CN106121795A - The detection method of diesel engine DPF carbon cumulant - Google Patents

The detection method of diesel engine DPF carbon cumulant Download PDF

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Publication number
CN106121795A
CN106121795A CN201610614204.3A CN201610614204A CN106121795A CN 106121795 A CN106121795 A CN 106121795A CN 201610614204 A CN201610614204 A CN 201610614204A CN 106121795 A CN106121795 A CN 106121795A
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dpf
pressure reduction
standard
unloaded
carbon
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CN106121795B (en
Inventor
程剑峰
代永刚
王晓鹏
张焕岩
夏良志
黄伟
李�杰
刘芯娟
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1606—Particle filter loading or soot amount
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The invention discloses the detection method of a kind of diesel engine DPF carbon cumulant, wherein, brand-new DPF is carried out unloaded parameter calibration record；According to unloaded parameter determination Light Condition equation, and obtain unloaded pressure reduction by Light Condition equation；Operating mode pressure reduction before and after making electromotor run to gather DPF under driving cycle；According to unloaded pressure reduction and operating mode pressure reduction, calculate the net-head after removing unloaded pressure reduction；The standard pressure reduction under standard state is calculated according to net-head；In engine operation process, measure the carbon cumulant in DPF；The standard differential pressure calibration curve of standard pressure reduction and carbon cumulant is determined according to standard pressure reduction and carbon cumulant；Under each operating mode of electromotor, DPF to be measured is monitored, obtains the standard pressure reduction of DPF to be measured, the standard pressure reduction of DPF to be measured is compared with standard differential pressure calibration curve, obtain the carbon cumulant of DPF to be measured.The detection method of the diesel engine DPF carbon cumulant that the present invention provides, solves existing diesel dpf regeneration moment inaccurate problem.

Description

The detection method of diesel engine DPF carbon cumulant
Technical field
The present invention relates to Diesel particulate filtration field, particularly relate to the detection method of a kind of diesel engine DPF carbon cumulant.
Background technology
Diesel engine discharges because of good economy, dynamic property, reliability and relatively low CO, HC, is widely used in traffic The fields such as transport, engineering machinery.But the Particulate Emission of diesel engine never obtains optimum control, in order to reduce environmental pollution and Protection human body is healthy, has the most all formulated the strictest discharge standard.
At present, exhaust aftertreatment devices has become as diesel vehicle and joins for a kind of standard solving carbon particulate emission problem Put, use diesel particulate filter (DPF) to carry out process and be acknowledged as a kind of very effective method.The operation principle of DPF: The pollutant containing a large amount of soot particles of diesel emission enter DPF by discharge duct, and it is internal is alveolate texture, and two End, while be unlimited, is the conduit wall blocked, and waste gas, from the entrance of unlimited one end, passes through the honeycomb wall of porous, then from Adjacent passage is discharged.Majority of particles is excessive and cannot pass through cinclides due to volume, thus is attracted on conduit wall not Can be discharged in air.Along with the accumulation of the granule filtered down, filtering holes gradually blocks, and makes exhaust resistance increase, and causes sending out Motivation dynamic property and economy deteriorate, it is therefore necessary to removing the granule in DPF in time, referred to as dpf regeneration, i.e. on suitable opportunity In DPF, the carbon particulate of accumulation is burnt by oil spout.
The method calculating carbon particulate quality in existing diesel engine DPF system is based primarily upon pressure reduction, exhaust gas volume before and after DPF Flow, then forms the quality of MAP estimation carbon particulate by substantial amounts of test data.But, this kind of detection method needs Obtain on the basis of substantial amounts of test data, its accuracy it is difficult to ensure that, and before and after DPF, pressure reduction exists bigger under some operating mode Error, directly affect the dpf regeneration moment；Additionally, existing detection method is the most coarse, the part that can only cover diesel engine travels Operating mode.
Summary of the invention
It is an object of the invention to provide the detection method of a kind of diesel engine DPF carbon cumulant, to solve existing diesel DPF Regeneration moment inaccurate problem, and then improve the working life of DPF system.
The invention provides the detection method of a kind of diesel engine DPF carbon cumulant, wherein, comprise the steps:
Step S1, to unassembled use and meet product design required standard DPF and carry out unloaded parameter calibration record, Described unloaded parameter includes pressure reduction before and after extraction flow, DPF, inlet temperature and inlet pressure；
Step S2, according to demarcating the described unloaded parameter determination obtained for calculating the Light Condition equation of unloaded pressure reduction, And obtain unloaded pressure reduction by Light Condition Equation for Calculating；
Step S3, make electromotor run under driving cycle so that the cumulative amount of carbon persistently increases in described standard DPF, adopt Collect the operating mode pressure reduction before and after described standard DPF under this state；
Step S4, according to described unloaded pressure reduction and described operating mode pressure reduction, calculate the net-head after removing described unloaded pressure reduction；
Step S5, calculate the standard pressure reduction under standard state according to described net-head；
In step S6, the electromotor running when the operating point that soot particulate matter discharge capacity is maximum, measure described standard Carbon cumulant in DPF；
Step S7, determine the standard pressure reduction of standard pressure reduction and carbon cumulant according to described standard pressure reduction and described carbon cumulant Calibration curve；
Step S8, under each operating mode of electromotor, DPF to be measured is monitored, obtains the standard pressure reduction of described DPF to be measured, will The standard pressure reduction of described DPF to be measured is compared with described standard differential pressure calibration curve, obtains the carbon accumulation of described DPF to be measured Amount.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, the institute to described standard DPF Before and after stating DPF, pressure reduction is demarcated, and specifically includes:
Pressure reduction before and after described DPF is obtained by being arranged on the differential pressure pickup at the entrance and exit of described standard DPF.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, parameter mark under Light Condition Fixed frequency is 2Hz, and the nominal time is 1800s.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, the institute obtained according to demarcation State unloaded parameter determination to specifically include for the Light Condition equation calculating unloaded pressure reduction:
Step S21, according to The Ideal-Gas Equation and described extraction flow, described inlet temperature and described entrance pressure Power obtains exhaust volume；
Step S22, obtaining unloaded pressure differential factor according to pressure reduction normalized form and described exhaust volume, described pressure reduction standard is public Formula is as follows:
Δ P '=a1×μ×Q+a2×ρ×Q2
Wherein, a1And a2For unloaded pressure differential factor, Δ P ' is pressure reduction before and after DPF, and μ is aerofluxus viscosity, and ρ is exhaust gas density, Q For exhaust volume；
Step S23, obtain Light Condition equation according to described unloaded pressure differential factor, and obtained by Light Condition Equation for Calculating To unloaded pressure reduction；Described Light Condition equation is as follows:
Δ P=a1×μ×Q+a2×ρ×Q2
Wherein, Δ P is unloaded pressure reduction.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, according to described net-head meter The standard pressure reduction calculated under standard state specifically includes:
ΔPindex=0.0018 × Δ Psoot/ (μ × Q)
Wherein, Δ PsootFor net-head, Δ PindexFor standard pressure reduction.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, measure in described standard DPF Carbon cumulant specifically include:
Weigh the weight before and after described standard DPF tires out carbon, and do the carbon accumulation that mathematic interpolation obtains in described standard DPF Amount.
The detection method of diesel engine DPF carbon cumulant as above, these, it is preferred to, weigh described standard DPF and tire out Weight before and after carbon specifically includes:
Weight before and after frequency lower-weighing standard DPF set tires out carbon.
The detection method of the diesel engine DPF carbon cumulant that the present invention provides, solves the existing diesel dpf regeneration moment not Problem accurately, improves the working life of DPF system.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
The flow chart of the detection method of the diesel engine DPF carbon cumulant that Fig. 1 provides for the embodiment of the present invention；
The standard differential pressure calibration curve of two kinds of different Diesel Series that Fig. 2 provides for the embodiment of the present invention.
Description of reference numerals:
The standard differential pressure calibration curve of the standard differential pressure calibration curve 2-second series DPF of 1-First Series DPF
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The flow chart of the detection method of the diesel engine DPF carbon cumulant that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, Embodiments provide the detection method of a kind of diesel engine DPF carbon cumulant, wherein, comprise the steps:
Step S1, to unassembled use and meet product design required standard DPF and carry out unloaded parameter calibration record, Described unloaded parameter includes pressure reduction before and after extraction flow, DPF, inlet temperature and inlet pressure.
Specifically, unassembled use and meet product design required standard DPF and can use brand-new DPF.
Wherein, pressure reduction before and after the DPF of standard DPF is demarcated specifically may include that by being arranged on entering of standard DPF The differential pressure pickup in mouth and exit obtains pressure reduction before and after DPF.
This step can be divided into following step to carry out:
Step S11, differential pressure pickup is set at the entrance and exit of standard DPF；
Step S12, electromotor is made to run under zero load；
Step S13, obtain pressure reduction before and after DPF by the data reading differential pressure pickup record.
Step S2, according to demarcating the described unloaded parameter determination obtained for calculating the Light Condition equation of unloaded pressure reduction, And obtain unloaded pressure reduction by Light Condition Equation for Calculating.
Specifically, under Light Condition, the frequency of parameter calibration is 2Hz, and the nominal time is 1800s, can by frequency and time It is 3600 times to obtain the total degree demarcated under Light Condition, 3600 groups of data can be obtained, to ensure enough data simultaneously Support.
Specifically, the unloaded parameter determination obtained according to demarcation can be concrete for the Light Condition equation calculating unloaded pressure reduction Including:
Step S21, obtain aerofluxus body according to The Ideal-Gas Equation and extraction flow, inlet temperature with inlet pressure Long-pending；
Wherein, The Ideal-Gas Equation employing The Ideal-Gas Equation of the prior art:
PQ=nRT
Wherein, p is the pressure of ideal gas, and Q is exhaust volume, and n is the amount of gaseous matter, and R is ideal gas constant, T For inlet temperature.
Step S22, obtain unloaded pressure differential factor, wherein, pressure reduction normalized form according to pressure reduction normalized form and exhaust volume As follows:
Δ P '=a1×μ×Q+a2×ρ×Q2
Wherein, a1And a2For unloaded pressure differential factor, Δ P ' is pressure reduction before and after DPF, and μ is aerofluxus viscosity, and ρ is exhaust gas density, Q For exhaust volume.
Obtain unloaded pressure differential factor according to pressure reduction normalized form and exhaust volume specifically to may include that
Step S221, according to the exhaust volume calculated in standard pressure reduction formula and step S21 and aerofluxus viscosity, row Pressure reduction before and after the DPF of record in air tightness and step S1, the anti-numerical value releasing 3600 groups of zero load pressure differential factor；
Step S222, the essence of unloaded pressure differential factor that the numerical value of 3600 groups of zero load pressure differential factor is obtained by method of least square Really value.
Step S23, obtain Light Condition equation according to unloaded pressure differential factor, and obtain sky by Light Condition Equation for Calculating Carry pressure reduction；Wherein, Light Condition equation is as follows:
Δ P=a1×μ×Q+a2×ρ×Q2
Wherein, Δ P is unloaded pressure reduction.
Step S3, making electromotor run so that the cumulative amount of carbon persistently increases in standard DPF under driving cycle, gathering should Operating mode pressure reduction before and after standard DPF under state.
Specifically, gather under electromotor driving cycle the operating mode pressure reduction before and after standard DPF to specifically include:
Step S31, differential pressure pickup is set at the entrance and exit of standard DPF；
Step S32, electromotor is made to run under driving cycle；
Step S33, obtain the operating mode pressure reduction before and after DPF by the data reading differential pressure pickup record.
Step S4, according to unloaded pressure reduction and operating mode pressure reduction, calculate the net-head after removing described unloaded pressure reduction.
Step S5, calculate the standard pressure reduction under standard state according to net-head.
Specifically, the standard pressure reduction calculated under standard state according to net-head may particularly include:
ΔPindex=0.0018 × Δ Psoot/(μ×Q)
Wherein, Δ PsootFor net-head, Δ PindexFor standard pressure reduction.
In step S6, the electromotor running when the operating point that soot particulate matter discharge capacity is maximum, in measurement standard DPF Carbon cumulant.
Specifically, the carbon cumulant in measurement standard DPF specifically may include that
Weighing standard DPF tires out the weight before and after carbon, and does the carbon cumulant in mathematic interpolation acquisition standard DPF.
Specifically, the weight that standard DPF that weighs is tired out before and after carbon specifically may include that
Weight before and after frequency lower-weighing standard DPF set tires out carbon.
Step S7, determine the standard pressure reduction of standard pressure reduction and carbon cumulant according to described standard pressure reduction and described carbon cumulant Calibration curve.
Specifically, it is determined that the standard differential pressure calibration curve of standard pressure reduction and carbon cumulant specifically may include that
Step S71, setting up abscissa and vertical coordinate, wherein abscissa represents standard pressure reduction, and vertical coordinate represents carbon cumulant.
Specifically, set up abscissa and vertical coordinate specifically may include that
Step S711, by vertical coordinate carbon accumulation quality point be respectively set as 5g, 10g, 15g, 20g, 25g, 30g, with Guarantee standard differential pressure calibration curve is the most accurate.
The standard differential pressure calibration curve of two kinds of different Diesel Series that Fig. 2 provides for the embodiment of the present invention, such as Fig. 2 institute Show:
Step S72, the standard pressure reduction obtained according to detection and the carbon cumulant obtained of weighing, set up one in coordinate system The standard differential pressure calibration curve of standard pressure reduction and carbon cumulant.
Specifically, the standard differential pressure calibration curve setting up a kind of standard pressure reduction and carbon cumulant in coordinate specifically can wrap Include:
Step S721, the DPF using different molding are defined as different series, by the standard pressure reduction mark of First Series DPF Determine curve 1 to set up in coordinate system；
Step S722, in the standard differential pressure calibration curve 1 place coordinate system of First Series DPF, set up second series DPF Standard differential pressure calibration curve 2.
It should be noted that the DPF standard differential pressure calibration curve of multiple different series can be set up at the same coordinate system In, in order to realize monitoring and the comparison of multiple DPF carbon cumulant.
Step S8, under each operating mode of electromotor, DPF to be measured is monitored, obtains the standard pressure reduction of DPF to be measured, by be measured The standard pressure reduction of DPF is compared with standard differential pressure calibration curve, obtains the carbon cumulant of DPF to be measured.
Specifically, being monitored DPF to be measured under each operating mode of electromotor, the standard pressure reduction obtaining DPF to be measured specifically may be used To include:
Step S81, determine the unloaded pressure reduction of DPF to be measured according to Light Condition equation；
Step S82, obtained the operating mode pressure reduction of DPF to be measured by differential pressure pickup；
Step S83, according to the operating mode pressure reduction of DPF to be measured and unloaded pressure reduction, obtain and remove the clean of DPF to be measured after unloaded pressure reduction Pressure reduction；
Step S84, obtain the standard pressure reduction of DPF to be measured according to the net-head of DPF to be measured.
The detection method of the diesel engine DPF carbon cumulant that the embodiment of the present invention provides, solves existing diesel dpf regeneration Moment inaccurate problem, improves the working life of DPF system.
The structure of the present invention, feature and action effect, above institute are described in detail above according to graphic shown embodiment State only presently preferred embodiments of the present invention, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing Want made change, or be revised as the Equivalent embodiments of equivalent variations, still without departing from description and diagram contained spiritual time, All should be within the scope of the present invention.

Claims (7)

1. the detection method of a diesel engine DPF carbon cumulant, it is characterised in that comprise the steps:
Step S1, to unassembled use and meet product design required standard DPF and carry out unloaded parameter calibration record, described Unloaded parameter includes pressure reduction before and after extraction flow, DPF, inlet temperature and inlet pressure；
Step S2, according to demarcating the described unloaded parameter determination obtained for calculating the Light Condition equation of unloaded pressure reduction, and lead to Cross Light Condition Equation for Calculating and obtain unloaded pressure reduction；
Step S3, making electromotor run so that the cumulative amount of carbon persistently increases in described standard DPF under driving cycle, gathering should Operating mode pressure reduction before and after described standard DPF under state；
Step S4, according to described unloaded pressure reduction and described operating mode pressure reduction, calculate the net-head after removing described unloaded pressure reduction；
Step S5, calculate the standard pressure reduction under standard state according to described net-head；
In step S6, the electromotor running when the operating point that soot particulate matter discharge capacity is maximum, measure in described standard DPF Carbon cumulant；
Step S7, determine the standard differential pressure calibration of standard pressure reduction and carbon cumulant according to described standard pressure reduction and described carbon cumulant Curve；
Step S8, under each operating mode of electromotor, DPF to be measured is monitored, obtains the standard pressure reduction of described DPF to be measured, by described The standard pressure reduction of DPF to be measured is compared with described standard differential pressure calibration curve, obtains the carbon cumulant of described DPF to be measured.
The detection method of diesel engine DPF carbon cumulant the most according to claim 1, it is characterised in that to described standard DPF Described DPF before and after pressure reduction demarcate, specifically include:
Pressure reduction before and after described DPF is obtained by being arranged on the differential pressure pickup at the entrance and exit of described standard DPF.
The detection method of diesel engine DPF carbon cumulant the most according to claim 1, it is characterised in that join under Light Condition The frequency that number is demarcated is 2Hz, and the nominal time is 1800s.
The detection method of diesel engine DPF carbon cumulant the most according to claim 1, it is characterised in that obtain according to demarcation Described unloaded parameter determination specifically include for the Light Condition equation calculating unloaded pressure reduction:
Step S21, obtain with described inlet pressure according to The Ideal-Gas Equation and described extraction flow, described inlet temperature Take exhaust volume；
Step S22, obtaining unloaded pressure differential factor according to pressure reduction normalized form and described exhaust volume, described pressure reduction normalized form is such as Under:
Δ P '=a1×μ×Q+a2×ρ×Q2
Wherein, a1And a2For unloaded pressure differential factor, Δ P ' is pressure reduction before and after DPF, and μ is aerofluxus viscosity, and ρ is exhaust gas density, and Q is row Air volume；
Step S23, obtain Light Condition equation according to described unloaded pressure differential factor, and obtain sky by Light Condition Equation for Calculating Carry pressure reduction；Described Light Condition equation is as follows:
Δ P=a1×μ×Q+a2×ρ×Q2
Wherein, Δ P is unloaded pressure reduction.
The detection method of diesel engine DPF carbon cumulant the most according to claim 4, it is characterised in that according to described fine pressure The standard pressure reduction that difference calculates under standard state specifically includes:
ΔPindex=0.0018 × Δ Psoot/ (μ × Q)
Wherein, Δ PsootFor net-head, Δ PindexFor standard pressure reduction.
The detection method of diesel engine DPF carbon cumulant the most according to claim 1, it is characterised in that measure described standard Carbon cumulant in DPF specifically includes:
Weigh the weight before and after described standard DPF tires out carbon, and do the carbon cumulant in mathematic interpolation described standard DPF of acquisition.
The detection method of diesel engine DPF carbon cumulant the most according to claim 6, it is characterised in that weigh described standard The weight that DPF tires out before and after carbon specifically includes:
Weight before and after frequency lower-weighing standard DPF set tires out carbon.
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CN109100154A (en) * 2018-07-05 2018-12-28 无锡威孚环保催化剂有限公司 A kind of quick ash content collecting apparatus of gasoline engine grain catcher and its application method
CN109404107A (en) * 2018-09-17 2019-03-01 广东工业大学 Diesel particulate trap carbon carrying capacity evaluation method
CN111796582A (en) * 2020-07-16 2020-10-20 江铃汽车股份有限公司 Remote monitoring and optimizing method for GPF removal diagnosis of gasoline motor car
CN111852630A (en) * 2020-08-24 2020-10-30 安徽江淮汽车集团股份有限公司 Carbon loading capacity detection method, equipment, storage medium and device
CN112431658A (en) * 2020-11-22 2021-03-02 同济大学 DPF carbon loading capacity measuring device and method
CN113310705A (en) * 2021-05-11 2021-08-27 广西玉柴机器股份有限公司 Forklift carbon accumulation testing method
CN113340605A (en) * 2021-04-29 2021-09-03 广西玉柴机器股份有限公司 Tractor whole vehicle carbon accumulation test method and system
CN113356987A (en) * 2021-06-18 2021-09-07 广西玉柴机器股份有限公司 DPF (diesel particulate filter) trapping efficiency low diagnosis method based on DPF equivalent pressure difference
CN114486272A (en) * 2021-12-24 2022-05-13 广西玉柴机器股份有限公司 Carbon accumulation test method for whole loader

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CN107956543A (en) * 2017-11-28 2018-04-24 东风商用车有限公司 A kind of diesel particulate trap fault detection system and its detection method
CN107956543B (en) * 2017-11-28 2024-03-19 东风商用车有限公司 Diesel engine particle catcher fault detection system and detection method thereof
CN109100154A (en) * 2018-07-05 2018-12-28 无锡威孚环保催化剂有限公司 A kind of quick ash content collecting apparatus of gasoline engine grain catcher and its application method
CN109404107A (en) * 2018-09-17 2019-03-01 广东工业大学 Diesel particulate trap carbon carrying capacity evaluation method
CN111796582B (en) * 2020-07-16 2022-02-08 江铃汽车股份有限公司 Remote monitoring and optimizing method for GPF removal diagnosis of gasoline motor car
CN111796582A (en) * 2020-07-16 2020-10-20 江铃汽车股份有限公司 Remote monitoring and optimizing method for GPF removal diagnosis of gasoline motor car
CN111852630A (en) * 2020-08-24 2020-10-30 安徽江淮汽车集团股份有限公司 Carbon loading capacity detection method, equipment, storage medium and device
CN112431658A (en) * 2020-11-22 2021-03-02 同济大学 DPF carbon loading capacity measuring device and method
CN112431658B (en) * 2020-11-22 2022-06-07 同济大学 DPF carbon loading capacity measuring device and method
CN113340605A (en) * 2021-04-29 2021-09-03 广西玉柴机器股份有限公司 Tractor whole vehicle carbon accumulation test method and system
CN113310705A (en) * 2021-05-11 2021-08-27 广西玉柴机器股份有限公司 Forklift carbon accumulation testing method
CN113356987A (en) * 2021-06-18 2021-09-07 广西玉柴机器股份有限公司 DPF (diesel particulate filter) trapping efficiency low diagnosis method based on DPF equivalent pressure difference
CN114486272A (en) * 2021-12-24 2022-05-13 广西玉柴机器股份有限公司 Carbon accumulation test method for whole loader
CN114486272B (en) * 2021-12-24 2023-09-15 广西玉柴机器股份有限公司 Whole vehicle carbon accumulation test method of loader

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