公开(公告)号：US06216652B1

公开(公告)日：2001-04-17

申请号：US09535957

申请日：2000-03-27

申请人： Matthias Gramann ,  Michael Nagel ,  Reinhard Orthmann ,  Hans-Peter Schoener ,  Holger Steffen ,  Werner Wiedemann ,  Rudolf Wilczek

发明人： Matthias Gramann ,  Michael Nagel ,  Reinhard Orthmann ,  Hans-Peter Schoener ,  Holger Steffen ,  Werner Wiedemann ,  Rudolf Wilczek

IPC分类号： F01L904

CPC分类号： F01L9/04

摘要： A method of operating an actuator for electromagnetically controlling a valve in an internal combustion engine involves supplying a heating current to the operating coils of the actuator before starting the internal combustion engine from a cold start condition. Thereby, the operating coils, the components surrounding them, and the lubricant are heated to ensure proper viscosity of the lubricant and thus proper operation of the actuator.

摘要翻译： 操作用于电磁控制内燃机中的阀的致动器的方法包括在从冷启动状态开始内燃机之前向致动器的工作线圈供给加热电流。 由此，加工操作线圈，围绕它们的部件和润滑剂，以确保润滑剂的适当粘度，从而确保致动器的正常操作。

公开(公告)号：US06772719B2

公开(公告)日：2004-08-10

申请号：US10616687

申请日：2003-07-10

申请人： Robert Schmidt ,  Holger Steffen ,  Thomas Stolk ,  Alexander von Gaisberg-Helfenberg

发明人： Robert Schmidt ,  Holger Steffen ,  Thomas Stolk ,  Alexander von Gaisberg-Helfenberg

IPC分类号： F01L902

CPC分类号： F01L9/04 ,  F01L1/24

摘要： In an operating system for a hydraulic valve clearance control element of an internal combustion engine, which includes a hydraulic fluid having a pressure that depends on the engine operating state and wherein the hydraulic clearance control element includes a pressure chamber in which a hydraulic fluid volume is maintained for adjusting the length of the hydraulic clearance control element and means for maintaining the fluid volume when, after engine shut down, the pressure of the hydraulic fluid supplied by an engine fluid pressure source drops below a certain value so as to maintain the hydraulic clearance control element at its operating length during engine shutdown, means are arranged on the hydraulic fluid supply line to the hydraulic valve clearance control element for releasing hydraulic fluid to reduce its pressure below the certain value immediately upon engine shut down to safely maintain the hydraulic clearance control elements at their operating length.

摘要翻译： 在用于内燃机的液压阀间隙控制元件的操作系统中，其包括具有取决于发动机操作状态的压力的液压流体，并且其中液压间隙控制元件包括其中液压流体体积为 维持用于调节液压间隙控制元件的长度和用于在发动机关闭之后保持流体体积的装置，由发动机流体压力源供应的液压流体的压力降低到一定值以下，以保持液压间隙 控制元件在发动机停机期间的运行长度上，装置被布置在液压流体供给管路上，用于液压阀间隙控制元件，用于释放液压流体，以在发动机关闭时立即将其压力降低到一定值以安全地保持液压间隙控制 元素在其运行长度。