CN108223230A - 控制轻度混合动力电动车辆的mhsg的方法和设备 - Google Patents

控制轻度混合动力电动车辆的mhsg的方法和设备 Download PDF

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Publication number
CN108223230A
CN108223230A CN201711298724.9A CN201711298724A CN108223230A CN 108223230 A CN108223230 A CN 108223230A CN 201711298724 A CN201711298724 A CN 201711298724A CN 108223230 A CN108223230 A CN 108223230A
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China
Prior art keywords
mhsg
target
boost pressure
pressure
torque
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金贤
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Hyundai Motor Co
Kia Corp
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Hyundai Motor Co
Kia Motors Corp
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Publication of CN108223230A publication Critical patent/CN108223230A/zh
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

本发明涉及一种控制轻度混合动力电动车辆的轻度混合动力起动机发电机(MHSG)的方法，该方法包括：检测用于控制MHSG的数据；基于数据确定目标升压压力；将目标升压压力与供应到发动机的空气的进气压力之间的差值与预定值进行比较；当目标升压压力与进气压力之间的差值等于或大于预定值时，确定MHSG的目标扭矩；以及控制MHSG产生MHSG的目标扭矩。

Description

控制轻度混合动力电动车辆的MHSG的方法和设备
相关申请的交叉引用
本申请基于并且要求于2017年12月13日向韩国知识产权局提交的申请号为10-2016-0169853的韩国专利申请的优先权权益，其公开内容通过整体引用并入本文。
技术领域
本发明涉及用于控制轻度混合动力电动车辆的MHSG的方法和装置。更具体地，本发明涉及一种用于控制轻度混合动力电动车辆的MHSG的方法和装置，其能够改善加速感受。
背景技术
如本领域通常所知，混合动力电动车辆一起使用发动机和电池电源。混合动力电动车辆有效地组合了内燃发动机的扭矩和电动机的扭矩。
根据发动机和电动机之间的功率分配比例，混合动力电动车辆可以分为重度类型和轻度类型。在轻度类型的混合动力电动车辆(以下称为轻度混合动力电动车辆)的情况下，使用根据发动机的输出被配置为起动发动机或发电的轻度混合动力起动机发电机(MHSG)而非使用交流发电机。在重度类型的混合动力电动车辆的情况下，除了被配置为起动发动机或发电的集成起动机发电机(ISG)之外，还使用被配置为产生驱动扭矩的驱动马达。
MHSG可以根据车辆的行驶状态辅助发动机的扭矩，并且可以通过再生制动对电池(例如，48V电池)进行充电。因此，可以改善轻度混合动力电动车辆的燃料效率。
涡轮增压器是使用从发动机排出的排气使涡轮旋转，然后通过使用涡轮的扭矩操作压缩机将高压空气供应到发动机中来增加发动机的输出的装置。在涡轮增压器的情况下，当车辆在怠速状态或低速状态下加速时，由于低排气压力可能发生涡轮迟滞。驾驶员可能感觉到非线性加速。
本发明背景技术部分中公开的信息仅用于增强对本发明的一般背景的理解，并且对于本领域技术人员而言不能被认为是对该信息形成已知的现有技术的认可或任何形式的建议。
发明内容
本发明的各个方面旨在提供一种用于控制轻度混合动力电动车辆的MHSG的方法和装置，其具有通过使用MHSG的扭矩来防止涡轮迟滞的优点。
根据本发明的示例性实施例的一种控制轻度混合动力电动车辆的轻度混合动力起动机发电机(MHSG)的方法可以包括：检测用于控制MHSG的数据；基于数据确定目标升压压力；将目标升压压力与进气压力之间的差值与预定值进行比较；当目标升压压力与进气压力之间的差值等于或大于预定值时，确定MHSG的目标扭矩；以及控制所述MHSG产生MHSG的目标扭矩。
目标升压压力可以基于加速器踏板的位置值、发动机转速、进气量以及进气温度来确定。
方法还可以包括：当目标升压压力和进气压力之间的差值小于预定值时，不产生用于防止涡轮迟滞的所述MHSG的扭矩。
MHSG的目标扭矩可以基于目标升压压力和进气压力之间的差值来确定。
方法还可以包括：在产生MHSG的目标扭矩的同时将目标升压压力和进气压力的差值与预定值进行比较；以及当目标升压压力与进气压力之间的差值小于预定值时，不产生用于防止涡轮迟滞的所述MHSG的扭矩。
