CN115355077A - Parking regeneration control method, control device, readable storage medium and vehicle - Google Patents
Parking regeneration control method, control device, readable storage medium and vehicle Download PDFInfo
- Publication number
- CN115355077A CN115355077A CN202211167038.9A CN202211167038A CN115355077A CN 115355077 A CN115355077 A CN 115355077A CN 202211167038 A CN202211167038 A CN 202211167038A CN 115355077 A CN115355077 A CN 115355077A
- Authority
- CN
- China
- Prior art keywords
- engine
- temperature value
- preset temperature
- exhaust
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008929 regeneration Effects 0.000 title claims abstract description 88
- 238000011069 regeneration method Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 109
- 239000007924 injection Substances 0.000 claims abstract description 109
- 239000000446 fuel Substances 0.000 claims description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 41
- 229910052799 carbon Inorganic materials 0.000 claims description 41
- 239000013256 coordination polymer Substances 0.000 claims description 20
- 230000003993 interaction Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 1
- 239000002283 diesel fuel Substances 0.000 description 27
- 238000007254 oxidation reaction Methods 0.000 description 26
- 230000003647 oxidation Effects 0.000 description 25
- 230000008021 deposition Effects 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Classifications
-
- 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
- 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
- F01N3/025—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 using fuel burner or by adding fuel to exhaust
- F01N3/0253—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
-
- 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
- F01N3/025—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 using fuel burner or by adding fuel to exhaust
- F01N3/0253—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
- F01N3/0256—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases the fuel being ignited by electrical means
-
- 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
Landscapes
- 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)
- Exhaust Gas After Treatment (AREA)
Abstract
The application provides a control method, a control device, a readable storage medium and a vehicle for parking regeneration, wherein the control method comprises the following steps: determining whether the engine is in a cold start state in a case where the parking regeneration request information is received; under the condition that the engine is in a cold starting state, controlling the combustor to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises the steps that an oil nozzle injects oil according to a first oil injection quantity and a spark plug ignites; and under the condition that the engine is not in a cold starting state, controlling the burner to work in a second working mode until the exhaust temperature reaches a second preset temperature value, wherein the second working mode comprises the step that an oil nozzle performs oil injection according to a second oil injection quantity and the step that a spark plug performs intermittent ignition, so that the problem that the speed for increasing the exhaust temperature of the engine is slow when parking regeneration is performed in the prior art is solved.
Description
Technical Field
The present disclosure relates to the field of parking regeneration, and more particularly, to a control method, a control device, a computer-readable storage medium, and a vehicle for parking regeneration.
Background
The emission standard of the motor vehicle pollutants in the sixth stage of the country (called the six-country standard for short) and the emission standard of the four-engine of the non-road country (called the four-non standard for short) have stricter limits on the emission of the particulate matters. The DPF (diesel particulate Filter, abbreviated as DPF) is an effective means for solving the problem of particulate matters in the diesel engine, and can ensure that the particulate matter emission of the diesel vehicle is maintained at a low level, thereby meeting the national six standards and non-four standards.
In practical applications, exhaust gas temperature of the engine needs to be raised through exhaust gas thermal management so as to regenerate the DPF. In the prior art, the technology of hydrocarbon injection is an exhaust gas heat management technology. Specifically, a hydrocarbon injection system is installed in front of a Diesel Oxidation Catalyst (DOC) to inject Diesel oil, so that the Diesel oil is catalytically oxidized in the DOC to release heat to raise the exhaust temperature. However, the above method has a problem that raising the exhaust gas temperature of the engine is slow.
Therefore, a method for rapidly increasing the exhaust temperature of the engine so as to complete the parking regeneration of the vehicle is needed.
Disclosure of Invention
The present disclosure provides a control method, a control device, a computer readable storage medium and a vehicle for parking regeneration, so as to solve the problem in the prior art that the speed of raising the exhaust temperature of an engine is slow when parking regeneration is performed.
According to an aspect of an embodiment of the present invention, there is provided a control method of parking regeneration, including: determining whether the engine is in a cold start state in a case where the parking regeneration request information is received; under the condition that the engine is in the cold starting state, controlling a burner to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises that an oil nozzle injects oil with a first oil injection quantity and a spark plug ignites, the first oil injection quantity is determined at least based on the first preset temperature value, and the burner is positioned between an exhaust pipeline and a DOC (diesel engine control) of the engine; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value, wherein the second working mode comprises that the oil nozzle injects oil by a second injection quantity and the spark plug performs intermittent ignition, the second injection quantity is determined at least based on the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
Optionally, in the case that the engine is in the cold start state, controlling a burner to operate in a first operation mode until after the exhaust temperature of the engine reaches a first preset temperature value, the control method further includes: and controlling the combustor to work in the second working mode until the exhaust temperature reaches the second preset temperature value.
Optionally, after controlling the combustor to operate in the second operation mode until the exhaust temperature reaches a second preset temperature value, the control method further comprises: controlling the burner to operate in a third operating mode, wherein the third operating mode includes the injector injecting fuel at a third injection amount and the spark plug not igniting, the third injection amount being determined based on at least the specific heat capacity of the DOC inlet exhaust, the exhaust mass flow, the DPF inlet temperature, and the DOC carrier inlet temperature.
Optionally, after controlling the combustor to operate in the third operating mode, the control method further comprises: determining whether a current carbon load value within the DPF is less than a preset carbon load threshold; controlling the engine to exit a parked regeneration state when the current carbon loading value in the DPF is less than the preset carbon loading threshold value; controlling the burner to continue operating in the third operating mode if the current carbon loading value within the DPF is greater than or equal to the preset carbon loading threshold.
Optionally, the first fuel injection quantity is calculated by (T) Setting 1 -T out )×CP EG,in ×m EG Wherein, T Setting 1 Is the first preset temperature value, T out For DPF inlet temperature, CP EG,in Is the specific heat capacity of DOC inlet exhaust gas, m EG Is the exhaust gas mass flow; the calculation method of the second fuel injection quantity is (T) Setting 2 -T out )×CP EG,in ×m EG Wherein, T Setting 2 Is the second preset temperature value.
Optionally, the third fuel injection quantity is calculated by a CP method EG,in ×m EG ×(T out -T in )-KA×(T dem -T in ) Wherein, CP EG,in Is the specific heat capacity of the DOC inlet exhaust gas, m EG For the exhaust gas mass flow, T out Is DPF inlet temperature, T in Is said DOC carrier inlet temperature, T dem And KA is the DOC and external heat interaction coefficient.
Optionally, the spark plug intermittently ignites: and when the oil injection nozzle injects oil for a plurality of times continuously at the second injection quantity, the spark plug ignites at preset intervals.
According to another aspect of an embodiment of the present invention, there is also provided a control device for parking regeneration, including: a receiving unit for determining whether the engine is in a cold start state in a case where the parking regeneration request information is received; the first control unit is used for controlling a combustor to work in a first working mode under the condition that the engine is in the cold starting state until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises the steps that an oil nozzle injects oil by a first injection quantity and a spark plug ignites, the first injection quantity is determined at least based on the first preset temperature value, and the combustor is positioned between an exhaust pipeline and a DOC of the engine; the first control unit is used for controlling the combustor to work in a second working mode under the condition that the engine is not in the cold starting state until the exhaust temperature reaches a second preset temperature value, wherein the second working mode comprises the step that the oil nozzle injects oil by a second oil injection quantity and the spark plug performs intermittent ignition, the second oil injection quantity is determined at least based on the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
According to still another aspect of an embodiment of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program, when executed by a processor, implements any one of the control methods of parking regeneration.
According to still another aspect of the embodiments of the present invention, there is also provided a vehicle including: an engine; a DOC; a burner located between an exhaust line of the engine and a DOC; a DPF located after the DOC; an electronic control unit for controlling the engine, the electronic control unit further being configured to execute any one of the control methods for parking regeneration.
In the embodiment of the invention, in the parking regeneration control method, under the condition that parking regeneration request information is received, whether an engine is in a cold start state or not is determined, and an operation mode of a combustor is determined according to a determination result, namely under the condition that the engine is in the cold start state, the combustor is controlled to operate in a first operation mode until the exhaust temperature of the engine reaches a first preset temperature value; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value. In the control method, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be rapidly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second injection quantity and the spark plug ignites intermittently, because the engine is not in the cold start state, namely the exhaust of the engine has certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that the efficiency of regeneration parking is higher, and the problem that the speed of improving the exhaust temperature of the engine is lower when the engine is parked and regenerated in the prior art is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments and illustrations of the application are intended to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a flowchart of a control method of parking regeneration of an embodiment of the present application;
FIG. 2 is a schematic structural view showing a positional relationship of a burner according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating whether to exit a park regeneration state according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a control device for parking regeneration according to an embodiment of the present application;
fig. 5 is a schematic structural diagram showing a control apparatus for parking regeneration according to another embodiment of the present application;
fig. 6 shows a flowchart of a regeneration control method according to a specific embodiment of the present application.
Wherein the figures include the following reference numerals:
10. a receiving unit; 20. a first control unit; 30. a second control unit; 40. a determination unit; 50. a fifth control unit; 60. a sixth control unit; 100. an exhaust line of the engine; 101. a burner; 102. a DOC; 103. a DPF; 104. and (6) SCR.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. 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.
As mentioned in the background of the invention, in order to solve the above problem, in the prior art, when performing the parking regeneration, the speed of raising the exhaust temperature of the engine is slow, and in an exemplary embodiment of the present application, a control method, a control device, a computer readable storage medium and a vehicle for the parking regeneration are provided.
According to an embodiment of the present application, a control method of parking regeneration is provided.
Fig. 1 is a flowchart of a control method of parking regeneration according to an embodiment of the present application. The control method described above may be applied to an electronic control unit, as shown in fig. 1, the control method including the steps of:
step S101, under the condition that parking regeneration request information is received, determining whether the engine is in a cold starting state;
step S102, under the condition that the engine is in the cold start state, controlling a burner to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises that an oil nozzle injects oil by a first injected oil quantity and a spark plug ignites, the first injected oil quantity is determined at least based on the first preset temperature value, and the burner is positioned between an exhaust pipeline and a DOC of the engine;
step S103, under the condition that the engine is not in the cold start state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value, where the second working mode includes the oil injection by the oil injector with a second oil injection amount and the intermittent ignition by the spark plug, the second oil injection amount is determined based on at least the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
In the method for controlling the parking regeneration, when parking regeneration request information is received, whether the engine is in a cold start state or not is determined, and the working mode of the combustor is determined according to the determination result, namely, when the engine is in the cold start state, the combustor is controlled to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value. In the control method, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be rapidly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second injection quantity and the spark plug ignites intermittently, because the engine is not in the cold start state, namely the exhaust of the engine has certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by oxidation of diesel oil by the DOC is less, so that the efficiency of regeneration parking is higher, and the problem that the speed of improving the exhaust temperature of the engine is lower when the engine is parked and regenerated in the prior art is solved.
In one specific embodiment of the present application, the first preset temperature value may be 250 ℃. Of course, the first preset temperature value is not limited to 250 ℃, and can be flexibly adjusted according to the actual condition of the engine. The second preset temperature value may be 500 ℃. Of course, the second preset temperature value is not limited to 500 ℃, and can be flexibly adjusted according to the actual condition of the engine.
