CN103068657A - 用于运行车载电网的方法、控制设备和计算机程序产品 - Google Patents
用于运行车载电网的方法、控制设备和计算机程序产品 Download PDFInfo
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Abstract
本发明涉及一种用于运行机动车的车载电网的方法,所述车载电网具有至少一个能量存储器(14),其中机动车具有内燃机(2)和与内燃机机械地耦接的电机(4)、用于预先设定能够至少由内燃机(2)输出的转矩的可操纵的加速踏板(21)、用于将燃料喷射(J)到内燃机(2)中的发动机控制设备(18)以及尤其具有可操纵的制动踏板(22),通过制动踏板至少在其操纵的第一子区域中在第一外部运行条件的前提条件下激活控制设备(15),从而在同时将能量馈送至车载电网中的情况下产生电机的回收功率。为了提高回收潜力在运行阶段中由控制设备(15)调整电机(4)的回收功率,其中基于对加速踏板(21)的操纵倒推出驾驶员期望,驾驶期望引起了车辆的制动功率,其中内燃机(2)的喷射(J)基于车辆的第二内部运行条件而得到保持。
Description
技术领域
本发明涉及一种用于运行机动车的车载电网的方法,其具有至少一个能量存储器,其中所述机动车具有内燃机和与该内燃机机械地耦接的电机、用于预先设定至少可由内燃机输出的转矩的可操纵的加速踏板、以及用于将燃料喷射到内燃机中的发动机控制设备以及尤其具有可操纵的制动踏板,通过该制动踏板至少在其操纵的第一子区域中在第一外部运行条件的前提条件下激活控制设备,从而在同时将能量馈送至车载电网中的情况下产生机器之间的回收功率。本发明也涉及一种用于上面所描述的机动车的车载电网的控制设备。此外,本发明还涉及一种计算机程序产品。
背景技术
越来越多地了解到在机动车中利用制动能量,方法是使用、改变或提高电机的发电机转矩。
文献DE 10 2004 051530 A1描述了一种机动车,其具有发电机和电容器。在机动车的滑行阶段中,由作为回收器的发电机产生回收能量并且存储在电容器中。为了避免在回收运行中感受到令人不舒适的过强的减速,由在发电机的激发电路中的激发电流引起的发电机的功率根据至少一个对于车辆来说特定的运行参数和/或电容器的瞬时充电状态而变化。
文献DE 10 2007 036 402 A1描述了一种用于运行在车辆中的电机的方法,其中,当车辆处于这样的状态中时,电机根据与行驶状态有关地计算的测量参量取决于行驶动力学的边界区域进行调节,以便减小或者提高作为发电机起作用的电机的转矩以稳定车辆。
文献DE 10 2008 061 821 A1描述了一种用于在具有回收能力的运行状态期间回收机动车中的能量的方法,其中自由能量被转换成电能量并且存储在车载电网中或直接提供给车辆动力总成(Fahrzeugaggregat),其中车辆在滑行运行阶段和/或制动运行阶段期间处于具有回收能力的运行状态中。为了回收显著更大量的能量,在识别出的来自驾驶员的或来自***的减速期望时,在没有操纵制动踏板或者没有主动制动介入的情况下进行具有相对于在滑行运行时的回收功率更大的回收功率的能量回收。
发明内容
本发明的任务在于,如此改进开头所述的类型的方法、控制设备和计算机程序产品,从而提高回收潜力,其中不提高内燃机的燃料消耗。
根据本发明,该任务通过权利要求1、8和9的主题来解决。从属权利要求限定了本发明的优选的改进方案。
本发明的构思是,将尽可能高份额的制动能量转换成回收功率,以便因此提高回收潜力。目前传统上已知一种具有回收发电机管理装置的简单的回收***,所述回收***基于具有作为能量存储器的铅酸电池的14V车载电网,在激活滑行切断时提高了发电机电压进而提高了电池充电功率。因此,制动能量的一部分在“滑移(Segeln)”时、也就是说在车辆的滑行运行和制动时被回收。根据具有锂电池和双层电容器的更为有效的回收***,明显更高的回收功率是可能的。在此情况下优选通过制动踏板控制回收功率。即使在根据加速踏板来激活回收的***中,也使用滑行切断的条件。本发明的构思是,在运行阶段中导入和提高回收功率,其中由于第二内部运行条件、即所谓的锁定条件(Sperrbedingung)而阻碍或延缓了滑行切断。
该任务通过以下方式来解决:由控制设备在运行阶段中调整电机的回收功率,其中基于对加速踏板的操纵倒推驾驶员期望,所述驾驶员期望引起了车辆的制动功率,其中内燃机的喷射基于车辆的第二内部运行条件得到保持。因此可以比目前现有技术明显更早知晓地进行回收。
根据一种优选的实施方式,将基于加速踏板的操纵的反馈作为第一内部运行条件进行回收。因此,对加速踏板的操纵的每个反馈都作为车辆驾驶员的减速期望进行推导。
根据一种可成本低廉地制造的优选的实施方式,将根据所述制动踏板的确定的位置、尤其是无操纵的“零”位置作为另外的第一外部运行条件来进行回收。因此,根据加速踏板的位置来进行回收。加速踏板的确定的位置简单地利用成本低廉的位置传感器来检测,进而可以简单地实现对电机的控制以运行车载电网。
根据另一种优选的实施方式,替代地或附加地根据所述加速踏板的操纵的反馈的动态特性来进行回收。因此不仅加速踏板的位置是重要的而且反馈的动态特性也是重要的。为此,设置相应的传感设备(Sensorik),所述传感设备具有相应的分析装置。
根据另一种优选的实施方式,回收的强度取决于所述加速踏板的反馈的动态特性。因此当更快地收回加速踏板时,实现更强的制动功率。
根据另一种优选的实施方式,由所述控制设备提高发电机转矩进而提高回收功率直至运行极限,其中可靠地保持第二内部运行条件、比如尤其像催化器加热和/或内燃机的暖机运行,并且尤其提高的运行极限在任何运行时刻都不会引起基于回收的喷射量的提高。因此,充分利用最大回收潜力,其中不设置喷射量提高或者说更高的发电机转矩并不通过提高内燃机的喷射量来补偿。与现有技术相反,不仅仅在激活滑行切断时使用每种电制动功率。至滑行切断的过渡在回收期间可以是流畅的并且优选对于驾驶员而言是不能感觉到的并且根据现有技术来实现。
根据一种优选的实施方式,在检测到滑行运行时进行回收、尤其增加地进行回收。例如当发动机被牵引、也就是说当动能大于驱动能时,检测到滑行运行。例如由此提高地进行回收,其中电机的激励电压被置于更高。
该任务也借助用于机动车的具有至少一个能量存储器的车载电网的控制设备通过如下方式来解决:设置一种控制设备,所述控制设备与内燃机的发动机控制设备共同作用并且尤其是包括基于微型计算机的部件,以便实施上面所描述的方法。所述控制设备因此包括分析装置,所述分析装置基于加速踏板的位置或加速踏板动态特性或者说强度来测量和分析加速踏板的传感器值,并且由此分析驾驶员期望,所述驾驶员期望引起车辆的制动功率。根据本发明,尽管由于外部的边界条件、例如催化器加热或进行冷的发动机暖机运行而将燃料喷射到内燃机中,仍然进行回收。因此通过根据本发明的控制设备可以提高回收潜力。根据本发明恰好不重要的是,等待直至滑行切断以便激活回收。
该任务也通过一种计算机程序产品来解决,所述计算机程序产品在具有用于容纳微型计算机的程序指令的预设区域的程序存储器中能够加载到控制设备中,以便执行上述方法的所有步骤,其中所述控制设备尤其具有基于微型计算机的部件。计算机程序产品具有如下优点:其可以单独地与车辆类型和发动机类型匹配并且基于经验确定的值或者根据系列测试(Testreihen)所求得的值也可以在车辆运行期间额外地单独匹配和优化。
应理解的是,前面所提及的和下面还要阐述的特征不仅能够以相应给出的组合进行应用,而且能够以其他组合进行应用。
附图说明
以下参照附图对本发明进行详细阐述。其中:
图1示出了具有驱动单元和根据本发明的嵌入式控制设备的车载电网的示意性线路图;以及
图2示出了根据本发明的控制设备的根据本发明的方法过程的流程图。
具体实施方式
图1示出了机动车1的车载电网的示意性的线路图。机动车1包括内燃机2,该内燃机机械地与电机4耦合。电机4优选是爪形电极电机(Klauenpolmaschine)。内燃机2例如通过皮带与电机4耦合。在发电机与电能量存储器14之间连接有功率电子装置3。功率电子装置3包括整流器以及调节器、尤其是用于调节激励电压和/或电能量存储器14中的馈送电流或者说馈送电压的发电机调节器。功率电子装置3由控制设备15触发并且因此是根据本发明的控制设备的一部分。
内燃机2通过离合器10和传动装置6驱动驱动轮7和8。驱动轮7、8可以借助机械制动***9来制动。传动装置可以是可自动操纵的或可手动操纵的传动装置。
此外,机动车1还包括带有加速踏板传感器21A的、可操纵的加速踏板21和带有制动踏板传感器22A的制动踏板22。加速踏板21和制动踏板22的传感器21A和22A与控制设备15连接。控制设备15将通过传感器21A、22A分析得出的加速踏板21和制动踏板22的位置的控制信息相应地转送给发动机控制设备18、发电机的功率电子装置3和机械制动控制设备9。发动机控制设备18根据内部运行条件和外部运行条件、譬如像驾驶员意图来控制和调节内燃机2,其中所述驾驶员意图基于加速踏板21或者说制动踏板22来进行分析。
发动机控制设备18可以与控制设备15一起实现为结构单元,或者正如在图1中所示的那样包括两个结构单元。
图2示出了在控制设备15中能够优选进行的示意性的流程图。在内燃机2借助未示出的起动器起动的时刻,控制设备以步骤S1开始工作。
在步骤S2中,车辆1处于运动状态,方法是操纵加速踏板21,这由传感器21A来检测。
控制设备15于是转入到查询步骤A3中并且借助加速踏板传感器21A连续地查询加速踏板21是否收回。加速踏板的反馈(Rücknahme)能够包括加速踏板位置、尤其是自由操纵的“零”位置,也就是说未操纵的位置或者比在步骤2中操纵的位置更低的每个其他位置。此外,根据一种优选的实施方式,加速踏板21的反馈的动态特性可以由带有分析电子装置的传感器21A来检测。如果没有检测到反馈,则持续地重复查询步骤A3。
如果查询步骤A3被肯定,则控制设备15将功率电子装置3切换到回收模式,从而使得电机2作为发电机根据第一回收模式Rek1来回收电能。在此情况下,受发动机控制设备18控制地还一直将燃料喷射到内燃机2中以便例如将催化器加热到工作温度,或者将内燃机2引入到热运行温度以便将内燃机引入到具有低燃料消耗的运行环境中。在回收模式Rek1中的回收因此在步骤S4中进行。
该方法进入到用于接下来的查询步骤A5的新查询中,其中查询是否存在滑行切断(Schubabschaltung)的前提条件。也就是说在此检查是否存在滑行运行(Schubbetrieb)以及是否实施滑行切断。当基于内部运行条件能够实现滑行切断时,例如因为催化器被加热或者不再需要内燃机的暖机运行(Warmlauf)时,滑行切断例如在一定的延时之后被触发。
如果滑行切断被肯定,则在第二回收模式Rek2中在步骤S6中进行回收。该步骤已经在传统的车辆中实现和公开。因此,回收收益尤其通过引入回收模式Rek1得到。
如果滑行切断被否定或被肯定,则与此无关地在步骤A7中通过制动踏板传感器22A的查询进一步查询,是否操纵制动踏板22。
如果这被肯定,则在步骤S8中起动第三回收模式Rek3,其中根据操纵制动踏板22的强度和力度通过功率电子装置3还将回收力矩设置或改变得更高,并且必要时机械制动***通过机械制动控制设备3来激活,以便使车辆制动。
控制设备15于是接着转入到查询步骤A9,以便查询内燃机是否在另一滑行运行中联动(mitschleppen),从而使得在步骤S10中利用回收模式Rek4相对于步骤S8还可以进一步提高回收。
重复查询直至在步骤A11中查询,制动踏板22是否收回到无操纵的位置。
当制动踏板22的操纵还未被收回时,在有滑行运行的情况下或在没有滑行运行的情况下在回收模式3或4中进一步进行回收。
如果制动踏板无操纵地处于“零”位置中,则在查询步骤A13中检查加速踏板21是否又***纵。
如果这被肯定,则在步骤S14中切断相应地调节的回收模式并且控装装置又转入到步骤S2。
如果加速踏板并未***纵并且车辆继续行驶,则切换到回收模式Rek1。
如果加速踏板未***纵并且因此车辆静止,则在步骤S1中进行控制。基于在此所提出的能量管理策略,因此只要可能,能够立即在回收模式Rek1中释放回收。因此提高了回收潜力。回收功能可以使用在所有混合动力变型方案和等级的所有车辆中,如中混、微混或全混合动力的所有车辆中。因此,可以通过提高发电机转矩而在不提高喷射量的情况下获得电能。因此能够获得用于使车辆减速的动能或者来自下坡行驶的势能。不再必须等待滑行切断以进行回收。所有附图仅示出了示意性的而非合乎比例的示图。此外,尤其对本发明而言参考绘出的示图是重要的。
Claims (9)
1.一种用于运行机动车的车载电网的方法,所述车载电网具有至少一个能量存储器(14),其中所述机动车具有内燃机(2)和与所述内燃机机械地耦接的电机(4)、用于预先设定能够至少由所述内燃机(2)输出的转矩的可操纵的加速踏板(21)、用于将燃料喷射(J)到所述内燃机(2)中的发动机控制设备(18)以及尤其具有可操纵的制动踏板(22),通过所述制动踏板至少在其操纵的第一子区域中在第一外部运行条件的前提条件下激活控制设备(15),从而在同时将能量馈送至车载电网中的情况下产生所述电机的回收功率,其特征在于,在运行阶段中由所述控制设备(15)调整所述电机(4)的回收功率,其中基于对所述加速踏板(21)的操纵倒推出驾驶员期望,所述驾驶员期望引起了车辆的制动功率,其中所述内燃机(2)的喷射(J)基于车辆的第二内部运行条件而得到保持。
2.根据权利要求1所述的方法,其特征在于,将基于所述加速踏板(21)的操纵的反馈作为另外的第一外部运行条件来进行回收。
3.根据权利要求1或2所述的方法,其特征在于,将根据所述制动踏板(22)的确定的位置、尤其是无操纵的“零”位置作为第一外部运行条件来进行回收。
4.根据权利要求1、2或3所述的方法,其特征在于,根据所述加速踏板的操纵的反馈的动态特性来进行回收。
5.根据权利要求1至4中任一项所述的方法,其特征在于,所述回收的强度取决于所述加速踏板的反馈的动态特性。
6.根据权利要求1至5中任一项所述的方法,其特征在于,由所述控制设备(15)提高发电机转矩进而提高回收功率直至运行极限,其中可靠地保持第二内部运行条件、比如尤其像催化器加热和/或内燃机的暖机运行,并且尤其提高的运行极限在任何运行时刻都不会引起基于回收的喷射量的提高。
7.根据权利要求1至6中任一项所述的方法,其特征在于,在检测到滑行运行时进行回收、尤其增加地进行回收。
8.一种用于运行机动车的车载电网的控制设备,所述车载电网具有至少一个能量存储器(14),其中所述机动车具有内燃机(2)和与所述内燃机机械地耦接的电机(4)、用于预先设定能够至少由所述内燃机(2)输出的转矩的可操纵的加速踏板(21)、用于将燃料喷射(J)到所述内燃机(2)中的发动机控制设备(18)以及尤其具有可操纵的制动踏板(22),通过所述制动踏板至少在其操纵的第一子区域中在第一外部运行条件的前提条件下激活控制设备,从而在同时将能量馈送至车载电网中的情况下能够产生所述电机的回收功率,其特征在于,设置控制设备(15),所述控制设备与所述内燃机(2)的发动机控制设备(18)共同作用并且尤其包括用于执行根据权利要求1至7中至少一项所述的方法的、基于微型计算机的部件。
9.一种计算机程序产品,所述计算机程序产品在具有用于容纳微型计算机的程序指令的预设区域的程序存储器中能够加载到控制设备中,以便执行根据权利要求1至7中至少一项所述方法的所有步骤,其中根据权利要求8所述的控制设备(15)尤其具有基于微型计算机的部件。
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DE102010039041A1 (de) | 2012-02-09 |
CN103068657B (zh) | 2018-03-30 |
US8996216B2 (en) | 2015-03-31 |
EP2603410B1 (de) | 2020-05-06 |
EP2603410A1 (de) | 2013-06-19 |
WO2012019820A1 (de) | 2012-02-16 |
US20130197765A1 (en) | 2013-08-01 |
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