CN114127407A - 用于诊断内燃机的燃料蒸发约束系统的方法和设备 - Google Patents
用于诊断内燃机的燃料蒸发约束系统的方法和设备 Download PDFInfo
- Publication number
- CN114127407A CN114127407A CN202080053074.5A CN202080053074A CN114127407A CN 114127407 A CN114127407 A CN 114127407A CN 202080053074 A CN202080053074 A CN 202080053074A CN 114127407 A CN114127407 A CN 114127407A
- Authority
- CN
- China
- Prior art keywords
- pressure
- tank
- engine control
- temperature
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 34
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000001704 evaporation Methods 0.000 title claims abstract description 17
- 230000008020 evaporation Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002828 fuel tank Substances 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000010792 warming Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 21
- 238000009423 ventilation Methods 0.000 description 12
- 238000003745 diagnosis Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0809—Judging failure of purge control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0809—Judging failure of purge control system
- F02M25/0827—Judging failure of purge control system by monitoring engine running conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03236—Fuel tanks characterised by special filters, the mounting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
- B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0854—Details of the absorption canister
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
本发明涉及一种用于诊断内燃机的燃料蒸发约束系统的方法,所述内燃机具有发动机控制部和压力及温度传感装置,其中,为了对燃料蒸发约束系统的油箱区域进行密封性试验,在切断发动机控制部之后在车辆停止状态期间,在油箱容积恒定的情况下在规定的时间范围内使用由燃料箱中的气体体积的温度变化引起的压力变化;在接通发动机控制部之后依赖于油箱液位,将从在燃料箱冷却或者加温时给定的温度特征曲线中所预期的压力特征曲线与从先前的车辆停止状态阶段中实际上所测量的压力特征曲线进行比较;并且如果所测量的压力特征曲线处于围绕所预期的压力特征曲线的可调节的范围内,则识别出存在密封的油箱。此外,本发明涉及一种用于诊断内燃机的燃料蒸发约束系统的设备。
Description
技术领域
本发明涉及一种用于诊断内燃机的燃料蒸发约束系统的方法和设备。
背景技术
为了限制有害物质排放,由内燃机所驱动的现代的机动车辆装备有通常被称作油箱通气装置的燃料蒸发约束系统。这类设备的目的在于,吸收并且暂时地储存在燃料箱中由于汽化而形成的燃料蒸汽,使得燃料蒸汽不会泄漏到环境中。作为用于燃料蒸汽的储存器,在燃料蒸发约束系统中设置了燃料蒸汽约束过滤器,例如使用活性炭作为储存介质。燃料蒸汽约束过滤器仅具有用于燃料蒸汽的有限的储存容量。为了能够在长的时间段范围内使用燃料蒸汽约束过滤器,该燃料蒸汽约束过滤器必须被再生。为此,在燃料蒸汽约束过滤器与内燃机的进气管之间的管路中布置了能控制的油箱通气阀,该油箱通气阀为了执行再生而被打开,使得一方面在燃料蒸汽约束过滤器中所吸附的燃料蒸汽由于在进气管中的负压而泄漏到该进气管中并且于是被输送给内燃机的吸入空气且因此被输送给燃烧过程,并且另一方面又形成了燃料蒸汽约束过滤器的对于燃料蒸汽的吸收能力。
发明内容
在下文中研究油箱系统,所述油箱系统配备有在活性炭过滤器的新鲜空气入口处的泄漏诊断单元。在图1中示出了针对这类的油箱系统的示例。在图1中所示出的油箱系统主要具有下述组成部件:
• 燃料箱1;
• 油箱截止阀2,通过所述油箱截止阀能够将在燃料箱1中产生的碳氢化合物蒸汽抑制在油箱中,以便随后以受控制的方式在合适的运行状态下将该碳氢化合物蒸汽输送给活性炭过滤器9;
• 油箱通气阀3,所述油箱通气阀能够构造为切换阀或者线性阀并且由发动机控制部4操控,以便调节从活性炭过滤器9到内燃机的通气路径5的气体流量;
• 在燃料箱1与油箱截止阀2之间的油箱通气管路6(油箱区域);
• 活性炭过滤器9,由燃料箱1以气体方式释放的碳氢化合物结合在所述活性炭过滤器中;
• 油箱通气管路7(过滤器区域),通过该油箱通气管路将碳氢化合物气体从燃料箱1引导到活性炭过滤器9中并且进一步引导到油箱通气阀3;
• 油箱通气管路8(发动机区域),通过所述油箱通气管路将碳氢化合物气体沿油箱通气阀3顺流而下从活性炭过滤器9引入到内燃机的通气路径5中;
• 在活性炭过滤器9与油箱通气阀3之间的油箱通气管路7(过滤器区域)中的压力传感器10;
• 在燃料箱1中的压力传感器和温度传感器或者组合的压力/温度传感器11;
• 发动机控制部4;所述发动机控制部主要:
1. 针对当前的运行状态,为从活性炭过滤器9到内燃机的通气路径的扫气流量求取目标值;
2. 借助于进气道中的压力传感器来求取进气管压力;
3. 读入压力或者说温度传感装置的值;
4. 由在活性炭过滤器9的新鲜空气过滤器13之间的压差和在内燃机的通气路径5中在导入位置处的压力、由预先给定的扫气流量来求取用于操控油箱通气阀3的PWM值;
5. 针对内燃机的当前的运行状态,计算有待注入的燃料量。
按照不同的特定于国家的法律规定或者说出于安全性原因而必需的是,确保或者说诊断包括燃料箱在内的燃料箱通气系统的功能性。
具体来说,有必要在密封性方面检测包括燃料箱直到油箱通气阀(参见图1中油箱区域23和过滤器区域24)在内的整个燃料蒸发系统。在此,存在关于最小的要诊断的泄漏直径的不同的法定的规定参数。
此外,应当确保沿油箱通气阀顺流而下的油箱通气管路的贯通性以及在内燃机的通气路径中维持在活性炭过滤器与油箱排气气体的导入位置之间质量流。这包括对油箱通气阀的功能性的检查。
对于带有或者有必要时也不带有油箱截止阀的在图中1所示出的已知的系统而言,由不同的法规制订者所要求的、对仅用于油箱区域和过滤器区域的燃料蒸发系统的密封性试验通过应用泄漏诊断泵(泄漏诊断单元12;参见图1)来实施。该泄漏诊断单元12使所述燃料蒸发系统根据规定的时间间隔在关停内燃机之后(车辆停止状态)置于压力下或者说产生真空。随后,则根据实施方式将形成的压力变化曲线或者说泄漏诊断单元所消耗的电功率考虑作为用于确定泄漏直径的评估标准。然而,这类的方式是耗时的,导致了用于操控泵的额外的能量消耗,并且在车辆停止时产生噪声排放。
对于用于诊断内燃机的燃料蒸发约束系统的按照本发明的方法来说:
- 为了对燃料蒸发约束系统的油箱区域进行密封性试验,在关停内燃机之后在车辆停止状态期间,在油箱容积恒定的情况下在规定的时间范围内使用由在燃料箱中的气体体积的温度变化引起的压力变化;
- 在接通内燃机的端子15之后依赖于油箱液位,将从在燃料箱冷却或者加温时给定的温度特征曲线中所预期的压力特征曲线与从先前的车辆停止状态阶段中实际上所测量的压力特征曲线进行比较;并且
- 如果所测量的压力特征曲线处于围绕所预期的压力特征曲线的可调节的范围内,则识别出存在密封的油箱。
附图说明
在下文中示例性地借助于附图阐述本发明。其中:
图1以示意性的图示示出了内燃机的已知的燃料蒸发约束系统;
图2示出了燃料蒸发约束系统的油箱区域;
图3示出了在诊断燃料蒸发约束系统时针对压力特征曲线和温度特征曲线的曲线图;
图4示出了用于阐释针对测量数据电子器件的第一种实施例的框图;并且
图5示出了用于阐释针对测量数据电子器件的第二种实施例的框图。
具体实施方式
为了在下文中阐释用于燃料蒸发系统的泄漏诊断的根据本发明的方法,示例性地研究在图2中所示出的具有封闭的油箱容积的油箱区域23。作为对此的替代方案,能够将在下文中所阐释的诊断原理应用于所有依赖于油箱截止组件或者说节流组件产生的容积,所述容积相比于环境压力水平具有受系统限制的压力差或者说压力阈值(例如过压阀、止回阀等)。
为了对在图2中所示出的油箱区域23进行密封性试验——燃料箱1、油箱截止阀2、油箱通气管路(油箱区域)6、组合的压力及温度传感器11和止回阀14属于所述油箱区域——在关停内燃机之后在车辆停止状态期间,在油箱容积恒定的情况下在所规定的时间范围内分析在燃料箱1中由气体体积的温度变化引起的压力变化。在此,在接通发动机控制部之后或者说接通端子15(点火端子)之后依赖于油箱液位,将从在对燃料箱冷却或者说加温时给定的温度特征曲线中所预期的压力特征曲线与从先前的车辆停止状态阶段中实际上所测量的压力特征曲线进行比较。如果所测量的压力特征曲线处于围绕所预期的压力特征曲线的可调节的范围(Korridor)内,则识别出存在密封的燃料箱。将给定的相关的、预先根据经验所求取的温度特征曲线和压力特征曲线在发动机控制部4中保存特性曲线族中。
为了能够示出所说明的温度特征曲线和压力特征曲线,在关停内燃机之后在车辆停止状态期间,在可调节的等待时间之后在可调节的时间间隔内由油箱温度和油箱压力构成测量值对。
在下文中,借助于图3针对冷却过程示例性地示出了值对的采集过程。在此,在图3中以向上绘制了端子15信号、压力和温度。以向右绘制了时间t。时间间隔26是采集周期。附图标记27阐明了位于采集周期之内的采集时间点。字母T阐明了等待时间,附图标记28阐明了分析测量值对的时间点,变化曲线K1阐明了在存在泄漏的情况下的压力的变化曲线,并且变化曲线K2阐明了在存在密封的系统的情况下的压力的变化曲线。
用于采集在图3中所阐明的压力特征曲线和在图3中所阐明的温度特征曲线所必需的测量传感装置具有组合的压力及温度传感器11,所述组合的压力及温度传感器在使用被设置用于采集和存储测量数据的测量数据电子器件33的情况下为此能够与控制器、例如发动机控制器通信。
该测量数据电子器件33要么集成到压力及温度传感器11的壳体中要么以单独的构件的形式来实现。
图4示出了第一种实施例的框图,其中所提到的测量数据电子器件集成到压力及温度传感器11a的壳体中。在该第一种实施例中,压力及温度传感器11a和因此测量数据电子器件都通过电压供应线路29而与电压源22连接。电压源22是以扣式电池的形式所实现的内部的电压源或者是外部的电压源、例如相应的机动车辆的端子30。此外在该第一种实施例中,压力及温度传感器11a通过通信线路30而与发动机控制部4连接。通信线路30能够是单边半字节传输(SENT)线路、局域互联网络(LIN)总线、控制器区域网络(CAN)总线、FlexRay线路或者模拟数据线路。
图5示出了用于分析测量值对的第二种实施例的框图,在所述框图中测量数据电子器件以单独的构件33的形式来实现。在该第二种实施例中,压力及温度传感器11通过第一通信线路31与测量数据电子器件33连接。此外,测量数据电子器件33通过第二通信线路32与发动机控制部4连接。此外,测量数据电子器件33通过电压供应线路29与电压源22连接。该电压源22是以扣式电池的形式所实现的内部的电压源或者外部的电压源、例如相应的机动车辆的端子30。通信线路31和32能够分别是单边半字节传输线路、局域互联网络总线、控制器区域网络总线、FlexRay线路或者模拟数据线路。
前面所说明的测量数据电子器件33被构造用于确保下述功能:
- 在供应电压的运行期间在接通发动机控制部的情况下将当前的压力和温度测量值向发动机控制部传输;
- 对在车辆停止状态期间在切断发动机控制部时在可调节的时间间隔内所记录的测量值对进行非易失性地存储,所述测量值对分别包括压力测量值和温度测量值;
- 在接通所述发动机控制部后,将在车辆停止状态期间在可调节的时间间隔内所记录的测量值对向发动机控制部传输。
通过上面所提到的根据本发明的技术上的特征得出下述优点:
- 取消诊断泵的必要性而引起了系统成本以及能源消耗的降低;
- 有别于其他的已知的诊断方法,在车辆停止状态期间,对燃料箱中的温度上升的分析能够用于求取在油箱区域内的泄漏。
在车辆停止状态期间无需主动地操控促动器,由此防止了噪声排放。
Claims (14)
1.一种用于诊断内燃机的燃料蒸发约束系统的方法,所述内燃机具有发动机控制部和压力及温度传感装置,其中:
- 为了对所述燃料蒸发约束系统的油箱区域进行密封性试验,在切断所述发动机控制部之后在车辆停止状态期间,在油箱容积恒定的情况下在规定的时间范围内使用由燃料箱中的气体体积的温度变化引起的压力变化;
- 在接通所述发动机控制部之后依赖于油箱液位,将从在燃料箱冷却或者加温时给定的温度特征曲线中所预期的压力特征曲线与从先前的车辆停止状态阶段中实际上所测量的压力特征曲线进行比较;并且
- 如果所述所测量的压力特征曲线处于围绕所述所预期的压力特征曲线的可调节的范围内,则识别出存在密封的油箱。
2.根据权利要求1所述的方法,其中,将相关的温度特征曲线和压力特征曲线在所述发动机控制部中保存在特性曲线族中。
3.根据权利要求1或者2所述的方法,其中,在切断所述发动机控制部之后在所述车辆停止状态期间,在可调节的等待时间之后在可调节的时间间隔内借助于所述压力及温度传感装置来求取来自油箱温度和油箱压力的测量值对。
4.根据权利要求3所述的方法,其中,将在所述车辆停止状态期间所构成的测量值对存储在测量数据电子器件(33)中。
5.根据权利要求4所述的方法,其中,在接通所述发动机控制部之后,将在所述车辆停止状态期间在所述测量数据电子器件(33)中所存储的测量值对向所述发动机控制部传输。
6.一种用于诊断内燃机的燃料蒸发约束系统的设备,所述内燃机具有发动机控制部和压力及温度传感装置,此外,所述设备具有测量数据电子器件(33),所述测量数据电子器件被构造用于,在切断发动机控制部(4)时在车辆停止状态期间在预先给定的时间间隔内存储测量值对,所述测量值对分别包括压力测量值和温度测量值,并且在接通所述发动机控制部(4)之后,将在切断发动机控制部时所存储的测量值对向所述发动机控制部输送。
7.根据权利要求6所述的设备,其中,所述燃料蒸发约束系统具有油箱区域(23),燃料箱(1)、油箱通气管路(6)、压力传感器(11)和温度传感器(11)属于所述油箱区域,其中,所述压力传感器和所述温度传感器构成压力及温度传感装置。
8.根据权利要求7所述的设备,其中,所述压力传感器和所述温度传感器以组合的压力及温度传感器(11)的形式来构成。
9.根据权利要求8所述的设备,其中,所述测量数据电子器件(33)集成到所述组合的压力及温度传感器(11)的壳体中。
10.根据权利要求7或者8所述的设备,其中,所述测量数据电子器件(33)作为单独的构件来构造。
11.根据权利要求6至10中任一项所述的设备,其中,所述测量数据电子器件(33)通过通信线路(30、32)与所述发动机控制部(4)连接。
12.根据权利要求6至11中任一项所述的设备,其中,所述测量数据电子器件(33)通过电压供应线路(29)而与电压源(22)连接。
13.根据权利要求12所述的设备,其中,所述电压源(22)是所述内燃机的端子30或者是扣式电池。
14.根据权利要求6至13中任一项所述的设备,其中,所述测量数据电子器件(33)此外被构造用于,在接通发动机控制部时将当前所求取的压力及温度测量值传递给所述发动机控制部。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019210900.4 | 2019-07-23 | ||
DE102019210900 | 2019-07-23 | ||
PCT/EP2020/070676 WO2021013887A1 (de) | 2019-07-23 | 2020-07-22 | Verfahren und vorrichtung zur diagnose eines kraftstoffverdunstungs-rückhaltesystems einer verbrennungskraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114127407A true CN114127407A (zh) | 2022-03-01 |
Family
ID=71784047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202080053074.5A Pending CN114127407A (zh) | 2019-07-23 | 2020-07-22 | 用于诊断内燃机的燃料蒸发约束系统的方法和设备 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11725610B2 (zh) |
KR (1) | KR20220034237A (zh) |
CN (1) | CN114127407A (zh) |
DE (1) | DE112020003540A5 (zh) |
WO (1) | WO2021013887A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020213935A1 (de) * | 2020-07-21 | 2022-01-27 | Vitesco Technologies GmbH | Verfahren und Vorrichtung zur Diagnose einer Verdunstungssystemleckage und einer Tankentlüftungsleitung einer Verbrennungskraftmaschine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060144370A1 (en) * | 2003-06-30 | 2006-07-06 | Yoichi Iihoshi | Device and method for diagnosing evaporation leak, and control device of internal combustion engine |
DE102005049776A1 (de) * | 2005-10-18 | 2007-04-19 | Robert Bosch Gmbh | Verfahren zur Prüfung der Dichtheit einer Tankenlüftungsanlage |
DE102009036263A1 (de) * | 2009-08-05 | 2011-02-10 | Daimler Ag | Verfahren zur Dichtheitsprüfung eines Tanksystems |
US20140109882A1 (en) * | 2012-10-18 | 2014-04-24 | Robert Bosch Gmbh | Method for monitoring the leak tightness of a fuel tank system |
US20150219522A1 (en) * | 2014-02-04 | 2015-08-06 | Ford Global Technologies, Llc | Correlation based fuel tank leak detection |
US20190017453A1 (en) * | 2016-12-22 | 2019-01-17 | Ford Global Technologies, Llc | Systems and methods for intelligent vehicle evaporative emissions diagnostics |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6321727B1 (en) * | 2000-01-27 | 2001-11-27 | General Motors Corporation | Leak detection for a vapor handling system |
US8689613B2 (en) | 2011-09-28 | 2014-04-08 | Continental Automotive Systems, Inc. | Leak detection method and system for a high pressure automotive fuel tank |
US9696234B2 (en) * | 2014-07-25 | 2017-07-04 | Ford Global Technologies, Llc | Evaporative emissions testing based on historical and forecast weather data |
US10677197B2 (en) * | 2016-02-18 | 2020-06-09 | Ford Global Technologies, Llc | Evaporative emissions diagnostic during a remote start condition |
EP3409936A1 (en) * | 2017-05-31 | 2018-12-05 | Plastic Omnium Advanced Innovation and Research | Method and system for determining a leak present in a pressurized fuel system |
JP6690757B1 (ja) * | 2019-04-16 | 2020-04-28 | トヨタ自動車株式会社 | 燃料蒸気排出防止システムの異常検出装置 |
-
2020
- 2020-07-22 DE DE112020003540.9T patent/DE112020003540A5/de active Pending
- 2020-07-22 US US17/629,064 patent/US11725610B2/en active Active
- 2020-07-22 KR KR1020227005483A patent/KR20220034237A/ko not_active Application Discontinuation
- 2020-07-22 CN CN202080053074.5A patent/CN114127407A/zh active Pending
- 2020-07-22 WO PCT/EP2020/070676 patent/WO2021013887A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060144370A1 (en) * | 2003-06-30 | 2006-07-06 | Yoichi Iihoshi | Device and method for diagnosing evaporation leak, and control device of internal combustion engine |
DE102005049776A1 (de) * | 2005-10-18 | 2007-04-19 | Robert Bosch Gmbh | Verfahren zur Prüfung der Dichtheit einer Tankenlüftungsanlage |
DE102009036263A1 (de) * | 2009-08-05 | 2011-02-10 | Daimler Ag | Verfahren zur Dichtheitsprüfung eines Tanksystems |
US20140109882A1 (en) * | 2012-10-18 | 2014-04-24 | Robert Bosch Gmbh | Method for monitoring the leak tightness of a fuel tank system |
US20150219522A1 (en) * | 2014-02-04 | 2015-08-06 | Ford Global Technologies, Llc | Correlation based fuel tank leak detection |
US20190017453A1 (en) * | 2016-12-22 | 2019-01-17 | Ford Global Technologies, Llc | Systems and methods for intelligent vehicle evaporative emissions diagnostics |
Also Published As
Publication number | Publication date |
---|---|
KR20220034237A (ko) | 2022-03-17 |
US11725610B2 (en) | 2023-08-15 |
WO2021013887A1 (de) | 2021-01-28 |
US20220275775A1 (en) | 2022-09-01 |
DE112020003540A5 (de) | 2022-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101029143B1 (ko) | 연료 증발 배출물 제어 시스템의 작동 방법 | |
US8630786B2 (en) | Low purge flow vehicle diagnostic tool | |
US9255553B2 (en) | Leak detection for canister purge valve | |
US8327695B2 (en) | Restricted filter diagnostic system and method | |
US10316800B2 (en) | Modular fuel vapor canister | |
US10012166B1 (en) | System and method for diagnosing a postive crankcase ventilation valve | |
US6378505B1 (en) | Fuel tank pressure control system | |
KR20150023816A (ko) | 충돌 시에 연료 시스템의 압력을 릴리즈하는 방법 | |
CN114215664B (zh) | 一种燃油车用蒸发系统泄漏诊断方法及系统 | |
US9109548B2 (en) | Internal orifice characterization in leak check module | |
KR101262195B1 (ko) | 자동차용 탱크 통기 장치를 제어하기 위한 장치 및 방법 | |
JP2004536998A (ja) | 特に自動車の燃料タンク装置タンク通気弁の機能診断方法およびその制御装置 | |
US20150046026A1 (en) | Engine-off leak detection based on pressure | |
US10350993B2 (en) | Fuel system having multiplex director | |
KR20170025156A (ko) | 차량 연료 시스템의 리크 진단 방법 및 그 진단 장치 | |
CN114127407A (zh) | 用于诊断内燃机的燃料蒸发约束系统的方法和设备 | |
US20070079650A1 (en) | Method and apparatus for checking the tightness of a tank system, in particular of a motor vehicle | |
EP2171248B1 (en) | Evaporative emission canister purge actuation monitoring system | |
US6446615B2 (en) | Method and arrangement for detecting icing in pumps utilized in the diagnosis of tank leakage in motor vehicles | |
US20150120165A1 (en) | Evaporative Emission Control System Monitoring | |
US9091227B2 (en) | Leak detection based on fuel level | |
US20230151780A1 (en) | Method And Device For Diagnosing A Leak In An Evaporation System And In A Tank Ventilation Line Of An Internal Combustion Engine | |
US11525422B1 (en) | Diagnostic for a fuel canister heating system | |
WO2018045100A1 (en) | Fuel tank system and method for detecting automotive fuel system leaks | |
LU101983B1 (en) | Vehicle fuel system with vapour pressure control |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |