CN115263578B - Control method and device for passive regeneration of gasoline engine particle catcher and vehicle - Google Patents

Control method and device for passive regeneration of gasoline engine particle catcher and vehicle Download PDF

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Publication number
CN115263578B
CN115263578B CN202210867463.2A CN202210867463A CN115263578B CN 115263578 B CN115263578 B CN 115263578B CN 202210867463 A CN202210867463 A CN 202210867463A CN 115263578 B CN115263578 B CN 115263578B
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gasoline engine
data
preset threshold
controlling
threshold value
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CN115263578A (en
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郑海亮
闫涛
宋庆文
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FAW Group Corp
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FAW Group Corp
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust 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
    • F01N3/023—Exhaust 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 using means for regenerating the filters, e.g. by burning trapped particles
    • 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, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0223—Variable control of the intake valves only
    • F02D13/0226—Variable control of the intake valves only changing valve lift or valve lift and timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • 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
    • F01N2900/1602—Temperature of exhaust gas apparatus
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D2013/0296—Changing the valve lift only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • 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

The invention discloses a control method and device for passive regeneration of a gasoline engine particle catcher and a vehicle. Wherein the method comprises the following steps: responding to a first instruction, acquiring first data and second data, wherein the first instruction is a passive regeneration instruction of a gasoline engine particle catcher; inquiring from a preset threshold value table according to the first data to obtain a preset threshold value, wherein the preset threshold value is contained in the preset threshold value table; judging the size relation between the preset threshold value and the second data to obtain a judgment result; and controlling the gasoline engine to execute control actions according to the judging result, wherein the control actions comprise controlling the valve lift of the gasoline engine to adjust the air flow throughput of the gasoline engine particle catcher. The invention solves the technical problem of low GPF regeneration efficiency caused by lower threshold values of the GPF carbon load and the GPF inlet temperature for prohibiting fuel cut.

Description

Control method and device for passive regeneration of gasoline engine particle catcher and vehicle
Technical Field
The invention relates to the field of automobiles, in particular to a control method and device for passive regeneration of a gasoline engine particle catcher and a vehicle.
Background
For direct injection engines in cylinders, particulate emissions increase significantly compared to non-direct injection engines, and national six-emission regulations are also stringent requirements for automotive particulate emissions. GPF (gasoline particulate matter trap) is an important emission post-treatment technology and is also a necessary device for automobiles meeting the national six-emission requirements. Carbon particles are trapped and accumulated by the GPF, and when the carbon loading exceeds a certain limit, exhaust back pressure is raised, which affects dynamics, economy and the like of the automobile, so that regeneration control of the GPF is required.
The regeneration control of the GPF is divided into two modes, namely active regeneration and passive regeneration, wherein the passive regeneration of the GPF usually occurs in the vehicle coasting fuel cut process, and when the inlet temperature of the GPF meets the regeneration temperature requirement and has certain oxygen, the accumulated particulate matters in the GPF can be burnt. However, when the carbon loading of the GPF or the temperature of the GPF inlet exceeds a certain limit value, the internal temperature of the GPF is increased sharply due to the combustion of a large amount of carbon particles after direct fuel cut, and the GPF is damaged once the GPF tolerance temperature is exceeded. The engine electronic control system is generally provided with a GPF carbon load and a GPF inlet temperature limit value which allow oil interruption, and the oil interruption is forbidden under the condition that the limit value is exceeded, namely the passive regeneration of the GPF is forbidden, so that the GPF regeneration efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a control method, a control device and a vehicle for passive regeneration of a gasoline engine particle catcher, which are used for at least solving the technical problem of low GPF regeneration efficiency caused by low threshold values of GPF carbon loading and GPF inlet temperature prohibiting fuel cut-off.
According to an aspect of the embodiment of the invention, there is provided a control method for passive regeneration of a gasoline engine particle catcher, comprising:
responding to a first instruction, acquiring first data and second data, wherein the first data comprises the current carbon loading of the gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data is the current temperature of the inlet of the gasoline engine particle catcher when the first data is the current carbon loading of the gasoline engine particle catcher, the second data is the current carbon loading of the gasoline engine particle catcher when the first data is the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher; inquiring from a preset threshold value table according to the first data to obtain a preset threshold value, wherein the preset threshold value is contained in the preset threshold value table; judging the size relation between the preset threshold value and the second data to obtain a judgment result; and controlling the gasoline engine to execute control actions according to the judging result, wherein the control actions comprise controlling the valve lift of the gasoline engine to adjust the air flow throughput of the gasoline engine particle catcher.
Optionally, the preset threshold includes a first preset threshold, where the first preset threshold is a fuel cut-off prohibition threshold; the step of judging the size relation between the preset threshold and the second data to obtain a judgment result comprises the following steps: judging the size relation between the first preset threshold value and the second data to obtain a first judgment result; according to the judging result, controlling the gasoline engine to execute the control action comprises: if the second data in the first judgment result is larger than a first preset threshold value, controlling the gasoline engine to execute a first control action, wherein the first control action comprises: the gasoline engine is prohibited from fuel cut.
Optionally, the preset threshold further includes a second preset threshold, where the second preset threshold is smaller than the first preset threshold; the step of judging the size relation between the preset threshold and the second data to obtain a judgment result further comprises the following steps: judging the size relation between a second preset threshold value and second data to obtain a second judgment result; according to the judgment result, controlling the gasoline engine to execute the control action further comprises: and if the second data in the second judging result is larger than a second preset threshold value, controlling the gasoline engine to execute a second control action, wherein the second control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to reduce the air flow throughput of the gasoline engine particle catcher.
Optionally, according to the judgment result, controlling the gasoline engine to execute the control action further includes: and if the second data in the second judging result is smaller than a second preset threshold value, controlling the gasoline engine to execute a third control action, wherein the third control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to improve the air flow throughput of the gasoline engine particle catcher.
Optionally, controlling the valve lift of the gasoline engine to reduce airflow throughput of the gasoline engine particulate trap includes: determining a first lift value from the first data and the second data; and controlling the valve lift of the gasoline engine to a first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, controlling the valve lift of the gasoline engine to increase airflow throughput of the gasoline engine particulate trap includes: determining a second lift value based on the first data and the second data; and controlling the valve lift of the gasoline engine to a second lift value, wherein the second lift value is larger than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, the preset threshold table is obtained based on a bench calibration mode.
According to one embodiment of the present invention, there is also provided a control device for passive regeneration of a gasoline engine particle catcher, including:
The acquisition module is used for responding to a first instruction, acquiring first data and second data, wherein the first data comprises the current carbon load of the gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data is the current temperature of the inlet of the gasoline engine particle catcher when the first data is the current carbon load of the gasoline engine particle catcher, the second data is the current carbon load of the gasoline engine particle catcher when the first data is the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher; the query module is used for querying from a preset threshold value table according to the first data to obtain a preset threshold value, wherein the preset threshold value is contained in the preset threshold value table; the judging module is used for judging the magnitude relation between the preset threshold value and the second data to obtain a judging result; and the control module is used for controlling the gasoline engine to execute control actions according to the judging result, wherein the control actions comprise controlling the valve lift of the gasoline engine to adjust the air flow throughput of the gasoline engine particle catcher.
Optionally, the preset threshold value obtained by query of the query module includes a first preset threshold value, where the first preset threshold value is a fuel cut-off prohibition threshold value; the judging module judging the size relation between the preset threshold value and the second data to obtain a judging result comprises the following steps: judging the size relation between the first preset threshold value and the second data to obtain a first judgment result; the control module controls the gasoline engine to execute control actions according to the judging result, and the control module comprises the following steps: if the second data in the first judgment result is larger than a first preset threshold value, controlling the gasoline engine to execute a first control action, wherein the first control action comprises: the gasoline engine is prohibited from fuel cut.
Optionally, the preset threshold value obtained by the query of the query module further comprises a second preset threshold value, and the second preset threshold value is smaller than the first preset threshold value; the judging module judging the size relation between the preset threshold value and the second data to obtain a judging result further comprises: judging the size relation between a second preset threshold value and second data to obtain a second judgment result; the control module controls the gasoline engine to execute control actions according to the judging result, and the control module further comprises: and if the second data in the second judging result is larger than a second preset threshold value, controlling the gasoline engine to execute a second control action, wherein the second control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to reduce the air flow throughput of the gasoline engine particle catcher.
Optionally, the control module controls the gasoline engine to execute the control action according to the judgment result further includes: and if the second data in the second judging result is smaller than a second preset threshold value, controlling the gasoline engine to execute a third control action, wherein the third control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to improve the air flow throughput of the gasoline engine particle catcher.
Optionally, the control module controlling valve lift of the gasoline engine to reduce airflow throughput of the gasoline engine particulate trap includes: determining a first lift value from the first data and the second data; and controlling the valve lift of the gasoline engine to a first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, the control module controlling valve lift of the gasoline engine to increase airflow throughput of the gasoline engine particulate trap includes: determining a second lift value based on the first data and the second data; and controlling the valve lift of the gasoline engine to a second lift value, wherein the second lift value is larger than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, the preset threshold table in the query module is obtained based on a bench calibration mode.
According to one embodiment of the present invention, there is also provided a vehicle, a computer program being arranged to run on a processor deployed in the vehicle, to perform the control method of passive regeneration of a gasoline engine particulate trap of any one of the above.