The application discloses a control method for parking regeneration and the prior art, the hydrocarbon injection system is installed in front of the DOC to inject diesel oil, so that the diesel oil is subjected to catalytic oxidation in the DOC to release heat to improve the exhaust temperature, and the control method only needs to arrange a burner between an exhaust pipeline of an engine and the DOC to improve the exhaust temperature of the engine, so that the exhaust system is simpler in structure, and the cost is reduced.
In addition, in the control method for parking regeneration, the first fuel injection quantity is determined based on the first preset temperature value, that is, the first fuel injection quantity is determined according to the temperature to be reached by the exhaust gas of the engine, so that the exhaust gas temperature of the engine can be ensured to be rapidly increased to the first preset temperature value, the diesel oil consumption of the engine is ensured to be less, and the economic price of the engine is high. The second fuel injection quantity is determined based on the second preset temperature value, namely, the second fuel injection quantity is determined according to the temperature to be reached by the exhaust of the engine, so that the exhaust temperature of the engine can be rapidly increased to the second preset temperature value, the diesel oil consumption of the engine is less, and the economic price of the engine is high.
In one particular embodiment of the present application, as shown in FIG. 2, the burner 101 is located between the exhaust line 100 of the engine and the DOC102, and the DPF103 is located between the DOC102 and the SCR104 (Selective Catalytic Reduction, SCR).
In another specific embodiment of the present application, the burner is controlled to operate in the second operating mode in case the current exhaust temperature of the engine has reached the first preset temperature value, until the exhaust temperature of the engine reaches the second preset temperature value.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
In an embodiment of the present application, in a case where the engine is in the cold start state, the control method further includes controlling a burner to operate in a first operation mode until an exhaust temperature of the engine reaches a first preset temperature value: and controlling the combustor to work in the second working mode until the exhaust temperature reaches the second preset temperature value. In this embodiment, after the exhaust temperature of the engine reaches the first preset temperature value, the burner is controlled to operate in the second operation mode, so that the DOC oxidizes the diesel oil and the injected diesel oil jointly provides hot gas, so that the exhaust temperature of the engine is increased to the second preset temperature value relatively quickly. Because the spark plug is ignited intermittently, the carbon deposit generated by burning diesel oil again can be reduced, and the parking regeneration efficiency of the engine is further ensured to be higher.
In order to further reduce carbon deposition generated by the ignition of diesel oil by the spark plug and further ensure high efficiency of parking regeneration, in another embodiment of the present application, after controlling the burner to operate in the second operation mode until the exhaust temperature reaches a second preset temperature value, the control method further includes: and controlling the burner to work in a third working mode, wherein the third working mode comprises that the oil nozzle injects oil with a third oil injection quantity and the spark plug does not ignite, and the third oil injection quantity is at least determined based on the specific heat capacity of the DOC inlet exhaust gas, the exhaust gas mass flow, the DPF inlet temperature and the DOC carrier inlet temperature.
Specifically, in the above embodiment, the third fuel injection amount is determined at least based on the specific heat capacity of the DOC inlet exhaust gas, the exhaust gas mass flow, the DPF inlet temperature, and the DOC carrier inlet temperature, and since all the temperatures are considered, it is ensured that the determined third fuel injection amount is reasonable, the fuel consumption of the engine is further ensured to be low, and the economy is high.
In another embodiment of the present application, as shown in fig. 3, after controlling the burner to operate in the third operation mode, the control method further includes: determining whether the current carbon loading value in the DPF is less than a preset carbon loading threshold value; controlling the engine to exit a parked regeneration state when the current carbon load value in the DPF is less than the preset carbon load threshold value; and under the condition that the current carbon loading value in the DPF is greater than or equal to the preset carbon loading threshold value, controlling the combustor to continuously work in the third working mode, so that parking regeneration can be completed quickly, and the user experience is better.
In a specific embodiment of the present application, the first fuel injection quantity is calculated by (T) Setting 1 -T out )×CP EG,in ×m EG Wherein, T Setting 1 For the above-mentioned first predetermined temperature value, T out For DPF inlet temperature, CP EG,in Is the specific heat capacity of DOC inlet exhaust gas, m EG Is the exhaust gas mass flow;the second fuel injection quantity is calculated by the method (T) Setting 2 -T out )×CP EG,in ×m EG Wherein, T Setting 2 The second preset temperature value is obtained.
In another specific embodiment of the present application, the third fuel injection amount is calculated by CP EG,in ×m EG ×(T out -T in )-KA×(T dem -T in ) Wherein, CP EG,in M is the specific heat capacity of the DOC inlet exhaust gas EG For the above-mentioned exhaust gas mass flow, T out Is DPF inlet temperature, T in Is the DOC carrier inlet temperature, T dem And KA is DOC and the external heat interaction coefficient.
In another embodiment of the present application, when the burner operates in the second operation mode, since the exhaust gas of the engine has a certain temperature, in this case, the DOC can oxidize the diesel oil through the existing exhaust temperature of the engine, so as to further ensure that the efficiency of the parking regeneration is high, the ignition plug performs intermittent ignition: the ignition plug ignites at predetermined intervals while the injection nozzle injects the fuel at the second injection quantity a plurality of times in succession.
Specifically, the predetermined interval may be flexibly adjusted according to the actual condition of the engine, which is not limited in this application.
In one embodiment of the present application, the spark plug may be configured to ignite when a fuel injector of the combustor injects fuel. The intermittent ignition of the spark plug can be that the spark is ignited when the oil nozzle of the burner injects oil for the first time, the spark plug is not ignited when the oil nozzle injects oil for the second time, the spark is ignited when the oil nozzle injects oil for the third time, the spark plug is not ignited when the oil nozzle injects oil for the fourth time, and so on. Of course, the spark plug may also be fired after two consecutive injections by the injector. That is, the size of the predetermined interval is not limited in the present application, and can be flexibly adjusted according to the actual exhaust temperature of the engine.
