公开(公告)号：US20210285412A1

公开(公告)日：2021-09-16

申请号：US17331444

申请日：2021-05-26

Applicant: DENSO CORPORATION

Inventor： Yuki WATANABE ,  Kouichi MOCHIZUKI ,  Atsuya OKAMOTO

IPC: F02M61/18

Abstract: A valve body has a seat surface swollen toward a seating surface of an injection hole body having an injection hole. A fuel passage is between the injection hole body and the valve body and is opened and closed due to separation and seating of the seat surface. In a seat portion throttle state, a flow rate of injected fuel is throttled by a gap between the seat surface and the seating surface. In an injection hole throttle state, the flow rate of fuel is throttled by the injection hole. When the valve body is operated from a valve closing position to a full lift position, the seat portion throttle state is brought from the valve closing position to a predetermined intermediate position, and the injection hole throttle state is brought from the intermediate position to the full lift position.

公开(公告)号：US20200224622A1

公开(公告)日：2020-07-16

申请号：US16830826

申请日：2020-03-26

Applicant: DENSO CORPORATION

Inventor： Shinsuke YAMAMOTO ,  Kouichi MOCHIZUKI ,  Atsuya OKAMOTO ,  Yuki WATANABE ,  Tohru SEKIDO

IPC: F02M51/06

Abstract: A fuel injection valve includes a valve body, a fixed core, a movable core, a spring, and a cup. The spring is elastically deformed according to valve opening operation of the valve body, and exerts a valve closing elastic force for closing the valve body. The cup contacts a valve closing contact surface of the valve body, and transmits the valve closing elastic force to the valve body. At a start of predetermined-distance movement of the movable core together with the cup, the cup is in contact with the valve closing contact surface, and the valve body or the cup has a supply flow channel through which fuel is supplied to the valve body closing contact surface which is in a state contacting the cup.

公开(公告)号：US20190260324A1

公开(公告)日：2019-08-22

申请号：US16405049

申请日：2019-05-07

Applicant: DENSO CORPORATION

Inventor： Shuji KURAMITSU ,  Koichi NAKAMURA ,  Atsuko OKA ,  Masaya TAKI ,  Hideki KABUNE ,  Yuki WATANABE ,  Toshimitsu SAKAI ,  Yosuke OGI

IPC: H02P25/22 ,  H02P27/08 ,  H02P21/22 ,  B62D5/04

Abstract: A rotary electric device control device controls driving of a rotary electric device including a plurality of winding sets. The rotary electric device control device includes: a plurality of drive circuits; and a plurality of control units. The control units include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively, and communicate with each other. The control units include: one master control unit; and at least one slave control unit. An electric power steering device includes: a rotary electric device control device; the rotary electric device that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric device to a drive target.

公开(公告)号：US20190152524A1

公开(公告)日：2019-05-23

申请号：US16091247

申请日：2017-04-06

Applicant: DENSO CORPORATION

Inventor： Toshihiro FUJITA ,  Katsuhiko HAYASHI ,  Takaharu KOZAWA ,  Shuhei MIYACHI ,  Koichi NAKAMURA ,  Yuki WATANABE ,  Atsuko OKA ,  Shuji KURAMITSU ,  Toshimitsu SAKAI ,  Masaya TAKI

IPC: B62D15/02 ,  B62D5/04 ,  G01D5/14

Abstract: In a rotation detecting apparatus, each of first and second sensor elements measures rotation of a detection target. A circuit module includes first and second rotational angle calculators each calculating, based on a corresponding one of a first measurement value of the first sensor element and a second measurement value of the second sensor element, a rotational angle of the detection target. The circuit module includes first and second rotation number calculators each calculating, based on the corresponding one of the first measurement value and the second measurement value, a rotation number of the detection target. The circuit module includes first and second communicators each outputting, to a controller, a rotational angle signal based on the rotational angle and a rotation number signal based on the rotation number. A package packages the first and second sensor elements, and is mounted to a circuit board separately from the controller.

