公开(公告)号：US20150034032A1

公开(公告)日：2015-02-05

申请号：US14337507

申请日：2014-07-22

Applicant: DENSO CORPORATION

Inventor： Tomonobu IKUMA ,  Kinya TAKAHASHI ,  Eiji ISOBE

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426 ,  F01L2001/3444 ,  F01L2001/34456

Abstract: In a valve timing adjusting device, a vane rotor includes a second supply oil passage connectable to a first supply oil passage of a second shaft. A check valve is provided between the vane rotor and the second shaft, and permits a flow from the first supply oil passage toward the second supply oil passage and prevents a flow from the second supply oil passage toward the first supply oil passage. A fixing unit is provided between the check valve and the second shaft, and fixes the check valve between the fixing unit and the vane rotor. The fixing unit includes a third supply oil passage which connects the first supply oil passage and the second supply oil passage. A filter is provided for the fixing unit and can capture foreign substances flowing through the third supply oil passage.

Abstract translation: 在气门正时调节装置中，叶片转子包括可连接到第二轴的第一供油通道的第二供油通道。 在叶片转子和第二轴之间设置有止回阀，允许从第一供给油路向第二供给油通路的流动，防止从第二供给油路向第一供给油通路的流动。 在止回阀和第二轴之间设置有固定单元，并将止回阀固定在固定单元和叶片转子之间。 定影单元包括连接第一供油通道和第二供油通道的第三供油通道。 为固定单元提供一个过滤器，可以捕获流过第三供油通道的异物。

公开(公告)号：US20230014627A1

公开(公告)日：2023-01-19

申请号：US17949692

申请日：2022-09-21

Applicant: DENSO CORPORATION

Inventor： Tomonori SUZUKI ,  Futoshi KAWAMURA ,  Kinya TAKAHASHI

IPC: F01L1/344 ,  F16K11/07

Abstract: A hydraulic oil control valve includes a sleeve, a spool and a spring. The spool is received at an inside of the sleeve and is configured to be reciprocated. The spring is configured to be seated against a spring seat of the sleeve and is configured to apply a preload to the spool. The sleeve has a stepped portion, which has a spool contact surface for limiting movement of the spool toward the spring seat, and a protrusion, which is located at a center of the spring seat and protrudes toward an opening of the sleeve. The protrusion has a sloped peripheral surface. The protrusion is configured such that in a state where an end portion of the spring is not seated against the spring seat while the spring is placed adjacent to the spring seat, the end portion of the spring contacts the protrusion.

公开(公告)号：US20210180476A1

公开(公告)日：2021-06-17

申请号：US17167323

申请日：2021-02-04

Applicant: DENSO CORPORATION

Inventor： Takuya HAMADA ,  Makoto OTSUBO ,  Tetsuro MITSUTANI ,  Kinya TAKAHASHI

IPC: F01L1/344 ,  F16K3/28

Abstract: A check valve is made of a resilient body wound in a ring form and is located in an annular flow passage. A displacement limiter includes: a limiter main body that is located on an outer side of the check valve and is configured to limit displacement of the check valve in a diameter increasing direction of the check valve; and a limiter flow passage that communicates between one side and the other side of the limiter main body in an axial direction to enable hydraulic oil to flow between the one side and the other side of the limiter main body through the limiter flow passage.

公开(公告)号：US20220412235A1

公开(公告)日：2022-12-29

申请号：US17894529

申请日：2022-08-24

Applicant: DENSO CORPORATION

Inventor： Hikaru KOKUMAI ,  Futoshi KAWAMURA ,  Kinya TAKAHASHI

IPC: F01L1/344

Abstract: A valve timing adjustment device includes a hydraulic oil control valve. The hydraulic oil control valve includes: an outer sleeve that is shaped in a tubular form and has a projection at an outer periphery of the outer sleeve; an inner sleeve that is located on an inner side of the outer sleeve; and a spool that is located at an inside of the inner sleeve. A reference-shape portion, which serves as a reference at a time of positioning the outer sleeve relative to the inner sleeve, is formed at an outer periphery of the projection. A seat surface of the projection, which fixes a vane rotor between the seat surface of the projection and an end portion of one of a drive shaft and a driven shaft, is shaped in a rotationally symmetric form that is rotationally symmetric around a rotational axis.

公开(公告)号：US20220010699A1

公开(公告)日：2022-01-13

申请号：US17483649

申请日：2021-09-23

Applicant: DENSO CORPORATION

Inventor： Futoshi KAWAMURA ,  Kinya TAKAHASHI

IPC: F01L1/344 ,  F16K27/04 ,  F16K11/07

Abstract: A hydraulic oil control valve, which is placed along a rotational axis of a valve timing adjusting device, includes a sleeve and a spool configured to slide in an axial direction on an inner side of the sleeve in a radial direction. The sleeve includes: an inner sleeve that has an opening in which a distal end portion of the spool is inserted; and an outer sleeve. In a state where the spool is positioned farthest from an actuator, the distal end portion projects from the opening toward a side that is opposite to the actuator.