Patents by Inventor Yasushi Kobiki
Yasushi Kobiki 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: 9233606Abstract: A vehicle drive device has an outer rotor type electric motor with a rotor disposed on an outer circumferential side of a stator including a first power transmission path coupling an inside of the rotor and drive wheels; and a second power transmission path coupling an outside of the rotor and the drive wheels, the first power transmission path and the second power transmission path having different gear ratios, one power transmission path of the first power transmission path and the second power transmission path being coupled to the drive wheels to make a gear change.Type: GrantFiled: March 2, 2012Date of Patent: January 12, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoru Takahashi, Yasushi Kobiki, Isao Sato, Takeshi Miyagawa, Hiroaki Kiyokami
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Publication number: 20150011347Abstract: A vehicle drive device has an outer rotor type electric motor with a rotor disposed on an outer circumferential side of a stator, comprising: a first power transmission path coupling an inside of the rotor and drive wheels; and a second power transmission path coupling an outside of the rotor and the drive wheels, the first power transmission path and the second power transmission path having different gear ratios, one power transmission path of the first power transmission path and the second power transmission path being coupled to the drive wheels to make a gear change.Type: ApplicationFiled: March 2, 2012Publication date: January 8, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoru Takahashi, Yasushi Kobiki, Isao Sato, Takeshi Miyagawa, Hiroaki Kiyokami
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Patent number: 7891266Abstract: A gear position display device includes a transmission having a plurality of gear positions, a speed-changing control portion outputting a speed-changing instruction, a display portion displaying a gear position of the transmission, and a detection portion detecting a speed-changing state of a gear position based on the speed-changing instruction, wherein a gear position based on the speed-changing instruction from the speed-changing control portion is displayed after the detection portion confirms actual starting of speed-changing.Type: GrantFiled: March 15, 2006Date of Patent: February 22, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Motoaki Kamimura, Yasushi Kobiki, Yoshiharu Harada, Akio Murasugi
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Patent number: 7667427Abstract: Presence/absence of a failure in a feedback control system of a motor is monitored. When a failure is detected in the feedback control system, the motor is driven by switching to an open-loop control. During the open-loop control, the motor is rotated by sequentially switching the motor current supply phase without feeding back encoder count information. The position count is incremented or decremented every time the current supply phase is switched. When the position count has reached a target count, it is determined that the rotor has reached a target position, whereupon the open-loop control is finished.Type: GrantFiled: December 30, 2005Date of Patent: February 23, 2010Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Yasushi Kobiki, Yuji Inoue
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Patent number: 7608014Abstract: A deceleration control device for a vehicle including an automatic transmission capable of changing the gear ratio by a shift operation of a driver. The control device controls the load of a brake actuator or engine so that the vehicle is decelerated, when the driver performs a shift operation, under conditions that it is determined that the driver has the intention to decelerate and the automatic transmission is not downshifted.Type: GrantFiled: August 3, 2005Date of Patent: October 27, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Kobiki, Yoshiharu Harada, Motoaki Kamimura
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Patent number: 7609012Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.Type: GrantFiled: April 4, 2007Date of Patent: October 27, 2009Assignees: DENSO Corporation, Toyota Jidosha Kabushiki KaishaInventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Keijiro Ohshima, Yasushi Kobiki, Yuji Inoue
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Patent number: 7566289Abstract: A shift control ECU includes the steps of storing a position of a shift lever; starting a count-up timer when the shift lever comes to a neutral position; and recognizing a driver's request for the neutral position when a count-up timer value attains TN(1) if the stored shift lever position is a home position and when a count-up timer value attains TN(2) if the stored shift lever position is not the home position. Here, TN(1) is set to be smaller than TN(2).Type: GrantFiled: September 26, 2008Date of Patent: July 28, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuji Inoue, Yasushi Kobiki, Toshiharu Asai, Takehiro Uchida, Yasuo Shimizu
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Patent number: 7547266Abstract: A shift control ECU includes the steps of storing a position of a shift lever; starting a count-up timer when the shift lever comes to a neutral position; and recognizing a driver's request for the neutral position when a count-up timer value attains TN(1) if the stored shift lever position is a home position and when a count-up timer value attains TN(2) if the stored shift lever position is not the home position. Here, TN(1) is set to be smaller than TN(2).Type: GrantFiled: July 21, 2006Date of Patent: June 16, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuji Inoue, Yasushi Kobiki, Toshiharu Asai, Takehiro Uchida, Yasuo Shimizu
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Publication number: 20090031835Abstract: A shift control ECU includes the steps of storing a position of a shift lever; starting a count-up timer when the shift lever comes to a neutral position; and recognizing a driver's request for the neutral position when a count-up timer value attains TN(1) if the stored shift lever position is a home position and when a count-up timer value attains TN(2) if the stored shift lever position is not the home position. Here, TN(1) is set to be smaller than TN(2).Type: ApplicationFiled: September 26, 2008Publication date: February 5, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuji INOUE, Yasushi Kobiki, Toshiharu Asai, Takehiro Uchida, Yasuo Shimizu
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Publication number: 20070182353Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.Type: ApplicationFiled: April 4, 2007Publication date: August 9, 2007Applicants: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Keijiro Ohshima, Yasushi Kobiki, Yuji Inoue
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Patent number: 7221116Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.Type: GrantFiled: October 25, 2005Date of Patent: May 22, 2007Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yasuhiro Nakai, Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Keijiro Ohshima, Yasushi Kobiki, Yuji Inoue
