CN116480450A - Vehicle exhaust temperature control processing method, device, equipment and storage medium - Google Patents
Vehicle exhaust temperature control processing method, device, equipment and storage medium Download PDFInfo
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- CN116480450A CN116480450A CN202310456216.8A CN202310456216A CN116480450A CN 116480450 A CN116480450 A CN 116480450A CN 202310456216 A CN202310456216 A CN 202310456216A CN 116480450 A CN116480450 A CN 116480450A
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- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 66
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- 238000000034 method Methods 0.000 claims abstract description 41
- 239000000446 fuel Substances 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
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- 238000006243 chemical reaction Methods 0.000 abstract description 21
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
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Abstract
The invention discloses a vehicle tail gas temperature control processing method, device, equipment and storage medium. The method comprises the following steps: acquiring vehicle operation parameters of a target vehicle; determining vehicle working condition information corresponding to the target vehicle based on the vehicle running parameters; determining a target tail gas temperature required by the target vehicle when tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table; based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature, the tail gas of the target vehicle is subjected to temperature control treatment through the electric heating device, so that the tail gas temperature can be improved, the tail gas conversion efficiency is improved, and the fuel consumption and the pollutant gas emission are reduced.
Description
Technical Field
The present invention relates to the field of tail gas treatment technologies, and in particular, to a method, an apparatus, a device, and a storage medium for controlling and treating a vehicle tail gas temperature.
Background
As atmospheric environmental problems are increasingly aggravated, the exhaust gas treatment is of paramount importance, and therefore the conversion efficiency of the exhaust gas treatment becomes a focus of attention.
According to research, the exhaust gas temperature is increased to help to improve the exhaust gas conversion efficiency, and the currently used method mainly comprises the steps of using an air inlet and outlet throttle valve to reduce the air inlet amount, increasing the fuel post-injection, adjusting the opening of a supercharger bleed valve and the like.
However, the conventional air path actuator or oil path control method is used for improving the temperature discharge, so that the fuel consumption is sacrificed, the required temperature target is difficult to quickly reach due to the problem of response speed, and secondly, the temperature rising effect is not obvious in the vehicle starting and warming processes, the conversion effect is weakened, and the pollutant gas emission is increased.
Disclosure of Invention
The invention provides a vehicle tail gas temperature control processing method, device, equipment and storage medium, which are used for improving the tail gas temperature, improving the tail gas conversion efficiency and reducing the fuel consumption and the pollutant gas emission.
According to an aspect of the present invention, there is provided a vehicle exhaust temperature control processing method. The method comprises the following steps: acquiring vehicle operation parameters of a target vehicle; determining vehicle working condition information corresponding to the target vehicle based on the vehicle running parameters; determining a target tail gas temperature required by the target vehicle when tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table; and carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
According to another aspect of the present invention, there is provided a vehicle exhaust temperature control processing apparatus. The device comprises:
the vehicle operation parameter acquisition module is used for acquiring vehicle operation parameters of the target vehicle;
the vehicle working condition information determining module is used for determining vehicle working condition information corresponding to the target vehicle based on the vehicle operation parameters;
the target tail gas temperature determining module is used for determining target tail gas temperature required by the target vehicle when the target vehicle carries out tail gas treatment based on the vehicle working condition information and a pre-constructed working condition temperature comparison table;
and the vehicle tail gas temperature control processing module is used for performing temperature control processing on the tail gas of the target vehicle through the electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle exhaust temperature control processing method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to execute a vehicle exhaust temperature control processing method according to any one of the embodiments of the present invention.
According to the technical scheme, the data information of each running time of the target vehicle can be determined by acquiring the vehicle running parameters of the target vehicle, and the vehicle working condition information corresponding to the target vehicle is determined by a plurality of vehicle running parameters. And determining the target tail gas temperature required by the target vehicle when the tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table. Based on the vehicle working condition information, the current tail gas temperature of the target vehicle, the target tail gas temperature and other information, and the electric heating device is used for heating the target vehicleAnd carrying out temperature control treatment on the tail gas. The tail gas is subjected to temperature control treatment through the electric heating device, so that the electric energy of the storage battery of the vehicle can be directly converted into heat energy under any working condition of the target vehicle, the temperature of the tail gas is improved, the tail gas can be quickly ignited during the post-treatment of the tail gas, the conversion efficiency is improved, and meanwhile, the CO and HC generated in the starting and warming processes can be reduced. The energy control of the electric heating device is more accurate and efficient, and the fuel consumption and CO can be reduced 2 And (5) discharging. In addition, the coating amount of noble metal of the exhaust gas post-processor can be properly reduced, and the exhaust gas conversion cost is reduced.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a vehicle exhaust temperature control processing method according to a first embodiment of the invention;
FIG. 2 is a flowchart of a vehicle exhaust temperature control processing method according to a second embodiment of the present invention;
fig. 3 is a block diagram of a vehicle exhaust temperature control processing apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing a vehicle exhaust temperature control processing method according to an 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.
Example 1
Fig. 1 is a flowchart of a vehicle exhaust temperature control processing method according to an embodiment of the present invention, where the embodiment is applicable to a case of performing temperature control on fuel automobile exhaust, and is particularly applicable to a case of raising the temperature of fuel automobile exhaust. The method may be performed by a vehicle exhaust temperature control processing device, which may be implemented in hardware and/or software, which may be configured in an electronic apparatus. As shown in fig. 1, the method includes:
s101, acquiring vehicle operation parameters of a target vehicle.
The target vehicle may refer to a vehicle to be subjected to an exhaust treatment. The obtained vehicle operating parameters may include, but are not limited to, at least one of fuel injection amount, engine speed, current exhaust gas temperature, battery remaining power, water temperature, ambient temperature, and oil pump pressure. The current exhaust gas temperature may refer to exhaust gas that is discharged from the engine of the target vehicle and does not enter the exhaust gas aftertreatment device, that is, exhaust gas to be subjected to conversion treatment.
The vehicle operation parameters may be obtained by connecting a mobile device to an OBD (On-Board-Diagnostic) interface of the vehicle, or by adding a wireless communication sensor, which is not described in detail herein.
S102, determining vehicle working condition information corresponding to the target vehicle based on the vehicle running parameters.
The vehicle condition information may include at least one of an inactive state, a braking state, a coasting state, an idle state, and a normal running state, among others. Specifically, the acquired vehicle operation parameters may be compared with a predetermined vehicle operation index to distinguish the vehicle condition information of the target vehicle.
Illustratively, the determining the vehicle condition information corresponding to the target vehicle based on the vehicle operation parameters includes at least one of the following operations: determining that the target vehicle is in an inactive state when the engine speed is zero; under the condition that the oil injection quantity is zero, determining that the target vehicle is in a braking state or a sliding state; under the condition that the fuel injection quantity is non-zero and the engine rotating speed is lower than or equal to a preset rotating speed, determining that the target vehicle is in an idle state; and under the condition that the fuel injection quantity is non-zero and the engine rotating speed is higher than the preset rotating speed, determining that the target vehicle is in a normal running state.
Specifically, the current working condition state of the target vehicle is determined according to the engine speed and/or the fuel injection quantity when the target vehicle runs. For example, when the engine speed is zero, it may be indicated that the target vehicle is in an inactive state. When the fuel injection quantity is zero, the target vehicle can be indicated to be in a braking state or a sliding state; when the fuel injection quantity is not zero and the engine speed is lower than or equal to the preset speed, the target vehicle can be indicated to be in an idle state; when the fuel injection amount is non-zero and the engine speed is higher than the preset speed, the target vehicle can be indicated to be in a normal running state. The preset rotating speed can be the idle rotating speed of a conventional vehicle, and can also be specifically set according to actual environment conditions or requirements.
S103, determining the target exhaust gas temperature required by the target vehicle when the target vehicle carries out exhaust gas treatment based on the vehicle working condition information and a pre-constructed working condition temperature comparison table.
The target exhaust gas temperature may be an optimal temperature when the vehicle exhaust gas is subjected to the conversion treatment. When the highest conversion efficiency is pursued, the target tail gas temperature may be the temperature corresponding to the optimal conversion efficiency; when the highest conversion effect is pursued, the target exhaust gas temperature may be the temperature corresponding to when the conversion effect is optimal. The target tail gas temperature can be obtained through a large number of conversion experiments, and can also be obtained through theoretical reasoning. The working condition temperature comparison table is a preset comparison table, and records the optimal tail gas conversion temperature corresponding to the target vehicle under different working conditions.
Specifically, the determined vehicle working condition information and the working condition temperature comparison table are subjected to comparison and matching processing, temperature information matched with the vehicle working condition information is determined, and the temperature information is determined to be the target tail gas temperature.
The working condition temperature comparison table can be a map formed according to the engine speed and the fuel injection quantity, and can also comprise parameters such as water temperature, ambient temperature, pressure and the like. The invention can also directly determine the target tail gas temperature corresponding to the target vehicle according to the engine speed and the fuel injection quantity.
S104, performing temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
Specifically, according to the vehicle working condition information and the current exhaust gas temperature, determining an exhaust gas treatment strategy of the target vehicle on the vehicle exhaust gas. And according to an exhaust treatment strategy, not carrying out heating treatment on the vehicle exhaust, or heating the vehicle exhaust to a target exhaust temperature through an electric heating device.
Illustratively, the performing temperature control treatment on the exhaust gas of the target vehicle by the electric heating device includes: determining a tail gas temperature difference between the current tail gas temperature and the target tail gas temperature; determining heating power corresponding to temperature control processing based on the tail gas temperature difference, the tail gas specific heat capacity of the target vehicle, the tail gas mass flow and the heating efficiency of the electric heating device; and performing temperature control treatment on the tail gas of the target vehicle based on the heating power corresponding to the temperature control treatment through an electric heating device.
The determining the heating power corresponding to the electric heating device based on the exhaust gas temperature difference, the exhaust gas specific heat capacity of the target vehicle, the exhaust gas mass flow rate, and the heating efficiency of the electric heating device may be specifically implemented by:
Wherein C is pair Can represent the specific heat capacity of the tail gas; m is m exh Can represent the tail gas mass flow; (T) target -T exh ) Can represent the difference in exhaust gas temperature; η (eta) heater The heating efficiency can be expressed, and is an inherent characteristic of the electric heating device.
Specifically, a tail gas temperature difference value between a target temperature and an exhaust temperature is calculated, heating power corresponding to temperature control processing is determined based on the tail gas temperature difference value, the tail gas specific heat capacity, the tail gas mass flow and the heating efficiency of the electric heating device, and the heating power of the electric heating device is adjusted through a PID controller, so that the electric heating device performs temperature control processing on the tail gas of the target vehicle based on the heating power corresponding to the temperature control processing, and closed-loop control on the tail gas of the vehicle is realized.
Illustratively, closed loop control may be embodied as follows. When the exhaust gas temperature difference is 50 ℃, the electric heating device carries out heating treatment on the vehicle exhaust gas based on 3kW power. As the temperature difference is reduced, the heater probability is gradually reduced. For example, when the temperature difference of the tail gas is reduced to 30 ℃, the power heating device can avoid overshoot due to the fact that the temperature rises too fast based on the reduction to 2kw, and meanwhile, the battery load can be reduced, and the durability of the power heating device for heating the tail gas of the vehicle can be improved.
According to the technical scheme, the data information of each running time of the target vehicle can be determined by acquiring the vehicle running parameters of the target vehicle, and the vehicle working condition information corresponding to the target vehicle is determined by a plurality of vehicle running parameters. And determining the target tail gas temperature required by the target vehicle when the tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table. And carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle, the target tail gas temperature and other information. The tail gas is subjected to temperature control treatment through the electric heating device, so that the electric energy of the storage battery of the vehicle can be directly converted into heat energy under any working condition of the target vehicle, the temperature of the tail gas is improved, the tail gas can be quickly ignited during the post-treatment of the tail gas, the conversion efficiency is improved, and meanwhile, the CO and HC generated in the starting and warming processes can be reduced. The energy control of the electric heating device is more accurate and efficient, and the fuel consumption and CO can be reduced 2 And (5) discharging. In addition, the coating amount of noble metal of the exhaust gas post-processor can be properly reduced, and the exhaust gas conversion cost is reduced.
Example two
Fig. 2 is a flowchart of a vehicle exhaust temperature control processing method according to a second embodiment of the present invention, where the step of "performing temperature control processing on exhaust gas of the target vehicle by an electric heating device based on the vehicle condition information, the current exhaust gas temperature of the target vehicle, and the target exhaust gas temperature" is further refined on the basis of the above embodiment. As shown in fig. 2, the method includes:
s201, acquiring vehicle operation parameters of a target vehicle.
S202, determining vehicle working condition information corresponding to the target vehicle based on the vehicle operation parameters.
S203, determining the target exhaust gas temperature required by the target vehicle when the target vehicle carries out exhaust gas treatment based on the vehicle working condition information and a pre-constructed working condition temperature comparison table.
S204, under the condition that the target vehicle is in a braking state or a sliding state, carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the current tail gas temperature, a first preset temperature and the target tail gas temperature.
The first preset temperature may be set in advance based on actual conditions or requirements, and is not specifically limited herein.
Specifically, under the condition that the target vehicle is in a braking state or a sliding state, based on the comparison relation between the current exhaust gas temperature and a first preset temperature, a vehicle exhaust gas treatment strategy is determined, and then, based on the exhaust gas treatment strategy, the exhaust gas of the target vehicle is subjected to temperature control treatment.
In an exemplary embodiment, when the target vehicle is in a braking state or a coasting state, the temperature control processing is performed on the exhaust gas of the target vehicle by the electric heating device based on the current exhaust gas temperature, the first preset temperature, and the target exhaust gas temperature, including:
and under the condition that the target vehicle is in a braking state or a sliding state, if the current exhaust gas temperature is smaller than the first preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
Specifically, when the target vehicle is in a braking state or a coasting state, if the current exhaust gas temperature is less than a first preset temperature, the exhaust gas of the target vehicle is heated to the target exhaust gas temperature by the electric heating device. If the current exhaust gas temperature is greater than or equal to the first preset temperature, heating treatment of the exhaust gas of the target vehicle is not needed.
S205, under the condition that the target vehicle is in an idle state, performing temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the idle time length, the idle time length threshold value, the current tail gas temperature, the second preset temperature and the target tail gas temperature of the target vehicle.
The idle time duration threshold and the second preset temperature may also be preset based on actual conditions or requirements. The idle time length threshold value can further distinguish whether the target vehicle is in a long idle state or a short idle state, and makes a more detailed tail gas treatment strategy, so that the temperature control of the tail gas of the vehicle is more accurate, and the loads of an engine and a vehicle-mounted battery are reduced.
Specifically, under the condition that the target vehicle is in an idle state, determining to be in a long idle state or a short idle state based on the comparison relation between the current exhaust temperature and the second preset temperature and the comparison relation between the idle time threshold and the idle time, further determining a vehicle exhaust treatment strategy, and further performing temperature control treatment on the exhaust of the target vehicle based on the exhaust treatment strategy.
In an exemplary embodiment, when the target vehicle is in an idle state, the performing, by using an electric heating device, temperature control processing on the exhaust gas of the target vehicle based on the idle time length, the idle time length threshold, the current exhaust gas temperature, the second preset temperature, and the target exhaust gas temperature of the target vehicle includes:
Under the condition that the target vehicle is in an idle state, if the idle time is smaller than the idle time threshold and the current tail gas temperature is smaller than the second preset temperature, heating the tail gas of the target vehicle to the target tail gas temperature through the electric heating device;
and if the idle time length is greater than or equal to the idle time length threshold value and the current exhaust gas temperature is less than the second preset temperature, adjusting an engine operation strategy of the target vehicle so as to enable the exhaust gas of the target vehicle to be lifted to the target exhaust gas temperature.
Specifically, when the target vehicle is in the idle state, if the idle time length is smaller than the idle time length threshold value and the current exhaust gas temperature is smaller than the second preset temperature, the target vehicle is indicated to be in the short idle state, and the exhaust gas of the target vehicle is heated to the target exhaust gas temperature through the electric heating device. If the idle time length is greater than the idle time length threshold value and the current exhaust gas temperature is less than the second preset temperature, the target vehicle is in a long idle state, and strategies such as reducing the air inlet amount of air through adjusting an exhaust throttle valve of the target vehicle, increasing fuel oil post-injection and/or adjusting the opening degree of a bleed valve of a supercharger are adopted, so that the exhaust gas of the target vehicle is lifted to the target exhaust gas temperature, and the influence of long-time use of electric heating on the fuel consumption of an engine is avoided. If the current exhaust gas temperature is greater than or equal to the second preset temperature, the exhaust gas of the target vehicle does not need to be heated.
S206, under the condition that the target vehicle is in a normal running state, performing temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the current tail gas temperature, a third preset temperature and the target tail gas temperature.
The third preset temperature may be set in advance based on actual conditions or requirements, and is not specifically limited herein.
Specifically, under the condition that the target vehicle is in a normal running state, a vehicle tail gas treatment strategy is determined based on the comparison relation between the current tail gas temperature and a third preset temperature, and then the tail gas of the target vehicle is subjected to temperature control treatment based on the tail gas treatment strategy.
In an exemplary embodiment, when the target vehicle is in an idle state, the performing, by using an electric heating device, temperature control processing on the exhaust gas of the target vehicle based on the idle time length, the idle time length threshold, the current exhaust gas temperature, the second preset temperature, and the target exhaust gas temperature of the target vehicle includes:
and under the condition that the target vehicle is in an idle state, if the current exhaust gas temperature is smaller than the third preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
Specifically, when the target vehicle is in an idle state, if the current exhaust gas temperature is less than a third preset temperature, the exhaust gas of the target vehicle is heated to the target exhaust gas temperature by the electric heating device. If the current exhaust gas temperature is greater than or equal to the third preset temperature, the exhaust gas of the target vehicle does not need to be heated.
When the target vehicle is in the non-activated state, the exhaust gas of the target vehicle does not need to be heat-treated. And secondly, the maximum allowable heating time can be calculated and determined in real time, and when the heating time reaches the maximum allowable heating time, the heating treatment of the vehicle tail gas of the target vehicle by the electric heating device is stopped, so that the fire hazard of the circuit caused by the excessively low electric quantity of the vehicle-mounted battery or the excessively high load of the vehicle-mounted battery is prevented. For example, the maximum allowable heating time may be obtained from a look-up table based on the SOC value of the battery, or a preliminary estimate may be calculated based on the battery available power divided by the heating power.
According to the technical scheme, under the condition that the target vehicle is in a braking state or a sliding state, the tail gas of the target vehicle is subjected to temperature control treatment through an electric heating device based on the current tail gas temperature, a first preset temperature and the target tail gas temperature; under the condition that the target vehicle is in an idle state, performing temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the idle time length, the idle time length threshold value, the current tail gas temperature, a second preset temperature and the target tail gas temperature of the target vehicle; and under the condition that the target vehicle is in a normal running state, carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the current tail gas temperature, a third preset temperature and the target tail gas temperature. By distinguishing the working condition states of the target vehicle in detail and formulating a more detailed tail gas treatment strategy based on the working condition states, more accurate temperature control is carried out on the tail gas of the vehicle based on the tail gas treatment strategy, the conversion efficiency and the conversion effect of the tail gas of the vehicle are improved, and meanwhile, the loads of an engine and a vehicle-mounted battery are reduced.
Example III
Fig. 3 is a schematic structural diagram of a vehicle exhaust temperature control processing device according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: a vehicle operation parameter acquisition module 301, a vehicle working condition information determination module 302, a target exhaust gas temperature determination module 303 and a vehicle exhaust gas temperature control processing module 304.
Wherein,,
a vehicle operation parameter acquisition module 301 for acquiring vehicle operation parameters of a target vehicle;
the vehicle working condition information determining module 302 is configured to determine vehicle working condition information corresponding to the target vehicle based on the vehicle operation parameter;
the target tail gas temperature determining module 303 is configured to determine a target tail gas temperature required when the target vehicle performs tail gas treatment, based on the vehicle working condition information and a pre-constructed working condition temperature comparison table;
and the vehicle tail gas temperature control processing module 304 is configured to perform temperature control processing on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
According to the technical scheme, the data information of each running time of the target vehicle can be determined by acquiring the vehicle running parameters of the target vehicle, and the vehicle working condition information corresponding to the target vehicle is determined by a plurality of vehicle running parameters. And determining the target tail gas temperature required by the target vehicle when the tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table. And carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle, the target tail gas temperature and other information. The tail gas is subjected to temperature control treatment through the electric heating device, so that the electric energy of the storage battery of the vehicle can be directly converted into heat energy under any working condition of the target vehicle, the temperature of the tail gas is improved, the tail gas can be quickly ignited during the post-treatment of the tail gas, the conversion efficiency is improved, and meanwhile, the CO and HC generated in the starting and warming processes can be reduced. The energy control of the electric heating device is more accurate and efficient, and the fuel consumption and CO can be reduced 2 And (5) discharging. In addition, the coating amount of noble metal of the exhaust gas post-processor can be properly reduced, and the exhaust gas conversion cost is reduced.
Optionally, the vehicle operation parameters include at least one of fuel injection amount, engine speed, current exhaust gas temperature, battery residual capacity, water temperature, ambient temperature and oil pump pressure; the vehicle working condition information comprises at least one of an inactive state, a braking state, a coasting state, an idle state and a normal running state;
the vehicle condition information determining module 302 is specifically configured to:
determining that the target vehicle is in an inactive state when the engine speed is zero;
under the condition that the oil injection quantity is zero, determining that the target vehicle is in a braking state or a sliding state;
under the condition that the fuel injection quantity is non-zero and the engine rotating speed is lower than or equal to a preset rotating speed, determining that the target vehicle is in an idle state;
and under the condition that the fuel injection quantity is non-zero and the engine rotating speed is higher than the preset rotating speed, determining that the target vehicle is in a normal running state.
Optionally, the vehicle exhaust temperature control processing module 304 includes: the system comprises a first tail gas temperature control processing unit, a second tail gas temperature control processing unit and a third tail gas temperature control processing unit. Wherein,,
The first exhaust gas temperature control processing unit is used for performing temperature control processing on the exhaust gas of the target vehicle through an electric heating device based on the current exhaust gas temperature, a first preset temperature and the target exhaust gas temperature under the condition that the target vehicle is in a braking state or a sliding state;
the second exhaust gas temperature control processing unit is used for performing temperature control processing on the exhaust gas of the target vehicle through the electric heating device based on the idle time length, the idle time length threshold value, the current exhaust gas temperature, the second preset temperature and the target exhaust gas temperature of the target vehicle when the target vehicle is in the idle state;
and the third exhaust gas temperature control processing unit is used for performing temperature control processing on the exhaust gas of the target vehicle through an electric heating device based on the current exhaust gas temperature, a third preset temperature and the target exhaust gas temperature under the condition that the target vehicle is in a normal running state.
Optionally, the first exhaust gas temperature control processing unit may be specifically configured to:
and under the condition that the target vehicle is in a braking state or a sliding state, if the current exhaust gas temperature is smaller than the first preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
Optionally, the second exhaust gas temperature control processing unit may be specifically configured to:
under the condition that the target vehicle is in an idle state, if the idle time is smaller than the idle time threshold and the current tail gas temperature is smaller than the second preset temperature, heating the tail gas of the target vehicle to the target tail gas temperature through the electric heating device;
and if the idle time length is greater than or equal to the idle time length threshold value and the current exhaust gas temperature is less than the second preset temperature, adjusting an engine operation strategy of the target vehicle so as to enable the exhaust gas of the target vehicle to be lifted to the target exhaust gas temperature.
Optionally, the third exhaust gas temperature control processing unit may be specifically configured to:
and under the condition that the target vehicle is in an idle state, if the current exhaust gas temperature is smaller than the third preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
Optionally, the exhaust temperature control processing module 304 may be specifically configured to:
determining a tail gas temperature difference between the current tail gas temperature and the target tail gas temperature;
Determining heating power corresponding to temperature control processing based on the tail gas temperature difference, the tail gas specific heat capacity of the target vehicle, the tail gas mass flow and the heating efficiency of the electric heating device;
and performing temperature control treatment on the tail gas of the target vehicle based on the heating power corresponding to the temperature control treatment through the electric heating device.
The vehicle tail gas temperature control processing device provided by the embodiment of the invention can execute the vehicle tail gas temperature control processing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the method vehicle exhaust temperature control process.
In some embodiments, the method vehicle exhaust temperature control process may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method vehicle tail gas temperature control process described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the method vehicle exhaust temperature control process in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A vehicle exhaust temperature control processing method characterized by comprising:
acquiring vehicle operation parameters of a target vehicle;
determining vehicle working condition information corresponding to the target vehicle based on the vehicle running parameters;
determining a target tail gas temperature required by the target vehicle when tail gas treatment is carried out based on the vehicle working condition information and a pre-constructed working condition temperature comparison table;
and carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
2. The method of claim 1, wherein the vehicle operating parameters include at least one of fuel injection amount, engine speed, current exhaust gas temperature, battery residual capacity, water temperature, ambient temperature, and oil pump pressure; the vehicle working condition information comprises at least one of an inactive state, a braking state, a coasting state, an idle state and a normal running state;
the determining, based on the vehicle operation parameters, vehicle condition information corresponding to the target vehicle includes at least one of the following operations:
determining that the target vehicle is in an inactive state when the engine speed is zero;
under the condition that the oil injection quantity is zero, determining that the target vehicle is in a braking state or a sliding state;
under the condition that the fuel injection quantity is non-zero and the engine rotating speed is lower than or equal to a preset rotating speed, determining that the target vehicle is in an idle state;
and under the condition that the fuel injection quantity is non-zero and the engine rotating speed is higher than the preset rotating speed, determining that the target vehicle is in a normal running state.
3. The method of claim 2, wherein the performing, by an electric heating device, a temperature control process on the exhaust of the target vehicle based on the vehicle operating condition information, the current exhaust temperature of the target vehicle, and the target exhaust temperature, comprises:
Under the condition that the target vehicle is in a braking state or a sliding state, carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the current tail gas temperature, a first preset temperature and the target tail gas temperature;
under the condition that the target vehicle is in an idle state, performing temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the idle time length, the idle time length threshold value, the current tail gas temperature, a second preset temperature and the target tail gas temperature of the target vehicle;
and under the condition that the target vehicle is in a normal running state, carrying out temperature control treatment on the tail gas of the target vehicle through an electric heating device based on the current tail gas temperature, a third preset temperature and the target tail gas temperature.
4. The method according to claim 3, wherein, in the case where the target vehicle is in a braking state or a coasting state, the temperature control processing of the exhaust gas of the target vehicle by the electric heating device based on the current exhaust gas temperature, the first preset temperature, and the target exhaust gas temperature includes:
and under the condition that the target vehicle is in a braking state or a sliding state, if the current exhaust gas temperature is smaller than the first preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
5. The method according to claim 3, wherein, in the case where the target vehicle is in an idle state, performing, by an electric heating device, a temperature control process on exhaust gas of the target vehicle based on an idle time period of the target vehicle, an idle time period threshold, the current exhaust gas temperature, a second preset temperature, and the target exhaust gas temperature, includes:
under the condition that the target vehicle is in an idle state, if the idle time is smaller than the idle time threshold and the current tail gas temperature is smaller than the second preset temperature, heating the tail gas of the target vehicle to the target tail gas temperature through the electric heating device;
and if the idle time length is greater than or equal to the idle time length threshold value and the current exhaust gas temperature is less than the second preset temperature, adjusting an engine operation strategy of the target vehicle so as to enable the exhaust gas of the target vehicle to be lifted to the target exhaust gas temperature.
6. The method according to claim 3, wherein, in the case where the target vehicle is in an idle state, performing, by an electric heating device, a temperature control process on exhaust gas of the target vehicle based on an idle time period of the target vehicle, an idle time period threshold, the current exhaust gas temperature, a second preset temperature, and the target exhaust gas temperature, includes:
And under the condition that the target vehicle is in an idle state, if the current exhaust gas temperature is smaller than the third preset temperature, heating the exhaust gas of the target vehicle to the target exhaust gas temperature through the electric heating device.
7. The method according to claim 1, wherein the temperature-controlled treatment of the exhaust gas of the target vehicle by the electric heating device includes:
determining a tail gas temperature difference between the current tail gas temperature and the target tail gas temperature;
determining heating power corresponding to temperature control processing based on the tail gas temperature difference, the tail gas specific heat capacity of the target vehicle, the tail gas mass flow and the heating efficiency of the electric heating device;
and performing temperature control treatment on the tail gas of the target vehicle based on the heating power corresponding to the temperature control treatment through the electric heating device.
8. A vehicle exhaust temperature control processing apparatus, characterized by comprising:
the vehicle operation parameter acquisition module is used for acquiring vehicle operation parameters of the target vehicle;
the vehicle working condition information determining module is used for determining vehicle working condition information corresponding to the target vehicle based on the vehicle operation parameters;
The target tail gas temperature determining module is used for determining target tail gas temperature required by the target vehicle when the target vehicle carries out tail gas treatment based on the vehicle working condition information and a pre-constructed working condition temperature comparison table;
and the vehicle tail gas temperature control processing module is used for performing temperature control processing on the tail gas of the target vehicle through the electric heating device based on the vehicle working condition information, the current tail gas temperature of the target vehicle and the target tail gas temperature.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle exhaust temperature control processing method of any one of claims 1-7.
10. A computer-readable storage medium storing computer instructions for causing a processor to execute the vehicle exhaust temperature control processing method according to any one of claims 1 to 7.
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| CN202310456216.8A CN116480450A (en) | 2023-04-25 | 2023-04-25 | Vehicle exhaust temperature control processing method, device, equipment and storage medium |
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