公开(公告)号：US20190078538A1

公开(公告)日：2019-03-14

申请号：US16081454

申请日：2017-01-27

Applicant: DENSO CORPORATION

Inventor： Hideki HAYASHI ,  Yuichiro MORITANI

IPC: F02M26/70 ,  F02M26/71 ,  F02M26/21 ,  F02M26/64 ,  F02M26/72 ,  F16K1/20 ,  F16K3/22 ,  F16K5/04 ,  F16K11/076

Abstract: A valve device includes a shaft, a valve body, and a housing including a valve opening. An outwardly facing surface of the valve body is out of contact with the housing and a valve-facing surface is in contact with the housing in a fully closed state in which the valve body closes the valve opening. A valve seal surface includes a first valve seal surface protruding in a valve closing direction and a second valve seal surface recessed in a valve opening direction. A first seal distance in a radial direction from an outer diameter end of the first valve seal surface to a rotation axis is shorter than a second seal distance in the radial direction from an outer diameter end of the second valve seal surface to the rotation axis. The first valve seal surface and the second valve seal surface each have at least a curved surface.

公开(公告)号：US20230044245A1

公开(公告)日：2023-02-09

申请号：US17879223

申请日：2022-08-02

Applicant: DENSO CORPORATION

Inventor： Hideki HAYASHI ,  Yuichiro MORITANI ,  Shogo TATEISHI

IPC: F02M26/72 ,  F16K11/18 ,  F16K31/524 ,  F02M26/22 ,  F02D41/00

Abstract: A valve device increases or decreases a flow rate of EGR gas. The valve device includes a housing, a bypass valve body, an EGR valve body. The housing includes a first upstream passage into which the EGR gas cooled by an EGR cooler flows, a second upstream passage into which the EGR gas that bypasses the EGR cooler flows, a junction connected to each of a gas-flow downstream side of the first upstream passage and a gas-flow downstream side of the second upstream passage, and a downstream passage connected to the first upstream passage and the second upstream passage via the junction. The bypass valve body opens and closes the second upstream passage. The EGR valve body is provided in the downstream passage, rotates around an EGR valve axis.

公开(公告)号：US20140000545A1

公开(公告)日：2014-01-02

申请号：US13928918

申请日：2013-06-27

Applicant: DENSO CORPORATION

Inventor： Hideki HAYASHI

IPC: F02M35/10

CPC classification number: F02M35/10 ,  F02B31/06 ,  F02D9/103 ,  Y02T10/146

Abstract: An apparatus has a turbulence generator valve which is arranged in an intake air passage. The valve generates turbulence in a cylinder of an engine. The valve receives an intake flow torque TA by flow of intake air. The valve is driven by an electric motor in an electric actuator. Reverse transmission torque TB is necessary to rotate the electric motor in the electric actuator when the electric motor is not activated. A cancel spring is provided to apply a cancel torque TC to the valve. The torques are set to satisfy |TA+TC|

Abstract translation: 一种装置具有布置在进气通道中的湍流发生阀。 阀门在发动机的气缸中产生湍流。 阀通过进气的流量接收进气流量转矩TA。 阀门由电动执行器中的电动机驱动。 当电动机未被激活时，需要反向传动扭矩TB来使电动执行器中的电动机旋转。 提供取消弹簧以向阀门施加取消扭矩TC。 扭矩设定为满足| TA + TC | <| TB |。 结果，可以在电致动器未被激活的同时保持阀的阀开度。

公开(公告)号：US20230043144A1

公开(公告)日：2023-02-09

申请号：US17879206

申请日：2022-08-02

Applicant: DENSO CORPORATION

Inventor： Shogo TATEISHI ,  Yuichiro MORITANI ,  Hideki HAYASHI

IPC: F02M26/54 ,  F02M26/26 ,  F02M26/70 ,  F02M26/72 ,  F16K31/53 ,  F16K31/524

Abstract: A valve device increases or decreases a flow rate of EGR gas. The valve device includes a housing, a bypass valve body, an EGR valve body. The housing includes: a first upstream passage into which the EGR gas cooled by an EGR cooler flows; a second upstream passage into which the EGR gas that bypasses the EGR cooler flows; a junction connected to each of a gas-flow downstream of the first upstream passage and a gas-flow downstream of the second upstream passage; and a downstream passage connected to the first upstream passage and the second upstream passage via the junction. The bypass valve body is provided in the second upstream passage. The EGR valve body is provided in the downstream passage.

公开(公告)号：US20230041903A1

公开(公告)日：2023-02-09

申请号：US17879177

申请日：2022-08-02

Applicant: DENSO CORPORATION

Inventor： Yuichiro MORITANI ,  Hideki HAYASHI

IPC: F02M26/52 ,  F02M26/70 ,  F02M26/22

Abstract: A valve device increases or decreases a flow rate of EGR gas. The valve device includes a housing, a bypass valve body, and an EGR valve body. The housing includes a first upstream passage into which the EGR gas cooled by an EGR cooler flows, a second upstream passage into which the EGR gas that bypasses the EGR cooler flows, and a downstream passage connected to the first upstream passage and the second upstream passage, and provided downstream with respect to the first upstream passage and the second upstream passage. The bypass valve body opens and closes the second upstream passage. The EGR valve body is provided in the downstream passage and rotates around an EGR valve axis to open and close the downstream passage.