Patents by Inventor Toshio Tanba

Toshio Tanba 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: 9267573
    Abstract: This manual transmission includes a connection changeover mechanism which changes the state of connection between the output shafts of the motor generator and the transmission in accordance with a gear stage established by a driver's shift lever operation. When a gear stage for low speed travel is established, a power transmission system is established between the output shafts of the motor generator and the transmission, and the motor speed reduction ratio is set to a first speed reduction ratio. When a gear stage for intermediate speed travel is established, a power transmission system is established between the output shafts of the motor generator and the transmission, and the motor speed reduction ratio is set to a second speed reduction ratio. When a gear stage for high speed travel is established, no power transmission system is established between the output shafts.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: February 23, 2016
    Assignee: Aisin AI Co., Ltd.
    Inventors: Shinya Osuka, Yuki Masui, Toshio Tanba
  • Patent number: 8874289
    Abstract: An apparatus, applied to a vehicle having an internal combustion engine and an electric motor as power sources, comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a changeover condition is satisfied, a period is provided in which a sum Ts of an internal-combustion-engine-side-output-torque Te and an electric-motor-side-output-torque Tm coincides with a required driving torque Tr, and an electric motor torque continues to be zero.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: October 28, 2014
    Assignee: Aisin AI Co., Ltd.
    Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi, Hiroki Hatori
  • Patent number: 8771135
    Abstract: [Subject] In a hybrid drive power apparatus, loss of drive power caused by drag torque of a friction clutch is decreased to reduce fuel consumption rate.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: July 8, 2014
    Assignees: Aisin AI Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Mitsuhiro Tabata, Masahiro Omura
  • Patent number: 8771143
    Abstract: In a hybrid power system, when a change-speed stage selected in one of gear-shift mechanisms for first and second drive trains is switched over to another change-speed stage in the other gear-shift mechanism, deceleration in rotation speed of an engine detected by a rotation speed sensor is compared with a preset upper limit. When the deceleration in rotation speed of the engine exceeds the upper limit, the motor-generator in drive connection with an input shaft of the second drive train is activated as an electric motor to cause load torque canceling or offsetting input torque applied to the input shaft of the other gear-shift mechanism from the engine, and engagement of the change-speed stage in the other gear-shift mechanism is released after the occurrence of the load torque.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: July 8, 2014
    Assignees: Aisin AI Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Sachio Toyora, Masahiro Omura
  • Publication number: 20140007721
    Abstract: This manual transmission includes a connection changeover mechanism which changes the state of connection between the output shaft Am of a motor and the output shaft Ao of a transmission in accordance with a gear stage established by a driver's shift lever operation. When a gear stage for low speed travel is established, a power transmission system is established between the shafts Ao and Am, and the motor speed reduction ratio is set to a first speed reduction ratio. When a gear stage for intermediate speed travel is established, a power transmission system is established between the shafts Ao and Am, and the motor speed reduction ratio is set to a second speed reduction ratio. When a gear stage for high speed travel is established, no power transmission system is established between the shafts Ao and Am.
    Type: Application
    Filed: May 16, 2012
    Publication date: January 9, 2014
    Applicant: AISIN AI CO., LTD.
    Inventors: Shinya Osuka, Yuki Masui, Toshio Tanba
  • Patent number: 8545365
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an (first, second) IN-connection area is more enlarged and the OUT-Connection area and the neutral connection area are more narrowed, as a temperature of a lubricating oil is lower.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: October 1, 2013
    Assignee: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Patent number: 8480535
    Abstract: A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: July 9, 2013
    Assignee: Aisin Ai Co., Ltd.
    Inventors: Toshio Tanba, Kan Sasaki, Yousuke Hayashi, Yuichi Fukuhara
  • Patent number: 8388496
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, a neutral area is enlarged so that a possibility of selecting the neutral state becomes higher, as a battery temperature is higher, or as an electric motor temperature is higher, or as a remaining battery level is larger.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: March 5, 2013
    Assignee: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Patent number: 8352139
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a kick-down-condition is satisfied, a changeover operation for changing an electric motor connection state to the OUT-Connection State is firstly performed. Thereafter, a gear position shifting operation for increasing a transmission reduction ratio is performed. After the kick-down-condition satisfied, an E/G side output torque Te and a M/G side output torque Tm is adjusted in such a manner that a sum Ts of Te and Tm continues to increase.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: January 8, 2013
    Assignee: Aisin AI Co., Ltd.
    Inventors: Hiroki Hatori, Takeshige Miyazaki, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Patent number: 8303464
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of states including, “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an IN-connection area, in which an electric-motor-driving-wheels-maximum-torque is larger than in an OUT-Connection State and in a neutral connection area, is enlarged.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: November 6, 2012
    Assignee: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Patent number: 8210985
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of states including, “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination of a vehicle speed V and a required driving torque T. When the vehicle starts to drive, “the IN-Connection State” is selected. After the start of the vehicle and while the vehicle speed V is increasing, the changeovers to “the OUT-Connection State”, “the IN-Connection State”, and “the neutral state” are sequentially carried out.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 3, 2012
    Assignee: Aisin AI Co., Ltd.
    Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi
  • Publication number: 20110185847
    Abstract: [Subject] In a hybrid drive power apparatus, distortional oscillation of power transfer shafts caused by fluctuation in output torque of an engine is restrained to prevent the occurrence of unpleasant noises such as hitting noise of gear teeth, harsh noise in the vehicle body and the like.
    Type: Application
    Filed: April 3, 2009
    Publication date: August 4, 2011
    Applicants: AISIN AI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KASIHA
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Koji Murakami, Masahiro Omura
  • Publication number: 20110179905
    Abstract: In a hybrid power system, when a change-speed stage selected in one of gear-shift mechanisms for first and second drive trains is switched over to another change-speed stage in the other gear-shift mechanism, deceleration in rotation speed of an engine detected by a rotation speed sensor is compared with a preset upper limit. When the deceleration in rotation speed of the engine exceeds the upper limit, the motor-generator in drive connection with an input shaft of the second drive train is activated as an electric motor to cause load torque canceling or offsetting input torque applied to the input shaft of the other gear-shift mechanism from the engine, and engagement of the change-speed stage in the other gear-shift mechanism is released after the occurrence of the load torque.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 28, 2011
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Sachio Toyora, Masahiro Omura
  • Publication number: 20110174557
    Abstract: [Subject]To rapidly rise a temperature of lubricant in a transmission housing of a hybrid drive power apparatus when the lubricant temperature is lower than a preset lower limit value.
    Type: Application
    Filed: April 17, 2009
    Publication date: July 21, 2011
    Applicants: AISIN AI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Hiroshi Sato, Masahiro Omura
  • Publication number: 20110174558
    Abstract: [Subject] In a hybrid drive power apparatus, loss of drive power caused by drag torque of a friction clutch is decreased to reduce fuel consumption rate.
    Type: Application
    Filed: April 17, 2009
    Publication date: July 21, 2011
    Applicant: Aisin AI Co.,Ltd.
    Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Mitsuhiro Tabata, Masahiro Omura
  • Publication number: 20100262324
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a kick-down-condition is satisfied, a changeover operation for changing an electric motor connection state to the OUT-Connection State is firstly performed. Thereafter, a gear position shifting operation for increasing a transmission reduction ratio is performed. After the kick-down-condition satisfied, an E/G side output torque Te and a M/G side output torque Tm is adjusted in such a manner that a sum Ts of Te and Tm continues to increase.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Applicant: Aisin Al Co., Ltd.
    Inventors: Hiroki HATORI, Takeshige Miyazaki, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Publication number: 20100262323
    Abstract: An apparatus, applied to a vehicle having an internal combustion engine and an electric motor as power sources, comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a changeover condition is satisfied, a period is provided in which a sum Ts of an internal-combustion-engine-side-output-torque Te and an electric-motor-side-output-torque Tm coincides with a required driving torque Tr, and an electric motor torque continues to be zero.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Applicant: Aisin Al Co., Ltd.
    Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi, Hiroki Hatori
  • Publication number: 20100234173
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of states including, “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an IN-connection area, in which an electric-motor-driving-wheels-maximum-torque is larger than in an OUT-Connection State and in a neutral connection area, is enlarged.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Applicant: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Publication number: 20100234169
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an (first, second) IN-connection area is more enlarged and the OUT-Connection area and the neutral connection area are more narrowed, as a temperature of a lubricating oil is lower.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Applicant: Aisin AI Co., Ltd.
    Inventors: Takeshige MIYAZAKI, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
  • Publication number: 20100234174
    Abstract: An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, a neutral area is enlarged so that a possibility of selecting the neutral state becomes higher, as a battery temperature is higher, or as an electric motor temperature is higher, or as a remaining battery level is larger.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Applicant: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi