Patents by Inventor Takahide Mizuno
Takahide Mizuno 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: 9487207Abstract: A system and method of compensating for torque converter slip in a motor vehicle include measuring rotational speeds of an engine crankshaft and mainshaft, as well as measuring operating temperatures of a fluid associated with the motor vehicle. Engine output torque is adjusted as required by controlling some combination of ignition timing, intake air flow, fuel injection, and accessory load. A system and method for deactivating a torque compensation system retrieves a number of times the torque compensation system has been activated over a set period. If the number exceeds a predetermined number of activations, the torque compensation system is deactivated.Type: GrantFiled: January 17, 2014Date of Patent: November 8, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Dan Nagashima, Takahide Mizuno, Hirokazu Toyoshima, Lee O'Donnell, Naomichi Tonokura, Akio Muto, Yutaka Ishikawa
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Patent number: 9366198Abstract: In a malfunction judging method for a fuel feeding apparatus in an internal-combustion engine, a feedback correction value is calculated based on an air-fuel ratio parameter and a predetermined feedback control algorithm. In which region a load parameter exists among a first region in which only a first fuel feeding apparatus is used, a second region in which only a second fuel feeding apparatus is used, and a third region other than the first region and the second region is determined. The feedback correction value calculated in a case where the load parameter exists in the first region is determined as a first learned value using a predetermined first learning method. The feedback correction value calculated in a case where the load parameter exists in the second region is determined as a second learned value using a predetermined second learning method.Type: GrantFiled: January 15, 2015Date of Patent: June 14, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Izumiura, Koichiro Shinozaki, Takahide Mizuno, Kentaro Onuma, Yuichi Masukake
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Publication number: 20150198107Abstract: In a malfunction judging method for a fuel feeding apparatus in an internal-combustion engine, a feedback correction value is calculated based on an air-fuel ratio parameter and a predetermined feedback control algorithm. In which region a load parameter exists among a first region in which only a first fuel feeding apparatus is used, a second region in which only a second fuel feeding apparatus is used, and a third region other than the first region and the second region is determined. The feedback correction value calculated in a case where the load parameter exists in the first region is determined as a first learned value using a predetermined first learning method. The feedback correction value calculated in a case where the load parameter exists in the second region is determined as a second learned value using a predetermined second learning method.Type: ApplicationFiled: January 15, 2015Publication date: July 16, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Atsushi IZUMIURA, Koichiro SHINOZAKI, Takahide MIZUNO, Kentaro ONUMA, Yuichi MASUKAKE
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Patent number: 8823204Abstract: An electric load system and method for a vehicle includes an electric load, electric devices, an electrically driven element operating in an operating state, an electric load detector to measure an electric load generated by the electric devices, and an electric control unit communicating with the electric load detector and the electrically driven element to determine an electric load of the electric load system. The method includes estimating an electric load of the electrically driven element based on an operating state of the electrically driven element via the electric control unit and adding the electric load from the electrically driven element to an electric load measured by the electric load detector.Type: GrantFiled: February 28, 2011Date of Patent: September 2, 2014Assignee: Honda Motor Co., Ltd.Inventors: Paul DeHart, Takahide Mizuno, Hirokazu Toyoshima, Masanori Ohara, Joji Hijikata, Kazuhiko Imamura, Kotaro Miyashita
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Publication number: 20140195130Abstract: A system and method of compensating for torque converter slip in a motor vehicle include measuring rotational speeds of an engine crankshaft and mainshaft, as well as measuring operating temperatures of a fluid associated with the motor vehicle. Engine output torque is adjusted as required by controlling some combination of ignition timing, intake air flow, fuel injection, and accessory load. A system and method for deactivating a torque compensation system retrieves a number of times the torque compensation system has been activated over a set period. If the number exceeds a predetermined number of activations, the torque compensation system is deactivated.Type: ApplicationFiled: January 17, 2014Publication date: July 10, 2014Applicant: Honda Motor Co., Ltd.Inventors: Dan Nagashima, Takahide Mizuno, Hirokazu Toyoshima, Lee O'Donnell, Naomichi Tonokura, Akio Muto, Yutaka Ishikawa
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Patent number: 8640838Abstract: A system and method of compensating for torque converter slip in a motor vehicle include measuring rotational speeds of an engine crankshaft and mainshaft, as well as measuring operating temperatures of a fluid associated with the motor vehicle. Engine output torque is adjusted as required by controlling some combination of ignition timing, intake air flow, fuel injection, and accessory load.Type: GrantFiled: May 6, 2010Date of Patent: February 4, 2014Assignee: Honda Motor Co., Ltd.Inventors: Dan Nagashima, Takahide Mizuno, Hirokazu Toyoshima, Lee O'Donnell, Naomichi Tonokura, Akio Muto, Yutaka Ishikawa
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Publication number: 20130073190Abstract: A method of controlling an engine during starting is disclosed. During cold starting and following a refueling, a default alcohol value is used to control various systems associated with the engine, including fuel injection and ignition timing. The default alcohol value is used to ensure reliable starting. During non-cold starting and following a refueling, the current alcohol value is used to minimize fuel inefficiencies.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: Honda Motor Co., Ltd.Inventors: Michael Neisen, Dan Nagashima, Todd Luken, Takahide Mizuno
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Publication number: 20120217798Abstract: An electric load system and method for a vehicle includes an electric load, electric devices, an electrically driven element operating in an operating state, an electric load detector to measure an electric load generated by the electric devices, and an electric control unit communicating with the electric load detector and the electrically driven element to determine an electric load of the electric load system. The method includes estimating an electric load of the electrically driven element based on an operating state of the electrically driven element via the electric control unit and adding the electric load from the electrically driven element to an electric load measured by the electric load detector.Type: ApplicationFiled: February 28, 2011Publication date: August 30, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Paul DeHart, Takahide Mizuno, Hirokazu Toyoshima, Masanori Ohara, Joji Hijikata, Kazuhiko Imamura, Kotaro Miyashita
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Patent number: 8255119Abstract: A vehicle body slip angle-estimating device which, in estimating a vehicle body slip angle with an algorithm using a nonlinear model, is capable of accurately estimating a vehicle body slip angle irrespective of whether the frequency of occurrence of a state during traveling of the vehicle. A basic value-calculating section calculates a basic value of a vehicle body slip angle with an algorithm using a neural network model. A turning state-determining section determines whether the vehicle is in a predetermined limit turning traveling state. A correction value-calculating section calculates a correction value with an algorithm using a predetermined linear model when the vehicle is in the predetermined state. In the other cases, the correction value is set to 0. A straight traveling-determining section sets the angle to the sum of the basic value and the correction value when the vehicle is in a turning traveling state.Type: GrantFiled: April 17, 2008Date of Patent: August 28, 2012Assignee: Honda Motor Co., Ltd.Inventors: Takafumi Komori, Shusuke Akazaki, Takahide Mizuno
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Patent number: 8219300Abstract: An engine control system and method for controlling engine air flow during a deceleration fuel cut includes an internal combustion engine, an anti-lock braking system (ABS), and an electronic control unit (ECU) that controls the engine. The ECU establishes a desired air flow rate for the internal combustion engine, which is taken from an ABS failed condition look-up table when determined that the ABS has failed while the engine is in a deceleration fuel cut mode, and otherwise is taken from a normal condition look-up table.Type: GrantFiled: April 10, 2009Date of Patent: July 10, 2012Assignee: Honda Motor Co., Ltd.Inventors: Dan Nagashima, Paul DeHart, Hirokazu Toyoshima, Takahide Mizuno, Yoshiharu Saitou, Yutaka Ishikawa, Akio Muto
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Publication number: 20110276239Abstract: A system and method of compensating for torque converter slip in a motor vehicle include measuring rotational speeds of an engine crankshaft and mainshaft, as well as measuring operating temperatures of a fluid associated with the motor vehicle. Engine output torque is adjusted as required by controlling some combination of ignition timing, intake air flow, fuel injection, and accessory load.Type: ApplicationFiled: May 6, 2010Publication date: November 10, 2011Applicant: Honda Motor Co., Ltd.Inventors: Dan Nagashima, Takahide Mizuno, Hirokazu Toyoshima, Lee O'Donnell, Naomichi Tonokura, Akio Muto, Yutaka Ishikawa
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Patent number: 8024107Abstract: An ignition timing control system for an internal combustion engine, which is capable of ensuring both stability of control in a steady operating condition of the engine, and an excellent follow-up property of a controlled variable to a target value in a transient operating condition of the engine, even when the controlled variable contains a lot of high-frequency noise components. In the ignition timing control system, a maximum pressure angle-calculating section calculates a maximum pressure angle based on an in-cylinder pressure and a crank angle position. A target angle-calculating section calculates a target angle. A maximum pressure angle controller calculates a maximum pressure angle correction term with a control algorithm to which is applied a sliding mode control algorithm, using a value obtained by performing ?-filtering on a switching function, such that the maximum pressure angle converges to the target angle. The ignition timing is calculated by adding corrected ignition timing to the value.Type: GrantFiled: August 30, 2007Date of Patent: September 20, 2011Assignee: Honda Motor Co., Ltd.Inventors: Takahide Mizuno, Shusuke Akazaki, Tetsuya Ishiguro
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Publication number: 20100262351Abstract: An engine control system and method for controlling engine air flow during a deceleration fuel cut includes an internal combustion engine, an anti-lock braking system (ABS), and an electronic control unit (ECU) that controls the engine. The ECU establishes a desired air flow rate for the internal combustion engine, which is taken from an ABS failed condition look-up table when determined that the ABS has failed while the engine is in a deceleration fuel cut mode, and otherwise is taken from a normal condition look-up table.Type: ApplicationFiled: April 10, 2009Publication date: October 14, 2010Inventors: Dan Nagashima, Paul DeHart, Hirokazu Toyoshima, Takahide Mizuno, Yoshiharu Saitou, Yutaka Ishikawa, Akio Muto
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Patent number: 7610139Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of detecting an in-cylinder pressure accurately without being adversely affected by changes in the atmospheric pressure even when the atmospheric pressure changes. An in-cylinder pressure sensor detects pressure within a cylinder as a detected in-cylinder pressure. An ECU estimates pressure generated in the cylinder during a non-combustion period as a motoring pressure. An atmospheric pressure sensor detects an atmospheric pressure (PA). The ECU corrects the motoring pressure according to the atmospheric pressure and identifies correction parameters such that the difference between the detected in-cylinder pressure detected during a compression stroke of the engine and the corrected motoring pressure becomes minimum, and corrects the detected in-cylinder pressure by the identified correction parameters, to thereby calculate an in-cylinder pressure.Type: GrantFiled: August 29, 2007Date of Patent: October 27, 2009Assignee: Honda Motor Co., Ltd.Inventors: Takahide Mizuno, Shusuke Akazaki, Hiroyuki Sugiura, Mitsuo Hashizume
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Patent number: 7606650Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of calculating a hysteresis amount properly to thereby detect in-cylinder pressure with high accuracy. The in-cylinder pressure detection device comprises an in-cylinder pressure sensor that detects in-cylinder pressure as a detected in-cylinder pressure. The in-cylinder pressure detection device estimates an in-cylinder pressure generated when combustion is not performed in the cylinder, as a motoring pressure, calculates a hysteresis amount indicative of a difference between the detected in-cylinder pressure and an actual in-cylinder pressure, based on the detected in-cylinder pressure and the motoring pressure obtained during the exhaust stroke of the engine, and corrects the detected in-cylinder pressure based on the calculated hysteresis amount.Type: GrantFiled: May 9, 2007Date of Patent: October 20, 2009Assignee: Honda Motor Co., Ltd.Inventors: Takahide Mizuno, Shusuke Akazaki, Hiroyuki Sugiura, Yuji Yamamoto, Mitsuo Hashizume, Kentaro Onuma
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Patent number: 7455047Abstract: An engine control unit includes pressure detector provided in a combustion chamber of the engine. A motoring pressure of the engine is estimated. A combustion starting time is detected when the difference between an internal pressure detected by the pressure detector and the pressure estimated by the ECU exceeds a predetermined value. When the internal pressure detected by the pressure detector reaches its peak after the combustion starting time has been detected, the crank angle at this time point is determined to correspond to the maximum internal cylinder pressure that is generated by combustion.Type: GrantFiled: April 23, 2007Date of Patent: November 25, 2008Assignee: Honda Motor Co., Ltd.Inventors: Mitsuo Hashizume, Kentaro Onuma, Takahide Mizuno, Shusuke Akazaki
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Publication number: 20080262677Abstract: A vehicle body slip angle-estimating device which, in estimating a vehicle body slip angle with an algorithm using a nonlinear model, is capable of accurately estimating a vehicle body slip angle irrespective of whether the frequency of occurrence of a state during traveling of the vehicle. A basic value-calculating section calculates a basic value of a vehicle body slip angle with an algorithm using a neural network model. A turning state-determining section determines whether the vehicle is in a predetermined limit turning traveling state. A correction value-calculating section calculates a correction value with an algorithm using a predetermined linear model when the vehicle is in the predetermined state. In the other cases, the correction value is set to 0. A straight traveling-determining section sets the angle to the sum of the basic value and the correction value when the vehicle is in a turning traveling state.Type: ApplicationFiled: April 17, 2008Publication date: October 23, 2008Inventors: Takafumi Komori, Shusuke Akazaki, Takahide Mizuno
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Patent number: 7386388Abstract: An air-fuel ratio control system for an internal combustion engine, which is capable of accurately estimating an exhaust gas state parameter according to the properties of fuel, thereby making it possible to properly control the air-fuel ratio of a mixture.Type: GrantFiled: May 9, 2007Date of Patent: June 10, 2008Assignee: Honda Motor Co., Ltd.Inventors: Shusuke Akazaki, Takahide Mizuno, Masayoshi Nishino, Mitsuo Hashizume
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Publication number: 20080053404Abstract: An ignition timing control system for an internal combustion engine, which is capable of ensuring both stability of control in a steady operating condition of the engine, and an excellent follow-up property of a controlled variable to a target value in a transient operating condition of the engine, even when the controlled variable contains a lot of high-frequency noise components. In the ignition timing control system, a maximum pressure angle-calculating section calculates a maximum pressure angle based on an in-cylinder pressure and a crank angle position. A target angle-calculating section calculates a target angle. A maximum pressure angle controller calculates a maximum pressure angle correction term with a control algorithm to which is applied a sliding mode control algorithm, using a value obtained by performing ?-filtering on a switching function, such that the maximum pressure angle converges to the target angle. The ignition timing is calculated by adding corrected ignition timing to the value.Type: ApplicationFiled: August 30, 2007Publication date: March 6, 2008Inventors: Takahide Mizuno, Shusuke Akazaki, Tetsuya Ishiguro
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Publication number: 20080059044Abstract: An in-cylinder pressure detection device for an internal combustion engine, which is capable of detecting an in-cylinder pressure accurately without being adversely affected by changes in the atmospheric pressure even when the atmospheric pressure changes. An in-cylinder pressure sensor detects pressure within a cylinder as a detected in-cylinder pressure. An ECU estimates pressure generated in the cylinder during a non-combustion period as a motoring pressure. An atmospheric pressure sensor detects an atmospheric pressure (PA). The ECU corrects the motoring pressure according to the atmospheric pressure and identifies correction parameters such that the difference between the detected in-cylinder pressure detected during a compression stroke of the engine and the corrected motoring pressure becomes minimum, and corrects the detected in-cylinder pressure by the identified correction parameters, to thereby calculate an in-cylinder pressure.Type: ApplicationFiled: August 29, 2007Publication date: March 6, 2008Inventors: Takahide Mizuno, Shusuke Akazaki, Hiroyuki Sugiura, Mitsuo Hashizume