公开(公告)号：US20160245397A1

公开(公告)日：2016-08-25

申请号：US15044540

申请日：2016-02-16

Applicant: DENSO CORPORATION

Inventor： Akira TAKAGI ,  Hiroshi TANIMURA ,  Hajime YOKOYAMA ,  Hirohisa NODA

IPC: F16H61/02 ,  F16H61/00

CPC classification number: F16H61/0206 ,  F16H61/0021 ,  F16H61/0251 ,  F16H2061/0253

Abstract: A first-type passage switching valve is provided in an oil supply line connecting a friction element to an N/H type pressure control valve and a second-type passage switching valve is provided in another oil supply line connecting another friction element to an N/L type pressure control valve. A working-pressure output valve outputs a hydraulic working pressure to each of the first-type and the second-type passage switching valves. The first-type passage switching valve changes its communication condition from a first communication state connecting the friction element and the pressure control valve with each other to a second communication state connecting the friction element and a drain side with each other, or vice versa. The second-type passage switching valve changes its communication condition from a first communication state connecting the friction element and the pressure control valve with each other to a third communication state connecting the friction element and a hydraulic pressure source with each other, or vice versa.

Abstract translation: 第一通道切换阀设置在将摩擦元件连接到N / H型压力控制阀的供油管路中，并且第二通道切换阀设置在将另一摩擦元件连接到N / L型压力控制阀。 工作压力输出阀向第一和第二通道切换阀中的每一个输出液压工作压力。 第一通道切换阀将从摩擦元件和压力控制阀彼此连接的第一连通状态的通信状态改变为将摩擦元件和排水侧彼此连接的第二连通状态，反之亦然。 第二通道切换阀将从摩擦元件和压力控制阀彼此连接的第一连通状态的连通状态改变为将摩擦元件和液压源彼此连接的第三连通状态，反之亦然。

公开(公告)号：US20190249788A1

公开(公告)日：2019-08-15

申请号：US16318163

申请日：2017-07-18

Applicant: DENSO CORPORATION

Inventor： Hiroshi TANIMURA ,  Akira TAKAGI ,  Atsushi MOTOKI ,  Tsunehito WATANABE

IPC: F16K11/07

Abstract: A critical state is assumed in which a position of one end of the opening of the input port in the axial direction and a position of the other end of the groove in the axial direction accord with each other with respect to the axial direction. In the critical state, when a straight line is extended in the axial direction as well as radially outward of the spool without changing a direction of the straight line in a circumferential direction of the spool from one end of the groove bottom in the axial direction with the same inclination as the inclination of the groove bottom at the one end of the groove in the axial direction relative to the axial direction, the straight line passes through the opening of the output port to contact a wall surface of the output port.