CN102235490A - 在内燃机即将启动时使自动变速器的切换元件运行的方法 - Google Patents

在内燃机即将启动时使自动变速器的切换元件运行的方法 Download PDF

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CN102235490A
CN102235490A CN201110116514XA CN201110116514A CN102235490A CN 102235490 A CN102235490 A CN 102235490A CN 201110116514X A CN201110116514X A CN 201110116514XA CN 201110116514 A CN201110116514 A CN 201110116514A CN 102235490 A CN102235490 A CN 102235490A
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R·屈佩斯
T·施密特
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • B60W30/00—Purposes 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
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Abstract

本发明涉及一种用于在内燃机即将启动时使集成到动力传动系中的自动变速器的至少一个形锁合的切换元件、特别是爪齿式切换元件运行的方法，该动力传动系包括一个能被内燃机机械驱动的油泵和一个能被电力驱动的辅助油泵，在该方法范围内识别内燃机的即将启动，其中，在识别出内燃机的即将启动时这样地控制所述能被电力驱动的辅助油泵和所述至少一个形锁合的切换元件，即，使得直接在通过内燃机在所述至少一个形锁合的切换元件上施加确定的转速差之后，能使所述至少一个形锁合的切换元件闭合。

Description

在内燃机即将启动时使自动变速器的切换元件运行的方法
技术领域
本发明涉及一种用于在内燃机即将启动时使自动变速器的至少一个形锁合的切换元件、特别爪齿式切换元件运行的方法。
背景技术
由现有技术已知，在自动变速器中代替摩擦切换元件而使用形锁合的切换元件、特别是爪齿式切换元件作为接合元件。这得到这样的优点，即在制造成本较低的情况下需要较小的结构空间。但形锁合的切换元件具有这样的缺点，即，它们由构造引起地仅能复杂地克服转速差被同步。
出于此原因，只有当形锁合的切换元件、特别是爪齿式切换元件对于较高的挡位脱开或者说在较低的挡位中挂上时，它们才可以在自动变速器中使用。理想地，总是当形锁合的切换元件在所有低的挡位中并且在倒车挡中可以保持挂上时，它们才应用，由此将形锁合的切换元件的操作机构(Aktuierung)的数量限于最小值。
如果自动变速器的形锁合的切换元件在内燃机停机时处于打开的状态，则在发动机启动或在建立对变速器的液力压力供给时必须将该切换元件置于接合的状态中。这意味着，在压力供给直接与内燃机转速关联的液力系统中，形锁合的切换元件的简单的挂上是不可能的。
为了降低在自动变速器的液力系统中的损失功率，根据现有技术使用电力运行的油泵，所述油泵通常用作辅助油泵。这些油泵大多与被内燃机机械驱动的油泵并行地起作用，当在内燃机上存在最低转速时，该被内燃机机械驱动的油泵才可以保证油供给。例如，在DE 10311270A1的范围内描述了一种包括油泵的混合动力驱动装置，该油泵经由变速比恒定的变速器被电动机驱动。
此外，由申请人的DE 102005013137A1已知一种用来控制用于自动变速器和启动元件的油供给的方法和装置，其中，借助一个能被内燃机机械驱动的油泵和一个能被电力驱动的第二油泵，不仅在内燃机运行时、而且在内燃机停机时，可以确保对自动变速器和/或启动元件、特别是油冷却的摩擦离合器的液力控制装置的足够的油供给。
由申请人的DE 102008001277A1已知一种用于使机动车的动力传动系运行的方法，其中动力传动系至少包括一个具有一个内燃机和一个电机的混合动力驱动装置、一个连接在内燃机和电机之间的离合器、一个设置在混合动力驱动装置和输出部之间的变速器和一个在变速器内部或在变速器外部的启动元件，所述变速器配设有一个主液压泵和一个辅助液压泵。
根据该已知的方法规定，当内燃机停机并且启动元件和连接在内燃机和电机之间的离合器打开时，进行电动机式的启动，使得在制动踏板被操纵的情况下首先使辅助液压泵在第一功率级中这样运行，即，该辅助液压泵为变速器提供对于保持确定的挡必需的压力，并且在识别出启动愿望之后使辅助液压泵从第一功率级转移到第二功率级中，从而该辅助液压泵在第二功率级中为变速器提供对于实现启动力矩必需的压力；只有在辅助液压泵从第一功率级转移到第二功率级中之后、在确定的时间段结束之后，电动机的转速才提高，以提供所希望的启动功率或所希望的启动力矩。
发明内容
本发明的目的在于，给出一种用于在内燃机即将启动时使集成到动力传动系中的自动变速器的至少一个形锁合的切换元件、特别是爪齿式切换元件运行的方法，该动力传动系包括一个能被内燃机机械驱动的油泵和一个能被电力驱动的辅助油泵，通过实施所述方法使所述至少一个形锁合的切换元件在耦合转速差出现在形锁合的切换元件上之前闭合。
所述目的通过一种具有如下特征的方法实现。
据此建议一种用于在内燃机即将启动时使集成到动力传动系中的自动变速器的至少一个形锁合的切换元件、特别是爪齿式切换元件运行的方法，该动力传动系包括一个能被内燃机机械驱动的油泵和一个能被电力驱动的辅助油泵，在该方法范围内识别内燃机的即将启动，其中，在识别出内燃机的即将启动时这样地控制所述能被电力驱动的辅助油泵和所述至少一个形锁合的切换元件，即，使得直接在通过内燃机在所述至少一个形锁合的切换元件上施加确定的转速差之后，能使所述至少一个形锁合的切换元件闭合。
在这里，由能被电力驱动的辅助油泵提供对于闭合所述至少一个形锁合的切换元件必需的压力，其中，所述至少一个形锁合的切换元件的活塞一直移动到贴靠点之前不远处。
在这里建议的方法的一种有利的改进方案的范围内可以规定，延迟内燃机的启动，一直到能被电力驱动的辅助油泵已建立对于闭合所述至少一个形锁合的切换元件足够的压力和/或一直到所述至少一个形锁合的切换元件的活塞已能一直移动到贴靠点之前不远处。
按照本发明，所述至少一个形锁合的切换元件的闭合直接在通过内燃机在形锁合的切换元件上施加确定的转速差之后实现，其中，确定的转速差的值也可以是零。对于形锁合的切换元件不具有啮合几何结构(Einspurgeometrie)的情况，切换元件的闭合在没有转速差的情况下是不可能的，从而在这种情况下转速差大于零。
按照本发明，对内燃机的即将启动的识别可以例如根据对点火开关操纵、点火操纵、驾驶员座位被占用、驾驶员侧车门打开的识别和/或根据存在用于内燃机的起动信号来实现。

Claims (5)

1.用于在内燃机即将启动时使集成到动力传动系中的自动变速器的至少一个形锁合的切换元件、特别是爪齿式切换元件运行的方法，所述动力传动系包括一个能被内燃机机械驱动的油泵和一个能被电力驱动的辅助油泵，其特征在于，识别内燃机的即将启动，其中，在识别出内燃机的即将启动时这样地控制所述能被电力驱动的辅助油泵和所述至少一个形锁合的切换元件，即，使得直接在通过内燃机在所述至少一个形锁合的切换元件上施加确定的转速差之后，能使所述至少一个形锁合的切换元件闭合。
2.根据权利要求1所述的、用于使至少一个形锁合的切换元件运行的方法，其特征在于，这样地控制所述能被电力驱动的辅助油泵和所述至少一个形锁合的切换元件，即，使得由能被电力驱动的辅助油泵提供对于闭合所述至少一个形锁合的切换元件必需的压力，其中所述至少一个形锁合的切换元件的活塞一直移动到贴靠点之前不远处。
3.根据权利要求1或2所述的、用于使至少一个形锁合的切换元件运行的方法，其特征在于，延迟内燃机的启动，一直到能被电力驱动的辅助油泵已建立对于闭合所述至少一个形锁合的切换元件足够的压力和/或一直到所述至少一个形锁合的切换元件的活塞已能一直移动到贴靠点之前不远处。
4.根据权利要求1、2或3所述的、用于使至少一个形锁合的切换元件运行的方法，其特征在于，所述确定的转速差的值是零或者大于零，其中对于所述至少一个形锁合的切换元件不具有啮合几何结构的情况，转速差大于零。
5.根据权利要求1、2、3或4所述的、用于使至少一个形锁合的切换元件运行的方法，其特征在于，对内燃机的即将启动的识别根据对点火开关操纵、点火操纵、驾驶员座位被占用、驾驶员侧车门打开的识别和/或根据存在用于内燃机的起动信号来实现。
CN201110116514.XA 2010-05-07 2011-05-06 在内燃机即将启动时使自动变速器的切换元件运行的方法 Expired - Fee Related CN102235490B (zh)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN104412008A (zh) * 2012-07-05 2015-03-11 腓特烈斯港齿轮工厂股份公司 用于运行自动变速器的方法
CN104565352A (zh) * 2013-10-17 2015-04-29 腓特烈斯港齿轮工厂股份公司 用于实施相互交错的切换的方法和控制装置
CN111102348A (zh) * 2018-10-26 2020-05-05 上海汽车集团股份有限公司 一种油泵电机打油的控制方法和汽车控制器

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CN104412008B (zh) * 2012-07-05 2016-08-17 腓特烈斯港齿轮工厂股份公司 用于运行自动变速器的方法
CN104565352A (zh) * 2013-10-17 2015-04-29 腓特烈斯港齿轮工厂股份公司 用于实施相互交错的切换的方法和控制装置
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