CN112648096A - Oil way deviation adjusting method, device, equipment and storage medium - Google Patents
Oil way deviation adjusting method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN112648096A CN112648096A CN202011406811.3A CN202011406811A CN112648096A CN 112648096 A CN112648096 A CN 112648096A CN 202011406811 A CN202011406811 A CN 202011406811A CN 112648096 A CN112648096 A CN 112648096A
- Authority
- CN
- China
- Prior art keywords
- fuel
- injection quantity
- fuel injection
- target
- target fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
- F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1482—Integrator, i.e. variable slope
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2454—Learning of the air-fuel ratio control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The application relates to the technical field of vehicle control, in particular to an oil way deviation adjusting method, device, equipment and storage medium. The method comprises the following steps: switching a current fuel used by a vehicle to a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel; determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel; and adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle. The fuel injection quantity adjusting parameters corresponding to the fuel types are set, and when the fuel is switched, the fuel injection quantity adjusting parameters matched with the current fuel type can be called to correct the oil way, so that the problem of oil way deviation under a single fuel mode is solved, and the potential series problems caused by oil way deterioration due to fuel switching are solved.
Description
Technical Field
The application relates to the technical field of vehicle control, in particular to an oil way deviation adjusting method, device, equipment and storage medium.
Background
The engine runs under different working conditions, and the requirements on the concentration of the mixed gas are different. An Electronic Control Unit (ECU) controls the amount of fuel injected according to different modes according to the operating conditions measured by the relevant sensors. During engine operation, the ECU calculates the amount of fuel injected mainly based on the intake air amount and the engine speed. In addition, the ECU also refers to operating parameters such as the opening degree of a throttle valve, the air inlet temperature, the water temperature of an engine, the altitude, the idling condition, the acceleration condition, the full-load condition and the like to correct the fuel injection quantity so as to improve the control precision. Because the operating parameters to be considered by the ECU are many, in order to simplify the calculation procedure of the ECU, the fuel injection quantity is generally divided into three parts, namely a basic fuel injection quantity, a correction quantity and an increment, and the results are calculated respectively. And then the three parts are superposed together to be used as the total fuel injection quantity to control the fuel injection of the fuel injector.
However, when the vehicle is operated under different conditions, due to the influence of idle air leakage, pre-control and air flow deviation, deviation of the oil path in different degrees is inevitably caused, and therefore potential problems such as engine fire and emission deterioration may be caused. The dual fuel vehicle usually uses a new fuel as the main fuel and uses the conventional fuel as the auxiliary fuel to complement the advantages, and the above problem becomes very prominent because the vehicle may run in two fuel modes.
Disclosure of Invention
The invention aims to solve the technical problem of oil way deviation caused by idling air leakage, pre-control, air flow deviation and the like of a vehicle type using multiple fuels.
In order to solve the technical problem, in a first aspect, an embodiment of the present application discloses a method for adjusting oil way deviation of a multi-fuel vehicle type, where the method includes:
switching a current fuel used by a vehicle to a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle.
Further, the target fuel injection quantity adjusting parameter is a preset adjusting parameter or an adjusting parameter determined according to a historical fuel injection quantity adjusting parameter.
Further, the determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type includes:
determining a historical fuel injection quantity adjusting parameter set of the target fuel according to the fuel type of the target fuel;
and determining the target fuel injection quantity adjusting parameter in the historical fuel injection quantity adjusting parameter set according to preset conditions.
Further, the adjusting parameter of the target fuel injection amount includes a first self-learning value and a second self-learning value, and the adjusting of the initial fuel injection amount according to the adjusting parameter of the target fuel injection amount to obtain the target fuel injection amount of the target fuel includes:
correcting the initial fuel injection quantity according to the first self-learning value to obtain a first correction value of fuel injection quantity;
and correcting the first correction value of the injected fuel amount according to the second self-learning value to obtain the target injected fuel amount of the target fuel.
Further, before the adjusting initial fuel injection quantity according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, the method further includes:
acquiring the current working condition of the vehicle;
and calculating to obtain the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle.
Further, the historical fuel injection quantity adjusting parameter is obtained by the following method:
acquiring a closed-loop regulating factor and a regulating standard value of an oxygen sensor in the vehicle; the closed-loop adjustment factor and the adjustment criteria value are determined during historical use of the vehicle;
determining a deviation value of the closed-loop regulating factor and the regulating standard value;
integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel;
and storing the fuel injection quantity adjusting parameters as historical fuel injection quantity adjusting parameters.
Further, the switching the current fuel used by the vehicle to the target fuel according to the fuel switching instruction comprises:
receiving a fuel switching instruction;
and analyzing target fuel information in the fuel switching command, and switching the current fuel used by the vehicle into the target fuel according to the target fuel information.
In a second aspect, the present application discloses an oil way deviation adjusting device for a multi-fuel vehicle, the device includes:
the fuel switching module is used for switching the current fuel used by the vehicle into a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
the target fuel injection quantity adjusting parameter determining module is used for determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and the target fuel injection quantity determining module is used for adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, and the initial fuel injection quantity is determined according to the current working condition of the vehicle.
In some possible embodiments, the fuel injection control device further comprises an adjustment parameter storage module, which is used for storing preset adjustment parameters and historical fuel injection amount adjustment parameters.
In some possible embodiments, the target fuel injection quantity adjustment parameter determination module is configured to determine a set of historical fuel injection quantity adjustment parameters of the target fuel according to the fuel type of the target fuel; and determining the target fuel injection quantity adjusting parameter in the historical fuel injection quantity adjusting parameter set according to preset conditions.
In some possible embodiments, the target fuel injection amount adjustment parameter includes a first self-learning value and a second self-learning value, and the target fuel injection amount determination module is configured to correct the initial fuel injection amount according to the first self-learning value to obtain a first correction value of fuel injection amount; and correcting the first correction value of the injected fuel amount according to the second self-learning value to obtain the target injected fuel amount of the target fuel.
In some possible embodiments, the system further comprises a current working condition obtaining module, configured to obtain a current working condition of the vehicle; and the initial fuel injection quantity calculation module is used for calculating the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle.
In some possible embodiments, the fuel injection quantity adjusting method further comprises a historical fuel injection quantity adjusting parameter determining module, wherein the historical fuel injection quantity adjusting parameter determining module is used for acquiring a closed-loop adjusting factor and an adjusting standard value of an oxygen sensor in the vehicle; the closed-loop adjustment factor and the adjustment criteria value are determined during historical use of the vehicle; determining a deviation value of the closed-loop regulating factor and the regulating standard value; integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel; and storing the fuel injection quantity adjusting parameters as historical fuel injection quantity adjusting parameters.
In some possible embodiments, the fuel switching module is to receive a fuel switching command; and analyzing target fuel information in the fuel switching command, and switching the current fuel used by the vehicle into the target fuel according to the target fuel information.
In a third aspect, an embodiment of the present application discloses an apparatus, which includes a processor and a memory, where at least one instruction or at least one program is stored in the memory, and the at least one instruction or the at least one program is loaded by the processor and executes the method for adjusting the oil path deviation for multiple fuel vehicle types as described above.
In a fourth aspect, an embodiment of the present application discloses a computer-readable storage medium, in which at least one instruction or at least one program is stored, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the oil way deviation adjusting method for multiple fuel vehicle types as described above.
The method, the device, the equipment and the storage medium for adjusting the oil circuit deviation have the following technical effects:
according to the oil way deviation adjusting method, aiming at vehicle types using various fuels, a plurality of groups of fuel injection quantity adjusting parameters corresponding to the fuel types are set. When the fuel used by the vehicle is switched, the fuel injection quantity adjusting parameter matched with the current fuel type is called to correct the oil way, so that the problem of oil way deviation under a single fuel mode is solved, and a potential series of problems caused by oil way deterioration due to fuel switching are solved. Under a relatively stable working condition, the actual air-fuel ratio at the oxygen sensor will slightly oscillate near 1, and the original emission of the engine will be obviously improved.
Drawings
In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of an air-fuel ratio versus raw emissions relationship provided by an embodiment of the present application;
FIG. 2 is a flow chart of an oil way deviation adjusting method for a multi-fuel vehicle type according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of a self-learning method for fuel injection quantity adjustment parameters according to an embodiment of the application;
FIG. 4 is a graph of self-learning values versus rotational speed according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating adjustment of fuel injection amount for different fuels for a vehicle according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an oil path deviation adjusting device for a multi-fuel vehicle according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or 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 server 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.
An air-fuel ratio λ of 1 is an ideal complete combustion state of the engine, and is the most important means for reducing the initial emission in the exhaust gas. Fig. 1 is a schematic diagram of a relationship between an air-fuel ratio and an original emission provided by an embodiment of the present application, and as shown in fig. 1, a post-treatment device in an exhaust system can achieve a more efficient catalytic reduction reaction in a narrow region near an ideal combustion operating point, at this time, the demand and supply of oxygen reach an equilibrium state, the emission of harmful gases will reach a minimum level, and it can be seen that the accuracy of an engine oil circuit is closely related to the emission level of exhaust gas.
According to the technical scheme for solving the oil way deviation of part of dual-fuel automobiles, the closed-loop adjusting factor of the front oxygen sensor and the deviation of 1 are integrated to obtain a self-learning value, and then the total fuel injection quantity is corrected, so that the oil way is adjusted. The scheme can effectively solve the problem of oil way deviation of the traditional gasoline engine, but when the gasoline engine is applied to a dual-fuel automobile, the situation that two kinds of fuel are respectively on the rich side and the lean side can occur under the comprehensive action of various factors, when the deviation is large, the fuel is suddenly switched, under the action of the previously acquired self-learning value, the oil way deviation is amplified, and the result is suitable for the contrary.
The embodiment of the application discloses an oil way deviation adjusting method for a multi-fuel vehicle type, and fig. 2 is a flow chart of the oil way deviation adjusting method for the multi-fuel vehicle type provided by the embodiment of the application, and as shown in fig. 2, the method comprises the following steps:
s201: switching a current fuel used by the vehicle to a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
in the embodiment of the application, the multi-fuel vehicle type can use various fuels as power sources, and the common multi-fuel vehicle type on the market at present is a dual-fuel vehicle type using methanol and gasoline. The multi-fuel vehicle model in the embodiment of the present application is not limited to a vehicle model using two fuels, and may be a vehicle model using more than two fuels. Optionally, the fuel switching is performed by comprehensively judging and selecting an optimal fuel by the ECU according to the running state of the engine, the fault condition of the core component, and the like. Specifically, the engine oil path control unit receives a fuel switching command sent by the ECU, analyzes target fuel information in the fuel switching command, and switches the current fuel used by the vehicle to the target fuel according to the target fuel information.
S203: determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
in the embodiment of the application, the oil injection quantity adjusting parameters of the corresponding fuel types are stored in the engine oil way control unit aiming at the fuels of different types. The target fuel information contains the fuel type of the target fuel, and corresponding target fuel injection quantity adjusting parameters are called according to the fuel type of the target fuel. For one fuel, the fuel injection quantity adjusting parameters stored in the engine oil way control unit are divided into two conditions, one condition is that the vehicle is a new vehicle just off the line, and the fuel injection quantity adjusting parameters are preset adjusting parameters preset for the fuel; the other type is a vehicle driven by using the fuel as a power source, wherein the fuel injection quantity adjusting parameter is a fuel injection quantity adjusting parameter which is stored in an engine oil way control unit and used for adjusting the fuel injection quantity when the vehicle historically injects the fuel, the adjusting parameter is obtained by self-learning under certain conditions, and then the adjusting parameter is stored in the engine oil way control unit as a historical fuel injection quantity adjusting parameter. Specifically, a plurality of sets of self-learning strategies are arranged in the engine oil way control unit, each fuel corresponds to one set of self-learning strategy, and the oil way is corrected along with different fuels respectively without mutual interference. When the engine runs by using one fuel, when the engine is not flushed with a carbon tank, the oxygen sensor is in a closed-loop adjusting state, and the conditions of water temperature, running working condition interval and the like are met, the engine oil way control unit can continuously correct the oil injection quantity adjusting parameters according to the current oil way performance, and updates and stores the oil injection quantity adjusting parameters into the engine oil way control unit in real time. If the fuel is suddenly switched at the moment, the fuel injection quantity adjusting parameter obtained based on the previous fuel oil circuit expression in the engine oil circuit control unit cannot be called. And acquiring historical fuel injection quantity adjusting parameters of the switched fuel stored by the engine oil way control unit based on the switched fuel type to adjust the fuel injection quantity. And then, new oil injection quantity adjusting parameters are obtained again through self-learning according to the current state of the engine to correct the oil way, and the oil injection quantity adjusting parameters are updated and stored in an oil way control unit of the engine in real time so as to be called at any time when needed later.
In the embodiment of the application, in the stable running process of the vehicle, the engine oil way control unit obtains the injection quantity adjusting parameter through self-learning to dynamically adjust the injection quantity of the fuel used by the current engine. However, when the vehicle is suddenly switched to another fuel, because the currently acquired closed-loop adjustment factor of the oxygen sensor is the closed-loop adjustment factor of the previous fuel, and the switched target fuel is not injected, the historical injection quantity adjustment parameter can be acquired as the target injection quantity adjustment parameter, and the injection quantity to be injected is adjusted, so that the problems of engine fire, emission deterioration and the like caused by oil way deviation are avoided.
Fig. 3 is a flowchart of a self-learning method for adjusting a fuel injection amount according to an embodiment of the present application, and as shown in fig. 3, the method includes:
s301: acquiring a closed-loop regulating factor and a regulating standard value of an oxygen sensor in a vehicle; the closed-loop regulating factor and the regulating standard value are determined during the historical use of the vehicle;
in the embodiment of the application, the oxygen sensor is a sensor used for detecting the concentration of oxygen in exhaust gas of certain equipment, sending a feedback signal to the engine oil way control unit, and controlling the increase and decrease of the oil injection quantity of the oil injector by the engine oil way control unit so as to control the air-fuel ratio of a mixed gas to be close to a theoretical value. The oxygen sensor is used to determine the excess air factor lambda in the exhaust gas. Optionally, the oxygen sensor can directly measure a specific value of the excess air coefficient λ, and then compare the value with the stoichiometric air-fuel ratio 1; alternatively, the oxygen sensor can determine the magnitude of the excess air ratio λ and the stoichiometric air-fuel ratio 1. Lambda is 1, which means that after full combustion, no surplus fuel and air exist; lambda is more than 1, oxygen is excessive, and the mixed gas is too dilute; lambda <1, oxygen is insufficient, and the mixed gas is too rich. Lambda is determined by the ratio of the number of atoms in the gas mixture. The combustion process does not change this ratio, so the lambda measured from the exhaust gas, whether or not the combustion is complete, is the same as the lambda measured in the mixture when unburned. Therefore, the initial fuel injection quantity is corrected by adopting a closed-loop regulating factor, but the fuel injection quantity deviation which continuously exists for a long time needs to be corrected by obtaining a fuel injection quantity regulating parameter through self-learning. And acquiring a closed-loop regulating factor and a regulating standard value of the oxygen sensor in the self-learning process to determine whether the last fuel injection amount is proper under the current engine load, namely whether the last fuel injection amount is completely combusted, so as to adjust the next fuel injection amount.
S303: determining a deviation value of the closed-loop regulating factor and the regulating standard value;
in the embodiment of the application, the deviation of the closed-loop regulating factor and the regulating standard value of the oxygen sensor is calculated to determine the increase of the fuel injection quantity or the reduction of the fuel injection quantity.
S305: integrating the deviation value to obtain an oil injection quantity adjusting parameter of the target fuel used by the vehicle;
in the embodiment of the application, the deviation value is integrated through a preset algorithm to obtain a new fuel injection quantity adjusting parameter, and the new fuel injection quantity adjusting parameter is used for adjusting the fuel injection quantity of fuel injection to be performed, so that the fuel injection quantity meets the target air-fuel ratio.
S307: and storing the fuel injection quantity adjusting parameters as historical fuel injection quantity adjusting parameters.
