Patents by Inventor Shinji Takayama

Shinji Takayama 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).

  • Patent number: 11028467
    Abstract: Provided is a metal-based material having a high hardness. A metal-based composite material of the present invention is formed from a sintered body obtained from Ti material powder, Mo material powder, Ni material powder, and ceramics powder, and 0.1 to 9 parts by mass of Ni is contained with respect to 100 parts by mass of the entirety of the metal-based composite material.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 8, 2021
    Assignee: TYK CORPORATION
    Inventors: Sadayasu Takayama, Shinji Kajita, Yukie Kaku
  • Patent number: 11008930
    Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 to allow an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES) and the SPCCI combustion is performed (#13: YES), the ECU 60 prohibits ignition retardation and performs torque reduction for the vehicle attitude control, by fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14). On the other hand, when the SPCCI combustion is not performed (NO in #13), the ECU 60 performs the ignition retardation to attain the torque reduction for the vehicle attitude control (#15).
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: May 18, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shinji Takayama, Takeatsu Ito, Michio Ito, Kenko Ujihara, Daisaku Ogawa, Daisuke Umetsu
  • Patent number: 10995681
    Abstract: A combustion control device for an engine includes a plurality of cylinders, a surge tank disposed in an intake path to the cylinders, an independent intake passage connecting the surge tank and an intake port of each of the cylinders, a fuel injection valve that is disposed for each of the cylinders and that supplies fuel into each of the cylinders, and a control unit that controls a fuel injection amount of each of the fuel injection valves according to an engine operating state. The control unit corrects a target fuel injection amount of each of the cylinders, the target fuel injection amount being determined according to the engine operating state, based on a re-intake correction amount set in each of the cylinders according to a re-intake amount of intake air from the intake port in internal EGR in each of the cylinders.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: May 4, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Masanari Sueoka, Junichi Taga, Hideki Omori, Keiji Maruyama, Tatsuhiro Tokunaga, Takuya Ohura, Toru Miyamoto, Tomohiro Nishida, Kenji Tanimura, Shinji Takayama, Yusuke Kawai, Atsushi Inoue
  • Patent number: 10968856
    Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 in a manner allowing an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES), and the SPCCI combustion is performed (#13: YES), the ECU 60 executes fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14), so as to attain torque reduction for the vehicle attitude control. On the other hand, when the SPCCI combustion is not performed (#13: NO), the ECU 60 executes ignition retardation control of retarding an ignition timing of the spark plug 16 (#15).
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 6, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shinji Takayama, Takeatsu Ito, Michio Ito, Kenko Ujihara, Daisaku Ogawa, Daisuke Umetsu
  • Patent number: 10968845
    Abstract: A control device is provided for a compression ignition engine, which controls so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in a late period of compression stroke or an early period of expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount or more are performed, and fuel is injected at a timing where fuel is present before the preceding ignition inside the combustion chamber. In a high-load side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: April 6, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takuya Ohura, Keiji Maruyama, Toru Miyamoto, Kouji Hadama, Masataka Sumita, Takahiro Izaki, Shinji Takayama
  • Publication number: 20210079869
    Abstract: 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: Application
    Filed: January 16, 2019
    Publication date: March 18, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Shinji TAKAYAMA, Takeatsu ITO, Masahiro NAGOSHI, Yuichiro AKIYA, Yuto MATSUSHIMA, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
  • Publication number: 20210062709
    Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 to allow an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES) and the SPCCI combustion is performed (#13: YES), the ECU 60 prohibits ignition retardation and performs torque reduction for the vehicle attitude control, by fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14). On the other hand, when the SPCCI combustion is not performed (NO in #13), the ECU 60 performs the ignition retardation to attain the torque reduction for the vehicle attitude control (#15).
    Type: Application
    Filed: January 22, 2019
    Publication date: March 4, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Shinji TAKAYAMA, Takeatsu ITO, Michio ITO, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
  • Patent number: 10934990
    Abstract: A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 2, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takuya Ohura, Keiji Maruyama, Toru Miyamoto, Kouji Hadama, Masataka Sumita, Takahiro Izaki, Shinji Takayama
  • Publication number: 20210047978
    Abstract: 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: Application
    Filed: January 16, 2019
    Publication date: February 18, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Shinji TAKAYAMA, Takeatsu ITO, Masahiro NAGOSHI, Yuichiro AKIYA, Yuto MATSUSHIMA, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
  • Patent number: 10876465
    Abstract: An intake-air temperature controlling device is provided, which includes an engine body, an intake passage, a supercharger, a first passage, a second passage, an intake air flow rate adjuster, an intercooler, a pump, and a controller. The controller outputs a control signal to the pump so that coolant is supplied to the intercooler in a first operating range in which the intake air flow rate adjuster at least partially opens the first passage to supply intake air boosted by the supercharger to the engine body, and outputs a control signal to the pump so that the coolant is supplied to the intercooler also in a second operating range in which an engine load is below a given load, and the intake air flow rate adjuster opens the second passage and closes the first passage to supply the intake air to the engine body in a non-boosted state.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: December 29, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Shinichi Hikitani, Hajime Umehara, Naoki Nagano, Tomokuni Kusunoki, Shinji Takayama, Masanobu Koutoku, Toshinori Ueno, Katsuya Murakami
  • Publication number: 20200400090
    Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 in a manner allowing an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES), and the SPCCI combustion is performed (#13: YES), the ECU 60 executes fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14), so as to attain torque reduction for the vehicle attitude control. On the other hand, when the SPCCI combustion is not performed (#13: NO), the ECU 60 executes ignition retardation control of retarding an ignition timing of the spark plug 16 (#15).
    Type: Application
    Filed: January 22, 2019
    Publication date: December 24, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Shinji TAKAYAMA, Takeatsu ITO, Michio ITO, Kenko UJIHARA, Daisaku OGAWA, Daisuke UMETSU
  • Patent number: 10859015
    Abstract: A control system for a compression ignition engine includes a combustion chamber, a throttle valve, an injector, an ignition plug, an EGR system, a sensor device and a controller. The controller includes a first mode module, a second mode module and a changing module configured to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and outputs a signal to the EGR system so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module permits that the second mode module starts the second mode.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: December 8, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Yuto Matsushima, Masayoshi Higashio, Yugou Sunagare, Shinji Takayama, Kenko Ujihara, Yuta Masuda
  • Publication number: 20200362810
    Abstract: A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
    Type: Application
    Filed: February 4, 2020
    Publication date: November 19, 2020
    Inventors: Takuya Ohura, Keiji Maruyama, Toru Miyamoto, Kouji Hadama, Masataka Sumita, Takahiro Izaki, Shinji Takayama
  • Publication number: 20200362778
    Abstract: A control device is provided for a compression ignition engine, which controls so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in a late period of compression stroke or an early period of expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount or more are performed, and fuel is injected at a timing where fuel is present before the preceding ignition inside the combustion chamber. In a high-load side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
    Type: Application
    Filed: February 5, 2020
    Publication date: November 19, 2020
    Inventors: Takuya Ohura, Keiji Maruyama, Toru Miyamoto, Kouji Hadama, Masataka Sumita, Takahiro Izaki, Shinji Takayama
  • Patent number: 10801393
    Abstract: A control system for a compression ignition engine configured to start compression ignition combustion by igniting mixture gas formed by injecting fuel into combustion chambers is provided, which includes combustion chambers each defined in respective cylinders so that displacements of the combustion chambers change by respective pistons reciprocating, a throttle valve, ignition plugs, injectors, a sensor having measuring parts including an atmospheric-pressure detector configured to detect an atmospheric pressure, and configured to measure parameters related to operation of the engine, and a controller. The controller executes a lean compression ignition combustion control in which compression ignition combustion is performed at a given lean air-fuel ratio higher than a stoichiometric air-fuel ratio.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Yuto Matsushima, Masayoshi Higashio, Yugou Sunagare, Shinji Takayama, Kenko Ujihara, Yuta Masuda
  • Publication number: 20200318572
    Abstract: The control apparatus for a compression ignition type engine includes a plurality of cylinder inner pressure sensors that detect pressure in each cylinder, and a combustion control unit. The combustion control unit corrects a target fuel injection amount of each cylinder by an injector based on a deviation between a predicted combustion period that is a period from an ignition timing by an ignition plug to a predetermined mass combustion timing and that is obtained based on a preset combustion model, and an actual combustion period that is a period from the ignition timing by the ignition plug to an actual combustion timing and that is obtained based on cylinder inner pressure, such that the period from the ignition timing by the ignition plug to the predetermined mass combustion timing, which is the timing when fuel having a predetermined mass ratio combusts, is equalized in each cylinder.
