公开(公告)号：US20180274452A1

公开(公告)日：2018-09-27

申请号：US15763287

申请日：2016-09-07

Applicant: DENSO CORPORATION

Inventor： Satoru HIRAMOTO ,  Osamu SHIMANE ,  Ju Hwan BAE

IPC: F02D9/10

CPC classification number: F02D9/107 ,  F02D9/10 ,  F02D9/1005 ,  F02D9/106 ,  F16K1/224 ,  Y02T10/42

Abstract: A fixing shaft portion of a valve shaft is fixed to a throttle valve at first and second locations by first and second fixing members. A first bearing includes an inner race fixed to a first rotatable shaft portion of the valve shaft, and an outer race fixed to a valve body. A second bearing includes a slidable portion axially slidably fitted to a second rotatable shaft portion of the valve shaft and a fixing portion fixed to the valve body. A linear expansion coefficient of the throttle valve and a linear expansion coefficient of the valve body are set to be larger than a linear expansion coefficient of the valve shaft in an axial direction. A first distance measured from a center point of the throttle valve to the first location is larger than a second distance measured from the center point to the second location.

公开(公告)号：US20150007801A1

公开(公告)日：2015-01-08

申请号：US14321111

申请日：2014-07-01

Applicant: DENSO CORPORATION

Inventor： Kazushi SASAKI ,  Osamu SHIMANE

IPC: F02M25/07

CPC classification number: F02M26/54 ,  F02M26/48 ,  F02M2026/001

Abstract: A control device executes a feedback control operation of an electric motor such that a sensed opening degree of a valve approaches a target opening degree, which is set for a time of fully closing the valve. The control device stops the energization of the electric motor after reaching of the sensed opening degree of the valve to an energization stop opening degree, which is set on a valve opening side of a full closing degree of the valve in a valve opening direction of the valve. A return spring urges the valve in a valve closing direction of the valve. The target opening degree is set on a valve closing side of the energization stop opening degree in the valve closing direction.

Abstract translation: 控制装置执行电动机的反馈控制操作，使得感测到的阀的开度接近设定为完全关闭阀的时间的目标开度。 控制装置在达到感测到的阀的开度之后停止电动机的通电，该通电停止开度设定在阀的打开方向上的阀的全闭合程度的阀开口侧 阀。 复位弹簧促使阀处于阀关闭方向。 目标开度设定在关闭方向的通电停止开度的关闭侧。

公开(公告)号：US20190186385A1

公开(公告)日：2019-06-20

申请号：US16323013

申请日：2017-07-28

Applicant: DENSO CORPORATION

Inventor： Osamu SHIMANE ,  Tohru SHIMIZU ,  Yuta FUJINAKA

IPC: F02D11/10 ,  G01D5/14 ,  F02D9/02 ,  F02D9/10

Abstract: An angle detection mechanism to detect a rotation angle of a rotation body includes a first detection unit to cause a first output value to constantly change in response to an angle change of the rotation body in the entire region of a specific rotation range and to set a change quantity of the first output value relative to the angle change in a first rotation region of the specific rotation range to be greater than a change quantity in a non-first rotation region, and a second detection unit to cause a second output value to constantly change in response to an angle change and to set a change quantity of the second output value in a second rotation region including a rotation region different from the first rotation region to be greater than a change quantity in a non-second rotation region.

公开(公告)号：US20130140477A1

公开(公告)日：2013-06-06

申请号：US13691959

申请日：2012-12-03

Applicant: DENSO CORPORATION

Inventor： Osamu SHIMANE

IPC: H02K7/116 ,  F16K31/02

CPC classification number: H02K7/116 ,  F16K31/02 ,  F16K31/043

Abstract: An electric actuator includes a direct current (DC) motor, a deceleration mechanism having an input gear, an intermediate gear, an output gear, and an output shaft, and a return mechanism. The return mechanism includes a first resilient member and a second resilient member. The first resilient member is configured to apply resilient force, which urges a movable body in a direction to return the movable body from its displacement position to initial position, to the output shaft or the output gear. The second resilient member is configured to apply resilient force, which urges the movable body in the direction to return the movable body from its displacement position to initial position, to a motor shaft, the input gear, or the intermediate gear.

Abstract translation: 电动执行器包括直流（DC）电动机，具有输入齿轮的减速机构，中间齿轮，输出齿轮和输出轴以及返回机构。 返回机构包括第一弹性构件和第二弹性构件。 第一弹性构件被构造成施加弹性力，其将可移动体沿使得可移动体从其位移位置返回到初始位置的方向向输出轴或输出齿轮施力。 第二弹性构件构造成施加弹性力，该弹力将可移动体沿着使移动体从其位移位置返回到初始位置的方向推动到电动机轴，输入齿轮或中间齿轮。

公开(公告)号：US20180003134A1

公开(公告)日：2018-01-04

申请号：US15542749

申请日：2016-03-11

Applicant: DENSO CORPORATION

Inventor： Takashi KOBAYASHI ,  Osamu SHIMANE

IPC: F02M26/67 ,  F16K31/04 ,  F16K1/226 ,  F16K41/00 ,  F16K1/22

Abstract: An EGR device has a housing defining an EGR passage through which an EGR gas flows; a shaft rotatably supported by the housing through a bearing; a valve body adjusting a flow passage area of the EGR passage by rotating along with the shaft; and an actuator connected to one end portion of the shaft to drive the shaft. The bearing has a first bearing supporting one end portion of the shaft and a second bearing supporting the other end portion of the shaft. Moreover, a sealing member preventing fluid from flowing into the actuator is disposed at one end portion of the shaft. The housing has the chamber which accommodates the second bearing and is isolated form the exterior. The second bearing is made of a PPS resin material to which a fluororesin material is added. Thus, the second bearing is not corroded even if exposed to an atmosphere of strong acid.

公开(公告)号：US20140283798A1

公开(公告)日：2014-09-25

申请号：US14152245

申请日：2014-01-10

Applicant: DENSO CORPORATION

Inventor： Osamu SHIMANE

IPC: F02M25/07

CPC classification number: F02M26/25 ,  F02M26/28 ,  F02M26/33

Abstract: An EGR passage recirculates a part of exhaust gas from an exhaust passage to an intake passage. An EGR valve opens and closes the EGR passage. An exhaust cooling passage includes an EGR cooler closer to the exhaust passage than the EGR valve. A bypass passage branches at an upstream of the exhaust cooling passage to bypass the EGR cooler and to extend toward a downstream of the exhaust cooling passage. In a bypass open mode, a bypass switching valve opens both the exhaust cooling passage and the bypass passage. In a bypass close mode, the bypass switching valve opens the exhaust cooling passage and closes the bypass passage. In a cooler close mode, the bypass switching valve closes the exhaust cooling passage and opens the bypass passage. The bypass switching valve is set at the bypass open mode when the EGR valve is closed.

Abstract translation: EGR通道将排气的一部分从排气通道再循环到进气通道。 EGR阀打开和关闭EGR通道。 排气冷却通道包括比EGR阀更靠近排气通道的EGR冷却器。 旁通通道在排气冷却通道的上游分支，以旁通EGR冷却器并向排气冷却通道的下游延伸。 在旁路打开模式中，旁通切换阀打开排气冷却通道和旁路通道。 在旁通关闭模式中，旁通切换阀打开排气冷却通道并关闭旁路通道。 在冷却器关闭模式中，旁路切换阀关闭排气冷却通道并打开旁通通道。 当EGR阀关闭时，旁通切换阀设置在旁通打开模式。