公开(公告)号：US11274579B2

公开(公告)日：2022-03-15

申请号：US16761973

申请日：2018-11-02

Applicant: Eaton Intelligent Power Limited

Inventor： Pavel Kucera ,  Petr Liskar ,  Pavel Fojtik

IPC: F01L1/34 ,  F01L9/21 ,  F01L9/26 ,  F01L1/18

Abstract: An actuator control system suitable for providing single wire control of electromagnetic latch assemblies providing for cylinder deactivation or variable valve actuation in a valvetrain system. The system is adapted to control electromagnetic latch assemblies that require DC current in a first direction for latching and DC current in a reverse of the first direction for unlatching. The actuator control system includes an inverting DC/DC converter and switching elements. In some embodiments, the inverting DC/DC converter uses capacitors to store energy that drives the inverted current. In some embodiments, the inverting DC/DC converter serves a plurality of distinct groups of the electromagnets.