The embodiment of the present application further provides a control device for parking regeneration, and it should be noted that the control device for parking regeneration according to the embodiment of the present application may be used to execute the control method for parking regeneration provided in the embodiment of the present application. The following describes a control device for parking regeneration according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a control device for parking regeneration according to an embodiment of the present application. The control device described above may be applied to an electronic control unit, as shown in fig. 4, the control device including:
a receiving unit 10 for determining whether the engine is in a cold start state in a case where the parking regeneration request information is received;
a first control unit 20, configured to control a burner to operate in a first operating mode when the engine is in the cold start state until an exhaust temperature of the engine reaches a first preset temperature value, wherein the first operating mode includes an injection of an injection from an injection nozzle by a first injection amount determined at least based on the first preset temperature value and an ignition of a spark plug, and the burner is located between an exhaust line and a DOC of the engine;
a second control unit 30, configured to control the burner to operate in a second operation mode when the engine is not in the cold start state until the exhaust temperature reaches a second preset temperature value, where the second operation mode includes injecting fuel by the fuel injector with a second fuel injection amount and intermittently igniting the spark plug, the second fuel injection amount is determined based on at least the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
In the above control device for parking regeneration, the receiving unit is configured to determine whether the engine is in a cold start state in a case where the parking regeneration request information is received; the first control unit is used for controlling the combustor to work in a first working mode under the condition that the engine is in a cold starting state until the exhaust temperature of the engine reaches a first preset temperature value; the second control unit is used for controlling the combustor to work in a second working mode under the condition that the engine is not in the cold starting state until the exhaust temperature reaches a second preset temperature value. In the control device, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be quickly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second oil injection amount and the spark plug ignites intermittently, because the engine is not in the cold start state, namely exhaust of the engine has a certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that parking regeneration efficiency is high, and the problem that the exhaust temperature of the engine is slow when parking regeneration is performed in the prior art is solved.
In one specific embodiment of the present application, the first preset temperature value may be 250 ℃. Of course, the first preset temperature value is not limited to 250 ℃, and can be flexibly adjusted according to the actual condition of the engine. The second preset temperature value may be 500 ℃. Of course, the second preset temperature value is not limited to 500 ℃, and can be flexibly adjusted according to the actual condition of the engine.
Compared with the prior art, the control method executed by the parking regeneration control device has the advantages that the hydrocarbon injection system is installed in front of the DOC to inject diesel oil, and the diesel oil is subjected to catalytic oxidation in the DOC to release heat to improve the exhaust temperature.
In addition, in the control device for parking regeneration, the first fuel injection quantity is determined based on the first preset temperature value, namely, the first fuel injection quantity is determined according to the temperature to be reached by the exhaust of the engine, so that the exhaust temperature of the engine can be rapidly increased to the first preset temperature value, the diesel oil consumption of the engine is less, and the economic price of the engine is high. The second fuel injection quantity is determined based on the second preset temperature value, namely, the second fuel injection quantity is determined according to the temperature to be reached by the exhaust of the engine, so that the exhaust temperature of the engine can be rapidly increased to the second preset temperature value, the diesel oil consumption of the engine is less, and the economic price of the engine is high.
In one specific embodiment of the present application, as shown in fig. 2, the burner 101 is located between the exhaust line 100 of the engine and the DOC102, and the DPF103 is located between the DOC102 and the SCR104 (Selective Catalytic Reduction).
In another specific embodiment of the present application, the burner is controlled to operate in the second operating mode in case the current exhaust temperature of the engine has reached the first preset temperature value, until the exhaust temperature of the engine reaches the second preset temperature value.
In an embodiment of the present application, the control apparatus further includes a third control unit, configured to control a burner to operate in a first operation mode when the engine is in the cold start state, and control the burner to operate in the second operation mode until the exhaust temperature of the engine reaches the second preset temperature value after the exhaust temperature of the engine reaches the first preset temperature value. In this embodiment, after the exhaust temperature of the engine reaches the first preset temperature value, the burner is controlled to operate in the second operation mode, so that the DOC oxidizes the diesel oil and the injected diesel oil jointly provides hot gas, so that the exhaust temperature of the engine is increased to the second preset temperature value relatively quickly. Because the spark plug is ignited intermittently, the carbon deposit generated by burning diesel oil again can be reduced, and the parking regeneration efficiency of the engine is further ensured to be higher.
In order to further reduce the carbon deposition generated by the ignition of the diesel fuel by the spark plug and further ensure high efficiency of the parking regeneration, in another embodiment of the present application, the control device further includes a fourth control unit, configured to control the burner to operate in a third operation mode after controlling the burner to operate in the second operation mode until the exhaust temperature reaches a second preset temperature value, where the third operation mode includes that the oil nozzle injects oil with a third injection quantity and the spark plug does not ignite, and the third injection quantity is determined based on at least the specific heat capacity of the DOC inlet exhaust gas, the exhaust mass flow, the DPF inlet temperature, and the DOC carrier inlet temperature.
Specifically, in the above embodiment, the third fuel injection amount is determined at least based on the specific heat capacity of the DOC inlet exhaust gas, the exhaust gas mass flow, the DPF inlet temperature, and the DOC carrier inlet temperature, and since all the temperatures are considered, it is ensured that the determined third fuel injection amount is reasonable, the fuel consumption of the engine is further ensured to be low, and the economy is high.
