CN101879898B - 混合动力车辆的引擎重新启动过程中的变速器接合控制 - Google Patents

混合动力车辆的引擎重新启动过程中的变速器接合控制 Download PDF

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CN101879898B
CN101879898B CN201010153981.5A CN201010153981A CN101879898B CN 101879898 B CN101879898 B CN 101879898B CN 201010153981 A CN201010153981 A CN 201010153981A CN 101879898 B CN101879898 B CN 101879898B
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engine
gear
power
clutch
change
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CN101879898A (zh
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伊哈布·S·苏里曼
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Ford Global Technologies LLC
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • B60Y2400/428—Double clutch arrangements; Dual clutches
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Transmission Device (AREA)

Abstract

一种用于在混合动力传动系统中在重新启动引擎时控制离合器接合的方法，其包含：在前进档位置和倒档位置之间移动变速杆，应用电力驱动辅助泵，辅助泵的输出使变速器接合与变速杆位置、满行程、零最大扭矩对应的档位，接近离合器对应所述档位，开始重新启动，并停止应用辅助泵。

Description

混合动力车辆的引擎重新启动过程中的变速器接合控制
技术领域
本发明总体上涉及用于混合动力车辆(HEV)的动力传动系统，尤其涉及在引擎重新启动前对从前进挡转换到倒档(drive-to-reverse)或从倒档转换到前进挡(reverse-to-drive)的变速器的控制。
背景技术
混合动力车辆(HEV)是一种具有混合推进系统的车辆，其利用至少两种不同来源的扭矩来推动车辆。例如一个非限制性的示例，混合推进系统可以结合传统的推进系统和电力推进系统，传统的推进系统包括内燃机和分级速比自动变速器，电力推进系统包括一或多个电动机和可再充电的能量储存装置，例如电池，其可以驱动电动机或储存能量，以改良传统车辆的燃料经济性。混合动力车辆典型地提供不同的动力传动系统运行模式，其中引擎根据车辆运行条件、电池条件和驾驶者的推进请求运行或关闭。因此，HEV提供的一个主要功能是在一定的状况下启动或停止引擎的能力。当引擎运行时，推进系统的电动部分可以用于辅助引擎提供所需要的车辆推进。在引擎关闭的状况下，驾驶者的推进请求可以完全由电动机提供。
机动车辆可以设计为采用某方面的混合动力技术来降低燃料消耗，而不使用混合动力传动系统。在称为“微型HEV”这样的车辆中，在包括内燃机和分级速比自动变速器的传统动力传动系统中，在引擎处于怠速运行条件时，关闭引擎将会降低燃料消耗和降低排放，但没有电机来驱动车轮。在停止引擎前由微型HEV动力传动控制系统检测的主要条件是驾驶者已经应用制动且车辆已停止，因为在传统车辆中引擎在这些条件下将典型地处于怠速状态。一旦驾驶者松开制动踏板表示车辆推进请求，动力传动控制系统将自动重新启动引擎。
如图1和图2所示，在采用有用于引擎启动/停止增强的启动器电动机的内燃机和双离合器(DCT)自动变速器的微型HEV应用中，在引擎重新启动时以响应、一致或可预测的方式为车辆提供推进是很重要的。由于变速器接合和离合器最大扭矩的应用引起的延迟将直接导致车辆推进响应不足。
过早的应用离合器最大扭矩也可以导致动力传动系统扭矩振动，导致引擎重新启动时潜在的引擎失速。另外，如果在引擎重新启动时或重新启动后，变速器接合的感觉太生硬，则驾驶者将感觉到不良的车辆性能。温度和其它的环境条件可以进一步放大这些问题。
用于微型HEV动力传动系统的动力传动控制系统也必须在引擎关闭时变速杆从前进档位置移到倒档位置或从倒档位置移动到前进档位置后，在引擎重新启动时，对车辆的推进请求提供迅速的响应。
例如，在引擎停止情况下，变速杆位于前进档，制动踏板被踩下，驾驶者可以使变速杆移动到倒档，而持续踩下制动踏板，从而使车辆在停止时保持引擎关闭。假设这种条件下：如果引擎关闭、车辆停止时变速器没有接合到倒档，在驾驶者将变速杆移动到倒档位置的时候，只要驾驶者松开制动并启动引擎车辆推进就将过分延迟。过分的车辆推进延迟是由于直到引擎启动时才将变速器延迟接合到倒档。在一档和倒档应用在同一轴上(例如奇轴)的DCT应用中，如果变速器是在引擎启动时而非变速杆被选择到倒档时接合到倒档，则必须将DCT内的变速箱转换同步装置从一档解离，而接合到倒档，然后必须在施加任何离合器扭矩前使离合器充满(液压液)并满行程。在一档和倒档应用在不同的轴上(例如，一档在奇轴，倒档在偶轴)的DCT应用中，变速箱转换同步装置必须接合到倒档，而在施加任何离合器扭矩前离合器必须充满(液压液)并满行程。
由于施加离合器扭矩才可以提供车辆推动力，变速箱接合和离合器启动的延迟直接导致车轮扭矩延迟和不良的车辆推进响应。
需要一种动力传动系统控制策略，以使具有双离合器变速器的微型HEV避免这一问题。
发明内容
一种在混合动力传动系统中用于控制引擎重新启动的方法，其包括：(a)使变速杆从前进档移动到倒档，或者使变速杆从倒档移动到前进档；(b)解离离去离合器和前进档或倒档；(c)应用电力驱动辅助泵，辅助泵的输出使变速器接合倒档或前进档，并使最大扭矩满行程或使最大扭矩为零，接近离合器连接引擎和倒档或前进档；(d)开始重新启动；(e)在引擎启动后(怠速)停止应用辅助泵，及(f)增加接近离合器最大扭矩，以在引擎启动后连接引擎和倒档或前进档。
本发明还提出一种混合动力传动系统，其包括：档位选择器；变速器(其包括离去离合器、接近离合器、一档和二档)；制动和加速器踏板；电力源；由电力源驱动并连接到变速器的辅助泵；启动器电动机，其由电力源驱动并连接到引擎；及控制器，其设置为停止引擎，解离离去离合器和一档，启动辅助泵，将辅助泵产生的输出应用于接合二档并使接近离合器满行程(stroke the oncoming clutch)，驱动启动器以启动引擎。
控制策略使接近输入离合器满行程，并在开始重新启动之前接合要接近的档。因此，控制系统在引擎关闭时变速杆从前进档位置移到倒档位置或从倒档移动到前进档后，引擎重新启动时，对车辆推进请求提供及时的响应。
优选实施例的应用范围在下述的详细说明、权利要求和附图中将显而易见。应当理解到的是，说明和具体的示例尽管已经显示本发明的优选实施例，但仅通过示例的方式给出。对所述的实施例和示例的各种变化和更改对本技术领域的技术人员来说是显而易见的。
附图说明
参照下述的说明并结合附图，将更加容易地理解本发明，其中：
图1是微型HEV动力传动系统的示意图；
图2是表示图1的动力传动系统的扭矩和电力流的示意图；
图3是表示某些动力传动系统的变量在前进档-倒档转换接合和控制引擎重新启动时变化的曲线图；
图4表示用于控制引擎重新启动的运算法则的步骤的逻辑流程图；
图5是表示双输入离合器动力换档变速器的动态细节的示意图。
具体实施方式
现在参照图1和图2，图1的微型HEV动力传动系统10包括：动力源12，例如为内燃机；增强的引擎启动器电动机14；双离合器自动变速器16，其通过输入轴17和离合器18、20连接到引擎；轴36，其包含奇数的1档、3档、5档和倒档；轴37，其包含偶数的2档、4档和6档；变速器输出22；最终传动机构24，其连接到输出22；电辅助液压泵(EAUX)25，其输出对变速器16的液压系统加压；电储存电池26，其将电力供应到泵25和启动器14；及轮轴28、29，其可驱动地连接到驱动轮30、31。
图2表示引擎输出扭矩TENG，和增强的启动器电动机14产生的扭矩TSTARTER在接点34结合，而生成引擎曲轴扭矩TCRK。变速器输出扭矩TOUT由变速器16传动到最终传动和差速器24，最终传动和差速器24包括内轮差速器机构。来自电池26的电力PBAT供应到接点38，从这里，电力PEAUX分配到EAUX 25，启动器动力PSTARTER分配到启动器14。交流发电机40因引擎扭矩TAL而生成的电力PALT输出传送到接点38。
变速器控制模块(TCM)42由电池26提供动力，其接收信号并将其发送到EAUX泵25和变速器16，并从变速杆44接收输入信号，变速杆44在自动模式通道46的(P)ARK(泊车)，(R)REVERSE(倒车)，(N)EUTRAL(空档)，(D)RIVE(前进)位置之间移动，在手动模式通道48的升档(+)和降档(-)位置之间移动。引擎控制模块(ECM)50由电池26提供动力，其接收信号并将其发送到启动器14和引擎12，并从加速器和制动踏板52、54接收输入信号。
下述的实施例包含变速杆44在引擎12关闭时和在请求引擎重新启动之前从(D)(挂档)位置到(R)(倒档)位置的运动。变速器16并非一直等到发生引擎重新启动请求以将变速器转换到倒档，而是在变速杆44由车辆驾驶者手动从D位置移动到R位置时转换到倒档，此时引擎关闭。由电辅助泵(EAUX)25产生的液管压在引擎关闭时启动同步装置，其解离前进档并接合倒档。此外，引擎关闭时，如果齿轮箱转换到所需要的倒档，与从引擎12到变速器的倒档路线传输电力关联的输入离合器18或20迅速用液压液充满并满行程，从而使变速器在启动引擎重新启动请求时准备好响应扭矩传输。使离合器18、20满行程使离合器活塞和离合器片单元之间的间隙以及离合器单元之间的间隙减缩，使得最大扭矩在TCM42指令时可以迅速增加，而不会有任何附加的延迟。
图3包含的曲线图表示某些动力传动系统的变量在引擎关闭、随后由车辆驾驶者开始重新启动引擎时前进档-倒档转换接合时的变化。
曲线54表示应用制动踏板52，其在56松开，其在倒档时启动车辆缓行。曲线58表示引擎12关闭时变速杆44从D转换到R位置时的位置变化。曲线60表示车辆速度，其示出车辆在引擎在62停止前车辆减速，当输入离合器最大扭矩随着引擎重新启动而增加时，车辆缓行64。曲线66表示引擎12的启动、停止和重新启动请求的状态。
曲线68表示引擎速度，其示出当引擎在62停止时引擎速度从怠速降低到零速度，以及启动器14发动引擎时引擎速度在引擎重新启动70开始增加。引擎速度持续增加到第一引擎燃烧74，其在引擎燃烧持续和引擎怠速时间段76保持相对稳定。
曲线78表示变速器输入17的速度，及与倒档关联的接近输入离合器18、20的速度。接近离合器的速度在时间段80中因离合器获得最大扭矩而增加，并随后保持稳定。输入离合器的滑移示于82。
曲线84表示接近输入离合器18、20中的压力。接近离合器压力在时间段86里较低，离合器满行程，离合器最大扭矩为零，变速器接合一档。离合器在88零行程，并保持在零压，此时变速箱从一档解离，接合到倒档。然后接近离合器压力增加，以充满离合器，并在离合器满行程期间的时间段90中降低到低压，在引擎在70和74重新启动期间离合器最大扭矩为零。接近离合器压力在离合器最大扭矩增加的时间段92增加，以在倒档产生车辆缓行64。
曲线94表示变速器液管压，96表示由电辅助泵25产生的最大压力。变速器管压94在时间段98降低到在引擎停止时仅由电辅助泵即足够保持离合器满行程的水平。变速器管压在时间段100增加到最大电辅助泵压96，此时在102泵的负载循环达到90％以上，从而启动变速器接合到倒档和要充满(液压液)的接近离合器。变速器管压94在泵的负载循环25在106达到20％时降到104，从而使接近离合器满行程。然后离合器管压94增加到由位于变速器16中的机械泵生成并由引擎12在其重新启动时驱动的恒量98。在110，在重新启动并持续引擎燃烧之后，关闭电辅助(EAUX)泵25。
曲线112表示电辅助(EAUX)泵25的开-关状态，和PWM(脉冲宽度调制)控制电辅助(EAUX)泵25的负载循环，其在负载循环百分数为20％的时间段114产生少量的压力，此时引擎12关闭，离合器满行程。在116，由泵25产生的压力增加，以响应增加的大于90％的电辅助泵负载循环，从而允许变速器接合到倒档，并在引擎关闭时充满接近离合器。
曲线120表示变速器16在奇轴36上在时间段122从一档转换到倒档，以响应变速杆44在引擎关闭时从D位置移动到R位置。曲线126示出包含偶数齿轮的轴37未受到变速杆44的D-R移动的影响，以及用于此双离合器变速器实例的引擎重新启动控制策略。
图4表示用于在引擎重新起动之前、之中和之后控制双离合器变速器接合和电辅助泵的运算法则步骤的逻辑流程图。在步骤130，进行测试来确定引擎12是否在运行。如果测试130的结果是逻辑真，在步骤132，关闭EAUX泵25，控制回到步骤130。如果测试130的结果是逻辑假，在步骤134，若还未打开EAUX泵，则打开EAUX泵25。
在步骤136，进行测试以确定引擎是否已停止或正在停止。如果测试136的结果是真，在步骤138，进行测试以确定变速杆44是否从D移动到R位置，或从R移动到D位置。如果测试138的结果是真，在步骤140，EAUX泵25的负载循环百分数增加到最大负载循环，从而提供由泵产生的最大压力。
在步骤142，接近输入离合器18、20零行程，并完全解离。
在步骤144，进行测试以确定接输入近离合器18、20是否零行程并完全解离。如果测试144的结果是假，控制回到步骤142。
如果测试144的结果是真，在步骤146，如果变速杆44已经从D位置移动到R位置，变速器从一档转换到倒档。可选择地，在步骤146，如果变速杆44已经从R位置移动到D位置，变速器从倒档转换到一档。
在步骤148，进行测试以确定在步骤146指示的变速器档位变化是否已经完成。如果测试148的结果是假，控制回到步骤146。如果测试148的结果是真，控制继续到步骤150。
在步骤150，接近输入离合器18、20充满(液压液)并满行程。
如果测试136的结果是假，或者测试138的结果是假，或者在执行步骤150之后，在步骤152，变速器电辅助泵25的压力控制到用于使接近输入离合器18、20满行程的水平。
步骤152之后，在步骤154，接近输入离合器18、20维持在满行程压力，其最大扭矩维持在实质上为零。
尽管相对于变速杆44的D-R或R-D转换说明了控制策略，该策略也可以应用于任何变速杆接合请求，即，变速杆44在其任意位置之间的移动，包括但不限于D-R，R-D，R-L，L-R，此时引擎是关闭的。例如，相同的步骤可以应用于引擎关闭时变速杆44的R-D移动，在这种情况下，变速器将从倒档转换到一档。
图5是对双输入离合器的具体说明，动力换挡变速器16包括第一输入离合器18和第二输入离合器20，第一输入离合器18可选择地将变速器的输入17交替地连接到奇数前进档36和关联第一副轴244的倒档298，第二输入离合器20可选择地将输入17交替地连接到关联第二副轴249的偶数档37。
副轴244支承小齿轮260、262、264和耦合器266、268、302，每一个小齿轮260、262、264都颈接在轴244上，耦合器266、268、302固定到轴244。小齿轮260、262、264分别关联一档、三档和五档。耦合器266包括套筒270，其可以向左移动，以啮合小齿轮260，并可驱动地将小齿轮260连接到轴244。耦合器268包括套筒272，其可以向左移动，以啮合小齿轮262，并可驱动地将小齿轮262连接到轴244，并可以向右移动，以啮合小齿轮264，并可驱动地将小齿轮264连接到轴244。
副轴249支承小齿轮274、276、278和耦合器280、282，每一个小齿轮274、276、278都颈接在轴249上，耦合器280、282固定到轴249。小齿轮274、276、278分别关联二档、四档和六档。耦合器280包括套筒284，其可以向左移动，以啮合小齿轮274，并可驱动地将小齿轮274连接到轴249。耦合器282包括套筒286，其可以向左移动，以啮合小齿轮276，并可驱动地将小齿轮276连接到轴249，并可以向右移动，以啮合小齿轮278，并可驱动地将小齿轮278连接到轴249。
变速器输出22支承齿轮288、290、292，其每一个都固定到输出轴24。齿轮288啮合小齿轮260和274。齿轮290啮合小齿轮262和276。齿轮292啮合小齿轮264和278。
反转齿轮296颈接到副轴244，其啮合空转轮298，空转轮298啮合固定到输出轴22的反转齿轮300。耦合器302选择性地将反转齿轮296连接到副轴244。
耦合器266、268、280、282和302可以是同步装置，或爪形离合器或其组合。
变速杆44从D移动到R后引擎重新启动时，离合器18在一档解离时首先是离去离合器，其在倒档接合后还是接近离合器，因为一档和倒档都可以可驱动地连接到同一副轴244。变速杆44从R移动到D后引擎重新启动时，离合器18在倒档解离时首先是离去离合器，其在一档接合后还是接近离合器，因为一档和倒档都可以可驱动地连接到同一副轴244。
根据专利法的规定，已经说明了优选的实施例。但是，应当注意的是，还可以实施其它与具体表示和说明的实施例不同的替换实施例。

Claims (7)

1.一种用于混合动力传动系统中在引擎重新启动时控制变速器接合的方法，包含以下步骤：
(a)停止引擎；
(b)应用电力驱动辅助泵，该辅助泵的输出使双输入离合器变速器接合到与变速杆位置、满行程、零最大扭矩对应的档位，接近输入离合器对应所述变速器的档位，所述接近输入离合器连接引擎和所述档位；
(c)开始引擎重新启动；及
(d)停止应用辅助泵。
2.根据权利要求1所述的方法，其特征在于，进一步包含：
应用变速器使接近离合器的最大扭矩增加到请求的最大扭矩。
3.根据权利要求1所述的方法，其特征在于，步骤(c)进一步包含释放制动踏板和踩压加速器踏板之一，以开始重新启动。
4.根据权利要求1所述的方法，其特征在于，进一步包含：
通过应用轮制动器停止车辆，以响应踩压制动踏板；及
释放加速器踏板。
5.根据权利要求1所述的方法，其特征在于，进一步包含：
在执行步骤(b)之前解离离去离合器并解离离去齿轮。
6.根据权利要求1所述的方法，其特征在于，进一步包含：
将变速杆从前进挡位置移动到倒档位置；
解离离去离合器；及
解离前进档齿轮。
7.根据权利要求1所述的方法，其特征在于，进一步包含：
将变速杆从倒档位置移动到前进档位置；
解离离去离合器；及
解离倒档齿轮。
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