Patents by Inventor Eiji Maeda
Eiji Maeda 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: 11485352Abstract: A vehicle control device controls a hybrid vehicle including: an internal combustion engine having an EGR device; an electric drive device that drives the vehicle and performs an engine-based power generation; a power storage device; and a travel route acquisition device. The vehicle include an EV drive mode and an HV drive mode. The vehicle control device is configured to: where the vehicle is started under a cold condition, calculate, based on the travel route information, an average vehicle driving power in a vehicle running section under a warm condition after the start; and limit the amount of power generated by the engine-based power generation in the cold condition to be smaller when the calculated average vehicle driving power is high than when it is low, and, during the HV drive mode after a transition to the warm condition, execute the engine-based power generation accompanied by the EGR.Type: GrantFiled: December 16, 2020Date of Patent: November 1, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji Maeda
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Patent number: 11358581Abstract: A control system for a hybrid vehicle configured to reduce fuel consumption. A controller is configured to execute a first determination to determine that a required power is less than a reference power, and a second determination to determine that a condition to start an engine is satisfied. If the answers of the first determination and the second determination are YES, a target power of the engine is set to a predetermined power which is greater than the required power, and which can be generated by consuming smaller amount of fuel. Then, the generator is driven by the engine being operated to achieve the predetermined power, and an electric power generated by the generator to be accumulated in a battery is set to a value calculated based on a difference between the target power and the required power.Type: GrantFiled: June 20, 2019Date of Patent: June 14, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji Maeda
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Patent number: 11131013Abstract: The purpose of the present invention is to enhance the creep characteristics of an Ni-based alloy. The present invention relates to a Ni-based alloy characterized by having a composition containing, in terms of wt %, 15.00-25.00% Cr, 5.00-15.00% Co, 1.00% to less than 12.00% Mo, 1.50-2.50% Ti, 1.00-2.00% Al, 0.20-1.00% Nb, and 0.0010-0.10% C, and in terms of mass ppm, 10-200 ppm P, 30-250 ppm B, and 30-200 ppm N, the remainder comprising Ni and unavoidable impurities.Type: GrantFiled: February 16, 2018Date of Patent: September 28, 2021Assignee: JAPAN STEEL WORKS M&E, INC.Inventors: Takuya Okawa, Koichi Takasawa, Eiji Maeda, Masato Yoshida
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Publication number: 20210197791Abstract: A vehicle control device controls a hybrid vehicle including: an internal combustion engine having an EGR device; an electric drive device that drives the vehicle and performs an engine-based power generation; a power storage device; and a travel route acquisition device. The vehicle include an EV drive mode and an HV drive mode. The vehicle control device is configured to: where the vehicle is started under a cold condition, calculate, based on the travel route information, an average vehicle driving power in a vehicle running section under a warm condition after the start; and limit the amount of power generated by the engine-based power generation in the cold condition to be smaller when the calculated average vehicle driving power is high than when it is low, and, during the HV drive mode after a transition to the warm condition, execute the engine-based power generation accompanied by the EGR.Type: ApplicationFiled: December 16, 2020Publication date: July 1, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji MAEDA
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Patent number: 10850624Abstract: A vehicle includes an engine, a motor generator, a battery, and an ECU, and is configured to selectively perform EV running and engine running. When requested power is smaller than reference power, ECU calculates an engine fuel consumption ratio h1 when the engine outputs power resulting from addition of optimal charging power for the battery to the requested power, and determines whether the engine fuel consumption ratio h1 is larger than an EV criterion line resulting from addition of a margin K to a battery equivalent fuel consumption ratio F. When the engine fuel consumption ratio h1 is larger than the EV criterion line, ECU selects EV running, and otherwise selects engine running. The ECU calculates the margin K by referring to an F?K map which defines correspondence between the battery equivalent fuel consumption ratio F and the margin K with which an SOC is converged to a target range.Type: GrantFiled: May 7, 2018Date of Patent: December 1, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidehiro Oba, Eiji Maeda