In still another embodiment of the present application, as shown in fig. 5, the control apparatus further comprises a determining unit 40, a fifth control unit 50 and a sixth control unit 60, wherein the determining unit 40 is configured to determine whether a current carbon loading value in the DPF is less than a preset carbon loading threshold value after controlling the burner to operate in the third operation mode; the fifth control means 50 is configured to control the engine to exit the parked regeneration state when the current value of the amount of carbon loaded in the DPF is smaller than the preset threshold value of the amount of carbon loaded; the sixth control unit 60 is configured to control the burner to continue to operate in the third operating mode when the current carbon loading value in the DPF is greater than or equal to the preset carbon loading threshold, so that the parking regeneration can be completed relatively quickly, and the user experience is guaranteed to be good.
In a specific embodiment of the present application, the first fuel injection amount is calculated by (T) Setting 1 -T out )×CP EG,in ×m EG Wherein, T Setting 1 For the above-mentioned first preset temperature value, T out For DPF inlet temperature, CP EG,in Is the specific heat capacity of DOC inlet exhaust gas, m EG Is the exhaust gas mass flow; the second fuel injection quantity is calculated by the method (T) Setting 2 -T out )×CP EG,in ×m EG Wherein, T Setting 2 The second preset temperature value is obtained.
In another specific embodiment of the present application, the third fuel injection amount is calculated by CP EG,in ×m EG ×(T out -T in )-KA×(T dem -T in ) Wherein, CP EG,in M is the specific heat capacity of the DOC inlet exhaust gas EG For the above-mentioned exhaust gas mass flow, T out Is DPF inlet temperature, T in Is the DOC carrier inlet temperature, T, mentioned above dem And KA is the DOC and external heat interaction coefficient.
In another embodiment of the present application, when the burner operates in the second operation mode, since the exhaust gas of the engine has a certain temperature, in this case, the DOC can oxidize the diesel oil through the existing exhaust temperature of the engine, so as to further ensure that the efficiency of the parking regeneration is high, the ignition plug performs intermittent ignition: the ignition plug ignites at predetermined intervals while the injection nozzle injects the fuel at the second injection quantity a plurality of times in succession.
Specifically, the predetermined interval may be flexibly adjusted according to the actual condition of the engine, which is not limited in this application.
In one embodiment of the present application, the spark plug may be configured to ignite when a fuel injector of the combustor injects fuel. The intermittent ignition of the spark plug can be spark ignition when an oil nozzle of the burner injects oil for the first time, the spark plug does not ignite when the oil nozzle injects oil for the second time, the spark plug ignites when the oil nozzle injects oil for the third time, the spark plug does not ignite when the oil nozzle injects oil for the fourth time, and the like. Of course, the spark plug may also be fired after two consecutive injections by the injector. That is, the size of the predetermined interval is not limited in the present application, and can be flexibly adjusted according to the actual exhaust temperature of the engine.
The parking regeneration control device comprises a processor and a memory, wherein the receiving unit, the first control unit, the second control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that the exhaust temperature of the engine is slowly increased when parking regeneration is carried out in the prior art is solved by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), including at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium having a program stored thereon, the program implementing the above-described control method of parking regeneration when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program is used for executing the parking regeneration control method when running.
In an exemplary embodiment of the present application, there is also provided a vehicle comprising an engine, a DOC, a burner, a DPF, and an electronic control unit, wherein the burner is located between an exhaust line of the engine and the DOC; said DPF is located after said DOC; the electronic control unit is used for controlling the engine, and the electronic control unit is also used for executing any one of the control methods for parking regeneration.
The vehicle comprises the electronic control unit, and the electronic control unit is further used for executing any one of the control methods for parking regeneration. In the control method, under the condition that parking regeneration request information is received, whether the engine is in a cold start state or not is determined, and the working mode of the combustor is determined according to the determination result, namely under the condition that the engine is in the cold start state, the combustor is controlled to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value. In the control method, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely the oil injection nozzle of the combustor injects oil with a first oil injection quantity and the spark plug ignites, so that the exhaust temperature of the engine can be rapidly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second oil injection amount and the spark plug ignites intermittently, because the engine is not in the cold start state, namely exhaust of the engine has a certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that parking regeneration efficiency is high, and the problem that the speed of increasing the exhaust temperature of the engine is low when parking regeneration is performed in the prior art is solved.
An embodiment of the present invention provides an apparatus, where the apparatus includes a processor, a memory, and a program that is stored in the memory and is executable on the processor, and when the processor executes the program, at least the following steps are implemented:
step S101, under the condition that parking regeneration request information is received, determining whether the engine is in a cold starting state;
step S102, under the condition that the engine is in the cold starting state, controlling a burner to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises that an oil nozzle injects oil by a first oil injection quantity and a spark plug ignites, the first oil injection quantity is determined at least based on the first preset temperature value, and the burner is positioned between an exhaust pipeline and a DOC of the engine;
step S103, under the condition that the engine is not in the cold start state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value, where the second working mode includes the oil injection by the oil injector with a second oil injection amount and the intermittent ignition by the spark plug, the second oil injection amount is determined based on at least the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, under the condition that parking regeneration request information is received, determining whether the engine is in a cold starting state;
step S102, under the condition that the engine is in the cold start state, controlling a burner to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises that an oil nozzle injects oil by a first injected oil quantity and a spark plug ignites, the first injected oil quantity is determined at least based on the first preset temperature value, and the burner is positioned between an exhaust pipeline and a DOC of the engine;
step S103, when the engine is not in the cold start state, controlling the burner to operate in a second operation mode until the exhaust temperature reaches a second preset temperature value, where the second operation mode includes the fuel injection from the fuel injector with a second fuel injection amount and the intermittent ignition from the spark plug, the second fuel injection amount is determined based on at least the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions and technical effects of the present application will be described below with reference to specific embodiments.
Examples
The present embodiment relates to a control method of parking regeneration, as shown in fig. 6. In the case where the parking regeneration request information is received, it is determined whether the engine is in a cold start state. And if the engine is in a cold starting state, controlling the combustor to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value. Namely, the fuel injection nozzle of the burner injects fuel with the first fuel injection quantity and the spark plug ignites, so that the exhaust temperature of the engine is rapidly increased. And under the condition that the engine is not in a cold starting state or the exhaust temperature of the engine reaches a first preset temperature value, controlling the combustor to work in a second working mode until the exhaust temperature of the engine reaches a second preset temperature value. I.e. the fuel injection nozzle of the burner injects fuel with the second injection quantity and the spark plug ignites intermittently. Since the exhaust gas of the engine has a certain temperature at this time, heat can be supplied by the oxidation reaction of the DOC and the ignition of the burner together. And under the condition that the exhaust temperature of the engine reaches a second preset temperature value, controlling the combustor to work in a third working mode, namely, an oil injection nozzle of the combustor injects oil with a third injection quantity and a spark plug does not ignite. Since the exhaust temperature of the engine has now reached the second predetermined temperature threshold, heat may be provided by oxidation of the DOC at this time. Finally, determining whether the current carbon loading value in the DPF is smaller than a preset carbon loading threshold value; controlling the engine to exit from a parking regeneration state under the condition that the current carbon loading value in the DPF is smaller than a preset carbon loading threshold value; and controlling the combustor to continuously work in the third working mode under the condition that the current carbon load value in the DPF is greater than or equal to the preset carbon load threshold value.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) 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), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) In the parking regeneration control method, whether the engine is in a cold start state or not is determined under the condition that parking regeneration request information is received, and the working mode of the combustor is determined according to the determination result, namely the combustor is controlled to work in a first working mode under the condition that the engine is in the cold start state until the exhaust temperature of the engine reaches a first preset temperature value; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value. In the control method, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be rapidly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second injection quantity and the spark plug ignites intermittently, because the engine is not in the cold start state, namely the exhaust of the engine has certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that the efficiency of regeneration parking is higher, and the problem that the speed of improving the exhaust temperature of the engine is lower when the engine is parked and regenerated in the prior art is solved.
2) In the parking regeneration control device, the receiving unit is used for determining whether the engine is in a cold starting state or not under the condition of receiving the parking regeneration request information; the first control unit is used for controlling the combustor to work in a first working mode under the condition that the engine is in a cold starting state until the exhaust temperature of the engine reaches a first preset temperature value; the second control unit is used for controlling the combustor to work in a second working mode under the condition that the engine is not in the cold starting state until the exhaust temperature reaches a second preset temperature value. In the control device, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be quickly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second injection quantity and the spark plug ignites intermittently, because the engine is not in the cold start state, namely the exhaust of the engine has certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that the efficiency of regeneration parking is higher, and the problem that the exhaust temperature of the engine is slower when the engine is parked and regenerated in the prior art is solved.
3) The vehicle of the present application includes the electronic control unit described above, and the electronic control unit is further configured to execute any one of the control methods for parking regeneration described above. In the control method, under the condition that parking regeneration request information is received, whether the engine is in a cold start state or not is determined, and the working mode of the combustor is determined according to the determination result, namely under the condition that the engine is in the cold start state, the combustor is controlled to work in a first working mode until the exhaust temperature of the engine reaches a first preset temperature value; and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value. In the control method, under the condition that the engine is in a cold start state, the combustor is controlled to work in a first working mode, namely an oil injection nozzle of the combustor injects oil with a first injection quantity and a spark plug ignites, so that the exhaust temperature of the engine can be rapidly increased to a first preset temperature value. Under the condition that the engine is not in a cold start state, the combustor is controlled to work in a second working mode, namely an oil nozzle of the combustor injects oil in a second oil injection amount and the spark plug ignites intermittently, because the engine is not in the cold start state, namely exhaust of the engine has a certain temperature, the spark plug ignites intermittently at the moment, the exhaust temperature of the engine can quickly reach a second preset temperature value through Oxidation of a Diesel Oxidation Catalyst (DOC) and ignition of the spark plug, and carbon deposition generated by Oxidation of Diesel oil by the DOC is less, so that parking regeneration efficiency is high, and the problem that the speed of increasing the exhaust temperature of the engine is low when parking regeneration is performed in the prior art is solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A control method of parking regeneration, characterized by comprising:
determining whether the engine is in a cold start state in a case where the parking regeneration request information is received;
controlling a burner to work in a first working mode under the condition that the engine is in the cold starting state until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises the step that an oil nozzle injects oil with a first injection quantity and a spark plug ignites, the first injection quantity is determined at least based on the first preset temperature value, and the burner is positioned between an exhaust pipeline and a DOC of the engine;
and under the condition that the engine is not in the cold starting state, controlling the combustor to work in a second working mode until the exhaust temperature reaches a second preset temperature value, wherein the second working mode comprises that the oil nozzle injects oil by a second injection quantity and the spark plug performs intermittent ignition, the second injection quantity is determined at least based on the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
2. The control method according to claim 1, characterized in that, with the engine in the cold start state, a burner is controlled to operate in a first operating mode until after the exhaust temperature of the engine reaches a first preset temperature value, the control method further comprising:
and controlling the combustor to work in the second working mode until the exhaust temperature reaches the second preset temperature value.
3. The control method according to claim 1 or 2, characterized in that after controlling the burner to operate in the second operation mode until the exhaust gas temperature reaches a second preset temperature value, the control method further comprises:
controlling the burner to operate in a third mode of operation, wherein the third mode of operation includes the injector injecting fuel at a third injection rate and the spark plug not firing, the third injection rate being determined based on at least the specific heat capacity of the DOC inlet exhaust, the exhaust mass flow rate, the DPF inlet temperature, and the DOC carrier inlet temperature.
4. The control method of claim 3, wherein after controlling the combustor to operate in a third operating mode, the control method further comprises:
determining whether the current carbon loading value in the DPF is less than a preset carbon loading threshold value;
controlling the engine to exit a park regeneration state if the current carbon load value within the DPF is less than the preset carbon load threshold;
controlling the burner to continue operating in the third operating mode if the current carbon loading value within the DPF is greater than or equal to the preset carbon loading threshold.
5. The control method according to claim 1,
the calculation method of the first fuel injection quantity is (T) Setting 1 -T out )×CP EG,in ×m EG Wherein, T Setting 1 Is the first preset temperature value, T out For DPF inlet temperature, CP EG,in Is the specific heat capacity of DOC inlet exhaust gas, m EG Is the exhaust gas mass flow;
the calculation method of the second fuel injection quantity is (T) Setting 2 -T out )×CP EG,in ×m EG Wherein, T Setting 2 Is the second preset temperature value.
6. The control method of claim 3, wherein the third injection quantity is calculated as CP EG,in ×m EG ×(T out -T in )-KA×(T dem -T in ) Wherein, CP EG,in Is the specific heat capacity of the DOC inlet exhaust gas, m EG For the exhaust gas mass flow, T out Is DPF inlet temperature, T in Is the DOC carrier inlet temperature, T dem And KA is the DOC and external heat interaction coefficient.
7. The control method according to claim 1, wherein the intermittent ignition by the ignition plug is: and when the oil injection nozzle injects oil for a plurality of times continuously at the second injection quantity, the spark plug ignites at preset intervals.
8. A control device for parking regeneration, characterized by comprising:
a receiving unit for determining whether the engine is in a cold start state in a case where the parking regeneration request information is received;
the first control unit is used for controlling a combustor to work in a first working mode under the condition that the engine is in the cold starting state until the exhaust temperature of the engine reaches a first preset temperature value, wherein the first working mode comprises the steps that an oil nozzle injects oil by a first injection quantity and a spark plug ignites, the first injection quantity is determined at least based on the first preset temperature value, and the combustor is positioned between an exhaust pipeline and a DOC of the engine;
and the second control unit is used for controlling the combustor to work in a second working mode under the condition that the engine is not in the cold starting state until the exhaust temperature reaches a second preset temperature value, wherein the second working mode comprises the step that the oil nozzle injects oil by a second oil injection quantity and the spark plug performs intermittent ignition, the second oil injection quantity is determined at least based on the second preset temperature value, and the first preset temperature value is smaller than the second preset temperature value.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein the program, when executed by a processor, implements the control method for parking regeneration of any one of claims 1 to 7.
10. A vehicle, characterized by comprising:
an engine;
DOC；
a burner located between an exhaust line of the engine and a DOC;
a DPF located after the DOC;
an electronic control unit for controlling the engine, the electronic control unit being further configured to execute the control method for parking regeneration of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211167038.9A CN115355077B (en) | 2022-09-23 | 2022-09-23 | Control method and control device for parking regeneration, readable storage medium and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211167038.9A CN115355077B (en) | 2022-09-23 | 2022-09-23 | Control method and control device for parking regeneration, readable storage medium and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115355077A true CN115355077A (en) | 2022-11-18 |
| CN115355077B CN115355077B (en) | 2024-04-16 |
Family
ID=84006200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211167038.9A Active CN115355077B (en) | 2022-09-23 | 2022-09-23 | Control method and control device for parking regeneration, readable storage medium and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115355077B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532030A1 (en) * | 1991-09-12 | 1993-03-17 | Firma J. Eberspächer | Device for removing particles out of the exhaust gases of diesel engines |
| DE4242095A1 (en) * | 1992-12-14 | 1994-06-16 | Kloeckner Humboldt Deutz Ag | Particle filter system for reducing diesel engine exhaust emissions - with regeneration burner allowing heating of particle filter at low exhaust gas temps |
| JP2005281020A (en) * | 2004-03-29 | 2005-10-13 | Honda Motor Co Ltd | Method for initializing hydrogen-gas manufacturing system |
| DE102008032600A1 (en) * | 2008-07-11 | 2010-01-14 | Volkswagen Ag | Internal combustion engine's exhaust system operating method for motor vehicle, involves transmitting parts of fuel quantity supplied to burner into respective reaction zones of burner when operating burner with combustion air ratio |
| DE102008032601A1 (en) * | 2008-07-11 | 2010-01-14 | Volkswagen Ag | Exhaust gas flow condition adjusting method for e.g. diesel engine, of motor vehicle, involves supplying secondary air mass flow to burner, where burner lambda value produced from injection amount and mass flow amounts to less than one |
| EP2146063A2 (en) * | 2008-07-15 | 2010-01-20 | Friedrich Boysen GmbH & Co. KG | Regeneration device |
| JP2013002314A (en) * | 2011-06-14 | 2013-01-07 | Hino Motors Ltd | Exhaust emission control device |
| US20140363358A1 (en) * | 2011-12-23 | 2014-12-11 | Volvo Lastvagnar Ab | Exhaust aftertreatment system and method for operating the system |
| JP2016223367A (en) * | 2015-05-29 | 2016-12-28 | 三菱重工業株式会社 | Regeneration control device of exhaust gas treatment device |
| WO2019030315A1 (en) * | 2017-08-10 | 2019-02-14 | Volkswagen Ag | System and method for exhaust gas aftertreatment of an internal combustion engine |
| CN113227547A (en) * | 2019-02-06 | 2021-08-06 | 大众汽车股份公司 | Exhaust gas aftertreatment system and exhaust gas aftertreatment method for internal combustion engine |
| US20220025797A1 (en) * | 2019-07-26 | 2022-01-27 | J.C. Bamford Excavators Limited | System for working machine |
| CN114017169A (en) * | 2022-01-05 | 2022-02-08 | 潍柴动力股份有限公司 | DPF regeneration control method and device and engine |
| CN114233438A (en) * | 2021-12-22 | 2022-03-25 | 凯龙高科技股份有限公司 | Diesel engine tail gas after-treatment method and device |
| CN114645789A (en) * | 2021-05-06 | 2022-06-21 | 长城汽车股份有限公司 | EGR control method, EGR control device, vehicle, storage medium and electronic device |
-
2022
- 2022-09-23 CN CN202211167038.9A patent/CN115355077B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532030A1 (en) * | 1991-09-12 | 1993-03-17 | Firma J. Eberspächer | Device for removing particles out of the exhaust gases of diesel engines |
| DE4242095A1 (en) * | 1992-12-14 | 1994-06-16 | Kloeckner Humboldt Deutz Ag | Particle filter system for reducing diesel engine exhaust emissions - with regeneration burner allowing heating of particle filter at low exhaust gas temps |
| JP2005281020A (en) * | 2004-03-29 | 2005-10-13 | Honda Motor Co Ltd | Method for initializing hydrogen-gas manufacturing system |
| DE102008032600A1 (en) * | 2008-07-11 | 2010-01-14 | Volkswagen Ag | Internal combustion engine's exhaust system operating method for motor vehicle, involves transmitting parts of fuel quantity supplied to burner into respective reaction zones of burner when operating burner with combustion air ratio |
| DE102008032601A1 (en) * | 2008-07-11 | 2010-01-14 | Volkswagen Ag | Exhaust gas flow condition adjusting method for e.g. diesel engine, of motor vehicle, involves supplying secondary air mass flow to burner, where burner lambda value produced from injection amount and mass flow amounts to less than one |
| EP2146063A2 (en) * | 2008-07-15 | 2010-01-20 | Friedrich Boysen GmbH & Co. KG | Regeneration device |
| JP2013002314A (en) * | 2011-06-14 | 2013-01-07 | Hino Motors Ltd | Exhaust emission control device |
| US20140363358A1 (en) * | 2011-12-23 | 2014-12-11 | Volvo Lastvagnar Ab | Exhaust aftertreatment system and method for operating the system |
| JP2016223367A (en) * | 2015-05-29 | 2016-12-28 | 三菱重工業株式会社 | Regeneration control device of exhaust gas treatment device |
| WO2019030315A1 (en) * | 2017-08-10 | 2019-02-14 | Volkswagen Ag | System and method for exhaust gas aftertreatment of an internal combustion engine |
| CN113227547A (en) * | 2019-02-06 | 2021-08-06 | 大众汽车股份公司 | Exhaust gas aftertreatment system and exhaust gas aftertreatment method for internal combustion engine |
| US20220025797A1 (en) * | 2019-07-26 | 2022-01-27 | J.C. Bamford Excavators Limited | System for working machine |
| CN114645789A (en) * | 2021-05-06 | 2022-06-21 | 长城汽车股份有限公司 | EGR control method, EGR control device, vehicle, storage medium and electronic device |
| CN114233438A (en) * | 2021-12-22 | 2022-03-25 | 凯龙高科技股份有限公司 | Diesel engine tail gas after-treatment method and device |
| CN114017169A (en) * | 2022-01-05 | 2022-02-08 | 潍柴动力股份有限公司 | DPF regeneration control method and device and engine |
Non-Patent Citations (1)
| Title |
|---|
| 高奖鹏;陈荣锦;: "沥青就地热再生预热机燃烧器不喷油故障的排除", 工程机械与维修, no. 12, 15 December 2006 (2006-12-15), pages 147 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115355077B (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9528413B2 (en) | Synergistic SCR/DOC configurations for lowering diesel emissions | |
| JP3996606B2 (en) | Method of automatically starting regeneration of particulate filter of diesel engine by rail injection system | |
| CN101392678B (en) | Elevated exhaust temperature zoned electrically-heated particulate matter filter | |
| CN101392673B (en) | Heater insulation for electric heating particulate filter | |
| US20110016848A1 (en) | System and method for treating diesel exhaust gases | |
| CN102782272B (en) | Thermal enhancer and hydrocarbon doser | |
| CN111963285B (en) | DPF regeneration control method and device and electronic control unit | |
| CN114673599B (en) | Control method, control device and processor for parking regeneration of particle catcher | |
| CN107435575B (en) | Method for regenerating diesel particulate filter | |
| JP2007524029A (en) | Smoke incineration control method for diesel particulate filter with catalyst | |
| CN102877922A (en) | Method for operating a spark-ignition internal combustion engine with exhaust gas aftertreatment | |
| WO2013192211A1 (en) | Filter regeneration using filter temperature modulation | |
| CN112267946A (en) | DPF passive regeneration control method, device, equipment and storage medium | |
| US9027333B2 (en) | Soot pre-loading of particulate matter aftertreatment devices as means for reducing hydrocarbon emissions during cold start | |
| CN101392677B (en) | Zoned electrically-heated particulate matter filter for exhaust temperature elevating | |
| CN114233440B (en) | Urea double-injection aftertreatment system, control method thereof and vehicle | |
| CN115355077B (en) | Control method and control device for parking regeneration, readable storage medium and vehicle | |
| CN109578117B (en) | Recovery method and device for diesel oxidation catalyst | |
| CN102758668B (en) | Regeneration methods and systems for particulate filters | |
| CN114135366A (en) | Hydrocarbon injection module and exhaust aftertreatment system | |
| CN215680498U (en) | DPF aftertreatment switch for forklift | |
| CN112324539B (en) | Urea injection control method and urea injection control system | |
| KR20120033115A (en) | Exhaust gas purification system | |
| CN116181459A (en) | Control method for regeneration of diesel particulate filter in tail gas aftertreatment system | |
| CN116066216A (en) | Particle trap regeneration method, device, vehicle and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |