Patents by Inventor Masahiro Iriyama
Masahiro Iriyama 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: 20230174064Abstract: A drive source controller is configured to control a drive torque of a drive source that drives a vehicle. The drive source controller is configured to prohibit acceptance of drive source required torque from a cruise controller when automatic braking control is activated during cruise control, or not output the drive source required torque to the drive source controller when the automatic braking control is activated during the cruise control.Type: ApplicationFiled: May 15, 2020Publication date: June 8, 2023Inventors: Hidemasa KINOTO, Hiroshi ARITA, Hideki KAWASHIMA, Hiroaki KAWAMURA, Yuuya KOGURE, Masahiro IRIYAMA
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Patent number: 10024243Abstract: An automatic transmission performs a shift-up operation when the accelerator pedal is released from a depression during a vehicle is running. An engine rotation speed immediately after the shift-up operation is predicted on the basis of the engine rotation speed and a gear ratio of the transmission after the shift-up operation. When a fuel recovery is predicted to be performed immediately after the shift-up operation, the fuel recovery is advanced such that it is performed in the inertial phase of the transmission.Type: GrantFiled: June 28, 2012Date of Patent: July 17, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshinobu Kawamoto, Masahiro Iriyama
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Patent number: 9664123Abstract: A vehicle control device for controlling a vehicle with an engine includes a target engine output calculation unit configured to calculate a target engine output based on a target drive force, a vehicle speed and an air density, and a target engine torque calculation unit configured to calculate a target engine torque based on the target engine output and the air density. The target engine output calculation unit is configured to set a smaller target engine output when the air density is low than when the air density is high, and the target engine torque calculation unit is configured to set a larger target engine torque when the air density is low than when the air density is high.Type: GrantFiled: June 14, 2013Date of Patent: May 30, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Yuzo Kageyama, Takahiro Yoshino, Masashi Ono, Masahiro Iriyama
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Patent number: 9599054Abstract: When an accelerator pedal is released while a vehicle is running, a lockup clutch is unlocked. Simultaneously, ignition timing is retarded and a fuel-cut operation to stop fuel supply to an internal combustion engine is performed. However, when it is predicted that a fuel recovery is to be performed after unlocking the lockup clutch, execution of the fuel-cut operation is prohibited. A shock due to the fuel recovery after the fuel-cut operation performed when the accelerator pedal is released is thereby prevented.Type: GrantFiled: July 17, 2012Date of Patent: March 21, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshinobu Kawamoto, Masahiro Iriyama
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Patent number: 9568099Abstract: There is provided an oil pressure control device for a belt-type continuously variable transmission which includes two pulleys and a belt, wherein each of the two pulleys has a movable sheave which moves by oil pressure supplied to a hydraulic chamber, wherein the oil pressure control device calculates a request torque according to a running state, wherein when calculating the oil pressure which is supplied to the hydraulic chamber of the movable sheave on the basis of the request torque, the oil pressure control device reduces the request torque if the request torque is greater by a predetermined value or more than an actual input torque which is inputted to the belt-type continuously variable transmission. Accordingly, it is possible to provide an oil pressure control device for a belt-type continuously variable transmission with which undesirable vibration can be avoided by means of stable speed-ratio control.Type: GrantFiled: October 17, 2014Date of Patent: February 14, 2017Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki Honma, Seiichiro Takahashi, Akito Suzuki, Masahiro Iriyama
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Patent number: 9534687Abstract: A vehicle control device has a controller configured to control a hydraulic pressure required for shifting of a sub-transmission based on an input torque to the sub-transmission during the coordinated shift, and to execute limitation processing in which, when an instruction to execute specific control causing fluctuation in the input torque to the sub-transmission during the coordinated shift is issued, execution of the specific control is prohibited or the specific control is executed by limiting a control amount.Type: GrantFiled: May 15, 2014Date of Patent: January 3, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Naoya Onozato, Masahiro Iriyama
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Patent number: 9493165Abstract: A drive force control method for a vehicle, the vehicle having an accelerator pedal, a motive force source that outputs a driving force in the form of a rotation according to an accelerator opening of the accelerator pedal, a drive wheel, and a transmission that transmits the rotation output from the motive force source to the drive wheel after changing a rotation speed thereof, the method including detecting the accelerator opening, detecting a vehicle running condition, calculating a target vehicle drive force based on the accelerator opening, calculating a target input rotation speed of the transmission based on the target vehicle drive force, calculating a target input torque of the transmission based on the target vehicle drive force, and calculating a target vehicle drive force in a vehicle deceleration state that is a variable value depending on the vehicle running condition.Type: GrantFiled: November 19, 2013Date of Patent: November 15, 2016Assignee: Nissan Motor Co., Ltd.Inventors: Takahiro Yoshino, Masahiro Iriyama
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Patent number: 9441549Abstract: A control device for internal combustion engine mounted in a vehicle includes a throttle valve provided in an intake passage of the internal combustion engine and capable of changing a cross-sectional area of the intake passage, a variable valve capable of changing opening and closing timings of an intake valve of the internal combustion engine, basic target torque calculation means for calculating a basic target torque of the internal combustion engine according to an operating state of the internal combustion engine, vibration control target torque calculation means for calculating a vibration control target torque of the internal combustion engine to suppress vehicle vibration according to a vibration component of the vehicle, and cylinder intake air amount control means for controlling a cylinder intake air amount by controlling one of the throttle valve and the variable valve according to the vibration control target torque and controlling the other of the throttle valve and the variable valve accordingType: GrantFiled: May 1, 2013Date of Patent: September 13, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Naoya Onozato, Masahiro Iriyama, Takahiro Yoshino, Masahiro Arai, Kenji Suzuki
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Publication number: 20160223078Abstract: There is provided an oil pressure control device for a belt-type continuously variable transmission which includes two pulleys and a belt, wherein each of the two pulleys has a movable sheave which moves by oil pressure supplied to a hydraulic chamber, wherein the oil pressure control device calculates a request torque according to a running state, wherein when calculating the oil pressure which is supplied to the hydraulic chamber of the movable sheave on the basis of the request torque, the oil pressure control device reduces the request torque if the request torque is greater by a predetermined value or more than an actual input torque which is inputted to the belt-type continuously variable transmission. Accordingly, it is possible to provide an oil pressure control device for a belt-type continuously variable transmission with which undesirable vibration can be avoided by means of stable speed-ratio control.Type: ApplicationFiled: October 17, 2014Publication date: August 4, 2016Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Tomoaki HONMA, Seiichiro TAKAHASHI, Akito SUZUKI, Masahiro IRIYAMA
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Patent number: 9403535Abstract: A vehicle control device includes a target drive force setting unit configured to set a target drive force based on an operating state, a target speed ratio setting unit configured to set a target speed ratio of a continuously variable transmission to achieve the target drive force and a target torque setting unit configured to set a target torque of a drive source to achieve the target drive force. The target drive force setting unit is configured to set a target drive force reduced in a stepwise manner at the time of upshifting in the continuously variable transmission.Type: GrantFiled: July 19, 2013Date of Patent: August 2, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Masashi Ono, Takahiro Yoshino, Masahiro Iriyama
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Patent number: 9376113Abstract: A vehicle control device that sets a target drive force based on a vehicle speed and an accelerator opening degree, in which if a running mode is switched from a normal mode to an acceleration requirement mode, the target drive force is set based on the accelerator opening degree and the vehicle speed at the time of mode switching.Type: GrantFiled: July 19, 2013Date of Patent: June 28, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Masashi Ono, Masahiro Iriyama, Takahiro Yoshino
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Publication number: 20160169383Abstract: A vehicle control device has a controller configured to control a hydraulic pressure required for shifting of a sub-transmission based on an input torque to the sub-transmission during the coordinated shift, and to execute limitation processing in which, when an instruction to execute specific control causing fluctuation in the input torque to the sub-transmission during the coordinated shift is issued, execution of the specific control is prohibited or the specific control is executed by limiting a control amount.Type: ApplicationFiled: May 15, 2014Publication date: June 16, 2016Applicant: Nissan Motor Co., Ltd.Inventors: Naoya ONOZATO, Masahiro IRIYAMA
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Patent number: 9297323Abstract: An unlock operation of a lockup clutch and a shift-up operation of an automatic transmission are performed together when an accelerator pedal of a vehicle is released in a state where the lockup clutch is in a lockup state. An engine rotation speed immediately after the shift-up operation is estimated on the basis of the engine rotation speed and a gear ratio of the automatic transmission after the shift-up operation. If a fuel recovery operation is predicted to be performed immediately after the shift-up operation, the fuel-cut operation is prevented, thereby suppressing a shock from occurring due to the fuel recovery when a foot release shift-up operation is performed.Type: GrantFiled: July 17, 2012Date of Patent: March 29, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshinobu Kawamoto, Masahiro Iriyama
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Patent number: 9260116Abstract: A target drive force is computed according to an accelerator pedal opening. A target input rotation speed lower limit basic value to an automatic transmission is computed based on a vehicle speed and a shift range of the automatic transmission. A target drive force lower limit correction value is computed based on the target input rotation speed lower limit basic value. The target drive force is corrected based on the target drive force lower limit correction value. A target input torque of the automatic transmission is computed based on the target drive force after correction. An input torque to the automatic transmission is controlled to the target input torque. By this control, an arbitrary drive force characteristic can be obtained in a PTD control.Type: GrantFiled: June 13, 2013Date of Patent: February 16, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Takahiro Yoshino, Masahiro Iriyama
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Publication number: 20150353089Abstract: A drive force control method for a vehicle, the vehicle having an accelerator pedal, a motive force source that outputs a driving force in the form of a rotation according to an accelerator opening of the accelerator pedal, a drive wheel, and a transmission that transmits the rotation output from the motive force source to the drive wheel after changing a rotation speed thereof, the method including detecting the accelerator opening, detecting a vehicle running condition, calculating a target vehicle drive force based on the accelerator opening, calculating a target input rotation speed of the transmission based on the target vehicle drive force, calculating a target input torque of the transmission based on the target vehicle drive force, and calculating a target vehicle drive force in a vehicle deceleration state that is a variable value depending on the vehicle running condition.Type: ApplicationFiled: November 19, 2013Publication date: December 10, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Takahiro Yoshino, Masahiro Iriyama
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Publication number: 20150224993Abstract: A vehicle control device that sets a target drive force based on a vehicle speed and an accelerator opening degree, in which if a running mode is switched from a normal mode to an acceleration requirement mode, the target drive force is set based on the accelerator opening degree and the vehicle speed at the time of mode switching.Type: ApplicationFiled: July 19, 2013Publication date: August 13, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Masashi Ono, Masahiro Iriyama, Takahiro Yoshino
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Publication number: 20150217772Abstract: A vehicle control device includes a target drive force setting unit configured to set a target drive force based on an operating state, a target speed ratio setting unit configured to set a target speed ratio of a continuously variable transmission to achieve the target drive force and a target torque setting unit configured to set a target torque of a drive source to achieve the target drive force. The target drive force setting unit is configured to set a target drive force reduced in a stepwise manner at the time of upshifting in the continuously variable transmission.Type: ApplicationFiled: July 19, 2013Publication date: August 6, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Masashi Ono, Takahiro Yoshino, Masahiro Iriyama
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Publication number: 20150204254Abstract: A vehicle control device for controlling a vehicle with an engine includes a target engine output calculation unit configured to calculate a target engine output based on a target drive force, a vehicle speed and an air density, and a target engine torque calculation unit configured to calculate a target engine torque based on the target engine output and the air density. The target engine output calculation unit is configured to set a smaller target engine output when the air density is low than when the air density is high, and the target engine torque calculation unit is configured to set a larger target engine torque when the air density is low than when the air density is high.Type: ApplicationFiled: June 14, 2013Publication date: July 23, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Yuzo Kageyama, Takahiro Yoshino, Masashi Ono, Masahiro Iriyama
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Publication number: 20150167559Abstract: A control device for internal combustion engine mounted in a vehicle includes a throttle valve provided in an intake passage of the internal combustion engine and capable of changing a cross-sectional area of the intake passage, a variable valve capable of changing opening and closing timings of an intake valve of the internal combustion engine, basic target torque calculation means for calculating a basic target torque of the internal combustion engine according to an operating state of the internal combustion engine, vibration control target torque calculation means for calculating a vibration control target torque of the internal combustion engine to suppress vehicle vibration according to a vibration component of the vehicle, and cylinder intake air amount control means for controlling a cylinder intake air amount by controlling one of the throttle valve and the variable valve according to the vibration control target torque and controlling the other of the throttle valve and the variable valve accordingType: ApplicationFiled: May 1, 2013Publication date: June 18, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Naoya Onozato, Masahiro Iriyama, Takahiro Yoshino, Masahiro Arai, Kenji Suzuki
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Patent number: 9051855Abstract: To achieve an intermediate lock state in a short period when an engine is stopped and improve the accuracy of confirmation of the intermediate lock state, an engine valve timing control apparatus includes a variable valve timing mechanism configured to vary engine valve timing, and an intermediate lock mechanism configured to restrict relative rotation positions of a first and a second rotor of the valve timing mechanism at an intermediate lock position for starting the engine. Upon detection of an engine stop request, the valve timing mechanism and the intermediate lock mechanism are driven and controlled for establishing an intermediate lock state. When a predetermined period from detection of the engine stop request has expired without detecting the intermediate lock state within the predetermined period, an engine stopping process is executed. Even after the engine stopping process has been executed, monitoring of the intermediate lock state is continued.Type: GrantFiled: July 2, 2012Date of Patent: June 9, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Hironori Ito, Kenji Ariga, Ken Shiozawa, Takahiro Miura, Motomu Kitamura, Naoki Osada, Masahiro Iriyama, Masahiro Arai, Hiroyuki Itoyama, Hiroshi Abe