Patents by Inventor Hiroshi Katsuta

Hiroshi Katsuta 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).

  • Publication number: 20230318292
    Abstract: A server receives requests for power-on of electrical appliances provided in houses in an electricity distribution town block where an electricity distribution transformer is shared and arbitrates power-on timings of the electrical appliances provided in the houses to suppress simultaneous occurrence of an inrush current.
    Type: Application
    Filed: March 7, 2023
    Publication date: October 5, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi KATSUTA
  • Patent number: 11318927
    Abstract: A control device for a hybrid vehicle includes a driving control part configured to acquire for each driving road section from a server a value of the output parameter linked with a vehicle speed of the same extent as the scheduled vehicle speed when driving over a driving road section on a scheduled driving route to calculate for each driving road section the scheduled vehicle demanded output when driving over the driving road section or acquire from the server the scheduled vehicle demanded output for each driving road section calculated based on the value of the output parameter for each driving road section at the server to heat the catalyst device before using the output of the internal combustion engine as part of the drive power when there is the driving road section where the scheduled vehicle demanded output becomes the engine start output or more.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 3, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Publication number: 20200108821
    Abstract: A control device for a hybrid vehicle includes a driving control part configured to acquire for each driving road section from a server a value of the output parameter linked with a vehicle speed of the same extent as the scheduled vehicle speed when driving over a driving road section on a scheduled driving route to calculate for each driving road section the scheduled vehicle demanded output when driving over the driving road section or acquire from the server the scheduled vehicle demanded output for each driving road section calculated based on the value of the output parameter for each driving road section at the server to heat the catalyst device before using the output of the internal combustion engine as part of the drive power when there is the driving road section where the scheduled vehicle demanded output becomes the engine start output or more.
    Type: Application
    Filed: October 8, 2019
    Publication date: April 9, 2020
    Inventor: Hiroshi KATSUTA
  • Patent number: 10065506
    Abstract: A vehicle includes a friction brake, a regenerative brake, and an ECU. The ECU is configured to: (a) control a total braking force that is generated in the vehicle; (b) execute first brake control for controlling a braking force of the vehicle on the basis of the brake operation amount; (c) determine based on the brake operation amount whether the driver's brake operation is being carried out; (d) when the ECU determines that the driver's brake operation is not being carried out, execute second brake control for automatically controlling the braking force of the vehicle in response to a condition of the vehicle, other than the brake operation amount; and (e) when the second brake control is executed, reduce a proportion of a braking force of the regenerative brake within the total braking force as compared to when the first brake control is executed.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: September 4, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Publication number: 20170008400
    Abstract: A vehicle includes a friction brake, a regenerative brake, and an ECU. The ECU is configured to: (a) control a total braking force that is generated in the vehicle; (b) execute first brake control for controlling a braking force of the vehicle on the basis of the brake operation amount; (c) determine based on the brake operation amount whether the driver's brake operation is being carried out; (d) when the ECU determines that the driver's brake operation is not being carried out, execute second brake control for automatically controlling the braking force of the vehicle in response to a condition of the vehicle, other than the brake operation amount; and (e) when the second brake control is executed, reduce a proportion of a braking force of the regenerative brake within the total braking force as compared to when the first brake control is executed.
