CN117329005A - Control method and device of dual-fuel engine and electronic equipment - Google Patents
Control method and device of dual-fuel engine and electronic equipment Download PDFInfo
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- CN117329005A CN117329005A CN202311349533.6A CN202311349533A CN117329005A CN 117329005 A CN117329005 A CN 117329005A CN 202311349533 A CN202311349533 A CN 202311349533A CN 117329005 A CN117329005 A CN 117329005A
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- 239000000446 fuel Substances 0.000 title claims abstract description 216
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 243
- 238000002347 injection Methods 0.000 claims abstract description 243
- 239000002737 fuel gas Substances 0.000 claims abstract description 47
- 230000009977 dual effect Effects 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 65
- 238000004364 calculation method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 6
- 239000000295 fuel oil Substances 0.000 abstract description 12
- 230000004044 response Effects 0.000 abstract description 8
- 238000006467 substitution reaction Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000699670 Mus sp. Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The application discloses a control method and device of a dual-fuel engine and electronic equipment, wherein the method and the device are applied to the electronic equipment, and specifically are based on a current accelerator opening and an actual rotating speed value of the dual-fuel engine; calculating a target fuel gas injection quantity based on the first PID operation parameter, and calculating an initial fuel injection quantity based on the second PID operation parameter; obtaining a basic fuel injection quantity under the current working condition based on the actual rotation speed value and the current load; and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity. And outputting the target fuel gas injection amount and the target fuel oil injection amount to the controller to cause the controller to control the dual fuel engine to perform fuel gas injection and fuel oil injection based on the target fuel gas injection amount and the target fuel oil injection amount. Thereby achieving both the quick response to the engine speed and the optimal control of the fuel gas substitution rate.
Description
Technical Field
The present application relates to the field of internal combustion engines, and more particularly, to a control method, apparatus, electronic device, and medium for a dual-fuel engine.
Background
A dual fuel engine refers to an engine that can use two fuels of liquid and gas simultaneously, wherein one fuel is used for igniting the other fuel, the liquid fuel is generally directly injected in a cylinder, and the gas fuel is injected in multiple points through an air inlet pipe of the engine. For example, diesel fuel may be used as a liquid fuel to ignite the fuel in the cylinder, and the fuel may be ignited at the same time as the fuel. In some specific application scenarios, such as marine power generation systems or marine propulsion systems, it is common to implement rotational speed control of such dual fuel engines, i.e. to control them at a specific rotational speed required for that scenario.
In order to achieve the specific rotating speed required by an application scene, the control system of the current dual-fuel engine adopts a control mode of controlling the fuel injection quantity according to an open-loop table look-up mode of working conditions and controlling the fuel injection quantity by a closed-loop PID, or adopts a control mode of controlling the fuel injection quantity according to an open-loop table look-up mode of working conditions and controlling the fuel injection quantity by a closed-loop PID, and the control modes are all single PID control modes. The quick response to the engine speed can be ensured through closed-loop control of the fuel quantity when the rotating speed is suddenly changed, but the fuel substitution rate cannot be ensured; the latter can guarantee a gas substitution rate but cannot guarantee a rapid response to the engine speed. Namely, the existing control mode cannot simultaneously give consideration to the quick response of the engine speed and the optimal control of the fuel gas substitution rate.
Disclosure of Invention
In view of the above, the present application provides a control method, apparatus, electronic device, and medium for a dual-fuel engine, which is used for controlling the dual-fuel engine based on dual-closed-loop PID control, so as to achieve both rapid response to engine rotation speed and optimal control of fuel gas substitution rate.
In order to achieve the above object, the following solutions have been proposed:
a control method of a dual fuel engine applied to an electronic device, the control method comprising the steps of:
calculating the current accelerator opening and the actual rotation speed value of the dual-fuel engine to obtain a rotation speed deviation value of the dual-fuel engine;
calculating the rotation speed deviation value based on a first PID operation parameter to obtain a target gas injection quantity, and sending the target gas injection quantity to a controller of the dual-fuel engine so that the controller controls the dual-fuel engine to implement gas injection based on the target gas injection quantity;
calculating the rotational speed deviation value based on a second PID operation parameter to obtain an initial fuel injection quantity;
calculating the actual rotation speed value and the current load of the dual-fuel engine to obtain a basic fuel injection quantity under the current working condition;
and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity, and outputting the target fuel injection quantity to the controller so that the controller controls the dual-fuel engine to implement fuel injection based on the target fuel injection quantity.
Optionally, the calculating process is performed on the current accelerator opening and the actual rotation speed value of the dual-fuel engine to obtain a rotation speed deviation value of the dual-fuel engine, and the method includes the steps of:
acquiring the current accelerator opening and the actual rotating speed value;
performing table lookup operation based on the current accelerator opening to obtain a target rotating speed value corresponding to the current accelerator opening;
and performing difference operation on the target rotating speed value and the actual rotating speed value to obtain the rotating speed deviation value.
Optionally, the calculating the rotational speed deviation value based on the first PID operation parameter to obtain the target gas injection amount includes the steps of:
performing proportional operation on the rotating speed deviation value based on proportional operation parameters in the first PID operation parameters to obtain a first fuel gas injection quantity;
performing integral operation on the rotating speed deviation value based on integral operation parameters in the first PID operation parameters to obtain a second fuel gas injection quantity;
performing differential operation on the rotating speed deviation value based on differential operation parameters in the first PID control parameters to obtain a third fuel gas injection quantity;
and carrying out addition operation on the first gas injection quantity, the second gas injection quantity and the third gas injection quantity to obtain the target gas injection quantity.
Optionally, the calculating the rotational speed deviation value based on the second PID operation parameter obtains an initial fuel injection amount, including the steps of:
performing differential operation on the rotational speed deviation value based on a first differential operation parameter in the second PID operation parameters to obtain a rotational speed deviation rate;
performing proportional operation on the rotation speed deviation rate based on proportional operation parameters in the second PID operation parameters to obtain a first fuel injection quantity;
performing integral operation on the rotation speed deviation rate based on integral operation parameters in the second PID operation parameters to obtain a second fuel injection quantity;
performing differential operation on the rotation speed deviation rate based on a second differential operation parameter in the second PID control parameters to obtain a third fuel injection quantity;
and carrying out addition operation on the first gas injection quantity, the second gas injection quantity and the third gas injection quantity to obtain the initial gas injection quantity.
Optionally, the calculating the actual rotation speed value and the current load of the dual-fuel engine to obtain a basic fuel injection quantity under the current working condition includes the following steps:
acquiring the current load;
and performing table lookup operation based on the actual rotation speed value and the current load to obtain the basic fuel injection quantity.
A control device of a dual fuel engine applied to an electronic apparatus, the control device comprising:
the rotating speed deviation operation module is configured to perform operation processing on the current accelerator opening and the actual rotating speed value of the dual-fuel engine to obtain a rotating speed deviation value of the dual-fuel engine;
the first closed-loop operation module is configured to operate the rotating speed deviation value based on a first PID operation parameter to obtain a target gas injection quantity, and send the target gas injection quantity to a controller of the dual-fuel engine so that the controller controls the dual-fuel engine to perform gas injection based on the target gas injection quantity;
the second closed-loop operation module is configured to operate the rotating speed deviation value based on a second PID operation parameter to obtain an initial fuel injection quantity;
the table look-up operation module is configured to operate the actual rotation speed value and the current load of the dual-fuel engine to obtain a basic fuel injection quantity under the current working condition;
and the operation output module is configured to add the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity and output the target fuel injection quantity to the controller so that the controller controls the dual-fuel engine to implement fuel injection based on the target fuel injection quantity.
Optionally, the rotation speed deviation operation module includes:
a first acquisition unit configured to acquire the current accelerator opening and the actual rotation speed value;
the first table look-up unit is configured to perform table look-up operation based on the current accelerator opening to obtain a target rotating speed value corresponding to the current accelerator opening;
and the subtraction operation unit is configured to perform difference operation on the target rotating speed value and the actual rotating speed value to obtain the rotating speed deviation value.
Optionally, the first closed loop operation module includes:
the proportional operation parameter in the first PID operation parameter carries out proportional operation on the rotating speed deviation value to obtain a first fuel gas injection quantity;
the first integral operation unit is configured to carry out integral operation on the rotating speed deviation value based on integral operation parameters in the first PID operation parameters to obtain a second fuel gas injection quantity;
the first differential operation unit is configured to perform differential operation on the rotating speed deviation value based on differential operation parameters in the first PID control parameters to obtain a third fuel gas injection quantity;
and a first addition unit configured to add the first gas injection amount, the second gas injection amount, and the third gas injection amount to obtain the target gas injection amount.
Optionally, the second closed loop operation module includes:
the second differential operation unit is configured to conduct differential operation on the rotating speed deviation value based on a first differential operation parameter in the second PID operation parameters, so as to obtain a rotating speed deviation rate;
the second proportion operation unit is configured to perform proportion operation on the rotating speed deviation rate based on proportion operation parameters in the second PID operation parameters to obtain a first fuel injection quantity;
the second integral operation unit is configured to carry out integral operation on the rotating speed deviation rate based on integral operation parameters in the second PID operation parameters so as to obtain a second fuel injection quantity;
a third differential operation unit configured to perform differential operation on the rotation speed deviation rate based on a second differential operation parameter in the second PID control parameters, to obtain a third fuel injection amount;
and a second addition unit configured to add the first gas injection amount, the second gas injection amount, and the third gas injection amount to obtain the initial gas injection amount.
Optionally, the table look-up operation module includes:
a second acquisition unit configured to acquire the current load;
and the second table look-up unit is configured to execute table look-up operation based on the actual rotation speed value and the current load to obtain the basic fuel injection quantity.
An electronic device for use with a dual fuel engine, the electronic device comprising at least one processor and a memory coupled to the processor, wherein:
the memory is used for storing a computer program or instructions;
the processor is configured to execute the computer program or instructions to cause the electronic device to implement the control method as described above.
From the above technical scheme, the application discloses a control method, a control device and an electronic device of a dual-fuel engine, wherein the method and the device are applied to the electronic device, and specifically are based on the current accelerator opening and the actual rotating speed value of the dual-fuel engine; calculating a target fuel gas injection quantity based on the first PID operation parameter, and calculating an initial fuel injection quantity based on the second PID operation parameter; obtaining a basic fuel injection quantity under the current working condition based on the actual rotation speed value and the current load; and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity. And outputting the target fuel gas injection amount and the target fuel oil injection amount to the controller to cause the controller to control the dual fuel engine to perform fuel gas injection and fuel oil injection based on the target fuel gas injection amount and the target fuel oil injection amount. Thereby achieving both the quick response to the engine speed and the optimal control of the fuel gas substitution rate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a control method of a dual fuel engine according to an embodiment of the present application;
fig. 2 is a block diagram of a control device of a dual fuel engine according to an embodiment of the present application;
fig. 3 is a block diagram of an electronic device 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 based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Fig. 1 is a flowchart of a control method of a dual fuel engine according to an embodiment of the present application.
As shown in fig. 1, the control method provided in the present embodiment is applied to an electronic device that performs control on fuel injection of a dual-fuel engine, such as an MCU or ECU of the engine, and is used for controlling fuel injection and gas injection of the dual-fuel engine, and specifically includes the following steps:
s1, calculating a rotation speed deviation value based on the current accelerator opening and an actual rotation speed value.
That is, the rotational speed deviation value of the dual-fuel engine is obtained based on calculation of the current accelerator opening and the actual rotational speed value of the accelerator control device of the dual-fuel engine, wherein the rotational speed deviation value refers to the difference between the target rotational speed value and the actual rotational speed value of the dual-fuel engine. The calculation is carried out by the following method:
firstly, acquiring a current accelerator opening and an actual rotation speed value, wherein the current accelerator opening is acquired from an accelerator control device of the engine, such as an accelerator lever or a pedal, namely an opening signal output by the device is acquired, and the current accelerator opening is obtained through calculation; the actual speed value is obtained from a speed sensor of the engine, and the obtaining way can be directly obtained from the sensor or obtained from a data bus of the engine.
Then, a table look-up operation is performed based on the current accelerator opening, wherein the table refers to an accelerator characteristic curve table, and a rotation speed value corresponding to the current accelerator opening is obtained from the table look-up operation and is used as a target rotation speed value.
And finally, performing difference operation on the actual rotating speed value and the target rotating speed value to obtain the rotating speed deviation value, so that the rotating speed deviation value is used as basic data of subsequent operation.
S2, calculating the rotation speed deviation value based on the first PID calculation parameter to obtain the target gas injection quantity.
The first PID operation parameter includes a proportional operation parameter P 00 Integral operation parameter I 00 And a differential operation parameter D 00 The target fuel gas injection amount is obtained by performing proportional, integral and differential operations on the rotational speed deviation value based on the operation parameters, and the target fuel gas injection amount is output to a controller of the engine, so that the controller performs fuel gas injection on an intake manifold of the engine based on the target fuel gas injection amount. The specific operation process is as follows:
first, based on the proportional operation parameter P 00 Performing proportional operation on the rotation speed deviation value to obtain a first fuel gas injection quantity;
then, based on the integral operation parameter I 00 Performing integral operation on the rotation speed deviation value to obtain a second fuel gas injection quantity;
then, based on the differential operation parameter D 00 Performing differential operation on the rotation speed deviation value to obtain a third fuel gas injection quantity;
and finally, carrying out addition operation on the first gas injection quantity, the second gas injection quantity and the third gas injection quantity, thereby obtaining a target gas injection quantity.
And S3, calculating the rotation speed deviation value based on the second PID calculation parameter to obtain the target fuel injection quantity.
The second PID operation parameter includes a proportional operation parameter P 11 Integral operation parameter I 11 First differential operation parameter D 11 And a second differential operation parameter D 12 That is, proportional, integral and differential operations are performed on the rotational speed deviation value based on the above-described operation parameters, respectively. The specific process is as follows:
first, based on the first differential operation parameter D 11 Performing differential operation on the rotational speed deviation value to obtain a rotational speed deviation rate, wherein the rotational speed deviation rate refers to the change rate of the rotational speed deviation value along with the change of time;
then, based on the proportional operation parameter P 11 Performing proportional operation on the rotation speed deviation rate to obtain a first fuel injection quantity;
then, based on integral operation parameter I 11 Performing integral operation on the rotation speed deviation rate to obtain a second fuel injection quantity;
then, based on the second differential operation parameter D 12 Performing differential operation on the rotation speed deviation rate to obtain a third fuel injection quantity;
and finally, carrying out addition operation on the first fuel injection quantity, the second fuel injection quantity and the third fuel injection quantity, thereby obtaining an initial fuel injection quantity.
And S4, calculating the basic fuel injection quantity under the current working condition according to the actual rotation speed value and the current load.
The basic fuel injection quantity under the current working condition is obtained by calculating based on the actual rotation speed value of the dual-fuel engine and the current load of the engine. The specific process is as follows:
firstly, obtaining the current load of the dual-fuel engine, wherein the current load can be obtained by measuring the output torque of the engine;
then, a table look-up operation is performed based on the actual rotation speed value and the current load, specifically, a query is performed from a preset fuel injection amount basic table based on the actual rotation speed value and the current load, so as to obtain a fuel injection amount corresponding to the actual rotation speed value and the current load, and the fuel injection amount is used as a basic fuel injection amount.
And S5, adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity.
After the initial fuel injection amount and the base fuel injection amount are obtained, the two are added together, thereby obtaining the target fuel injection amount. And outputting the target fuel injection amount to a controller of the dual fuel engine to cause the controller to control the engine to perform fuel injection based on the target fuel injection amount.
As can be seen from the above technical solution, the present embodiment provides a control method of a dual-fuel engine, where the method is applied to an electronic device, specifically, a rotational speed deviation value of the dual-fuel engine based on a current accelerator opening and an actual rotational speed value of the dual-fuel engine; calculating a target fuel gas injection quantity based on the first PID operation parameter, and calculating an initial fuel injection quantity based on the second PID operation parameter; obtaining a basic fuel injection quantity under the current working condition based on the actual rotation speed value and the current load; and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity. And outputting the target fuel gas injection amount and the target fuel oil injection amount to the controller to cause the controller to control the dual fuel engine to perform fuel gas injection and fuel oil injection based on the target fuel gas injection amount and the target fuel oil injection amount. Thereby achieving both the quick response to the engine speed and the optimal control of the fuel gas substitution rate.
The throttle characteristic curve table, the fuel injection basic table, the first PID operation parameter and the second PID operation parameter in the embodiment can be realized through calibrating a rack of the engine.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, including, but not limited to, an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the C-language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of remote computers, the remote computer may be connected to the user computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer.
Fig. 2 is a block diagram of a control device of a dual fuel engine according to an embodiment of the present application.
As shown in fig. 2, the control device provided in this embodiment is applied to an electronic device for controlling fuel injection of a dual-fuel engine, such as an MCU or an ECU of the engine, and is used for controlling fuel injection and gas injection of the dual-fuel engine, and specifically includes a rotational speed deviation calculation module 10, a first closed loop calculation module 20, a second closed loop calculation module 30, a look-up table calculation module 40, and an operation output module 50.
The rotating speed deviation operation module is used for calculating a rotating speed deviation value based on the current accelerator opening and the actual rotating speed value.
That is, the rotational speed deviation value of the dual-fuel engine is obtained based on calculation of the current accelerator opening and the actual rotational speed value of the accelerator control device of the dual-fuel engine, wherein the rotational speed deviation value refers to the difference between the target rotational speed value and the actual rotational speed value of the dual-fuel engine. The module comprises a first acquisition unit, a first table look-up unit and a subtraction unit.
The first acquisition unit is used for acquiring a current accelerator opening and an actual rotation speed value, wherein the current accelerator opening is acquired from an accelerator control device of the engine, such as an accelerator lever or a pedal, namely an opening signal output by the device is acquired, and the current accelerator opening is obtained through calculation; the actual speed value is obtained from a speed sensor of the engine, and the obtaining way can be directly obtained from the sensor or obtained from a data bus of the engine.
The first table look-up unit is used for performing table look-up operation based on the current accelerator opening, wherein the table refers to an accelerator characteristic curve table, and a rotating speed value corresponding to the current accelerator opening is obtained through table look-up and is used as a target rotating speed value.
The subtraction unit is used for performing difference operation on the actual rotation speed value and the target rotation speed value, so as to obtain the rotation speed deviation value, and the rotation speed deviation value is used as basic data of subsequent operation.
The first closed-loop operation module is used for calculating the rotating speed deviation value based on the first PID operation parameter to obtain the target gas injection quantity.
The first PID operation parameter includes a proportional operation parameter P 00 Integral operation parameter I 00 And a differential operation parameter D 00 The target fuel gas injection amount is obtained by performing proportional, integral and differential operations on the rotational speed deviation value based on the operation parameters, and the target fuel gas injection amount is output to a controller of the engine, so that the controller performs fuel gas injection on an intake manifold of the engine based on the target fuel gas injection amount. The module includes a first proportional operation unit, a first integral operation unit, a first differential operation unit, and a first addition operation unit.
The first proportional operation unit is used for calculating the parameter P based on the proportion 00 Performing proportional operation on the rotation speed deviation value to obtain a first fuel gas injection quantity;
the first integral operation unit is used for calculating the parameter I based on the integral 00 Performing integral operation on the rotation speed deviation value to obtain a second fuel gas injection quantity;
the first differential operation unit is used for being based on the differential operation parameter D 00 Differential operation is carried out on the rotation speed deviation value to obtain a third combustionAir injection quantity;
the first addition unit is used for adding the first gas injection quantity, the second gas injection quantity and the third gas injection quantity so as to obtain a target gas injection quantity.
The second closed-loop operation module is used for calculating the rotating speed deviation value based on the second PID operation parameter to obtain the target fuel injection quantity.
The second PID operation parameter includes a proportional operation parameter P 11 Integral operation parameter I 11 First differential operation parameter D 11 And a second differential operation parameter D 12 That is, proportional, integral and differential operations are performed on the rotational speed deviation value based on the above-described operation parameters, respectively. The module includes a second differential operation unit, a second proportional operation unit, a second integral operation unit, a third differential operation unit, and a second addition operation unit.
The second differential operation unit is used for based on the second differential operation parameter D 11 Performing differential operation on the rotational speed deviation value to obtain a rotational speed deviation rate, wherein the rotational speed deviation rate refers to the change rate of the rotational speed deviation value along with the change of time;
the second proportion operation unit is used for calculating the parameter P based on the proportion 11 Performing proportional operation on the rotation speed deviation rate to obtain a first fuel injection quantity;
the second integral operation unit is used for being based on the integral operation parameter I 11 Performing integral operation on the rotation speed deviation rate to obtain a second fuel injection quantity;
the third differential operation unit is used for calculating the parameter D based on the third differential 12 Performing differential operation on the rotation speed deviation rate to obtain a third fuel injection quantity;
the second addition unit is used for adding the first fuel injection quantity, the second fuel injection quantity and the third fuel injection quantity so as to obtain an initial fuel injection quantity.
The table look-up operation module is used for calculating the basic fuel injection quantity under the current working condition according to the actual rotation speed value and the current load.
The basic fuel injection quantity under the current working condition is obtained by calculating based on the actual rotation speed value of the dual-fuel engine and the current load of the engine. The module comprises a second acquisition unit and a second lookup unit.
The second acquisition unit is used for acquiring the current load of the dual-fuel engine, and the current load can be obtained by measuring the output torque of the engine;
the second table look-up unit is used for performing table look-up operation based on the actual rotation speed value and the current load, specifically, inquiring from a preset fuel injection quantity basic table based on the actual rotation speed value and the current load, so as to obtain fuel injection quantity corresponding to the actual rotation speed value and the current load, and taking the fuel injection quantity as basic fuel injection quantity.
The operation output module is used for adding the initial fuel injection quantity and the basic fuel injection quantity to obtain the target fuel injection quantity.
After the initial fuel injection amount and the base fuel injection amount are obtained, the two are added together, thereby obtaining the target fuel injection amount. And outputting the target fuel injection amount to a controller of the dual fuel engine to cause the controller to control the engine to perform fuel injection based on the target fuel injection amount.
As can be seen from the above technical solution, the present embodiment provides a control device of a dual-fuel engine, where the device is applied to an electronic device, specifically, a rotational speed deviation value of the dual-fuel engine based on a current accelerator opening and an actual rotational speed value of the dual-fuel engine; calculating a target fuel gas injection quantity based on the first PID operation parameter, and calculating an initial fuel injection quantity based on the second PID operation parameter; obtaining a basic fuel injection quantity under the current working condition based on the actual rotation speed value and the current load; and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity. And outputting the target fuel gas injection amount and the target fuel oil injection amount to the controller to cause the controller to control the dual fuel engine to perform fuel gas injection and fuel oil injection based on the target fuel gas injection amount and the target fuel oil injection amount. Thereby achieving both the quick response to the engine speed and the optimal control of the fuel gas substitution rate.
The units involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. The name of the unit does not in any way constitute a limitation of the unit itself, for example the first acquisition unit may also be described as "unit acquiring at least two internet protocol addresses".
The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.
Fig. 3 is a block diagram of an electronic device according to an embodiment of the present application.
Referring now to fig. 3, a schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure is shown. The terminal devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device is merely an example and should not impose any limitations on the functionality and scope of use of embodiments of the present disclosure.
The electronic device may include a processing means (e.g., a central processor, a graphics processor, etc.) 301 that may perform various appropriate actions and processes in accordance with programs stored in a read-only memory ROM302 or loaded from an input means 306 into a random access memory RAM 303. In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM, and RAM are connected to each other by a bus 304. An input/output (I/O) interface 305 is also connected to bus 304.
In general, the following devices may be connected to the I/O interface: input devices including, for example, touch screens, touch pads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; an output device 307 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 308 including, for example, magnetic tape, hard disk, etc.; and communication means 309. The communication means 309 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. While an electronic device having various means is shown in the figures, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description of the invention that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (11)
1. A control method of a dual-fuel engine applied to an electronic device, characterized by comprising the steps of:
calculating the current accelerator opening and the actual rotation speed value of the dual-fuel engine to obtain a rotation speed deviation value of the dual-fuel engine;
calculating the rotation speed deviation value based on a first PID operation parameter to obtain a target gas injection quantity, and sending the target gas injection quantity to a controller of the dual-fuel engine so that the controller controls the dual-fuel engine to implement gas injection based on the target gas injection quantity;
calculating the rotational speed deviation value based on a second PID operation parameter to obtain an initial fuel injection quantity;
calculating the actual rotation speed value and the current load of the dual-fuel engine to obtain a basic fuel injection quantity under the current working condition;
and adding the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity, and outputting the target fuel injection quantity to the controller so that the controller controls the dual-fuel engine to implement fuel injection based on the target fuel injection quantity.
2. The control method according to claim 1, characterized in that the calculating process is performed on the current accelerator opening and the actual rotation speed value of the dual-fuel engine to obtain the rotation speed deviation value of the dual-fuel engine, and the method comprises the steps of:
acquiring the current accelerator opening and the actual rotating speed value;
performing table lookup operation based on the current accelerator opening to obtain a target rotating speed value corresponding to the current accelerator opening;
and performing difference operation on the target rotating speed value and the actual rotating speed value to obtain the rotating speed deviation value.
3. The control method according to claim 1, wherein the calculating the rotational speed deviation value based on the first PID operation parameter to obtain the target gas injection amount includes the steps of:
performing proportional operation on the rotating speed deviation value based on proportional operation parameters in the first PID operation parameters to obtain a first fuel gas injection quantity;
performing integral operation on the rotating speed deviation value based on integral operation parameters in the first PID operation parameters to obtain a second fuel gas injection quantity;
performing differential operation on the rotating speed deviation value based on differential operation parameters in the first PID control parameters to obtain a third fuel gas injection quantity;
and carrying out addition operation on the first gas injection quantity, the second gas injection quantity and the third gas injection quantity to obtain the target gas injection quantity.
4. The control method according to claim 1, wherein the calculating the rotational speed deviation value based on the second PID operation parameter to obtain the initial fuel injection amount includes the steps of:
performing differential operation on the rotational speed deviation value based on a first differential operation parameter in the second PID operation parameters to obtain a rotational speed deviation rate;
performing proportional operation on the rotation speed deviation rate based on proportional operation parameters in the second PID operation parameters to obtain a first fuel injection quantity;
performing integral operation on the rotation speed deviation rate based on integral operation parameters in the second PID operation parameters to obtain a second fuel injection quantity;
performing differential operation on the rotation speed deviation rate based on a second differential operation parameter in the second PID control parameters to obtain a third fuel injection quantity;
and carrying out addition operation on the first gas injection quantity, the second gas injection quantity and the third gas injection quantity to obtain the initial gas injection quantity.
5. The control method as set forth in claim 1, wherein said calculating said actual rotation speed value and said current load of said dual-fuel engine to obtain a base fuel injection amount under current conditions includes the steps of:
acquiring the current load;
and performing table lookup operation based on the actual rotation speed value and the current load to obtain the basic fuel injection quantity.
6. A control device of a dual-fuel engine applied to an electronic apparatus, characterized by comprising:
the rotating speed deviation operation module is configured to perform operation processing on the current accelerator opening and the actual rotating speed value of the dual-fuel engine to obtain a rotating speed deviation value of the dual-fuel engine;
the first closed-loop operation module is configured to operate the rotating speed deviation value based on a first PID operation parameter to obtain a target gas injection quantity, and send the target gas injection quantity to a controller of the dual-fuel engine so that the controller controls the dual-fuel engine to perform gas injection based on the target gas injection quantity;
the second closed-loop operation module is configured to operate the rotating speed deviation value based on a second PID operation parameter to obtain an initial fuel injection quantity;
the table look-up operation module is configured to operate the actual rotation speed value and the current load of the dual-fuel engine to obtain a basic fuel injection quantity under the current working condition;
and the operation output module is configured to add the initial fuel injection quantity and the basic fuel injection quantity to obtain a target fuel injection quantity and output the target fuel injection quantity to the controller so that the controller controls the dual-fuel engine to implement fuel injection based on the target fuel injection quantity.
7. The control device according to claim 6, wherein the rotational speed deviation calculation module includes:
a first acquisition unit configured to acquire the current accelerator opening and the actual rotation speed value;
the first table look-up unit is configured to perform table look-up operation based on the current accelerator opening to obtain a target rotating speed value corresponding to the current accelerator opening;
and the subtraction operation unit is configured to perform difference operation on the target rotating speed value and the actual rotating speed value to obtain the rotating speed deviation value.
8. The control device of claim 6, wherein the first closed loop operation module comprises:
the first proportion operation unit is configured to perform proportion operation on the rotating speed deviation value based on proportion operation parameters in the first PID operation parameters to obtain a first fuel gas injection quantity;
the first integral operation unit is configured to carry out integral operation on the rotating speed deviation value based on integral operation parameters in the first PID operation parameters to obtain a second fuel gas injection quantity;
the first differential operation unit is configured to perform differential operation on the rotating speed deviation value based on differential operation parameters in the first PID control parameters to obtain a third fuel gas injection quantity;
and a first addition unit configured to add the first gas injection amount, the second gas injection amount, and the third gas injection amount to obtain the target gas injection amount.
9. The control device of claim 6, wherein the second closed loop operation module comprises:
the second differential operation unit is configured to conduct differential operation on the rotating speed deviation value based on a first differential operation parameter in the second PID operation parameters, so as to obtain a rotating speed deviation rate;
the second proportion operation unit is configured to perform proportion operation on the rotating speed deviation rate based on proportion operation parameters in the second PID operation parameters to obtain a first fuel injection quantity;
the second integral operation unit is configured to carry out integral operation on the rotating speed deviation rate based on integral operation parameters in the second PID operation parameters so as to obtain a second fuel injection quantity;
a third differential operation unit configured to perform differential operation on the rotation speed deviation rate based on a second differential operation parameter in the second PID control parameters, to obtain a third fuel injection amount;
and a second addition unit configured to add the first gas injection amount, the second gas injection amount, and the third gas injection amount to obtain the initial gas injection amount.
10. The control device of claim 6, wherein the look-up table operation module comprises:
a second acquisition unit configured to acquire the current load;
and the second table look-up unit is configured to execute table look-up operation based on the actual rotation speed value and the current load to obtain the basic fuel injection quantity.
11. An electronic device for use with a dual fuel engine, the electronic device comprising at least one processor and a memory coupled to the processor, wherein:
the memory is used for storing a computer program or instructions;
the processor is configured to execute the computer program or instructions to cause the electronic device to implement the control method according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311349533.6A CN117329005A (en) | 2023-10-18 | 2023-10-18 | Control method and device of dual-fuel engine and electronic equipment |
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| CN202311349533.6A CN117329005A (en) | 2023-10-18 | 2023-10-18 | Control method and device of dual-fuel engine and electronic equipment |
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| CN202311349533.6A Pending CN117329005A (en) | 2023-10-18 | 2023-10-18 | Control method and device of dual-fuel engine and electronic equipment |
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