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CN111502805B - Control method and control device for active regeneration of vehicle DPF - Google Patents

Control method and control device for active regeneration of vehicle DPF Download PDF

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Publication number
CN111502805B
CN111502805B CN202010225210.6A CN202010225210A CN111502805B CN 111502805 B CN111502805 B CN 111502805B CN 202010225210 A CN202010225210 A CN 202010225210A CN 111502805 B CN111502805 B CN 111502805B
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vehicle
value
time value
dpf
accumulated
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CN111502805A (en
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姬忠锐
张军
张成国
赵建永
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration
    • 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
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • 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
    • F01N2900/10—Parameters used for exhaust control or diagnosing said parameters being related to the vehicle or its components
    • F01N2900/102—Travelling distance
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

本发明属于车辆技术领域，具体涉及一种车辆DPF主动再生的控制方法及控制装置。本发明的车辆DPF主动再生的控制方法包括如下步骤：获取发动机累计运行时间值、车辆累计行驶里程值和车载SCR的排气温度值；根据发动机累计运行时间值大于等于第一预设时间值或根据车辆累计行驶里程值大于等于第一预设里程值和车载SCR的排气温度值大于等于第一预设温度值的累计时间值小于第二预设时间值控制DPF自动主动再生。根据本发明的车辆DPF主动再生的控制方法中，使新车自动触发DPF再生，以提高排温从而烧掉后处理杂质或生产过程材料的策略，从而保证新车的后处理活性，提升排放等级。

Figure 202010225210

The invention belongs to the technical field of vehicles, and in particular relates to a control method and a control device for active regeneration of a DPF of a vehicle. The control method for the active regeneration of the vehicle DPF of the present invention includes the following steps: obtaining the accumulated running time value of the engine, the accumulated mileage value of the vehicle and the exhaust gas temperature value of the vehicle SCR; DPF automatic active regeneration is controlled according to the cumulative time value of the vehicle's accumulated mileage value being greater than or equal to the first preset mileage value and the exhaust gas temperature value of the on-board SCR being greater than or equal to the first preset temperature value and less than the second preset time value. According to the control method of vehicle DPF active regeneration of the present invention, the new car automatically triggers DPF regeneration to increase the exhaust temperature to burn off post-processing impurities or materials in the production process, thereby ensuring the post-processing activity of the new car and improving the emission level.

Figure 202010225210

Description

Control method and control device for active regeneration of DPF of vehicle
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a control method and a control device for active regeneration of a DPF of a vehicle.
Background
The DPF (English name: Diesel Particulate Filter, Chinese name: particle catcher) filters the particles in the tail gas by the principle of physical filtration, and the pore channels of the DPF carrier are blocked at the alternate ends, so that the particles are forced to pass through the porous wall surface and are diffused and attached to the walls of the pores, thereby forming filtration; the DPF is actively regenerated by injecting fuel oil into the exhaust pipe through an oil injector or other modes, and the fuel oil is oxidized in the DOC to release heat, so that the exhaust temperature is improved, and the exhaust temperature is controlled to be stabilized at a proper temperature (for example, 600 ℃). The process of the cumulative carbon (source and exhaust emissions) in the DPF reacting with oxygen to become gaseous CO2 at high temperature.
Under the pressure of emission legislation, on the one hand, diesel engines for vehicles are constantly being technically upgraded and improved, and on the other hand, appropriate aftertreatment technical strategies and equipment are selected, for example, Selective Catalytic Reduction (SCR), DPF, DOC, etc., purification of exhaust emissions of vehicles, and aftertreatment systems (DOC, DPF, SCR, three-way catalyst, etc.) cannot be opened, but the aftertreatment systems of new vehicles inevitably mix part of impurities or production process materials in the production process (such as catalyst smearing, etc.), which has some influence on the activity of aftertreatment.
The existing strategy is realized by triggering a DPF regeneration function based on a manual switch (driver operation) or carbon loading capacity (carbon accumulation amount in DPF), periodic mileage and periodic operation time, and the problem that the emission level cannot be improved due to the fact that the aftertreatment activity of a new vehicle needs high-temperature activation, namely, part of impurities or production process materials are mixed in an aftertreatment system, and the aftertreatment activity is influenced by the aftertreatment system is solved.
Disclosure of Invention
The invention aims to at least solve the problem that the existing strategy can not avoid the influence of the mixing of part of impurities or production process materials in the post-treatment system of a new vehicle on the activity of the post-treatment. The purpose is realized by the following technical scheme:
a first aspect of the invention proposes a method for controlling the active regeneration of a DPF of a vehicle, wherein said method comprises the steps of:
acquiring an accumulated running time value of an engine, an accumulated driving mileage value of a vehicle and an exhaust temperature value of a vehicle-mounted SCR;
controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is greater than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to a first preset temperature value and is less than a second preset time value; or
And controlling the DPF to automatically and actively regenerate according to the condition that the accumulated driving mileage value of the vehicle is greater than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR which is greater than or equal to the first preset temperature value is smaller than a second preset time value.
According to the control method for the active regeneration of the DPF of the vehicle, the DPF is automatically controlled to be actively regenerated according to the condition that the accumulated running time value of an engine is greater than or equal to a first preset time value or the accumulated running mileage value of the vehicle is greater than or equal to a first preset mileage value, and meanwhile, the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR which is greater than or equal to the first preset temperature value is smaller than a second preset time value, so that the new vehicle automatically triggers the DPF regeneration, the exhaust temperature is improved, impurities in the aftertreatment or materials in the production process are burnt, the aftertreatment activity of the new vehicle is guaranteed, and the emission grade is improved.
In addition, the control method for the active regeneration of the DPF of the vehicle according to the present invention may further have the following additional technical features:
in some embodiments of the present invention, the step of determining that the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to the first preset temperature value is less than the second preset time value further includes:
acquiring an accumulated time value of DPF active regeneration of a vehicle;
and controlling the duration of the automatic active regeneration of the DPF of the vehicle according to the condition that the accumulated time value of the active regeneration of the DPF is smaller than the second preset time value.
In some embodiments of the invention, the duration is a difference between the second preset time value and the accumulated time value of the DPF active regeneration according to the vehicle.
In some embodiments of the invention, the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to the first preset temperature value is greater than or equal to the second preset time value to control the DPF to stop the active regeneration.
In some embodiments of the present invention, the DPF active regeneration termination is controlled according to whether an accumulated time value of DPF active regeneration of the vehicle is greater than or equal to a second preset time value.
In another aspect of the present invention, a control device for vehicle DPF active regeneration is provided, wherein the control device for vehicle DPF active regeneration is used for executing the control method for vehicle DPF active regeneration,
in some embodiments of the present invention, the control apparatus includes an acquisition unit, a judgment unit, and a triggered regeneration control unit, wherein:
the acquisition unit is used for acquiring an accumulated running time value of the engine, an accumulated driving mileage value of the vehicle and an exhaust temperature value of the vehicle-mounted SCR;
the judging unit is used for judging that the accumulated running time value of the engine is greater than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value and is smaller than a second preset time value to obtain a first judging result; or the accumulated time value used for judging that the accumulated driving mileage value of the vehicle is more than or equal to a first preset mileage value and the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value is less than a second preset time value to obtain a second judgment result;
and the regeneration triggering control unit controls the DPF to automatically and actively regenerate according to the first judgment result or the second judgment result.
In some embodiments of the present invention, the obtaining unit includes a first obtaining module, a second obtaining module, and a third obtaining module;
the first obtaining module is used for obtaining the accumulated running time value of the engine;
the second acquisition module is used for acquiring the accumulated driving mileage value of the vehicle;
the third obtaining module is used for obtaining an exhaust temperature value of the vehicle-mounted SCR.
