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    • 6. 发明授权
    • Method of operating an electromagnetic actuator by affecting the coil
current during armature motion
    • 在电枢运动期间通过影响线圈电流来操作电磁致动器的方法
    • US5905625A
    • 1999-05-18
    • US941648
    • 1997-09-30
    • Michael Schebitz
    • Michael Schebitz
    • H01F7/08H01F7/123H01F7/13H01F7/18H01H47/04
    • H01F7/13H01F7/1844H01F7/123
    • A method of operating an electromagnetic actuator having an electromagnet provided with a pole face, an armature movable towards and away from the pole face and a resetting spring exerting on the armature a resetting force urging the armature away from the pole face, includes the steps of supplying current to the electromagnet for generating an electromagnetic force moving the armature towards the pole face against the resetting force; and controlling the current supplying step such that at least along a terminal portion of the displacement path of the armature during its approach toward said pole face, the force/time curve of the magnetic force extends substantially parallel to and lies above the force/displacement spring curve of the resetting spring.
    • 一种操作电磁致动器的方法,所述电磁致动器具有设置有极面的电磁体,可朝向和远离所述极面移动的电枢;以及在所述电枢上施加使所述电枢远离所述极面的复位力的复位弹簧,包括以下步骤: 向所述电磁体提供电流,用于产生使所述电枢抵抗所述复位力使所述电极朝向所述极面移动的电磁力; 以及控制电流供给步骤,使得至少沿电枢的位移路径的端子部分在其朝向所述极面的过程中,所述磁力的力/时间曲线基本上平行于所述力/位移弹簧 复位弹簧的曲线。
    • 7. 发明授权
    • Electromagnetic actuator having a pneumatic dampening element
    • 具有气动阻尼元件的电磁致动器
    • US06279524B1
    • 2001-08-28
    • US09501144
    • 2000-02-09
    • Michael Schebitz
    • Michael Schebitz
    • F01L904
    • H01F7/088F01L9/04
    • An electromagnetic actuator for operating a driven member includes an electromagnet having a yoke provided with a pole face and a coil supported by the yoke and adapted to be supplied with electric current to produce an electromagnetic force; and an armature connectable to the driven member and movable in a path of motion into a first position and a second position spaced from the first position. The armature is moved by the electromagnetic forces into the second position in contact with the pole face. A resetting spring is coupled to the armature and exerts a spring force thereon for urging the armature away from the second position toward the first position. The actuator further includes a dampening assembly which has a piston affixed to the armature and a dampening cylinder provided in the yoke and having an open end oriented toward the armature and being in an axial alignment with the piston. In the first position of the armature the piston is axially spaced from the dampening cylinder. The piston enters the dampening cylinder solely during a terminal portion of the path of motion of the armature during displacement thereof toward the second position.
    • 用于操作从动构件的电磁致动器包括具有设置有极面的轭的电磁体和由轭支撑的线圈,并且适于被供应电流以产生电磁力; 以及电枢,其可连接到从动构件并且可在运动路径中移动到与第一位置间隔开的第一位置和第二位置。 电枢被电磁力移动到与极面接触的第二位置。 复位弹簧联接到电枢并且在其上施加弹簧力,以将衔铁从第二位置推向第一位置。 致动器还包括阻尼组件,其具有附接到电枢的活塞和设置在磁轭中的阻尼气缸,并且具有朝向电枢定向且与活塞轴向对准的开口端。 在电枢的第一位置,活塞与阻尼气缸轴向间隔开。 活塞仅在电枢的运动路径的端部部分朝向第二位置移动时进入阻尼缸。
    • 8. 发明授权
    • Electromagnetic actuator for an engine valve, including an integrated
valve slack adjuster
    • 用于发动机气门的电磁致动器,包括一个集成的阀门松弛调节器
    • US6089197A
    • 2000-07-18
    • US440091
    • 1999-11-15
    • Holger LangeMichael Schebitz
    • Holger LangeMichael Schebitz
    • H01F7/16F01L1/24F01L1/25F01L9/04
    • F01L1/25F01L9/04
    • An electromagnetic actuator includes a housing; two spaced electromagnets disposed in the housing and having respective pole faces oriented toward one another; an armature movable between the pole faces; an opening spring and a closing spring exerting oppositely directed forces to the armature; a supply arrangement for delivering hydraulic oil under pressure; and an armature stem affixed to the armature and having a free end oriented toward a free end of a valve stem of an engine valve of an internal-combustion engine. The valve stem and the armature stem are urged toward one another by the opening and closing springs. The armature stem is provided with a channel adapted to be supplied with hydraulic oil from the supply arrangement. Further, a guide is provided for supporting and guiding the armature stem in displacements thereof. A piston-and-cylinder unit, including a cylinder chamber, is disposed between the free and of the armature stem and the free end of the valve stem for transmitting displacement forces from the armature stem to the valve stem by the piston-and-cylinder unit. A valve assembly is provided which has a first state in which hydraulic communication is maintained between the supply arrangement and the cylinder chamber via the channel in the armature stem and a second state in which hydraulic communication is blocked between the supply arrangement and the cylinder chamber.
    • 电磁致动器包括壳体; 两个间隔开的电磁铁设置在壳体中并具有相互朝向彼此的相对的极面; 电极之间可移动的电枢; 打开弹簧和向电枢施加相反方向的力的闭合弹簧; 用于在压力下输送液压油的供应装置; 以及固定在电枢上的电枢杆,并具有朝向内燃机的发动机气门的阀杆自由端的自由端。 阀杆和电枢杆通过打开和关闭弹簧彼此推动。 电枢杆设置有适于从供应装置供应液压油的通道。 此外,提供了用于在其位移中支撑和引导电枢杆的引导件。 包括气缸室的活塞和气缸单元设置在自由和电枢杆与阀杆的自由端之间,用于通过活塞和气缸将活塞力从电枢杆传递到阀杆 单元。 提供了一种阀组件,其具有第一状态,其中通过电枢杆中的通道在供应装置和气缸室之间保持液压连通,以及在供应装置和气缸室之间液压连通被阻塞的第二状态。
    • 9. 发明授权
    • Engine brake device for a commercial vehicle
    • 用于商用车辆的发动机制动装置
    • US5730102A
    • 1998-03-24
    • US624500
    • 1996-08-02
    • Manfred ArnoldMichael SchebitzHermann-Josef Ecker
    • Manfred ArnoldMichael SchebitzHermann-Josef Ecker
    • F01L9/04F01L13/06F02B3/06
    • F01L9/04F01L13/06F02B3/06
    • An internal combustion engine includes an intake valve for controlling a cylinder intake port; an exhaust valve for controlling a cylinder exhaust port; first and second valve lifters coupled to the intake and exhaust valves, respectively, for cyclically opening and closing the intake and exhaust valves during normal engine operation; and an actuating device for contacting the exhaust valve and for operating the exhaust valve independently from the second valve lifter. The actuating device has a withdrawn position and a valve-contacting position. In the withdrawn position the actuating device is out of contact with the exhaust valve and in the valve-contacting position the actuating device is in contact with the exhaust valve. There is further provided an electromagnetically-operating setting device having an inoperative position assumed for a normal engine operation and an operative position assumed for an engine-braking operation. The actuating device is coupled to the electromagnetically-operating setting device such that in the inoperative position of the electromagnetically-operating setting device the actuating device is in the withdrawn position and in the operative position of the electromagnetically-operating setting device the actuating device is in the valve-contacting position. The electromagnetically-operating setting device further has a mechanism for operating the actuating device to open and close the exhaust valve when the actuating device is in the valve-contacting position.
    • PCT No.PCT / EP95 / 02972 Sec。 371日期:1996年8月2日 102(e)日期1996年8月2日PCT Filed 1995年7月27日PCT公布。 出版物WO96 / 05415 日期1996年2月22日内燃机包括用于控制气缸进气口的进气阀; 用于控制气缸排气口的排气阀; 第一和第二气门挺杆分别联接到进气门和排气门,用于在正常发动机运行期间循环地打开和关闭进气门和排气门; 以及用于接触排气阀并独立于第二阀提升器操作排气阀的致动装置。 致动装置具有撤回位置和阀接触位置。 在撤回位置,致动装置与排气阀不接触,并且在阀接触位置,致动装置与排气阀接触。 还提供了一种电磁操作设置装置,其具有假定用于正常发动机操作的不工作位置和假定用于发动机制动操作的操作位置。 致动装置联接到电磁操作设置装置,使得在电磁操作设置装置的不工作位置,致动装置处于撤回位置并且在电磁操作设置装置的操作位置处,致动装置处于 阀接触位置。 电磁操作设定装置还具有用于在致动装置处于阀接触位置时操作致动装置以打开和关闭排气门的机构。