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Publication number: 20200239993Abstract: The purpose of the present invention is to enhance the creep characteristics of an Ni-based alloy. The present invention relates to a Ni-based alloy characterized by having a composition containing, in terms of wt %, 15.00-25.00% Cr, 5.00-15.00% Co, 1.00% to less than 12.00% Mo, 1.50-2.50% Ti, 1.00-2.00% Al, 0.20-1.00% Nb, and 0.0010-0.10% C, and in terms of mass ppm, 10-200 ppm P, 30-250 ppm B, and 30-200 ppm N, the remainder comprising Ni and unavoidable impurities.Type: ApplicationFiled: February 16, 2018Publication date: July 30, 2020Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Takuya OKAWA, Koichi TAKASAWA, Eiji MAEDA, Masato YOSHIDA
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Patent number: 10717428Abstract: A control system comprises a driving mode setting part 41 setting a driving mode, a fuel consumption rate calculating part 42 calculating a first fuel consumption rate when outputting power for driving use and a second fuel consumption rate when storing electric power in the battery, a fuel consumption rate correcting part 43 and a driving region judging part 44. The driving mode setting part sets the driving mode to the EV mode when the first fuel consumption rate is higher than the second fuel consumption rate and sets the driving mode to the engine operating mode when the first fuel consumption rate is lower than the second fuel consumption rate. The fuel consumption rate correcting part performs at least one of first correction raising the first fuel consumption rate and second correction lowering the second fuel consumption rate if the hybrid vehicle is driving through a residential neighborhood.Type: GrantFiled: December 12, 2018Date of Patent: July 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji Maeda
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Publication number: 20200070805Abstract: A control system for a hybrid vehicle configured to reduce fuel consumption. A controller is configured to execute a first determination to determine that a required power is less than a reference power, and a second determination to determine that a condition to start an engine is satisfied. If the answers of the first determination and the second determination are YES, a target power of the engine is set to a predetermined power which is greater than the required power, and which can be generated by consuming smaller amount of fuel. Then, the generator is driven by the engine being operated to achieve the predetermined power, and an electric power generated by the generator to be accumulated in a battery is set to a value calculated based on a difference between the target power and the required power.Type: ApplicationFiled: June 20, 2019Publication date: March 5, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji MAEDA
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Publication number: 20190202430Abstract: A control system comprises a driving mode setting part 41 setting a driving mode, a fuel consumption rate calculating part 42 calculating a first fuel consumption rate when outputting power for driving use and a second fuel consumption rate when storing electric power in the battery, a fuel consumption rate correcting part 43 and a driving region judging part 44. The driving mode setting part sets the driving mode to the EV mode when the first fuel consumption rate is higher than the second fuel consumption rate and sets the driving mode to the engine operating mode when the first fuel consumption rate is lower than the second fuel consumption rate. The fuel consumption rate correcting part performs at least one of first correction raising the first fuel consumption rate and second correction lowering the second fuel consumption rate if the hybrid vehicle is driving through a residential neighborhood.Type: ApplicationFiled: December 12, 2018Publication date: July 4, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji MAEDA
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Patent number: 10221473Abstract: A subject for the invention is to diminish the occurrence of streak-type segregation in producing a material comprising a Ni-based superalloy. The invention relates to a Ni-based superalloy having excellent unsusceptibility to segregation, characterized by comprising: 0.005 to 0.15 mass % of C; 8 to 22 mass % of Cr; 5 to 30 mass % of Co; equal or greater than 1 and less than 9 mass % of Mo; 5 to 21 mass % of W; 0.1 to 2.0 mass % of Al; 0.3 to 2.5 mass % of Ti; up to 0.015 mass % of B; and up to 0.01 mass % of Mg, with the remainder comprising Ni and unavoidable impurities.Type: GrantFiled: October 19, 2015Date of Patent: March 5, 2019Assignees: THE JAPAN STEEL WORKS, LTD., MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Ohsaki, Tatsuya Takahashi, Koji Kajikawa, Eiji Maeda, Yoshikuni Kadoya, Ryuichi Yamamoto, Takashi Nakano
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Publication number: 20190001958Abstract: A vehicle includes an engine, a motor generator, a battery, and an ECU, and is configured to selectively perform EV running and engine running. When requested power is smaller than reference power, ECU calculates an engine fuel consumption ratio h1 when the engine outputs power resulting from addition of optimal charging power for the battery to the requested power, and determines whether the engine fuel consumption ratio h1 is larger than an EV criterion line resulting from addition of a margin K to a battery equivalent fuel consumption ratio F. When the engine fuel consumption ratio h1 is larger than the EV criterion line, ECU selects EV running, and otherwise selects engine running. The ECU calculates the margin K by referring to an F?K map which defines correspondence between the battery equivalent fuel consumption ratio F and the margin K with which an SOC is converged to a target range.Type: ApplicationFiled: May 7, 2018Publication date: January 3, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidehiro OBA, Eiji MAEDA
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Publication number: 20180236996Abstract: A hybrid vehicle includes: an engine; a rotating electric machine; a battery; and a controller that is configured to be capable of calculating a battery equivalent fuel efficiency. While the engine is in operation, the controller searches charge/discharge power to/from the battery at which a vehicle fuel consumption amount that is calculated in consideration of a fuel consumption amount in the engine and an equivalent fuel consumption amount that is determined by a product of the battery equivalent fuel efficiency and the charge/discharge power is minimum, and causes the engine to output a value that is calculated by adding the searched charge/discharge power to requested power from a user.Type: ApplicationFiled: January 26, 2018Publication date: August 23, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidehiro Oba, Eiji Maeda
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Patent number: 9856553Abstract: A subject for the invention is to diminish the occurrence of streak-type segregation in producing a material comprising a Ni-based superalloy. The invention relates to a Ni-based superalloy having excellent unsusceptibility to segregation, characterized by comprising: 0.005 to 0.15 mass % of C; 8 to 22 mass % of Cr; 5 to 30 mass % of Co; equal or greater than 1 and less than 9 mass % of Mo; 5 to 21 mass % of W; 0.1 to 2.0 mass % of Al; 0.3 to 2.5 mass % of Ti; up to 0.015 mass % of B; and up to 0.01 mass % of Mg, with the remainder comprising Ni and unavoidable impurities.Type: GrantFiled: February 13, 2009Date of Patent: January 2, 2018Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Satoru Ohsaki, Tatsuya Takahashi, Koji Kajikawa, Eiji Maeda, Yoshikuni Kadoya, Ryuichi Yamamoto, Takashi Nakano
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Patent number: 9604432Abstract: The invention is to provide a coating structure material excellent in Mg corrosion resistance, which has resistance to corrosion caused by molten Mg and molten Mg alloys. The invention relates to a coating structure material including an Ni—Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni—Co-base alloy substrate, wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less.Type: GrantFiled: September 24, 2013Date of Patent: March 28, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Kouichi Takasawa, Eiji Maeda, Shinji Tanaka, Tatsuya Takahashi
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Patent number: 9415767Abstract: A travel control device is applied to a hybrid vehicle which includes a planetary gear mechanism capable of distributing power of an internal combustion engine to a first MG and an output part, and a second MG capable of outputting power to the output part. The travel control device allows the vehicle to travel in an acceleration-deceleration travel mode in which, when a high-speed steady travel condition is established during travel of the vehicle, acceleration travel for accelerating the vehicle with power output from the internal combustion engine and coasting travel for allowing the vehicle to coast with the internal combustion engine in a stop state are alternately repeated within a target vehicle speed range. In the travel control device, given power is output from the internal combustion engine at the time of acceleration travel, and the internal combustion engine is controlled such that the vehicle is accelerated at an acceleration such that the rotation speed of the first MG becomes zero.Type: GrantFiled: February 7, 2013Date of Patent: August 16, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji Maeda
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Publication number: 20160101772Abstract: A travel control apparatus applied in a hybrid vehicle is provided with: a planetary gear mechanism capable of distributing power of an internal combustion engine to a first MG and an output unit, and a second MG capable of outputting power to the output unit. When a requested output to the internal combustion engine is zero, rotational speed control for controlling the first MG is executed so that the rotational speed of the internal combustion engine is higher than zero when the speed of the vehicle is equal to or greater than a predetermined control determination speed, and the execution of rotational speed control is prohibited when the speed of the vehicle is less than the control determination speed.Type: ApplicationFiled: April 10, 2013Publication date: April 14, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji MAEDA
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Publication number: 20160040277Abstract: A subject for the invention is to diminish the occurrence of streak-type segregation in producing a material comprising a Ni-based superalloy. The invention relates to a Ni-based superalloy having excellent unsusceptibility to segregation, characterized by comprising: 0.005 to 0.15 mass % of C; 8 to 22 mass % of Cr; 5 to 30 mass % of Co; equal or greater than 1 and less than 9 mass % of Mo; 5 to 21 mass % of W; 0.1 to 2.0 mass % of Al; 0.3 to 2.5 mass % of Ti; up to 0.015 mass % of B; and up to 0.01 mass % of Mg, with the remainder comprising Ni and unavoidable impurities.Type: ApplicationFiled: October 19, 2015Publication date: February 11, 2016Applicants: THE JAPAN STEEL WORKS, LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoru OHSAKI, Tatsuya TAKAHASHI, Koji KAJIKAWA, Eiji MAEDA, Yoshikuni KADOYA, Ryuichi YAMAMOTO, Takashi NAKANO
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Patent number: 9240666Abstract: An optical amplification device includes: an optical module that outputs an amplified light; and a controller that makes the optical module emit a light when an emission command is input into the controller, wherein the controller cancels an inputting of the emission command until a predetermined time passes, when a protection for forbidding a light emission of the optical module is canceled.Type: GrantFiled: April 21, 2014Date of Patent: January 19, 2016Assignee: FUJITSU LIMITEDInventors: Mitsuya Kawashita, Jinlin Zhang, Eiji Maeda, Shota Mori
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Publication number: 20150367833Abstract: A travel control device is applied to a hybrid vehicle which includes a planetary gear mechanism capable of distributing power of an internal combustion engine to a first MG and an output part, and a second MG capable of outputting power to the output part. The travel control device allows the vehicle to travel in an acceleration-deceleration travel mode in which, when a high-speed steady travel condition is established during travel of the vehicle, acceleration travel for accelerating the vehicle with power output from the internal combustion engine and coasting travel for allowing the vehicle to coast with the internal combustion engine in a stop state are alternately repeated within a target vehicle speed range. In the travel control device, given power is output from the internal combustion engine at the time of acceleration travel, and the internal combustion engine is controlled such that the vehicle is accelerated at an acceleration such that the rotation speed of the first MG becomes zero.Type: ApplicationFiled: February 7, 2013Publication date: December 24, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Eiji MAEDA
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Publication number: 20150225827Abstract: An object is to provide a Ni-based alloy having high strength and excellent hydrogen embrittlement resistance even in a high-temperature and high-pressure environment and particularly capable of being used for an ammonothermal pressure vessel and the like. The present invention relates to a Ni-based alloy including, in terms of mass ratios, Fe: 30 to 40%, Cr: 14 to 16%, Ti: 1.2 to 1.7%, Al: 1.1 to 1.5%, Nb: 1.9 to 2.7%, and P: 40 to 150 ppm, with the remainder being Ni and unavoidable impurities.Type: ApplicationFiled: August 22, 2013Publication date: August 13, 2015Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Kouichi Takasawa, Eiji Maeda, Shinya Sato, Takashi Hatano, Tatsuya Takahashi