公开(公告)号：US20210115980A1

公开(公告)日：2021-04-22

申请号：US17137727

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Takumi SUGIURA ,  Akira TAKAGI ,  Ryo ISHIBASHI

IPC: F16D13/52 ,  F16H25/12

Abstract: At a drive cam slope groove, a groove bottom is sloped relative to one end surface of a drive cam such that a depth of the groove bottom continuously decreases from one side toward other side in a circumferential direction. At a drive cam planar groove, the groove bottom is parallel to the one end surface of the drive cam. A drive cam connection groove has: one end connected to an end of the drive cam slope groove located on the other side in the circumferential direction of the drive cam; and the other end connected to an end of the drive cam planar groove located on the one side in the circumferential direction. A slope angle of the groove bottom relative to the one end surface of the drive cam continuously changes from the one end to the other end of the drive cam connection groove.

公开(公告)号：US20150346738A1

公开(公告)日：2015-12-03

申请号：US14728207

申请日：2015-06-02

Applicant: DENSO CORPORATION

Inventor： Ryo ISHIBASHI ,  Akira TAKAGI

IPC: G05D16/20 ,  G05B11/42 ,  F16K31/06 ,  F16K3/24 ,  F16K21/04

CPC classification number: F16K31/0675 ,  F16K31/0613 ,  G05D16/202

Abstract: In a method for setting a command-response characteristic of an oil pressure control apparatus for each oil temperature, the command-response characteristic actually measured at a reference oil temperature is treated as a reference I-P characteristic. Then, a stroke-response characteristic is calculated based on the reference I-P characteristic, a thrust-force correlation and a restoring-force correlation. An overlapping length and a clearance width of overlapping areas between a sleeve and a spool of the oil pressure control apparatus are estimated based on the reference I-P characteristic and the stroke-response characteristic. Finally, the command-response characteristics for each oil temperature are decided and set based on the overlapping length and the clearance width.

Abstract translation: 另外，在各油温的油压控制装置的指令响应特性的设定方法中，以基准油温实际测定的指令响应特性为基准I-P特性。 然后，基于参考I-P特性，推力相关性和恢复力相关性来计算行程响应特性。 基于参考I-P特性和行程响应特性来估计油压控制装置的套筒和阀芯之间的重叠区域的重叠长度和间隙宽度。 最后，根据重叠长度和间隙宽度决定和设定每个油温的指令响应特性。