公开(公告)号：US20150300522A1

公开(公告)日：2015-10-22

申请号：US14684481

申请日：2015-04-13

Applicant: DENSO CORPORATION

Inventor： Atsushi ITO ,  Toshio NISHIMURA ,  Takeshi AKIYOSHI

IPC: F16K31/06 ,  H01F7/06

CPC classification number: H01F7/1844 ,  F01L9/04 ,  F02D41/20 ,  F02D2041/2058 ,  H01F7/1805 ,  H01F2007/1888

Abstract: An electromagnetic-valve controller includes a control switch, a control portion regulating a supply current supplied to the electromagnetic valve by controlling a drive of the control switch and controlling to open or close the electromagnetic valve, and a current detection portion detecting the supply current. The control portion controls the drive of the control switch based on a detection result of the current detection portion. The control portion controls the drive of the control switch by using a first pulse signal having a duty ratio that is variable, in a closed period. The control portion controls the drive of the control switch by using a second pulse signal maintaining the supply current to be constant so as to maintain the electromagnetic valve to be in the fully closed state, in a closed-state maintaining period.

Abstract translation: 电磁阀控制器包括控制开关，通过控制控制开关的驱动并控制打开或关闭电磁阀来调节供给电磁阀的供给电流的控制部分和检测供应电流的电流检测部分。 控制部基于电流检测部的检测结果来控制控制开关的驱动。 控制部在闭合期间通过使用占空比为可变的第一脉冲信号来控制控制开关的驱动。 在关闭状态保持期间，控制部通过使用维持供给电流为恒定的第二脉冲信号来控制控制开关的驱动，以将电磁阀保持在完全关闭状态。