    Type: Application
    Filed: January 12, 2015
    Publication date: January 12, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi KATSUTA
  • Patent number: 9482129
    Abstract: In a vehicle including an engine, an electrically heatable catalyst device (EHC), and a first motor generator that generates electric power in accordance with the engine's motive power with the vehicle in a substantially stopped state with a vehicular speed lower than a threshold vehicular speed, an ECU determines, based on an amount A by which an accelerator pedal is operated and a vehicular speed V, whether a large accelerator operation has been performed with the vehicle in the substantially stopped state. If the ECU determines that the large accelerator operation has been performed with the vehicle in the substantially stopped state, the ECU activates an energization timer, and before the energization timer reaches a reference energization period of time ?, the ECU energizes the EHC, and once the energization timer has reached the reference energization period of time ?, the ECU ceases energizing the EHC.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: November 1, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Katsuta
  • Patent number: 9469293
    Abstract: In a vehicle capable of performing regenerative braking by a motor, when regenerative power is supplied to both of a battery and an electric heating catalyst device (EHC), and it is predicted that the battery is overcharged at the time of turning-off of EHC (a supply of power to the EHC is stopped), ECU temporarily delays turning-off of EHC. ECU determines whether or not a condition for turning off the EHC is met during the EHC turning-off delay. When the condition for turning off the EHC is met, the regenerative brake torque is lowered so that the regenerative power becomes less than the battery acceptable power, and the hydraulic brake torque is increased depending on lowering of the regenerative brake torque, and thereafter the EHC turning-off delay is cancelled.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: October 18, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Patent number: 9109489
    Abstract: In a vehicle including an EHC containing a catalyst base material and an insulator insulating the EHC from the outside, an ECU estimates a temperature of the catalyst base material and a temperature of the insulator immediately after a state of the vehicle is switched from a Ready-OFF state to a Ready-ON state, as a base material temperature for determination THcpost and an insulator temperature for determination THipost, respectively. Then, when base material temperature for determination THcpost is lower than a base material threshold temperature THcth and when insulator temperature for determination THipost is lower than an insulator threshold temperature THith, the ECU allows EHC power feed, and otherwise it does not allow but prohibits EHC power feed.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: August 18, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Publication number: 20150057857
    Abstract: In a vehicle capable of performing regenerative braking by a motor, when regenerative power is supplied to both of a battery and an electric heating catalyst device (EHC), and it is predicted that the battery is overcharged at the time of turning-off of EHC (a supply of power to the EHC is stopped), ECU temporarily delays turning-off of EHC. ECU determines whether or not a condition for turning off the EHC is met during the EHC turning-off delay. When the condition for turning off the EHC is met, the regenerative brake torque is lowered so that the regenerative power becomes less than the battery acceptable power, and the hydraulic brake torque is increased depending on lowering of the regenerative brake torque, and thereafter the EHC turning-off delay is cancelled.
    Type: Application
    Filed: November 24, 2011
    Publication date: February 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Patent number: 8875487
    Abstract: An exhaust purifying system includes: a catalytic device supplied with electric power from a power supply unit; a first connecting unit connecting one end of the catalytic device to a negative electrode node of the power supply unit; a second connecting unit connecting the other end of the catalytic device to a positive electrode node of the power supply unit; a leak detecting unit detecting leak from the power supply unit; and a control unit controlling opening and closing of each of the first and second connecting units. When leak is not detected by the leak detecting unit in a leak check state where one of the first and second connecting units is closed and the other is opened, the control unit closes the other and applies current through the catalytic device, and when leak is detected in the leak check state, the control unit does not apply the current through the catalytic device.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 4, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Katsuta
  • Publication number: 20140290216
    Abstract: In a vehicle including an engine, an electrically heatable catalyst device (EHC), and a first motor generator that generates electric power in accordance with the engine's motive power with the vehicle in a substantially stopped state with a vehicular speed lower than a threshold vehicular speed, an ECU determines, based on an amount A by which an accelerator pedal is operated and a vehicular speed V, whether a large accelerator operation has been performed with the vehicle in the substantially stopped state. If the ECU determines that the large accelerator operation has been performed with the vehicle in the substantially stopped state, the ECU activates an energization timer, and before the energization timer reaches a reference energization period of time ?, the ECU energizes the EHC, and once the energization timer has reached the reference energization period of time ?, the ECU ceases energizing the EHC.
    Type: Application
    Filed: June 2, 2011
    Publication date: October 2, 2014
    Inventor: Hiroshi Katsuta
  • Publication number: 20140174059
    Abstract: In a vehicle including an EHC containing a catalyst base material and an insulator insulating the EHC from the outside, an ECU estimates a temperature of the catalyst base material and a temperature of the insulator immediately after a state of the vehicle is switched from a Ready-OFF state to a Ready-ON state, as a base material temperature for determination THcpost and an insulator temperature for determination THipost, respectively. Then, when base material temperature for determination THcpost is lower than a base material threshold temperature THcth and when insulator temperature for determination THipost is lower than an insulator threshold temperature THith, the ECU allows EHC power feed, and otherwise it does not allow but prohibits EHC power feed.
    Type: Application
    Filed: September 1, 2011
    Publication date: June 26, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Publication number: 20130008148
    Abstract: An exhaust purifying system for a hybrid vehicle includes: a catalytic device (140) supplied with electric power from a power supply unit and heated; a first connecting unit (SW1) connecting one end of the catalytic device to a negative electrode node (GL1) of the power supply unit; a second connecting unit (SW2) connecting the other end of the catalytic device to a positive electrode node (PL1) of the power supply unit; a leak detecting unit (80) detecting leak from the power supply unit; and a control unit (150) controlling opening and closing of each of the first connecting unit and the second connecting unit. When leak is not detected by the leak detecting unit in a leak check state where one of the first connecting unit and the second connecting unit is closed and the other is opened, the control unit closes the other and applies current through the catalytic device, and when leak is detected in the leak check state, the control unit does not apply the current through the catalytic device.
    Type: Application
    Filed: February 16, 2011
    Publication date: January 10, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Katsuta
  • Patent number: 8272991
    Abstract: In a hybrid vehicle, in order to stop an engine while a clutch is kept engaged and to transmit power from a motor to a drive shaft by changing a change speed state of a transmission when the power from a second motor is being transmitted to the drive shaft by the transmission, for example, a rotation speed of the first motor is adjusted so that the first motor can be connected to the drive shaft with the clutch disengaged while torque commands for both motors are set so that the power based on torque demand is outputted to the drive shaft, the power is transferred from the second motor to the first motor while both motors are connected to the drive shaft by the transmission, and the connection between the second motor and the drive shaft by the transmission is disconnected.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: September 25, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hidehiro Oba
  • Patent number: 8251165
    Abstract: When a predetermined change speed state shift condition is satisfied while the transmission connects a carrier with a drive shaft, a hybrid vehicle performs a rotational speed adjustment process of conforming a rotational speed of a motor to a target rotational speed based on a gear ratio of the transmission and a rotational speed of the drive shaft, a connection a sun gear with the drive shaft by a gear train of the transmission corresponding to a target speed, a power transfer process of transferring power between the motors in a simultaneous engagement state to make the motors output power required in a post-change speed state corresponding to a target speed, and a disconnection the carrier from the drive shaft.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: August 28, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hidehiro Oba
  • Patent number: 8231491
    Abstract: A hybrid vehicle includes an engine, motors configured to input and output power, a power distribution integration mechanism, and a transmission. The power distribution integration mechanism has a sun gear connected with one of the motors, a carrier connected with the other motor, and a ring gear connected with the engine. The transmission includes a first speed change mechanism and a second speed change mechanism. The first speed change mechanism has a first speed gear train and a third speed gear train arranged to connect the carrier of the power distribution integration mechanism with a driveshaft. The second speed change mechanism has a parallel shaft-type gear train that is not used alone to set the speed ratio.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: July 31, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidehiro Oba, Hiroshi Katsuta
  • Patent number: 8215426
    Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by means of a transmission, a hybrid vehicle specifies one of the motors as a main motor of preferentially outputting power. Torque commands of the motors are then set to make the motor specified as the main motor preferentially output the power over the other motor specified as an auxiliary motor and to ensure output of a torque equivalent to a torque demand to the driveshaft.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: July 10, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hidehiro Oba
  • Patent number: 8210296
    Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by use of a transmission, a hybrid vehicle sets torque commands of the motors to substantially equalize an output torque of the second motor with an output torque of the first motor and to ensure output of a torque equivalent to a preset torque demand to the driveshaft. This arrangement ensures continuous output of a relatively large torque.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 3, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hidehiro Oba
  • Patent number: 8122983
    Abstract: There is provided a hybrid vehicle which stops an engine in a state in which a drive source element connection by a clutch is released; a transmission is used to couple only one of the motors to a drive shaft; and one of the motors is caused to output power; at this time, in order to start the engine, a rotation speed of the other one of the motors which does not correspond to a current speed ratio and is not connected to the drive shaft is adjusted so as to enable the drive source element connection; and the clutch is connected as well as the engine is cranked by one of the motors.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: February 28, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hidehiro Oba
  • Patent number: 8100207
    Abstract: The hybrid vehicle transfers power between the two motors, releases a coupling between one of the motors and the drive shaft, adjusts the rotation speed of one of the motors which is released from the coupling to the drive shaft by the transmission so as to enable drive source element connection, and connects the clutch as well as cranks the engine by either one or the other motor when the engine is started while the clutch is released, the engine is stopped, both the motors are coupled to the drive shaft as well as at least one of the motors is caused to output power.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: January 24, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidehiro Oba, Hiroshi Katsuta