CN101514748A - 校准自动变速器的方法 - Google Patents

校准自动变速器的方法 Download PDF

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Publication number
CN101514748A
CN101514748A CNA2009101307482A CN200910130748A CN101514748A CN 101514748 A CN101514748 A CN 101514748A CN A2009101307482 A CNA2009101307482 A CN A2009101307482A CN 200910130748 A CN200910130748 A CN 200910130748A CN 101514748 A CN101514748 A CN 101514748A
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CN
China
Prior art keywords
tcc
pressure
converter clutch
minimum
torque converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2009101307482A
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English (en)
Inventor
戴维·赖特
帕斯卡尔·蒂索特
文森特·霍尔茨
尼古拉斯·迪斯
帕特里克·德罗马德
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Publication of CN101514748A publication Critical patent/CN101514748A/zh
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H61/14—Control of torque converter lock-up clutches
    • F16H61/143—Control of torque converter lock-up clutches using electric control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • F16H2061/064—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means for calibration of pressure levels for friction members, e.g. by monitoring the speed change of transmission shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2342/00—Calibrating
    • F16H2342/04—Calibrating engagement of friction elements

Abstract

本发明涉及一种校准具有变矩器离合器的自动变速器的方法。在不改变所有产品的变矩器离合器性能的情况下，为了避免在命令压力为0时变矩器离合器仍然工作，探测变矩器离合器最小偏置传动并且只有在这些变速器情况下，扭矩转换离合器的最小夹紧压力才以压力步长减小而变矩器离合器惯性滑行适应参考单元增大。

Description

校准自动变速器的方法
技术领域
本发明涉及一种校准具有变矩器离合器的自动变速器的方法。
背景技术
在一些变速器中，纵然命令压力为0kPa变矩器离合器(TCC)仍然能工作，这将影响TCC的性能。该问题将导致TCC在低扭矩时发生窜动现象(发动机速度波动)。这也将降低在惯性滑行(coast)状态下电控转换器离合器(缩写为EC3，其表示控制变矩器离合器从而调整变矩器)的性能。
一种现有的校准方法是称为TCC瞬时关闭低扭矩特性的方法，其通过释放TCC(关模式)解决窜动问题，但是这样也不能满足使用者对惯性滑行EC3性能的期望，因此这也是不足的。
另一种方法是基于对具有最小TCC偏置的变速器进行重新调整校准。这样在具有最小TCC偏置(少量输出)的变速器上能解决惯性滑行EC3性能和窜动问题，但是会破坏“标称偏置”变速器的TCC性能(多数输出)。该具有最小TCC偏置的变速器即使在最小压力的情况下其TCC也能传递扭矩。
在EP1739329A2中，连接车辆的发动机和变速器的变矩器具有锁止离合器且设计控制器利用目标滑移转速，在转换到对接合力进行反馈控制前，可以在开环控制下增加锁止离合器的接合力。在开环控制下当发动机的扭矩快速减小时，该控制器根据发动机的输出扭矩的变化值减小接合力，由此阻止由于减小发动机输出扭矩而使锁止离合器产生无意的突然的接合。
文献JP2005291345A描述了用于自动变速器的控制装置，该变速器具有：用于探测变矩器的输入扭矩的输入扭矩探测装置，用于当结束锁紧锁止离合器时根据输入扭矩计算真实压差的真实压差计算装置；用于计算压差命令值和当结束锁紧锁止离合器时的真实压差值之间的差值并将该差值作为学习值的学习值计算装置；和用于存储与压差命令值相关的学习值的学习值存储装置。学习校正装置可以通过从学习值存储装置中读取与压差命令值相应的学习值校正压差命令值。
发明内容
本发明的目的是为了在不改变所有产品的变矩器离合器性能的情况下避免在命令压力为0时变矩器离合器仍然工作。
本发明的目的是这样实现，探测变矩器离合器最小偏置传动(transmissions)并且只有在这些传动的情况下，变矩器离合器的最小夹紧压力才以压力步骤减小而变矩器离合器惯性滑行适应参考单元才增大。
本发明的学习能力基于下面事项而实现：变矩器离合器(TCC)最小偏置(“TCC最小偏置”)传动的特征在于，在任何条件下对于给定的VBS压力命令都具有较高的TCC应用压力(实际TCC压力)。该变矩器离合器适应并自学习从而降低TCC应用压力。
附图说明
下面将结合示意性表示本发明的下述附图1详细描述本发明。
图1示意性地示出本发明的实施方式。
具体实施方式
从图1中可看到，在第一步中将探测变矩器离合器最小偏置(TCC最小偏置)传动。变矩器离合器(TCC)最小偏置(“TCC最小偏置”)传动的特征在于在任何条件下，对于给定的VBS压力命令，都具有较高的TCC应用压力(实际TCC压力)。该变矩器离合器适应并自学习从而降低TCC应用压力。
因此，当TCC惯性滑行适应单元(通过校准指定)比阈值P1threshold(校准值～10kpa)低时就探测最小偏置。
那么，如果在惯性滑行EC3模式下计算TCC压力减小到P2threshold(校准值～2kpa)并持续时间长于T2threshold(校准值～0.5s)并且适应单元比阈值P1threshold(～10kpa)低，则TCC最小夹紧压力就以压力步骤减小。同时，TCC惯性滑行适应参考单元也重置到压力P1threshold+P3threshold(校准值+～10kpa)。
TCC压力换算表(未示出)将可变排出电磁阀(VBS)的命令压力转换成相应的计算TCC压力。该已知表可以由新的区域转化和完成从而用于最低计算压力。作为转换表的结果，惯性滑行适应单元值被偏置从而保持相同的实际TCC压力用于给定的计算TCC压力。这种新的增加只能通过减小TCC最小夹紧压力(学习之前初始设置在～20kpa)而得到。因此，如果“TCC最小偏置”传动被探测，TCC最小夹紧压力将减小，然后将允许一个更低的VBS压力命令(新扩展表区域)。
根据本发明，TCC最小夹紧力将保持在它的初始值，这样“TCC最小偏置”传动的再校准对其他的产品就没有不好的影响。只有“TCC最小偏置”传动将学习更小的TCC最小夹紧压力。

Claims (2)

1.一种具有变矩器离合器的自动变速器的校准方法，其特征在于：探测变矩器离合器最小偏置传动，并且只在这些传动的情况下，变矩器最小夹紧压力以压力步骤减小而变矩器惯性滑行适应参考单元增加。
2.根据权利要求1的方法，其特征在于，当TCC惯性滑行适应单元低于阈值P1threshold时，探测最小偏置。
CNA2009101307482A 2008-02-01 2009-02-01 校准自动变速器的方法 Pending CN101514748A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08001886A EP2085660A1 (en) 2008-02-01 2008-02-01 Process for calibrating an automatic transmission
EP08001886.4 2008-02-01

Publications (1)

Publication Number Publication Date
CN101514748A true CN101514748A (zh) 2009-08-26

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US (1) US8280600B2 (zh)
EP (1) EP2085660A1 (zh)
CN (1) CN101514748A (zh)
RU (1) RU2009103156A (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8276439B2 (en) * 2010-05-13 2012-10-02 GM Global Technology Operations LLC System and method for determining a volume of a torque converter clutch and calibrating a transmission

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410223A2 (en) * 1989-07-24 1991-01-30 Ford-Werke Aktiengesellschaft Electronic control system for controlling torque converter bypass clutches
EP0814285A2 (en) * 1996-06-07 1997-12-29 Ford Motor Company Limited Multiple ratio automatic transmission and torque converter with bypass clutch
JP2924624B2 (ja) * 1994-01-17 1999-07-26 三菱自動車工業株式会社 自動変速機のトルクコンバータクラッチ制御装置
CN101055032A (zh) * 2006-04-11 2007-10-17 丰田自动车株式会社 动力传动系控制装置和方法
CN101105225A (zh) * 2006-07-10 2008-01-16 丰田自动车株式会社 无级变速器的变速控制系统和变速控制方法

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Publication number Priority date Publication date Assignee Title
US5202833A (en) * 1989-08-28 1993-04-13 Chrysler Corp Method of controlling the partial lock-up of a torque converter in an electronic automatic transmission system
JP2621649B2 (ja) * 1990-11-26 1997-06-18 日産自動車株式会社 ロックアップクラッチ制御装置
US5484354A (en) * 1994-09-02 1996-01-16 General Motors Corporation Controlled capacity torque converter clutch control system
US5553694A (en) * 1994-10-14 1996-09-10 Ford Motor Company Multiple ratio automatic transmission and torque converter
US5693878A (en) * 1997-01-23 1997-12-02 Ford Global Technologies, Inc. Torque converter clutch engagement test
JP4054778B2 (ja) 2004-03-31 2008-03-05 ジヤトコ株式会社 自動変速機の制御装置
EP1739329B1 (en) 2005-06-29 2016-11-02 Nissan Motor Co., Ltd. Device and method for controlling the engaging force of a lockup clutch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410223A2 (en) * 1989-07-24 1991-01-30 Ford-Werke Aktiengesellschaft Electronic control system for controlling torque converter bypass clutches
JP2924624B2 (ja) * 1994-01-17 1999-07-26 三菱自動車工業株式会社 自動変速機のトルクコンバータクラッチ制御装置
EP0814285A2 (en) * 1996-06-07 1997-12-29 Ford Motor Company Limited Multiple ratio automatic transmission and torque converter with bypass clutch
CN101055032A (zh) * 2006-04-11 2007-10-17 丰田自动车株式会社 动力传动系控制装置和方法
CN101105225A (zh) * 2006-07-10 2008-01-16 丰田自动车株式会社 无级变速器的变速控制系统和变速控制方法

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RU2009103156A (ru) 2010-08-10
US20090197736A1 (en) 2009-08-06
US8280600B2 (en) 2012-10-02
EP2085660A1 (en) 2009-08-05

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Application publication date: 20090826