In some embodiments of the present invention, the third obtaining module further includes:
and acquiring an accumulated time value of the exhaust temperature value of the vehicle-mounted SCR.
In some embodiments of the present invention, the obtaining unit further comprises a fourth obtaining module;
the fourth acquisition module is used for acquiring an accumulated time value of DPF active regeneration of the vehicle.
In some embodiments of the invention, the method further comprises a computing unit;
the calculating unit is used for calculating a time difference value between the second preset time value and an accumulated time value of DPF active regeneration of the vehicle;
and the regeneration triggering control unit controls the duration of the automatic active regeneration of the DPF according to the time difference.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
FIG. 1 schematically illustrates a flow chart of a control method for active regeneration of a DPF of a vehicle according to an embodiment of the invention;
FIG. 2 schematically illustrates a flow chart of a control method for active regeneration of a DPF of a vehicle according to another embodiment of the invention;
FIG. 3 schematically shows a control flow diagram of a control apparatus for active regeneration of a DPF of a vehicle according to an embodiment of the invention;
FIG. 4 schematically shows a control flowchart of a control apparatus for active regeneration of a DPF of a vehicle according to another embodiment of the invention;
fig. 5 schematically shows a block diagram of an acquisition unit of a control device for active regeneration of a DPF of a vehicle according to an embodiment of the invention.
1: an acquisition unit; 101: a first acquisition module; 102: a second acquisition module; 103: a third obtaining module; 104: a fourth obtaining module; 2: a judgment unit; 3: triggering a regeneration control unit; 4: and a computing unit.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The invention provides a control method for vehicle DPF active regeneration, which has better accuracy of the obtained carbon loading amount.
As shown in fig. 1 and 2, the control method for DPF active regeneration of a vehicle in the present embodiment includes the steps of:
s1, acquiring an accumulated running time value of the engine, an accumulated driving mileage value of the vehicle and an exhaust temperature value of the vehicle-mounted SCR;
s2, controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is more than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value and is less than a second preset time value; or
And controlling the DPF to automatically and actively regenerate according to the condition that the accumulated driving mileage value of the vehicle is greater than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR which is greater than or equal to the first preset temperature value is smaller than a second preset time value.
Specifically, in step S1, when the SCR-loaded exhaust temperature value is obtained, an integrated time value that the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to a first preset temperature value is obtained, in step S2, the DPF is controlled to automatically and actively regenerate at the same time according to the condition that the integrated time value that the engine integrated operation time value is greater than or equal to the first preset time value or the vehicle integrated mileage value is greater than or equal to the first preset mileage value, and the integrated time value that the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value is less than a second preset time value.
According to the control method for the vehicle DPF active regeneration, the DPF active regeneration is automatically controlled according to the condition that the accumulated running time value of the engine is greater than or equal to the first preset time value or the accumulated running mileage value of the vehicle is greater than or equal to the first preset mileage value, and meanwhile, the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR, which is greater than or equal to the first preset temperature value, is smaller than the second preset time value, so that the new vehicle automatically triggers the DPF regeneration to improve the exhaust temperature, thereby burning the aftertreatment impurities or the production process materials, further ensuring the aftertreatment activity of the new vehicle, and improving the emission grade.
As shown in fig. 2, in some embodiments of the present invention, the step of determining that the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to the first preset temperature value is less than the second preset time value further includes:
step S201, acquiring an accumulated time value of DPF active regeneration of a vehicle;
and S202, controlling the duration of the automatic active regeneration of the DPF of the vehicle according to the condition that the accumulated time value of the active regeneration of the DPF of the vehicle is smaller than the second preset time value.
In the embodiment, while acquiring the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to the first preset temperature value, the accumulated time value of the DPF active regeneration of the vehicle can be acquired, and in addition, in the above embodiment, according to the condition that the engine accumulated running time value is greater than or equal to the first preset time value or the vehicle accumulated driving mileage value is greater than or equal to the first preset mileage value, the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value and the accumulated time value of the DPF active regeneration of the vehicle is less than the second preset time value, the duration of the DPF automatic active regeneration is controlled, that is, the control duration is as follows;
the duration is a difference between the second preset time value and the accumulated time value according to the DPF active regeneration of the vehicle.
It should be noted that, if the DPF active regeneration function must be suspended when the vehicle is shut down, for example, under the condition that the DPF active regeneration function of a new vehicle is triggered, the current "integrated time value of DPF active regeneration of the vehicle" and "integrated time value of which exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value" are stored; when the DPF active regeneration condition is started or re-met next time, the DPF active regeneration is automatically triggered, the 'accumulated time value of the DPF active regeneration of the vehicle' and the 'accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being more than or equal to the first preset temperature value' are continuously timed on the basis of the accumulated timing stored last time.
In some embodiments of the invention, the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to the first preset temperature value is greater than or equal to the second preset time value to control the DPF to stop the active regeneration. In this embodiment, that is, when the "integrated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value" is greater than or equal to the second preset time value, the DPF active regeneration function of the new vehicle is controlled to be terminated.
In some embodiments of the present invention, it is still another case that the DPF active regeneration function of the new vehicle is terminated by controlling the DPF active regeneration termination according to the accumulated time value of the DPF active regeneration of the vehicle being greater than or equal to a second preset time value. Namely, when the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to a first preset temperature value and the accumulated time value of the DPF active regeneration of the vehicle is greater than or equal to a second preset time value, the DPF active regeneration function of the new vehicle is controlled to be stopped.
It should be noted that the first preset time value, the driving mileage value, the first preset temperature value, and the accumulated time value are all variables, and are calibrated by an engineer according to actual requirements.
As shown in fig. 3 to 5, another aspect of the present invention also provides a control device for vehicle DPF active regeneration, wherein the control device for vehicle DPF active regeneration is used for executing the control method for vehicle DPF active regeneration described above,
in some embodiments of the present invention, the control apparatus comprises an acquisition unit 1, a judgment unit 2, and a triggered regeneration control unit 3, wherein:
the acquisition unit 1 is used for acquiring an accumulated running time value of an engine, an accumulated driving mileage value of a vehicle and an exhaust temperature value of a vehicle-mounted SCR;
the judging unit 2 is used for judging that the accumulated running time value of the engine is greater than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value and is less than a second preset time value to obtain a first judging result; or the accumulated time value used for judging that the accumulated driving mileage value of the vehicle is more than or equal to a first preset mileage value and the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value is less than a second preset time value to obtain a second judgment result;
as shown in fig. 5, the triggered regeneration control unit 3 controls the DPF to automatically and actively regenerate according to the first determination result or the second determination result.
In some embodiments of the present invention, the obtaining unit 1 includes a first obtaining module 101, a second obtaining module 102 and a third obtaining module 103;
the first obtaining module 101 is configured to obtain the accumulated running time value of the engine;
the second obtaining module 102 is configured to obtain an accumulated driving mileage value of the vehicle;
the third obtaining module 103 is configured to obtain an exhaust temperature value of the vehicle-mounted SCR.
In some embodiments of the present invention, the third obtaining module 103 further includes:
and acquiring an accumulated time value of the exhaust temperature value of the vehicle-mounted SCR.
Optionally, the obtaining unit 1 further includes a fourth obtaining module 104;
the fourth acquisition module 104 is configured to acquire an accumulated time value for DPF active regeneration of a vehicle.
As shown in fig. 4, in some embodiments of the invention, the method further comprises a calculation unit 4;
the calculating unit 4 is configured to calculate a time difference between the second preset time value and an accumulated time value of DPF active regeneration of the vehicle;
and the regeneration triggering control unit 3 controls the duration of the automatic active regeneration of the DPF according to the time difference value.
Specifically, according to the control method for the DPF active regeneration of the vehicle in the present embodiment:
implementation method one
Step S1, acquiring an accumulated running time value of the engine and an exhaust temperature value of the vehicle-mounted SCR;
and step S2, controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is more than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value and is less than a second preset time value.
Implementation method two
Step S1, acquiring the vehicle accumulated driving mileage value and the exhaust temperature value of the vehicle-mounted SCR;
and step S2, controlling the DPF to automatically and actively regenerate according to the fact that the accumulated driving mileage value of the vehicle is larger than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR, which is larger than or equal to the first preset temperature value, is smaller than a second preset time value.
Implementation method three
S1, acquiring an accumulated running time value of the engine, an accumulated driving mileage value of the vehicle and an exhaust temperature value of the vehicle-mounted SCR;
s2, controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is more than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value and is less than a second preset time value; or controlling the DPF to automatically and actively regenerate according to the fact that the accumulated running mileage value of the vehicle is larger than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR, which is larger than or equal to the first preset temperature value, is smaller than a second preset time value.
Implementation method four
Step S1, obtaining the accumulated running time value of the engine and the exhaust temperature value of the vehicle-mounted SCR,
step S2, obtaining the cumulative time value of DPF active regeneration of the vehicle while obtaining the cumulative time value of the exhaust temperature value of the vehicle-mounted SCR, wherein the cumulative time value of DPF active regeneration of the vehicle is obtained according to the cumulative time value of the engine cumulative operation time value being equal to or greater than the first preset time value and the cumulative time value of exhaust temperature value of the vehicle-mounted SCR being equal to or greater than the first preset temperature value.
Method for carrying out the fifth
Step S1, acquiring the vehicle accumulated driving mileage value and the exhaust temperature value of the vehicle-mounted SCR,
step S2, obtaining an accumulated time value of DPF active regeneration of the vehicle while obtaining the accumulated time value of the vehicle-mounted SCR exhaust temperature value greater than or equal to the first preset temperature value, and controlling the duration of DPF automatic active regeneration according to the engine accumulated operation time value greater than or equal to the first preset time value or the vehicle accumulated travel mileage value greater than or equal to the first preset time value, and meeting the requirements that the vehicle-mounted SCR exhaust temperature value is greater than or equal to the first preset temperature value and the vehicle DPF active regeneration accumulated time value is less than the second preset time value.
Method for carrying out the sixth method
S1, acquiring an accumulated running time value of the engine, an accumulated driving mileage value of the vehicle and an exhaust temperature value of the vehicle-mounted SCR;
s2, controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is more than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is more than or equal to a first preset temperature value and is less than a second preset time value; or controlling the DPF to automatically and actively regenerate according to the fact that the accumulated running mileage value of the vehicle is larger than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR, which is larger than or equal to the first preset temperature value, is smaller than a second preset time value.
In step S2, while acquiring the integrated time value of the exhaust temperature value of the vehicle-mounted SCR being equal to or greater than the first preset temperature value, the integrated time value of the DPF active regeneration of the vehicle may also be acquired, and in the above embodiment, the duration of the DPF automatic active regeneration is controlled according to the condition that the engine integrated operation time value is equal to or greater than the first preset time value or the vehicle integrated mileage value is equal to or greater than the first preset mileage value, and the exhaust temperature value of the vehicle-mounted SCR is equal to or greater than the first preset temperature value and the integrated time value of the DPF active regeneration of the vehicle is less than the second preset time value.