According to one embodiment of the present invention, there is also provided a nonvolatile storage medium in which a computer program is stored, wherein the computer program is configured to perform the control method of passive regeneration of the gasoline engine particulate trap in any one of the above when running on a computer or processor.
In the embodiment of the invention, first data and second data are obtained in response to a first instruction, wherein the first data comprise the current carbon load of a gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data are the current temperature of the inlet of the gasoline engine particle catcher when the first data are the current carbon load of the gasoline engine particle catcher, the second data are the current carbon load of the gasoline engine particle catcher when the first data are the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher; inquiring from a preset threshold value table according to the first data to obtain a preset threshold value; judging the size relation between the preset threshold value and the second data to obtain a judgment result; and controlling the gasoline engine to execute control actions according to the judging result. In the above steps, through judging the magnitude relation between the second data and the preset threshold value, the valve lift of the gasoline engine is controlled according to the judging result so as to adjust the airflow throughput of the gasoline engine particle catcher, and the change of the airflow throughput of the gasoline engine particle catcher can raise the threshold value for prohibiting fuel cut, so that the technical problem that the GPF regeneration efficiency is low due to the fact that the threshold value for prohibiting fuel cut of the GPF carbon loading and the GPF inlet temperature is lower is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method for controlling passive regeneration of a gasoline engine particulate trap in accordance with one embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling passive regeneration of a gasoline engine particulate trap in accordance with one embodiment of the present invention;
FIG. 3 is a block diagram of a passive regeneration control system for a particulate trap of a gasoline engine according to one embodiment of the present invention;
FIG. 4 is a block diagram of a control device for passive regeneration of a gasoline engine particulate trap in accordance with one embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided an embodiment of a method of controlling passive regeneration of a gasoline engine particulate trap, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than that illustrated herein.
The method embodiments may be performed in an electronic device, similar control device or system that includes a memory and a processor. Taking an electronic device as an example, the electronic device may include one or more processors and memory for storing data. Optionally, the electronic apparatus may further include a communication device for a communication function and a display device. It will be appreciated by those of ordinary skill in the art that the foregoing structural descriptions are merely illustrative and are not intended to limit the structure of the electronic device. For example, the electronic device may also include more or fewer components than the above structural description, or have a different configuration than the above structural description.
The processor may include one or more processing units. For example: the processor may include a processing device of a central processing unit (central processing unit, CPU), a graphics processor (graphics processing unit, GPU), a digital signal processing (digital signal processing, DSP) chip, a microprocessor (microcontroller unit, MCU), a programmable logic device (field-programmable gate array, FPGA), a neural network processor (neural-network processing unit, NPU), a tensor processor (tensor processing unit, TPU), an artificial intelligence (artificial intelligent, AI) type processor, or the like. Wherein the different processing units may be separate components or may be integrated in one or more processors. In some examples, the electronic device may also include one or more processors.
The memory may be used to store a computer program, for example, a computer program corresponding to a control method for passive regeneration of a gasoline engine particle catcher in the embodiment of the present invention, and the processor implements the control method for passive regeneration of a gasoline engine particle catcher by running the computer program stored in the memory. The memory may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory may further include memory remotely located with respect to the processor, which may be connected to the electronic device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication device is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the communication device includes a network adapter (network interface controller, NIC) that can connect to other network devices through the base station to communicate with the internet. In one example, the communication device may be a Radio Frequency (RF) module for communicating with the internet wirelessly.
Display devices may be, for example, touch screen type liquid crystal displays (liquid crystal display, LCDs) and touch displays (also referred to as "touch screens" or "touch display screens"). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a graphical user interface (graphical user interface, GUI) with which a user can interact with the GUI by touching finger contacts and/or gestures on the touch-sensitive surface, where the human-machine interaction functionality optionally includes the following interactions: executable instructions for performing the above-described human-machine interaction functions, such as creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, sending and receiving electronic mail, talking interfaces, playing digital video, playing digital music, and/or web browsing, are configured/stored in a computer program product or readable storage medium executable by one or more processors.
It should be noted that the GPF is a particle catcher of the gasoline engine, and the particle catcher of the gasoline engine is matched with the gasoline engine for use.
FIG. 1 is a flow chart of a control method for passive regeneration of a gasoline engine particulate trap according to an embodiment of the present invention, as shown in FIG. 1, comprising the steps of:
Step S101, in response to the first instruction, acquiring first data and second data.
The first data comprise the current carbon loading amount of the gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data are the current temperature of the inlet of the gasoline engine particle catcher when the first data are the current carbon loading amount of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher when the first data are the current temperature of the inlet of the gasoline engine particle catcher.
Alternatively, the current temperature of the petrol engine particle catcher inlet is obtained by a temperature sensor installed at the petrol engine particle catcher inlet. The current carbon loading of the gasoline engine particle catcher is comprehensively calculated through an original emission model and a differential pressure model. The original emission model and the differential pressure model are preset in an engine electric control system of the vehicle according to the actual emission condition of the vehicle.
Step S102, a preset threshold value is obtained by inquiring from a preset threshold value table according to the first data.
The preset threshold value is contained in a preset threshold value table. The preset threshold value table comprises the following steps: a preset threshold for a current temperature of the petrol engine particle trap inlet, a preset threshold for a current carbon loading of the petrol engine particle trap.
For example, if the first data is the current temperature of the inlet of the gasoline engine particle catcher, a preset threshold value is obtained by inquiring from a preset threshold value table according to the first data, namely, the preset threshold value of the current carbon load of the gasoline engine particle catcher is obtained; and if the current carbon load of the gasoline engine particle catcher is the current carbon load, inquiring from a preset threshold value table according to the first data to obtain a preset threshold value, namely obtaining the preset threshold value of the current temperature of the inlet of the gasoline engine particle catcher.
Step S103, judging the size relation between the preset threshold and the second data to obtain a judging result.
For example, if the first data is the current temperature of the inlet of the gasoline engine particle catcher, the judging result is obtained by judging the size relation between the set threshold and the second data, that is, the judging result is obtained by judging the size relation between the current carbon load of the gasoline engine particle catcher and the preset threshold.
It should be noted that, the preset threshold value of the first data and the preset threshold value of the second data in the preset threshold value table are in a linear corresponding relationship, that is, the larger the preset threshold value of the first data is, the smaller the preset threshold value of the second data is.
Step S104, according to the judging result, the gasoline engine is controlled to execute the control action.
Wherein the control action includes controlling a valve lift of the gasoline engine to adjust airflow throughput of the gasoline engine particulate trap.
The air flow throughput of the gasoline engine particle catcher can be adjusted by controlling the air valve lift of the gasoline engine, so that the speed of carbon particle combustion can be controlled by the influence of air flow combustion.
It should be noted that, the passive regeneration of the GPF usually occurs during the vehicle coasting fuel cut, and the gasoline engine may be directly cut when the passive regeneration command of the gasoline engine particle catcher is responded, if no control action is executed. After the gasoline engine is cut off, carbon particles in the gasoline engine particle catcher begin to burn, and the gasoline engine particle catcher begins to passively regenerate. However, if the carbon loading in the gasoline engine particle trap or the inlet temperature of the gasoline engine particle trap exceeds a certain threshold, the passive regeneration temperature of the gasoline engine particle trap will exceed the tolerance temperature of the gasoline engine particle trap during combustion, resulting in damage to the gasoline engine particle trap. Thus, the electric control system of the gasoline engine is generally provided with a carbon loading threshold value and an inlet temperature threshold value which allow fuel cut, and when the threshold value is exceeded, the fuel cut is forbidden.
Wherein, the passive regeneration temperature refers to the highest temperature of the inside of the gasoline engine particle catcher, which is reached by the heat released by the combustion of carbon particles in the gasoline engine particle catcher; the withstand temperature refers to the highest temperature that the gasoline engine particulate trap can withstand.
In the embodiment of the invention, first data and second data are obtained in response to a first instruction, wherein the first data comprise the current carbon load of a gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data are the current temperature of the inlet of the gasoline engine particle catcher when the first data are the current carbon load of the gasoline engine particle catcher, the second data are the current carbon load of the gasoline engine particle catcher when the first data are the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher; inquiring from a preset threshold value table according to the first data to obtain a preset threshold value; judging the size relation between the preset threshold value and the second data to obtain a judgment result; and controlling the gasoline engine to execute control actions according to the judging result. In the above steps, through judging the magnitude relation between the second data and the preset threshold value, the valve lift of the gasoline engine is controlled according to the judging result so as to adjust the airflow throughput of the gasoline engine particle catcher, and the change of the airflow throughput of the gasoline engine particle catcher can control the combustion speed of carbon particles so as to improve the threshold value of the gasoline engine for prohibiting fuel cut, thereby solving the technical problem of low GPF regeneration efficiency caused by lower threshold values of the GPF carbon loading and GPF inlet temperature for prohibiting fuel cut.
For example, when the method provided by the invention is not adopted, the GPF carbon loading is 100, the GPF inlet temperature is 100, the passive regeneration temperature exceeds the tolerance temperature when the carbon particles are combusted, and the fuel cut is forbidden. By adopting the method provided by the invention, the GPF carbon load is 100, the oil can be cut off when the GPF inlet temperature is 100, then the air flow throughput of the gasoline engine particle catcher is reduced by controlling the air valve lift of the gasoline engine, the combustion speed of carbon particles is reduced, and the passive regeneration temperature is lower than the tolerance temperature when the carbon particles are combusted.
It should be noted that the values of the carbon loading of the GPF and the inlet temperature of the GPF are not in units, and are only used for exemplary qualitative description of the effects of the present invention, and have no relevance to the values in practical use.
Optionally, the preset threshold in step S102 includes a first preset threshold, where the first preset threshold is a fuel cut-off prohibition threshold.
Step S103, determining the size relationship between the preset threshold and the second data to obtain the determination result may include the following steps:
s1031, judging the size relation between the first preset threshold value and the second data to obtain a first judgment result.
Step S104, according to the judgment result, controlling the gasoline engine to execute the control action may include the following steps:
Step S1041, if the second data in the first determination result is greater than the first preset threshold, controlling the gasoline engine to execute a first control action, where the first control action includes: the gasoline engine is prohibited from fuel cut.
If the queried first preset threshold value is smaller than the second data, the air flow throughput of the gasoline engine particle catcher is reduced by adjusting the air valve lift of the gasoline engine, and the passive regeneration temperature cannot be ensured to be lower than the tolerance temperature, and at the moment, the gasoline engine is controlled to execute the first control action to inhibit oil break so as to protect the gasoline engine particle catcher. By setting the inhibit fuel cut threshold, the gasoline engine particulate trap may be protected from high temperatures.
Optionally, the preset threshold in step S102 further includes a second preset threshold, where the second preset threshold is smaller than the first preset threshold.
Step S103, determining the size relationship between the preset threshold and the second data to obtain the determination result may include the following steps:
s1032, judging the size relation between the second preset threshold and the second data to obtain a second judgment result.
Step S104, according to the judgment result, controlling the gasoline engine to execute the control action may include the following steps:
step S1042, if the second data in the second determination result is greater than the second preset threshold, controlling the gasoline engine to execute a second control action, where the second control action includes: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to reduce the air flow throughput of the gasoline engine particle catcher.
If the queried second preset threshold value is smaller than the second data and the second data is not larger than the first preset threshold value, the gasoline engine is controlled to cut off oil, and the valve lift of the gasoline engine is controlled to reduce the air flow throughput of the gasoline engine particle catcher at the same time of cutting off oil.
When the second data is larger than the second preset threshold value and smaller than the first preset threshold value, the gasoline engine is allowed to cut off, and the gasoline engine particle catcher is passively regenerated. However, under these conditions, the passive regeneration temperature may still be greater than the tolerance temperature without adjusting the valve lift of the gasoline engine to reduce the airflow throughput of the gasoline engine particulate trap.
Based on step S1032 and step S1042, the gasoline engine can be effectively controlled to execute the most appropriate control action according to the actual situation of the second data. The threshold for allowing fuel cut during passive regeneration of the gasoline engine particulate trap is increased by reducing the airflow throughput of the gasoline engine particulate trap.
Optionally, step S104 may further include the following steps of:
step S1043, if the second data in the second determination result is smaller than the second preset threshold, controlling the gasoline engine to execute a third control action, where the third control action includes: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to improve the air flow throughput of the gasoline engine particle catcher.
If the second preset threshold value obtained by inquiry is larger than the second data, the gasoline engine can be directly cut off so that the gasoline engine particle catcher can directly perform passive regeneration. And when the second preset threshold value obtained by inquiry is larger than the second data, the passive regeneration temperature is lower than the tolerance temperature. Under the condition, the valve lift of the gasoline engine can be controlled while the fuel is cut off so as to improve the air flow throughput of the gasoline engine particle catcher, accelerate the combustion speed of carbon particles and further improve the passive regeneration efficiency of the gasoline engine particle catcher.
Optionally, in step S1042, controlling the valve lift of the gasoline engine to reduce the airflow throughput of the gasoline engine particulate trap may include the steps of:
step S1042a determines a first lift value based on the first data and the second data.
Specifically, the first lift value is determined by the first data and the second data together, and the preset lift value table is queried according to the first data and the second data to obtain the first lift value. The preset lift value table is obtained through a bench calibration mode.
In step S1042b, the valve lift of the gasoline engine is controlled to a first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
Specifically, the first lift value is less than the lift value of the gasoline engine before fuel cut, and when the valve lift of the gasoline engine is controlled to the first lift value, the air flow passing through the gasoline engine particle catcher is reduced relative to the air flow passing through the gasoline engine before fuel cut.
Optionally, in step S1043, controlling the valve lift of the gasoline engine to increase the airflow throughput of the gasoline engine particle catcher may include the steps of:
step S1043a, determining a second lift value based on the first data and the second data.