In the embodiment of the application, the fuel injection quantity adjusting parameter obtained through integration is stored as a historical fuel injection quantity adjusting parameter, and the fuel can be called when being switched into the fuel. Optionally, the fuel injection amount adjustment parameter obtained by integration is data updated in real time, and a group of fuel injection amount adjustment parameters obtained most recently is stored in a storage module of the engine oil path control unit. Optionally, a plurality of sets of historical fuel injection quantity adjusting parameters are stored in a storage module of the engine oil path control unit, and when the fuel is switched to the fuel, a set of historical fuel injection quantity adjusting parameters of the target fuel is determined according to the fuel type of the target fuel; and then determining a target fuel injection quantity adjusting parameter in the historical fuel injection quantity adjusting parameter set according to preset conditions. Optionally, the preset condition is that a historical fuel injection quantity adjusting parameter which is closer to the current vehicle working condition to a certain extent is selected from the historical fuel injection quantity adjusting parameter set as a target fuel injection quantity adjusting parameter; optionally, the preset condition is to calculate an average value of the historical fuel injection quantity adjusting parameters in the historical fuel injection quantity adjusting parameter set, and the average value is used as the target fuel injection quantity adjusting parameter; optionally, the preset condition is that the last stored historical fuel injection quantity adjusting parameter is selected from the historical fuel injection quantity adjusting parameter set as the target fuel injection quantity adjusting parameter.
S205: and adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle.
In the embodiment of the application, the engine oil way control unit acquires the current working condition of the vehicle and then calculates the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle. And after the target fuel injection quantity adjusting parameter is determined, adjusting the initial fuel injection quantity according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel. The target fuel injection quantity adjusting parameter comprises a first self-learning value and a second self-learning value, the first self-learning value is an addition self-learning value, and the second self-learning value is a multiplication self-learning value. The first self-learning value and the second self-learning value are obtained by calculating the deviation of a closed-loop regulating factor of the oxygen sensor and a standard value 1 under different working conditions by using certain fuel used by the vehicle and processing the deviation by two independent integrators. The integration process of the integrator is as follows: output ofnewOutput (output)old+ input x dT x k, where k reflects the integration speed, and may be adjusted as needed. Fig. 4 is a relation diagram of self-learning values and rotation speed provided by an embodiment of the application, and as shown in fig. 4, the first self-learning value is an addition self-learning value, and the self-learning value has a large influence on fuel injection quantity when the rotation speed of the engine is low, so that the fuel injection quantity is corrected by the addition self-learning value aiming at the problems of idle air leakage and pre-control deviation. And the second self-learning value is a multiplication self-learning value, and the self-learning value has a large influence on the fuel injection quantity when the rotating speed of the engine is low, so that the oil way is corrected by the multiplication self-learning value for the air flow deviation problem under the medium-load working condition of the engine.
And the final target fuel injection quantity of the target fuel is obtained by correcting the initial fuel injection quantity according to the first self-learning value to obtain a first correction value of fuel injection quantity and then correcting the first correction value of fuel injection quantity according to the second self-learning value. The specific calculation formula is as follows:
wherein A is a target fuel injection quantity;
λ 0 is a target air-fuel ratio;
lambda is a closed-loop adjustment factor;
a1 is the initial fuel injection quantity;
a2 is the transient condition fuel demand amount;
a3 is the canister purge fuel amount;
b is a correction factor and is 1 under the idle working condition;
c1 is a first self-learning value;
c2 is the second self-learned value.
In the embodiment of the application, after the vehicle runs for a long enough time in various fuel modes respectively, the engine oil path control unit stores a plurality of sets of historical oil injection quantity adjusting parameters obtained based on fuel used by the vehicle, namely a first self-learning value and a second self-learning value, and only the oil injection quantity adjusting parameters matched with the fuel type of target fuel switched by the vehicle in the engine oil path control unit are called no matter how frequently the vehicle is flamed out, started or switched by fuel afterwards, so that the problem of oil path deviation in a single fuel mode is solved, and a potential series problem caused by oil path deterioration due to fuel switching is solved. Fig. 5 is a schematic diagram illustrating adjustment of fuel injection amount of different fuels used by a vehicle according to an embodiment of the present application, and as shown in fig. 5, when the vehicle uses fuel a, the air-fuel ratio oscillates slightly around 1 by continuously adjusting fuel injection amount adjustment parameters through self-learning. When the vehicle is switched to fuel a again thereafter, the fuel injection amount is adjusted by acquiring the historical fuel injection amount adjustment parameter stored heretofore, and it can be seen from the figure that no large fluctuation occurs in the air-fuel ratio. The final effect achieved by the oil way deviation adjusting method is as follows: under a relatively stable working condition of the vehicle, the actual air-fuel ratio at the oxygen sensor slightly oscillates around 1, and the original emission of the engine is obviously improved.
