Patents Assigned to Denso Corporation
  • Patent number: 10352842
    Abstract: A particulate matter detection element 1 includes paired detection electrodes 12 for detecting particulate matter contained in exhaust gas discharged from an internal combustion engine, and insulating member 13 made of electrically insulating material. In the particulate matter detection element 1, at least part of the paired detection electrodes 12 is exposed from the insulating member 13 in the direction perpendicular to the lamination direction of the paired detection electrodes 1, to cause part of the particulate matter to deposit thereon. The surface roughness of at least the insulating member disposed between the paired detection electrodes is between 0.8 ?m and 8.0 ?m in 10-point average roughness.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kazuhiko Koike, Hironobu Shimokawa, Masayuki Tamura, Go Miyagawa, Tomotaka Mouri
  • Patent number: 10352601
    Abstract: A refrigerant evaporator includes: a first heat exchange part in which refrigerant flows to exchange heat with fluid to be cooled; a second heat exchange part arranged to oppose the first heat exchange part; a first tank arranged below the first heat exchange part to distribute the refrigerant to the first heat exchange part; a second tank arranged below the second heat exchange part to collect the refrigerant flowing through the second heat exchange part; and a third tank joined to the first tank and the second tank by brazing. A projection part is formed at one of joint portions between the first tank and the third tank. An insertion part is formed at the other of the joint portions between the first tank and the third tank, and the projection part is inserted in the insertion part.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventors: Masakazu Morimoto, Eiichi Torigoe, Naohisa Ishizaka
  • Patent number: 10353063
    Abstract: A radar apparatus includes a targeting unit that irradiates a radar wave and recognizes a detection subject using a reflected wave thereof. The targeting unit extracts, as a target, a peak that is confirmed to have historical connection over measurement cycles equal to or more than a predetermined targeting threshold, from peaks extracted from a power spectrum generated by frequency analysis. A rainy-weather determining unit determines that weather is rainy when a number of erroneous detections is greater than a predetermined rainy-weather determination threshold. The number of erroneous detections is a number of peaks that have been detected in a previous measurement cycle or earlier by the targeting unit and are not confirmed to have historical connection to a peak detected in a current measurement cycle.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventors: Mai Sakamoto, Koichiro Suzuki
  • Patent number: 10353051
    Abstract: An apparatus for detecting axial misalignment of a beam sensor calculates, based on a result of first target recognition tasks by a beam recognition unit and a result of second target recognition tasks by an image recognition unit, a percentage of the number of times at least one preceding vehicle, which is running in front of an own vehicle, is recognized by the pair of the first and second target recognition tasks to the number of times the at least one preceding vehicle is recognized by at least the image recognition task. The apparatus detects misalignment of the beam axis of the beam sensor in the vertical plane including the beam axis of the beam sensor in accordance with the calculated percentage.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventor: Ryo Takaki
  • Publication number: 20190211785
    Abstract: A fuel supply device includes a surface level detection device that detects a surface level of fuel through use of a float. A supply main body is placed in a fuel tank through an insertion opening and supplies the fuel to an outside. A surface level detection unit, which includes the float, is rotatable relative to the supply main body, and a rotational range of the surface level detection unit is set to include at least an inserting direction of the supply main body. A distal end part of the surface level detection unit, which is furthermost from an imaginary rotational center axis in the surface level detection unit, is placed on an upper side of an imaginary plane, which includes the imaginary rotational center axis and a center of gravity of the surface level detection unit, in a rotational direction of the surface level detection unit.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventors: Takashi AKIBA, Rui ADACHI, Norihiro HAYASHI
  • Publication number: 20190210643
    Abstract: A detection ECU detects left and right lane lines that define a driving lane from an image captured by an in-vehicle camera, by detecting a roadside as a side of a road where the own vehicle travels, from information of reflected waves received from a radar device. The detection ECU determines whether an estimated width indicating the width of a detected roadside and a detected lane line on a roadside side is narrower than the predetermined width. When the detection ECU determines that the estimated width is narrower than the predetermined width, it sets the predetermined position to be a position distant from the lane line on a roadside side in the estimated driving lane, than when the estimated width is determined not to be narrower than the predetermined width.
    Type: Application
    Filed: June 30, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventor: Yusuke MATSUMOTO
  • Publication number: 20190210476
    Abstract: A control apparatus is applied to a vehicle that drives using electric power stored in a storage battery. In the control apparatus, a charging unit charges a storage battery with electric power supplied from a power supply apparatus provided outside of the vehicle via a power receiving unit provided in the vehicle. The vehicle control unit controls an own vehicle to make the own vehicle automatically exit a power supply position of the power supply apparatus when charging is ended. A completion condition determining unit determines whether a predetermined charging completion condition is met. An exit condition determining unit determines whether an exit condition that differs from the charging completion condition is met. The charging unit ends charging when the charging completion condition is determined to be met or the exit condition is determined to be met.
