公开(公告)号：US11067181B2

公开(公告)日：2021-07-20

申请号：US16556792

申请日：2019-08-30

Applicant: DENSO CORPORATION

Inventor： Kentaro Yutani ,  Takumi Kataoka ,  Naohito Seko

IPC: F16K5/20 ,  F16K5/06 ,  F16K37/00

Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.

公开(公告)号：US10539063B2

公开(公告)日：2020-01-21

申请号：US16258856

申请日：2019-01-28

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Yuji Ito ,  Kentaro Yutani ,  Tomotaka Sugishita ,  Motomasa Iizuka ,  Takeo Matsumoto

IPC: F01P5/12 ,  F01P3/02 ,  F01P7/16 ,  F04B49/02 ,  F01P11/16 ,  F01P11/18

Abstract: The cooling system is provided with an internal passage for circulating the cooling water inside an internal combustion engine, a water pump provided in an one end side external passage connected to the one end portion of the internal passage, and an ECU configured to execute a water flow switching control that switches a cooling water flow in the internal passage between a forward flow directed from the one end portion of the internal passage to the other end portion and a reverse flow directed from the other end portion to the one end portion.

公开(公告)号：US10443745B2

公开(公告)日：2019-10-15

申请号：US15551336

申请日：2016-03-24

Applicant: DENSO CORPORATION

Inventor： Kentaro Yutani ,  Takumi Kataoka ,  Naohito Seko

IPC: F16K5/20 ,  F16K5/06 ,  F16K37/00

Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.