Patents by Inventor Daisuke Tanaka

Daisuke Tanaka 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: 10794317
    Abstract: A control device for a compression-ignition engine in which partial compression-ignition combustion including spark ignition (SI) combustion performed by combusting a portion of a mixture gas inside a cylinder by spark-ignition followed by compression ignition (CI) combustion performed by causing the remaining mixture gas to self-ignite is executed at least within a part of an engine operating range is provided, which includes a detector configured to detect a given parameter that changes as combustion progresses inside the cylinder, an A/F (air-fuel ratio) controller configured to change an air-fuel ratio of air to fuel introduced into the cylinder, and a combustion controller configured to determine combustion stability based on the detected parameter of the detector and control the A/F controller to reduce the air-fuel ratio when it is confirmed that during the partial compression-ignition combustion the combustion stability is low.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: October 6, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Daisuke Tanaka, Yuichiro Tsumura, Kenko Ujihara, Masayoshi Higashio, Hiroki Morimoto
  • Patent number: 10789845
    Abstract: A parking assistance method of the present invention includes detecting an empty parking space around a moving object, displaying a first assistance image indicating a position of the empty parking space on a surrounding image viewed from above the moving object, and setting a parking target using the displayed first assistance image. The parking assistance method includes: determining whether the detected empty parking space meets a display condition for displaying the first assistance image; and displaying the first assistance image in the empty parking space not meeting the display condition when a currently set mode is an adjustable mode that allows an occupant of the moving object to manually adjust the parking target.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: September 29, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuhiro Suzuki, Ko Sato, Daisuke Tanaka, Yasuhiro Sakurai, Ryota Yamanaka, Junya Kobayashi
  • Patent number: 10773613
    Abstract: In a vehicle seat, a second parallel link mechanism is actuated in order to adjust an vertical position of a seat body with respect to a vehicle body, such that a first parallel link mechanism is moved up or down together with the seat body with respect to the vehicle body. In order to recline a seatback as an integral unit with a seat cushion, the first parallel link mechanism and the second parallel link mechanism are actuated such that an upper link is maintained in a predetermined orientation. The upper link is restricted from rotating relative to the armrest, and so the armrest is also maintained in a predetermined orientation.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 15, 2020
    Assignee: NHK SPRING Co., Ltd.
    Inventors: Takeshi Nakamura, Kenichi Katsube, Shu Kondou, Daisuke Tanaka
  • Patent number: 10772184
    Abstract: An ignition device ignites a mixture of air and fuel gas by plasma to generate an initial flame. The ignition device includes a spark plug having an inner conductor, a cylindrical outer conductor that holds the inner conductor inside, and a dielectric provided between the inner conductor and the outer conductor, and the spark plug configured to emit an electromagnetic wave to a plasma formation space between the inner conductor and the outer conductor to generate a plasma. The ignition device includes an electromagnetic wave power supply that generates the electromagnetic wave by inputting the electromagnetic wave power Ps to the spark plug and a power supply control unit that controls the electromagnetic wave power supply. The electromagnetic wave power supply is configured to generate high frequency power at a number of different frequencies.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: September 8, 2020
    Assignees: DENSO CORPORATION, PLASMA APPLICATIONS CO., LTD., TOKYO KEIKI INC.
    Inventors: Daisuke Tanaka, Fumiaki Aoki, Akimitsu Sugiura, Masashi Kando, Jan Husarik, Hiroshi Okajima
  • Patent number: 10767592
    Abstract: A failure diagnosis device for an in-cylinder pressure sensor includes an in-cylinder pressure sensor, and a controller comprised of circuitry configured to execute a diagnosis module into which a signal of the in-cylinder pressure sensor is inputted and configured to diagnose a failure of the sensor based on the signal. The diagnosis module includes a reading module configured to read the signals of the in-cylinder pressure sensor at a first timing that is a timing retarded by a specific crank angle from a compression top dead center, and at a second timing that is a timing advanced by the specific crank angle from the compression top dead center, and a failure determining module configured to determine that the in-cylinder pressure sensor has failed when the failure determining module determines that a difference between signal values at the first timing and at the second timing exceeds a predefined threshold.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: September 8, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Shoji Fujiwara, Hidetoshi Hashimoto, Takuji Okumura, Shigeru Nakagawa, Yasushi Torii, Masayuki Kinoshita, Yuichiro Tsumura, Daisuke Tanaka, Taiki Maiguma
  • Patent number: 10767612
    Abstract: A control device for a compression-ignition (CI) engine in which partial CI combustion including spark ignition (SI) combustion performed by combusting a portion of mixture gas inside a cylinder by spark ignition followed by CI combustion performed by causing the rest of the mixture gas inside the cylinder to self-ignite is executed within a part of an engine operating range, is provided, including an EGR (exhaust gas recirculation) controller configured to change an EGR ratio, and a combustion controller configured to control the EGR controller during the partial compression-ignition combustion to switch a combustion mode between first and second modes in which the EGR ratio is higher than the first mode. After the first mode is switched to the second mode, if a condition is satisfied, the combustion controller causes the resumption to the first mode after a given period of time has elapsed from the switching.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 8, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Daisuke Tanaka, Yuichiro Tsumura, Kenko Ujihara, Yuto Matsushima, Masayoshi Higashio, Hiroki Morimoto
  • Patent number: 10731589
    Abstract: A control device for an on-board compression-ignition engine in which partial compression-ignition combustion including spark ignition (SI) combustion performed by combusting a portion of mixture gas inside a cylinder by spark ignition followed by compression ignition (CI) combustion performed by causing the rest of the mixture gas inside the cylinder to self-ignite is executed within at least a part of an operating range of the engine, is provided. The device includes a detector configured to detect a parameter related to noise caused by the combustion inside the cylinder, and a combustion controller configured to control the combustion inside the cylinder during the partial compression-ignition combustion based on a combustion noise index value identified by the detected parameter of the detector and a given reference value defined as an upper limit of the combustion noise index value, the reference value increasing as a vehicle speed increases.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 4, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Daisuke Tanaka, Taichi Masuoka
  • Patent number: 10720760
    Abstract: A spark plug for an internal combustion engine includes a housing, an insulator, and a center electrode. The center electrode includes an inside electrode portion and an outside electrode portion. The housing includes a ground electrode projecting from a distal end portion of the housing toward the distal end side of the plug at a part in a plug circumferential direction. The outside electrode portion projects along a surface of the insulator tip in a direction away from a boundary with the inside electrode portion and includes a projection, which is capable of causing an electrical discharge between the ground electrode and the outside electrode portion. The projection is formed in a region in the plug circumferential direction. The projection and the ground electrode are located at positions different from each other in the plug circumferential direction.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: July 21, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yuuki Kawata, Fumiaki Aoki, Daisuke Tanaka, Ryota Wakasugi, Akimitsu Sugiura, Kanechiyo Terada, Tetsuya Miwa
  • Patent number: 10718310
    Abstract: An ignition apparatus includes a plasma device, a first circuit, a second circuit, and a control unit. The plasma device produces a plasma discharge in an air-fuel mixture before an arc discharge is produced. The first circuit causes an ignition plug to start the arc discharge. The second circuit energizes a primary coil in a direction opposite to the direction of the energization by the first circuit during the arc discharge, to maintain energization of the secondary coil in the same direction as the direction of the energization started by an operation of the first circuit, to cause continuation of the arc discharge. The control unit controls operations of the first circuit, the second circuit, and the plasma device.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: July 21, 2020
    Assignees: DENSO CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Masaaki Kono, Daisuke Tanaka, Takaaki Sato, Akimitsu Sugiura, Mitsuhiro Tsue, Shinji Nakaya
  • Publication number: 20200223326
    Abstract: A vehicle seat is provided including a base section fixed to a floor of a vehicle, a pair of seat sections that are disposed opposing each other as viewed along a seat width direction, that are each supported by the base section so as to be capable of tilting between a horizontal position and an upright position, and that each include plural cushion sections disposed in series and configured to support the body of an occupant, and a hinge mechanism that attaches the pair of seat sections to the base section such that the seat sections are capable of tilting, and that couples the plural cushion sections together such that the cushion sections are capable of swinging about an axis running along the seat width direction.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 16, 2020
    Inventors: Daisuke Tanaka, Kenichi Katsube, Donghyoun Kim, Takuma Oki
  • Publication number: 20200226926
    Abstract: A parking assistance method of the present invention includes detecting an empty parking space around a moving object, displaying a first assistance image indicating a position of the empty parking space on a surrounding image viewed from above the moving object, and setting a parking target using the displayed first assistance image. The parking assistance method includes: determining whether the detected empty parking space meets a display condition for displaying the first assistance image; and displaying the first assistance image in the empty parking space not meeting the display condition when a currently set mode is an adjustable mode that allows an occupant of the moving object to manually adjust the parking target.
    Type: Application
    Filed: July 7, 2017
    Publication date: July 16, 2020
    Inventors: Yasuhiro Suzuki, Ko Sato, Daisuke Tanaka, Yasuhiro Sakurai, Ryota Yamanaka, Junya Kobayashi
  • Patent number: 10697419
    Abstract: An ignition control apparatus applied to an internal combustion engine including a spark plug includes an in-cylinder pressure acquisition section, a frequency signal transmitting section which transmits a frequency signal having a predetermined frequency to a switching element, and a weak discharge generating section which causes the frequency signal to be transmitted during an intake stroke and controls the frequency signal such that a weak discharge is generated at the spark plug a plurality of times. The weak discharge generating section controls the frequency signal so as to cause a duty ratio of the switching element to be changed in accordance with the in-cylinder pressure, such that the frequency of generating weak discharges during a time period in which the frequency signal is transmitted becomes higher than a predetermined frequency.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: June 30, 2020
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Tanaka, Shota Kinoshita, Noriaki Nishio, Satoru Nakayama
  • Publication number: 20200200112
    Abstract: An abnormality diagnosis device of an in-cylinder pressure sensor is provided. The device carries out a performance determination in which a performance quality of the sensor is determined based on an electric signal inputted from the sensor. The device carries out a first determination in which the performance determination is performed at a given timing, a performance recovery in which a given deposit removal control is executed in which a deposit accumulating inside the combustion chamber is removed when the performance quality of the in-cylinder pressure sensor is determined to fall below a given reference value, and a second determination in which the performance determination is carried out again after the performance recovery. In the second determination, the in-cylinder pressure sensor is diagnosed as abnormal when the performance quality of the sensor is determined to fall below the given reference value.
    Type: Application
    Filed: October 25, 2019
    Publication date: June 25, 2020
    Inventors: Shoji Fujiwara, Hidetoshi Hashimoto, Takuji Okumura, Shigeru Nakagawa, Yasushi Torii, Masayuki Kinoshita, Yuichiro Tsumura, Daisuke Tanaka, Taiki Maiguma
  • BAG
    Publication number: 20200198841
    Abstract: To suppress damage such as the formation of holes and wrinkles in laminated bodies constituting a bag. A bag having a storage section includes: laminated bodies that include a sealant film positioned on an inner surface of the bag and at least one plastic film positioned on an outer surface side of the sealant film; and a seal section where inner surfaces of one pair of laminated bodies are joined together. The seal section has an outer edge seal part that is positioned along an outer edge of the bag, and a steam-releasing seal part that is positioned closer to a center point side of the storage section than the outer edge seal part and peels off due to an increase in pressure in the storage section. The steam-releasing seal part peels off when the pressure in the storage section is 130 kPa or lower.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 25, 2020
    Inventors: Daisuke TANAKA, Yasunari IIO, Kaoru WATANABE, Kazuhiro TAKUSHIMA, Kiyoshi TODA, Shiomi NAKAGAWA, Kaeko HAYASHI, Satomi ISHIDA, Keita GOTO, Mariko NAKATSUKA, Koki AKUTSU, Yuki TATSUTA, Hideaki TAKAHASHI
  • Publication number: 20200200078
    Abstract: A combustion control system for an engine mounted on an automobile is provided, which includes an ignition plug, intake and exhaust passages, an EGR passage, an EGR valve, and a control device having a processor which controls the ignition plug and the EGR valve according to an engine operating state and reduces deposit being accumulated inside a combustion chamber. The control device performs a control in which an accumulating amount of the deposit is estimated, and a control in which the deposit is removed when the estimated accumulating amount becomes more than a given setting value. In the deposit removal control, a control of the ignition plug in which a mixture gas is caused to combust by igniting the mixture gas, and a control of the EGR valve in which an amount of exhaust gas introduced into the combustion chamber is decreased, are performed.