The method completely improves the solution of the traditional gasoline vehicle model through a software method, namely, two sets of independent self-learning strategies are constructed, and oil ways are corrected respectively along with different fuel states without mutual interference. The dual-fuel vehicle type universal emission problem can be optimized only through software function improvement, and due to the fact that hardware change is not involved, the use cost is low, and if other manufacturers are involved, the dual-fuel vehicle type universal emission optimization method has the advantages when being popularized.
The embodiment of the application discloses oil circuit deviation adjusting device of many fuel motorcycle types, and figure 6 is the oil circuit deviation adjusting device schematic diagram of many fuel motorcycle types that this embodiment of application provided, as shown in figure 6, the device includes:
the fuel switching module 601 is used for switching the current fuel used by the vehicle into a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
a target fuel injection quantity adjusting parameter determining module 603, configured to determine a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and the target fuel injection quantity determining module 605 is configured to adjust an initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain a target fuel injection quantity of the target fuel, where the initial fuel injection quantity is determined according to the current working condition of the vehicle.
In some possible embodiments, the fuel injection control device further comprises an adjustment parameter storage module, which is used for storing preset adjustment parameters and historical fuel injection amount adjustment parameters.
In some possible embodiments, the target fuel injection quantity adjustment parameter determination module is configured to determine a set of historical fuel injection quantity adjustment parameters of the target fuel according to a fuel type of the target fuel; and determining a target fuel injection quantity adjusting parameter in the historical fuel injection quantity adjusting parameter set according to a preset condition.
In some possible embodiments, the target fuel injection quantity adjusting parameter comprises a first self-learning value and a second self-learning value, and the target fuel injection quantity determining module is used for correcting the initial fuel injection quantity according to the first self-learning value to obtain a first correction value of fuel injection quantity; and correcting the first correction value of the injected fuel according to the second self-learning value to obtain the target injected fuel quantity of the target fuel.
In some possible embodiments, the system further comprises a current working condition obtaining module, configured to obtain a current working condition of the vehicle; and the initial fuel injection quantity calculation module is used for calculating the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle.
In some possible embodiments, the fuel injection quantity regulation system further comprises a historical fuel injection quantity regulation parameter determination module, a fuel injection quantity regulation parameter determination module and a fuel injection quantity regulation parameter determination module, wherein the historical fuel injection quantity regulation parameter determination module is used for acquiring a closed-loop regulation factor and a regulation standard value of an oxygen sensor in a vehicle; the closed-loop regulating factor and the regulating standard value are determined during the historical use of the vehicle; determining a deviation value of the closed-loop regulating factor and the regulating standard value; integrating the deviation value to obtain an oil injection quantity adjusting parameter of the target fuel used by the vehicle; and storing the fuel injection quantity adjusting parameters as historical fuel injection quantity adjusting parameters.
In some possible embodiments, the fuel switching module is to receive a fuel switching command; and analyzing the target fuel information in the fuel switching command, and switching the current fuel used by the vehicle to the target fuel according to the target fuel information.
In some embodiments, functions of or modules included in the apparatus provided in the embodiments of the present application may be used to execute the method described in the above method embodiments, and specific implementation thereof may refer to the description of the above method embodiments, and for brevity, will not be described again here.
The embodiment of the application also discloses equipment which comprises a processor and a memory, wherein at least one instruction or at least one section of program is stored in the memory, and the at least one instruction or the at least one section of program is loaded by the processor and used for executing the oil way deviation adjusting method for the multi-fuel vehicle type.
In the embodiment of the present application, the memory may be used to store software programs and modules, and the processor executes various functional applications and data processing by operating the software programs and modules stored in the memory. The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs needed by functions and the like; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory may also include a memory controller to provide the processor access to the memory. As an example, the device is an in-vehicle computer, such as an ECU.
The embodiment of the application also discloses a computer-readable storage medium, wherein at least one instruction or at least one program is stored in the storage medium, and the at least one instruction or the at least one program is loaded and executed by a processor to realize the oil way deviation adjusting method for the multi-fuel vehicle type.
In an embodiment of the present application, the storage medium may be located in at least one network client of a plurality of network clients of a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
It should be noted that: the sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. And specific embodiments thereof have been described above. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An oil way deviation adjusting method for a multi-fuel vehicle type is characterized by comprising the following steps:
switching a current fuel used by a vehicle to a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle.
2. The oil circuit deviation adjustment method according to claim 1, wherein the target injection quantity adjustment parameter is a preset adjustment parameter or an adjustment parameter determined according to a historical injection quantity adjustment parameter.
3. The oil path deviation adjustment method according to claim 2, wherein the determining of the target injection quantity adjustment parameter of the target fuel according to the fuel type includes:
determining a historical fuel injection quantity adjusting parameter set of the target fuel according to the fuel type of the target fuel;
and determining the target fuel injection quantity adjusting parameter in the historical fuel injection quantity adjusting parameter set according to preset conditions.
4. The oil circuit deviation adjustment method according to claim 3, wherein the target fuel injection quantity adjustment parameter includes a first self-learning value and a second self-learning value, and the adjusting of the initial fuel injection quantity according to the target fuel injection quantity adjustment parameter to obtain the target fuel injection quantity of the target fuel comprises:
correcting the initial fuel injection quantity according to the first self-learning value to obtain a first correction value of fuel injection quantity;
and correcting the first correction value of the injected fuel amount according to the second self-learning value to obtain the target injected fuel amount of the target fuel.
5. The oil circuit deviation adjusting method according to claim 1, wherein before the adjusting the initial fuel injection quantity according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, the method further comprises:
acquiring the current working condition of the vehicle;
and calculating to obtain the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle.
6. The oil circuit deviation adjusting method according to claim 2, wherein the historical fuel injection quantity adjusting parameter is obtained by:
acquiring a closed-loop regulating factor and a regulating standard value of an oxygen sensor in the vehicle; the closed-loop adjustment factor and the adjustment criteria value are determined during historical use of the vehicle;
determining a deviation value of the closed-loop regulating factor and the regulating standard value;
integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel;
and storing the fuel injection quantity adjusting parameters as historical fuel injection quantity adjusting parameters.
7. The oil path deviation adjustment method according to claim 1, wherein the switching of the current fuel used by the vehicle to the target fuel according to the fuel switching instruction includes:
receiving a fuel switching instruction;
and analyzing target fuel information in the fuel switching command, and switching the current fuel used by the vehicle into the target fuel according to the target fuel information.
8. An oil path deviation adjusting apparatus of a multi-fuel vehicle type, characterized in that the apparatus comprises:
the fuel switching module is used for switching the current fuel used by the vehicle into a target fuel according to a fuel switching instruction, wherein the fuel type of the target fuel is different from that of the current fuel;
the target fuel injection quantity adjusting parameter determining module is used for determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and the target fuel injection quantity determining module is used for adjusting the initial fuel injection quantity of the target fuel according to the target fuel injection quantity adjusting parameter to obtain the target fuel injection quantity of the target fuel, and the initial fuel injection quantity is determined according to the current working condition of the vehicle.
9. An apparatus, characterized in that the apparatus comprises a processor and a memory, wherein at least one instruction or at least one program is stored in the memory, and the at least one instruction or the at least one program is loaded by the processor and executes the method for adjusting the deviation of the oil circuit of the multi-fuel vehicle type according to any one of claims 1 to 7.