根据本发明的示例性实施例的一种控制轻度混合动力电动车辆的轻度混合动力起动机发电机(MHSG)的装置可以包括：数据检测器，检测用于控制MHSG的数据，MHSG起动发动机或通过发动机的输出发电；以及控制器，被配置为基于数据确定目标升压压力；其中，所述控制器被配置为：当所述目标升压压力和进气压力之间的差值等于或大于预定值时，确定MHSG的目标扭矩，并且控制器控制MHSG以产生MHSG的目标扭矩。
控制器可以基于加速器踏板的位置值、发动机转速、进气量以及进气温度来确定所述目标升压压力。
当目标升压压力和进气压力之间的差值小于预定值时，控制器可以不产生用于防止涡轮迟滞的所述MHSG的扭矩。
控制器可以基于目标升压压力和进气压力之间的差值来确定MHSG的目标扭矩。
在产生MHSG的目标扭矩的同时，当目标升压压力和进气压力之间的差值小于预定值时，控制器可以不产生用于防止涡轮迟滞的所述MHSG的扭矩。
数据检测器可以包括：加速器踏板位置检测器，被配置用于检测加速器踏板的位置值；发动机转速检测器，被配置用于检测发动机转速；进气压力检测器，被配置用于检测进气压力；进气量检测器，被配置用于检测进气量；以及进气温度检测器，被配置用于检测进气温度。
根据本发明的示例性实施例，通过使用MHSG的扭矩可以防止涡轮迟滞。因此，可以改善轻度混合动力电动车辆的加速感受。
本发明的方法和装置具有其它特征和优点，这些特征和优点将在并入本文的附图和下文的具体实施方式中显而易见或被更详细地阐述，附图和具体实施方式共同用于解释本发明的某些原理。
附图说明
图1是根据本发明的示例性实施例的轻度混合动力电动车辆的框图。
图2是根据本发明的示例性实施例的涡轮增压器系统的示意图。
图3是示出根据本发明的示例性实施例的用于控制轻度混合动力电动车辆的MHSG的装置的框图。
图4是示出根据本发明的示例性实施例的用于控制轻度混合动力电动车辆的MHSG的方法的流程图。
可以理解的是，附图不一定按比例绘制，而是示出了说明本发明的基本原理的各种特征的稍微简化的示意图。在此公开的本发明的包括例如特定尺寸、取向、位置和形状的特定设计特征将部分地由具体的预期应用和使用环境来确定。
在附图中，贯穿附图的多个附图，附图标记指代本发明的相同或等价的部分。
具体实施方式
现在将详细参考本发明的各种实施例，其示例在附图中示出并在下文进行描述。虽然本发明将结合示例性实施例进行描述，但是应该理解的是，本说明书并不旨在将本发明限制于那些示例性实施例。相反，本发明旨在不仅涵盖示例性实施例，而且覆盖可包括在由所附权利要求限定的本发明的精神和范围内的各种替代、修改、等价物和其它实施例。
在下文的详细描述中，将参照附图更充分地描述本申请的示例性实施例，在附图中示出了本发明的示例性实施例。然而，本发明不限于在此描述的示例性实施例，而是可以以各种不同的方式进行修改。
为了清楚地描述本发明的示例性实施例，省略了与描述无关的部分，并且在整个说明书中，相同的附图标记指代相同或相似的元件。
由于附图中的每个组件是为了便于描述而任意示出的，因此本发明不特别限于附图中示出的组件。
图1是根据本发明的示例性实施例的轻度混合动力电动车辆的框图，并且图2是根据本发明的示例性实施例的涡轮增压器系统的示意图。
如图1和图2所示，根据本发明的示例性实施例的轻度混合动力电动车辆包括发动机10、变速器20、轻度混合动力起动机发电机(MHSG)30、电池40、差动齿轮设备50以及车轮60。
发动机10燃烧燃料和空气以将化学能转化成机械能。发动机10可以包括燃料和空气流入的多个燃烧室11和喷射燃料的喷射器12。发动机10连接到进气歧管13以接收燃烧室11中的空气，并且在燃烧过程中产生的排气聚集在排气歧管14中并排出到发动机10的外部。
根据本发明的示例性实施例的涡轮增压器系统可以包括涡轮增压器110、进气管路120、节气阀130、第一排气管路140、第二排气管路150和排气门阀151。
涡轮增压器100包括涡轮机111和压缩机112。涡轮机111通过排气旋转，并且压缩机112通过涡轮机111的旋转产生的动力而旋转。涡轮机111和压缩机112通过轴113彼此连接。
进气管路120将空气供应到发动机10。流入进气管路120的空气可通过空气滤清器121被净化。当压缩机112旋转时，从外部进入的空气被压缩以供应到发动机10。因此，供应压缩的空气以增强发动机10的输出。为了冷却经过增压器22的空气，可将中间冷却器122安装在进气管路120上。
根据节气阀130的打开程度来控制从进气管路120供应到发动机10的空气的流动。
第一排气管路140形成为排出排气歧管14的排气。包括催化剂的后处理器141可以安装在第一排气管路140上以减少排气的有害成分。
第二排气管路150被形成为使得排气的一部分经由涡轮机111加入到第一排气管路140。
根据排气门阀151的打开量来控制从第二排气管路150排出的排气的流动。
参照轻度混合动力电动车辆的扭矩传递，从发动机10产生的扭矩被传递到变速器20的输入轴，并且从变速器20的输出轴输出的扭矩经由差动齿轮设备50被传递到车轴。车轴使车轮60旋转，使得轻度混合动力电动车辆通过由发动机10产生的扭矩而行驶。
MHSG 30将电能转换成机械能或将机械能转换成电能。MHSG 30根据发动机10的输出起动发动机10或者发电。另外，MHSG 30可以辅助发动机10的扭矩。发动机10的扭矩可以被用作主扭矩，并且MHSG 30的扭矩可以用作辅助扭矩。发动机10和MHSG 30可以通过带32彼此连接。
