CN112648096B - Oil way deviation adjusting method, device, equipment and storage medium - Google Patents
Oil way deviation adjusting method, device, equipment and storage medium Download PDFInfo
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- CN112648096B CN112648096B CN202011406811.3A CN202011406811A CN112648096B CN 112648096 B CN112648096 B CN 112648096B CN 202011406811 A CN202011406811 A CN 202011406811A CN 112648096 B CN112648096 B CN 112648096B
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- Combustion & Propulsion (AREA)
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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present disclosure relates to the field of vehicle control technologies, and in particular, to a method, an apparatus, a device, and a storage medium for adjusting oil path deviation. The method comprises the following steps: switching a current fuel used by a 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; determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel; and regulating the initial fuel injection quantity of the target fuel according to the target fuel injection quantity regulating 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. And when the fuel is switched, the fuel injection quantity adjusting parameters matched with the current fuel type are called to correct the oil way, so that the problem of oil way deviation in a single fuel mode is solved, and the potential series of problems caused by the deterioration of the oil way due to the fuel switching are also solved.
Description
Technical Field
The present disclosure relates to the field of vehicle control technologies, and in particular, to a method, an apparatus, a device, and a storage medium for adjusting oil path deviation.
Background
The engine runs under different working conditions, and the requirements on the concentration of the mixed gas are different. The electronic control unit (Electronic Control Unit, ECU) controls the injection quantity in different ways according to the operation conditions measured by the relevant sensors. In engine operation, the ECU calculates the fuel injection amount mainly from the intake air amount and the engine speed. In addition, the ECU also refers to the throttle opening, the air inlet temperature, the engine water temperature, the altitude, the idle speed working condition, the acceleration working condition, the full load working condition and other operation parameters to correct the oil injection quantity, so that the control precision is improved. Because of the many operating parameters that the ECU needs to consider, in order to simplify the calculation procedure of the ECU, the fuel injection amount is generally divided into three parts, i.e., a basic fuel injection amount, a correction amount, and an increment, and the results are calculated separately. And then the three parts are overlapped together to serve as the total injection quantity to control the injection of the fuel injector.
However, when the vehicle runs under different working conditions, the oil paths are inevitably caused to deviate to different degrees due to the influences of idle leakage, pre-control and air flow deviation, so that potential problems such as engine fire, emission deterioration and the like can be caused. Whereas dual fuel vehicles typically use a new fuel as the main fuel and a conventional fuel as the auxiliary fuel for complementary benefits, the above-described problems become significant because the vehicle may operate in two fuel modes.
Disclosure of Invention
The invention aims to solve the technical problems of oil path deviation caused by idle speed air leakage, pre-control, air flow deviation and the like of a vehicle type using multiple fuels.
In order to solve the above technical problems, in a first aspect, an embodiment of the present application discloses a method for adjusting oil path deviation of a multi-fuel vehicle model, the method includes:
switching a current fuel used by a 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;
determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel;
and regulating the initial fuel injection quantity of the target fuel according to the target fuel injection quantity regulating 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 the historical fuel injection quantity adjusting parameter.
Further, the determining the 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 regulating parameter in the historical fuel injection quantity regulating parameter set according to a preset condition.
Further, the target fuel injection amount adjustment parameter includes a first self-learning value and a second self-learning value, and the adjusting the initial fuel injection amount according to the target fuel injection amount adjustment parameter to obtain the target fuel injection amount of the target fuel includes:
correcting the initial oil injection quantity according to the first self-learning value to obtain a first corrected oil injection quantity value;
and correcting the first corrected value of the fuel injection quantity according to the second self-learning value to obtain the target fuel injection quantity of the target fuel.
Further, before the initial fuel injection amount is adjusted according to the target fuel injection amount adjustment parameter to obtain the target fuel injection amount 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 oil injection quantity adjusting parameter is obtained by the following method:
acquiring a closed-loop adjustment factor and an adjustment standard value of an oxygen sensor in the vehicle; the closed loop adjustment factor and the adjustment criteria are determined during historical use of the vehicle;
determining a deviation value of the closed loop adjustment factor from the adjustment standard value;
integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel;
and storing the oil injection quantity adjusting parameter as a historical oil injection quantity adjusting parameter.
