axis torque even if the drive system has a one-way clutch. The drive system includes a one-way clutch between a transmission and an output shaft. When a coasting determination unit determines to perform a coasting control, a control unit executes the coasting control by reducing the engine rotation speed of an internal combustion engine or stopping the engine rotation to bring the one-way clutch into a non-transmission state, and changing the transmission gear ratio of the transmission to a transmission gear ratio smaller than the transmission gear ratio calculated by a calculation unit.
    Type: Application
    Filed: May 21, 2012
    Publication date: April 24, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Mitsuhiro Iwadare, Satoshi Kodo, Tsunehiro Kobayashi
  • Publication number: 20140106929
    Abstract: Provided are a drive system and a method for controlling the drive system which reduce a shock to a third shaft at the start of an internal combustion engine during EV driving. The drive system includes an engine, a first shaft connected to a crankshaft, a second shaft, a first clutch, a motor generator, a third shaft, a first transmission, a one-way clutch, and an ECU for controlling a gear ratio of the first transmission and the first clutch. The first transmission includes a rotating ring, a rocking portion, and a rotation radius variation mechanism. If an angular velocity of the rocking portion is higher than or equal to a rotational speed of the third shaft, the one-way clutch transmits a power in only one direction of the rocking portion to the third shaft.
    Type: Application
    Filed: February 23, 2012
    Publication date: April 17, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tsunehiro Kobayashi, Mitsuhiro Iwadare, Satoshi Kodo
  • Publication number: 20130048395
    Abstract: There is provided a drive system for a vehicle. The system includes: an internal combustion engine (ENG); a transmission mechanism (TM) a one-way clutch (OWC); a rotated driving member (11); an electric motor (MG1) that rotates the output shaft of the internal combustion engine; an electric motor generator (MG2) that transmits the rotational power to the rotated driving member and performs regenerative operation by receiving the rotational power output from the rotated driving member; and a controller (50) configured to cut off a fuel supply to the internal combustion engine and control the electric motor to rotate the output shaft of the internal combustion engine while the electric motor generator performs the regenerative operation.
    Type: Application
    Filed: July 3, 2012
    Publication date: February 28, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tsunehiro KOBAYASHI, Mitsuhiro IWADARE, Satoshi KODO, Takuya YAMADA, Fumiyasu SUGA
  • Publication number: 20120240695
    Abstract: A power transmission apparatus includes a drive shaft, a driven shaft, a first transmission device, a first one-way power transmission mechanism, a second transmission device, a second one-way power transmission mechanism, and a controller. The first transmission device is to change power of the drive shaft. The first one-way power transmission mechanism is to transmit power changed by the first transmission device only in one direction to the driven shaft. The second transmission device is to change power of the driven shaft. The second one-way power transmission mechanism is to transmit power changed by the second transmission device only in one direction to the drive shaft. The controller is configured to change ratios of the first transmission device and the second transmission device. The controller is configured to make the ratio of the first transmission device larger than the ratio of the second transmission device.
    Type: Application
    Filed: February 24, 2012
    Publication date: September 27, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Satoshi KODO, Tsunehiro Kobayashi, Mitsuhiro Iwadare
  • Patent number: 7398149
    Abstract: A control system for an internal combustion engine having a compressor wheel and a turbine wheel connected with the compressor wheel and rotationally driven by kinetic energy of exhaust gases from the engine, an exhaust gas flow rate changing device for changing a flow rate of exhaust gases injected to the turbine wheel, an exhaust gas recirculation passage for recirculating the exhaust gases to an intake pipe of the engine, and an exhaust gas recirculation control valve disposed in the exhaust gas recirculation passage. An exhaust pressure is detected, and a value of an intake gas parameter is obtained. A target value of the exhaust pressure and a target value of the intake pipe gas parameter are calculated. A control amount of the exhaust gas flow rate changing device and an opening control amount of the exhaust gas recirculation control valve are calculated using a model predictive control.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: July 8, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Ueno, Mitsuhiro Iwadare
  • Publication number: 20070068159
    Abstract: A control system for an internal combustion engine having a compressor wheel and a turbine wheel connected with the compressor wheel and rotationally driven by kinetic energy of exhaust gases from the engine, an exhaust gas flow rate changing device for changing a flow rate of exhaust gases injected to the turbine wheel, an exhaust gas recirculation passage for recirculating the exhaust gases to an intake pipe of the engine, and an exhaust gas recirculation control valve disposed in the exhaust gas recirculation passage. An exhaust pressure is detected, and a value of an intake gas parameter is obtained. A target value of the exhaust pressure and a target value of the intake pipe gas parameter are calculated. A control amount of the exhaust gas flow rate changing device and an opening control amount of the exhaust gas recirculation control valve are calculated using a model predictive control.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 29, 2007
    Inventors: Masaki Ueno, Mitsuhiro Iwadare