Patents by Inventor Mitsuo Kayano
Mitsuo Kayano 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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Publication number: 20030183030Abstract: The object of the present invention is to dissolve the shock originated from engaging and disengaging of the clutch during acceleration, when using a mesh type transmission provided with a clutch for engaging and disengaging the shift gear and the output shaft.Type: ApplicationFiled: April 22, 2003Publication date: October 2, 2003Applicant: Hitachi, Ltd.Inventors: Mitsuo Kayano, Ryaouichi Naganuma, Toshimichi Minowa, Hiroshi Ohnishi, Takashi Okada, Tatsuya Ochi, Hiroshi Sakamoto
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Patent number: 6619152Abstract: The present invention provides an apparatus and a method for controlling an automatic transmission of a motor vehicle having an engine and an automatic transmission including a clutch with an actuator for changing gear position comprising a detecting means for detecting a completion of the gear change and a signal generating means for generating a control signal to the actuator for applying continued pressure to the clutch for a predetermined time after the detection means detects the completion of the gear change.Type: GrantFiled: September 19, 2001Date of Patent: September 16, 2003Assignee: Hitachi, Ltd.Inventors: Tatsuya Ochi, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Hiroshi Sakamoto
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Publication number: 20030171186Abstract: A method and system for controlling creep in an automatic transmission, comprising a first creep torque control means which, upon generation of an accelerator- and brake-pedal undepressed state in a running mode, generates a target creep speed, the target creep speed increasing as a function of time and settling to a predetermined value, the first creep torque control means then calculating a creep torque from the target creep speed, detecting a change in vehicle load from a speed deviation, correcting a target creep torque on the basis of the detected change in vehicle load, and controlling the engine torque on the basis of the correction, and a second creep torque control means which controls a transfer torque of a starting clutch (a first friction clutch) on the basis of a slipping speed of the starting clutch and the target creep torque, the creep controlling method and system being able to realize a stable creep running even against a change in running environment such as the existence of a slope or an iType: ApplicationFiled: September 25, 2002Publication date: September 11, 2003Applicant: Hitachi, Ltd.Inventors: Takashi Okada, Toshimichi Minowa, Mitsuo Kayano, Tatsuya Ochi, Hiroshi Sakamoto
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Patent number: 6612203Abstract: The power transmission of the car comprises an engine, a gearbox, a rotary electric unit which transmits power through the gearbox, and a clutch which is provided between the input shaft and the output shaft of said gearbox to control the torque between the input shaft and the output shaft.Type: GrantFiled: February 19, 2002Date of Patent: September 2, 2003Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Mitsuo Kayano
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Patent number: 6612963Abstract: A generator use gear enable to rotate freely against an input shaft of a transmission mechanism for altering a rotation number of an engine and a clutch mechanisms in which the input shaft of the transmission mechanism and the generator use gear are rotated together with are provided between the engine and the transmission mechanism. Further, on an extension line of the input of the transmission mechanism and to a rear portion of the transmission mechanism, an electric motor is provided. Accordingly, a compact size power transmission system of an automobile can be attained.Type: GrantFiled: January 10, 2003Date of Patent: September 2, 2003Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Hiroshi Sakamoto, Mitsuo Kayano
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Publication number: 20030150286Abstract: A mesh-type automatic transmission comprises a power input shaft 300 for introducing power of an engine, a plurality of transmission gears 301, 303, 304, 306, 310, a plurality of cogged clutches 302, 305, 308, a power output shaft 323 for outputting driving force, a counter shaft 315, and a plurality of counter gears 314, 316, 317, 318, 322, for transmitting power of the engine to the power output shaft 323 by rotating the power input shaft 300 with the power of the engine, rotating the counter shaft 315 by rotation of the power input shaft 300, and transmitting rotation of the counter shaft 315 to the power output shaft 323 via the counter gears 314, 316, 317, 318, 322 with automatic gear change by engaging and disengaging the cogged clutches 302, 305, 308 to one of the transmission gears 301, 303, 304, 306, 310 corresponding to the speed, wherein the counter shaft 315 is provided with an assist mechanism 6 for transmitting rotational force of the power input shaft 300 to the power output shaft 323 by transmType: ApplicationFiled: December 17, 2002Publication date: August 14, 2003Inventors: Mitsuo Kayano, Toshimichi Minowa, Takashi Okada, Tatsuya Ochi, Hiroshi Sakamoto
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Publication number: 20030146028Abstract: A control device for a vehicle which has a function to reduce the change-speed shock when changing the speed by controlling the transmission of the vehicle. The control device performs the switching between a manual change-speed mode in which the vehicle speed can be changed based on a change-speed command generated by manual operation and an automatic change-speed mode in which a transmission gear ratio can be controlled based on the predetermined change-speed characteristic. Thereby the reduction amount of the change-speed shock can be changed between the manual change-speed mode and the automatic change-speed mode.Type: ApplicationFiled: March 7, 2003Publication date: August 7, 2003Applicant: Hitachi, Ltd.Inventors: Mitsuo Kayano, Toshimichi Minowa, Hiroshi Sakamoto
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Patent number: 6603214Abstract: A control device for a vehicle which has a function to reduce the change-speed shock when changing the speed by controlling the transmission of the vehicle. The control device performs the switching between a manual change-speed mode in which the vehicle speed can be changed based on a change-speed command generated by manual operation and an automatic change-speed mode in which a transmission gear ratio can be controlled based on the predetermined change-speed characteristic. Thereby the reduction amount of the change-speed shock can be changed between the manual change-speed mode and the automatic change-speed mode.Type: GrantFiled: August 7, 2000Date of Patent: August 5, 2003Assignee: Hitachi, Ltd.Inventors: Mitsuo Kayano, Toshimichi Minowa, Hiroshi Sakamoto
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Publication number: 20030139870Abstract: At the time of the change-speed, by correcting the torque reducing portion of an output shaft during the change-speed, the revolution number of an input shaft is controlled on the basis of the corrected torque reduction correcting value. Also, the torque of said input shaft is adjusted at the end of the change-speed on the basis of said torque correcting value.Type: ApplicationFiled: March 4, 2003Publication date: July 24, 2003Applicant: Hitachi, Ltd.Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
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Patent number: 6591167Abstract: An object of the present invention is to provide a control unit for vehicle where increase in number of input/output and upgrading of function can easily be performed and, in addition to this, changing of a program in a control unit can easily be performed even when a single-chip micro-computer is used. In order to cope with an increase in input/output points and addition of function, a control unit is constructed such as to comprise interface software memory means storing an interface software program for connecting an application software program with an OS (operating system) in an internal ROM, a CPU (central processing unit) for performing computation of the application software program and the interface software program, a RAM (erasable memory) storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN.Type: GrantFiled: July 6, 2000Date of Patent: July 8, 2003Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Publication number: 20030109358Abstract: An apparatus and a method of controlling a vehicle is provided for correcting a lowered value of the torque of an output shaft in the gear shifting and suppressing a revolution speed of an input shaft on the basis of the lowered torque correction. The torque of the input shaft is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.Type: ApplicationFiled: January 31, 2003Publication date: June 12, 2003Applicant: Hitachi, Ltd.Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
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Publication number: 20030104902Abstract: A generator use gear enable to rotate freely against an input shaft of a transmission mechanism for altering a rotation number of an engine and a clutch mechanisms in which the input shaft of the transmission mechanism and the generator use gear are rotated together with are provided between the engine and the transmission mechanism. Further, on an extension line of the input of the transmission mechanism and to a rear portion of the transmission mechanism, an electric motor is provided. Accordingly, a compact size power transmission system of an automobile can be attained.Type: ApplicationFiled: January 10, 2003Publication date: June 5, 2003Applicant: Hitachi, Ltd.Inventors: Toshimichi Minowa, Hiroshi Sakamoto, Mitsuo Kayano
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Patent number: 6561052Abstract: A mesh type automatic transmission is equipped with a plurality of shift gears arranged to rotate freely to an output shaft for providing driving force to the wheels. Cogged clutches 12, 15 engage with the output shaft. Counter shift gears corresponding to each speed are fixed to a counter shaft rotated by the rotation of an input shaft and mesh with the shift gears for performing automatic shifting by controlling engagement of one of the cogged clutches with the voluntary shift gears determined from the accelerator command value and the vehicle speed. An assist mechanism transmits rotational force of the input shaft to the output shaft via the assist shaft which rotates from the rotation of the counter shaft when no cogged clutch of the plurality of cogged clutches is engaged with any of the plurality of shift gears occurring during switching when an engaged cogged clutch of the plurality of cogged clutches is disengaged and one of the cogged clutch of the plurality of cogged clutches is to be engaged.Type: GrantFiled: March 6, 2001Date of Patent: May 13, 2003Assignee: Hitachi, Ltd.Inventors: Mitsuo Kayano, Ryouichi Naganuma, Toshimichi Minowa, Hiroshi Ohnishi, Takashi Okada, Tatsuya Ochi, Hiroshi Sakamoto
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Patent number: 6560521Abstract: At the time of the change-speed, by correcting the torque reducing portion of an output shaft during the change-speed, the revolution number of an input shaft is controlled on the basis of the corrected torque reduction correcting value. Also, the torque of said input shaft is adjusted at the end of the change-speed on the basis of said torque correcting value.Type: GrantFiled: August 31, 2000Date of Patent: May 6, 2003Assignee: Hitachi, Ltd.Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
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Patent number: 6550352Abstract: The deterioration of comfort is prevented by suppressing the shifting of a timing for releasing a claw clutch due to a change in the characteristic of a friction clutch or the like at the time of torque transmission switching from the claw clutch to the friction clutch during speed changing. A start timing for releasing the claw clutch is learned by determining a state of the released claw clutch. Even when a characteristic change occurs because of a change with time, such as the response delay of an assist clutch or the like, each optimal releasing control timing is learned.Type: GrantFiled: March 7, 2001Date of Patent: April 22, 2003Assignee: Hitachi, Ltd.Inventors: Takashi Okada, Toshimichi Minowa, Mitsuo Kayano, Tatsuya Ochi, Hiroshi Sakamoto, Hiroshi Kuroiwa, Naoyuki Ozaki, Tetsuo Matsumura
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Publication number: 20030069107Abstract: A control apparatus of an automatic transmission capable of achieving a smooth change of output shaft torque to torque which can be generated by a friction clutch, thus enabling a smooth gear change even if the output shaft torque is high at the gear change. If the output shaft torque exceeds limit transmission output shaft torque obtained by multiplying a torque capacity of the friction clutch by a gear ratio provided for the friction clutch when a gear change command is issued in the automatic transmission, engine torque is controlled so as to make the output shaft torque decreased to the limit transmission output shaft torque, and then the engine torque control is switched when the output shaft torque decreased to the limit transmission output shaft torque to start the gear change operation.Type: ApplicationFiled: November 20, 2002Publication date: April 10, 2003Applicant: Hitachi, Ltd.Inventors: Mitsuo Kayano, Toshimichi Minowa, Tatsuya Ochi, Hiroshi Sakamoto
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Patent number: 6536296Abstract: An apparatus and a method of controlling a vehicle is provided for correcting a lowered value of the torque of an output shaft in the gear shifting and suppressing a revolution speed of an input shaft on the basis of the lowered torque correction. The torque of the input shaft is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.Type: GrantFiled: March 18, 2002Date of Patent: March 25, 2003Assignee: Hitachi, Ltd.Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
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Patent number: 6523436Abstract: A generator use gear enable to rotate freely against an input shaft of a transmission mechanism for altering a rotation number of an engine and a clutch mechanisms in which the input shaft of the transmission mechanism and the generator use gear are rotated together with are provided between the engine and the transmission mechanism. Further, on an extension line of the input of the transmission mechanism and to a rear portion of the transmission mechanism, an electric motor is provided. Accordingly, a compact size power transmission system of an automobile can be attained.Type: GrantFiled: March 22, 2002Date of Patent: February 25, 2003Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Hiroshi Sakamoto, Mitsuo Kayano
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Patent number: 6514172Abstract: A control apparatus of an automatic transmission capable of achieving a smooth change of output shaft torque to torque which can be generated by a friction clutch, thus enabling a smooth gear change even if the output shaft torque is high at the gear change. If the output shaft torque exceeds limit transmission output shaft torque obtained by multiplying a torque capacity of the friction clutch by a gear ratio provided for the friction clutch when a gear change command is issued in the automatic transmission, engine torque is controlled so as to make the output shaft torque decreased to the limit transmission output shaft torque, and then the engine torque control is switched when the output shaft torque decreased to the limit transmission output shaft torque to start the gear change operation.Type: GrantFiled: February 26, 2001Date of Patent: February 4, 2003Assignee: Hitachi, Ltd.Inventors: Mitsuo Kayano, Toshimichi Minowa, Tatsuya Ochi, Hiroshi Sakamoto
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Patent number: 6502474Abstract: A control apparatus and method of a vehicle is provided for correcting a lowered value of the output shaft torque in the gear shifting and suppressing a input shaft speed on the basis of the lowered torque correction. The input shaft torque is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.Type: GrantFiled: February 26, 2001Date of Patent: January 7, 2003Assignee: Hitachi, Ltd.Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi