CN106240573A - 混合动力电动车辆的氧气传感器诊断控制系统 - Google Patents

混合动力电动车辆的氧气传感器诊断控制系统 Download PDF

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CN106240573A
CN106240573A CN201510955591.2A CN201510955591A CN106240573A CN 106240573 A CN106240573 A CN 106240573A CN 201510955591 A CN201510955591 A CN 201510955591A CN 106240573 A CN106240573 A CN 106240573A
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oxygen sensor
diagnosis
vehicle
condition
mixture control
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CN106240573B (zh
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李载文
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Hyundai Motor Co
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Hyundai Motor Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
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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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
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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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
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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
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  • Engineering & Computer Science (AREA)
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  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

本发明提供一种混合动力电动车辆的氧气传感器诊断控制系统。混合动力电动车辆的系统消除氧气传感器的很多诊断的不确定性并限制在混合动力电动车辆中的氧气传感器的诊断。混合动力电动车辆的系统包括混合控制器，所述混合控制器操作车辆并基于通过计算氧气传感器诊断指标所获得的结果确定氧气传感器诊断模式的转换。另外，当氧气传感器诊断指标下降以启动诊断诱发模式或强制诊断模式时，所述控制器确定是否满足诊断所述氧气传感器的条件。

Description

混合动力电动车辆的氧气传感器诊断控制系统
技术领域
本发明涉及混合动力电动车辆的氧气传感器诊断控制系统，以及更具体地，涉及混合动力电动车辆中用于消除氧气传感器的很多诊断的不确定性和限制混合动力电动车辆中氧气传感器的无益诊断的氧气传感器诊断控制系统。
背景技术
一般来说，氧气传感器安装在混合动力电动车辆(HEV：hybridelectric vehicle)中以满足废气排放法规、以及提供用于诊断氧气传感器激活的诊断功能以满足近年来在行业内强化的车载诊断(OBD：OnBoard Diagnostic)法规。在混合动力车辆中，诊断功能被配置成操作车辆的整体功能的混合控制器(HCU：hybrid controller)和配置成操作发动机的发动机管理系统(EMS：engine management system)执行。实施或解除发动机和燃料的喷射由HCU确定，以及EMS在HCU的控制下操作发动机。
在混合动力车辆中，氧气传感器的诊断在每个驱动周期重复执行以满足行业内的法规。因此，氧气传感器的诊断可基于驾驶员和道路环境没有必要或不频繁执行。由于驾驶员和道路状况的不同，氧气传感器的诊断条件设置得更广泛以满足法规，但是法规满足结果是不确定的。
在本节中公开的上述信息仅用于加强对本发明背景的理解，因此可能包含本领域普通技术人员已经熟知的不形成现有技术的信息。
发明内容
本发明提供HEV中用于满足氧气传感器的诊断法规并防止由于氧气传感器的频繁诊断所造成的驱动效率下降的氧气传感器诊断控制器系统。
根据一个方面，本发明的示例性实施例提供混合动力电动车辆的氧气传感器诊断控制系统，该系统可包括混合控制器，混合控制器可配置成收集混合动力电动车辆的行驶状态信息并操作包括发动机和驱动电动机。混合控制器可配置成基于通过计算氧气传感器诊断指标所获得的结果确定氧气传感器诊断模式的转换，并当氧气传感器诊断指标下降而启动诊断诱发模式或强制诊断模式时，确定是否满足诊断氧气传感器的条件。
在一些示例性实施例中，在车辆在滑行时，当可能发生导致诊断诱发模式启动的氧气传感器指标下降时，可能不满足电池的充电状态(SOC)是预定值或更小值的条件和再生制动功率是预定值或更大值的条件中的一个条件。混合控制器可配置成保持发动机的燃料喷射的解除并连接发动机离合器以满足诊断氧气传感器的条件，以诱发氧气传感器诊断的。
在车辆操作在滑行状态时，当氧气传感器诊断指标下降并可能启动强制诊断模式时，混合控制器可配置成限制再生制动而不管电池的SOC如何。再生制动功率值可连接发动机离合器，并且可保持燃料喷射的解除以满足诊断氧气传感器的条件，以诱发氧气诊断。
响应于确定燃料喷射同时车辆行驶被打开以及EMS可诊断氧气传感器，当氧气传感器诊断指标下降以启动强制诊断模式时，混合控制器可配置成强制解除燃料喷射以满足诱发氧气传感器诊断的诊断氧气传感器的条件。
响应于确定当氧气传感器诊断指标下降以启动强制诊断模式时，燃料喷射可解除(例如，断开状态)并且车辆可被停止。因此，混合控制器可配置成强制操作发动机实施发动机的燃料喷射，并且当EMS诊断氧气传感器时，混合控制器可配置成解除燃料喷射以满足诊断氧气传感器的条件，以诱发氧气传感器诊断的。
根据本发明的HEV的氧气传感器诊断控制系统可消除HEV的氧气传感器的许多诊断的不确定性以减少不满足相关法规。另外，可将氧气传感器的无益诊断减到最少以降低过度执行的氧气传感器的诊断次数，从而避免不满足法规。
附图说明
现将参考通过附图示出的某些示例性实施例来详细描述本发明的上述和其他特征：
图1和图2是示出根据本发明的示例性实施例的HEV的氧气传感器诊断指标的氧气传感器诊断模式确定方法(区域)；
图3是示出用于转换至根据本发明的示例性实施例确定的氧气传感器诊断模式的行驶模式的示例性视图；以及
图4是示出根据本发明示范性实施例的HEV的氧气传感器诊断控制过程的示例性流程图。
具体实施方式
在下文中，将描述本发明以便本发明所属领域的技术人员能够容易执行本发明。虽然本发明结合示例性实施例进行描述，但是应当理解本描述并不旨在使本发明局限于那些示例性实施例。相反，本发明不仅旨在覆盖示例性实施例，而且各种替代、更改、等同和其他示例性实施例也包含在由本发明附属权利要求所限定的实质范围内。
应当理解本文使用的术语“车辆”或“车辆的”或类似术语包括一般的机动车例如乘用车，包括运动型多功能车(SUV)、公共车辆、卡车、各种商用车辆，包括各种乘船和船舰的水运工具，航空器等，并且包括混合动力车辆、电动车辆、插电式混合动力电动车辆、混合动力车辆以及其他替代燃料(例如，从不是石油的资源获取燃料)车辆。正如本文所引用的，混合动力车辆是具有两种或多种动力源的车辆，例如包括汽油动力和电动力的车辆。
虽然示例性实施例被描述成使用多个单元执行示例性过程，但是应当理解，所述示例性过程也可由一个或多个模块执行。此外，应当理解，所述术语控制器/控制单元指的是包括存储器和处理器的硬件装置。所述存储器配置成存储模块，以及所述处理器经专门配置执行所述模块以执行在下面进一步描述的一个或多个过程。
而且，本发明的控制逻辑可实施为在计算机可读介质上的非暂态计算机可读介质，其中所述计算机可读介质包含由处理器、控制器/控制单元等执行的可执行程序指令。计算机可读介质的示例包括但不限于ROM、RAM、光盘(CD)-ROM、磁带、软盘、闪存驱动器、智能卡和光数据存储装置。所述计算机可读记录介质还可以分布在联网计算机系统中，以便计算机可读介质以分布方式例如通过远程信息处理服务器或控制器区域网络(CAN)来存储和执行。
本文所使用术语仅用于描述特定实施例的目的，并不旨在限制本发明。正如本文所使用的，单数形式“一种”、“一个”、“该”旨在也包括复数形式，除非上下文明确指出不同。还应当理解，当用于本说明书时，术语“包括”指定陈述特征、整数、步骤、操作、元件和/或组件的存在，但不排除一个或多个其他特征、整数、步骤、操作、元件、组件和/或其组合的存在和添加。正如本文所使用的，术语“和/或”包括一个或多个关联列出项目中的任意一个和全部组合。
正如本文所使用的，除非特别指出或在上下文中是显而易见的，术语“大约”应当理解为在本领域正常公差范围内，例如在平均值的2个标准偏差内。“大约”可以理解为在规定值的10％、9％、8％、7％、6％、5％、4％、3％、2％、1％、0.5％、0.1％、0.05％或0.01％内。除非在上下文中是特别明确的，本文提供的所有数值可以通过术语“大约”来修饰。
本发明涉及混合动力电动车辆HEV的氧气传感器的诊断控制，并且通过优化发动机管理系统(EMS)的氧气传感器的诊断次数，可提高与基率监测(RBM：rate base monitoring)法规相关的性能。如在本领域中是已知的，氧气传感器诊断指标使用诊断的次数和分母来计算。例如，分母通过由RBM法规确定的共同特性确定基准来确定。因此，车辆的氧气传感器诊断指标基于氧气传感器的诊断次数而改变。例如，氧气传感器诊断指标是指氧气传感器的诊断次数(分子)对行驶次数(分母)的比率。当车辆行驶在由所述法规确定的状况中时，分母增加，并且当执行诊断时，分子增加。换句话说，氧气传感器诊断指标起通知用户如何频繁执行氧气传感器诊断的指标的作用。
图1和图2是示出基于HEV的氧气传感器诊断指标的氧气传感器诊断模式确定方法(区域)的示例性示意图。参考图1和图2，混合控制器(HCU)可基于通过计算氧气传感器指标所获得的结果确定氧气传感器诊断模式的转换，并且可配置成将氧气传感器诊断模式转换为强制诊断模式(例如，在强制诊断模式中诊断氧气传感器)。当氧气传感器诊断指标是强制诊断基准值或更大值时，氧气传感器诊断模式可转换为诊断诱发模式(例如，在诊断诱发模式中诊断氧气传感器)。当氧气传感器诊断指标是诊断诱发基准值或更大值并且小于强制诊断基准值时，如果氧气传感器诊断指标小于诊断诱发基准值，则氧气传感器诊断模式可转换为正常模式或保持在正常模式中的氧气传感器诊断模式(例如，在正常模式中诊断氧气传感器)。
混合控制器(HCU)可配置成基于设置在通用方法中计算氧气传感器诊断指标并基于计算结果确定氧气传感器诊断模式。例如，当满足在所确定的诊断模式中诊断氧气传感器的条件时，信号可配置成传送至EMS以允许EMS诊断氧气传感器。EMS可向混合控制器(HCU)传送对应信号以允许混合控制器(HCU)识别出氧气传感器可被诊断。另外，氧气传感器可在混合控制器(HCU)的控制下来诊断。例如，用于诊断氧气传感器的条件可对应于燃料喷射的解除和对应于预定值或更大值的发动机每分钟转数(RPM)。
诊断诱发基准值可以是比正常模式中的氧气传感器诊断指标更小的诊断基准值以及可以是基于车辆状态诱发氧气传感器所需的值(例如，电池的SOC和再生制动功率条件)。强制诊断基准值可以是比正常模式中的氧气传感器诊断指标更小的诊断指标值并且可以比诊断诱发基准值更小并且可以是不管车辆如何强制诱发氧气传感器所需的值。
一般来说，诊断氧气传感器的氧气传感器自动诊断诱发或强制诊断氧气传感器可能是不必要的。另外，诊断诱发基准值和强制诊断基准值可由最小可接受在用监测性能比(minimum acceptable in-usemonitor performance ratio)的倍数确定，所述最小可接受在用监测性能比可由与基率监测(RBM)相关的法规确定，以及所述倍数是指经确定满足由法规确定的性能比的安全因数。例如，当性能比约为0.125时，用于强制诊断模式的氧气传感器诊断指标(例如，强制诊断基准值)可约为0.125X 2(安全因数：2)＝0.25，以及用于诊断诱发模式的氧气传感器诊断指标(例如，诊断诱发基准值)可约为0.125X4(安全因数：4)＝0.5。例如，在正常模式中，氧气传感器诊断指标可约为1。
当在计算氧气传感器诊断指标后氧气传感器诊断指标低于预定水平时，混合控制器(HCU)可配置成将氧气传感器的诊断模式转换为诊断诱发模式以增加氧气传感器的诊断次数并诱发氧气传感器诊断指标的增加。具体地，当没能在诊断诱发模式中增加氧气传感器诊断指标增加而减小时，混合控制器(HCU)可配置成将氧气传感器的诊断模式转换为强制诊断模式以强制增加氧气传感器的诊断次数并增加氧气传感器诊断指标。
当满足已知的分母条件(例如，预定车辆状态条件)时，分母可增加并且氧气传感器诊断指标可增加，混合控制器(HCU)可基于由氧气传感器诊断指标确定的氧气传感器诊断模式执行合适的控制。例如，分母条件可由与基率监测(RBM)相关的法规确定，并且可包括大于约10分钟的行程、小于约8000英尺的海拔、大于约20F的环境温度、在约25mph或更大mph下大于5分钟的工作时间以及约30秒钟或更长时间的至少一种怠速状态的保持。在车辆在滑行时，当所计算的氧气传感器诊断指标小于基准值(例如，正常模式的氧气传感器诊断指标)时，混合控制器可配置成将再生制动余量(allowance of theregenerative brake)限制为预定条件。
一般来说，混合动力电动车辆通过在滑行状态中的再生制动收回能量，并且发动机和驱动电动机之间的物理联接(例如，用于向电动机轴传送发动机动力的发动机离合器)可解除，并且发动机速度条件不满足诊断氧气传感器的条件，从而阻止诊断氧气传感器。
因此，在滑行过程中，当氧气传感器诊断指标下降并且氧气传感器诊断模式转换为诊断诱发模式时，混合控制器可配置成在小于预定电池的SOC并大于预定再生制动的条件中允许再生制动。换句话说，当电池的SOC小于需要充电的预定值并且再生制动功率(例如，再生制动转矩)大于燃料比可通过再生制动提高的预定值时，混合控制器可配置成解除发动机离合器并可配置成允许车辆在电动车辆(EV)模式中驱动，使得能量可通过再生制动收回。当识别出电池的SOC条件和再生制动功率条件以及不满足电池的SOC是预定值或更小值的条件(例如，再生制动转矩)和再生制动功率是预定值或更大值的条件时，可保持燃料喷射的解除并且发动机离合器可被连接并且车辆可在被动模式下行驶。氧气传感器的诊断可通过满足诊断氧气传感器的条件来诱发。
诊断诱发模式需要氧气传感器的诊断，不过，当电池的充电量相当大时，氧气传感器的诊断可被中止以通过再生制动提高燃料比，例如，再生制动功率可以是预定值。在电池的SOC是预定值或更小值的条件和再生制动功率是预定值或更大值的条件中，通过最初试验确定的值和在实际车辆条件中的评估值可用作预定值。
与当车辆在被动模式中行驶(燃料喷射被切断并且发动机离合器被连接)时相比，当车辆在滑行行驶状态中以电动车辆模式(例如，燃料喷射被切断并且发动机离合器被解除)行驶时，可生成对应于发动机摩擦转矩的再生制动转矩。换句话说，当车辆在滑行行驶状态中以电动车辆模式行驶时，可生成对应于发动机摩擦转矩的再生制动转矩。因此，在车辆在滑行时，当氧气传感器需要诊断时，车辆可被限制在被动模式中行驶，并且车辆在正常行驶状态中的电动车辆模式行驶，从而提高燃料比。例如，当氧气传感器在诊断诱发模式中诊断时，通过考虑电池的SOC条件和当车辆在滑行时所生成的再生制动功率，混合控制器可配置成选择电动车辆模式和被动模式中的一种模式(参见图3)。
当氧气传感器诊断指标下降并且在车辆在滑行时氧气传感器诊断模式转换为强制诊断模式时，混合控制器可配置成限制(禁止)再生制动而不管电池的SOC条件和再生制动功率条件。因此，车辆可通过保持燃料喷射的解除(例如，发动机燃料被中断)并连接发动机离合器在被动模式中行驶以满足诊断氧气传感器的条件并因此诱发氧气传感器的诊断。当发动机的RPM等于预定值或更大值时，发动机离合器可被连接以限制再生制动，并且当发动机的RPM是预定值或更小值时，发动机离合器可被解除并且通过诱发氧气传感器诊断的HSG，发动机的RPM可保持在预定值或更大值。当车辆在被动模式中行驶时，发动机可由从车辆的车轮传送的动力驱动，并且可满足诊断氧气传感器的发动机速度(RPM)条件。
参考图3，当氧气传感器在正常模式中诊断时，混合控制器可配置成允许车辆在电动车辆模式中行驶，并且当氧气传感器在诊断诱发模式中诊断时，车辆可基于电池SOC条件和再生制动功率条件在电动车辆模式或被动模式中行驶。另外，当氧气传感器在强制诊断模式中诊断时，车辆可被限制在被动模式中行驶。
例如，电动车辆模式允许混合动力车辆的燃料喷射解除并且电动机可在发动机离合器解除的状态中行驶，被动模式允许混合动力车辆的燃料喷射解除并且发动机可通过发动机离合器的连接由从车辆的车轮传送的动力驱动，以及滑行模式(滑行驱动)允许燃料喷射在行驶状态中解除(例如，车辆以特定速度行驶)并且车辆可以以车辆的速度驱动。
参考图4，当氧气传感器的诊断模式是强制诊断模式时，在车辆在行驶时燃料喷射被实施(engage)并基于EMS收到的信号确定EMS可诊断氧气传感器时，混合控制器强制解除发动机的燃料喷射以满足诊断氧气传感器的条件，以便氧气传感器可由EMS进行诊断以诱发氧气传感器的诊断。因此，在车辆在燃料喷射被解除时滑行时，可满足诊断氧气传感器的条件(例如，切断燃料喷射和发动机速度)。
当氧气传感器的诊断模式可转换为强制诊断模式时，车辆停止并且燃料喷射解除时，混合控制器可配置成使用用于操作发动机的混合起动发电机(HSG)强制(无条件)操作发动机并实施发动机的燃料喷射。当EMS基于EMS收到的信号诊断氧气传感器时，混合控制器可配置成解除(disengage)燃料喷射以允许氧气传感器被EMS诊断(例如，通过满足诊断氧气传感器的条件)，以诱发氧气传感器的诊断。另外，在车辆在燃料喷射被解除时通过惯性力旋转时，可满足诊断氧气传感器的条件(切断燃料喷射和发动机速度)。
例如，当车辆通过操作发动机在行驶时，发动机可由于电池的SOC和全自动温度控制(FATC：full automatic temperature control)而起作用。氧气传感器可由于强制诊断模式基于诊断氧气传感器的请求通过强制限制发动机的燃料喷射来诊断。当车辆停止时，氧气传感器可使用混合起动发电机(HSG：hybrid starter generator)并解除燃料喷射通过操作发动机来诊断。
虽然已详细描述了本发明，但是本发明的范围并不局限与此，本领域的技术人员可使用在权利要求中定义的本发明的基本原理进行各种更改和改善，所有更改和改进也落入本发明的范围内。

Claims (7)

1.一种混合动力电动车辆的氧气传感器诊断控制系统，包括：
配置成储存程序指令的存储器；以及
混合控制器，所述混合控制器配置成执行所述程序指令，当执行所述程序指令时，所述程序指令配置成：控制车辆的整体功能，其中，所述混合控制器配置成基于通过计算氧气传感器诊断指标所获得的结果确定氧气传感器诊断模式的转换，并且配置成当所述氧气传感器诊断指标下降而启动诊断诱发模式或强制诊断模式时，确定是否满足诊断氧气传感器的条件。
2.根据权利要求1所述的氧气传感器诊断控制系统，其中，当所述车辆在滑行时，所述氧气传感器诊断指标下降并启动所述诊断诱发模式时，如果不满足多个条件中的一个条件，则所述混合控制器配置成保持发动机的燃料喷射的解除并连接发动机离合器以满足诱发氧气传感器诊断的条件，所述多个条件包括：电池的充电状态等于或小于预定值以及再生制动功率大于或等于预定值。
3.根据权利要求1所述的氧气传感器诊断控制系统，其中，在所述车辆滑行时，所述氧气传感器诊断指标下降并启动所述强制诊断模式时，所述混合控制器配置成限制再生制动、连接发动机离合器并保持燃料喷射的解除以满足诊断所述氧气传感器的条件，来诱发所述氧气传感器诊断。
4.根据权利要求1所述的氧气传感器诊断控制系统，其中，当所述氧气传感器诊断指标下降并启动所述强制诊断模式时，当燃料喷射被实施并且发动机管理系统(EMS)诊断所述氧气传感器时，所述混合控制器配置成解除所述燃料喷射以诱发所述氧气传感器的诊断。
5.根据权利要求1所述的氧气传感器诊断控制系统，其中，当所述 氧气传感器诊断指标下降并且启动所述强制诊断模式时，如果燃料喷射处于切断状态并且所述车辆停止，则所述混合控制器配置成操作发动机以实施所述发动机的燃料喷射，并且当所述EMS诊断所述氧气传感器时，所述混合控制器解除所述燃料喷射，从而诱发所述氧气传感器的诊断。
6.一种混合动力电动车辆的氧气传感器诊断装置，包括：
配置成操作车辆的整体功能的混合控制器；以及
配置成计算氧气传感器诊断指标的氧气传感器，
其中，当氧气传感器诊断指标下降并启动诊断诱发模式或强制诊断模式时，所述混合控制器配置成确定是否满足诊断所述氧气传感器的条件。
7.根据权利要求1所述的氧气传感器诊断装置，还包括：
电池，在所述车辆在滑行时，其充电状态小于或等于预定值，并且不满足再生制动功率大于或等于预定值的条件，所述氧气传感器诊断指标下降并启动所述诊断诱发模式。
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