Ozone-assisted combustion-based diesel engine system and control method thereof

Abstract

The application provides a diesel engine system based on ozone combustion-supporting and a control method thereof. The method determines the value of each element of an ozone generator based on the pressure of an air intake pipe, the rotating speed of the engine, and the mapping relationship between different pressure values of the air intake pipe and different rotating speeds of the engine corresponding to the working condition of the maximum engine torque or the least pollutants, so as to control the generation of ozone at the initial moment of the initial engine starting. After the engine runs for a period of time, the value of each element of the ozone generator can be determined based on the running of the engine in the historical time period, such as the torque, the rotating speed, and the historical moment, and the value corresponding to each element in the current ozone generator is determined, so that a control method is provided, the ozone generated by the ozone generator can assist the engine to work, the ozone combustion-supporting diesel engine system works in the optimal state, and no extra ozone is generated, so that the consumption of the energy source of the ozone generator is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of diesel engine technology, and particularly relates to a diesel engine system based on ozone combustion and a control method thereof. BACKGROUND

[0002] Improving the combustion efficiency of diesel engines and reducing harmful gas emissions are hot issues that researchers are concerned about. The article "Application of ozone technology in diesel engine" provides a method of using corona discharge to generate ozone and then using it in diesel engines. The device provided by the article uses air as the gas source, and under high frequency and high voltage, air passes through the ozone ceramic sheet and undergoes corona discharge under the action of the electric field, thereby generating ozone. When in use, the ozone generator is placed in the cylinder intake duct, and after the power switch is turned on, a large amount of ozone is generated and is sucked into the cylinder by the engine to participate in combustion.

[0003] In the prior art, the ozone generator lacks an effective control system and method. For diesel engines in different working states, the ozone generator cannot adjust and optimize the state thereof. This results in that the ozone combustion diesel engine system cannot work in the optimal state, and the ozone generator also consumes more energy. SUMMARY

[0004] The present application provides a diesel engine system based on ozone combustion and a control method thereof, to provide a control method of a diesel engine system based on ozone combustion, to realize that the ozone generated by the ozone generator assists the engine to work, so that the ozone combustion diesel engine system works in the optimal state, and no extra ozone is generated, thereby reducing the energy consumption of the ozone generator.

[0005] The present invention provides a control method for a diesel engine system based on ozone-assisted combustion, comprising: when the current moment is the initial moment, based on the first pressure value of the intake pipe in the diesel engine system at the current moment, the first speed of the engine, and a plurality of preset mapping relationships, respectively determining the voltage of the high-voltage power supply at the current moment, the driving pulse width and driving frequency of the driving circuit at the current moment, and the air volume of the fan at the current moment; and based on the preset initial value of the magnetic field strength, determining the magnetic field strength in the ozone generator pipe at the current moment; wherein the preset mapping relationship is a mapping relationship between different intake pipe pressure values ​​and different engine speeds within a historical time period, corresponding to the operating conditions with the maximum engine torque or the least pollutants, and various components of the ozone generator; or, when the current moment is not the initial moment, In this case, based on the second pressure value of the intake pipe in the diesel engine system at the current moment, the second speed of the engine at the current moment, the voltage of the high-voltage power supply at the previous moment, the torque of the engine at the current moment and the previous moment, the driving pulse width of the driving circuit at the previous moment, the electron concentration in the ozone generator pipe within the historical time period and the magnetic field strength at the historical moment, the voltage of the high-voltage power supply at the current moment, the driving pulse width and driving frequency of the driving circuit at the current moment, the air volume of the fan at the current moment, and the magnetic field strength in the ozone generator pipe at the current moment are determined; based on the voltage of the high-voltage power supply at the current moment, the driving pulse width and driving frequency of the driving circuit at the current moment, the air volume of the fan at the current moment, and the magnetic field strength in the ozone generator pipe at the current moment, the generation of ozone in the ozone generator is controlled.

[0006] In one embodiment, the method of determining the voltage of the high-voltage power supply at the current moment, the driving pulse width and driving frequency of the driving circuit at the current moment, and the air volume of the fan at the current moment based on a first pressure value of the intake pipe in the diesel engine system at the current moment, a first speed of the engine, and a plurality of preset mapping relationships, respectively, includes: determining the first voltage of the high-voltage power supply at the current moment based on the first pressure value and the first mapping relationship; the first mapping relationship is a relationship between the voltage of the high-voltage power supply and the pressure of the intake pipe, and the voltage of the high-voltage power supply and the pressure of the intake pipe are exponential mapping relationships; determining the first driving pulse width of the driving circuit at the current moment based on the first pressure value, the first speed, and the second mapping relationship; the second mapping relationship is a relationship between the driving pulse width of the driving circuit and the pressure of the intake pipe and the speed of the engine, and the driving pulse width of the driving circuit is positively correlated with the product of the pressure of the intake pipe and the speed of the engine;

[0007] determine the first driving frequency of the driving circuit based on the first pressure value, the first rotating speed, and a third mapping relationship; the third mapping relationship is a relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the rotating speed of the engine, the driving frequency of the driving circuit is inversely proportional to the pressure of the intake pipe and is positively correlated with the rotating speed of the engine; and determine the first air volume of the fan based on the first rotating speed and a fourth mapping relationship; the fourth mapping relationship is a relationship between the air volume of the fan and the rotating speed of the engine, the air volume of the fan is positively correlated with the rotating speed of the engine.

[0008] In one of the embodiments, the determining of the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field intensity in the ozone generator pipeline at the current time based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second rotating speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field intensity at the historical time comprises: determining the third voltage of the high-voltage power supply at the current time based on the second voltage of the high-voltage power supply at the previous time, the first torque of the engine at the previous time, the second torque of the engine at the current time, and a fifth mapping relationship; the fifth mapping relationship is a relationship between the voltage of the high-voltage power supply at the current time and the voltage of the high-voltage power supply at the previous time, the torque of the engine at the previous time, and the torque of the engine at the current time, the voltage of the high-voltage power supply at the current time is positively correlated with the voltage of the high-voltage power supply at the previous time, and the voltage of the high-voltage power supply at the current time is positively correlated with the difference between the torque of the engine at the previous time and the torque of the engine at the current time; determining the third driving pulse width of the driving circuit at the current time based on the second driving pulse width of the driving circuit at the previous time, the first torque of the engine at the previous time, the second torque of the engine at the current time, and a sixth mapping relationship; the sixth mapping relationship is a relationship between the driving pulse width of the driving circuit at the current time and the driving pulse width of the driving circuit at the previous time, the torque of the engine at the previous time, and the torque of the engine at the current time, the driving pulse width of the driving circuit at the current time is negatively correlated with the quotient of the torque of the engine at the previous time and the torque of the engine at the current time, and is positively correlated with the driving pulse width of the driving circuit at the previous time; determining the second driving frequency of the driving circuit at the current time based on the second pressure value, the second rotating speed, and a third mapping relationship; the third mapping relationship is a relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the rotating speed of the engine, the driving frequency of the driving circuit is inversely proportional to the pressure of the intake pipe and is proportional to the rotating speed of the engine; determining the second air volume of the fan at the current time based on the second rotating speed and a fourth mapping relationship; the fourth mapping relationship is a relationship between the air volume of the fan and the rotating speed of the engine, the air volume of the fan is positively correlated with the rotating speed of the engine; and determining the third magnetic field intensity at the current time based on the first magnetic field intensity at the first historical time, the second magnetic field intensity at the second historical time, the first electron concentration in the ozone generator pipeline in the first historical time period, the second electron concentration in the ozone generator pipeline in the second historical time period, and a seventh mapping relationship.

[0009] In one of the embodiments, the first mapping relationship is U = 1200 + e -0.26P wherein U represents the voltage of the high-voltage power supply, P represents the pressure of the intake pipe; the second mapping relationship is DT = 0.1 * P * A, wherein DT represents the driving pulse width of the driving circuit, and A represents the rotating speed of the engine; and the third mapping relationship is F = A.1.4 +20 / P; wherein, F represents the driving frequency of the driving circuit; the fourth mapping relationship is: V=3+0.2*A; wherein, V represents the air volume of the fan.

[0010] In one of the embodiments, the method for controlling the generation of ozone in the ozone generator based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field intensity in the ozone generator pipeline at the current time comprises: determining the first voltage as the voltage of the high-voltage power supply at the current time, determining the first driving pulse width as the driving pulse width of the driving circuit at the current time, determining the first driving frequency as the driving frequency of the driving circuit at the current time, determining the first air volume as the air volume of the fan at the current time, determining the preset magnetic field intensity initial value as the magnetic field intensity in the ozone generator pipeline at the current time, and controlling the generation of ozone in the ozone generator.

[0011] In one of the embodiments, the fifth mapping relationship is: U(t0)=U(t -1 )+20*(K(t0)-K(t -1 )), wherein, U(t0) represents the voltage of the high-voltage power supply at the current time, U(t -1 ) represents the voltage of the high-voltage power supply at the previous time, K(t0) represents the torque of the engine at the current time, K(t -1 ) represents the torque of the engine at the previous time; the sixth mapping relationship is: wherein, DT(t0) represents the driving pulse width of the driving circuit at the current time, DT(t -1 ) represents the driving pulse width of the driving circuit at the previous time; the seventh mapping relationship is: wherein, B(t0) represents the magnetic field intensity at the current time, B(t -1 ) represents the magnetic field intensity at the first historical time, B(t -2 ) represents the magnetic field intensity at the second historical time, rms(E, t -1 , t0) represents the root mean square value of the electron concentration in the ozone generator pipeline within the first historical time period between t0 and t -1 ; rms(E, t -2 , t -1 ) represents the root mean square value of the electron concentration in the ozone generator pipeline within the second historical time period between t -1 and t -2 .

[0012] In one of the embodiments, the generation of ozone in the ozone generator is controlled based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time, including: determining the third voltage as the voltage of the high-voltage power supply at the current time, and determining the third driving pulse width as the driving pulse width of the driving circuit at the current time, determining the second driving frequency as the driving frequency of the driving circuit at the current time, determining the second air volume as the air volume of the fan at the current time, and determining the third magnetic field strength as the magnetic field strength in the ozone generator pipeline at the current time, to control the generation of ozone in the ozone generator.

[0013] The application further provides a diesel engine system based on ozone combustion support, comprising: a diesel engine body and an ozone generator; wherein the ozone generator comprises: a high-voltage power supply, a driving circuit, an electrode, a pipeline, an air inlet, an air outlet, a fan, a magnetic field coil, and a Langmuir probe; wherein the voltage of the high-voltage power supply is adjustable; the driving circuit is used to control the on-off of the high-voltage power supply, so that a pulse voltage is loaded on the electrode, and the corresponding driving pulse width and driving frequency of the driving circuit are adjustable; the electrode is located in the pipeline, and the magnetic field coil is wound outside the electrode to generate a magnetic field; the fan discharges air into the air inlet, and the air is discharged from the air outlet after passing through the pipeline; the Langmuir probe is used to collect the electron density in the ozone generator pipeline; the diesel engine body comprises: an air inlet pipe pressure sensor, a torque sensor, a rotation speed sensor, and an electronic control unit; the air inlet pipe pressure sensor is used to collect the pressure value of the air inlet pipe in the diesel engine system; the torque sensor is used to collect the torque of the engine; the rotation speed sensor is used to collect the rotation speed of the engine; and the electronic control unit is used to execute the control method of any one of the diesel engine systems based on ozone combustion support.

[0014] The application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the control method of any one of the diesel engine systems based on ozone combustion support.

[0015] The application further provides a non-transitory computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to implement the steps of the control method of any one of the diesel engine systems based on ozone combustion support.

[0016] The ozone combustion-based diesel engine system and the control method thereof provided by the application determine the value of each element of the ozone generator based on the pressure of the intake pipe, the speed of the engine, and the mapping relationship between different pressure values of the intake pipe and different engine speeds corresponding to the working condition of the maximum engine torque or the least pollutants, at the initial moment of the initial engine start, to control the generation of ozone, thereby providing a control method, which can make the ozone generated by the ozone generator assist the engine operation, make the ozone combustion-based diesel engine system work in the optimal state, and also not produce excess ozone, thereby reducing the consumption of the energy source of the ozone generator. In addition, after the engine operates for a period of time, the value of each element of the ozone generator can be determined based on the operation of the engine in the historical time period, such as the torque, the speed, and the historical time, to determine the corresponding value of each element in the current ozone generator, thereby controlling the generation of ozone, which can make the ozone generated by the ozone generator assist the engine operation, make the ozone combustion-based diesel engine system work in the optimal state, and also not produce excess ozone, thereby reducing the consumption of the energy source of the ozone generator. In addition, the magnetic field strength in the ozone generator pipeline is controlled in the application to improve the accuracy of control. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 is a structural schematic diagram of the ozone generator provided by the application;

[0019] Figure 2 is one of the flow schematic diagrams of the control method of the ozone combustion-based diesel engine system provided by the application;

[0020] Figure 3 is the second flow schematic diagram of the control method of the ozone combustion-based diesel engine system provided by the application;

[0021] Figure 4 is the third flow schematic diagram of the control method of the ozone combustion-based diesel engine system provided by the application;

[0022] Figure 5 is a structural schematic diagram of the ozone combustion-based diesel engine system provided by the application. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] For the convenience of understanding, the technical terms related to the present application are explained first.

[0025] Ozone combustion-supporting: In addition to the strong oxidizing ability, the oxygen atom generated by the decomposition of ozone is also a new ecological activation center inducing the chain reaction of fuel, promoting the chain reaction propagation process of hydrocarbon fuel combustion, and having the effects of improving the combustion efficiency of diesel engine and reducing harmful gas emission.

[0026] It can be understood that, in the prior art, the ozone generator lacks an effective control system and method. For diesel engines in different working states, the ozone generator cannot adjust and optimize the state thereof. This results in that the ozone combustion-supporting diesel engine system cannot work in the optimal state, and the ozone generator also consumes more energy. Therefore, the present application provides an ozone combustion-supporting diesel engine system and a control method, which can improve the combustion efficiency of diesel engine and reduce harmful gas emission.

[0027] The ozone combustion-supporting diesel engine system and the control method thereof of the present application will be described below in conjunction with the accompanying drawings.

[0028] For the convenience of understanding, Figure 1 An exemplary block diagram of the ozone generator of the present application is given. As shown in the figure, Figure 1 The ozone generator provided by the present application comprises a high-voltage power supply 4, a driving circuit 5, an electrode 6, a pipeline 2, an air inlet 1, an air outlet 3, a fan 7, a magnetic field coil 8, and a Langmuir probe 9. The voltage of the high-voltage power supply 4 is adjustable, and a direct-current voltage in the range of 5000V-20000V is provided. The driving circuit 5 controls the on-off of the high-voltage power supply 4, so that a pulse voltage is loaded on the electrode 6, and the driving pulse width and driving frequency of the driving circuit 5 are adjustable. The electrode is located in the pipeline, and a magnetic field coil is wound outside the electrode for generating a magnetic field, and the stability is improved by controlling the magnetic field. The fan 7 of the ozone generator discharges air into the air inlet 1, discharges air from the air outlet 3 after passing through the pipeline 2, and the air volume of the fan 7 is adjustable. The gas discharged by the ozone generator is introduced into the air inlet pipe of the diesel engine.

[0029] Figure 2A flowchart of a control method of an ozone-assisted diesel engine system is provided. It can be understood that the control method of the ozone-assisted diesel engine system can be applied to the field of diesel engines and can be executed by an electronic control unit in the diesel engine, as shown in Figure 2 The method includes the following steps:

[0030] In step 210, when the current time is the initial time, the voltage of the high-voltage power supply at the current time, the driving pulse width and driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time are determined based on the first pressure value of the intake pipe in the diesel engine system at the current time, the first speed of the engine, and a plurality of preset mapping relationships. The magnetic field strength in the ozone generator pipeline at the current time is determined based on a preset initial value of the magnetic field strength. The preset mapping relationship is the mapping relationship between the ozone generator elements under the working condition of the maximum engine torque or the least pollutant corresponding to different pressure values of the intake pipe and different engine speeds in a historical time period.

[0031] The preset initial value of the magnetic field strength can be 1000 Gauss.

[0032] It can be understood that, as known from the foregoing, the ozone generator includes a high-voltage power supply, a driving circuit, a fan, and a magnetic field coil for generating a magnetic field. Therefore, in order to subsequently control the amount of ozone generated by the ozone generator according to the real-time pressure of the intake pipe and the speed of the engine, the amount of ozone generated by the ozone generator can be controlled by controlling the corresponding values of these elements in the ozone generator. In order to make the amount of generated ozone maximize the engine torque or minimize the pollutants emitted by the diesel engine, the working condition of the maximum engine torque or the least pollutant emitted by the diesel engine corresponding to the voltage of the high-voltage power supply, the driving pulse width and driving frequency of the driving circuit, the air volume of the fan, and the magnetic field strength in the ozone generator pipeline can be determined based on the data of the historical time period (different pressure values of the intake pipe and different engine speeds), thereby obtaining the corresponding mapping relationship between the pressure of the intake pipe and the speed of the engine and the voltage of the high-voltage power supply, the driving pulse width and driving frequency of the driving circuit, the air volume of the fan, and the magnetic field strength in the ozone generator pipeline.

[0033] For the convenience of understanding the determination process of the mapping relationship, taking the mapping relationship between the pressure of the intake pipe, the engine speed and the voltage of the high-voltage power supply as an example, through experiments on a bench machine, the voltage of the high-voltage power supply that makes the engine torque maximum or makes the pollutants emitted by the diesel engine minimum under different pressure values of the intake pipe and different engine speeds is obtained, so as to determine the mapping table of different pressure values and different engine speeds and the voltage of the high-voltage power supply, and then the corresponding mapping relationship can be obtained according to the mapping table through data fitting. It can be understood that the determination process of other mapping relationships is similar to the above mapping relationship, and for the sake of brevity, it will not be described here. It can also be understood that in actual application, according to the influence degree of the pressure of the intake pipe and the engine speed on the values of the elements in the ozone generator, one or both of the pressure of the intake pipe and the engine speed can be used to determine the corresponding mapping relationship.

[0034] The initial moment can be the initial moment of engine starting. It can be understood that the current moment can be the initial moment, or can not be the initial moment, so for the initial moment and the non-initial moment, the mapping relationship between the pressure of the intake pipe and the engine speed and the corresponding elements in the ozone generator can be different, so in order to more accurately control the ozone production amount of the ozone generator, the ozone generator can be controlled in stages, and specifically, the control process of the non-initial moment can refer to the process related to step 220.

[0035] Step 220, in the case that the current moment is not the initial moment, based on the second pressure value of the intake pipe in the diesel engine system at the current moment, the second speed of the engine at the current moment, the voltage of the high-voltage power supply at the last moment, the torque of the engine at the current moment and the last moment, the driving pulse width of the driving circuit at the last moment, the electron concentration in the ozone generator pipeline in the historical time period and the magnetic field intensity at the historical moment, the voltage of the high-voltage power supply at the current moment, the driving pulse width and the driving frequency of the driving circuit at the current moment, and the air volume of the fan at the current moment, and the magnetic field intensity in the ozone generator pipeline are determined.

[0036] It can be understood that if the last moment or the historical moment is the initial moment, the voltage of the high-voltage power supply at the last moment, the driving pulse width of the driving circuit at the last moment, and the magnetic field intensity at the historical moment can be obtained based on the preset mapping relationship corresponding to the initial moment; or, if the last moment or the historical moment is the non-initial moment, the voltage of the high-voltage power supply at the last moment, the driving pulse width of the driving circuit at the last moment, and the magnetic field intensity at the historical moment can be obtained based on the preset mapping relationship corresponding to the non-initial moment.

[0037] As described above, for non-initial time, the mapping relationship between the pressure of the intake pipe and the engine speed and the corresponding elements in the ozone generator may be different from that of the initial time. In this case, the corresponding mapping relationship (e.g., the magnetic field strength in the ozone generator pipe, which is determined by the electron concentration in the ozone generator pipe in the historical time period and the magnetic field strength at the historical time) can be obtained based on the values at the historical time or the historical time period. Moreover, since the values of the corresponding elements in the ozone generator at the initial time can be obtained by comparing the accurate mapping relationship, the values of the corresponding elements in the ozone generator at the non-initial time can be based on the values determined at the initial time (e.g., the voltage of the high-voltage power supply, the driving pulse width of the driving circuit, and the magnetic field strength in the ozone generator pipe at the non-initial time, which can be determined based on the voltage of the high-voltage power supply at the previous time, the driving pulse width of the driving circuit at the previous time, the magnetic field strength at the historical time, and the real-time change of the transmitter torque, respectively). In addition, the mapping relationship between the values of some elements in the ozone generator at the initial time and the non-initial time does not change significantly (e.g., the driving circuit and the driving frequency, and the air volume of the fan at the current time), so the mapping relationship at the initial time can be continued to be determined based on the mapping relationship at the initial time.

[0038] At step 230, based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipe at the current time, the generation of ozone in the ozone generator is controlled.

[0039] The control method of the diesel engine system based on the ozone combustion provided by the present application can determine the values of the elements in the ozone generator at the initial time when the engine is started for the first time, based on the pressure of the intake pipe, the speed of the engine, and the mapping relationship between the different pressure values of the intake pipe and the different engine speeds and the working conditions of the engine torque maximum or the least pollutants, and the mapping relationship between the elements in the ozone generator, to control the generation of ozone, thereby providing a control method that can make the ozone generated by the ozone generator assist the engine to work, so that the ozone combustion diesel engine system works in the optimal state, and does not produce excess ozone, thereby reducing the consumption of energy of the ozone generator. In addition, after the engine runs for a period of time, the values of the elements in the ozone generator can be determined based on the operation of the engine at the historical time period, such as torque, speed, and historical time, to determine the values of the corresponding elements in the current ozone generator, thereby controlling the generation of ozone, so that the ozone generated by the ozone generator can assist the engine to work, so that the ozone combustion diesel engine system works in the optimal state, and does not produce excess ozone, thereby reducing the consumption of energy of the ozone generator. In addition, in the present application, the magnetic field strength in the ozone generator pipe is controlled to improve the accuracy of control.

[0040] In one embodiment, as Figure 3As shown, the first pressure value of the intake pipe in the diesel engine system at the current time, the first speed of the engine, and a plurality of preset mapping relationships are used to determine the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time, including the following steps:

[0041] In step 310, a first voltage of the high-voltage power supply at the current time is determined based on the first pressure value and a first mapping relationship. The first mapping relationship is a relationship between the voltage of the high-voltage power supply and the pressure of the intake pipe, and the voltage of the high-voltage power supply and the pressure of the intake pipe are in an exponential mapping relationship.

[0042] In one embodiment, the first mapping relationship is U = 1200 + e -0.26P , where U represents the voltage of the high-voltage power supply, and P represents the pressure of the intake pipe.

[0043] Specifically, in step 310, the first pressure value can be taken as the pressure P of the intake pipe, and substituted into the first mapping relationship to obtain the first voltage of the high-voltage power supply at the current time.

[0044] In step 320, a first driving pulse width of the driving circuit at the current time is determined based on the first pressure value, the first speed, and a second mapping relationship. The second mapping relationship is a relationship between the driving pulse width of the driving circuit and the pressure of the intake pipe and the speed of the engine, and the driving pulse width of the driving circuit is positively correlated with the product of the pressure of the intake pipe and the speed of the engine.

[0045] In one embodiment, the second mapping relationship is DT = 0.1 * P * A, where DT represents the driving pulse width of the driving circuit, and A represents the speed of the engine.

[0046] Specifically, in step 320, the first pressure value can be taken as the pressure P of the intake pipe, and the first speed can be taken as the speed A of the engine, and substituted into the second mapping relationship to obtain the first driving pulse width of the driving circuit at the current time.

[0047] In step 330, a first driving frequency of the driving circuit at the current time is determined based on the first pressure value, the first speed, and a third mapping relationship. The third mapping relationship is a relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the speed of the engine, and the driving frequency of the driving circuit is inversely proportional to the pressure of the intake pipe and positively correlated with the speed of the engine.

[0048] In one embodiment, the third mapping relationship is F = A 1.4 + 20 / P, where F represents the driving frequency of the driving circuit.

[0049] Specifically, the step 330 can be: substituting the first pressure value as the pressure P of the intake pipe and the first rotating speed as the engine rotating speed A into the third mapping relationship to obtain the first driving frequency of the driving circuit at the current time.

[0050] The step 340 is to determine the first air volume of the fan at the current time based on the first rotating speed and the fourth mapping relationship; the fourth mapping relationship is a relationship between the air volume of the fan and the engine rotating speed, and the air volume of the fan is positively correlated with the engine rotating speed.

[0051] In one of the embodiments, the fourth mapping relationship is: V = 3 + 0.2*A; wherein V represents the air volume of the fan.

[0052] Specifically, the step 340 can be: substituting the second rotating speed as the engine rotating speed A into the fourth mapping relationship to obtain the first air volume of the fan at the current time.

[0053] It can be understood that there is no explicit execution order between the above steps 310 to 340, which can be executed in sequence or in parallel.

[0054] In combination with the above Figure 3 The step 230 includes:

[0055] The first voltage is determined as the voltage of the high-voltage power supply at the current time, the first driving pulse width is determined as the driving pulse width of the driving circuit at the current time, the first driving frequency is determined as the driving frequency of the driving circuit at the current time, the first air volume is determined as the air volume of the fan at the current time, and the preset initial value of the magnetic field strength is determined as the magnetic field strength in the ozone generator pipeline at the current time, and the generation of ozone in the ozone generator is controlled.

[0056] It can be understood that the present application only exemplarily shows one possible form of the plurality of mapping relationships, and in actual application, the corresponding coefficients in the mapping relationships mentioned in the present application can be changed.

[0057] In one of the embodiments, as Figure 4 shown, the determination of the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second rotating speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field strength at the historical time includes:

[0058] Step 410, determining the third voltage of the high-voltage power supply at the current time based on the second voltage of the high-voltage power supply at the last time, the first torque of the engine at the last time, the second torque of the engine at the current time, and a fifth mapping relationship.

[0059] The fourth mapping relationship is a relationship between the voltage of the high-voltage power supply at the current time and the voltage of the high-voltage power supply at the last time, the torque of the engine at the last time, and the torque of the engine at the current time. The voltage of the high-voltage power supply at the current time is positively correlated with the voltage of the high-voltage power supply at the last time, and is positively correlated with the difference between the torque of the engine at the last time and the torque of the engine at the current time.

[0060] In one of the embodiments, the fifth mapping relationship is U(t0) = U(t -1 )+20*(K(t0)-K(t -1 )), where U(t0) represents the voltage of the high-voltage power supply at the current time, U(t -1 ) represents the voltage of the high-voltage power supply at the last time, K(t0) represents the torque of the engine at the current time, and K(t -1 ) represents the torque of the engine at the last time.

[0061] Specifically, step 410 can be: substituting the second voltage of the high-voltage power supply at the last time as the voltage of the high-voltage power supply at the last time, the first torque of the engine at the last time as the torque of the engine at the last time, and the second torque of the engine at the current time as the torque of the engine at the current time into the fifth mapping relationship to obtain the third voltage of the high-voltage power supply at the current time. The last time can be a time corresponding to 0.1s of the current time, i.e., t -1 =t0-0.1. The last time can be a time corresponding to 0.01s of the current time.

[0062] Step 420, determining the third drive pulse width of the drive circuit at the current time based on the second drive pulse width of the drive circuit at the last time, the first torque of the engine at the last time, the second torque of the engine at the current time, and a sixth mapping relationship.

[0063] The sixth mapping relationship is a relationship between the drive pulse width of the drive circuit at the current time and the drive pulse width of the drive circuit at the last time, the torque of the engine at the last time, and the torque of the engine at the current time. The drive pulse width of the drive circuit at the current time is negatively correlated with the quotient of the torque of the engine at the current time and the torque of the engine at the last time, and is positively correlated with the drive pulse width of the drive circuit at the last time.

[0064] In one of the embodiments, the sixth mapping relationship is: where DT(t0) represents the drive pulse width of the drive circuit at the current time, DT(t-1 ) represents the driving pulse width of the driving circuit at the last time.

[0065] Specifically, the step 420 can be: substituting the second driving pulse width of the driving circuit at the last time as the driving pulse width of the driving circuit at the last time, the first torque of the engine at the last time as the torque of the engine at the last time, the second torque of the engine at the current time as the torque of the engine at the current time into the sixth mapping relationship, to obtain the third driving pulse width of the driving circuit at the current time.

[0066] The step 430 determines the second driving frequency of the driving circuit at the current time based on the second pressure value, the second rotating speed, and the third mapping relationship.

[0067] The third mapping relationship is a relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the rotating speed of the engine, the driving frequency of the driving circuit is inversely proportional to the pressure of the intake pipe and proportional to the rotating speed of the engine.

[0068] In one of the embodiments, the third mapping relationship is: F=A 1.4 +20 / P; wherein F represents the driving frequency of the driving circuit.

[0069] Specifically, the step 430 can be: substituting the second pressure value as the pressure P of the intake pipe and the second rotating speed as the rotating speed A of the engine into the third mapping relationship to obtain the second driving frequency of the driving circuit at the current time.

[0070] The step 440 determines the second air volume of the fan at the current time based on the second rotating speed and the fourth mapping relationship.

[0071] The fourth mapping relationship is a relationship between the air volume of the fan and the rotating speed of the engine, the air volume of the fan is positively correlated with the rotating speed of the engine.

[0072] In one of the embodiments, the fourth mapping relationship is: V=3+0.2*A; wherein V represents the air volume of the fan.

[0073] Specifically, the step 440 can be: substituting the second rotating speed as the rotating speed A of the engine into the fourth mapping relationship to obtain the second air volume of the fan at the current time.

[0074] The step 450 determines the third magnetic field intensity at the current time based on the first magnetic field intensity at the first historical time, the second magnetic field intensity at the second historical time, the first electron concentration in the ozone generator pipeline within the first historical time period, the second electron concentration in the ozone generator pipeline within the second historical time period, and the seventh mapping relationship.

[0075] In one of the embodiments, the seventh mapping relationship is:

[0076] Among them, B(t0) represents the magnetic field strength at the current moment, B(t -1 ) represents the magnetic field intensity at the first historical moment, B(t -2 ) represents the magnetic field intensity at the second historical moment, rms(E, t -1 , t0) means from t0 to t -1 The root mean square value of the electron concentration in the ozone generator pipeline during the first historical period between time t -2 , t -1 ) indicates that from t -1 to t -2 The root mean square value of the electron concentration in the ozone generator pipeline during the second historical time period between the times.

[0077] Specifically, step 450 can be: using the first magnetic field strength at the first historical moment as the magnetic field strength at the first historical moment; using the second magnetic field strength at the second historical moment as the magnetic field strength at the second historical moment; using the root mean square value of the first electron concentration in the ozone generator pipe during the first historical time period as the root mean square value of the electron concentration in the ozone generator pipe during the first historical time period; using the root mean square value of the first electron concentration in the ozone generator pipe during the first historical time period as the root mean square value of the electron concentration in the ozone generator pipe during the first historical time period; and obtaining the third magnetic field strength at the current moment.

[0078] The first historical moment can be the moment corresponding to 0.001s of the current moment, that is, t -1 =t0-0.001. The first historical moment can also be the moment corresponding to 0.01s of the current moment. The second historical moment can be the moment corresponding to 0.002s of the current moment, that is, t -2 =t0-0.002.

[0079] It is understandable that there is no clear execution order between the above steps 410 to 450, and they can be executed in sequence or in parallel.

[0080] Combined with the above Figure 4 The steps shown, the above step 230, include: determining the third voltage as the voltage of the high-voltage power supply at the current moment, determining the third drive pulse width as the drive pulse width of the drive circuit at the current moment, determining the second drive frequency as the drive frequency of the drive circuit at the current moment, determining the second air volume as the air volume of the fan at the current moment, and determining the third magnetic field strength as the magnetic field strength in the ozone generator pipe at the current moment, to control the generation of ozone in the ozone generator.

[0081] The following describes the diesel engine system based on ozone-assisted combustion provided by the present invention.

[0082] Figure 5 is a schematic diagram of the ozone combustion-based diesel engine system provided by the present application, as shown in Figure 5 The control system of the ozone combustion-based diesel engine system provided by the present application comprises a diesel engine body 510 and an ozone generator 520.

[0083] The ozone generator 520 comprises a high-voltage power supply, a driving circuit, an electrode, a pipeline, an air inlet, an air outlet, a fan, a magnetic field coil, and a Langmuir probe. The voltage of the high-voltage power supply is adjustable. The driving circuit is used to control the on-off of the high-voltage power supply, so that a pulse voltage is loaded on the electrode. The driving pulse width and frequency of the driving circuit are adjustable. The electrode is located in the pipeline, and the magnetic field coil is wound outside the electrode to generate a magnetic field. The fan discharges air into the air inlet, and then discharges it from the air outlet after passing through the pipeline. The Langmuir probe is used to collect the electron density in the ozone generator pipeline.

[0084] The diesel engine body 510 comprises an intake pipe pressure sensor, a torque sensor, a speed sensor, and an electronic control unit. The intake pipe pressure sensor is used to collect the pressure value of the intake pipe in the diesel engine system. The torque sensor is used to collect the torque of the engine. The speed sensor is used to collect the speed of the engine. The electronic control unit is used to execute the control method of the ozone combustion-based diesel engine system.

[0085] The ozone combustion-based diesel engine system provided by the present application determines the values of the elements of the ozone generator at the initial moment of the initial engine start, based on the pressure of the intake pipe in the diesel engine system, the speed of the engine, and the mapping relationship between different pressure values of the intake pipe and different engine speeds corresponding to the working conditions with the maximum engine torque or the least pollutants, to control the generation of ozone, thereby providing a control method that can make the ozone generated by the ozone generator assist the engine operation, make the ozone combustion-based diesel engine system work in the optimal state, and also not produce excess ozone, thereby reducing the consumption of energy of the ozone generator. In addition, after the engine runs for a period of time, the values of the elements of the ozone generator can be determined based on the operation of the engine in the historical time period, such as torque, speed, and historical time, to determine the corresponding values of the elements in the current ozone generator, thereby controlling the generation of ozone, so that the ozone generated by the ozone generator can assist the engine operation, make the ozone combustion-based diesel engine system work in the optimal state, and also not produce excess ozone, thereby reducing the consumption of energy of the ozone generator. In addition, the magnetic field strength in the ozone generator pipeline is controlled in the present application to improve the accuracy of control.

[0086] In one embodiment, a computer device is provided, which comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the following steps of the control method of the ozone combustion-supporting diesel engine system when executing the computer program: in the case that the current time is an initial time, based on the first pressure value of the intake pipe in the diesel engine system at the current time, the first rotation speed of the engine, and a plurality of preset mapping relationships, the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time are determined respectively; and based on a preset initial value of the magnetic field strength, the magnetic field strength in the ozone generator pipeline at the current time is determined; wherein the preset mapping relationship is the mapping relationship between each element of the ozone generator under the working condition of the maximum engine torque or the least pollutant in the historical time period, corresponding to different pressure values of the intake pipe and different rotation speeds of the engine; or in the case that the current time is not the initial time, based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second rotation speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field strength at the historical time, the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time are determined; based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time, the generation of ozone in the ozone generator is controlled.

[0087] In another aspect, the present application also provides a computer program product, which comprises a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the control method of the ozone-assisted combustion-based diesel engine system provided by the present application, the method comprising: in the case that the current time is an initial time, determining the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time based on the first pressure value of the intake pipe in the diesel engine system at the current time, the first rotational speed of the engine, and a plurality of preset mapping relationships; and determining the magnetic field strength in the ozone generator pipeline at the current time based on a preset initial value of the magnetic field strength; wherein the preset mapping relationship is a mapping relationship between each element of the ozone generator in the case that the engine torque is maximum or the pollutant is minimum under the working condition of different pressure values of the intake pipe and different rotational speeds of the engine in a historical time period; or in the case that the current time is not the initial time, determining the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second rotational speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the current time and at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field strength at the historical time; and controlling the generation of ozone in the ozone generator based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time.

[0088] In another aspect, the application further provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the control method of the ozone-assisted diesel engine system provided by the application. The method includes: in the case that the current time is an initial time, determining the voltage of the high-voltage power supply at the current time, the driving pulse width and driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time based on the first pressure value of the intake pipe in the diesel engine system at the current time, the first rotation speed of the engine, and a plurality of preset mapping relationships; and determining the magnetic field strength in the ozone generator pipeline at the current time based on a preset initial value of the magnetic field strength; wherein the preset mapping relationship is a mapping relationship between each element of the ozone generator in the case that the engine torque is maximum or the pollutant is minimum under the working condition of different pressure values of the intake pipe and different rotation speeds of the engine in a historical time period; or in the case that the current time is not the initial time, determining the voltage of the high-voltage power supply at the current time, the driving pulse width and driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second rotation speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field strength at the historical time; and controlling the generation of ozone in the ozone generator based on the voltage of the high-voltage power supply at the current time, the driving pulse width and driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time.

[0089] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0090] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software and necessary universal hardware platforms, and of course can also be implemented by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes a plurality of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0091] It can be understood that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for an ozone-assisted diesel engine system, characterized by, The method comprises the following steps: In the case that the current time is the initial time, based on the first pressure value of the intake pipe in the diesel engine system at the current time, the first speed of the engine, and a plurality of preset mapping relationships, the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, and the air volume of the fan at the current time are determined respectively; and based on the preset initial value of the magnetic field strength, the magnetic field strength in the ozone generator pipeline at the current time is determined; wherein the preset mapping relationship is the mapping relationship between the ozone generator elements under the condition that the engine torque is maximum or the pollutant is minimum in the historical time period with different pressure values and different engine speeds of the intake pipe. In the case that the current time is not the initial time, based on the second pressure value of the intake pipe in the diesel engine system at the current time, the second speed of the engine at the current time, the voltage of the high-voltage power supply at the previous time, the torque of the engine at the current time and at the previous time, the driving pulse width of the driving circuit at the current time and at the previous time, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field strength at the historical time, the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time are determined. Based on the voltage of the high-voltage power supply at the current time, the driving pulse width and the driving frequency of the driving circuit at the current time, the air volume of the fan at the current time, and the magnetic field strength in the ozone generator pipeline at the current time, the generation of ozone in the ozone generator is controlled.

2. The control method of the ozone combustion-supporting diesel engine system according to claim 1, characterized by The method comprises the following steps: Based on the first pressure value and the first mapping relationship, the first voltage of the high-voltage power supply at the current time is determined; the first mapping relationship is the relationship between the voltage of the high-voltage power supply and the pressure of the intake pipe, and the voltage of the high-voltage power supply and the pressure of the intake pipe are in an exponential mapping relationship; Based on the first pressure value, the first speed, and the second mapping relationship, the first driving pulse width of the driving circuit at the current time is determined; the second mapping relationship is the relationship between the driving pulse width of the driving circuit and the pressure of the intake pipe and the speed of the engine, and the driving pulse width of the driving circuit is positively correlated with the product of the pressure of the intake pipe and the speed of the engine; Based on the first pressure value, the first speed, and the third mapping relationship, the first driving frequency of the driving circuit at the current time is determined; the third mapping relationship is the relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the speed of the engine, and the driving frequency of the driving circuit is negatively correlated with the pressure of the intake pipe and positively correlated with the speed of the engine; Based on the first speed and the fourth mapping relationship, the first air volume of the fan at the current time is determined; the fourth mapping relationship is the relationship between the air volume of the fan and the speed of the engine, and the air volume of the fan is positively correlated with the speed of the engine.

3. The control method of the ozone combustion-supporting diesel engine system according to claim 1, characterized by The method comprises the following steps: determining the voltage of the high-voltage power supply at the current moment, the driving pulse width and the driving frequency of the driving circuit at the current moment, the air volume of the fan at the current moment, and the magnetic field intensity in the ozone generator pipeline at the current moment based on the second pressure value of the intake pipe in the diesel engine system at the current moment, the second rotating speed of the engine at the current moment, the voltage of the high-voltage power supply at the previous moment, the torque of the engine at the current moment and at the previous moment, the driving pulse width of the driving circuit at the previous moment, the electron concentration in the ozone generator pipeline in the historical time period, and the magnetic field intensity at the historical moment. The third voltage of the high-voltage power supply at the current moment is determined based on the second voltage of the high-voltage power supply at the previous moment, the first torque of the engine at the previous moment, the second torque of the engine at the current moment, and a fifth mapping relationship; the fifth mapping relationship is a relationship between the voltage of the high-voltage power supply at the current moment and the voltage of the high-voltage power supply at the previous moment, the torque of the engine at the previous moment, and the torque of the engine at the current moment, the voltage of the high-voltage power supply at the current moment is positively correlated with the voltage of the high-voltage power supply at the previous moment, and the voltage of the high-voltage power supply at the current moment is positively correlated with the difference between the torque of the engine at the previous moment and the torque of the engine at the current moment. The third driving pulse width of the driving circuit at the current moment is determined based on the second driving pulse width of the driving circuit at the previous moment, the first torque of the engine at the previous moment, the second torque of the engine at the current moment, and a sixth mapping relationship; the sixth mapping relationship is a relationship between the driving pulse width of the driving circuit at the current moment and the driving pulse width of the driving circuit at the previous moment, the torque of the engine at the previous moment, and the torque of the engine at the current moment, the driving pulse width of the driving circuit at the current moment is negatively correlated with the quotient of the torque of the engine at the previous moment and the torque of the engine at the current moment, and is positively correlated with the driving pulse width of the driving circuit at the previous moment. The second driving frequency of the driving circuit at the current moment is determined based on the second pressure value, the second rotating speed, and a third mapping relationship; the third mapping relationship is a relationship between the driving frequency of the driving circuit and the pressure of the intake pipe and the rotating speed of the engine, the driving frequency of the driving circuit is negatively correlated with the pressure of the intake pipe, and is positively correlated with the rotating speed of the engine. The second air volume of the fan at the current moment is determined based on the second rotating speed and a fourth mapping relationship; the fourth mapping relationship is a relationship between the air volume of the fan and the rotating speed of the engine, the air volume of the fan is positively correlated with the rotating speed of the engine. The third magnetic field intensity at the current moment is determined based on the first magnetic field intensity at the first historical moment, the second magnetic field intensity at the second historical moment, the first electron concentration in the ozone generator pipeline in the first historical time period, the second electron concentration in the ozone generator pipeline in the second historical time period, and a seventh mapping relationship.

4. The control method of the ozone combustion-supporting diesel engine system according to claim 2, characterized by The first mapping relationship is: U=1200+e -0.26P wherein U represents the voltage of the high-voltage power supply, and P represents the pressure of the intake pipe. The second mapping relationship is DT=0.1*P*A, wherein DT represents the driving pulse width of the driving circuit, and A represents the rotating speed of the engine. The third mapping relationship is: F=A 1.4 +20 / P; wherein, F represents the driving frequency of the driving circuit; The fourth mapping relationship is V=3+0.2*A; wherein V represents the air volume of the fan.

5. The control method of the ozone combustion-supporting diesel engine system according to claim 2, characterized by The generation of ozone in the ozone generator is controlled based on the voltage of the high-voltage power supply at the current moment, the driving pulse width and the driving frequency of the driving circuit at the current moment, the air volume of the fan at the current moment, and the magnetic field strength in the ozone generator pipeline at the current moment, and the generation of ozone in the ozone generator is controlled. The first voltage is determined as the voltage of the high-voltage power supply at the current moment, the first driving pulse width is determined as the driving pulse width of the driving circuit at the current moment, the first driving frequency is determined as the driving frequency of the driving circuit at the current moment, the first air volume is determined as the air volume of the fan at the current moment, and the preset initial value of the magnetic field strength is determined as the magnetic field strength in the ozone generator pipeline at the current moment, and the generation of ozone in the ozone generator is controlled.

6. The control method of the ozone combustion-supporting diesel engine system according to claim 3, characterized in that, The fifth mapping relationship is: U(t0) = U(t -1 ) + 20*(K(t0) - K(t -1 )), wherein, U(t0) represents the voltage of the high-voltage power supply at the current moment, U(t -1 ) represents the voltage of the high-voltage power supply at the last moment, K(t0) represents the torque of the engine at the current moment, and K(t -1 ) represents the torque of the engine at the last moment. The sixth mapping relationship is: Wherein, DT(t0) represents the driving pulse width of the driving circuit at the current time, DT(t -1 ) represents the driving pulse width of the driving circuit at the last time. The seventh mapping relationship is: where B(t0) represents the magnetic field strength at the current time, B(t -1 ) represents the magnetic field strength at the first historical time, B(t -2 ) represents the magnetic field strength at the second historical time, rms(E, t -1 , t0) represents the root mean square value of the electron concentration in the ozone generator conduit during a first historical time period between t0 and t -1 ; rms(E, t -2 , t -1 ) represents the root mean square value of the electron concentration in the ozone generator conduit during a second historical time period between t -1 and t -2 .

7. The control method of the ozone-assisted combustion-based diesel engine system according to claim 3, characterized by, The generation of ozone in the ozone generator is controlled based on the voltage of the high-voltage power supply at the current moment, the driving pulse width and the driving frequency of the driving circuit at the current moment, the air volume of the fan at the current moment, and the magnetic field strength in the ozone generator pipeline at the current moment, and the generation of ozone in the ozone generator is controlled. The third voltage is determined as the voltage of the high-voltage power supply at the current moment, the third driving pulse width is determined as the driving pulse width of the driving circuit at the current moment, the second driving frequency is determined as the driving frequency of the driving circuit at the current moment, the second air volume is determined as the air volume of the fan at the current moment, and the third magnetic field strength is determined as the magnetic field strength in the ozone generator pipeline at the current moment, and the generation of ozone in the ozone generator is controlled.

8. An ozone-assisted diesel engine system, characterized by It comprises: The diesel engine body and the ozone generator; The ozone generator comprises a high-voltage power supply, a driving circuit, an electrode, a pipeline, an air inlet, an air outlet, a fan, a magnetic field coil, and a Langmuir probe. The voltage of the high-voltage power supply is adjustable. The driving circuit is used to control the on-off of the high-voltage power supply, so that a pulse voltage is loaded on the electrode. The driving pulse width and the driving frequency of the driving circuit are adjustable. The electrode is located in the pipeline, and the magnetic field coil is wound outside the electrode to generate a magnetic field. The fan discharges air into the air inlet, and then discharges it from the air outlet after passing through the pipeline. The Langmuir probe is used to collect the electron density in the ozone generator pipeline. The diesel engine body comprises an air pipe pressure sensor, a torque sensor, a speed sensor, and an electronic control unit. The air pipe pressure sensor is used to collect the pressure value of the air pipe in the diesel engine system. The torque sensor is used to collect the torque of the engine. The speed sensor is used to collect the speed of the engine. The electronic control unit is used to execute the control method of the ozone combustion-supporting diesel engine system according to any one of claims 1 to 7.

9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the steps of the control method of the ozone combustion-supporting diesel engine system according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the control method of the ozone combustion-supporting diesel engine system according to any one of claims 1 to 7.

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