CN116753079A

CN116753079A - Gas engine emission control method and device, storage medium and electronic equipment

Info

Publication number: CN116753079A
Application number: CN202310778183.9A
Authority: CN
Inventors: 曹石; 李国朋
Original assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Current assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-09-15

Abstract

The application provides a gas engine emission control method, a gas engine emission control device, a storage medium and electronic equipment. The method comprises the following steps: obtaining the conversion efficiency of a three-way catalyst of a gas engine in the previous driving cycle; determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is positioned; determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adjusting the original row of the gas engine by adopting the target basic data so as to meet one of the following: the tail row of the gas engine meets the emission standard, the gas consumption of at least the current driving cycle is smaller than the preset gas consumption when the emission standard is met, and the power of at least the gas engine is within the preset power range when the emission standard is met. The scheme solves the problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst, and the economical efficiency, the compliance and the dynamic performance can not be considered.

Description

Gas engine emission control method and device, storage medium and electronic equipment

Technical Field

The application relates to the field of gas engines, in particular to a gas engine emission control method, a gas engine emission control device, a storage medium and electronic equipment.

Background

The three-way catalyst is used as a post-treatment core component of a gas engine, and has the main effects of utilizing noble metals in the catalyst to participate in chemical reaction, purifying CO, NOx, HC and other pollutants in engine tail gas, wherein the emission level is determined by the catalytic conversion efficiency, and the conversion efficiency and the aging degree of the catalyst are usually represented by adopting oxygen storage quantity.

The research finds that: (1) the conversion efficiency of the three-way catalyst in a fresh state is high, and a large margin exists between the emission result purified by the three-way catalyst and the limit value required by the standard; (2) with the lengthening of the service time of the catalyst, the catalyst can be aged gradually, the oxygen storage capacity and the capacity are reduced gradually, the conversion efficiency is reduced, and the emission result after purification by the three-way catalyst approaches to the limit value required by the standard; (3) when the three-way catalyst is aged continuously, the conversion efficiency is further reduced, and the emission result after purification by the three-way catalyst does not meet the standard requirement.

The prior art generally uses the same group of engine basic data to meet the matching of the whole life cycle of the three-way catalyst, and cannot consider the economical efficiency, the compliance (i.e. emission) and the dynamic property.

Disclosure of Invention

The application mainly aims to provide a gas engine emission control method, a gas engine emission control device, a storage medium and electronic equipment, which at least solve the problems that the matching of the whole life cycle of a three-way catalyst is met by using the same set of engine basic data, and the economical efficiency, the compliance and the dynamic performance cannot be considered.

In order to achieve the above object, according to one aspect of the present application, there is provided a gas engine emission control method comprising: obtaining the conversion efficiency of a three-way catalyst of a gas engine in the previous driving cycle; determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located; determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adopting the target basic data to adjust the original row of the gas engine so as to meet one of the following: the tail row of the gas engine meets an emission standard, the gas consumption of at least the current driving cycle is smaller than a preset gas consumption when the emission standard is met, and the power of the gas engine is at least within a preset power range when the emission standard is met; the target basic data are data affecting an original exhaust gas of the gas engine, the original exhaust gas is an original exhaust amount of exhaust gas which is not purified by the three-way catalyst aftertreatment device, and the tail exhaust gas is a final exhaust amount of the exhaust gas which is purified by the three-way catalyst aftertreatment device.

Optionally, determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located includes: under the condition that the conversion efficiency of the three-way catalyst is greater than or equal to a first conversion rate threshold value, determining a conversion efficiency interval in which the conversion efficiency is positioned as a first conversion rate interval, wherein the residual quantity of which the initial tail row corresponding to the first conversion rate interval meets and is superior to the emission standard is in a first residual quantity range; determining that a conversion efficiency interval in which the conversion efficiency is located is a second conversion efficiency interval when the conversion efficiency of the three-way catalyst is greater than or equal to a second conversion rate threshold and less than the first conversion rate threshold, and the margin that the initial tail row corresponding to the second conversion rate interval meets and is superior to the emission standard is in a second margin range, wherein the minimum margin of the first margin range is greater than the maximum margin of the second margin range; under the condition that the conversion efficiency of the three-way catalyst is smaller than the second conversion rate threshold value, determining a conversion efficiency interval in which the conversion efficiency is positioned as a third conversion rate interval, wherein at least part of emissions in an initial tail row corresponding to the third conversion rate interval do not meet the corresponding emission standard; the initial tail rows are tail rows which are not subjected to self-adaptive adjustment, and the second conversion rate threshold value is smaller than the first conversion rate threshold value.

Optionally, determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adjusting the bank of the gas engine by using the target basic data so as to satisfy one of the following: the tail row of the gas engine meets the emission standard, the gas consumption of at least meeting the current driving cycle is smaller than the preset gas consumption when meeting the emission standard, and the power of at least meeting the gas engine when meeting the emission standard is within the preset power range, and the tail row of the gas engine comprises the following components: when the conversion efficiency interval is the first conversion efficiency interval, switching the current basic data to a first group of target basic data, and adopting the first group of target basic data to control the original row of the gas engine to be in a first original row range, so that the tail row of the gas engine meets the emission standard, and the gas consumption meeting the current driving cycle is smaller than the preset gas consumption and the power of the gas engine is within the preset power range; switching the current basic data to a second group of target basic data under the condition that the conversion efficiency interval is the second conversion efficiency interval, and adopting the second group of target basic data to control the original row of the gas engine to be in a second original row range so that the tail row of the gas engine meets the emission standard and the power of the gas engine is in the preset power range; and under the condition that the conversion efficiency interval is the third conversion efficiency interval, switching the current basic data to a third group of target basic data, and adopting the third group of target basic data to control the original row of the gas engine to be in a third original row range so that the tail row of the gas engine firstly meets the emission standard, wherein the maximum value of the third original row range is smaller than the minimum value of the second original row range, and the maximum value of the second original row range is smaller than the minimum value of the first original row range.

Optionally, adjusting the bank of the gas engine using the target base data includes: determining an aging factor corresponding to a conversion efficiency of the three-way catalyst; correcting the target basic data by adopting the aging factor to obtain corrected target basic data; and adjusting the original row of the gas engine by adopting the corrected target basic data.

Optionally, determining an aging factor corresponding to the conversion efficiency of the three-way catalyst includes: determining an oxygen storage amount of the three-way catalyst corresponding to a conversion efficiency of the three-way catalyst; and determining the aging factor according to the ratio of the oxygen storage amount of the three-way catalyst to the preset oxygen content.

Optionally, correcting the target basic data by adopting the aging factor to obtain corrected target basic data, including: acquiring the ratio of the aging factor to a reference aging factor; multiplying the ratio with the target basic data to obtain the corrected target basic data.

Optionally, after determining target base data corresponding to the conversion efficiency interval, and adaptively switching current base data to the target base data, and adjusting the bank of the gas engine using the target base data, the method further includes: obtaining a new aging factor obtained by calculation after the current driving cycle meets the conversion efficiency calculation condition of the three-way catalyst; the new aging factor is stored in memory prior to powering down the ECU.

According to another aspect of the present application, there is provided a gas engine emission control device comprising: a first acquisition unit for acquiring the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle; a determining unit, configured to determine a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located; the processing unit is used for determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adopting the target basic data to adjust the original row of the gas engine so as to meet one of the following requirements: the tail row of the gas engine meets an emission standard, the gas consumption of at least the current driving cycle is smaller than a preset gas consumption when the emission standard is met, and the power of the gas engine is at least within a preset power range when the emission standard is met; the target basic data are data affecting an original exhaust gas of the gas engine, the original exhaust gas is an original exhaust amount of exhaust gas which is not purified by the three-way catalyst aftertreatment device, and the tail exhaust gas is a final exhaust amount of the exhaust gas which is purified by the three-way catalyst aftertreatment device.

According to another aspect of the present application, there is provided a computer readable storage medium including a stored program, wherein the program when run controls a device in which the computer readable storage medium is located to perform any one of the gas engine emission control methods.

According to another aspect of the present application, there is provided an electronic apparatus including: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the gas engine emission control methods.

By adopting the technical scheme of the application, the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle is obtained, the conversion efficiency interval where the conversion efficiency of the three-way catalyst is located is determined, the target basic data corresponding to the conversion efficiency interval is determined, the current basic data is adaptively switched to the target basic data, and the original row of the gas engine is adjusted by adopting the target basic data, so that the target basic data is adaptively adjusted according to the different conversion efficiencies, and the original row of the whole gas engine is adaptively adjusted, thereby meeting the requirements of economy, compliance and dynamic property. The problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst and cannot consider economical efficiency, compliance and dynamic performance is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 is a block diagram showing a hardware configuration of a mobile terminal for performing a gas engine emission control method according to an embodiment of the present application;

FIG. 2 illustrates a flow diagram of a gas engine emission control method provided in accordance with an embodiment of the present application;

FIG. 3 shows a schematic flow chart for determining a conversion efficiency interval according to an embodiment of the present application;

FIG. 4 is a flow chart of determining target base data according to an embodiment of the present application;

FIG. 5 illustrates a flow diagram of a particular gas engine emission control method provided in accordance with an embodiment of the present application;

fig. 6 shows a block diagram of a gas engine emission control device provided according to an embodiment of the present application.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application 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 application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application 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 in order to describe the embodiments of the application 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.

For convenience of description, the following will describe some terms or terminology involved in the embodiments of the present application:

MAP: a map is input X, Y, and a corresponding numerical value Z is output;

EEP: an EEPROM is a charged erasable programmable read-only memory, which is a memory chip with no data loss after power failure;

original row: the original emission of the engine, namely the original emission which is not purified by the three-way catalyst aftertreatment device;

tail row: the final emission of the engine, i.e. after post-treatment purification.

Three-way catalyst aging factor: the degree of aging or conversion efficiency of a three-way catalyst is generally characterized by the oxygen storage capacity of the three-way catalyst, for example: defining the ageing factor value of the three-way catalyst in a fresh state as 1, wherein the ageing factor value after ageing is smaller than 1; the smaller the oxygen storage amount of the three-way catalyst, the smaller the aging factor, and the lower the conversion efficiency.

As introduced in the background art, in the prior art, the same set of engine basic data can meet the matching of the whole life cycle of the three-way catalyst, and economy, compliance and dynamic performance cannot be considered.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

The method embodiments provided in the embodiments of the present application may be performed in a mobile terminal, a computer terminal or similar computing device. Taking a mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of a mobile terminal of a gas engine emission control method according to an embodiment of the present application. As shown in fig. 1, a mobile terminal may include one or more (only one is shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and not limiting of the structure of the mobile terminal described above. For example, the mobile terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.

The memory 104 may be used to store computer programs, such as software programs and modules of application software, such as computer programs corresponding to the gas engine emission control method in the embodiment of the present application, and the processor 102 executes the computer programs stored in the memory 104 to perform various functional applications and data processing, that is, to implement the method described above. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.

In the present embodiment, a method of controlling emission of a gas engine operating on a mobile terminal, a computer terminal, or a similar computing device is provided, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and although a logical sequence is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in a different order than that illustrated herein.

Fig. 2 is a flow chart of a gas engine emission control method according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:

step S201, obtaining the conversion efficiency of a three-way catalyst of a gas engine in the previous driving cycle;

wherein, the driving cycle is a complete process of the vehicle completing ignition, running (if the vehicle has a fault and can be detected) and flameout, which is called a driving cycle; i.e. including engine start, engine shut down, normal driving, etc.

Wherein the gas engine is a gas engine installed in a vehicle;

wherein one driving cycle is processed for one processing stage, so that the data in the previous driving cycle can be used as a reference for the control of the current driving cycle.

Step S202, determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located;

specifically, the conversion efficiency of the three-way catalyst can be divided into different conversion efficiency intervals, and in general, the longer the service time of the gas engine is, the lower the conversion efficiency of the three-way catalyst is; that is to say the conversion efficiency of the three-way catalyst differs at different stages of the full life cycle.

Specifically, the conversion efficiency intervals are divided according to which conversion efficiency nodes, and the properties of the three-way catalyst of the gas engine, such as the life property, need to be considered. That is, different three-way catalytic converters are provided with different conversion efficiency intervals, which is favorable for the accuracy of target basic data determined later and further gives consideration to economy, compliance and dynamic property.

Step S203, determining target basic data corresponding to the conversion efficiency interval, adaptively switching the current basic data to the target basic data, and adjusting the original row of the gas engine by using the target basic data so as to satisfy one of the following: the tail row of the gas engine meets the emission standard, the gas consumption of at least the current driving cycle is smaller than the preset gas consumption when the emission standard is met, and the power of the gas engine is at least within the preset power range when the emission standard is met;

The tail row of the gas engine meets the emission standard and corresponds to compliance, namely emission, the gas consumption of the current driving cycle is smaller than the preset gas consumption and corresponds to economy, and the power of the gas engine is in a preset power range and corresponds to power.

The strategy of setting different target basic data for different conversion efficiency intervals prevents the phenomenon that the same group of engine basic data meets the matching of the whole life cycle of the three-way catalyst, namely, the difference of emission results caused by the difference of conversion efficiency is considered, and the economy, the compliance and the dynamic property are further considered.

In addition, the original arrangement mode of the gas machine is adjusted, so that economical efficiency, compliance and dynamic performance are both met, and the gas machine is accurate and timely.

The target basic data are data of an original exhaust gas affecting the gas engine, the original exhaust gas is an original emission amount of the exhaust gas which is not purified by the three-way catalyst after-treatment device, and the tail exhaust gas is a final emission amount of the exhaust gas which is purified by the three-way catalyst after-treatment device.

Specifically, when the same data are suitable for different aging degrees of the three-way catalyst, and the conversion efficiency of the three-way catalyst is high, the emission allowance is large, and the economical efficiency and the dynamic property are poor; when the conversion efficiency of the three-way catalyst is lower than a certain range, there is a risk that the regulations are not satisfied in the emissions, and the dynamic property and economical efficiency are also deteriorated. The scheme of the application skillfully avoids the defects.

According to the gas engine emission control method, the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle is obtained, the conversion efficiency interval where the conversion efficiency of the three-way catalyst is located is determined, the target basic data corresponding to the conversion efficiency interval is determined, the current basic data is adaptively switched to the target basic data, the original row of the gas engine is adjusted by adopting the target basic data, the purpose of adaptively adjusting the target basic data according to different conversion efficiencies is achieved, and the original row of the whole gas engine is adaptively adjusted, so that economical efficiency, compliance and dynamic performance are met. The problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst and cannot consider economical efficiency, compliance and dynamic performance is solved.

In the method embodiment of the present application, step S202, determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located, as shown in fig. 3, includes the following steps:

step S2021, under the condition that the conversion efficiency of the three-way catalyst is greater than or equal to a first conversion rate threshold, determining a conversion efficiency interval in which the conversion efficiency is positioned as a first conversion rate interval, wherein the residual quantity of the initial tail row corresponding to the first conversion rate interval meeting and being superior to the emission standard is in a first residual quantity range;

In this case, the initial tail row under the conversion efficiency exceeds the emission standard and has more allowance, and the original row is adjusted by setting corresponding target basic data, so that the economical efficiency and the dynamic property can be simultaneously considered while the compliance is met;

step S2022, where the conversion efficiency of the three-way catalyst is greater than or equal to the second conversion rate threshold and less than the first conversion rate threshold, determining a conversion efficiency interval in which the conversion efficiency is located as a second conversion rate interval, and a margin that the initial tail line corresponding to the second conversion rate interval meets and is superior to the emission standard is within a second margin range, where a minimum margin of the first margin range is greater than a maximum margin of the second margin range;

this situation corresponds to a situation where the initial tail-row at conversion efficiency meets the emission standard but the margin is small, at which time adjustments are made according to the corresponding target base data, balancing the emissions, economy, and dynamics of the engine.

Step S2023, under the condition that the conversion efficiency of the three-way catalyst is smaller than the second conversion rate threshold value, determining a conversion efficiency interval in which the conversion efficiency is located as a third conversion rate interval, wherein at least part of emissions in an initial tail row corresponding to the third conversion rate interval do not meet the corresponding emission standard;

Wherein the second conversion threshold is less than the first conversion threshold. For example, the first conversion threshold value is 90% and the second conversion threshold value is 80%.

In addition, the second conversion threshold and the first conversion threshold may be sized according to an emission standard, varying as the emission standard varies.

Wherein, the emissions include: CO, HC, NO _X Etc., the different emissions have their corresponding emission standards, e.g., CO emission standards of NO more than 0.7mg/km, HC emission standards of NO more than 0.068mg/km, NO _X Is not more than 0.06mg/km.

The initial tail row is a tail row which is not subjected to self-adaptive adjustment.

In this case, the initial tail-row corresponding to the conversion efficiency does not satisfy the emission standard, and it is necessary to set the corresponding target base data to preferentially satisfy the emission requirement. If the emission performance is satisfied, the economical efficiency and the dynamic performance are more ideal.

As set up above, be more typical three kinds of situations, the mode of dividing like this is more reasonable, and the matching of meeting three way catalyst full life cycle is satisfied to the basic data of the same group engine of being more convenient for, can't compromise this technical problem of economic nature, compliance and dynamic nature.

Of course, the conversion rate interval may be divided into more than three cases. For example, the first conversion rate section may be divided into two sub-sections, the second conversion rate section into three sub-sections, and the third conversion rate section into two sub-sections; for example, the first conversion rate section may be divided into three sub-sections, the second conversion rate section into two sub-sections, and the third conversion rate section into two sub-sections; the manner of dividing the intervals may be selected for the purpose of giving consideration to economy, compliance and power.

Specifically, determining target basic data corresponding to a conversion efficiency interval, adaptively switching current basic data to the target basic data, and adjusting an original row of the gas engine by adopting the target basic data so as to meet one of the following: the tail row of the gas engine meets the emission standard, the gas consumption of at least meeting the current driving cycle is smaller than the preset gas consumption when meeting the emission standard, and the power of at least meeting the gas engine is in the preset power range when meeting the emission standard, and the tail row of the gas engine comprises the following components:

under the condition that the conversion efficiency interval is a first conversion efficiency interval, switching the current basic data to a first group of target basic data, and adopting the first group of target basic data to control the original row of the gas engine to be in a first original row range, so that the tail row of the gas engine meets the emission standard, and meanwhile, the gas consumption meeting the current driving cycle is smaller than the preset gas consumption, and the power meeting the gas engine is in a preset power range;

That is, for the first case, the emission has been satisfied to the maximum extent, and since the surplus is large, the original row can be appropriately increased to save the cost, that is, to reduce the gas consumption to improve the economy and the power.

Under the condition that the conversion efficiency interval is a second conversion efficiency interval, switching the current basic data to a second group of target basic data, and adopting the second group of target basic data to control the original row of the gas engine to be in a second original row range so that the tail row of the gas engine meets the emission standard and the power of the gas engine is in a preset power range;

that is, for the second case, the emissions are just satisfied, but the margin is small, at which time the emissions, economy, and power of the engine are balanced.

And under the condition that the conversion efficiency interval is a third conversion efficiency interval, switching the current basic data to a third group of target basic data, and adopting the third group of target basic data to control the original row of the gas engine to be in a third original row range so that the tail row of the gas engine firstly meets the emission standard, wherein the maximum value of the third original row range is smaller than the minimum value of the second original row range, and the maximum value of the second original row range is smaller than the minimum value of the first original row range.

That is, for the third scenario, if no adjustment is made to not meet the compliance requirement, it is appropriate to preferentially meet the compliance requirement because compliance is the most important requirement. If the economical efficiency and the dynamic performance can be satisfied, the method is more ideal.

As described above, the adjustment method for three situations is reasonable in consideration of emissions, economy and dynamic performance, and further gives consideration to economy, compliance and dynamic performance.

The method can reduce the gas consumption and improve the economy and the dynamic property of the engine while ensuring that the emission property of the engine meets the regulation requirement to the maximum extent. Meanwhile, the application range of the three-way catalyst can be enlarged by fine adjustment of related base number data, emission requirements can be met under lower conversion efficiency, and the emission robustness is improved. The conversion efficiency of the three-way catalyst can be maximized by modifying the basic data before the aging state of the three-way catalyst is not reduced to the irreversible degree.

Further, in step S203: the adjustment of the original row of the gas engine by using the target basic data, as shown in fig. 4, can be specifically implemented as follows:

step S2031: determining an aging factor corresponding to a conversion efficiency of the three-way catalyst;

The change of the aging factor reflects the change of the conversion efficiency of the three-way catalyst, and the smaller the oxygen storage amount of the three-way catalyst is, the smaller the aging factor is, and the lower the conversion efficiency is.

Step S2032: correcting the target basic data by adopting an aging factor to obtain corrected target basic data;

because the target basic data set in advance is set for the conversion efficiency interval, the size factor of the aging factor can be considered again in order to realize more accurate control;

step S2033: and adjusting the original row of the gas engine by adopting the corrected target basic data.

And correcting the target basic data by adopting the aging factors to obtain corrected target basic data, and adjusting the original row of the gas engine by adopting the corrected target basic data. Because the size factors of the aging factors are considered, the corrected target basic data is more accurate, the original row is more accurate, and the economical efficiency, the compliance and the dynamic performance are further considered.

In an embodiment of the present application, determining an aging factor corresponding to a conversion efficiency of a three-way catalyst includes:

determining an oxygen storage amount of the three-way catalyst corresponding to a conversion efficiency of the three-way catalyst;

And determining an aging factor according to the ratio of the oxygen storage amount of the three-way catalyst to the preset oxygen content.

The oxygen storage amount can be obtained by adopting a proper mode, and the application is not limited.

The corresponding aging factors are determined according to the oxygen storage amount of the three-way catalyst, so that the accurate determination of the aging factors can be realized.

More specifically, the target basic data is corrected by adopting the aging factor, so as to obtain corrected target basic data, which comprises the following steps:

acquiring the ratio of the aging factor to the reference aging factor;

the reference aging factor can be adjusted according to different performances of the three-way catalyst;

multiplying the ratio with the target basic data to obtain corrected target basic data.

This idea of considering the ratio allows a more accurate determination of the corrected target base data.

Of course, the above way of correcting the ratio of the aging factor to the reference aging factor is merely exemplary, and other ways may be selected to implement the correction of the target basic data, for example, directly multiplying or dividing the aging factor by a preset coefficient to obtain a correction parameter, and correcting the target basic data by using the correction parameter; for example, the target basic data is modified by (1-A/B), wherein A represents an aging factor and B represents a preset coefficient; for example, the target base data is corrected using the difference between the aging factor and the reference aging factor.

Further, after determining the target basic data corresponding to the conversion efficiency interval, adaptively switching the current basic data to the target basic data, and adjusting the original row of the gas engine by using the target basic data, the method further comprises:

obtaining a new aging factor obtained by calculation after the current driving cycle meets the conversion efficiency calculation condition of the three-way catalyst;

the new aging factor is stored in memory prior to powering down the ECU.

That is, after the conversion efficiency calculation condition of the three-way catalyst is satisfied, a new aging factor is obtained, and preparation is made for calculation of the next driving cycle.

Specifically, the base data includes at least one of: lambda closed-loop control window MAP, pedal demand MAP, spark advance MAP, demand EGR rate MAP. Of course, other data may also be included.

In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the implementation process of the gas engine emission control method of the present application will be described in detail with reference to specific embodiments.

The present embodiment relates to a specific gas engine emission control method, as shown in fig. 5, including:

according to the aging factor value of the three-way catalyst, different original row control modes are adaptively triggered: (1) when the aftertreatment aging factor of the three-way catalyst is higher than a first threshold, the three-way catalyst is high in conversion efficiency, and the engine emission self-adaptive control mode enters a high-efficiency conversion mode, and in the mode, the original emission can be improved by modifying relevant basic data, the gas consumption is reduced, and the economical efficiency and the dynamic property are improved; (2) when the three-way catalyst aftertreatment aging factor is smaller than the first threshold and larger than or equal to the second threshold, the three-way catalyst conversion efficiency is in a normal range, the engine emission self-adaptive control mode enters a normal conversion mode, and the emission, economy and dynamic property of the engine are balanced by modifying relevant basic data in the mode; (3) when the three-way catalyst aftertreatment aging factor is smaller than a second threshold value, the three-way catalyst conversion efficiency is low, the engine emission self-adaptive control mode enters a low conversion mode, the original emission is reduced by modifying relevant basic data in the mode, and the emission performance of the engine is preferentially ensured.

The new three-way catalyst aging factor may be assigned an initial value of 1, and the recalculated aging factor for each driving cycle three-way catalyst is stored in the EEP.

Basic data MAPs that affect emissions, economy, and power include, but are not limited to, lambda closed-loop control window MAPs, pedal demand MAPs, spark advance MAPs, demand EGR rates MAPs, etc., which are to be switched when the engine enters different emissions control modes based on three-way catalyst degradation factors.

By adaptively switching different emission control modes based on different aging states of the three-way catalyst, the gas consumption can be reduced and the economical efficiency and the dynamic property of the engine can be improved while the emission property of the engine can be ensured to meet the requirement of regulations to the maximum extent. Meanwhile, the application range of the three-way catalyst can be enlarged by fine adjustment of related base number data, emission requirements can be met under lower conversion efficiency, and the emission robustness is improved.

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 other than that illustrated herein.

The embodiment of the application also provides a gas engine emission control device, and the gas engine emission control device can be used for executing the gas engine emission control method provided by the embodiment of the application. The device is used for realizing the above embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

The following describes a gas engine emission control device provided in an embodiment of the present application.

Fig. 6 is a schematic diagram of a gas engine emission control device according to an embodiment of the present application. As shown in fig. 6, the apparatus includes:

a first obtaining unit 61 for obtaining the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle;

A determining unit 62 for determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located;

a processing unit 63, configured to determine target basic data corresponding to the conversion efficiency interval, adaptively switch the current basic data to the target basic data, and adjust an original row of the gas engine using the target basic data so as to satisfy one of the following: the tail row of the gas engine meets the emission standard, the gas consumption of at least the current driving cycle is smaller than the preset gas consumption when the emission standard is met, and the power of the gas engine is at least within the preset power range when the emission standard is met;

According to the gas engine emission control device, the first acquisition unit acquires the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle, the determination unit determines the conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located, the processing unit determines the target basic data corresponding to the conversion efficiency interval, the current basic data is adaptively switched to the target basic data, the target basic data is adopted to adjust the original row of the gas engine, the purpose of adaptively adjusting the target basic data according to different conversion efficiencies is achieved, and the original row of the whole gas engine is adaptively adjusted to meet the requirements of economy, compliance and dynamic property. The problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst and cannot consider economical efficiency, compliance and dynamic performance is solved.

In the embodiment of the application, the determining unit comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining that a conversion efficiency interval in which the conversion efficiency is positioned is a first conversion rate interval when the conversion efficiency of the three-way catalyst is greater than or equal to a first conversion rate threshold value, and the allowance, corresponding to the first conversion rate interval, of which the initial tail rows meet and are superior to the emission standard is in a first allowance range; the second determining module is used for determining that a conversion efficiency interval in which the conversion efficiency is positioned is a second conversion rate interval when the conversion efficiency of the three-way catalyst is greater than or equal to a second conversion rate threshold value and is smaller than a first conversion rate threshold value, and the allowance of the initial tail row corresponding to the second conversion rate interval meeting and being superior to the emission standard is in a second allowance range, wherein the minimum allowance of the first allowance range is larger than the maximum allowance of the second allowance range; the third determining module is used for determining a conversion efficiency interval in which the conversion efficiency is positioned as a third conversion rate interval when the conversion efficiency of the three-way catalyst is smaller than a second conversion rate threshold value, and at least part of emissions in an initial tail row corresponding to the third conversion rate interval do not meet the corresponding emission standard; the initial tail rows are tail rows which are not subjected to self-adaptive adjustment, and the second conversion rate threshold value is smaller than the first conversion rate threshold value. As set up above, be more typical three kinds of situations, the mode of dividing like this is more reasonable, and the matching of meeting three way catalyst full life cycle is satisfied to the basic data of the same group engine of being more convenient for, can't compromise this technical problem of economic nature, compliance and dynamic nature.

In the embodiment of the application, the processing unit comprises a first processing module, a second processing module and a third processing module, wherein the first processing module is used for switching the current basic data to a first group of target basic data under the condition that the conversion efficiency interval is a first conversion rate interval, and adopting the first group of target basic data to control the original row of the gas engine to be in a first original row range, so that the tail row of the gas engine meets the emission standard, and meanwhile, the gas consumption meeting the current driving cycle is smaller than the preset gas consumption, and the power meeting the gas engine is in a preset power range; the second processing module is used for switching the current basic data to a second group of target basic data under the condition that the conversion efficiency interval is a second conversion efficiency interval, and adopting the second group of target basic data to control the original row of the gas engine to be in a second original row range so as to enable the tail row of the gas engine to meet the emission standard and meet the power of the gas engine to be in a preset power range; and the third processing module is used for switching the current basic data to a third group of target basic data under the condition that the conversion efficiency interval is a third conversion efficiency interval, and adopting the third group of target basic data to control the original row of the gas engine to be in a third original row range so that the tail row of the gas engine firstly meets the emission standard, wherein the maximum value of the third original row range is smaller than the minimum value of the second original row range, and the maximum value of the second original row range is smaller than the minimum value of the first original row range. As described above, the adjustment method for three situations is reasonable in consideration of emissions, economy and dynamic performance, and further gives consideration to economy, compliance and dynamic performance. The method can reduce the gas consumption and improve the economy and the dynamic property of the engine while ensuring that the emission property of the engine meets the regulation requirement to the maximum extent. Meanwhile, the application range of the three-way catalyst can be enlarged by fine adjustment of related base number data, emission requirements can be met under lower conversion efficiency, and the emission robustness is improved. The conversion efficiency of the three-way catalyst can be maximized by modifying the basic data before the aging state of the three-way catalyst is not reduced to the irreversible degree.

Further, the processing unit comprises an adjusting module, wherein the adjusting module is used for adjusting the original row of the gas engine by adopting target basic data, the adjusting module comprises a determining submodule, a correcting submodule and an adjusting submodule, and the determining submodule is used for determining an aging factor corresponding to the conversion efficiency of the three-way catalyst; the correction submodule is used for correcting the target basic data by adopting the aging factors to obtain corrected target basic data; the adjusting submodule is used for adjusting the original row of the gas engine by adopting the corrected target basic data. And correcting the target basic data by adopting the aging factors to obtain corrected target basic data, and adjusting the original row of the gas engine by adopting the corrected target basic data. Because the size factors of the aging factors are considered, the corrected target basic data is more accurate, the original row is more accurate, and the economical efficiency, the compliance and the dynamic performance are further considered.

Further, the determination submodule comprises a first submodule and a second submodule, wherein the first submodule is used for determining the oxygen storage quantity of the three-way catalyst corresponding to the conversion efficiency of the three-way catalyst; the second sub-determination module is used for determining an aging factor according to the ratio of the oxygen storage amount of the three-way catalyst to the preset oxygen content. The corresponding aging factors are determined according to the oxygen storage amount of the three-way catalyst, so that the accurate determination of the aging factors can be realized. The oxygen storage amount can be obtained by adopting a proper mode, and the application is not limited.

Further, the correction submodule comprises a sub-acquisition module and a sub-multiplication module, wherein the sub-acquisition module is used for acquiring the ratio of the aging factor to the reference aging factor; the sub-multiplication module is used for multiplying the ratio with the target basic data to obtain corrected target basic data. This idea of considering the ratio allows a more accurate determination of the corrected target base data.

In the embodiment of the application, the device further comprises a second acquisition unit and a storage unit, wherein the second acquisition unit is used for acquiring new aging factors obtained by calculation after determining target basic data corresponding to a conversion efficiency interval, adaptively switching the current basic data to the target basic data, adjusting the original row of the gas engine by adopting the target basic data and acquiring the current driving cycle to meet the conversion efficiency calculation condition of the three-way catalyst; the storage unit is used for storing the new aging factor in the memory before the ECU is powered down. That is, after the conversion efficiency calculation condition of the three-way catalyst is satisfied, a new aging factor is obtained, and preparation is made for calculation of the next driving cycle.

The gas engine emission control device comprises a processor and a memory, wherein the first acquisition unit, the determination unit, the processing unit and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions. The modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problem that the economy, the compliance and the dynamic performance cannot be considered because the matching of the whole life cycle of the three-way catalyst is met by adjusting the inner core parameters to solve the basic data of the same group of engines.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, wherein the device where the computer readable storage medium is located is controlled to execute a gas engine emission control method when the program runs.

Specifically, the gas engine emission control method includes:

the embodiment of the application provides electronic equipment, which comprises: the system comprises one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the gas engine emission control method in an embodiment of the application.

The embodiment of the application provides equipment, which comprises a processor, a memory and a program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the gas engine emission control method. The device herein may be a server, PC, PAD, cell phone, etc.

Specifically, the gas engine emission control method includes:

the application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with at least the following method steps:

It will be appreciated by those skilled in the art that the modules or steps of the application described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1) According to the gas engine emission control method, the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle is obtained, the conversion efficiency interval where the conversion efficiency of the three-way catalyst is located is determined, the target basic data corresponding to the conversion efficiency interval is determined, the current basic data is adaptively switched to the target basic data, the target basic data is adopted to adjust the original row of the gas engine, the purpose of adaptively adjusting the target basic data according to different conversion efficiencies is achieved, and the original row of the whole gas engine is adaptively adjusted, so that economical efficiency, compliance and dynamic performance are met. The problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst and cannot consider economical efficiency, compliance and dynamic performance is solved.

2) According to the gas engine emission control device, the first acquisition unit acquires the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle, the determination unit determines the conversion efficiency interval where the conversion efficiency of the three-way catalyst is located, the processing unit determines the target basic data corresponding to the conversion efficiency interval, the current basic data is adaptively switched to the target basic data, and the target basic data is adopted to adjust the original row of the gas engine, so that the aim of adaptively adjusting the target basic data according to different conversion efficiencies and then adaptively adjusting the original row of the whole gas engine is achieved, and the economical efficiency, the compliance and the dynamic performance are met. The problem that the same group of engine basic data can meet the matching of the whole life cycle of the three-way catalyst and cannot consider economical efficiency, compliance and dynamic performance is solved.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas engine emission control method, comprising:

obtaining the conversion efficiency of a three-way catalyst of a gas engine in the previous driving cycle;

determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located;

determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adopting the target basic data to adjust the original row of the gas engine so as to meet one of the following: the tail row of the gas engine meets an emission standard, the gas consumption of at least the current driving cycle is smaller than a preset gas consumption when the emission standard is met, and the power of the gas engine is at least within a preset power range when the emission standard is met;

the target basic data are data affecting an original exhaust gas of the gas engine, the original exhaust gas is an original exhaust amount of exhaust gas which is not purified by the three-way catalyst aftertreatment device, and the tail exhaust gas is a final exhaust amount of the exhaust gas which is purified by the three-way catalyst aftertreatment device.

2. The method of claim 1, wherein determining a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located comprises:

Under the condition that the conversion efficiency of the three-way catalyst is greater than or equal to a first conversion rate threshold value, determining a conversion efficiency interval in which the conversion efficiency is positioned as a first conversion rate interval, wherein the residual quantity of which the initial tail row corresponding to the first conversion rate interval meets and is superior to the emission standard is in a first residual quantity range;

determining that a conversion efficiency interval in which the conversion efficiency is located is a second conversion efficiency interval when the conversion efficiency of the three-way catalyst is greater than or equal to a second conversion rate threshold and less than the first conversion rate threshold, and the margin that the initial tail row corresponding to the second conversion rate interval meets and is superior to the emission standard is in a second margin range, wherein the minimum margin of the first margin range is greater than the maximum margin of the second margin range;

under the condition that the conversion efficiency of the three-way catalyst is smaller than the second conversion rate threshold value, determining a conversion efficiency interval in which the conversion efficiency is positioned as a third conversion rate interval, wherein at least part of emissions in an initial tail row corresponding to the third conversion rate interval do not meet the corresponding emission standard;

the initial tail rows are tail rows which are not subjected to self-adaptive adjustment, and the second conversion rate threshold value is smaller than the first conversion rate threshold value.

3. The method according to claim 2, characterized in that target base data corresponding to the conversion efficiency interval are determined and current base data are adaptively switched to the target base data, and the target base data are employed to adjust the bank of the gas engine such that one of the following is satisfied: the tail row of the gas engine meets the emission standard, the gas consumption of at least meeting the current driving cycle is smaller than the preset gas consumption when meeting the emission standard, and the power of at least meeting the gas engine when meeting the emission standard is within the preset power range, and the tail row of the gas engine comprises the following components:

when the conversion efficiency interval is the first conversion efficiency interval, switching the current basic data to a first group of target basic data, and adopting the first group of target basic data to control the original row of the gas engine to be in a first original row range, so that the tail row of the gas engine meets the emission standard, and the gas consumption meeting the current driving cycle is smaller than the preset gas consumption and the power of the gas engine is within the preset power range;

switching the current basic data to a second group of target basic data under the condition that the conversion efficiency interval is the second conversion efficiency interval, and adopting the second group of target basic data to control the original row of the gas engine to be in a second original row range so that the tail row of the gas engine meets the emission standard and the power of the gas engine is in the preset power range;

Switching the current base data to a third set of target base data and employing the third set of target base data to control the bank of the gas engine to be within a third bank range, such that the tail bank of the gas engine first meets the emission standard,

the maximum value of the third range of raw materials is smaller than the minimum value of the second range of raw materials, and the maximum value of the second range of raw materials is smaller than the minimum value of the first range of raw materials.

4. The method of claim 1, wherein adjusting the bank of gas machines using the target base data comprises:

determining an aging factor corresponding to a conversion efficiency of the three-way catalyst;

correcting the target basic data by adopting the aging factor to obtain corrected target basic data;

and adjusting the original row of the gas engine by adopting the corrected target basic data.

5. The method of claim 4, wherein determining an aging factor corresponding to a conversion efficiency of the three-way catalyst comprises:

And determining the aging factor according to the ratio of the oxygen storage amount of the three-way catalyst to the preset oxygen content.

6. The method of claim 4, wherein correcting the target base data using the aging factor to obtain corrected target base data comprises:

acquiring the ratio of the aging factor to a reference aging factor;

multiplying the ratio with the target basic data to obtain the corrected target basic data.

7. The method of claim 4, wherein after determining target base data corresponding to the conversion efficiency interval and adaptively switching current base data to the target base data, and adjusting the bank of the gas engine using the target base data, the method further comprises:

the new aging factor is stored in memory prior to powering down the ECU.

8. A gas engine emission control device, comprising:

a first acquisition unit for acquiring the conversion efficiency of the three-way catalyst of the gas engine in the previous driving cycle;

A determining unit, configured to determine a conversion efficiency interval in which the conversion efficiency of the three-way catalyst is located;

the processing unit is used for determining target basic data corresponding to the conversion efficiency interval, adaptively switching current basic data to the target basic data, and adopting the target basic data to adjust the original row of the gas engine so as to meet one of the following requirements: the tail row of the gas engine meets an emission standard, the gas consumption of at least the current driving cycle is smaller than a preset gas consumption when the emission standard is met, and the power of the gas engine is at least within a preset power range when the emission standard is met;

9. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein the program, when run, controls a device in which the computer-readable storage medium is located to execute the gas engine emission control method according to any one of claims 1 to 7.

10. An electronic device, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the gas engine emission control method of any of claims 1-7.