CN110799372A - 用于在考虑电机转速情况下补偿混合动力分离离合器的离合器力矩的方法及控制和调节装置 - Google Patents

用于在考虑电机转速情况下补偿混合动力分离离合器的离合器力矩的方法及控制和调节装置 Download PDF

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CN110799372A
CN110799372A CN201880042895.1A CN201880042895A CN110799372A CN 110799372 A CN110799372 A CN 110799372A CN 201880042895 A CN201880042895 A CN 201880042895A CN 110799372 A CN110799372 A CN 110799372A
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clutch
electric machine
rotational speed
actuator
control
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CN110799372B (zh
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克里斯蒂安·韦伯
拉尔夫·曼斯伯格
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Schaeffler Technologies AG and Co KG
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Abstract

本发明公开用于在考虑机动车的混合动力驱动装置(1)的电机(6)的转速的情况下补偿分离离合器(4)的离合器力矩的方法以及控制和调节装置(12)。电机(6)的转速在离合器力矩情况下得到考虑。计算在内部增大或减小所需要的离合器力矩的系数，其中分离离合器(4)设置在内燃机(2)和电机(6)之间。分离离合器(4)分配有用于其操作的执行器(8)。

Description

用于在考虑电机转速情况下补偿混合动力分离离合器的离合 器力矩的方法及控制和调节装置
技术领域
本发明涉及一种用于在考虑机动车的混合动力驱动装置的电机的转速的情况下补偿分离离合器的离合器力矩的方法。在此，电机是机动车的混合动力驱动装置的一部分。分离离合器设置在内燃机和电机之间。此外，分配有用于操作分离离合器的执行器。
此外，本发明涉及一种用于补偿分离离合器的离合器力矩的控制和调节装置，分离离合器设置在内燃机和电机之间。
背景技术
德国公开文献DE 101 27 766 A1公开用于补偿转速对离合器的调整力矩特征曲线的影响的方法和设备。为此，测量离合器的转速并且根据转速改变用于离合器的执行机构的相应的理论位置。该转速补偿仅考虑内燃机转速。
德国公开文献DE 10 2008 027 071 A1公开用于混合动力驱动系中设置在电机和内燃机之间的摩擦式离合器的摩擦值适配方法，摩擦式离合器由离合器执行器操作。摩擦值借助于由摩擦式离合器所传递的力矩来适配，该力矩在借助于电机起动内燃机时求出。
德国公开文献DE 10 2016 222 466 A1公开用于检查机动车的混合动力驱动装置的分离离合器的力矩传递特性的方法。其提出：用于检查分离离合器的力矩传递特性的混合动力驱动装置有针对性地置于分离离合器接合的运行状态下，其中内燃机的过剩的功率经由电机转换成电能，其中分析在运行状态中出现的可测量的滑差。
发明内容
本发明所要解决的技术问题是：实现一种用于补偿分离离合器的离合器力矩的方法，其中为了补偿考虑机动车的混合动力驱动系的电机的转速。
所述技术问题通过一种包括权利要求1的特征的、用于在考虑电机的转速的情况下补偿分离离合器的离合器力矩的方法来解决。
本发明的另外要解决的技术问题是：实现一种用于补偿分离离合器的离合器力矩的控制和调节装置，该分离离合器设置在内燃机和电机之间，其中控制和调节装置为了补偿离合器力矩应考虑电机的转速。
上述技术问题通过包括权利要求6的特征的、用于补偿分离离合器的离合器力矩的控制和调节装置来解决。
用于在考虑机动车的混合动力驱动装置的电机的转速的情况下补偿分离离合器的离合器力矩的根据本发明的方法的特征在于：分离离合器设置在内燃机和电机之间。此外，分离离合器分配有设置用于操作其自身的执行器。按照根据本发明的方法，首先将校准函数存储在控制和调节装置中。校准函数描述作为电机的转速的函数的系数。随后，在行驶运行中由分离离合器要求离合器力矩。随后，根据存储在存储器中的校准函数计算分离行程并且在执行器处进行设定。随后，根据电机的转速计算在内部增大或减小所需要的离合器力矩的系数。
在控制和调节装置中存储在为此所设的存储器中的特征曲线或给出与执行器的分离行程相关的离合器的力矩容量的校准函数在考虑电机的转速的情况下如此适配，使得能够补偿转速对力矩容量的影响。这是当前发明的优点。
在一个实施方式中，与电机的转速相关的系数是执行器的分离行程，执行器的当前位置加上或减去该分离行程。通过这种相加或相减反作用于电机的转速对所需要的离合器力矩的影响。
在一个实施方式中，在行驶运行中所需要的离合器力矩和计算执行器的位置之间计算与电机的转速相关的系数。由此尤其能够设定执行器的位置，该位置与离合器力矩的特征曲线相关并且同时与电机的转速相关。由此可行的是：精确地设定与分离行程相关的力矩容量的精度。
同样地，根据本发明提出一种计算机程序产品，该计算机程序产品提供在非易失的且计算机可读的介质上，并且该计算机程序产品促使控制和调节装置执行用于补偿分离离合器的离合器力矩的根据本发明的方法，分离离合器设置在内燃机和电机之间。
本发明的另一方面是提出一种用于补偿分离离合器的离合器力矩的控制和调节装置，其中分离离合器设置在内燃机和电机之间。控制和调节装置包括存储器，在存储器中存储校准函数，校准函数描述作为电机的转速的函数的系数。分离离合器的执行器与控制和调节装置经由通信连接链路连接。执行器经由通信连接链路在行驶运行中从控制和调节装置接收分离离合器的执行器的分离行程的量值。由此，能够设定分离离合器的相应的离合器力矩。同样地，电机与控制和调节装置经由通信连接链路连接。根据电机的转速计算在内部增大或减小分离离合器的所需要的离合器力矩的系数。
在一个实施方式中，可以借助分离离合器的执行器设定分离离合器的根据电机的转速计算的分离行程，从而可以补偿电机的转速。
此外，本发明公开一种用于机动车的混合动力驱动装置，混合动力驱动装置具有内燃机、电机和连接在内燃机和电机之间的分离离合器。在此，控制和调节装置包括存储器，在存储器中存储校准函数，校准函数描述作为电机的转速的函数的系数。
校准函数或校准曲线在横坐标上绘制电机的转速。在纵坐标上示出如下系数，该系数表达对分离离合器的力矩容量的影响。在机动车行驶时，由分离离合器要求扭矩。根据校准函数或校准曲线计算分离行程并且在分离离合器的执行器处进行设定。在要求离合器力矩和计算执行器位置之间，根据电机转速计算在内部增大或减小所需的力矩的系数。由此，设定执行器的位置，该位置与力矩特征曲线相关并且同时与电机的转速相关。因此可行的是：借助本发明补偿转速效应对于分离离合器的力矩容量的影响。
附图说明
下面，应根据所附的附图详细阐述本发明的实施例和其优点。附图中的大小比例不总是对应于真实的大小比例，因为简化了一些形状并且为了更好地说明相对于其他元件放大地示出另外的形状。在此示出：
图1示出设置在内燃机和电机之间的分离离合器的示意图(串联混合动力驱动系)；
图2示出用于机动车的混合动力驱动装置的示意图，其中实现用于在考虑电机转速的情况下补偿混合动力分离离合器的离合器力矩的根据本发明的方法，和
图3示出执行器对分离离合器的作用方式的示意图。
对于本发明的相同的或起相同作用的元件使用相同的附图标记。此外，为了概览仅在个别附图中示出对于描述相应附图所需的附图标记。
具体实施方式
图1示出分离离合器4的示意图，该分离离合器设置在混合动力驱动装置1的一个实施方式的内燃机2和电机6之间。分离离合器4包括离合器盘16、盘式弹簧17、压力盘18和反压板19。离合器盘16在此与内燃机2抗转动地连接。盘式弹簧17、压力盘18和反压板19与电机6抗转动地连接。优选地，盘式弹簧17、压力盘18和反压板19集成在电机6的转子(未示出)中并且以转子的旋转速度(转速)转动。
图2示出用于补偿分离离合器4的离合器力矩的控制和调节装置12的一个实施方式的示意图，分离离合器设置在混合动力驱动装置1的内燃机2和电机6之间。控制和调节装置12包括存储器11，在存储器中存储校准函数(未示出)。校准函数描述作为电机6的转速的函数的系数。混合动力驱动装置1主要包括内燃机2、分离离合器4、电机6和变速器10。全部这些元件分别经由通信连接链路20与控制和调节装置12连接。附加地，电机6在所示出的实施方式中与充电设备14相关联，经由充电设备能够向与充电设备14连接的能量存储器15充电，或者电机6经由充电设备从能量存储器15中提取驱动装置所需的能量。充电设备14同样经由通信连接链路20与控制和调节装置12连接。经由通信连接链路2，在行驶运行中例如将内燃机2的转速和电机6的转速提供给控制和调节装置12。如已经在上文阐述，在存储器11中存储相应的校准函数，校准函数描述作为电机6的转速的函数的系数。在行驶运行中，分离离合器4要求相应的离合器力矩。随后，可以根据在存储器11中存储的校准函数设定执行器8的分离行程9(参见图3)，由此分离行程9匹配于电机6的转速。由此根据校准函数计算系数，该系数在考虑电机6的转速的情况下在内部增大或减小分离离合器4的所需要的离合器力矩。这具有的优点是：电机6的转速效应补偿分离离合器4的力矩容量。
图3示出与执行器8连接的分离离合器4的示意图。执行器8设置在盘式弹簧17、压力盘18和反压板19的一侧上。这表示：执行器8设置在分离离合器4的以电机6的转速转动的元件(盘式弹簧17、压力盘18和反压板19)的相同的侧上。箭头P1表示朝向电机6的方向。箭头P2表示朝向内燃机2的方向。如已经在图2的描述中提及，根据电机6的转速计算系数，该系数在内部增大或减小所需的离合器力矩。根据行驶情况或行驶运行需要分离离合器4的相应的离合器力矩，以使得离合器力矩匹配于电机6的转速。由此在执行器8处设定相应的分离行程9，执行器8的当前位置加上或减去该分离行程。这具有的优点是：由此能够与电机6的转速对力矩容量的影响相反地作用并且能够根据分离行程9设定力矩容量的精度。因此，分离离合器4的分离行程9的量值同样是力矩容量的量值。执行器8的如此设定的位置与校准函数(扭矩特征曲线)相关并且同时与电机6的转速相关。由此补偿转速效应对分离离合器4的力矩容量的影响。
本发明参考优选的实施方式描述，所述实施方式完全不可理解为对本发明的限制。然而对于本领域技术人员显而易见的是：能够做出改变和变型，而在此没有偏离权利要求的保护范围。
附图标记列表
1 混合动力驱动装置
2 内燃机
4 分离离合器
6 电机
8 执行器
9 分离行程
10 变速器
11 存储器
12 控制和调节装置
14 充电设备
15 能量存储器
16 离合器盘
17 盘式弹簧
18 压力盘
19 反压板
20 通信连接链路
A 轴线方向
P1 箭头(朝向电机的方向)
P2 箭头(朝向内燃机的方向)
R 径向

Claims (8)

1.用于在考虑机动车的混合动力驱动装置(1)的电机(6)的转速的情况下补偿分离离合器(4)的离合器力矩的方法，其中，所述分离离合器(4)设置在内燃机(2)和所述电机(6)之间，并且所述分离离合器(4)分配有用于其操作的执行器(8)，
其特征在于如下步骤：
·将校准函数存储在控制和调节装置(12)的存储器(11)中，所述校准函数描述作为所述电机(6)的转速的函数的系数；
·在行驶运行中需要所述分离离合器(4)的相应的离合器力矩，并且根据所述校准函数计算分离行程(9)并且在所述执行器(8)处进行设定；和
·根据所述电机(6)的转速计算在内部增大或减小所需要的离合器力矩的系数。
2.根据权利要求1所述的方法，其中，所述与所述电机(6)的转速相关的系数是所述执行器(8)的分离行程(9)，所述执行器(8)的当前位置加上或减去所述分离行程，以便与所述电机(6)的转速对所需要的离合器力矩的影响相反地作用。
3.根据上述权利要求中任一项所述的方法，其中，在时间上在行驶运行中所需要的离合器力矩和计算所述执行器(8)的位置之间计算所述与所述电机(6)的转速相关的系数。
4.根据上述权利要求中任一项所述的方法，其中，如此设定所述执行器(8)的位置，使得所述位置与所述离合器力矩的特征曲线相关并且同时与所述电机(6)的转速相关。
5.计算机程序产品，其中，所述计算机程序产品提供在非易失的且计算机可读的介质上，并且所述计算机程序产品促使控制和调节装置(12)执行根据上述权利要求中任一项所述的方法。
6.控制和调节装置(12)，用于补偿分离离合器(4)的离合器力矩，所述分离离合器设置在内燃机(2)和电机(6)之间，其特征在于，
·所述控制和调节装置(12)包括存储器(11)，在所述存储器中存储校准函数，所述校准函数描述作为所述电机(6)的转速的函数的系数；
·所述分离离合器(4)的执行器(8)与所述控制和调节装置(12)经由通信连接链路(20)连接，其中，所述执行器(8)经由所述通信连接链路(20)在行驶运行中从所述控制和调节装置(12)接收用于所述执行器(8)的分离行程(9)的量值，以便设定所述分离离合器(4)的相应的离合器力矩；
·所述电机(6)与所述控制和调节装置(12)经由通信连接链路(20)连接，所述控制和调节装置根据所述电机(6)的转速计算在内部增大或减小所需要的离合器力矩的系数。
7.根据权利要求6所述的控制和调节装置，其中，能够借助所述分离离合器(4)的执行器(8)设定所述分离离合器(6)的根据所述电机(6)的转速计算的分离行程。
8.用于机动车的混合动力驱动装置，所述混合动力驱动装置具有内燃机(2)、电机(6)和连接在所述内燃机(2)和所述电机(6)之间的分离离合器(4)，其特征在于，设有根据权利要求6或7所述的控制和调节装置(12)。
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DE102018112551A1 (de) 2018-12-27

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