公开(公告)号：US20180100586A1

公开(公告)日：2018-04-12

申请号：US15672407

申请日：2017-08-09

Applicant: DENSO CORPORATION

Inventor： Satoshi ISHIGAKI

IPC: F16K1/22 ,  F17C13/04 ,  F16K1/226

CPC classification number: F16K1/221 ,  F02B39/00 ,  F02C7/04 ,  F02M26/54 ,  F02M26/70 ,  F16K1/205 ,  F16K1/2092 ,  F16K1/226 ,  F16K1/2261 ,  F16K1/46 ,  F16K3/243 ,  F17C13/04

Abstract: The present disclosure provides a valve device including a housing, a shaft, a butterfly valve, and a sealing member. The butterfly valve has a disk shape and defines a groove formed on an outer circumferential surface. The butterfly valve is fixed to the shaft and housed in a passage in the housing to selectively open and close the passage. The sealing member has an annular shape and fit into the groove. The outer circumferential surface of the sealing member has an arc surface having a diameter equal to the diameter of the passage. The arc surface comes into contact with the inner wall of the passage when the passage is closed.

公开(公告)号：US20140034029A1

公开(公告)日：2014-02-06

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

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：US20140311464A1

公开(公告)日：2014-10-23

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。

公开(公告)号：US20130228157A1

公开(公告)日：2013-09-05

申请号：US13772967

申请日：2013-02-21

Applicant: DENSO CORPORATION

Inventor： Satoshi ISHIGAKI

IPC: F02M25/07

CPC classification number: F02M26/67 ,  F02M26/73 ,  Y02T10/121

Abstract: An arm portion is integrally formed with a housing. The arm portion protrudes from the housing in such a manner as not to be in contact with a passage-forming portion and a passage-side fastening portion. The arm portion has corner portions and a drive-side fastening portion. After a heat of EGR gas is transferred to the drive-side fastening portion, the heat is transferred to the housing through the corner portions. The arm portion elongates a heat transfer pass from the EGR gas to the driving portion to increase a resistance of heat transfer. Further, the arm portion increases a heat radiation surface area to increase a heat radiation quantity. The EGR apparatus 1 can restrict a heat transfer from the EGR gas to the driving portion.

Abstract translation: 臂部与壳体一体地形成。 臂部从壳体突出，不与通道形成部分和通路侧紧固部分接触。 臂部具有角部和驱动侧紧固部。 在EGR气体的热量传递到驱动侧紧固部分之后，热量通过角部传递到壳体。 臂部分将从EGR气体到传动部分的传热通道伸长以增加传热阻力。 此外，臂部增加热辐射表面积以增加热辐射量。 EGR装置1可以限制从EGR气体到驱动部的热传递。

公开(公告)号：US20180258889A1

公开(公告)日：2018-09-13

申请号：US15752633

申请日：2016-10-11

Applicant: DENSO CORPORATION

Inventor： Satoshi ISHIGAKI

IPC: F02M26/70 ,  F16K1/226

CPC classification number: F02M26/70 ,  F02M26/67 ,  F16J9/14 ,  F16J9/16 ,  F16J15/16 ,  F16J15/3272 ,  F16K1/224 ,  F16K1/2261 ,  F16K1/2268 ,  F16K31/041 ,  F16K31/535

Abstract: A body of a seal ring is in an annular shape and includes an abutment joint at a location in the circumferential direction. The opposite ends of the body forming the abutment joint include an overlapping part where one end and the other end of the body overlap each other. The overlapping part includes a step cut joint that forms an overlap in the radial direction and a lap joint that forms an overlap in the plate thickness direction. Facing faces that face each other in the plate thickness direction in the lap joint are planes extending from an inner peripheral circular arc of the seal ring up to an outer peripheral circular arc of the seal ring.

公开(公告)号：US20150330335A1

公开(公告)日：2015-11-19

申请号：US14676033

申请日：2015-04-01

Applicant: DENSO CORPORATION

Inventor： Hiroki SHIMADA ,  Kazushi SASAKI ,  Satoshi ISHIGAKI

IPC: F02M25/07 ,  F02D41/22 ,  F02D41/00

CPC classification number: F02M26/54 ,  F02D41/0077 ,  F02D41/22 ,  F02D41/221 ,  F02D2011/108 ,  F02M26/48 ,  F02M26/67 ,  Y02T10/47

Abstract: In an exhaust device for an internal combustion engine, a control device controls a motor based on an output signal of a sensor. The control device has a first valve position detector detecting a first valve position when a valve unit is biased to close using only a biasing force of a spring. The control device has a second valve position detector detecting a second valve position when the valve unit is biased to close using a driving force of the motor that is larger than the biasing force of the spring. The control device detects a foreign object between a valve object and a valve seat and detects a size of the foreign object based on a comparison result between the first valve position and the second valve position.

Abstract translation: 在内燃机的排气装置中，控制装置根据传感器的输出信号来控制电动机。 控制装置具有第一阀位置检测器，当阀单元仅使用弹簧的偏置力而被偏压关闭时，检测第一阀位置。 控制装置具有检测第二阀位置的第二阀位置检测器，当使用马达的驱动力将阀单元偏置关闭时，该单元的驱动力大于弹簧的偏置力。 控制装置基于第一阀位置和第二阀位置之间的比较结果来检测阀对象和阀座之间的异物，并检测异物的尺寸。