In summary, according to the control method for the DPF active regeneration of the vehicle in the embodiment, the DPF active regeneration is automatically controlled according to the accumulated running time value of the engine is greater than or equal to the first preset time value or the accumulated driving mileage value of the vehicle is greater than or equal to the first preset mileage value, and meanwhile, according to the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR which is greater than or equal to the first preset temperature value is less than the second preset time value, so that the new vehicle automatically triggers the DPF regeneration, thereby improving the strategy of exhaust temperature to burn off the post-treatment impurities or the production process materials, thereby ensuring the post-treatment activity of the new vehicle and improving the emission level.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A method of controlling active regeneration of a DPF in a vehicle, the method comprising the steps of:
acquiring an accumulated running time value of an engine, an accumulated driving mileage value of a vehicle and an exhaust temperature value of a vehicle-mounted SCR;
controlling the DPF to automatically and actively regenerate according to the condition that the accumulated running time value of the engine is greater than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to a first preset temperature value and is less than a second preset time value; or
Controlling the DPF to automatically and actively regenerate according to the condition that the accumulated driving mileage value of the vehicle is greater than or equal to a first preset mileage value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR which is greater than or equal to the first preset temperature value is smaller than a second preset time value;
the method is characterized in that the accumulated time value when the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value and is less than the second preset time value further comprises the following steps:
acquiring an accumulated time value of DPF active regeneration of a vehicle;
and controlling the duration of the automatic active regeneration of the DPF of the vehicle according to the condition that the accumulated time value of the active regeneration of the DPF is smaller than the second preset time value.
2. The method of controlling DPF active regeneration of a vehicle according to claim 1, wherein the duration is a difference between the second preset time value and the accumulated time value according to DPF active regeneration of the vehicle.
3. The method as claimed in claim 1, wherein the integrated time value of the exhaust temperature value of the vehicle-mounted SCR being greater than or equal to a first preset temperature value is greater than or equal to a second preset time value to control the DPF active regeneration to be terminated.
4. The method of claim 1 wherein the end of DPF active regeneration is controlled based on whether the integrated time value for DPF active regeneration for the vehicle is greater than or equal to a second predetermined time value.
5. A control device for active regeneration of a DPF of a vehicle for performing the control method for active regeneration of a DPF of a vehicle according to any one of claims 1 to 4, comprising an acquisition unit, a judgment unit, and a triggered regeneration control unit, wherein:
the acquisition unit is used for acquiring an accumulated running time value of the engine, an accumulated driving mileage value of the vehicle and an exhaust temperature value of the vehicle-mounted SCR;
the judging unit is used for judging that the accumulated running time value of the engine is greater than or equal to a first preset time value and the accumulated time value of the exhaust temperature value of the vehicle-mounted SCR is greater than or equal to the first preset temperature value and is smaller than a second preset time value to obtain a first judging result; or
The accumulated time value used for judging whether the accumulated driving mileage value of the vehicle is more than or equal to a first preset mileage value and whether the exhaust temperature value of the vehicle-mounted SCR is more than or equal to the first preset temperature value is less than a second preset time value to obtain a second judgment result;
and the regeneration triggering control unit controls the DPF to automatically and actively regenerate according to the first judgment result or the second judgment result.
6. The control device for active regeneration of a DPF of a vehicle according to claim 5, wherein the obtaining unit comprises a first obtaining module, a second obtaining module, and a third obtaining module;
the first obtaining module is used for obtaining the accumulated running time value of the engine;
the second acquisition module is used for acquiring the accumulated driving mileage value of the vehicle;
the third obtaining module is used for obtaining an exhaust temperature value of the vehicle-mounted SCR.
7. The control apparatus for active regeneration of a DPF of a vehicle according to claim 6, wherein said third obtaining module further comprises:
and acquiring an accumulated time value of the exhaust temperature value of the vehicle-mounted SCR.
8. The control device for active regeneration of a DPF of a vehicle according to claim 6, wherein the obtaining unit further comprises a fourth obtaining module;
the fourth acquisition module is used for acquiring an accumulated time value of DPF active regeneration of the vehicle.
9. The control device for active regeneration of a DPF of a vehicle according to claim 8, further comprising a calculation unit;
the calculating unit is used for calculating a time difference value between the second preset time value and an accumulated time value of DPF active regeneration of the vehicle;
and the regeneration triggering control unit controls the duration of the automatic active regeneration of the DPF according to the time difference.
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