CN102400779A - 用于废气门或可变截面涡轮装置的致动器以及致动器在可变截面涡轮装置中的应用 - Google Patents

用于废气门或可变截面涡轮装置的致动器以及致动器在可变截面涡轮装置中的应用 Download PDF

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CN102400779A
CN102400779A CN2011102305528A CN201110230552A CN102400779A CN 102400779 A CN102400779 A CN 102400779A CN 2011102305528 A CN2011102305528 A CN 2011102305528A CN 201110230552 A CN201110230552 A CN 201110230552A CN 102400779 A CN102400779 A CN 102400779A
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tappet
actuator
screw member
wastegate
axle
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CN102400779B (zh
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伯恩哈德·克利普费尔
克里斯托夫·蒂里
亚瑟·雅尼克
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Hanang System Co., Ltd.
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Cooper Standard Automotive Deutschland GmbH
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/22Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00Regulating or controlling by varying flow
    • F01D17/10Final actuators
    • F01D17/105Final actuators by passing part of the fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/14Tappets; Push rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/18Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183Arrangements of bypass valves or actuators therefor
    • F02B37/186Arrangements of actuators or linkage for bypass valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/24Control of the pumps by using pumps or turbines with adjustable guide vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H53/00Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/08Multi-track cams, e.g. for cycles consisting of several revolutions; Cam-followers specially adapted for such cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/40Application in turbochargers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/50Kinematic linkage, i.e. transmission of position
    • F05D2260/57Kinematic linkage, i.e. transmission of position using servos, independent actuators, etc.
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/60Fluid transfer
    • F05D2260/606Bypassing the fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/79Bearing, support or actuation arrangements therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49316Impeller making
    • Y10T29/4932Turbomachine making
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18056Rotary to or from reciprocating or oscillating
    • Y10T74/18296Cam and slide
    • Y10T74/18304Axial cam
    • Y10T74/18312Grooved
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18568Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576Reciprocating or oscillating to or from alternating rotary including screw and nut
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19642Directly cooperating gears
    • Y10T74/19698Spiral
    • Y10T74/19702Screw and nut
    • Y10T74/19744Rolling element engaging thread

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)
  • Transmission Devices (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

一种致动器(10),包括:旋转驱动器(12)和用于把旋转驱动器(12)的旋转运动转换为挺杆(22)的往复运动的螺纹元件(18),所述挺杆与废气涡轮增压器的铰接的废气门(34)和/或可变截面涡轮装置连接,挺杆(22)和/或位于挺杆(22)和螺纹元件(18)之间的轴(40)容置在至少一个导块(24,42)内,所述导块包括至少一个薄片(46)并使得挺杆在至少一个方向(A)上的轻微倾斜或枢转运动,挺杆在薄片和挺杆(22)和/或轴(40)上加宽部分(44,48)之间形成移动。另外,可想到包括旋转驱动器(12)和把旋转驱动器(12)的旋转运动转换为挺杆(22)的往复运动的螺纹元件(18)从而致动废气涡轮增压器的可变截面涡轮装置的致动器(10)的应用。

Description

用于废气门或可变截面涡轮装置的致动器以及致动器在可变截面涡轮装置中的应用
技术领域
本发明涉及一种用于废气门或可变截面涡轮装置的致动器以及致动器在废气涡轮增压器的可变截面涡轮装置中的应用。
通常,废气涡轮增压器具有称作废气门的部件,这样,在特定情况下,热废气不会传到涡轮增压器的涡轮处,从而相应地调节增压。并且,废气门比如可用于转移走热废气,从而对催化转化器进行加热并减少排放的污染物。而且,废气涡轮增压器的特性可通过调节可变截面涡轮装置来调节。
背景技术
通常,现有的气动伺服驱动器已经用作这方面的致动器。
发明内容
本发明的目的在于提供一种改进的致动器以及致动器在废气涡轮增压器的可变截面涡轮装置中的有利应用。
首先,权利要求1所述的致动器解决了该问题。
根据本发明的致动器或伺服驱动器具有旋转驱动器,该旋转驱动器首先可通过插入合适的传动装置来驱动螺纹元件旋转。挺杆与螺纹元件配合并与其以如下的方式啮合,即螺纹元件的旋转运动转换为挺杆的往复运动。挺杆依次与废气涡轮增压器的铰接的废气门和/或可变截面涡轮装置连接。因此,挺杆产生的行程比如用来打开和关闭废气门。
与铰接的废气门或可变截面涡轮装置连接的挺杆和/或位于挺杆与螺纹元件之间的轴容置在至少一个导块内,该导块包括至少一个薄片并使得挺杆在至少一个方向上的轻微倾斜或枢转运动,该挺杆在薄片和挺杆和/或轴上加宽部分之间形成移动。换句话说,导块具有一个或多个薄片,还有至少一个设置在挺杆和/或轴上的加宽部分。这种加宽部分可引导在两个薄片之间,和/或薄片可容置在两个加宽部分之间。在导块/容置器的区域内具有移动,即:可动性,这样,挺杆可至少轻微倾斜或枢转。
在这方面,需要注意的是,上述伺服驱动器的操作原理目前已主要用于阀芯平移的情况,换句话说,在挺杆阀内,废气门通常在其致动的过程中枢转或摆动开并关上。因此,与朝向废气门的废气门合适的连杆连接的挺杆的端点作圆周运动。上述方法有利地使得挺杆相应至少轻微的偏转。因此,把螺纹元件的旋转运动转换成往复运动的挺杆与螺纹元件啮合的点实质上是作为转动基点。从而体现出铰接的废气门的操作原理有利的兼容性。在两个方向上可能形成的偏转比如可以是2mm左右和/或±3°左右。该原理首先可利用挺杆在导向衬套中移动。但是,由于通过耦合废气门或可变截面涡轮装置来限定阀侧面上挺杆的端点,因此这种导向衬套并不是必需的。这样,可在挺杆上去掉导向衬套,而在此可很简单地设置波纹管。另外,可在挺杆和螺纹元件之间的区域,特别是在挺杆上安装的轴的区域对挺杆进行引导,并在挺杆上优选设置与螺纹元件配合的辊子。轴和/或挺杆比如可通过合适的台阶,凹部,突出部等与平移导块上的互补轮廓配合。如下面结合附图的详细描述,可产生轴向和/或径向引导并在各个方向上移动,从而使得发生上述倾斜或枢转运动。
上述致动器的好处是其操作原理在多个方面都进行过试验和测试,但是目前只用在废气再循环阀中。在这方面,特别有利的是其耐热性,特定应用中行程的完好适应性,较大的致动力产生,包括可实现非线性力特性,总体的低摩擦和低磨损设计,以及在新应用中可使用经过验证的个别零件和组件。另外,在本发明的方面,可使用多种节约成本的方法,比如,与废气再循环阀使用相比,可去掉复位弹簧,如废气再循环阀所需可靠密封的情况那样等特定的密封也不用设置,与再循环的非常热的废气相比温度较低的特定的点可使用更节约成本的材料。根据本发明的致动器还可用于所有线性可调节的控制元件,并因此特别是可替换气动和/或真空致动器或类似的致动器。特别是,可通过根据本发明的致动器提高控制质量。
就根据本发明的致动器的详细设计来说,可参考以该申请人名义的欧洲专利申请,申请号:08165906.2和专利EP1526271A1,其就伺服驱动器的设计所公开的内容全部并入本申请的主题中。上述专利申请所述的所有方法还优选用于本申请的致动器中。大约10mm到12mm的行程,特别是11mm左右已被证实对于废气门的使用是有利的。另外,用于废气门的截面条件比如可以是开启角度为20°到25°,特别是22°左右。挺杆(也可称为支杆)的位置比如可优选通过非常精确的非接触式传感器来检测,比如:霍尔传感器。
附加的权利要求书对根据本发明的致动器的优选改进进行了描述。
螺纹元件优选具有至少两个螺距不同的区域,这样,有利的是,可实现非线性力特性。比如,在开始测试阶段,在角度为80°到120°,特别是100°左右的范围内,螺距为3mm到4mm,优选3.5mm到4mm,这被证实是有利的。这种相对较小的螺距意味着在开启操作的初始阶段产生非常大的致动力。这之后接着是螺距为10mm到12mm,特别是11mm左右的角度大约为360°的区域。
如果挺杆相对螺纹元件的轴倾斜,或如优选的情况,在与螺纹元件的有效表面基本垂直的方向上在挺杆和螺纹元件之间产生啮合,则带来的好处是施加给挺杆的力不会引起螺纹元件的意外旋转。
另外,对于防止摩擦,经验证,如果挺杆通过至少一个辊子与螺纹元件配合是有利于防止摩擦的产生。辊子优选为冠状的,这样,有利的是,可以绕辊子的轴以及与其垂直的方向上产生倾斜或枢转运动。在这种情况下,辊子用作球形接头是有利的。
本发明还涉及包括旋转元件和螺纹元件的致动器或伺服驱动器的新应用以把螺纹元件的旋转运动转换为挺杆的往复运动,从而致动废气涡轮增压器的可变截面涡轮装置。因此,如上所述,可使用本新申请的各种优点。
需要指出的是,上文以及下文所述的所有方法还可以有利的方式用于其它平移的控制元件的致动器,比如:阀挺杆,其阀侧面上的端点的位置已经限定,并且,在这方面,本发明并不限于涡轮增压器领域的致动器,比如,在废气再循环阀或另外的阀也可以体现其优点。
附图说明
下面结合附图对本发明的实施例进行详细说明。在附图中:
图1为根据本发明的致动器的透视截面图;
图2为根据本发明的包括与其相连的废气门的致动器的透视图;
图3为根据本发明的致动器的详细视图;和
图4为根据本发明的致动器第二实施例的截面图。
具体实施方式
从图1清楚可见,根据本发明的致动器10具有旋转驱动器12,旋转驱动器的旋转运动如图所示通过合适的传动装置传递到称为螺纹元件18的部件,传动装置包括驱动齿轮14和齿轮16。实质上是螺杆,也可以称为“蜗杆”。螺杆在与旋转驱动器12容置的同一壳体内有利地引导并支撑。从而可有利的去掉单独的轴承。如图所示,螺纹元件18具有大约一个半螺纹并与可旋转安装在位于挺杆22上端的轴40上的辊子20配合。从图中清楚可见,螺纹元件18旋转引起挺杆22直线移动,即,基于图1准线的垂直往复运动。图1的致动器特别适用于铰接的废气门的致动。比如,齿轮16由特殊材料制成,优选合适的塑料或金属。复位弹簧可去掉。与废气再循环阀的致动器或伺服驱动器相比,无需密封螺纹元件18上方(根据图1的准线)的滚珠轴承。也不用在辊子20附近设置衬套。挺杆22的导向衬套24的材质可以是塑料,并通过相对简易的垫圈26密封朝向废气门的导向衬套24的端部。另外,可在垫圈和/或导向衬套24设置波纹管(参看图3和图4)。
图1还示出了位于轴40区域内的导块42,辊子20支撑在轴上。轴40在与辊子20相对的端部设置有加宽部分44,从而形成蘑菇形。导块42在上方区域(根据图1的表示)设置有在平移轴方向上延伸的薄片,即,与挺杆22基本平行,薄片在加宽部分44和由挺杆22连接部而产生的额外加宽部分48之间的区域延伸。由于另一薄片(图1的剖视图)与薄片46相对设置,因此形成轴向和径向的引导(相对轴40)。需要额外说明的是,导块42可整个由塑料制成。另外,挺杆22可延伸直到形成加宽部分48的套管状的轮轴,这就不需要图1所示的处于加宽部分48和挺杆22之间的基本为反L型(L的镜像)连接件。
图2为挺杆22与连杆28的连接示意图,连杆28通过轴30与另一连杆32连接,铰接的废气门34安装在连杆32上。上述由连杆28,32,废气门34以及轮轴30组成的配置绕旋转轴36枢转或铰接。实质上就是朝向废气门34的挺杆22的端点38在横向上至少轻微地移动,即,根据图2的准线与其纵向延伸和上下移动基本垂直的方向。该移动可有利地通过朝废气门34变宽的导向衬套24合适的设计来实现。导向衬套24特别是可以椭圆形的方式变宽。比如在轻微倾斜运动±3°的情况下,辊子20用作枢轴是有好处的(参看图1)。
图3详细示出了导块42。另外,非常明显的是,薄片46和相邻的加宽部分44,48之间的比如零点几毫米,特别是零点三毫米左右的移动是有利的,从而可在箭头A所示的方向上倾斜或枢转运动。另外,也可以通过图3中额外所示的辊子20的优选地冠状轮廓来实现倾斜或枢转运动。由于轴40本身用作倾斜或枢转运动的旋转轴,因此其区域内的径向移动并不是必需的。需要额外说明的是,由于倾斜或枢转运动是绕实轴40区域内根据图3的横轴,因此辊子20通常用作球形接头。另外,对应的自由度可通过密封壳体的波纹管50来实现,从而用实施例中图1所示的移动来替换导向衬套24。图3还示出了阀挺杆20通过用作轮轴的加宽部分48与轴40直接连接,从而在图1所示的加宽部分48和挺杆22之间可去掉连接件。
图4所示的实施例基本上与上述实施例对应。但是,在该实施例中,旋转驱动器12以下面的方式对齐,即,其旋转轴垂直于阀挺杆22延伸。因此,齿轮16(参看图1)在其下侧(朝向挺杆22)设置有与旋转驱动器12的小齿轮52配合的环形轮齿。

Claims (5)

1.致动器(10),包括:旋转驱动器(12)和用于把旋转驱动器(12)的旋转运动转换为挺杆(22)的往复运动的螺纹元件(18),所述挺杆与废气涡轮增压器的铰接的废气门(34)和/或可变截面涡轮装置连接,
其特征在于,挺杆(22)和/或位于挺杆(22)和螺纹元件(18)之间的轴(40)容置在至少一个导块(24,42)内,所述导块包括至少一个薄片(46)并使得挺杆在至少一个方向(A)上的轻微倾斜或枢转运动,并在薄片和挺杆(22)和/或轴(40)上加宽部分(44,48)之间形成移动。
2.根据权利要求1所述的致动器,
其特征在于,螺纹元件(18)具有至少两个螺距不同的区域。
3.根据上述权利要求任一项所述的致动器,
其特征在于,挺杆(22)相对螺纹元件(18)的轴倾斜。
4.根据上述权利要求任一项所述的致动器,
其特征在于,挺杆(22)通过至少一个优选的冠状辊子(20)与螺纹元件(18)配合。
5.包括旋转驱动器(12)和把旋转驱动器(12)的旋转运动转换为挺杆(22)的往复运动的螺纹元件(18)从而致动废气涡轮增压器的可变截面涡轮装置的致动器(10)的应用。
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