Further, the switching 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 instruction, and switching the current fuel used by the vehicle into target fuel according to the target fuel information.
In a second aspect, an embodiment of the present application discloses an oil circuit deviation adjustment device for a multi-fuel vehicle model, 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, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle.
In some possible embodiments, the method further comprises a regulation parameter storage module for storing preset regulation parameters and historical injection quantity regulation parameters.
In some possible embodiments, the target fuel injection amount adjustment parameter determination module is configured to determine a historical fuel injection amount adjustment parameter set of the target fuel according to a fuel type of the target fuel; and determining the target fuel injection quantity regulating parameter in the historical fuel injection quantity regulating parameter set according to a preset condition.
In some possible implementations, the target fuel injection quantity adjusting parameter includes a first self-learning value and a second self-learning value, and the target fuel injection quantity determining module is configured to correct the initial fuel injection quantity according to the first self-learning value to obtain a first corrected fuel injection quantity value; and correcting the first corrected value of the fuel injection quantity according to the second self-learning value to obtain the target fuel injection quantity of the target fuel.
In some possible embodiments, the vehicle further comprises a current working condition acquisition module, configured to acquire 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 method further comprises a historical fuel injection quantity adjustment parameter determination module for obtaining a closed-loop adjustment factor and an adjustment standard value of an oxygen sensor in the vehicle; the closed loop adjustment factor and the adjustment criteria are determined during historical use of the vehicle; determining a deviation value of the closed loop adjustment factor from the adjustment standard value; integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel; and storing the oil injection quantity adjusting parameter as a historical oil injection quantity adjusting parameter.
In some possible implementations, the fuel switch module is to receive a fuel switch command; and analyzing target fuel information in the fuel switching instruction, and switching the current fuel used by the vehicle into target fuel according to the target fuel information.
In a third aspect, an embodiment of the present application discloses an apparatus, where the apparatus includes a processor and a memory, where at least one instruction or at least one program is stored in the memory, where 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 of the multi-fuel vehicle model as described above.
In a fourth aspect, embodiments of the present application disclose a computer readable storage medium having at least one instruction or at least one program stored therein, the at least one instruction or at least one program loaded and executed by a processor to implement the method for adjusting an oil circuit deviation of a multi-fuel vehicle type as described above.
The oil way deviation adjusting method, the oil way deviation adjusting device, the oil way deviation adjusting equipment and the storage medium have the following technical effects:
according to the oil way deviation adjusting method, multiple groups of oil injection quantity adjusting parameters corresponding to the fuel types are set for vehicle types using multiple fuels. 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 in a single fuel mode is solved, and the potential series of problems caused by the deterioration of the oil way due to the fuel switching are also solved. Under relatively stable working conditions, the actual air-fuel ratio at the oxygen sensor is slightly oscillated around 1, and the original emission of the engine is obviously improved.
Drawings
In order to more clearly illustrate the technical solutions and advantages of embodiments of the present application or of the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the prior art descriptions, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an air-fuel ratio versus original emissions relationship provided in an embodiment of the present application;
fig. 2 is a flowchart of an oil circuit deviation adjustment method for a multi-fuel vehicle type according to an embodiment of the present application;
FIG. 3 is a flowchart of a self-learning method for adjusting parameters of fuel injection amount according to an embodiment of the present disclosure;
FIG. 4 is a graph of the relationship between the self-learning value and the rotation speed according to the embodiment of the present application;
FIG. 5 is a schematic diagram of fuel injection amount adjustment for a vehicle using different fuels according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an oil circuit deviation adjusting device for a multi-fuel vehicle according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
It should be noted that the terms "first," "second," and the like in the description and 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 such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The air-fuel ratio lambda of 1 is the ideal complete combustion state of the engine and is the most important means for reducing the original emissions in the exhaust gas. Fig. 1 is a schematic diagram of a relationship between an air-fuel ratio and an original emission, as shown in fig. 1, in an exhaust system in a narrow region near an ideal combustion operating point, a post-treatment device can implement a more efficient catalytic reduction reaction, at this time, oxygen demand and supply reach an equilibrium state, and harmful gas emission will reach a minimum level, so that the accuracy of an engine oil path is closely related to an exhaust emission level.
According to the technical scheme for solving the oil way deviation of the part of dual-fuel automobile, the deviation between the closed-loop adjusting factor of the front oxygen sensor and 1 is integrated, and the total fuel injection quantity is corrected after the self-learning value is obtained, 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 scheme is applied to a dual-fuel automobile, the condition that two fuels are respectively positioned on two rich sides and two lean sides can possibly occur under the comprehensive action of various factors, when the deviation is large, the fuels are suddenly switched, and under the action of the self-learning value acquired before, the oil way deviation is amplified, so that the result is proper and the contrary.
The embodiment of the application discloses an oil circuit deviation adjusting method of a multi-fuel vehicle type, and fig. 2 is a flowchart of the oil circuit deviation adjusting method of the multi-fuel vehicle type, as shown in fig. 2, and the method includes:
s201: switching the current fuel used by the vehicle into a target fuel according to the 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 multi-fuel vehicle type commonly seen in the market at present is a dual-fuel vehicle type using methanol and gasoline. The multi-fuel vehicle type in the embodiment of the application is not limited to the vehicle type using two fuels, but may be a vehicle type using more than two fuels. Alternatively, 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 parts and the like. Specifically, the engine oil path control unit receives a fuel switching instruction sent by the ECU, then analyzes target fuel information in the fuel switching instruction, and switches current fuel used by the vehicle into 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 fuel injection quantity adjusting parameters of corresponding fuel types are stored in the engine oil way control unit aiming at different types of fuels. The target fuel information contains the fuel type of the target fuel, and the corresponding target fuel injection quantity adjusting parameter is 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 cases, wherein one is a new vehicle which is just off line, and the fuel injection quantity adjusting parameters are preset adjusting parameters preset for the fuel; another is a vehicle that has been driven by using the fuel as a power source, in which case the injection amount adjustment parameter is an injection amount adjustment parameter for adjusting the injection amount when the vehicle is injecting the fuel in the history stored in the engine oil passage control unit, the adjustment parameter being obtained by self-learning under certain conditions, and the adjustment parameter being stored in the engine oil passage control unit as a history injection amount adjustment 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 by following different fuels respectively without mutual interference. When the engine is not in a carbon tank flushing state and the oxygen sensor is in a closed-loop regulation state and meets the conditions of water temperature, operation working condition interval and the like in the running process of the engine by using one fuel, the engine oil way control unit continuously corrects the oil injection quantity regulation parameters according to the current oil way performance and updates and stores the oil injection quantity regulation parameters in the engine oil way control unit in real time. If the fuel is suddenly switched at this time, the fuel injection quantity adjusting parameter obtained based on the previous fuel oil way performance in the engine oil way 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 types to adjust the fuel injection quantity. And then, acquiring new oil injection quantity adjusting parameters according to the current state of the engine by self-learning again to correct the oil way, and updating and storing the oil injection quantity adjusting parameters in an engine oil way control unit in real time so as to be called at any time when needed later.
In the embodiment of the application, during the stable running process of the vehicle, the engine oil way control unit dynamically adjusts the fuel injection quantity of the fuel used by the current engine through obtaining the fuel injection quantity adjusting parameter through self-learning. However, when the vehicle suddenly switches to another fuel, since the closed-loop adjustment factor of the current acquired oxygen sensor is the closed-loop adjustment factor of the previous fuel, and the switched target fuel is not yet injected, the historical injection quantity adjustment parameter can be acquired as the target injection quantity adjustment parameter at this time, and the injection quantity to be performed is adjusted, so that the problems of engine fire, emission deterioration and the like caused by oil path deviation are avoided.
Fig. 3 is a flowchart of a self-learning method for fuel injection quantity adjustment parameters according to an embodiment of the present application, as shown in fig. 3, where the method includes:
s301: acquiring a closed-loop adjusting factor and an adjusting standard value of an oxygen sensor in a vehicle; the closed loop adjustment factor and the adjustment standard value are determined during historical use of the vehicle;
in this embodiment of the present application, the oxygen sensor is a sensor for detecting the concentration of oxygen in exhaust gas of a device, sending a feedback signal to the engine oil path control unit, and controlling the increase or decrease of the fuel injection amount of the fuel injector by the engine oil path control unit, so as to control the air-fuel ratio of the mixture to be near the theoretical value. The oxygen sensor is used to determine the excess air ratio lambda in the exhaust gas. Alternatively, the oxygen sensor can directly measure a specific value of the excess air ratio λ and then compare 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.λ=1 means that there is no excess of fuel and air after full combustion; lambda >1 is excessive oxygen, and the mixed gas is too thin; lambda <1 indicates insufficient oxygen and the mixture is too rich. Lambda is determined by the ratio of the number of various atoms in the mixture. The combustion process does not change this ratio, so lambda measured from the exhaust gas is the same as lambda measured in the mixture when unburned, regardless of whether combustion is complete. Therefore, the closed-loop adjustment factor is adopted to correct the initial fuel injection quantity, but the fuel injection quantity deviation which exists continuously for a long time needs to be corrected by obtaining the fuel injection quantity adjustment parameter through self-learning. And acquiring a closed-loop adjusting factor and an adjusting standard value of the oxygen sensor in a self-learning process to determine whether the last oil injection quantity is proper under the current engine load, namely whether the last oil injection is completely combusted, so as to adjust the next oil injection quantity accordingly.
S303: determining a deviation value of the closed loop adjusting factor and an adjusting standard value;
in the embodiment of the application, the fuel injection amount is increased or decreased according to the deviation of the closed-loop adjustment factor and the adjustment standard value of the oxygen sensor.
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 the fuel injection to be performed, so that the fuel injection quantity meets the target air-fuel ratio.
S307: and storing the oil injection quantity adjusting parameter as a historical oil injection quantity adjusting parameter.
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 can be called when the fuel is switched into the fuel. Optionally, the fuel injection quantity adjusting parameters obtained through integration are updated data in real time, and a group of fuel injection quantity adjusting parameters obtained latest are stored in a storage module of the engine oil way control unit. Optionally, a plurality of groups of historical oil injection quantity adjusting parameters are stored in a storage module of the engine oil circuit control unit, and when the fuel is switched to the fuel, a historical oil injection quantity adjusting parameter set of the target fuel is determined according to the fuel type of the target fuel; and then determining a target fuel injection quantity regulating parameter in the historical fuel injection quantity regulating parameter set according to the preset condition. Optionally, the preset condition is that a historical oil injection quantity adjusting parameter which is more than a certain degree close to the current vehicle working condition is selected from a historical oil injection quantity adjusting parameter set to serve as a target oil injection quantity adjusting parameter; optionally, the preset condition is that an average value of historical oil injection quantity adjusting parameters in the historical oil injection quantity adjusting parameter set is calculated, and the average value is used as a target oil 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 to serve as the target fuel injection quantity adjusting parameter.
S205: and regulating the initial fuel injection quantity of the target fuel according to the target fuel injection quantity regulating 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 obtains 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 oil injection quantity adjusting parameter is determined, adjusting the initial oil injection quantity according to the target oil injection quantity adjusting parameter to obtain the target oil injection quantity of the target fuel. The target fuel injection quantity regulating parameter comprises a first self-learning value and a second self-learning value, wherein the first self-learning value is additionThe second self-learning value is a multiplicative self-learning value. The first self-learning value and the second self-learning value are obtained by calculating the deviation between the closed-loop regulating factor of the oxygen sensor and the standard value 1 of certain fuel used by the vehicle under different working conditions and processing the closed-loop regulating factor and the standard value by two independent integrators. The integrating process of the integrator is as follows: output of new Output =output old +input×dt×k, where k reflects the integration speed, and can be adjusted as needed. Fig. 4 is a graph of a relation between a self-learning value and a rotation speed, which is provided in an embodiment of the present application, as shown in fig. 4, the first self-learning value is an additive self-learning value, and the self-learning value has a larger influence on the fuel injection quantity when the rotation speed of the engine is low, so that the fuel injection quantity is corrected by adopting the additive self-learning value for the problems of idle gas leakage and pre-control deviation. The second self-learning value is a multiplicative self-learning value, and the self-learning value has larger influence on the fuel injection quantity when the engine speed is lower, so that the oil circuit is corrected through the multiplicative self-learning value for the problem of air flow deviation in medium-load working conditions of the engine.
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 corrected value of the fuel injection quantity, and then correcting the first corrected value of the fuel injection quantity according to the second self-learning value. The specific calculation formula is as follows:
wherein A is the target oil injection quantity;
λ0 is the target air-fuel ratio;
lambda is a closed loop adjustment factor;
a1 is the initial oil injection quantity;
a2 is the fuel quantity required by the transitional working condition;
a3 is the carbon tank flushing fuel quantity;
b is a correction factor, and is 1 under the idle working condition;
c1 is a first self-learned value;
c2 is a second self-learned value.
In the embodiment of the application, after the vehicle runs in multiple fuel modes respectively for a long time, the engine oil way control unit stores multiple sets of historical fuel injection quantity adjusting parameters acquired based on the fuel used by the vehicle, namely a first self-learning value and a second self-learning value, no matter how the vehicle is flameout, started or how frequently the fuel is switched, only the fuel injection quantity adjusting parameters matched with the fuel type of the target fuel switched by the vehicle in the engine oil way control unit are called, so that the problem of oil way deviation in a single fuel mode is solved, and the potential series of problems brought after the fuel is deteriorated due to fuel switching are solved. Fig. 5 is a schematic diagram of fuel injection quantity adjustment of a vehicle using different fuels according to an embodiment of the present application, and as shown in fig. 5, when the vehicle uses fuel a, the fuel injection quantity adjustment parameter is continuously adjusted by self-learning, so that the air-fuel ratio oscillates slightly around 1. When the vehicle is thereafter switched to fuel a again, the fuel injection amount is adjusted by acquiring the previously stored historical fuel injection amount adjustment parameter, and it can be seen from the figure that no large fluctuation in the air-fuel ratio occurs. The final effect achieved by the oil way deviation adjusting method is as follows: under the relatively stable working condition of the vehicle, the actual air-fuel ratio at the oxygen sensor is slightly oscillated around 1, and the original emission of the engine is obviously improved.
The patent improves the solution of the traditional gasoline vehicle type completely through a software method, namely, two independent self-learning strategies are constructed to respectively correct the oil way along with different fuel states, and mutual interference is avoided. This patent only can optimize the ubiquitous emission problem of dual fuel motorcycle type through the software function improvement, because do not involve the hardware change, use cost is lower, if involve other producers, can be very advantaged in popularization.
The embodiment of the application discloses an oil circuit deviation adjusting device of multi-fuel motorcycle type, fig. 6 is a schematic diagram of an oil circuit deviation adjusting device of multi-fuel motorcycle type that the embodiment of the application provided, as shown in fig. 6, the device includes:
a fuel switching module 601, configured to switch a current fuel used by the vehicle to a target fuel according to a fuel switching instruction, where a fuel type of the target fuel is different from a fuel type of the current fuel;
a target fuel injection amount adjustment parameter determining module 603, configured to determine a target fuel injection amount adjustment parameter of the target fuel according to a fuel type of the target fuel;
the target fuel injection amount determining module 605 is configured to adjust an initial fuel injection amount of the target fuel according to the target fuel injection amount adjustment parameter, so as to obtain a target fuel injection amount of the target fuel, where the initial fuel injection amount is determined according to a current working condition of the vehicle.
In some possible embodiments, the method further comprises a regulation parameter storage module for storing preset regulation parameters and historical injection quantity regulation parameters.
In some possible embodiments, the target fuel injection amount adjustment parameter determination module is configured to determine a historical fuel injection amount adjustment parameter set of the target fuel according to a fuel type of the target fuel; and determining a target oil injection quantity regulating parameter in the historical oil injection quantity regulating parameter set according to a preset condition.
In some possible implementations, the target fuel injection quantity adjusting parameter includes a first self-learning value and a second self-learning value, and the target fuel injection quantity determining module is configured to correct the initial fuel injection quantity according to the first self-learning value to obtain a first corrected fuel injection quantity value; and correcting the first corrected value of the fuel injection quantity according to the second self-learning value to obtain the target fuel injection quantity of the target fuel.
In some possible embodiments, the vehicle further comprises a current working condition acquisition module, configured to acquire a current working condition of the vehicle; and the initial fuel injection quantity calculation module is used for calculating and obtaining the initial fuel injection quantity of the target fuel according to the current working condition of the vehicle.
In some possible embodiments, the method further comprises a historical fuel injection quantity adjusting parameter determining module 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 standard value are determined during historical use of the vehicle; determining a deviation value of the closed loop adjusting factor and an adjusting 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 oil injection quantity adjusting parameter as a historical oil injection quantity adjusting parameter.
In some possible implementations, the fuel switch module is to receive a fuel switch command; and analyzing the target fuel information in the fuel switching instruction, and switching the current fuel used by the vehicle into the target fuel according to the target fuel information.
In some embodiments, functions or modules included in the apparatus provided in the embodiments of the present application may be used to perform the methods described in the foregoing method embodiments, and specific implementations thereof may refer to descriptions of the foregoing method embodiments, which are not repeated herein for brevity.
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 processor loads and executes the oil circuit deviation adjusting method of the multi-fuel vehicle type.
In the embodiment of the application, the memory may be used for storing software programs and modules, and the processor executes the software programs and modules stored in the memory to perform various functional applications and data processing. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for functions, and the like; the storage data area may store data created according to the use of the terminal, etc. In addition, 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 access to the memory by the processor. As one example, the device is a vehicle-mounted 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 section of program is stored in the storage medium, and the at least one instruction or the at least one section of program is loaded and executed by a processor to realize the oil way deviation adjusting method of 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 the computer network. Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: the foregoing sequence of the embodiments of the present application is only for describing, and does not represent the advantages and disadvantages of the embodiments. And the foregoing description has been directed to specific embodiments of this specification. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can 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 are also possible or may be advantageous.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments in part.
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 for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the present application is not intended to limit the invention to the particular embodiments of the present application, but to limit the scope of the invention to the particular embodiments of the present application.
Claims (9)
1. The method for adjusting the oil way deviation of the multi-fuel vehicle type is characterized by comprising the following steps of:
switching a current fuel used by a 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;
determining a target fuel injection quantity adjusting parameter of the target fuel according to the fuel type of the target fuel; the target oil injection quantity adjusting parameter is a preset adjusting parameter or an adjusting parameter determined according to the historical oil injection quantity adjusting parameter;
and regulating the initial fuel injection quantity of the target fuel according to the target fuel injection quantity regulating 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 passage deviation adjusting method according to claim 1, characterized in that the determining a target injection amount 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 regulating parameter in the historical fuel injection quantity regulating parameter set according to a preset condition.
3. The oil passage deviation adjusting method according to claim 2, characterized in that the target injection amount adjusting parameter includes a first self-learning value and a second self-learning value, and the adjusting the initial injection amount according to the target injection amount adjusting parameter obtains a target injection amount of the target fuel includes:
correcting the initial oil injection quantity according to the first self-learning value to obtain a first corrected oil injection quantity value;
and correcting the first corrected value of the fuel injection quantity according to the second self-learning value to obtain the target fuel injection quantity of the target fuel.
4. The oil passage deviation adjusting method according to claim 1, characterized by further comprising, before the initial fuel injection amount is adjusted according to the target fuel injection amount adjusting parameter to obtain the target fuel injection amount of the target fuel:
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.
5. The oil passage deviation adjusting method according to claim 1, characterized in that the historical injection amount adjusting parameter is obtained by:
acquiring a closed-loop adjustment factor and an adjustment standard value of an oxygen sensor in the vehicle; the closed loop adjustment factor and the adjustment criteria are determined during historical use of the vehicle;
determining a deviation value of the closed loop adjustment factor from the adjustment standard value;
integrating the deviation value to obtain an oil injection quantity adjusting parameter of the vehicle using the target fuel;
and storing the oil injection quantity adjusting parameter as a historical oil injection quantity adjusting parameter.
6. The oil passage deviation adjusting method according to claim 1, characterized in that 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 instruction, and switching the current fuel used by the vehicle into target fuel according to the target fuel information.
7. An oil circuit deviation adjusting device of a multi-fuel vehicle type, the device comprising:
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, wherein the initial fuel injection quantity is determined according to the current working condition of the vehicle.
8. An apparatus comprising a processor and a memory, wherein the memory stores at least one instruction or at least one program, the at least one instruction or the at least one program loaded by the processor and executed the multi-fuel vehicle model oil circuit deviation adjustment method according to any one of claims 1 to 6.
9. 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 oil circuit deviation of the multi-fuel vehicle type according to any one of claims 1 to 6.
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