CN108454608B - 在松开制动器的情况下保持发动机自动停止的自定义电驻车制动响应 - Google Patents
在松开制动器的情况下保持发动机自动停止的自定义电驻车制动响应 Download PDFInfo
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Abstract
本公开涉及在松开制动器的情况下保持发动机自动停止的自定义电驻车制动响应。一种车辆控制方法包括:通过控制器,在发动机自动停止并且电驻车制动器接合时,响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,并且响应于加速踏板踩下得多于预先限定的量,自动启动发动机并松开电驻车制动器。所述方法还包括:响应于车速小于预先限定的阈值速度,自动停止发动机并接合电驻车制动器。
Description
技术领域
本公开涉及在各种发动机自动停止状况和制动状况下致动电驻车制动(EPB)响应,更具体地,涉及基于针对各种发动机自动停止状况和制动状况的经销商或客户设置而使用自定义EPB响应。
背景技术
自动停止/启动车辆可使用用于在行驶循环期间启动和停止车辆发动机的策略。例如,当车辆在交通信号、人行横道、停车标识等处停止时,发动机自动停止。当需要动力时(如通常通过制动踏板松开的信号所表示的),发动机自动重启。发动机自动停止/启动特征提高了车辆的燃料经济性。
车辆还使用驻车制动,其被配置为:在施加驻车制动时,施加制动力以防止车辆运动(诸如溜车(rolling))。驻车制动可以是电子或电驻车制动(EPB)。施加EPB的用户需要和偏好基于习惯(例如,在车辆达到完全停止而挡位处于前进挡时施加EPB,使得在施加EPB时驾驶员能够松开制动踏板)而改变。由于发动机在制动踏板松开时自动启动,因此用户以这种方式使用EPB未从自动停止/启动策略中受益。
发明内容
根据实施例,一种车辆控制方法包括:通过控制器,在发动机自动停止并且电驻车制动器接合时,响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,并且响应于加速踏板踩下得多于预定量而自动启动发动机并松开电驻车制动器。
在一个或更多个实施例中,所述方法可包括:响应于车速小于预先限定的阈值速度,自动停止发动机并接合电驻车制动器。所述方法还可包括:通过控制器,无论发动机是否自动停止并且无论电驻车制动器是否接合,都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。响应于将发动机换挡到倒车挡而接合电驻车制动器或保持电驻车制动器接合可进一步包括:响应于制动踏板是否被踩下而接合电驻车制动器。所述方法可包括:通过控制器,在发动机自动停止并且电驻车制动器未接合时,在制动踏板被踩下时响应于手动输入而选择性地接合电驻车制动器。所述方法还可包括:通过控制器,在发动机自动停止并且电驻车制动器未接合时,响应于制动踏板未被踩下而自动启动发动机。
根据实施例,一种车辆控制方法包括:通过控制器,在车辆处于大于预先限定的角度的道路坡道上时,无论制动踏板是否被踩下,都响应于自动停止发动机而自动施加电驻车制动,并且在车辆处于小于预先限定的角度的道路坡道上时,基于制动踏板是否被踩下,响应于自动停止发动机而选择性地施加电驻车制动。
在一个或更多个实施例中,所述方法还可包括:响应于车速小于预先限定的阈值速度而自动停止发动机。所述方法还可包括:通过控制器,在发动机自动停止并且电驻车制动器接合时,响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,并且响应于加速踏板踩下得多于预定量,自动启动发动机并松开电驻车制动器。所述方法可包括:通过控制器,无论发动机是否自动停止并且无论电驻车制动器是否接合,都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。响应于将发动机换挡到倒车挡而接合电驻车制动器或保持电驻车制动器接合还可包括:响应于制动踏板是否被踩下,接合电驻车制动器。
根据实施例,一种车辆控制系统包括:发动机,被配置为自动停止和自动启动;电驻车制动器,被配置为选择性地接合和松开;控制器,被配置为自动停止和自动启动发动机,并响应于加速踏板的踩下而选择性地接合和松开电驻车制动器。
在一个或更多个实施例中,控制器可被配置为:在车速小于预先限定的阈值速度时自动停止发动机并接合电驻车制动器。控制器还可被配置为:响应于发动机自动停止并且电驻车制动被施加,响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,并且响应于加速踏板踩下得多于预定量,自动启动发动机并松开电驻车制动器。控制器可被配置为:响应于车辆处于大于预先限定的角度的道路坡道上,无论制动踏板是否被踩下,都自动停止发动机并施加电驻车制动。控制器可被配置为:响应于车辆处于小于预先限定的角度的道路坡道上以及制动踏板是否被踩下,自动停止发动机并选择性地施加电驻车制动。在发动机自动停止并且制动踏板未被踩下时,控制器可被配置为自动施加电驻车制动。在发动机自动停止并且制动踏板被踩下时,控制器可被配置为基于手动输入而选择性地施加电驻车制动。控制器可被进一步配置为:无论发动机是否自动停止,都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。在将发动机换挡到倒车挡时,控制器可被配置为响应于制动踏板是否被踩下而接合电驻车制动器。
附图说明
图1是示例性车辆的框图。
图2是示例性电驻车制动系统的图示。
图3是用于具有发动机自动停止/启动系统和电驻车制动器(EPB)的车辆的操作序列的流程图。
图4是基于针对EPB的自定义设置的车辆的操作序列的示例性流程图。
图5是基于针对EPB的自定义设置的车辆的操作序列的示例性流程图。
图6是基于针对EPB的自定义设置的车辆的操作序列的示例性流程图。
图7是基于使变速器换挡的具有EPB的车辆的操作序列的流程图。
具体实施方式
根据需要,在此公开本发明的具体实施例;然而,应当理解的是,所公开的实施例仅为本发明的示例,其可以以各种可替代形式实施。附图无需按比例绘制;可夸大或最小化一些特征以示出特定组件的细节。因此,此处所公开的具体结构和功能细节不应被解释为限制,而仅仅作为用于教导本领域技术人员以多种形式利用本发明的代表性基础。
图1描绘了车辆100的框图。车辆100可包括动力传动系统102,动力传动系统102被构造为向一个或更多个车轮104、106提供推进扭矩。在一些实施例中,车轮104可以是驱动轮,车轮106可以是驱动轮或非驱动轮。车辆100可包含多种动力传动系统构造。动力传动系统102可包括内燃发动机(ICE)或柴油发动机。动力传动系统102可包括一个或更多个电机。在一些动力传动系统构造中,电机可被构造为出于启动目的而旋转发动机。在一些动力传动系统构造中,电机可被构造为向车轮104和/或车轮106提供推进扭矩。在混合动力动力传动系统中,电机可被构造为提供推进扭矩并启动发动机。动力传动系统部件包括但不限于发动机、变速器、电机、电力电子模块和牵引电池。动力传动系统部件均可包括被配置为控制和监测相关联部件的控制器。动力传动系统102可被构造为前轮驱动(FWD)系统、后轮驱动(RWD)系统或全轮驱动(AWD)系统。动力传动系统102还可包括起动机/交流发电机(例如,电机)。起动机/交流发电机可电结合到电池并被构造为旋转发动机的曲轴,用于启动发动机并产生用于电池的电力。在传统的动力传动系统中,起动机/交流发电机可以是单独的电机。车辆可包括具有机械结合到变速器的发动机的动力传动系统102。变速器可以是具有动力分流式混合动力构造的混合动力变速器,其包括行星齿轮组和连接到牵引电池的一个或更多个电机。
车辆100可包括至少一个控制器120。控制器可包括用于执行指令的处理器。控制器120可包括用于存储数据和程序的易失性存储器和非易失性存储器。虽然控制器120被描绘为单个模块,但控制器120可包括经由车辆网络122进行通信的多个控制器。例如,制动控制器220可经由车辆网络122与控制器120进行通信。车辆网络122可以是控制器局域网(CAN)。车辆网络122还可包括经由控制器之间的导体传输的离散信号。控制器120可以是管理和控制动力传动系统102的运行(包括自动启动功能和自动停止功能)的动力传动系统控制系统的一部分。控制器120经由车辆网络122从一个或更多个传感器接收信号。传感器包括但不限于制动踏板传感器124、速度传感器112、坡道/山路传感器110和加速踏板传感器118。控制器120还被配置为向显示屏116发送信号。