    Type: Application
    Filed: March 4, 2020
    Publication date: October 8, 2020
    Inventors: Masanari SUEOKA, Junichi TAGA, Hideki OMORI, Keiji MARUYAMA, Tatsuhiro TOKUNAGA, Takuya OHURA, Toru MIYAMOTO, Tomohiro NISHIDA, Kenji TANIMURA, Shinji TAKAYAMA
  • Publication number: 20200318555
    Abstract: A combustion control device for an engine includes a plurality of cylinders, a surge tank disposed in an intake path to the cylinders, an independent intake passage connecting the surge tank and an intake port of each of the cylinders, a fuel injection valve that is disposed for each of the cylinders and that supplies fuel into each of the cylinders, and a control unit that controls a fuel injection amount of each of the fuel injection valves according to an engine operating state. The control unit corrects a target fuel injection amount of each of the cylinders, the target fuel injection amount being determined according to the engine operating state, based on a re-intake correction amount set in each of the cylinders according to a re-intake amount of intake air from the intake port in internal EGR in each of the cylinders.
    Type: Application
    Filed: March 4, 2020
    Publication date: October 8, 2020
    Inventors: Masanari SUEOKA, Junichi TAGA, Hideki OMORI, Keiji MARUYAMA, Tatsuhiro TOKUNAGA, Takuya OHURA, Toru MIYAMOTO, Tomohiro NISHIDA, Kenji TANIMURA, Shinji TAKAYAMA, Yusuke KAWAI, Atsushi INOUE
  • Patent number: 10794316
    Abstract: A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition, a swirl control valve, a sensor and a controller. The controller is configured to execute a first mode module, a second mode module, and a changing module to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio, and outputs a signal to the swirl control valve so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module causes the second mode module to start the second mode.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: October 6, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Yuto Matsushima, Masayoshi Higashio, Yugou Sunagare, Shinji Takayama, Kenko Ujihara, Yuta Masuda
  • Publication number: 20200208567
    Abstract: An intake-air temperature controlling device is provided, which includes an engine body, an intake passage, a supercharger, a first passage, a second passage, an intake air flow rate adjuster, an intercooler, a pump, and a controller. The controller outputs a control signal to the pump so that coolant is supplied to the intercooler in a first operating range in which the intake air flow rate adjuster at least partially opens the first passage to supply intake air boosted by the supercharger to the engine body, and outputs a control signal to the pump so that the coolant is supplied to the intercooler also in a second operating range in which an engine load is below a given load, and the intake air flow rate adjuster opens the second passage and closes the first passage to supply the intake air to the engine body in a non-boosted state.
    Type: Application
    Filed: November 7, 2019
    Publication date: July 2, 2020
    Inventors: Shinichi Hikitani, Hajime Umehara, Naoki Nagano, Tomokuni Kusunoki, Shinji Takayama, Masanobu Koutoku, Toshinori Ueno, Katsuya Murakami
  • Patent number: 10663317
    Abstract: Provided is a map display system including: a destination acquiring section which acquires a destination specified on a map displayed on the display section; a position acquiring section which acquires a starting position of the map when the destination is specified and an ending position of the map which allows a travel route to be displayed; and a display control section which displays so that the position on the display section gradually moves from the starting position to the ending position, acquires a starting scale of the map when the destination is specified and an ending scale of the map which allows display of the entire proposed travel route, and gradually changes a scale of the map displayed from the starting scale to the ending scale during movement, in which the position of the map displayed gradually moves from the starting position to the ending position.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 26, 2020
    Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji Takayama, Toru Imai, Kazunori Watanabe