    Type: Application
    Filed: October 25, 2019
    Publication date: June 25, 2020
    Inventors: Kenichi Nakashima, Hiroki Tanaka, Yuichiro Tsumura, Daisuke Tanaka, Taiki Maiguma
  • Publication number: 20200190300
    Abstract: A resin molded article including an ethylene vinyl acetate copolymer resin and carbon black as primary components. After the resin molded article is heated from 25 degrees Celsius to 100 degrees Celsius and then cooled to 25 degrees Celsius, the shrinkage factor of the resin molded article at 25 degrees Celsius cooled after heated to 100 degrees Celsius relative to the resin molded article at 25 degrees Celsius before heated is less than or equal to 2.0%.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 18, 2020
    Inventors: Akira Yane, Kento Tsuda, Daisuke Tanaka
  • Publication number: 20200180510
    Abstract: A parking assistance device includes: a sensor-information processing circuit that detects an empty parking space around a host vehicle; a surrounding-image generation circuit that generates a surrounding image that is a view of surroundings of the host vehicle from above; an image display circuit that displays a first assistance image at a position of the empty parking space in the surrounding image, the first assistance image indicating the empty parking space; and a stop determination circuit that determines whether the host vehicle has stopped. In a case where it is determined by the stop determination circuit that the host vehicle has stopped, the image display circuit displays the first assistance image.
    Type: Application
    Filed: July 7, 2017
    Publication date: June 11, 2020
    Inventors: Yasuhiro Suzuki, Ko Sato, Daisuke Tanaka, Yasuhiro Sakurai, Ryota Yamanaka, Junya Kobayashi
  • Patent number: 10677199
    Abstract: An anomaly determination device for an evaporated fuel processing device comprises: an evaporated fuel processing device (60) including a canister (61), a purge passage (62) and a purge valve (66); a first pressure sensor (43) and/or a second pressure sensor (45) for acquiring a purge downstream pressure, a third pressure sensor (53) for acquiring a canister internal pressure, and a PCM (70) that calculates a purge flow rate per unit time based on the purge downstream pressure and an opening degree of the purge valve (66), and calculates an integrated purge flow rate by integrating the purge flow rate, so as to perform an anomaly determination for the evaporated fuel processing device (60) based on the canister internal pressure and the integrated purge flow rate. The PCM (70) uses the canister internal pressure when the integrated purge flow rate becomes a predetermined flow rate or more.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: June 9, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hidetoshi Hashimoto, Daisuke Tanaka, Yusuke Higuchi, Takayuki Kikuchi
  • Patent number: 10661497
    Abstract: An object of the present invention is to provide a heat shrink tube excellent in peelability and transparency, and a method for producing the heat shrink tube. The present invention provides a peelable heat shrink tube comprising a composition containing a melt-processable fluororesin and PTFE, the PTFE lacking a heat history of its melting point or higher after polymerization and having a specific gravity, as measured according to ASTM D4894, of 2.20 or less. The content of the PTFE is 0.05 to 3.0 wt % based on the total weight of the melt-processable fluororesin and the PTFE. The present invention also provides a method for producing the tube which comprises melt-extruding the composition at a temperature lower than the melting point of the PTFE.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 26, 2020
    Assignees: NISSEI ELECTRIC CO., LTD., DUPONT-MITSUI FLUORCHEMICALS CO., LTD.
    Inventors: Hideki Kikuchi, Tetsuto Nakajima, Daisuke Tanaka, Takao Nishio, Etsuya Taki, Hoai-Nam Pham
  • Publication number: 20200160962
    Abstract: The objective of the present invention is to provide a technique which enables analysis to be performed in real-time without taking a control or the like, by performing wavelet transformation at the same time, without pre-processing of a signal. The present invention provides a pain estimating method and device with which pain of an estimation target can be objectively and accurately estimated, and with which the quality and quantity thereof can be classified simply. The present invention provides a method for processing a signal of a target in response to a stimulus, and includes: a) a step of obtaining from the target a signal in response to a stimulus; (b) a step of subjecting the signal to cross correlation processing using part or all of the signal; and (c) a step of calculating a feature quantity of the signal and a coefficient correlated to the stimulus from the processing results obtained in b).
    Type: Application
    Filed: July 30, 2018
    Publication date: May 21, 2020
    Inventors: Aya Nakae, Shunsuke Ishimitsu, Daisuke Tanaka