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Patent number: 7176643Abstract: Before an amount of play in a rotation transmitting system is learned, for selecting a gear range, an overshooting control process is performed to cause the angular displacement of a motor to overshoot a target gear range position and then reverse the electric motor. The angular displacement of the motor overshoots the target get gear range position by an overshooting amount that is identical to am amount by which the electric motor is reversed. The overshooting amount is set to a maximum value of a designed amount of play in the rotation transmitting system After the amount of play is learned, for selecting a gear range, a target count is established in view of the learned amount of play and the direction in which the motor rotates, and the motor is stopped at a position where an encoder pulse count coincides with the target count without performing the overshooting control process.Type: GrantFiled: November 2, 2005Date of Patent: February 13, 2007Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Masakazu Yamada, Shigeru Kamio, Yasushi Kobiki
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Publication number: 20060258503Abstract: A shift control ECU includes the steps of storing a position of a shift lever; starting a count-up timer when the shift lever comes to a neutral position; and recognizing a driver's request for the neutral position when a count-up timer value attains TN(1) if the stored shift lever position is a home position and when a count-up timer value attains TN(2) if the stored shift lever position is not the home position. Here, TN(1) is set to be smaller than TN(2).Type: ApplicationFiled: July 21, 2006Publication date: November 16, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuji Inoue, Yasushi Kobiki, Toshiharu Asai, Takehiro Uchida, Yasuo Shimizu
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Publication number: 20060231011Abstract: A gear position display device includes a transmission having a plurality of gear positions, a speed-changing control portion outputting a speed-changing instruction, a display portion displaying a gear position of the transmission, and a detection portion detecting a speed-changing state of a gear position based on the speed-changing instruction, wherein a gear position based on the speed-changing instruction from the speed-changing control portion is displayed after the detection portion confirms actual starting of speed-changing.Type: ApplicationFiled: March 15, 2006Publication date: October 19, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motoaki Kamimura, Yasushi Kobiki, Yoshiharu Harada, Akio Murasugi
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Patent number: 7094177Abstract: A shift control ECU includes the steps of storing a position of a shift lever; starting a count-up timer when the shift lever comes to a neutral position; and recognizing a driver's request for the neutral position when a count-up timer value attains TN(1) if the stored shift lever position is a home position and when a count-up timer value attains TN(2) if the stored shift lever position is not the home position. Here, TN(1) is set to be smaller than TN(2).Type: GrantFiled: June 2, 2004Date of Patent: August 22, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuji Inoue, Yasushi Kobiki, Toshiharu Asai, Takehiro Uchida, Yasuo Shimizu
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Publication number: 20060108966Abstract: Presence/absence of a failure in a feedback control system of a motor is monitored. When a failure is detected in the feedback control system, the motor is driven by switching to an open-loop control. During the open-loop control, the motor is rotated by sequentially switching the motor current supply phase without feeding back encoder count information. The position count is incremented or decremented every time the current supply phase is switched. When the position count has reached a target count, it is determined that the rotor has reached a target position, whereupon the open-loop control is finished.Type: ApplicationFiled: December 30, 2005Publication date: May 25, 2006Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Yasushi Kobiki, Yuji Inoue
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Publication number: 20060103339Abstract: Before an amount of play in a rotation transmitting system is learned, for selecting a gear range, an overshooting control process is performed to cause the angular displacement of a motor to overshoot a target gear range position and then reverse the electric motor. The angular displacement of the motor overshoots the target get gear range position by an overshooting amount that is identical to am amount by which the electric motor is reversed. The overshooting amount is set to a maximum value of a designed amount of play in the rotation transmitting system After the amount of play is learned, for selecting a gear range, a target count is established in view of the learned amount of play and the direction in which the motor rotates, and the motor is stopped at a position where an encoder pulse count coincides with the target count without performing the overshooting control process.Type: ApplicationFiled: November 2, 2005Publication date: May 18, 2006Applicants: Denso Corporation, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Yamada, Shigeru Kamio, Yasushi Kobiki
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Publication number: 20060058937Abstract: If oil temperature is equal to or higher than a predetermined temperature and if accelerator opening change rate is equal to or higher than a predetermined change rate upon detection of a downshift instruction, an ECT-ECU sets modes corresponding to conditions for determination period calculation processings, hydraulic-pressure temporal change rate calculation processings, and torque adjustment amount calculation processings, respectively. By performing downshift on the basis of a determination period, a hydraulic-pressure temporal change rate, and a torque adjustment amount corresponding to a set mode, the ECT-ECU improves gear-shift responsive characteristics and restrains the occurrence of a gear-shift shock.Type: ApplicationFiled: November 8, 2005Publication date: March 16, 2006Inventors: Noritaka Takebayashi, Yoji Takanami, Yasushi Kobiki, Masahiko Ando
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Publication number: 20060033464Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.Type: ApplicationFiled: October 25, 2005Publication date: February 16, 2006Applicants: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yasuhiro Nakai, Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Keijiro Ohshima, Yasushi Kobiki, Yuji Inoue
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Patent number: 6915681Abstract: An ECT-ECU includes a circuit that calculates an oil temperature threshold on the basis of a signal input from one of an engine coolant temperature sensor, an engine intake air temperature sensor, and an AT hydraulic fluid temperature sensor if a signal for starting an engine of a vehicle is input thereto from an ignition switch, a circuit that detects an oil temperature on the basis of a signal input from the AT hydraulic fluid temperature sensor at intervals of a predetermined sampling time while the vehicle is running, and a circuit that controls an automatic transmission to prohibit a gear shift from fourth speed to fifth speed if a detected oil temperature is lower than the oil temperature threshold.Type: GrantFiled: March 27, 2003Date of Patent: July 12, 2005Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., LTDInventors: Masato Kaigawa, Yasushi Kobiki, Noritaka Takebayashi, Masahiko Ando, Takeshi Gotou