电池40可以向MHSG 30供电，并且可以通过在再生制动模式下通过由MHSG 30回收的电力而被充电。电池40可以是48V电池。轻度混合动力电动车辆可进一步包括将从电池40供应的电压转换成低电压的低电压电池DC-DC转换器(LDC)，以及将低电压供应到电气负载(例如，头灯和空调)的低电压电池(例如，12V电池)。
图3是示出根据本发明的示例性实施例的用于控制轻度混合动力电动车辆的MHSG的装置的框图。
如图3所示，根据本发明的示例性实施例的用于控制MHSG的装置包括数据检测器70和控制器80。
数据检测器70检测用于控制MHSG 30的数据，并且由数据检测器70检测到的数据被发送到控制器80。数据检测器70可以包括加速器踏板位置检测器71、发动机转速检测器72、进气压力检测器73，进气量检测器74和进气温度检测器75。数据检测器70还可以包括用于控制轻度混合动力电动车辆的检测器(例如，制动踏板位置检测器、SOC检测器等)。
加速器踏板位置检测器71检测加速器踏板的位置值(即，加速器踏板的压下程度)，并将与其对应的信号发送到控制器80。当加速器踏板被完全压下时，加速器踏板的位置值为100％，当加速器踏板未被压下时，加速器踏板的位置值为0％。
发动机转速检测器72检测发动机10的转速，并将与其对应的信号发送到控制器80。发动机转速检测器72可以从曲轴的相位变化中检测发动机10的转速。
进气压力检测器73检测供应到发动机的空气的压力(进气压力)，并且将与其对应的信号发送到控制器80。
进气量检测器74检测供应到发动机10的空气的流量(进气量)，并将与其对应的信号发送到控制器80。
进气温度检测器75检测供应到发动机10的空气的温度(进气温度)，并将与其对应的信号发送到控制器80。
控制器80基于由数据检测器70检测到的数据来控制MHSG 30。控制器80可以确定目标升压压力，并且可以基于该数据确定MHSG 30的目标扭矩以防止涡轮迟滞。控制器80可以利用通过预定程序执行的一个或多个处理器来实现，并且预定程序可以包括用于执行根据本发明的示例性实施例的用于控制轻度混合动力电动车辆的MHSG的方法中包括的每个步骤的一系列命令。
图4是示出根据本发明的示例性实施例的控制轻度混合动力电动车辆的MHSG的方法的流程图。
如图4所示，根据本发明的示例性实施例的控制轻度混合动力电动车辆的MHSG的方法开始于在步骤S100中检测用于控制MHSG 30的数据。换言之，加速器踏板位置检测器71检测加速器踏板的位置值，发动机转速检测器72检测发动机10的转速，进气压力检测器73检测进气压力，进气量检测器74检测进气量，并且进气温度检测器75检测进气温度。
在步骤S110中，控制器80基于数据确定目标升压压力TBP。例如，控制器80可以基于加速器踏板的位置值、发动机10的转速、进气量和进气温度来确定目标升压压力TBP。
在步骤S120中，控制器80将目标升压压力TBP和进气压力之间的差值D1与预定值P1进行比较。预定值P1可以被设为由本领域技术人员确定的值以确定进气压力是否跟随(follow)目标升压压力TBP。当进气压力不能跟随目标升压压力TBP时，可能会出现涡轮迟滞。
当在步骤S120中差值D1小于预定值P1时，由于涡轮迟滞没有发生，所以在步骤S160中，控制器80可以不产生用于防止涡轮迟滞的MHSG 30的扭矩。
当在步骤S120中差值D1等于或大于预定值P1时，控制器80在步骤S130中确定MHSG30的目标扭矩。MHSG 30的目标扭矩可以基于目标升压压力(TBP)和进气压力之间的差值D1来确定。换句话说，随着差值D1增加，MHSG 30的目标扭矩可以增加以防止涡轮迟滞。
在步骤S140中，控制器80可以控制MHSG 30以产生MHSG 30的目标扭矩。因此，目标升压压力TBP与进气压力之间的差值D1减小，从而防止涡轮迟滞。
在控制MHSG 30以产生MHSG 30的目标扭矩的同时，在步骤S150中，控制器80可以将目标升压压力TBP和进气压力之间的差值与预定值P1进行比较。
当在步骤S150中目标升压压力TBP与进气压力之间的差值D1等于或大于预定值P1时，控制器80继续执行步骤S100至S140。
当在步骤S150中差值D1小于预定值P1时，在步骤S160中，控制器80可以不产生用于防止涡轮迟滞的MHSG 30的扭矩。
如上所述，根据本发明的示例性实施例，可以通过使用MHSG 30的扭矩来防止涡轮迟滞。因此，可以改善轻度混合动力电动车辆的加速感受。
为了便于解释和精确限定权利要求书，术语“上部”、“下部”、“内部”、“外部”、“上”、“下”、“向上”、“向下”、“前部”、“后部”、“后”、“内侧”、“外侧”、“向内”、“向外”、“内部”、“外部”、“内部”、“外面”、“前进”和“后退”用于参考如附图中显示的这些特征的位置来描述示例性实施例的特征。
已经出于说明和描述的目的给出了本发明的特定示例性实施例的前述描述。它们不旨在是穷尽性的或者将本发明限制到所公开的确切形式，而显然根据上述教导可以进行许多修改和变化。选择和描述示例性实施例是为了解释本发明的某些原理及其实际应用，以使本领域的其它技术人员能够制造和利用本发明的各种示例性实施例以及其各种替代和修改。本发明的范围意在由所附权利要求及其等价物限定。