Specifically, the second lift value is determined by the first data and the second data together, and the second lift value is obtained by searching a preset lift value table according to the first data and the second data. The preset lift value table is obtained through a bench calibration mode.
And step S1043b, controlling the valve lift of the gasoline engine to a second lift value, wherein the second lift value is larger than the lift value of the valve before the fuel cut of the gasoline engine.
Specifically, the second lift value is greater than the lift value of the gasoline engine before the fuel cut, and when the valve lift of the gasoline engine is controlled to the second lift value, the air flow rate passing through the particulate trap of the gasoline engine is increased relative to the air flow rate passing through the particulate trap before the fuel cut.
It should be noted that, in the step S1042b or S1043b, the air flow throughput in the particle catcher of the gasoline engine is controlled by controlling the valve lift of the gasoline engine. The steps S1042b and S1043b are more convenient than providing additional wind sources to control the airflow flux in the particle catcher of the gasoline engine.
Optionally, the preset threshold value table is obtained by means of bench calibration.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of passive regeneration of a gasoline engine particle catcher provided by the present invention, as shown in fig. 2:
when the passive regeneration of the GPF on the vehicle is activated, the current carbon loading of the GPF and the GPF inlet temperature are firstly obtained, and then the current carbon loading of the GPF and the GPF inlet temperature are compared with a first preset threshold value.
For example, if the current carbon loading of the GPF is input first, a first preset threshold is obtained by querying from a preset threshold table according to the current carbon loading of the GPF, and then the GPF inlet temperature is compared with the first preset threshold. And if the inlet temperature of the GPF is greater than a first preset threshold value, the gasoline engine is forbidden to cut off the fuel, and the passive regeneration flow of the GPF is stopped. If the inlet temperature of the GPF is smaller than the first preset threshold value, judging whether the inlet temperature of the GPF is larger than the second preset threshold value.
And if the inlet temperature of the GPF is greater than a second preset threshold value, allowing the gasoline engine to cut off fuel, and enabling the variable valve lift system to enter a GPF mode to control a valve lift value first lift value. And when the gasoline engine is restored to supply oil, the variable valve lift system exits the GPF mode, and the GPF regeneration process is ended.
And if the inlet temperature of the GPF is smaller than a second preset threshold value, allowing the gasoline engine to cut off fuel, and enabling the variable valve lift system to enter a GPF mode to control a valve lift value second lift value. And when the gasoline engine is restored to supply oil, the variable valve lift system exits the GPF mode, and the GPF regeneration process is ended.
It should be noted that the above-mentioned flow of controlling the gasoline engine may be completed by the gasoline engine electric control system, which includes the variable valve lift system.
Referring to fig. 3, fig. 3 is a block diagram illustrating a structure of a passive regeneration control system 200 for a particulate trap of a gasoline engine according to an embodiment of the present invention, as shown in fig. 3:
the gasoline engine particulate trap passive regeneration control system 200 includes a GPF carbon load acquisition module 201, a GPF inlet temperature acquisition module 202, a determination module 203, and an intake valve lift control system 204. The GPF carbon load obtaining module 201 is configured to obtain a current carbon load of a GPF, the GPF inlet temperature obtaining module 202 is configured to obtain a current temperature of a GPF inlet, the judging module 203 is configured to compare the GPF carbon load and the GPF inlet temperature with a preset threshold, and the intake valve lift system 204 is configured to control a valve lift of the gasoline engine according to a judging result of the judging module 203.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiment also provides a control device for passive regeneration of the gasoline engine particle catcher, which is used for realizing the embodiment and the preferred implementation mode, and is not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 4 is a block diagram of a control device 300 for passive regeneration of a gasoline engine particle catcher according to an embodiment of the present invention, and as shown in fig. 4, an example of the control device 300 for passive regeneration of a gasoline engine particle catcher is shown, and the device includes: the obtaining module 301 is configured to obtain first data and second data in response to a first instruction, where the first data includes a current carbon loading amount of the gasoline engine particle catcher or a current temperature of an inlet of the gasoline engine particle catcher, the second data is the current temperature of the inlet of the gasoline engine particle catcher when the first data is the current carbon loading amount of the gasoline engine particle catcher, the second data is the current carbon loading amount of the gasoline engine particle catcher when the first data is the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher; the query module 302 is configured to query from a preset threshold table according to the first data to obtain a preset threshold, where the preset threshold is included in the preset threshold table; the judging module 303, the judging module 303 is configured to judge the size relationship between the preset threshold and the second data to obtain a judging result; the control module 304 is configured to control the gasoline engine to perform a control action according to the determination result, where the control action includes controlling a valve lift of the gasoline engine to adjust an airflow throughput of the gasoline engine particle catcher.
Optionally, the preset threshold obtained by querying by the querying module 302 includes a first preset threshold, where the first preset threshold is a fuel cut-off prohibition threshold; the judging module 303 judges the magnitude relation between the preset threshold and the second data to obtain a judging result includes: judging the size relation between the first preset threshold value and the second data to obtain a first judgment result; the control module 304 controls the gasoline engine to execute control actions according to the judging result, including: if the second data in the first judgment result is larger than a first preset threshold value, controlling the gasoline engine to execute a first control action, wherein the first control action comprises: the gasoline engine is prohibited from fuel cut.
Optionally, the preset threshold obtained by the query module 302 further includes a second preset threshold, where the second preset threshold is smaller than the first preset threshold; the judging module 303 further judges the magnitude relation between the preset threshold and the second data to obtain a judging result, which further includes: judging the size relation between a second preset threshold value and second data to obtain a second judgment result; the control module 304 controls the gasoline engine to execute control actions according to the judging result, and the control module further comprises: and if the second data in the second judging result is larger than a second preset threshold value, controlling the gasoline engine to execute a second control action, wherein the second control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to reduce the air flow throughput of the gasoline engine particle catcher.
Optionally, the control module 304 controls the gasoline engine to execute a control action according to the determination result further includes: and if the second data in the second judging result is smaller than a second preset threshold value, controlling the gasoline engine to execute a third control action, wherein the third control action comprises: the gasoline engine fuel cut-off and the valve lift of the gasoline engine are controlled to improve the air flow throughput of the gasoline engine particle catcher.
Optionally, the control module 304 controlling valve lift of the gasoline engine to reduce airflow throughput of the gasoline engine particulate trap includes: determining a first lift value from the first data and the second data; and controlling the valve lift of the gasoline engine to a first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, the control module 304 controlling valve lift of the gasoline engine to increase airflow throughput of the gasoline engine particulate trap includes: determining a second lift value based on the first data and the second data; and controlling the valve lift of the gasoline engine to a second lift value, wherein the second lift value is larger than the lift value of the valve before the fuel cut of the gasoline engine.
Optionally, the preset threshold table in the query module 302 is derived based on the manner in which the gantry is calibrated.
Embodiments of the present invention also provide a vehicle, a computer program being arranged to run on a processor disposed in the vehicle, performing the steps of the embodiments of the control method of passive regeneration of a gasoline engine particulate trap described above.
Alternatively, in the present embodiment, the processor in the vehicle described above may be arranged to run a computer program to perform the steps of:
step S101, in response to the first instruction, acquiring first data and second data.
Step S102, a preset threshold value is obtained by inquiring from a preset threshold value table according to the first data.
Step S103, judging the size relation between the preset threshold and the second data to obtain a judging result.
Step S104, according to the judging result, the gasoline engine is controlled to execute the control action.
Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.
Embodiments of the present invention also provide a non-volatile storage medium having a computer program stored therein, wherein the computer program is configured to perform the steps of the embodiments of the control method for passive regeneration of a gasoline engine particulate trap described above when run on a computer or processor.
Alternatively, in the present embodiment, the above-described nonvolatile storage medium may be configured to store a computer program for performing the steps of:
step S101, in response to the first instruction, acquiring first data and second data.
Step S102, a preset threshold value is obtained by inquiring from a preset threshold value table according to the first data.
Step S103, judging the size relation between the preset threshold and the second data to obtain a judging result.
Step S104, according to the judging result, the gasoline engine is controlled to execute the control action.
Alternatively, in the present embodiment, the above-described nonvolatile storage medium may include, but is not limited to: a usb disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media in which a computer program can be stored.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (8)

1. A control method for passive regeneration of a gasoline engine particle catcher is characterized by comprising the following steps:
responding to a first instruction, acquiring first data and second data, wherein the first data comprises the current carbon loading of a gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data is the current temperature of the inlet of the gasoline engine particle catcher when the first data is the current carbon loading of the gasoline engine particle catcher, the second data is the current carbon loading of the gasoline engine particle catcher when the first data is the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher;
inquiring from a preset threshold value table according to the first data to obtain a preset threshold value, wherein the preset threshold value is contained in the preset threshold value table;
Judging the size relation between the preset threshold and the second data to obtain a judgment result, wherein the preset threshold comprises a first preset threshold and a second preset threshold, the first preset threshold is a fuel cut-off prohibition threshold, and the second preset threshold is smaller than the first preset threshold;
the step of judging the size relation between the preset threshold and the second data to obtain a judgment result comprises the following steps: judging the size relation between the second preset threshold and the second data to obtain a second judgment result;
according to the judging result, controlling the gasoline engine to execute a control action, wherein the control action comprises controlling the valve lift of the gasoline engine to adjust the air flow throughput of the gasoline engine particle catcher;
and controlling the gasoline engine to execute control actions according to the judging result further comprises: and if the second data in the second judging result is larger than the second preset threshold value, controlling the gasoline engine to execute a second control action, wherein the second control action comprises: controlling the gasoline engine to cut off fuel and controlling the valve lift of the gasoline engine to reduce the air flow throughput of the gasoline engine particle catcher;
the controlling the valve lift of the gasoline engine to reduce airflow throughput of the gasoline engine particulate trap includes:
Determining a first lift value from the first data and the second data;
and controlling the valve lift of the gasoline engine to the first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
2. The method for controlling passive regeneration of a particulate trap of a gasoline engine according to claim 1, wherein the determining a magnitude relation between the preset threshold and the second data includes: judging the size relation between the first preset threshold value and the second data to obtain a first judgment result;
and according to the judging result, controlling the gasoline engine to execute control actions comprises the following steps: and if the second data in the first judging result is larger than the first preset threshold value, controlling the gasoline engine to execute a first control action, wherein the first control action comprises: and prohibiting the gasoline engine from cutting off oil.
3. The method for controlling passive regeneration of a particulate trap of a gasoline engine according to claim 1, wherein the controlling the gasoline engine to perform the control action according to the determination result further comprises:
and if the second data in the second judging result is smaller than the second preset threshold value, controlling the gasoline engine to execute a third control action, wherein the third control action comprises: and controlling the gasoline engine to cut off fuel and controlling the valve lift of the gasoline engine to improve the air flow throughput of the gasoline engine particle catcher.
4. The method of controlling passive regeneration of a gasoline engine particulate trap of claim 3, wherein the controlling valve lift of the gasoline engine to increase airflow throughput of the gasoline engine particulate trap comprises:
determining a second lift value from the first data and the second data;
and controlling the valve lift of the gasoline engine to the second lift value, wherein the second lift value is larger than the lift value of the valve before the fuel cut of the gasoline engine.
5. The method for controlling passive regeneration of a particulate trap of a gasoline engine according to claim 1, wherein the preset threshold table is obtained based on a bench calibration.
6. A control device for passive regeneration of a gasoline engine particle catcher, comprising:
the acquisition module is used for responding to a first instruction to acquire first data and second data, wherein the first data comprises the current carbon loading amount of the gasoline engine particle catcher or the current temperature of an inlet of the gasoline engine particle catcher, the second data is the current temperature of the inlet of the gasoline engine particle catcher when the first data is the current carbon loading amount of the gasoline engine particle catcher, the second data is the current carbon loading amount of the gasoline engine particle catcher when the first data is the current temperature of the inlet of the gasoline engine particle catcher, and the first instruction is a passive regeneration instruction of the gasoline engine particle catcher;
The query module is used for obtaining a preset threshold value from a preset threshold value table according to the first data, wherein the preset threshold value is contained in the preset threshold value table;
the judging module is used for judging the magnitude relation between the preset threshold value and the second data to obtain a judging result, wherein the preset threshold value comprises a first preset threshold value and a second preset threshold value, the first preset threshold value is a fuel cut-off prohibition threshold value, and the second preset threshold value is smaller than the first preset threshold value;
the step of judging the size relation between the preset threshold and the second data to obtain a judgment result comprises the following steps: judging the size relation between the second preset threshold and the second data to obtain a second judgment result;
the control module is used for controlling the gasoline engine to execute control actions according to the judging result, wherein the control actions comprise controlling the valve lift of the gasoline engine to adjust the air flow throughput of the gasoline engine particle catcher;
and controlling the gasoline engine to execute control actions according to the judging result further comprises: and if the second data in the second judging result is larger than the second preset threshold value, controlling the gasoline engine to execute a second control action, wherein the second control action comprises: controlling the gasoline engine to cut off fuel and controlling the valve lift of the gasoline engine to reduce the air flow throughput of the gasoline engine particle catcher;
The controlling the valve lift of the gasoline engine to reduce airflow throughput of the gasoline engine particulate trap includes:
determining a first lift value from the first data and the second data;
and controlling the valve lift of the gasoline engine to the first lift value, wherein the first lift value is smaller than the lift value of the valve before the fuel cut of the gasoline engine.
7. A vehicle, characterized in that a computer program is arranged to run on a processor deployed in the vehicle, performing the control method of passive regeneration of a gasoline engine particle catcher as claimed in any of the preceding claims 1-5.
8. A non-volatile storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of controlling passive regeneration of a gasoline engine particulate trap as claimed in any one of claims 1 to 5 when run on a computer or processor.
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