CN104763503B - For monitoring the method for component in I. C. engine exhaust channel, the device for implementing this method, computer program and computer program product - Google Patents

For monitoring the method for component in I. C. engine exhaust channel, the device for implementing this method, computer program and computer program product Download PDF

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Publication number
CN104763503B
CN104763503B CN201410858493.2A CN201410858493A CN104763503B CN 104763503 B CN104763503 B CN 104763503B CN 201410858493 A CN201410858493 A CN 201410858493A CN 104763503 B CN104763503 B CN 104763503B
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China
Prior art keywords
component
vgpf
ngpf
exhaust
exhaust pressure
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CN201410858493.2A
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Chinese (zh)
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CN104763503A (en
Inventor
T·蔡因
M·维利莫夫斯基
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罗伯特·博世有限公司
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Priority to DE102013226565.4A priority patent/DE102013226565A1/en
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Publication of CN104763503A publication Critical patent/CN104763503A/en
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Publication of CN104763503B publication Critical patent/CN104763503B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00Electrical control of exhaust gas treating apparatus
    • F01N9/002Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06Parameters used for exhaust control or diagnosing
    • F01N2900/14Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1406Exhaust gas pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06Parameters used for exhaust control or diagnosing
    • F01N2900/16Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1606Particle filter loading or soot amount
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Abstract

The present invention relates to a kind of methods for monitoring the component (14) in the exhaust passage (12) for being arranged in internal combustion engine (10), it is characterized in that, when exhaust pressure (p_vGPF, p_nGPF) changes, the exhaust pressure (p_vGPF) in the component (14) upstream and the time delay (d) between the exhaust pressure (p_nGPF) in the component (14) downstream are detected, and provides fault-signal (F) when the time delay (d) is too small.

Description

For monitor the method for component in I. C. engine exhaust channel, implement this method device, Computer program and computer program product
Technical field
The present invention relates to a kind of for monitoring the component being arranged in the exhaust passage of the internal combustion engine preferably run with gasoline Method and a kind of apparatus for carrying out this method.
The invention further relates to a kind of computer programs, by the computer program implementing monitoring, and further relate to a kind of meter Calculation machine program product has the program code being stored on machine readable carrier, for implementing this method.
Background technique
Particulate filter in the exhaust passage of internal combustion engine is used to reduce the particle by engine exhaust.In the fortune of internal combustion engine The particulate filter filled in row time course by the particle deposited must be updated from time to time.Legal provisions, it is necessary to by The exact function of diagnostic function monitor particles filter during operation.Such as by determining the row occurred on particulate filter The pressure difference of deflation body, and/or the granule density by least being measured in the downstream of particulate filter by particle sensor are complete The diagnosis of the function of pairs of particulate filter.
It is proposed in 103 58 195 A1 of disclosure DE a kind of for monitoring the exhaust passage that internal combustion engine is arranged in In catalyst converter method, wherein checking low pass behavior, this is determined by the thermal capacity of catalyst converter.Assessment is in catalyst converter upstream The measurement of the first exhaust temperature of detection and the measurement of the second exhaust temperature measured in catalyst converter downstream.This well known side Method makes it possible to monitor the variation that may for example occur in the case where there is the artificial manipulation not being allowed to of catalyst converter.In pole In the case of end, the catalyst converter for needing to monitor can be completely removed.Accordingly it is well known that, by delivery temperature when flowing through catalyst converter The case where being influenced by the thermal capacity of catalyst converter, can derive the artificial manipulation to catalyst converter.
In 10 2,009 003 091A1 of disclosure DE, the sensor being arranged in the exhaust area of internal combustion engine is monitored The existence of unit.Sensor unit obtains sensor temperature first.By the sensor temperature that will acquire and pass through another The delivery temperature or be compared with model parameter or with defined threshold value that sensor unit measures, derive the sensor Unit is disassembled or improperly installs.
In 10 2,010 002 691 A1 of disclosure DE, particulate filter is diagnosed by pressure difference measurement.
A kind of method is described in 44 26 020 A1 of disclosure DE, wherein to monitor the row that internal combustion engine is set The ability to work of catalyst converter in gas area.The temperature that this monitoring is occurred in catalyst converter to be converted due to the heat release of discharge gas It spends based on the assessment promoted.Obtain two temperature signals, wherein the temperature that the first temperature signal passes through measurement catalyst converter downstream Degree obtains, and second temperature signal is obtained by calculating.It assesses temperature and promotes situation, the temperature promotes putting due to exhaust components Thermal response is expected to occur in the catalyst converter as defined in meeting.
A kind of method for monitor particles filter is described in 10 2,010 002 691 A1 of disclosure DE, The particulate filter is arranged in the exhaust passage of internal combustion engine.For monitor particles filter, assess on particulate filter The exhaust pressure difference of appearance.It provides herein, detects the pressure difference occurred relative to atmospheric pressure in particulate filter upstream and in particle mistake The pressure difference that filter downstream occurs.Pressure difference measures acquisition or by the measurement of two absolute pressures by the two differential pressures It obtains.It separately obtains the exhaust pressure that particulate filter upstream and downstream occurs to make it more difficult to artificially to be manipulated, and passes through one A unique differential pressure pickup may simply carry out this artificial manipulation when carrying out pressure difference measurement on particulate filter.
Summary of the invention
The object of the present invention is to provide a kind of simple and reliable method and it is a kind of accordingly for monitor be arranged in it is excellent Select the device of the component in the exhaust area of the internal combustion engine of gasoline operation.
It is according to the present invention for monitor the component being arranged in the exhaust passage of the internal combustion engine preferably with gasoline operation Way is based on following the description: when pressure at expulsion changes, the exhaust pressure of detection means upstream and the exhaust pressure in component downstream Between time delay.Fault-signal is provided when time delay is too small.Fault-signal, which for example can show that, to be come and/or is deposited Storage.
Way according to the present invention is arranged in the exhaust passage of the internal combustion engine run with gasoline particularly suitable for monitoring Component.It is this to be particularly suitable for being based on the following contents: compared with the internal combustion engine for being embodied as diesel engine, to be embodied as gasoline engine The exhaust pressure occurred in the internal combustion engine of machine may be significantly smaller on average.With to absolute signal amplitude, such as pressure signal amplitude Testing and evaluation compare, acquisition to the time delay between two kinds of exhaust pressures and back to back assessment obviously can be simpler Implement single and more accurately.
In artificially manipulation component, such as when dismantling component and replacing the component with section of a pipe, it may appear that mistake Small time delay, the too small time delay are indicated by fault-signal.
Way according to the present invention to be advantageously improved scheme and design scheme respectively be the theme of dependent claims.
A kind of particularly advantageous design scheme regulation, separately measures the discharge pressure signal swum on the members and in institute State the discharge pressure signal in component downstream, and the discharge pressure signal acquisition time retardation separately measured by the two.Make It, can be by least one internal combustion engine operation characteristic parameter, for example load to calculate and swim on the members for alternative solution Exhaust pressure.
Based on to respectively member upstream and component downstream exhaust pressure, appear in absolute figure on component at least The assessment of one measurement is monitored, and this monitoring can only be realized in the case where cost increases and otherwise may Lead to the monitored results for occurring not allowing.It is provided in the way according to advantageous design scheme defined, based on component The exhaust pressure acquisition time retardation swimming out of existing exhaust pressure and occurring in component downstream, this way especially has following excellent Point: so that unrelated to the acquisition of time delay and the absolute figure of exhaust pressure.
Another advantageous design scheme regulation, the change of exhaust pressure is purposefully caused by interfering to the control of internal combustion engine Change.Simultaneously implementing monitoring can be inspired at the time of each prespecified using this measure.Such as the position by interfering air throttle It sets and/or interferes fuel distributing and/or adjust the time of ignition of usually existing ignition installation in gasoline engine to change row Air pressure.
A kind of design scheme regulation of substitution, identifies by the assessment of at least one operation characteristic parameter to internal combustion engine The variation of exhaust pressure, and utilize identified situation of change to detect in the case where control of the not active interference to internal combustion engine Time delay.In this design, in order to be monitored the suitable operating status of internal combustion engine to be waited, in this fortune Occurs the variation of exhaust pressure under row state.The variation for the load that this variation e.g. internal combustion engine requires.The load energy of internal combustion engine Enough positions of air throttle and/or fuel distributing signal acquisition by being arranged in the air inlet area of internal combustion engine.The advantage is that need not lead The operation of dynamic interference internal combustion engine, thus may negatively change exhaust value and fuel consumption.
It is provided according to a kind of design scheme, by between two exhaust pressures or between two exhaust pressure signals at the time of determining Phase shift acquisition time retardation.
Scheme provides according to another design, based on the exhaust pressure occurred in member upstream and the row occurred in component downstream The cross correlation function acquisition time retardation of air pressure.Cross correlation function the result is that value between 0 to 1, which can It is directly used as the measurement of time delay.
Apparatus for carrying out this method according to the present invention is related to a kind of controller specially set up.
The controller preferably comprises at least an electrical storage, wherein being stored with method step in the form of a computer program Suddenly.
As component preferably at least one particulate filter is set in the exhaust passage of internal combustion engine and/or at least one is urged Change device.Fault-signal indicates that (Ausbau) is reconstructed in the disassembly of particulate filter and/or the disassembly of catalyst converter in other words.
Computer program regulation according to the present invention, when the computer program is in the calculating being currently contained in controller When running in machine, the computer program implements all steps of this method.
Computer program product according to the present invention with the program code being stored on machine readable carrier is implemented According to the method for the present invention, if being run in the computer being currently contained in controller if described program.
Detailed description of the invention
The present invention is more fully illustrated by embodiment shown in the figure below.
Fig. 1, which is shown, is able to use technical field of the invention;
Fig. 2 shows two and the discharge pressure signal of time correlation.
Specific embodiment
Fig. 1 shows a kind of internal combustion engine 10, is especially embodied as the internal combustion engine 10 run with gasoline.10 phase of gasoline engine For for example generating significantly lower exhaust pressure with the internal combustion engine 10 that diesel oil is run.It is had recorded in Fig. 1 in 14 upstream of component Exhaust pressure p_vGPF and exhaust pressure p_nGPF in 14 downstream of component.Component 14 be preferably at least one particulate filter and/or At least one catalyst converter.
In 14 upstream arrangement of component first pressure sensor 15, which detects the exhaust in 14 upstream of component P_vGPF is pressed, and is dominated as first exhaust pressure signal p_vGPF_Mess for controller.
In 14 arranged downstream of component second pressure sensor 20, which detects the exhaust in 14 downstream of component P_nGPF is pressed, and is used as second exhaust pressure signal p_nGPF_Mess for controller.
The starting point being based in the shown embodiment is that controller 18 not only controls internal combustion engine 10 and also controls exhaust clearly Clean system.Two different controllers can be set when necessary.
The basis of way according to the present invention is the exhaust pressure p_vGPF detected in 14 upstream of component and detects in component The exhaust pressure p_nGPF in 14 downstreams.It obtains and is assessed between two exhaust pressures p_vGPF, p_nGPF when exhaust pressure changes Time delay.Too small time delay lower than threshold value means to have carried out artificial manipulation to component 14, such as means Component 14 is dismantled.
When under the operating status that internal combustion engine 10 is in static, exhaust pressure p_vGPF, p_nGPF are constant or only slightly change, Component 14 could only may be monitored in the case where increasing cost at this time, wherein must comment signal amplitude Estimate.And according to the present invention, at least significantly arriving in the variation that exhaust pressure p_vGPF, p_nGPF occur can using simple tool Detect that the exhaust pressure p_vGPF occurred in 14 upstream of component and the time of the exhaust pressure p_nGPF in the appearance of 14 downstream of component prolong Late when amount, it is monitored.When artificially being manipulated to component 14, such as disassembly is being carried out to component 14 and is being replaced with section of a pipe When changing component 14, there is too small time delay, the too small time delay is shown by fault-signal F.
In principle it is possible that calculating the row in 14 upstream of component by least one internal combustion engine operation characteristic parameter 24 Air pressure.The load of internal combustion engine 10 can be for example utilized thus.Measurement as load is able to use the not detailed air throttle shown Position and/or fuel distributing signal.As an alternative or as additional project, it is provided with first pressure sensor 16, The pressure sensor detects the exhaust pressure p_vGPF in 14 upstream of component.What is certainly existed is second pressure sensor 20, the pressure Force snesor detects the exhaust pressure p_nGPF in 14 downstream of component.If being provided with two pressure sensors 16,20, just divide completely Detect exhaust pressure p_vGPF, p_nGPF in 14 upstream of component or downstream with opening.It possibly can not be detected by differential pressure pickup The exhaust pressure difference occurred on component 14 utilizes this because this will see the time relationship between two exhaust pressures p_vGPF, p_nGPF Class differential pressure pickup can not measure this time relationship in the case where no other measures.
It is provided with a kind of operation characteristic parameter in controller 18 and determines system 22, and determines at least one internal combustion engine operation Characteristic parameter 24.The previously given position for the air throttle that internal combustion engine operation characteristic parameter 24 had e.g. mentioned and/or The fuel distributing signal mentioned, and/or in the internal combustion engine 10 for the external source igniting that should be preferably provided be to be not shown in Fig. 1 Ignition installation and the time of ignition signal that is arranged.
When the characteristic parameter assessment system 26 for assessing internal combustion engine operation characteristic parameter 24 described at least one of which When detecting sufficiently large variation and being showed by identification signal FG, it is assumed that exhaust pressure p_vGPF, p_nGPF exist Sufficiently large variation.
Identification signal FG promotes flow evaluation system 28 to obtain the exhaust pressure p_vGPF occurred in 14 upstream of component and in structure The time delay between exhaust pressure p_nGPF that 14 downstream of part occurs.Therefore, it is inputted respectively to flow evaluation system 28 in structure The exhaust pressure p_vGPF of part upstream or as the exhaust pressure p_vGPF of calculating or as the discharge pressure signal p_ measured VGPF_Mess, and input the measured discharge pressure signal p_nGPF_Mess in the pressure in 14 downstream of component.
Two exhaust pressure p_vGPF, p_nGPF related with time t is shown in FIG. 2.The two exhaust pressures p_vGPF, P_nGPF is first in terms of amplitude since pressure that is expected, occurring on component 14 decline is had any different.As has been mentioned Like that, especially in the internal combustion engine 10 run with gasoline, expected pressure decline is smaller on component 14, so that must increase Cost could assess the amplitude of two exhaust pressures p_vGPF, p_nGPF.Therefore it provides, assesses two exhaust pressures p_vGPF, p_ Time delay between nGPF.
It is provided according to the design scheme of way according to the present invention, by interfering the control of internal combustion engine 10 purposefully to cause The variation of exhaust pressure p_vGPF, vs_nGPF.This interference is by changing the already described internal combustion engine operation feature ginseng of at least one of which The variation of amount 24 is realized.Characteristic parameter assessment system 26 can be saved when realizing this design scheme, because in such case Under, operation characteristic parameter determines that system 22 oneself is just capable of providing identification signal FG.It can be any preparatory using this measure It is inspired at the time of given and implements the monitoring to component 14.
It is provided, is waited always until exhaust pressure p_vGPF, p_nGPF change according to a kind of design scheme of substitution, and The control to internal combustion engine 10 purposefully need not be interfered just to be monitored to component 14.Can be avoided whereby may go out The increase for the harmful components being likely to occur in existing unnecessary fuel consumption and exhaust.When realizing this design scheme, need Characteristic parameter assessment system 26 is wanted to observe and determine that at least one internal combustion engine operation that system 22 provides is special by operation characteristic parameter Levy parameter 24.
Flow evaluation system 28 can directly acquire the time delay d between two exhaust pressures p_vGPF, p_nGPF.Institute Time delay d is stated to a certain extent directly by two exhaust pressures p_vGPF, p_nGPF of T appearance at the time of previously given Phase shift in obtain.
A kind of preferred design scheme regulation of substitution, flow evaluation system 28 obtain two exhaust pressures p_vGPF, p_ Cross correlation function between nGPF, wherein in addition to the phase shift between two exhaust pressures p_vGPF, p_nGPF, extraly also The amplitude of two exhaust pressures p_vGPF, p_nGPF participate in the result in the calculating of cross correlation function.Cross correlation function The result is that the number in 0 to 1 numberical range, wherein lesser number is equivalent to biggish time delay d, and biggish number Volume is equivalent to small time delay d.
The output signal 32 provided by flow evaluation system 28 is compared by comparator 30 with threshold value.As long as time delay It measures d and is lower than previously given threshold value, that is to say there are too small time delay d, be provided with fault-signal F, which can It is revealed and/or is stored in the not detailed memory shown in controller 18.
It indicates that the too small fault-signal F of time delay d means to have carried out artificial manipulation to component 14, such as means Component 14 is entirely removed and connected pipe replaces.Therefore, when there is this fault-signal F, it is necessary to check that exhaust is logical Road 12 can continue to assure compliance with regulation.

Claims (12)

1. the method for monitoring the component (14) being arranged in the exhaust passage (12) of internal combustion engine (10), which is characterized in that When exhaust pressure (p_vGPF, p_nGPF) changes, detect in the exhaust pressure (p_vGPF) of the component (14) upstream and in institute The time delay (d) between the exhaust pressure (p_nGPF) in component (14) downstream is stated, and is mentioned when time delay (d) is too small For fault-signal (F).
2. according to the method for claim 1, which is characterized in that separately exhaust pressure of the measurement in the component (14) upstream (p_vGPF) there are also the exhaust pressures (p_nGPF) in the component (14) downstream.
3. according to the method for claim 1, which is characterized in that counted by least one internal combustion engine operation characteristic parameter (24) The exhaust pressure (p_vGPF) in the component (14) upstream is calculated, and measures the exhaust pressure (p_ in the component (14) downstream NGPF).
4. according to the method for claim 1, which is characterized in that by interfering the control to the internal combustion engine (10) by interior Combustion engine operation characteristic parameter (24) purposefully causes the variation of the exhaust pressure (p_vGPF, p_nGPF).
5. according to the method for claim 1, which is characterized in that by least one internal combustion engine operation characteristic parameter (24) Assessment identify the variation of the exhaust pressure (p_vGPF, p_nGPF), and in not active interference to the internal combustion engine (10) The time delay (d) is obtained in the case where control after the variation for identifying the exhaust pressure (p_vGPF, p_nGPF).
6. according to the method for claim 1, which is characterized in that the time delay (d) is used as described two exhaust pressures Phase shift between (p_vGPF, p_nGPF) is acquired.
7. according to the method for claim 1, which is characterized in that the time delay (d) is by described two exhaust pressure (p_ VGPF, p_nGPF) cross-correlation function result obtain.
8. according to the method for claim 1, which is characterized in that the fault-signal (F) indicates that the component (14) is split It unloads.
9. the device for monitoring the component (14) being arranged in the exhaust passage (12) of the internal combustion engine (10), feature exist In the controller (18) specially set up is arranged for carrying out according to method of any of claims 1-8.
10. device according to claim 9, which is characterized in that be provided in the component (14) upstream for detecting The first pressure sensor (16) of the exhaust pressure of component (14) upstream, and be provided with and be used in the component (14) downstream The second pressure sensor (20) in the exhaust pressure in the component (14) downstream is detected, and is arranged based on pressure measured by two Force signal (p_vGPF_Mess, p_nGPF_Mess) obtains the time delay (d).
11. device according to claim 9, which is characterized in that be arranged extremely in exhaust passage (12) as component (14) A few particulate filter and/or at least one catalyst converter.
12. controller has the program code being stored on machine readable carrier, for when said program code is in the control Implement when being executed in the computer of device processed according to method of any of claims 1-8.
CN201410858493.2A 2013-12-19 2014-12-19 For monitoring the method for component in I. C. engine exhaust channel, the device for implementing this method, computer program and computer program product CN104763503B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102013226565.4 2013-12-19
DE102013226565.4A DE102013226565A1 (en) 2013-12-19 2013-12-19 Method for monitoring a component arranged in an exhaust duct of an internal combustion engine, apparatus for carrying out the method, computer program and computer program product

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CN104763503B true CN104763503B (en) 2019-02-26

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DE102017223162B4 (en) * 2017-12-19 2021-02-18 Vitesco Technologies GmbH Method and device for diagnosing a particulate filter arranged in the exhaust tract of a gasoline engine operated with direct fuel injection
CN108414141B (en) * 2018-02-12 2020-03-17 中国第一汽车股份有限公司 Method for diagnosing diesel engine DPF differential pressure sensor fault

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DE4426020B4 (en) 1994-07-22 2005-07-28 Robert Bosch Gmbh Method and device for monitoring the functionality of a catalyst in the exhaust passage of an internal combustion engine
DE10358195A1 (en) 2003-12-12 2005-07-14 Robert Bosch Gmbh Method for monitoring a arranged in an exhaust region of an internal combustion engine component
DE102004040924B4 (en) * 2004-08-24 2019-04-11 Robert Bosch Gmbh Method and device for monitoring pressure sensors in the exhaust gas system
DE102009003091A1 (en) 2009-05-14 2010-11-18 Robert Bosch Gmbh Method and device for monitoring a arranged in an exhaust region of an internal combustion engine component
DE102010002691A1 (en) 2010-03-09 2011-09-15 Robert Bosch Gmbh Method and device for diagnosing a particulate filter
US8656700B2 (en) * 2010-10-22 2014-02-25 Toyota Jidosha Kabushiki Kaisha Filter failure detection apparatus of an internal combustion engine
US8398742B2 (en) * 2011-05-19 2013-03-19 GM Global Technology Operations LLC Pressure sensor disconnection detection systems and methods
US20140223998A1 (en) * 2011-07-06 2014-08-14 Ibiden Co., Ltd. Particulate collection filter state detection device
US9068492B2 (en) * 2011-11-04 2015-06-30 Ford Global Technologies, Llc Motor vehicle on-board diagnostics to distinguish degradation from tampering

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