    Type: Application
    Filed: January 8, 2019
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventor: Tomomi HASE
  • Publication number: 20190213887
    Abstract: A target pedestrian who is present within a range of a predetermined distance from a roadway is detected. Whether or not the target pedestrian has gazed at a crossing destination and whether or not the target pedestrian has performed a safety confirmation regarding vehicles traveling on the roadway are determined based on a gaze direction of the target pedestrian. As a result, when the target pedestrian has performed one action of either of gazing at the crossing destination and the safety confirmation, and then performed the other action within a predetermined amount of time, the target pedestrian is detected as a pre-crossing pedestrian who has an intention to cross the roadway. Consequently, a pedestrian who is attempting to cross the roadway can be accurately detected at a stage before the pedestrian actually starts crossing.
    Type: Application
    Filed: June 5, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventors: Shinya KITAYAMA, Hirokazu OYABU, Masaaki HIROSE, Toshiyuki KONDO, Tadashi KAMADA
  • Publication number: 20190212430
    Abstract: A dual-frequency CW processing unit (12) calculates an observation-point orientation of an observation point. An FMCW processing unit (11) calculates at least a power spectrum of a beat signal, which has been generated based on radar waves that have come from the calculated observation-point orientation, in terms of an up-modulation time interval and a down-modulation time interval (termed orientation power spectrum hereinafter). The FMCW processing unit (11) shifts the orientation power spectra of the up- and down-modulation time intervals to positive and negative directions, respectively, by an amount corresponding to a Doppler shift frequency. The FMCW processing unit (11) calculates a differential power spectrum by differentiating the orientation power spectra of the shifted up- and down-modulation time intervals, and detects a peak frequency where intensity is maximum.
    Type: Application
    Filed: July 7, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventors: Yusuke AKAMINE, Mitsuyasu MATSUURA, Yasuyuki MIYAKE
  • Publication number: 20190214791
    Abstract: A spark plug for an internal combustion engine that can improve bonding strength between a center electrode and a conductive glass is provided. The spark plug includes a housing, an insulator, a center electrode, a ground electrode, and a conductive glass. The center electrode has a locking portion that is locked from a base end side to a step portion formed on an inner peripheral surface of the insulator, and an electrode head that is closer to the base end side than the locking portion is. A concave portion is partially formed on the tip end surface of the electrode head. A concave contour, which is an outer peripheral contour of the concave portion when viewed in a plug axial direction, forms a closed curve which is spaced apart from a head contour, which is an outer peripheral contour of the base end surface of the electrode head, and surrounds a center axis (B) of the center electrode.
    Type: Application
    Filed: March 17, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventors: Yuji KAJI, Koji YAMANAKA
  • Publication number: 20190210590
    Abstract: An engine control apparatus is applied to a system including rotating electrical machine, a battery connected to the rotating electrical machine via a power conversion circuit, and an electric load. The engine control apparatus determines that engine speed is within a predetermined rotation speed range including at least a resonance range of an engine during a rotation drop period while engine speed drops to zero after engine combustion is stopped, and, in the case where it is determined that engine speed is within predetermined rotation speed range, selectively performs one of first rotation drop processing of increasing reduction rate of engine speed by regenerative power generation of the rotating electrical machine and second rotation drop processing of increasing reduction rate of engine speed by causing rotating electrical machine to perform power driving on an inverse rotation side. At a rotation drop control unit the first rotation drop processing is performed.
    Type: Application
    Filed: April 27, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventor: Shogo HOSHINO
  • Publication number: 20190214795
    Abstract: An ignition plug for an internal combustion engine includes an electrode protrusion that protrudes from an electrode base material of a ground electrode toward a discharge gap. The electrode protrusion has a base part that is integrated with the electrode base material and a cover part that is joined to the base part and faces the discharge gap. The base part has an end surface facing a protrusion direction of the base part and a side peripheral surface. An outer edge of the end surface has a curved surface. The cover part is formed from a precious metal or a precious metal alloy having a lower linear expansion coefficient than that of a material for forming the base part and covers at least a part of the side peripheral surface and the end surface of the base part. While the ignition plug is attached to an internal combustion engine and the electrode protrusion is heated and then cooled, a projection is formed on an outer surface of a portion covering the side peripheral surface of the base part.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventors: Masayuki TAMURA, Nobuo ABE, Masamichi SHIBATA
  • Publication number: 20190214894
    Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and an armature coil wound on the stator core. The rotor is arranged radially inside the stator to radially face the stator. The rotor includes: a field core having a plurality of magnetic pole portions for respectively forming a plurality of magnetic poles the polarities of which are alternately different in a circumferential direction; a field coil wound on the field core; and a tubular short-circuiting member that is arranged radially outside the magnetic pole portions to cover radially outer surfaces of the magnetic pole portions and magnetically connects each circumferentially-adjacent pair of the magnetic pole portions. Moreover, two axial end portions of the short-circuiting member protrude axially outward respectively from two axial ends of the stator core.