动力传动系统102可被配置为执行发动机自动停止和自动启动循环。当满足特定的自动停止状况时,动力传动系统102可被配置为自动停止发动机。例如,当车速低于阈值时(如由速度传感器112所检测到的),可触发发动机自动停止。当满足特定的自动启动状况时,动力传动系统102可被配置为自动启动发动机。例如,可通过松开制动踏板(如由制动踏板传感器124所检测到的)来触发发动机自动启动。
车辆100可包括一个或更多个制动模块108。制动模块108可被构造为向车轮104、106施加扭矩以阻止车轮旋转。制动模块108可以是盘式制动器、鼓式制动器或它们的一些组合。制动模块可经由车轮网络122而被制动控制器220控制。制动控制器220可以是防抱死制动系统(ABS)。制动模块108可被配置有电驻车制动(EPB)特征。在电驻车制动构造中,驻车制动机构可通过使用马达而被电致动。EPB特征可包括被构造为保持车轮104、106处的制动施加的机构。可将EPB特征应用到全部车轮104、106的子集。在一些构造中,可将EPB特征应用到全部车轮104、106。
图2描绘了制动模块108的电驻车制动器(EPB)200的可能构造。EPB200可包括用于致动盘式制动器的活塞204和制动钳206的马达202。制动系统可以是盘式制动系统并且包括制动盘(brake rotor)208。制动片(brake pad)210可在制动盘208的每一侧上结合到制动钳206,使得制动盘208能够在制动钳206未被致动时自由地移动。制动活塞204可由EPB马达202电致动。EPB马达202可通过齿轮传动装置214连接到传动螺杆212。EPB马达202和/或齿轮传动装置214可通过电连接件218电连接到制动控制器220。制动控制器220可被配置为控制到EPB马达202的电流分配。EPB 200可被包含在选择的车桥(例如,非驱动轮106)的每个制动模块108中。可选地,全部四个车轮都可包括EPB 200,或者车轮104和106的任意组合可装有EPB200。
EPB 200可包括EPB开关222,EPB开关222被配置为允许驾驶员手动启用和停用EPB系统。EPB开关222可位于驾驶员附近,以允许启用和停用EPB 200。EPB开关222可电结合到制动控制器220。制动控制器220可包括用于接收EPB开关222信号的电路,并且可被配置为确定EPB开关222的状态。EPB开关222可被构造为具有多个位置。例如,在第一位置,EPB可被松开以允许车辆移动。在第二位置,EPB可被施加或接合以防止车辆移动。在一些构造中,EPB开关222可以是按钮。制动控制器220可被配置为响应于启用EPB开关222(例如通过按下按钮)而切换EPB位置。
制动控制器220可被配置为:基于由驾驶员或经销商所设置的动力传动系统状况,响应于由驾驶员或由控制器120通过车辆网络122启用EPB开关222,致动EPB马达202。当经由车辆网络122接收到致动信号时,制动控制器220可命令EPB 200致动并锁止车轮104、106。
图3描绘了用于确定驾驶员(客户)或经销商选择的自定义EPB选项300是否已被选择并采用自定义EPB选项300的处理的流程图。当在特定区域中驾驶员有使用EPB 200的习惯时,驾驶员或经销商不能基于驾驶员偏好来启用或禁用EPB设置,以充分利用发动机自动停止的优点。控制器120被配置为从驾驶员或经销商接收针对自定义EPB设置选项300的输入。输入可来自作为控制器120的交互界面的显示屏116。显示屏116可包括用于组合信息显示设置的判断工具。在框310处,控制器120确定驾驶员或经销商是否已输入自定义EPB设置300。如果否,则在框315处采用默认的手动EPB设置(即,独立于发动机自动停止/启动状况,EPB开关可以是由驾驶员手动应用的按钮)。如果已输入自定义EPB设置,则在框320处速度传感器112检测车辆100的速度,使得控制器120能够评估车速是否低于预定的阈值限制或是否为零(即,汽车没在移动)。如果否,则速度传感器112继续检查车辆100的速度。在框330处,如果车速为零或低于阈值,则采用自定义EPB设置。自定义EPB设置允许具有特定EPB习惯的驾驶员从发动机自动停止/启动的优点中受益并基于驾驶习惯而提供自动的EPB施加。图4至图6提供了驾驶员或经销商设置的自定义EPB选项的示例的流程图。
图4描绘了采用驾驶员(用户)或经销商选择的自定义EPB选项400的处理的流程图。EPB选项400被示出为自动EPB选项。在框410处,控制器120已通过驾驶员或经销商的输入来设置自定义EPB选项400。在框420处,速度传感器112检测车辆100的速度,使得控制器120能够评估车速是否低于预定的阈值限制或是否为零。如果否,则速度传感器112继续检查车辆100的速度。在框430处,如果车速为零或低于阈值,则控制器120向动力传动系统102发送信号以自动停止发动机并向制动控制器220发送信号以施加或接合EPB。控制器120可致动EPB开关222,以向制动控制器220发送信号。在框440处,制动踏板传感器124检查制动踏板是否被松开(即,制动踏板未被踩下)。如果制动踏板未被松开(即,制动踏板被踩下),则在变速器处于前进挡时发动机保持自动停止并且保持施加EPB,并且控制器120等待来自PNR换挡框700的变速器换挡(换挡到驻车挡、空挡或倒车挡)。如果制动踏板被松开,则在框450处发动机保持自动停止并且保持施加EPB。
在框460处,加速踏板传感器118检查加速踏板是否被踩下以及被踩下多少。如果被踩下得比预定的阈值更少(即,轻踩),则在框465处发动机自动启动并且保持施加EPB。如果否,则在框470处加速踏板传感器118检查加速踏板是否被踩下得比阈值量更多。如果是,则在框480处发动机自动启动并且EPB被松开。当发动机自动启动并且EPB被松开时,控制器120能够检测变速器换挡(换挡到驻车挡、空挡或倒车挡)以继续进行至PNR换挡框700。
图5描绘了采用驾驶员或经销商选择的自定义EPB设置选项500(被示出为手动EPB选项)的流程图。在框510处,控制器120已通过驾驶员或经销商的输入来设置自定义EPB选项500。在框520处,速度传感器112检测车辆100的速度,使得控制器120能够评估车速是否低于预定的阈值限制或是否为零。如果否,则速度传感器112可继续检查车辆100的速度。在框530处,如果车速为零或低于阈值,则控制器120向动力传动系统102发送信号以自动停止发动机。在框540处,制动踏板传感器124检查制动踏板是否被踩下。如果制动踏板未被踩下,则在框545处发动机自动启动。如果制动踏板被踩下,则在框550处发动机保持自动停止。在框560处,制动控制器220检查EPB是否已被手动地施加。如果EPB未被施加,则在框540中制动踏板传感器124检查制动踏板是否被踩下,如果制动踏板未被踩下,则在框545处自动启动发动机。如果EPB被手动地施加,则在框570处发动机保持自动停止并且保持施加EPB。
在框580处,加速踏板传感器118检查加速踏板是否被踩下以及被踩下多少。如果被踩下得比预定的阈值更少(即,轻踩),则在框585处发动机自动启动并且保持施加EPB。如果否,则在框590处加速踏板传感器118检查加速踏板是否被踩下得比阈值量更多。如果是,则在框595处发动机自动启动并且EPB被松开。当发动机自动启动时,控制器120能够检测变速器换挡(换挡到驻车挡、空挡或倒车挡)以继续进行至PNR换挡框700。
图6描绘了采用驾驶员或经销商选择的自定义EPB选项600(被示出为混合EPB选项)的流程图。在框610处,控制器120已通过驾驶员或经销商的输入设置自定义EPB选项600。在框620处,速度传感器112检测车辆100的速度,使得控制器120能够评估车速是否低于预定的阈值限制或是否为零。如果否,则速度传感器112能够继续检查车辆100的速度。在框630处,如果车速为零或低于阈值,则控制器120向动力传动系统102发送信号以自动停止发动机。在框640处,坡道/山路传感器110检查车辆100是否处于大于阈值量的坡道或山路上。坡道或山路的阈值可以是百分比。例如,阈值可以是7%、8%或10%的山路坡度/道路坡度。如果车辆100处于大于阈值的坡道上,则在框670处由制动控制器220自动施加EPB并且发动机保持自动停止。如果车辆处于小于阈值的坡道上,则在框650处制动踏板传感器124检查制动踏板是否被踩下。如果否,则在框670处发动机保持自动停止并且由制动控制器220自动施加EPB。如果制动踏板被踩下,则在框660处发动机保持自动停止并且驾驶员能够手动施加EPB。如果在框660处未施加EPB,则在框665处发动机在制动器松开时自动启动。如果EPB被手动地(框660)或自动地(框670)施加,则该处理进行至框680。
在框680处,加速踏板传感器118检查加速踏板是否被踩下以及被踩下多少。如果被踩下得比预定的阈值更少,则在框685处发动机自动启动并且保持施加EPB。如果否,则在框690处加速踏板传感器118检查加速踏板是否被踩下得比阈值量更多。如果是,则在框695处发动机自动启动并且EPB被松开。当发动机自动启动时,控制器120能够检测变速器换挡(换挡到驻车挡、空挡或倒车挡)以继续进行至PNR换挡框700。
图7描绘了用于在存在动力传动系统102的变速器换挡到驻车挡、空挡或倒车挡时控制EPB和发动机自动停止/启动特征的PNR换挡框700的示例的流程图。在框710处,动力传动系统向控制器120和制动控制器220发送变速器是否已换挡到驻车挡的信号。如果是,则在框715处,如果EPB未接合则施加EPB,如果EPB接合则保持施加EPB。如果变速器未换挡到驻车挡,则在框720处动力传动系统向控制器120和制动控制器220发送变速器是否已换挡到空挡的信号。如果是,则在框715处,如果EPB未接合则施加EPB,如果EPB接合则保持施加EPB。如果变速器未换挡到空挡,则在框730处动力传动系统向控制器120和制动控制器220发送变速器是否已换挡到倒车挡的信号。如果变速器未换挡到倒车挡,则在框735处在没有施加EPB的情况下以前进挡操作车辆100。如果变速器已换挡到倒车挡,则在框740处制动控制器检查是否已接合EPB。如果已接合EPB,则在框745处其保持接合。如果未接合EPB,则在框750处制动踏板传感器124检查制动器是否被踩下。如果制动器被踩下,则在框755处在没有施加EPB的情况下以倒车挡操作车辆100。如果未踩下制动踏板,则在框760处由制动控制器220自动施加EPB。
使用任意的自定义EPB设置,在换挡到驻车挡时施加EPB。此外,如果发动机之前停止,则其保持自动停止。如果发动机正在运行,则在计时器到期之后发动机在驻车挡下自动停止。计时器被设置为用于在换挡到驻车挡之后自动停止发动机的预定限制。类似地,使用任意的自定义EPB设置,在换挡到空挡时施加EPB。由于用户在任意挡位下都能够踩下制动器或手动地松开EPB,因此溜车(在空挡下)是允许的。在提供推进(即,车辆运转在前进挡)的情况下,如果松开制动器,则车辆将在EPB被松开之前自动启动。在换挡到空挡并且通过手动或通过踩下制动器的方式而松开EPB时,经由显示屏116的指示或通知可向驾驶员提供车辆100遭受溜车的警告。通知可以是但不限于弹出警告/消息、鸣响或语音通知。如果车辆溜车速度低于阈值并且松开EPB,则发动机可因溜车设置而保持自动停止。然而,所述系统将针对任何溜车的迹象施加EPB。如果用户/驾驶员选择松开EPB以允许溜车,则发动机将自动启动。
在用户/驾驶员未使用EPB的区域,出于自动停止的目的,用户或经销商可基于自定义偏好而启用或禁用EPB的使用。在发动机由于各种行驶状况而自动停止时,向用户/驾驶员和经销商提供自定义EPB设置选项来配置EPB。如果未选择自定义设置(如图3所示),则默认设置是独立于自动启动/停止功能的手动EPB。在特定区域,驾驶员习惯性地在停车之后接合EPB,并因而松开制动踏板。在这些情况中,由于发动机在松开制动器时自动启动,因此发动机自动停止的益处被削弱。此外,提供自动施加EPB的自定义设置在这些区域中为驾驶员提供了便利。类似地,EPB在山路坡道和高坡度道路上的使用减小了发动机自动停止的益处。针对EPB接合的自定义设置允许驾驶员选择匹配驾驶环境和EPB使用习惯的设置,以使发动机自动停止/启动功能的益处最大化。
尽管上面描述了示例性实施例,但并不意在这些实施例描述本发明的所有可能形式。更确切地,说明书中使用的词语为描述性词语而非限制性词语,并且应理解,可在不脱离本发明的精神和范围的情况下作出各种改变。此外,可组合各种实现的实施例的特征以形成本发明的进一步的实施例。
Claims (17)
1.一种车辆控制方法,包括:
通过控制器,在发动机自动停止并且电驻车制动器接合时,
响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,
响应于加速踏板踩下得多于预定量,自动启动发动机并松开电驻车制动器;
通过控制器,在发动机自动停止并且电驻车制动器未接合时,在制动踏板被踩下时响应于手动输入而选择性地接合电驻车制动器;
通过控制器,
在车辆处于大于预先限定的角度的道路坡道上时,无论制动踏板是否被踩下,都响应于自动停止发动机而自动施加电驻车制动,
在车辆处于小于预先限定的角度的道路坡道上时,基于制动踏板是否被踩下,响应于自动停止发动机而选择性地施加电驻车制动。
2.如权利要求1所述的车辆控制方法,还包括:响应于车速小于预定的阈值速度,自动停止发动机并接合电驻车制动器。
3.如权利要求1所述的车辆控制方法,还包括:
通过控制器,无论发动机是否自动停止并且无论电驻车制动器是否接合,
都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。
4.如权利要求3所述的车辆控制方法,其中,响应于将发动机换挡到倒车挡而接合电驻车制动器或保持电驻车制动器接合进一步包括:响应于制动踏板未被踩下,接合电驻车制动器。
5.如权利要求1所述的车辆控制方法,还包括:
通过控制器,在发动机自动停止并且电驻车制动器未接合时,响应于制动踏板未被踩下而自动启动发动机。
6.一种车辆控制方法,包括:
通过控制器,
在车辆处于大于预先限定的角度的道路坡道上时,无论制动踏板是否被踩下,都响应于自动停止发动机而自动施加电驻车制动,
在车辆处于小于预先限定的角度的道路坡道上时,基于制动踏板是否被踩下,响应于自动停止发动机而选择性地施加电驻车制动。
7.如权利要求6所述的车辆控制方法,还包括:响应于车速小于预先限定的阈值速度而自动停止发动机。
8.如权利要求6所述的车辆控制方法,还包括:
通过控制器,在发动机自动停止并且电驻车制动器接合时,
响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,
响应于加速踏板踩下得多于预定量,自动启动发动机并松开电驻车制动器。
9.如权利要求6所述的车辆控制方法,还包括:
通过控制器,无论发动机是否自动停止并且无论电驻车制动器是否接合,
都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。
10.如权利要求9所述的车辆控制方法,其中,响应于将发动机换挡到倒车挡而接合电驻车制动器或保持电驻车制动器接合进一步包括:响应于制动踏板未被踩下,接合电驻车制动器。
11.一种车辆控制系统,包括:
发动机,被配置为自动停止和自动启动;
电驻车制动器,被配置为选择性地接合和松开;
控制器,被配置为自动停止和自动启动发动机,并响应于加速踏板的踩下而选择性地接合和松开电驻车制动器,
其中,控制器被进一步配置为:响应于车辆处于大于预先限定的角度的道路坡道上,无论制动踏板是否被踩下,都自动停止发动机并施加电驻车制动;响应于车辆处于小于预先限定的角度的道路坡道上以及制动踏板是否被踩下,自动停止发动机并选择性地施加电驻车制动。
12.如权利要求11所述的系统,其中,控制器被配置为:在车速小于预先限定的阈值速度时,自动停止发动机并接合电驻车制动器。
13.如权利要求12所述的系统,其中,控制器被进一步配置为:响应于发动机自动停止并且电驻车制动被施加,
响应于加速踏板踩下得少于预定量,自动启动发动机而不松开电驻车制动器,
响应于加速踏板踩下得多于预定量,自动启动发动机并松开电驻车制动器。
14.如权利要求11所述的系统,其中,在发动机自动停止并且制动踏板未被踩下时,控制器被配置为自动施加电驻车制动。
15.如权利要求11所述的系统,其中,在发动机自动停止并且制动踏板被踩下时,控制器被配置为基于手动输入而选择性地施加电驻车制动。
16.如权利要求11所述的系统,其中,控制器被进一步配置为:无论发动机是否自动停止,都响应于将发动机换挡到驻车挡、空挡或倒车挡而接合电驻车制动器或保持电驻车制动器接合。
17.如权利要求16所述的系统,其中,在将发动机换挡到倒车挡时,控制器被配置为:响应于制动踏板未被踩下,接合电驻车制动器。
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