公开(公告)号：US20190170051A1

公开(公告)日：2019-06-06

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 ,  F01P7/16 ,  F01P11/16 ,  F01P11/18 ,  F04B49/02 ,  F01P3/02

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：US20180031132A1

公开(公告)日：2018-02-01

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

CPC classification number: F16K5/202 ,  F16K5/0605 ,  F16K5/0668 ,  F16K5/0678 ,  F16K5/0689 ,  F16K5/201 ,  F16K37/0041

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.