公开(公告)号：US10808848B2

公开(公告)日：2020-10-20

申请号：US16051517

申请日：2018-08-01

Applicant: DENSO CORPORATION

Inventor： Naohito Seko ,  Yoshiaki Yamamoto ,  Shinichi Yokoyama ,  Yuuji Nakano ,  Ryo Sano

IPC: F16K5/06 ,  F16K5/20 ,  F16K11/087 ,  F16K31/04

Abstract: A valve device includes: a ball valve having a ball face shaped in a convex spherical surface; and a valve seat having a seat face shaped in a concave spherical surface. The seat face is pressed onto the ball face. The ball valve is rotated to open a valve by communicating a valve opening defined in the ball valve and a seat opening defined in the valve seat with each other, and to close the valve by stop the communication. A diameter of the seat opening ϕ2 is smaller than a diameter of the valve opening ϕ1. A curvature radius of the ball face R1 is smaller than or equal to a curvature radius of the seat face is R2.

公开(公告)号：US09500162B2

公开(公告)日：2016-11-22

申请号：US13948689

申请日：2013-07-23

Applicant: DENSO CORPORATION

Inventor： Kazushi Sasaki ,  Ryo Sano ,  Satoshi Ishigaki ,  Hiroki Shimada

IPC: F02M25/07 ,  F16K31/04 ,  F16K37/00 ,  F16K31/524

CPC classification number: F02M26/54 ,  F16K31/042 ,  F16K31/047 ,  F16K31/52408 ,  F16K37/0083

Abstract: A valve apparatus performs at least one of a first operation in which an electric motor is energized in a valve-close direction and a rotation shaft is rotated until its rotation is stopped and a second operation in which the electric motor is deenergized and a valve is fully closed by a biasing force of a return spring. Thereby, a rotation angle of the rotation shaft becomes a rotation-stop angle or the rotation angle becomes in the backlash range, so that a biasing force of the return spring is not transmitted to the rotation shaft. Then, the electric motor generates a specified torque, which is less than a valve-opening torque by which the valve starts opening. Thereby, a rotation angle of the rotation shaft can be stopped at a full-close angle. The full-close angle can be made correspond to an output of a rotational angle sensor.

Abstract translation: 阀装置执行以下操作中的至少一个：电动机在关闭方向上通电并且旋转轴旋转直到其旋转停止的第一操作和电动机断电的第二操作和阀是 由复位弹簧的偏置力完全关闭。 由此，旋转轴的旋转角度成为止转角，或旋转角度成为间隙范围，使得复位弹簧的作用力不会传递给旋转轴。 然后，电动机产生规定的转矩，该转矩小于开阀开阀的开阀力矩。 由此，旋转轴的旋转角度能够以全角度停止。 全关角度可以对应于旋转角度传感器的输出。

公开(公告)号：US11067180B2

公开(公告)日：2021-07-20

申请号：US16282332

申请日：2019-02-22

Applicant: DENSO CORPORATION

Inventor： Naohito Seko ,  Yoshiaki Yamamoto ,  Shinichi Yokoyama ,  Yuuji Nakano ,  Ryo Sano

IPC: F16K5/06 ,  F16K11/087 ,  F16K5/20 ,  F16K31/04

Abstract: A valve device includes: a ball valve having a ball face shaped in a convex spherical surface; and a valve seat having a seat face shaped in a concave spherical surface. The seat face is pressed onto the ball face. The ball valve is rotated to open a valve by communicating a valve opening defined in the ball valve and a seat opening defined in the valve seat with each other, and to close the valve by stop the communication. A diameter of the seat opening ϕ2 is smaller than a diameter of the valve opening ϕ1. A curvature radius of the ball face R1 is smaller than or equal to a curvature radius of the seat face is R2.

公开(公告)号：US09404444B2

公开(公告)日：2016-08-02

申请号：US14212032

申请日：2014-03-14

Applicant: DENSO CORPORATION

Inventor： Ryo Sano ,  Satoshi Ishigaki ,  Hiroki Shimada ,  Osamu Sato

IPC: F02M25/07

CPC classification number: F02M26/67 ,  F02M26/53 ,  F02M26/54 ,  F02M26/55 ,  F02M26/56 ,  F02M26/57 ,  F02M26/58 ,  F02M26/68 ,  Y02T10/121

Abstract: In an exhaust system for an internal combustion engine, an output member is configured to transmit power generated by a motor to a valving element via a valve stem. An output shaft is disposed on a rotation central axis of an output gear and coupled with the output gear to be rotatable integrally therewith. A follower is disposed eccentrically relative to a rotation central axis of the output shaft and connected to the output shaft to be rotatable integrally therewith. A first accommodating chamber accommodates at least the valve stem and the follower. A second accommodating chamber accommodates at least the motor and the output gear. A housing includes a housing wall that divides the first chamber from the second chamber. The housing wall includes a first bearing slidably supporting the output shaft in its rotation direction, and a cylindrical first bearing holder holding outer periphery of the first bearing.

Abstract translation: 在用于内燃机的排气系统中，输出构件被配置为经由阀杆将电动机产生的动力传递给阀元件。 输出轴设置在输出齿轮的旋转中心轴上并与输出齿轮联接以与其一体旋转。 跟随器相对于输出轴的旋转中心轴偏心设置，并连接到输出轴以与其一体地旋转。 第一容纳室容纳至少阀杆和从动件。 第二容纳室容纳至少电机和输出齿轮。 壳体包括将第一腔室与第二腔室分开的壳体壁。 壳体壁包括可沿其旋转方向可滑动地支撑输出轴的第一轴承和保持第一轴承的外周的圆柱形第一轴承保持架。