Patents by Inventor Syougo Sakashita
Syougo Sakashita 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: 9790850Abstract: A turbocharger system for simultaneously improving a fuel efficiency and obtaining a satisfactory hill start performance due to a downsized engine. The system includes an electric assist turbocharger which includes a turbine disposed in an exhaust passage of an engine and driven by exhaust gas, a compressor disposed in an intake passage and driven by a rotational torque of the turbine, and an electric motor assisting a driving force of the compressor and an electric motor control unit which drives the electric motor when detecting a start operation at a sloping road.Type: GrantFiled: October 24, 2011Date of Patent: October 17, 2017Assignee: ISUZU MOTORS LIMITEDInventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Patent number: 9512843Abstract: A turbocharger system for achieving both improvement of fuel efficiency by engine downsizing and excellent shock loading resistance. The system includes: a power-assisted turbocharger mounted on a vehicle having an accessory and including a turbine disposed on an exhaust passage of an engine and driven by exhaust, a compressor disposed on an intake passage and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor; and an electric motor control unit that drives the electric motor when the accessory is being driven.Type: GrantFiled: October 26, 2011Date of Patent: December 6, 2016Assignee: ISUZU MOTORS LIMITEDInventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Patent number: 9334833Abstract: A turbocharger system for ensuring a sufficient exhaust gas recirculation (“EGR”) amount in all operating conditions, and reducing NOx emission from an engine. The system includes an EGR controller that re-circulates a part of exhaust gas discharged from the engine to an intake side. The turbocharger is a power-assisted turbocharger including an electric motor that assists a drive force of a compressor. The EGR controller controls an amount of exhaust gas recirculated to the intake side so as to inhibit the generation of NOx regardless of an amount of oxygen necessary for combustion of the engine. An electric motor control unit drives the electric motor, by the control of the EGR controller, when the amount of oxygen necessary for the combustion of the engine is deficient.Type: GrantFiled: October 24, 2011Date of Patent: May 10, 2016Assignee: ISUZU MOTORS LIMITEDInventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Patent number: 9169770Abstract: An engine system for ensuring a sufficient boost pressure during engine braking and improving a braking force of a compression release brake. The system includes: a compression release brake device that operates a compression release brake to obtain a braking force during engine braking by forcibly opening an exhaust valve and releasing a compressive pressure near a compression top dead center of an engine; a power-assisted turbocharger including a turbine disposed on an exhaust passage of the engine and driven by exhaust, a compressor disposed on an intake passage and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor; and an electric motor control unit that drives the electric motor when the compressor release brake is operated.Type: GrantFiled: October 24, 2011Date of Patent: October 27, 2015Assignee: ISUZU MOTORS LIMITEDInventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Patent number: 9046104Abstract: A turbocharger system includes: a high-pressure stage turbocharger including a high-pressure stage turbine disposed on an exhaust passage and driven by exhaust, and a high-pressure stage compressor disposed on an intake passage and driven by a rotational torque of the high-pressure stage turbine; and a low-pressure stage turbocharger including a low-pressure stage turbine disposed on the exhaust passage of a more downstream side than the high-pressure stage turbine and driven by exhaust, and a low-pressure stage compressor disposed on the intake passage of a more upstream side than the high-pressure stage compressor and driven by a rotational torque of the low-pressure stage turbine, wherein the high-pressure stage turbocharger includes an electric motor that assists a drive force of the high-pressure stage compressor.Type: GrantFiled: October 26, 2011Date of Patent: June 2, 2015Assignee: ISUZU MOTORS LIMITEDInventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130213351Abstract: An engine system capable of immediately restarting an engine upon detecting a driver's reaccelerating operation while an engine speed is decreased by idle-stop control. The system includes an idle-stop control unit which performs the idle-stop control of stopping fuel injection to the engine when the engine idly rotates upon stopping the vehicle by connecting an electric assist turbocharger obtained by the combination of a turbocharger and a motor to an intake and exhaust system of the engine. The idle-stop control unit is configured to restart the engine by resuming the fuel injection to the engine while operating a motor upon detecting the reaccelerating operation during the idle-stop control.Type: ApplicationFiled: October 26, 2011Publication date: August 22, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130213036Abstract: An engine system for ensuring a sufficient boost pressure during engine braking and improving a braking force of a compression release brake. The system includes: a compression release brake device that operates a compression release brake to obtain a braking force during engine braking by forcibly opening an exhaust valve and releasing a compressive pressure near a compression top dead center of an engine; a power-assisted turbocharger including a turbine disposed on an exhaust passage of the engine and driven by exhaust, a compressor disposed on an intake passage and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor; and an electric motor control unit that drives the electric motor when the compressor release brake is operated.Type: ApplicationFiled: October 24, 2011Publication date: August 22, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130213037Abstract: A turbocharger system for simultaneously improving a fuel efficiency and obtaining a satisfactory hill start performance due to a downsized engine. The system includes an electric assist turbocharger which includes a turbine disposed in an exhaust passage of an engine and driven by exhaust gas, a compressor disposed in an intake passage and driven by a rotational torque of the turbine, and an electric motor assisting a driving force of the compressor and an electric motor control unit which drives the electric motor when detecting a start operation at a sloping road.Type: ApplicationFiled: October 24, 2011Publication date: August 22, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130216408Abstract: A turbocharger system for achieving both improvement of fuel efficiency by engine downsizing and excellent shock loading resistance. The system includes: a power-assisted turbocharger mounted on a vehicle having an accessory and including a turbine disposed on an exhaust passage of an engine and driven by exhaust, a compressor disposed on an intake passage and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor; and an electric motor control unit that drives the electric motor when the accessory is being driven.Type: ApplicationFiled: October 26, 2011Publication date: August 22, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130209291Abstract: A turbocharger system includes: a high-pressure stage turbocharger including a high-pressure stage turbine disposed on an exhaust passage and driven by exhaust, and a high-pressure stage compressor disposed on an intake passage and driven by a rotational torque of the high-pressure stage turbine; and a low-pressure stage turbocharger including a low-pressure stage turbine disposed on the exhaust passage of a more downstream side than the high-pressure stage turbine and driven by exhaust, and a low-pressure stage compressor disposed on the intake passage of a more upstream side than the high-pressure stage compressor and driven by a rotational torque of the low-pressure stage turbine, wherein the high-pressure stage turbocharger includes an electric motor that assists a drive force of the high-pressure stage compressor.Type: ApplicationFiled: October 26, 2011Publication date: August 15, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita
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Publication number: 20130199179Abstract: A turbocharger system for ensuring a sufficient exhaust gas recirculation (“EGR”) amount in all operating conditions, and reducing NOx emission from an engine. The system includes an EGR controller that re-circulates a part of exhaust gas discharged from the engine to an intake side. The turbocharger is a power-assisted turbocharger including an electric motor that assists a drive force of a compressor. The EGR controller controls an amount of exhaust gas recirculated to the intake side so as to inhibit the generation of NOx regardless of an amount of oxygen necessary for combustion of the engine. An electric motor control unit drives the electric motor, by the control of the EGR controller, when the amount of oxygen necessary for the combustion of the engine is deficient.Type: ApplicationFiled: October 24, 2011Publication date: August 8, 2013Inventors: Isao Kitsukawa, Tomohiro Sugano, Yoshiyuki Abe, Haruyo Kimura, Akira Iijima, Naoki Ishibashi, Syougo Sakashita