    Type: Application
    Filed: September 11, 2017
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventor: Yuuki TAKAHASHI
  • Publication number: 20190215992
    Abstract: A rotating electric machine includes a machine main body, a frame member and a rectifier. The machine main body is configured to generate alternating current. The frame member holds the machine main body. The rectifier is provided axially outside the frame member and has a rectification circuit configured to rectify the alternating current generated in the machine main body into direct current. The rectifier includes first and second heat sinks that are located to axially overlap each other, first rectifying elements mounted to the first heat sink and constituting an upper arm of the rectification circuit, and second rectifying elements mounted to the second heat sink and constituting a lower arm of the rectification circuit. The second heat sink is located closer than the first heat sink to the frame member. The surface area of the second heat sink is greater than the surface area of the first heat sink.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 11, 2019
    Applicant: DENSO CORPORATION
    Inventor: Toshinori MARUYAMA
  • Patent number: 10343712
    Abstract: In an electric power steering system, a motor outputs, based on an AC voltage controlled by switching elements using a power-supply voltage from a power source, assist torque for assisting a driver's turning effort of a steering member. A voltage monitor monitors the power-supply voltage, and a determiner determines whether the power-supply voltage is lower than an assistive voltage. The assistive voltage is defined as a voltage that enables the motor to output the assist torque. A temperature detector detects a temperature of each switching element. A motor control unit determines whether the temperature of each switching element is lower than a heat-resistant temperature of the corresponding switching element. The motor control unit controls a motor current when it is determined that the power-supply voltage is lower than the assistive voltage, and the temperature of at least one switching element is lower than the heat-resistant temperature.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Yoshihide Kuroda, Haruo Suzuki
  • Patent number: 10344721
    Abstract: A fuel injector 100 includes a nozzle member 60 having a fuel passage 60a leading to an injection port 60b; a valve main body 51 adapted to reciprocate for opening and closing the fuel passage 60a; an elastic portion 56 elastically deformable in closing the fuel passage 60a by movement of the valve main body 51 in a closing direction, the elastic member being attached to one of the nozzle member 60 and the valve main body 51 and adapted to be abutted against the other of the nozzle member 60 and the valve main body 51 to close the fuel passage 60a by moving the valve main body 51 in the closing direction; and a stopper 70 adapted to restrict movement of the valve main body 51 in the closing direction by being abutted against the valve main body 51, the stopper 70 being formed of material different from the nozzle member 60.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Tomoki Fujino, Takashi Furukawa, Yusuke Hongo
  • Patent number: 10348060
    Abstract: When one of a center chip and a ground chip of a spark plug is defined as a first chip and another one is defined as a second chip, a discharge starting ridge line, which is a straight ridge line that forms a boundary between two surfaces having different normal line directions, is formed in a portion closest to the second chip in the first chips, and a distance from the discharge starting ridge line to the second chip is configured to be equal at a portion where the first chip and the second chip are opposed to each other.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Tomoyuki Watanabe, Ryohei Akiyoshi, Ryuichi Ohno
  • Patent number: 10345328
    Abstract: A wind direction meter has the following plurality of sensors and a control unit. Each sensor has a first surface and has first and second interlayer connection members made of different metals or semiconductors. Further, the wind direction meter includes a thermoelectric conversion element which generates an electrical output when a temperature difference occurs between first ends and second ends of the respective first and second interlayer connection members. The sensor generates an electric output when the surrounding air, whose temperature has been changed by a heater, is moved by the wind to produce a temperature difference between the first ends and the second ends of the first and second interlayer connection members. The control unit calculates the direction of the wind on the basis of the difference in output. Thus, the wind direction of a weak wind can be detected with the wind direction meter.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Toshikazu Harada, Atusi Sakaida, Toshihisa Taniguchi
  • Patent number: 10348147
    Abstract: In a rotating armature, the numbers of teeth straddled by each of plural coil portions are all the same as each other, three. In plural windings that form the plural coil portions, three individual coil portions that, out of the plural coil portions, are disposed at uniform intervals around the circumferential direction of the armature core and are connected together in series are formed in each of the windings. In each of the windings including the three individual coil portions, one segment out of the plural segments is connected to another segment that has the same phase as the one segment out of the plural segments.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kazushi Sugishima, Tetsuji Yoshikawa
  • Patent number: 10345443
    Abstract: A radar device for detecting a distance between vehicles by the transmission and reception of survey waves is mounted in a vehicle as an object detection means for detecting an object. A cruise control apparatus includes a trajectory calculation means for calculating a moving locus of a preceding vehicle traveling in front of an own vehicle on the basis of the detection result of the radar device, a route prediction means for calculating a predicted route of the vehicle on the basis of the moving locus of the preceding vehicle calculated by the trajectory calculation means, an axial deviation detection means for detecting the axial deviation of the radar device, and an invalidation processing means for invalidating the predicted route calculated by the route prediction means when it is detected that the axial deviation detection means has detected axial deviation of the radar device.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: July 9, 2019
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Youhei Masui, Takeshi Nanami, Takashi Nishida