公开(公告)号：US20200224620A1

公开(公告)日：2020-07-16

申请号：US16830839

申请日：2020-03-26

Applicant: DENSO CORPORATION

Inventor： Kouichi MOCHIZUKI ,  Atsuya OKAMOTO ,  Shinsuke YAMAMOTO ,  Yuki WATANABE

IPC: F02M51/06 ,  B05B1/30

Abstract: A fuel injection valve includes a valve body, a fixed core, a movable core, a spring and a cup. The movable core has a first core contact surface which contacts the valve body when the movable core is moved by a predetermined distance away from a nozzle hole, and a second core contact surface which contacts the cup when the movable core is moved away from the nozzle hole. The movable core, the cup and the valve body form a fuel storage chamber which is surrounded by the movable core, the cup and the valve body to accumulate fuel. The first core contact surface is located inside the fuel storage chamber. The first core contact surface and the second core contact surface have a communication groove through which the inside and the outside of the fuel storage chamber communicate with each other.

公开(公告)号：US20200047806A1

公开(公告)日：2020-02-13

申请号：US16654314

申请日：2019-10-16

Applicant: DENSO CORPORATION

Inventor： Takaharu KOZAWA ,  Shuji KURAMITSU ,  Koichi NAKAMURA ,  Yuki WATANABE ,  Atsuko OKA ,  Toshihiro FUJITA ,  Shuhei MIYACHI ,  Masaya TAKI ,  Toshimitsu SAKAI ,  Katsuhiko HAYASHI

IPC: B62D15/02 ,  B62D5/04 ,  B60R16/027

Abstract: A steering angle detection device is provided with a plurality of rotation angle sensors and a plurality of control units. The rotation angle sensors are capable of at least continuously calculating a rotation speed while an ignition switch of a vehicle is turned off, and are provided so as to correspond to steering angle calculation units which calculate steering angle based on the rotation speed and a rotation angle acquired from the rotation angle sensors and midpoint information related to the neutral position of a steering member. Power supplies are provided on a per-system basis. The rotation angle sensors or the control units are capable of holding the midpoint information while the ignition switch is turned off. If a power supply abnormality resulting in power supply failure occurs in some of the systems, the control unit of the abnormal system acquires the midpoint information and the rotation speed from the control unit of a normal system when the ignition switch is turned on.

公开(公告)号：US20200047805A1

公开(公告)日：2020-02-13

申请号：US16654307

申请日：2019-10-16

Applicant: DENSO CORPORATION

Inventor： Atsuko OKA ,  Shuji KURAMITSU ,  Koichi NAKAMURA ,  Yuki WATANABE ,  Toshihiro FUJITA ,  Takaharu KOZAWA ,  Shuhei MIYACHI ,  Katsuhiko HAYASHI ,  Masaya TAKI ,  Toshimitsu SAKAI

IPC: B62D15/02 ,  B62D5/04 ,  B60R16/027

Abstract: A steering angle detection device includes plural control units and plural steering angle sensors. Each control unit is configured to transmit steering angle information related to a steering angle of a vehicle to an external device and transmit and receive information mutually therebetween. Each steering angle sensor is provided in correspondence to each control unit and configured to output a sensor signal corresponding to a detection value of a change in the steering angle to the corresponding control unit. One of the control units transmits, as a transmission control unit, the steering angle information to the external device at one transmission timing.

公开(公告)号：US20210332780A1

公开(公告)日：2021-10-28

申请号：US17367766

申请日：2021-07-06

Applicant: DENSO CORPORATION

Inventor： Shinsuke YAMAMOTO ,  Yuki WATANABE ,  Atsuya OKAMOTO

IPC: F02M51/06

Abstract: A fixed core generates a magnetic attraction force with energization of a coil. A movable core has an attracted surface facing an attracting surface of the fixed core is attracted to the fixed core to cause the valve body to open a nozzle hole. A stopper member abuts against the movable core to restrict movement of the movable core. The movable core has an abutment portion that abuts against the stopper member, and a core body portion in which the attracted surface is formed. The attracting surface and the attracted surface extend annularly around an axis line of the fixed core, are formed so as to be separated from each other in an axis line direction in a state where the abutment portion abuts against the stopper member, and a separation distance from each other increases toward a radially outer side.