10. A computer-readable storage medium, wherein at least one instruction or at least one program is stored in the storage medium, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the method for adjusting the deviation of the oil path of a multi-fuel vehicle type according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406811.3A CN112648096B (en) | 2020-12-04 | 2020-12-04 | Oil way deviation adjusting method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406811.3A CN112648096B (en) | 2020-12-04 | 2020-12-04 | Oil way deviation adjusting method, device, equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112648096A true CN112648096A (en) | 2021-04-13 |
| CN112648096B CN112648096B (en) | 2023-05-23 |
Family
ID=75350701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011406811.3A Active CN112648096B (en) | 2020-12-04 | 2020-12-04 | Oil way deviation adjusting method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648096B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306573A (en) * | 2022-08-29 | 2022-11-08 | 联合汽车电子有限公司 | Oil way self-learning method and device, terminal and server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635450A (en) * | 2012-04-26 | 2012-08-15 | 奇瑞汽车股份有限公司 | Automobile dual-fuel switch control method and device |
| CN108930597A (en) * | 2018-07-02 | 2018-12-04 | 武汉理工大学 | Ship use intermediate speed dual fuel engine control method and system based on rapid control prototyping |
| CN109026374A (en) * | 2018-07-25 | 2018-12-18 | 福州大学 | Natural gas Diesel Dual-Fuel Engine and control method based on excess air coefficient |
| CN110296012A (en) * | 2019-06-29 | 2019-10-01 | 潍柴动力股份有限公司 | A kind of engine fuel injection control method, device, storage medium and computer equipment |
| CN110805498A (en) * | 2019-11-11 | 2020-02-18 | 奇瑞汽车股份有限公司 | Engine fuel correction control method |
-
2020
- 2020-12-04 CN CN202011406811.3A patent/CN112648096B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635450A (en) * | 2012-04-26 | 2012-08-15 | 奇瑞汽车股份有限公司 | Automobile dual-fuel switch control method and device |
| CN108930597A (en) * | 2018-07-02 | 2018-12-04 | 武汉理工大学 | Ship use intermediate speed dual fuel engine control method and system based on rapid control prototyping |
| CN109026374A (en) * | 2018-07-25 | 2018-12-18 | 福州大学 | Natural gas Diesel Dual-Fuel Engine and control method based on excess air coefficient |
| CN110296012A (en) * | 2019-06-29 | 2019-10-01 | 潍柴动力股份有限公司 | A kind of engine fuel injection control method, device, storage medium and computer equipment |
| CN110805498A (en) * | 2019-11-11 | 2020-02-18 | 奇瑞汽车股份有限公司 | Engine fuel correction control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306573A (en) * | 2022-08-29 | 2022-11-08 | 联合汽车电子有限公司 | Oil way self-learning method and device, terminal and server |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112648096B (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2451809C1 (en) | Control device for ice | |
| US7620488B2 (en) | Engine control apparatus | |
| US7013873B2 (en) | Apparatus and method for controlling fuel injection in internal combustion engine | |
| JPH07253039A (en) | Fuel controller using adaptive addend | |
| KR20050065401A (en) | Control device for internal combustion engine | |
| JP2008309036A (en) | Fuel estimation device | |
| JP4007384B2 (en) | Air-fuel ratio control device for internal combustion engine | |
| RU2717476C2 (en) | Method (versions) and system for engine control based on assessment of air-fuel ratio by means of oxygen sensor with variable voltage | |
| JPH0617693A (en) | Electronic control system for internal combustion engine | |
| US9644572B2 (en) | Control device for internal combustion engine | |
| JP5373687B2 (en) | Bi-fuel engine idle speed control device | |
| CN112648096B (en) | Oil way deviation adjusting method, device, equipment and storage medium | |
| JP5427727B2 (en) | Engine control system | |
| WO2013153626A1 (en) | Device for controlling internal combustion engine | |
| US6947826B2 (en) | Method for compensating injection quality in each individual cylinder in internal combustion engines | |
| JP2008215320A (en) | Torque control system | |
| US20090157282A1 (en) | Air-Fuel Ratio Control Apparatus by Sliding Mode Control of Engine | |
| US20200290453A1 (en) | Method for adapting a fuel quantity to be injected in an internal combustion engine | |
| JP5273224B2 (en) | Air-fuel ratio control device for internal combustion engine | |
| US20160305359A1 (en) | Fuel injection control device | |
| GB2468129A (en) | A method for operating an internal combustion engine | |
| JP5056640B2 (en) | Engine fuel supply system | |
| JP2009264115A (en) | Control device for multi-cylinder internal combustion engine | |
| JP2007218267A (en) | Air/fuel ratio control device of internal combustion engine | |
| US7100361B2 (en) | Method for operating an internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210531 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Applicant after: GEELY AUTOMOBILE RESEARCH INSTITUTE (NINGBO) Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Applicant before: NINGBO YUANJING AUTO PARTS Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |