Patents by Inventor Masahiro Nagoshi
Masahiro Nagoshi 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: 20220242378Abstract: A braking control system includes control circuitry configured to control first and second brakes in a vehicle. The control circuitry is configured to calculate a target braking force in accordance with the operation amount of a brake pedal by a driver, determine a first braking force and a second braking force based on the target braking force, and control each of the first and second brakes such that each of the determined braking forces is generated in the vehicle. The first and second braking forces are determined such that a sum of the first and second braking forces becomes the target braking force and a pitch behavior specified by a preset pitch behavior model occurs in the vehicle.Type: ApplicationFiled: January 24, 2022Publication date: August 4, 2022Applicant: Mazda Motor CorporationInventors: Akira HASHIZAKA, Masahiro NAGOSHI, Norihira WAKAYAMA, Shinichi KAIHARA, Masakazu TAKADA, Kentaro WATANABE, Yuji NAKANO, Hirotaka MOCHIZUKI, Akira TSUDA, Naoki TSUKAMOTO
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Patent number: 11313312Abstract: A control unit performs a vehicle attitude control to reduce a torque generated by an engine when an increase in a steering angle exceeds a standard increase, and a spark ignition controlled compression ignition combustion in a predetermined operating range. In the spark ignition controlled compression ignition combustion, switching of an air-fuel ratio mode is performed between a first air-fuel ratio mode (?>1) is formed and a second air-fuel ratio mode (in which a mixed gas of ??1) is formed. If the switching of the air-fuel ratio mode is requested without the vehicle attitude control, the control unit allows performing the requested switching of the air-fuel ratio mode. In contrast, if the mode switching is requested in a state where the vehicle attitude control is requested, the control unit disallows switching of the air-fuel ratio mode even when the switching of the air-fuel ratio mode is requested.Type: GrantFiled: January 16, 2019Date of Patent: April 26, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Shinji Takayama, Takeatsu Ito, Masahiro Nagoshi, Yuichiro Akiya, Yuto Matsushima, Kenko Ujihara, Daisaku Ogawa, Daisuke Umetsu
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Patent number: 11242817Abstract: An engine control method includes a step of setting combustion mode in which a first combustion mode in which a mixed gas is combusted by propagating flame or a second combustion mode in which the mixed gas is combusted by self-ignition is selected, a step of setting air-fuel ratio mode in which a lean first air-fuel ratio mode or a second air-fuel ratio mode equal to or richer than a theoretical air-fuel ratio is selected, a step of setting torque reduction in which a torque reduction amount by which a torque generated by an engine is reduced based on a steer angle of a steering wheel, and a suppressing step in which reducing the torque generated by the engine based on the torque reduction amount set in the step of setting torque reduction is suppressed.Type: GrantFiled: January 16, 2019Date of Patent: February 8, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Shinji Takayama, Takeatsu Ito, Masahiro Nagoshi, Yuichiro Akiya, Yuto Matsushima, Kenko Ujihara, Daisaku Ogawa, Daisuke Umetsu
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Patent number: 11143118Abstract: To provide a control device for a vehicle capable of controlling the torque of a drive source so as to appropriately balance the suppression of body vibrations and the securing of a transient response during acceleration or deceleration. This control device for a vehicle includes an accelerator position sensor that detects the accelerator opening, a torque adjustment mechanism such as a throttle valve that adjusts the torque of an engine as the drive source of the vehicle, and a powertrain control module (PCM) that controls the torque adjustment mechanism based on the accelerator opening. The PCM sets the target acceleration of the vehicle based on the accelerator opening, sets the target torsion angle of the drive shaft based on the target acceleration, sets the target torque of the engine based on the target torsion, and controls the torque adjustment mechanism based on the target torque.Type: GrantFiled: May 20, 2019Date of Patent: October 12, 2021Assignee: Mazda Motor CorporationInventors: Yuichiro Yamane, Akira Tsuda, Yuki Ishiyama, Takefumi Takada, Yuto Sakasegawa, Kazuki Kawamoto, Jumpei Takeda, Hiroyuki Morioka, Shin Kato, Masahiro Nagoshi, Atsushi Yamasaki
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Publication number: 20210199059Abstract: To provide a control device for a vehicle capable of controlling the torque of a drive source so as to appropriately balance the suppression of body vibrations and the securing of a transient response during acceleration or deceleration. This control device for a vehicle includes an accelerator position sensor that detects the accelerator opening, a torque adjustment mechanism such as a throttle valve that adjusts the torque of an engine as the drive source of the vehicle, and a powertrain control module (PCM) that controls the torque adjustment mechanism based on the accelerator opening. The PCM sets the target acceleration of the vehicle based on the accelerator opening, sets the target torsion angle of the drive shaft based on the target acceleration, sets the target torque of the engine based on the target torsion, and controls the torque adjustment mechanism based on the target torque.Type: ApplicationFiled: May 20, 2019Publication date: July 1, 2021Inventors: Yuichiro YAMANE, Akira TSUDA, Yuki ISHIYAMA, Takefumi TAKADA, Yuto SAKASEGAWA, Kazuki KAWAMOTO, Jumpei TAKEDA, Hiroyuki MORIOKA, Shin KATO, Masahiro NAGOSHI, Atsushi YAMASAKI
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Publication number: 20210079869Abstract: An engine control method includes a step of setting combustion mode in which a first combustion mode in which a mixed gas is combusted by propagating flame or a second combustion mode in which the mixed gas is combusted by self-ignition is selected, a step of setting air-fuel ratio mode in which a lean first air-fuel ratio mode or a second air-fuel ratio mode equal to or richer than a theoretical air-fuel ratio is selected, a step of setting torque reduction in which a torque reduction amount by which a torque generated by an engine is reduced based on a steer angle of a steering wheel, and a suppressing step in which reducing the torque generated by the engine based on the torque reduction amount set in the step of setting torque reduction is suppressed.Type: ApplicationFiled: January 16, 2019Publication date: March 18, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Shinji TAKAYAMA, Takeatsu ITO, Masahiro NAGOSHI, Yuichiro AKIYA, Yuto MATSUSHIMA, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
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Publication number: 20210047978Abstract: A control unit performs a vehicle attitude control to reduce a torque generated by an engine when an increase in a steering angle exceeds a standard increase, and a spark ignition controlled compression ignition combustion in a predetermined operating range. In the spark ignition controlled compression ignition combustion, switching of an air-fuel ratio mode is performed between a first air-fuel ratio mode (?>1) is formed and a second air-fuel ratio mode (in which a mixed gas of ??1) is formed. If the switching of the air-fuel ratio mode is requested without the vehicle attitude control, the control unit allows performing the requested switching of the air-fuel ratio mode. In contrast, if the mode switching is requested in a state where the vehicle attitude control is requested, the control unit disallows switching of the air-fuel ratio mode even when the switching of the air-fuel ratio mode is requested.Type: ApplicationFiled: January 16, 2019Publication date: February 18, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Shinji TAKAYAMA, Takeatsu ITO, Masahiro NAGOSHI, Yuichiro AKIYA, Yuto MATSUSHIMA, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
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Patent number: 10611235Abstract: A grille shutter control device of a vehicle includes an encapsulation structure covering an engine, a grille shutter provided at an opening formed at a front wall portion of the encapsulation structure, an actuator configured to move the grille shutter to open/close the opening, and a controller configured to control the actuator. The controller determines whether or not heat damage occurs on a related component relating to the engine upon key OFF, closes the grille shutter upon key OFF in the case of determining that the heat damage will not occur, and opens the grille shutter upon key OFF in the case of determining that the heat damage will occur.Type: GrantFiled: October 9, 2018Date of Patent: April 7, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Hironobu Sakashita, Kentaro Ota, Masahiro Nagoshi, Keisuke Tanaka, Shinichi Hikitani, Junki Yoshizako, Masanobu Koutoku, Toshinori Ueno
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Publication number: 20190126741Abstract: A grille shutter control device of a vehicle includes an encapsulation structure covering an engine, a grille shutter provided at an opening formed at a front wall portion of the encapsulation structure, an actuator configured to move the grille shutter to open/close the opening, and a controller configured to control the actuator. The controller determines whether or not heat damage occurs on a related component relating to the engine upon key OFF, closes the grille shutter upon key OFF in the case of determining that the heat damage will not occur, and opens the grille shutter upon key OFF in the case of determining that the heat damage will occur.Type: ApplicationFiled: October 9, 2018Publication date: May 2, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Hironobu SAKASHITA, Kentaro OTA, Masahiro NAGOSHI, Keisuke TANAKA, Shinichi HIKITANI, Junki YOSHIZAKO, Masanobu KOUTOKU, Toshinori UENO
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Patent number: 9702286Abstract: Provided is a system where a composite catalyst into which an LNT catalyst and an oxidation catalyst are combined, a catalyzed particulate filter, an injector configured to inject a urea water solution into an exhaust gas passage, and an SCR catalyst are arranged in this order in an upstream-to-downstream direction of the flow of the exhaust gas.Type: GrantFiled: October 27, 2015Date of Patent: July 11, 2017Assignee: MAZDA MOTOR CORPORATIONInventors: Masahiro Nagoshi, Masayuki Tetsuno, Yoshio Mizuta, Kohei Fujii, Hiroshi Yamada, Koichiro Harada, Yoshiyuki Sato, Akihide Takami
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Publication number: 20160121266Abstract: Provided is a system where a composite catalyst into which an LNT catalyst and an oxidation catalyst are combined, a catalyzed particulate filter, an injector configured to inject a urea water solution into an exhaust gas passage, and an SCR catalyst are arranged in this order in an upstream-to-downstream direction of the flow of the exhaust gas.Type: ApplicationFiled: October 27, 2015Publication date: May 5, 2016Applicant: MAZDA MOTOR CORPORATIONInventors: Masahiro NAGOSHI, Masayuki TETSUNO, Yoshio MIZUTA, Kohei FUJII, Hiroshi YAMADA, Koichiro HARADA, Yoshiyuki SATO, Akihide TAKAMI
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Patent number: 8682568Abstract: A diesel engine is provided, which includes an engine body to be supplied with fuel containing diesel fuel as its main component, a geometric compression ratio being set to 15:1 or below, a fuel injection valve arranged in the engine body so as to be oriented toward a cylinder of the engine body and for directly injecting the fuel into the cylinder, and a control module for controlling a mode of injecting the fuel into the cylinder through the fuel injection valve. The control module performs a main injection where the fuel is injected to cause a main combustion mainly including a diffusion combustion and performs a plurality of pre-stage injections where the fuel is injected prior to the main injection to cause a pre-stage combustion prior to the main combustion. The control module controls the injection mode of the injections to adjust a heat release rate.Type: GrantFiled: June 28, 2011Date of Patent: March 25, 2014Assignee: Mazda Motor CorporationInventors: Daisuke Shimo, Kim Sangkyu, Kyotaro Nishimoto, Shinichi Morinaga, Keiji Maruyama, Hiroshi Minamoto, Masayuki Tetsuno, Masahiro Nagoshi
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Patent number: 8408177Abstract: The invention relates to a control method for an internal combustion engine system, capable of preventing an internal combustion engine in a state after being automatically stopped, from falling into an unrestartable state. Upon satisfaction of a given automatic stop condition, the engine 10 being running is automatically stopped (Step 11). A value of current IEBAT flowing out of a starter battery 520 is compared with a given current value IEBAT—TH, in an automatically stopped state of the engine 10 (Step S30) to diagnosis a discharging status of the starter battery 520. If a result of the diagnosis indicates that the value of current IEBAT flowing out of the starter battery 520 is greater than the given current value IEBAT—TH, it is determined that a post-attached load is detected, and the engine 10 is restarted irrespective of the satisfaction or non-satisfaction of a given restart condition.Type: GrantFiled: March 2, 2009Date of Patent: April 2, 2013Assignee: Mazda Motor CorporationInventors: Masahiro Nagoshi, Masayuki Tetsuno, Katsuma Yoshida
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Patent number: 8408180Abstract: Disclosed is a control apparatus for a turbocharged diesel engine. The control apparatus comprises an engine start controller (10) operable, when an engine restart condition associated with a demand for vehicle start is satisfied, to execute a split-injection control to perform a main injection for injecting fuel at a timing around a top dead center of a compression stroke, and a post injection for injecting fuel in an expansion stroke following the main injection, during the engine restart control, and, when an engine restart condition nonassociated with the demand for vehicle start is satisfied, to execute the engine restart control to perform only the main injection without executing the split-injection control. This makes it possible to optimize the engine restart control to be execute in response to satisfaction of the engine restart condition, depending on the presence or absence of the demand for vehicle start.Type: GrantFiled: February 11, 2011Date of Patent: April 2, 2013Assignee: Mazda Motor CorporationInventors: Masahiro Nagoshi, Masayuki Tetsuno, Masaharu Marumoto
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Publication number: 20120004826Abstract: A diesel engine is provided, which includes an engine body to be supplied with fuel containing diesel fuel as its main component, a geometric compression ratio being set to 15:1 or below, a fuel injection valve arranged in the engine body so as to be oriented toward a cylinder of the engine body and for directly injecting the fuel into the cylinder, and a control module for controlling a mode of injecting the fuel into the cylinder through the fuel injection valve. The control module performs a main injection where the fuel is injected to cause a main combustion mainly including a diffusion combustion and performs a plurality of pre-stage injections where the fuel is injected prior to the main injection to cause a pre-stage combustion prior to the main combustion. The control module controls the injection mode of the injections to adjust a heat release rate.Type: ApplicationFiled: June 28, 2011Publication date: January 5, 2012Applicant: Mazda Motor CorporationInventors: Daisuke Shimo, Kim Sangkyu, Kyotaro Nishimoto, Shinichi Morinaga, Keiji Maruyama, Hiroshi Minamoto, Masayuki Tetsuno, Masahiro Nagoshi
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Publication number: 20110239645Abstract: Disclosed is a control apparatus for a turbocharged diesel engine. The control apparatus comprises an engine start controller (10) operable, when an engine restart condition associated with a demand for vehicle start is satisfied, to execute a split-injection control to perform a main injection for injecting fuel at a timing around a top dead center of a compression stroke, and a post injection for injecting fuel in an expansion stroke following the main injection, during the engine restart control, and, when an engine restart condition nonassociated with the demand for vehicle start is satisfied, to execute the engine restart control to perform only the main injection without executing the split-injection control. This makes it possible to optimize the engine restart control to be execute in response to satisfaction of the engine restart condition, depending on the presence or absence of the demand for vehicle start.Type: ApplicationFiled: February 11, 2011Publication date: October 6, 2011Applicant: MAZDA MOTOR CORPORATIONInventors: Masahiro NAGOSHI, Masayuki TETSUNO, Masaharu MARUMOTO
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Publication number: 20090241883Abstract: The invention relates to a control method for an internal combustion engine system, capable of preventing an internal combustion engine in a state after being automatically stopped, from falling into an unrestartable state. Upon satisfaction of a given automatic stop condition, the engine 10 being running is automatically stopped (Step 11). A value of current IEBAT flowing out of a starter battery 520 is compared with a given current value IEBAT—TH, in an automatically stopped state of the engine 10 (Step S30) to diagnosis a discharging status of the starter battery 520. If a result of the diagnosis indicates that the value of current IEBAT flowing out of the starter battery 520 is greater than the given current value IEBAT—TH, it is determined that a post-attached load is detected, and the engine 10 is restarted irrespective of the satisfaction or non-satisfaction of a given restart condition.Type: ApplicationFiled: March 2, 2009Publication date: October 1, 2009Applicant: MAZDA MOTOR COPORATIONInventors: Masahiro Nagoshi, Masayuki Tetsuno, Katsumasa Yoshida