CN102818016B - 控制车辆的双离合器变速器的方法 - Google Patents

控制车辆的双离合器变速器的方法 Download PDF

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CN102818016B
CN102818016B CN201110411028.0A CN201110411028A CN102818016B CN 102818016 B CN102818016 B CN 102818016B CN 201110411028 A CN201110411028 A CN 201110411028A CN 102818016 B CN102818016 B CN 102818016B
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shelves position
clutch coupling
slippage
vehicle
clutch
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CN102818016A (zh
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金正喆
朴钟述
田炳昱
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Hyundai Motor Co
Kia Corp
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Kia Motors Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11Stepped gearings
    • B60W10/113Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18Propelling the vehicle
    • B60W30/19Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • 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
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/14Control of torque converter lock-up clutches
    • 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
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/68Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
    • F16H61/684Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
    • F16H61/688Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18072Coasting
    • B60W2030/18081With torque flow from driveshaft to engine, i.e. engine being driven by vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00Input parameters relating to overall vehicle dynamics
    • B60W2520/10Longitudinal speed
    • B60W2520/105Longitudinal acceleration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00Output or target parameters relating to a particular sub-units
    • B60W2710/02Clutches
    • B60W2710/027Clutch torque
    • 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
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02Selector apparatus
    • F16H2059/0252Selector apparatus with means for initiating skip or double gear shifts, e.g. by moving selection lever beyond a threshold
    • 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
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36Inputs being a function of speed
    • F16H59/46Inputs being a function of speed dependent on a comparison between speeds
    • F16H2059/465Detecting slip, e.g. clutch slip ratio
    • 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
    • F16H2306/00Shifting
    • F16H2306/14Skipping gear shift
    • 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
    • F16H2306/00Shifting
    • F16H2306/18Preparing coupling or engaging of future gear
    • 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
    • F16H2306/00Shifting
    • F16H2306/40Shifting activities
    • F16H2306/44Removing torque from current gears
    • 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
    • F16H2306/00Shifting
    • F16H2306/40Shifting activities
    • F16H2306/50Coupling of new gear
    • 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
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04Smoothing ratio shift
    • F16H61/0437Smoothing ratio shift by using electrical signals
    • 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
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/21Providing engine brake control
    • 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
    • Y10T74/19219Interchangeably locked

Abstract

本发明公开了一种控制车辆的双离合器变速器的方法,其响应于车辆的减速而进行经由当前档位来从先前档位换档至随后档位的一系列减档操作,所述方法可以包括:滑脱控制步骤,其对在先前档位已经处于接合状态的离合器持续地进行滑脱控制,并至少持续到随后档位的换档齿轮被接合为止;其中所述滑脱控制步骤包括保持离合器与当前档位的接合状态。

Description

控制车辆的双离合器变速器的方法
技术领域
本发明基本涉及一种控制车辆的双离合器变速器(DCT)的方法,更特别地,本发明涉及这样一种技术,当响应于具有DCT的车辆的减速而进行换档时,其可以防止换档冲击的发生。
背景技术
在下面将参考图1来对具有DCT的车辆进行减速(例如停车)时的DCT的减档过程进行描述。
图1显示了当包括有第一输入轴和第二输入轴(该第一输入轴和第二输入轴分别联接至第一离合器和第二离合器)的DCT车辆减速时,经由当前档位N而从先前档位N+1减档至随后档位N-1的过程。当处于当前档位N时,在先前档位N+1已经处于接合状态的第一离合器被释放,并且第二离合器接合从而使扭矩传输。之后,以此相反,当处于随后档位N-1时,第一离合器进入被接合的状态从而使扭矩传输,并且第二离合器被释放。
为了从当前档位N切换至随后档位N-1,在接合第一离合器并释放第二离合器之后,同步器进行同步以接合随后档位N-1的换档齿轮,从而使得动力通过随后档位N-1的换档齿轮来进行传输。
然而,在进行随后档位N-1的换档齿轮的接合的同步期间,可能会发生换档冲击。具体来说,如果当接合随后档位N-1的换档齿轮时第一输入轴的rpm(每分钟转数)低于输出轴的rpm,那么在同步完成或者从输入轴到输出轴的动力传输开始时,与输入轴和输出轴之间的动力传输相关的元件的齿侧间隙(backlash)(当同步发生以接合随后档位N-1的换档齿轮的时,该齿侧间隙已经排列在一个方向上)会在相反的方向上重新排列。在此时,会产生换档冲击和噪音。
换句话说,在用于接合随后档位N-1的换档齿轮的同步期间,如果联接到第一离合器的第一输入轴的rpm比输出轴的rpm低,那么当同步开始以进行套筒的移动时,则会在第一输入轴被操作的方向上从输出轴施加扭矩。在此时,与从输出轴至第一输入轴的动力传输路径相关的各个元件(例如轮毂、套筒、换档齿轮等等)的齿侧间隙在一个方向上排列。
随后,当套筒进一步移动时,套筒经过同步器环和键(key)。因此,套筒推动同步器环的压缩力被移除,导致同步的瞬间故障。
在发生同步的瞬间故障的期间,如果不存在由于第一输入轴的旋转而引起的摩擦阻力,那么第一输入轴可能会自由地旋转并在同步状态时保持rpm。因为车辆减速,所以输出轴的rpm减小。因此,刚好在已经进一步移动的套筒与离合器齿轮接合之前,第一输入轴的rpm超过了输出轴的rpm。
在这种状态下,如果套筒刚好移动并与离合器齿轮接合,那么扭矩在第一输入轴使输出轴旋转的方向上施加至各元件,该第一输入轴比输出轴更快。因而,当同步开始时已经在一个方向上排列的各元件的齿侧间隙(backlash)会在相反的方向上重新排列。因为这样的现象,已经处于高速旋转的第一输入轴和输出轴之间的相应的元件会彼此碰撞,从而会产生冲击和噪音。
在上述传统技术的过程期间引起的这样的换档冲击和噪音会使车辆的静音性变差,并让使用者感觉不适,从而降低车辆的适销性。
作为参考,图1的圆形部分A显示了当从当前档位N切换至随后档位N-1时第一输入轴产生的冲击和噪音,圆形部分B显示了从随后档位N-1切换至更低的随后档位时第二输入轴引发的冲击和噪音。
公开于该发明背景技术部分的信息仅仅旨在加深对本发明的一般背景技术的理解,而不应当被视为承认或以任何形式暗示该信息构成已为本领域技术人员所公知的现有技术。
发明内容
本发明的各个方面致力于提供一种控制车辆的双离合器变速器的方法,其使得当响应于车辆减速而从当前档位换档至更低的目标档位时,由输入轴和输出轴之间的各元件之间产生齿侧间隙所引发的换档冲击和噪音能够被防止;因此,档位切换的品质提高,从而增加了车辆的静音性和驾驶舒适性,并且增加了车辆的适销性。
一种控制车辆的双离合器变速器的方法,其响应于车辆的减速而进行经由当前档位来从先前档位换档至随后档位的一系列减档操作,所述方法可以包括:滑脱控制步骤,其对在先前档位中可以已经处于接合状态的离合器持续地进行滑脱控制,并至少持续到随后档位的换档齿轮可以被接合为止。
所述滑脱控制步骤可以包括:保持离合器与所述当前档位的接合状态。
所述滑脱控制步骤可以包括:响应于车辆的减速率而滑脱控制离合器,以控制通过离合器而传输的扭矩的量。
所述滑脱控制步骤可以包括:滑脱控制离合器,从而随着车辆的减速率增加而使通过离合器来传输的扭矩的量可以增加。
所述滑脱控制步骤可以包括:在贯穿从当前档位换档到随后档位的过程中,持续地滑脱控制在先前档位中可以已经处于接合状态的离合器。
通过纳入本文的附图以及随后与附图一起用于说明本发明的某些原理的具体实施方式,本发明的方法和装置所具有的其它特征和优点将变得清楚或更为具体地得以阐明。
附图说明
图1是显示了根据传统的技术控制车辆的双离合器变速器(DCT)的方法的视图。
图2是根据本发明示例性实施方式的控制车辆的双离合器变速器的方法的流程图。
图3是显示了根据本发明示例性实施方式的控制车辆的双离合器变速器的方法的视图。
应当了解,所附附图并非按比例地显示了本发明的基本原理的图示性的各种特征的略微简化的画法。本文所公开的本发明的具体设计特征包括例如具体尺寸、方向、位置和外形将部分地由具体所要应用和使用的环境来确定。
在这些附图中,贯穿附图的多幅图形,附图标记引用本发明的同样的或等同的部分。
具体实施方式
现在将对本发明的各个实施方式详细地作出引用,这些实施方式的实例被显示在附图中并描述如下。尽管本发明将与示例性实施方式相结合进行描述,但是应当意识到,本说明书并非旨在将本发明限制为那些示例性实施方式。相反,本发明旨在不但覆盖这些示例性实施方式,而且覆盖可以被包括在由所附权利要求所限定的本发明的精神和范围之内的各种选择形式、修改形式、等价形式及其它实施方式。
在下文中,将参考所附附图对本发明的实施方式进行详细的描述。
参考图2和图3所示,当响应于车辆减速而进行经由当前档位N从先前档位N+1换档到随后档位N-1的一系列减档操作的时候,本发明提供了一种根据本发明示例性实施方式的控制车辆的双离合变速器(DCT)的方法。本发明的方法包括:滑脱控制步骤S10,其持续地滑脱控制(slip-control)在先前档位N+1中就已经处于接合状态的离合器,并至少持续到随后档位N-1的换档齿轮被接合为止。
具体而言,当换档至随后档位N-1时,在先前档位N+1就已经处于接合状态的离合器(第一离合器)被滑脱控制,而不是在当前档位N中被完全地释放。因而,当通过由离合器进行良好的扭矩传输而使联接到离合器的相应的输入轴的rpm保持比输出轴的rpm高的同时,档位被切换到随后档位N-1。因此,本发明能够防止传统技术中由于齿侧间隙的排列在相反方向进行转换所引起的换档冲击和噪音。
在滑脱控制步骤S10中,响应于车辆的减速,由离合器传输的扭矩的量通过滑脱控制离合器而进行控制。例如,随着车辆的减速率增大,由离合器传输的扭矩的量通过滑脱控制离合器而增加或减小,从而使齿侧间隙的变化最小化,并且使阻尼效果增大。
如图3所示,在滑脱控制步骤S10中,在先前档位N+1已经处于接合状态的离合器(第一离合器)被滑脱控制,直到随后档位N-1的换档齿轮被接合之后为止。在贯穿从当前档位N换档到随后档位N-1的过程中,滑脱控制持续被执行。
如此,当处于当前档位N时,如果在先前档位N+1已经处于接合状态并且在随后档位N-1即将进入接合状态以传输动力的离合器(第一离合器)被进行滑脱控制,那么联接至离合器的输入轴(第一输入轴)的rpm至少等于或高于处于减速中的输出轴的rpm。因而,在进行同步以将随后档位N-1的换档齿轮进行接合从而换档至随后档位N-1的同时,在输入轴操作输出轴的方向上施加了扭矩。之后,即使当经过同步故障部段之后套筒完全地与随后档位N-1的换档齿轮接合时,输入轴的rpm也会比处于减速中的输出轴的rpm高,并且扭矩仍然会在输入轴操作输出轴的方向上被施加。因此,与动力传输相关的输入轴和输出轴之间的各元件的齿侧间隙排列能够保持在稳定的状态,而不会在换档操作期间改变方向,从而防止换档冲击或噪音发生。
当然,即使当从随后档位N-1换档至更低的随后档位时,上述的换档操作也可以采用相同的方式执行。
如上所述,在根据本发明示例性实施方式的控制车辆的双离合器变速器(DCT)的方法中,当响应于车辆减速从当前档位换档至更低的目标档位时,由输入轴和输出轴之间的各元件之间产生齿侧间隙所引发的换档冲击和噪音能够被防止。因此,档位切换的品质提高,从而增加了车辆的静音性和驾驶舒适性,并且增加了车辆的适销性。
前面对本发明具体示例性实施方式所呈现的描述是出于说明和描述的目的。前面的描述并不想要成为毫无遗漏的,也不是想要把本发明限制为所公开的精确形式,显然,根据上述教导很多改变和变化都是可能的。选择示例性实施方式并进行描述是为了解释本发明的特定原理及其实际应用,从而使得本领域的其它技术人员能够实现并利用本发明的各种示例性实施方式及其各种选择形式和修改形式。本发明的范围意在由所附权利要求书及其等效形式所限定。

Claims (5)

1.一种控制车辆的双离合器变速器的方法,其响应于车辆的减速而进行经由当前档位从先前档位换档至随后档位的一系列减档操作,所述方法包括:
滑脱控制步骤,其对在所述先前档位中已经处于接合状态的离合器持续地进行滑脱控制,并至少持续到随后档位的换档齿轮被接合为止;
其中所述滑脱控制步骤包括:响应于车辆的减速率而滑脱控制离合器,以控制通过离合器而传输的扭矩的量。
2.根据权利要求1所述的控制车辆的双离合器变速器的方法,其中所述滑脱控制步骤包括:保持所述离合器与所述当前档位的接合状态。
3.根据权利要求1所述的控制车辆的双离合器变速器的方法,其中所述滑脱控制步骤包括:滑脱控制所述离合器,从而随着车辆的减速率增加而使通过离合器而传输的扭矩的量得到增加。
4.根据权利要求1所述的控制车辆的双离合器变速器的方法,其中所述滑脱控制步骤包括:在贯穿从当前档位换档到随后档位的过程中,持续地滑脱控制在先前档位已经处于接合状态的离合器。
5.一种控制车辆的双离合器变速器的方法,其响应于车辆的减速而进行经由当前档位来从先前档位换档至随后档位的一系列减档操作,所述方法包括:
在先前档位已经处于接合状态的离合器被滑脱控制,而不是在当前档位将离合器完全地释放,并至少保持到随后档位被接合为止,从而通过由离合器进行良好的扭矩传输以使得在联接到离合器的相应的输入轴的rpm被保持为等于或高于输出轴的rpm的时候,使档位被切换到随后档位。
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