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).
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Patent number: 9267573Abstract: 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: GrantFiled: May 16, 2012Date of Patent: February 23, 2016Assignee: Aisin AI Co., Ltd.Inventors: Shinya Osuka, Yuki Masui, Toshio Tanba
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Patent number: 8874289Abstract: 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: GrantFiled: April 6, 2010Date of Patent: October 28, 2014Assignee: Aisin AI Co., Ltd.Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi, Hiroki Hatori
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Patent number: 8771135Abstract: [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: GrantFiled: April 17, 2009Date of Patent: July 8, 2014Assignees: Aisin AI Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Mitsuhiro Tabata, Masahiro Omura
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Patent number: 8771143Abstract: 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: GrantFiled: March 30, 2009Date of Patent: July 8, 2014Assignees: Aisin AI Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Sachio Toyora, Masahiro Omura
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Publication number: 20140007721Abstract: 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: ApplicationFiled: May 16, 2012Publication date: January 9, 2014Applicant: AISIN AI CO., LTD.Inventors: Shinya Osuka, Yuki Masui, Toshio Tanba
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Patent number: 8545365Abstract: 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: GrantFiled: March 10, 2010Date of Patent: October 1, 2013Assignee: Aisin AI Co., Ltd.Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Patent number: 8480535Abstract: 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: GrantFiled: February 3, 2010Date of Patent: July 9, 2013Assignee: Aisin Ai Co., Ltd.Inventors: Toshio Tanba, Kan Sasaki, Yousuke Hayashi, Yuichi Fukuhara
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Patent number: 8388496Abstract: 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: GrantFiled: March 10, 2010Date of Patent: March 5, 2013Assignee: Aisin AI Co., Ltd.Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Patent number: 8352139Abstract: 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: GrantFiled: April 6, 2010Date of Patent: January 8, 2013Assignee: Aisin AI Co., Ltd.Inventors: Hiroki Hatori, Takeshige Miyazaki, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Patent number: 8303464Abstract: 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: GrantFiled: March 10, 2010Date of Patent: November 6, 2012Assignee: Aisin AI Co., Ltd.Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Patent number: 8210985Abstract: 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: GrantFiled: March 10, 2010Date of Patent: July 3, 2012Assignee: Aisin AI Co., Ltd.Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi
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Publication number: 20110185847Abstract: [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: ApplicationFiled: April 3, 2009Publication date: August 4, 2011Applicants: AISIN AI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KASIHAInventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Koji Murakami, Masahiro Omura
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Publication number: 20110179905Abstract: 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: ApplicationFiled: March 30, 2009Publication date: July 28, 2011Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Sachio Toyora, Masahiro Omura
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Publication number: 20110174557Abstract: [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: ApplicationFiled: April 17, 2009Publication date: July 21, 2011Applicants: AISIN AI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Hiroshi Sato, Masahiro Omura
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Publication number: 20110174558Abstract: [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: ApplicationFiled: April 17, 2009Publication date: July 21, 2011Applicant: Aisin AI Co.,Ltd.Inventors: Toshio Tanba, Yuichi Fukuhara, Kan Sasaki, Mitsuhiro Tabata, Masahiro Omura
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Publication number: 20100262324Abstract: 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: ApplicationFiled: April 6, 2010Publication date: October 14, 2010Applicant: Aisin Al Co., Ltd.Inventors: Hiroki HATORI, Takeshige Miyazaki, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Publication number: 20100262323Abstract: 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: ApplicationFiled: April 6, 2010Publication date: October 14, 2010Applicant: Aisin Al Co., Ltd.Inventors: Toshio Tanba, Kan Sasaki, Takeshige Miyazaki, Yousuke Hayashi, Hiroki Hatori
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Publication number: 20100234173Abstract: 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: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Applicant: Aisin AI Co., Ltd.Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Publication number: 20100234169Abstract: 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: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Applicant: Aisin AI Co., Ltd.Inventors: Takeshige MIYAZAKI, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi
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Publication number: 20100234174Abstract: 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: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Applicant: Aisin AI Co., Ltd.Inventors: Takeshige Miyazaki, Hiroki Hatori, Kan Sasaki, Toshio Tanba, Yousuke Hayashi