CN103101528B - 用于车辆的制动加力器的真空压力控制方法 - Google Patents

用于车辆的制动加力器的真空压力控制方法 Download PDF

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CN103101528B
CN103101528B CN201210273548.4A CN201210273548A CN103101528B CN 103101528 B CN103101528 B CN 103101528B CN 201210273548 A CN201210273548 A CN 201210273548A CN 103101528 B CN103101528 B CN 103101528B
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hydraulic pressure
brake
pressure
produced
vehicle
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CN103101528A (zh
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申周勋
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Hyundai Motor Co
Kia Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58Combined or convertible systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/44Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/441Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters
    • B60T8/442Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters the booster being a fluid return pump, e.g. in combination with a brake pedal force booster
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/662Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00Further aspects of brake control systems not otherwise provided for
    • B60T2270/30ESP control system
    • B60T2270/304ESP control system during driver brake actuation

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

本发明公开了一种用于车辆的制动加力器的真空压力控制方法,其可包括当操作制动踏板时,确定制动加力器的负压是否大于预定值;当制动加力器的负压不大于预定值时,通过所述制动踏板的操作来检测液压改变率;在所述制动加力器的负压不大于预定值时,根据所检测到的液压变化率来确定必要的制动力;确定所确定的必要的制动力是否大于由制动踏板的操作而产生的液压;当所确定的必要的制动力大于由制动踏板的操作而产生的液压时,产生附加的液压,该附加的液压大小相当于所述必要的制动力和所产生的液压之间的差值;和通过将所产生的液压以及附加的液压传送给车轮制动器来执行制动。

Description

用于车辆的制动加力器的真空压力控制方法
相关申请的交叉引用
本申请要求2011年11月14日向韩国知识产权局提交的韩国专利申请No.10-2011-0118505的优先权,该申请的全部内容结合于此,以用于通过该引用的所有目的。
技术领域
本发明涉及一种控制车辆的制动器负压的方法。更特别的,本发明涉及一种控制施加给具有GDI发动机的车辆制动器负压的方法。
背景技术
通常,GDI(汽油直喷)发动机推进催化剂通过燃烧改善特性在发动机的早期操作阶段加热。活性催化剂被用于减少发动机早期操作阶段的有害材料。
活性催化剂降低发动机的负压从而引发制动器负压不足。也就是说,GDI发动机存在制动性能恶化的问题。
在传统技术中,存在用于产生制动器负压的方法,其中真空泵或者电真空泵被配置在发动机里从而解决上述问题。然而,这种方法必然地增加附加设备而增加成本以及车辆的重量,并且与此同时,存在使得制造工艺变复杂的缺点。而且,真空泵使得车辆的NVH(噪声、振动以及声振粗糙度)变得更严重。
进一步的,作为真空泵的可替代方法,已经开发了一种使用ECS(电子防滑控制)系统的制动器负压控制方法。在此,ESC是ABS(防抱死制动系统)的一种类型。在这种方法里,基于踏板行程传感器的信号,计算出必要的制动力,并且基于负压传感器的信号,计算可产生的制动力。进一步的,如果必要的制动力大于可产生的制动力,则ESC系统产生相当于必要制动力和可产生的制动力之间的差值大小的制动力。
同时,使用传统的ESC系统的制动器负压控制方法使用了踏板行程传感器和负压传感器,这增加了制造成本。
公开于本发明背景部分的信息仅仅旨在增加对本发明的总体背景的理解,而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
发明内容
本发明的多个方面致力于提供一种控制车辆的制动器负压的方法,具有减少被应用其上的传感器的数目的优点。
在本发明的一个方面中,一种用于控制车辆的制动器压力的方法,所述车辆可以包括ESC(电子防滑控制)系统,该电子防滑控制系统包含负压开关和液压传感器,所述负压开关用于将制动加力器的负压与预定值进行比较,所述液压传感器检测所述制动加力器内的液压变化率,该方法可以包括:当操作制动踏板时,确定制动加力器的负压是否大于预定值;当制动加力器的负压不大于预定值时,通过所述制动踏板的操作来检测液压改变率;在所述制动加力器的负压不大于预定值时,根据所检测到的液压变化率来确定必要的制动力;确定所确定的必要的制动力是否大于由制动踏板的操作而产生的液压;当所确定的必要的制动力大于由制动踏板的操作而产生的液压时,产生附加的液压,该附加的液压大小相当于所述必要的制动力和所产生的液压之间的差值;和通过将所产生的液压以及附加的液压传送给车轮制动器来执行制动。
当制动加力器的负压大于预定值时,所述由制动踏板的操作而产生的液压被传送给车轮制动器以执行制动。
当必要的制动力大于所产生的液压时,与必要的制动力和所产生的液压相当的附加的液压的差值,以及所产生的液压被传送给车轮制动器以执行制动。
当必要的制动力不大于所产生的液压时,所产生的液压被传送给车轮制动器。
所述的ESC系统可以包括控制单元,以用于比较和传送液压并且产生附加的液压。
根据本发明的例示实施方式所述,传统的制动器负压控制方法被应用到ESC系统。因此,不需要单独的系统。
并且,踏板行程传感器以及负压传感器不必被使用。因此,节约了制造成本且简化了制造工艺。
本发明的方法和装置具有其他的特性和优点,这些特性和优点从并入本文中的附图和随后的具体实施方式中将是显而易见的,或者将在并入本文中的附图和随后的具体实施方式中进行详细陈述,这些附图和具体实施方式共同用于解释本发明的特定原理。
附图说明
图1为根据本发明的例示实施方式的车辆的制动器负压控制装置的方框图。
图2为根本本发明的例示实施方式的车辆的制动器负压控制方法的流程图。
应当了解,附图并不必须是按比例绘制的,其示出了某种程度上经过简化了的本发明的基本原理的各个特征。在此所公开的本发明的特定的设计特征,包括例如特定的尺寸、定向、定位和外形,将部分地由特定目的的应用和使用环境所确定。
在这些附图中,在贯穿附图的多幅图形中,附图标记引用本发明的相同或等效的部分。
具体实施方式
现在将具体参考本发明的各个实施方式,在附图中和以下的描述中示出了这些实施方式的实例。虽然本发明与示例性实施方式相结合进行描述,但是应当了解,本说明书并非旨在将本发明限制为那些示例性实施方式。相反,本发明旨在不但覆盖这些示例性实施方式,而且覆盖可以被包括在由所附权利要求所限定的本发明的精神和范围之内的各种替换。
以下将参考附图详细描述本发明的例示实施方式。
图1为根据本发明的例示实施方式的车辆制动器负压控制装置的方框图。
如图1所示,根据本发明的例示实施方式的车辆负压控制装置包括ESC(电子防滑控制)单元10、制动加力器40、液压传感器20、负压开关50以及车轮制动器60。
ESC单元10被包括在ESC系统中。并且,ESC单元10比较、传送以及产生液压。在此,ESC系统是一种ABS(防抱死刹车系统)。ABS为在制动时防止轮胎抱死的安全系统,并且由于ABS对于所属领域技术人员而言是公知的,其详细描述将被省略。
制动加力器40使用在其中形成的负压来产生制动必要的液压。并且,产生液压的行为通过操作制动踏板30而被执行。也就是说,制动加力器40被连接到制动踏板30。
液压传感器20被准备在ESC单元10中,并且被连接到制动加力器40。而且,液压传感器20检测液压变化率并检测制动加力器40所产生的液压。进一步的,它将液压变化率以及所产生的液压传送给ESC单元10。
负压开关50被连接到制动加力器40并且将制动加力器40内的负压与预定值进行比较。进一步的,负压开关50被连接到ESC单元10,并且,如果负压小于预定值,将信号传送给ESC单元。
车轮制动器60可为设置在车轮上的传统的制动器类型。并且,车轮制动器60被连接到制动加力器40并从制动加力器40接收制动必要的液压。进一步的,车轮制动器60被连接到ESC单元10并且从ESC单元10接收制动所需的液压。
图2为根据本发明的例示实施方式的车辆的制动器负压控制方法的流程图。
如图2所示,如果制动踏板30被操作(S100),则负压开关50确定制动加力器40的负压是否大于预定值K(S110)。
如果负压大于预定值K,则由制动踏板30的操作而产生的液压B被传送给车轮制动器60(S120以及S140)。并且,车轮制动器60通过被传送的液压B来执行制动(S180)。
如果负压小于预定值K,液压传感器20检测液压变化率以及检测通过制动踏板30的操作而形成于制动加力器40内所产生的液压C(S130)。并且,ESC单元10根据液压变化率计算制动所需的液压A(S150)。
如果所需的液压A被计算,ESC单元10确定液压A是否大于所产生的液压C(S160)。
如果液压A不大于所产生的液压C,所产生的液压C被传送给车轮制动器60(S140)。车轮制动器60通过被传送的液压C执行制动(S180)。
如果已经确定液压A大于所产生的液压C,则ESC单元10产生额外的液压(A-C),其相当于液压A和所产生的液压C的差值大小(S170)。额外的液压(A-C)以及所产生的液压C被传送给车轮制动器60(S140)。也就是说,车轮制动器60接收等于制动所需的液压A大小的液压。车轮制动器60使用液压A执行制动(S180)。
如上所述的根据本发明的例示实施方式的车辆制动器负压控制方法可被应用于传统制动器负压控制方法中使用的ESC系统上。因此,不需要一种新的独立系统。并且,也不使用踏板行程传感器以及负压传感器。因此,制造成本和工艺都将减少。
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想穷尽本发明,或者将本发明限定为所公开的精确形式,并且很显然,根据上述教导,可以进行很多改变和变化。对示例性实施方式进行选择和描述的目的在于解释本发明的特定原理及其实际应用,从而使得本领域的其它技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由所附的权利要求书及其等同形式所限定。

Claims (5)

1.一种用于控制车辆的制动器压力的方法,所述车辆包括电子防滑控制系统,该电子防滑控制系统包含负压开关和液压传感器,所述负压开关用于将制动加力器的负压与预定值进行比较,所述液压传感器检测所述制动加力器内的液压变化率,该方法包括:
当操作制动踏板时,确定制动加力器的负压是否大于预定值;
当制动加力器的负压不大于预定值时,通过所述制动踏板的操作来检测液压改变率;
在所述制动加力器的负压不大于预定值时,根据所检测到的液压变化率来确定必要的制动力;
确定所确定的必要的制动力是否大于由制动踏板的操作而产生的液压;
当所确定的必要的制动力大于由制动踏板的操作而产生的液压时,产生附加的液压,该附加的液压大小相当于所述必要的制动力和所产生的液压之间的差值;和
通过将所产生的液压以及附加的液压传送给车轮制动器来执行制动。
2.如权利要求1所述的用于控制车辆的制动器压力的方法,其中,当制动加力器的负压大于预定值时,所述由制动踏板的操作而产生的液压被传送给车轮制动器以执行制动。
3.如权利要求1所述的用于控制车辆的制动器压力的方法,其中,当必要的制动力大于所产生的液压时,与必要的制动力和所产生的液压的差值相当的附加的液压以及所产生的液压被传送给车轮制动器以执行制动。
4.如权利要求1所述的用于控制车辆的制动器压力的方法,其中,当必要的制动力不大于所产生的液压时,所产生的液压被传送给车轮制动器。
5.如权利要求1所述的用于控制车辆的制动器压力的方法,其中,所述的电子防滑控制系统包括控制单元,以用于比较和传送液压并且产生附加的液压。
CN201210273548.4A 2011-11-14 2012-06-29 用于车辆的制动加力器的真空压力控制方法 Active CN103101528B (zh)

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