公开(公告)号：US20180328329A1

公开(公告)日：2018-11-15

申请号：US15775903

申请日：2016-11-04

Applicant: DENSO CORPORATION

Inventor： Shinichiro KOSHIMOTO ,  Kaoru ODA ,  Yasuhiro SAWADA

IPC: F02M63/00 ,  F02M59/46 ,  F16K17/04 ,  F02M55/00 ,  F02D41/38 ,  F02M67/12

CPC classification number: F02M63/005 ,  F02D41/3863 ,  F02M55/00 ,  F02M55/007 ,  F02M59/46 ,  F02M67/12 ,  F16K17/04 ,  F16K17/06

Abstract: A relief valve capable of reducing pressure of fuel in a discharge passage includes: a valve housing having a communication hole; a valve member provided in a reciprocating manner against the valve housing, and the valve member regulates a flow of the fuel between a discharge passage and a fuel chamber when the valve member is brought into contact with an inner wall formed around the communication hole and the valve member allows the flow of the fuel between the discharge passage and the fuel chamber when the valve member is separated from the inner wall; a spring that biases the valve member such that the valve member and the inner wall are in contact with each other; an adjusting pipe provided at a side opposite to the inner wall with respect to the valve member and configured to adjust biasing force of the spring; and a stopper that is formed as a different component from the adjusting pipe and that regulates movement of the valve member in a valve opening direction by abutting on the valve member.

公开(公告)号：US20180087481A1

公开(公告)日：2018-03-29

申请号：US15569487

申请日：2016-04-28

Applicant: DENSO CORPORATION

Inventor： Shinichiro KOSHIMOTO ,  Kaoru ODA ,  Masaharu NAKAOKA

IPC: F02M63/00 ,  F04B53/10

CPC classification number: F02M63/005 ,  F02M59/46 ,  F04B19/22 ,  F04B53/1085 ,  F04B53/1087 ,  F04B53/16 ,  F16K17/04 ,  F16K47/00

Abstract: A valve member includes a specific range in which an overlap area that is an area in which a hole opening and a slide outer wall are overlapped with each other becomes gradually smaller and a minimum passage area that is a passage area between an intermediate chamber and a first hole being minimum becomes gradually larger as the valve member is moved in a direction away from a valve seat portion in a movable range in the axial direction.

公开(公告)号：US20160369791A1

公开(公告)日：2016-12-22

申请号：US15188118

申请日：2016-06-21

Applicant: DENSO CORPORATION

Inventor： Shinichiro KOSHIMOTO ,  Kaoru ODA

IPC: F04B53/10 ,  F04B17/03 ,  F04B53/16 ,  F04B53/14 ,  F02M37/04 ,  F02M37/08 ,  F04B9/04 ,  F04B17/05

CPC classification number: F04B53/10 ,  F02M37/043 ,  F02M37/08 ,  F02M63/005 ,  F02M63/0225 ,  F04B9/042 ,  F04B17/03 ,  F04B17/05 ,  F04B49/08 ,  F04B49/24 ,  F04B53/14 ,  F04B53/16 ,  F16K17/04

Abstract: A high pressure pump includes a pressurization portion, a discharge portion, a body portion, a valve member, a holding member, and an urging member. The body portion includes a relief passage defining portion, an inlet defining portion, a valve seat, and an outlet defining portion. An outlet of the body portion is located apart in a separation direction from an inlet of the body portion. The valve member includes an outer wall surface closing the outlet of the body portion. When the valve member contacts the valve seat, a first distance between an edge portion of the outer wall surface of the valve member facing in a contact direction and an edge portion of the outlet defining portion facing in the contact direction is larger than a second distance between the valve member and the holding member.

Abstract translation: 高压泵包括加压部，排出部，主体部，阀部件，保持部件和推压部件。 主体部分包括释放通道限定部分，入口限定部分，阀座和出口限定部分。 主体部分的出口沿主体部分的入口沿分离方向分开。 阀构件包括封闭主体部分的出口的外壁表面。 当阀构件接触阀座时，阀构件的面向接触方向的外壁表面的边缘部分与出口限定部分在接触方向上面对的边缘部分之间的第一距离大于第二距离 在阀构件和保持构件之间。

公开(公告)号：US20170002779A1

公开(公告)日：2017-01-05

申请号：US15198036

申请日：2016-06-30

Applicant: DENSO CORPORATION

Inventor： Kaoru ODA ,  Shinichiro KOSHIMOTO ,  Shinobu OIKAWA

IPC: F02M37/00 ,  F04B49/22 ,  F02M55/02 ,  F04B53/16 ,  F04B53/10 ,  F02M37/06 ,  F04B19/22 ,  F04B53/14

CPC classification number: F02M37/0052 ,  F02M37/06 ,  F02M59/46 ,  F02M63/005 ,  F04B9/042 ,  F04B17/03 ,  F04B17/05 ,  F04B19/22 ,  F04B49/08 ,  F04B49/22 ,  F04B49/24 ,  F04B53/10 ,  F04B53/1087 ,  F04B53/14 ,  F04B53/16 ,  Y10T137/7734

Abstract: A high pressure pump includes a pressurization portion, a discharge portion, a body portion, a valve member, an urging member, valve hold member and a limiting portion. The body portion includes a relief passage, an inlet, a valve seat, and an outlet. The valve member includes a large diameter portion and a small diameter portion. The small diameter portion is located between the valve seat and the large diameter portion and has an outer diameter smaller than an outer diameter of the large diameter portion. The valve hold member surrounding and holding the large diameter portion. The limiting portion capable of limiting a motion of the valve hold member in a separation direction. According to this, a pressure in a fuel rail from extraordinarily increasing again after the relief valve is opened once.

Abstract translation: 高压泵包括加压部，排出部，主体部，阀构件，推压构件，阀保持构件和限制部。 主体部分包括卸载通道，入口，阀座和出口。 阀构件包括大直径部分和小直径部分。 小直径部分位于阀座和大直径部分之间，其外径小于大直径部分的外径。 围绕并保持大直径部分的阀保持构件。 所述限制部能够限制所述阀保持部件沿分离方向的运动。 据此，在安全阀打开一次后，燃料轨中的压力再次显着增加。

公开(公告)号：US20160305418A1

公开(公告)日：2016-10-20

申请号：US15187821

申请日：2016-06-21

Applicant: Denso International America, Inc. ,  DENSO CORPORATION

Inventor： Tsutomu FURUHASHI ,  Rebecca SPENCE ,  Joseph LUBINSKI ,  Dhyana RAMAMURTHY ,  Kaoru ODA

IPC: F04B49/06 ,  F02D41/38 ,  F02M59/10 ,  F02M63/00 ,  F04B39/00 ,  F02D41/08 ,  F02M59/36

CPC classification number: F04B49/06 ,  F02D41/08 ,  F02D41/3809 ,  F02D2200/101 ,  F02D2200/602 ,  F02M59/102 ,  F02M59/368 ,  F02M63/0022 ,  F02M2200/09 ,  F02M2200/302 ,  F04B39/0027

Abstract: A pump may have a first chamber and a solenoid coil to control movement of a first valve member. A second chamber may have a second valve member to control fluid moving into a third chamber. A first fluid passageway may link the first and second chambers, a second passageway may link second and third chambers and a third passageway may link third and fourth chambers. After pressurizing the third chamber causing fluid to flow into and leave a fourth chamber, the third chamber depressurizes due to downward movement of a plunger. Upon depressurization with a solenoid coil energized, second valve member floats and then moves against a valve seat. While the second valve member is moving toward the valve seat, the solenoid coil is de-energized causing the first valve member to move and strike the second valve member when the second valve member is moving at maximum velocity.

Abstract translation: 泵可以具有第一室和电磁线圈，以控制第一阀构件的运动。 第二室可以具有第二阀构件以控制流入第三室的流体。 第一流体通道可以连接第一和第二腔室，第二通道可以连接第二和第三腔室，第三通道可以连接第三和第四腔室。 在加压第三室，使流体流入并离开第四室之后，第三室由于柱塞的向下运动而减压。 在用螺线管线圈通电的情况下进行减压，第二阀构件浮动然后抵靠阀座移动。 当第二阀构件朝向阀座移动时，当第二阀构件以最大速度移动时，螺线管线圈断电，使得第一阀构件移动并撞击第二阀构件。