Claims (11)

1.一种控制轻度混合动力电动车辆的轻度混合动力起动机发电机即MHSG的方法，所述方法包括：
检测用于控制所述MHSG的数据；
基于所述数据确定目标升压压力；
将所述目标升压压力与供应到发动机的空气的进气压力之间的差值与预定值进行比较；
当所述目标升压压力与所述进气压力之间的差值等于或大于所述预定值时，确定所述MHSG的目标扭矩；以及
控制所述MHSG产生MHSG的目标扭矩。
2.根据权利要求1所述的方法，其中，所述目标升压压力基于加速器踏板的位置值、发动机转速、空气的进气量以及空气的进气温度来确定。
3.根据权利要求1所述的方法，还包括：当所述目标升压压力和所述进气压力之间的差值小于所述预定值时，不产生用于防止涡轮迟滞的所述MHSG的扭矩。
4.根据权利要求1所述的方法，其中，所述MHSG的目标扭矩基于所述目标升压压力和所述进气压力之间的差值来确定。
5.根据权利要求1所述的方法，还包括：
在产生所述MHSG的目标扭矩的同时将所述目标升压压力和所述进气压力的差值与预定值进行比较；以及
当所述目标升压压力与所述进气压力之间的差值小于预定值时，不产生用于防止涡轮迟滞的所述MHSG的扭矩。
6.一种用于控制轻度混合动力电动车辆的轻度混合动力起动机发电机即MHSG的设备，所述设备包括：
数据检测器，检测用于控制MHSG的数据，所述MHSG起动发动机或通过所述发动机的输出发电；以及
控制器，被配置为基于所述数据确定目标升压压力；
其中，所述控制器被配置为当所述目标升压压力和供应到所述发动机的空气的进气压力之间的差值等于或大于预定值时，确定所述MHSG的目标扭矩，并且所述控制器被配置为控制所述MHSG产生所述MHSG的目标扭矩。
7.根据权利要求6所述的设备，其中，所述控制器被配置为基于加速器踏板的位置值、发动机转速、空气的进气量以及空气的进气温度来确定所述目标升压压力。
8.根据权利要求6所述的设备，其中，当所述目标升压压力和所述进气压力之间的差值小于所述预定值时，所述控制器不产生用于防止涡轮迟滞的所述MHSG的扭矩。
9.根据权利要求6所述的设备，其中，所述控制器被配置为基于所述目标升压压力和所述进气压力之间的差值来确定所述MHSG的目标扭矩。
10.根据权利要求6所述的设备，其中，在产生所述MHSG的目标扭矩的同时，当所述目标升压压力和所述进气压力之间的差值小于所述预定值时，所述控制器不产生用于防止涡轮迟滞的所述MHSG的扭矩。
11.根据权利要求6所述的设备，其中，所述数据检测器包括：
加速器踏板位置检测器，检测加速器踏板的位置值；
发动机转速检测器，检测发动机转速；
进气压力检测器，检测进气压力；
进气量检测器，检测空气的进气量；以及
进气温度检测器，检测空气的进气温度。
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