Two-stroke free piston power generation system based on jet ignition and control method

Abstract

The invention provides a jet ignition-based two-stroke free piston power generation system and a control method, and relates to the technical field of internal combustion power generation systems, the jet ignition-based two-stroke free piston power generation system comprises a linear motor, a connecting rod assembly, a jet ignition two-stroke free piston engine and a state recognition system; a rotor main shaft of the linear motor is connected with a piston of the jet ignition two-stroke free piston engine through a connecting rod assembly; an efficient electromagnetic valve is installed between a main combustion chamber and a pre-combustion chamber of the jet ignition two-stroke free piston engine. The operating state of the two-stroke free piston power generation system is recognized through the state recognition system, and a corresponding instruction is sent to the two-stroke free piston power generation system so as to control the efficient electromagnetic valve to be opened or closed. The method can better adapt to application requirements under different working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of internal combustion power generation systems, and in particular to a two-stroke free piston power generation system based on jet ignition and a control method thereof. Background Art

[0002] The two-stroke free piston power generation system based on jet ignition is an innovative energy conversion device that combines a free piston engine and jet ignition technology. The free piston internal combustion generator is a power device formed by coupling a free piston engine with a linear motor. When the piston moves linearly in the free piston starting cylinder, it directly drives the mover to reciprocate in the linear motor to cut the magnetic flux lines to generate electrical energy, and directly converts the chemical energy generated by fuel combustion into electrical energy. The jet ignition technology ignites a small amount of fuel in the premixing chamber to form a high-energy jet, guides the fuel in the main combustion chamber to ignite quickly, and achieves stable and efficient combustion.

[0003] The two-stroke free piston power generation system based on jet ignition can significantly improve combustion efficiency, reduce fuel consumption and exhaust emissions. It can also effectively respond to changing operating environments through its modular and adaptive control system, meeting the urgent needs of the modern automotive industry for efficient and low-emission energy solutions.

[0004] The existing free-piston internal combustion generator lacks a crank-connecting rod mechanism, the combustion duration in the cylinder is long, the combustion cycle fluctuates greatly, and the adaptability to different driving conditions is poor. When driving on urban roads, the engine's output power is too wasted and the fuel consumption is too high. When driving on highways, the engine's economy is poor. When driving on mountain roads, due to complex road conditions, the engine's cycle fluctuates violently and the power is low, which seriously affects the performance, economy and reliability of the free-piston internal combustion generator. Summary of the invention

[0005] In order to solve the technical problems that the existing free piston internal combustion generator lacks a crank-connecting rod mechanism, has a long combustion duration in the cylinder, large combustion cycle fluctuations, and poor adaptability to different driving conditions, when driving on urban roads, the engine's output power is too wasted and the fuel consumption is too high, when driving on highways, the engine's economy is poor, and when driving on mountain roads, due to complex road conditions, the engine's cycle fluctuations are violent and the power is low, which seriously affects the performance, economy and reliability of the free piston internal combustion generator, the present invention provides a two-stroke free piston power generation system based on jet ignition and a control method.

[0006] The technical solution provided by the embodiment of the present invention is as follows:

[0007] First aspect

[0008] The two-stroke free piston power generation system based on jet ignition provided by the embodiment of the present invention comprises: a linear motor, a connecting rod assembly, a jet ignition two-stroke free piston engine and a state recognition system;

[0009] The mover spindle of the linear motor is connected to the piston of the jet ignition two-stroke free piston engine through a connecting rod assembly;

[0010] A high-efficiency electromagnetic valve is installed between the main combustion chamber and the pre-combustion chamber of the jet-ignition two-stroke free-piston engine;

[0011] The operating state of the two-stroke free piston power generation system is identified through the state identification system, and corresponding instructions are issued to the two-stroke free piston power generation system to control the high-efficiency electromagnetic valve to open or close.

[0012] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0013] In the present invention, through the direct connecting rod connection between the linear motor and the jet ignition two-stroke free piston engine, the energy transfer efficiency is high, the energy loss in the traditional crank-connecting rod mechanism is reduced, the reciprocating motion of the linear motor is more efficiently converted into the kinetic energy of the piston, and the overall energy efficiency of the system is improved. By installing a high-efficiency electromagnetic valve between the pre-combustion chamber and the main combustion chamber, abnormal fluctuations and possible damages in the combustion process are reduced, and the reliability and durability of the entire power generation system are enhanced. The state recognition system integrates a variety of sensors and monitoring tools, which can detect and identify the operating status of the engine in real time and dynamically adjust the operating parameters to adapt to different driving conditions and improve the performance, economy and reliability of the motor.

[0014] Second aspect

[0015] The control method provided by the embodiment of the present invention is applied to the two-stroke free piston power generation system based on jet ignition in the first aspect, and the method comprises:

[0016] S1: Acquire driving conditions, which include urban road driving conditions, highway driving conditions, and mountain road driving conditions.

[0017] S2: According to the driving conditions, the two-stroke free piston power generation system is controlled to generate electricity in different ways to optimize the working process of the two-stroke free piston power generation system.

[0018] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0019] In the present invention, through the direct connecting rod connection between the linear motor and the jet ignition two-stroke free piston engine, the energy transfer efficiency is high, the energy loss in the traditional crank-connecting rod mechanism is reduced, the reciprocating motion of the linear motor is more efficiently converted into the kinetic energy of the piston, and the overall energy efficiency of the system is improved. By installing a high-efficiency electromagnetic valve between the pre-combustion chamber and the main combustion chamber, abnormal fluctuations and possible damages in the combustion process are reduced, and the reliability and durability of the entire power generation system are enhanced. The state recognition system integrates a variety of sensors and monitoring tools, which can detect and identify the operating status of the engine in real time and dynamically adjust the operating parameters to adapt to different driving conditions and improve the performance, economy and reliability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a two-stroke free piston power generation system based on jet ignition provided by an embodiment of the present invention;

[0022] Figure 2 A flow chart of a control method provided by an embodiment of the present invention.

[0023] [reference numerals]

[0024] 1. Main shaft of the mover; 2. Permanent magnet; 3. Stator of the linear motor; 4. Housing of the linear motor; 5. Spring seat at the motor end; 6. Spring; 7. Connecting rod; 8. Spring seat at the piston end; 9. Injector; 10. Intake pipe; 11. Cylinder block; 12. Piston; 13. Piston pin; 14. Piston ring; 15. In-cylinder pressure sensor; 16. High-efficiency electromagnetic valve; 17. Pre-combustion chamber; 18. Spark plug for the pre-combustion chamber; 19. Cylinder wall temperature sensor; 20. Spark plug for the main combustion chamber; 21. Oxygen sensor; 22. Exhaust temperature sensor; 23. Exhaust pipe; 24. Base; 25. Sleeve; 26 Linear motor displacement sensor.

[0025] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is described below in conjunction with the accompanying drawings. It is also noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0027] It should be noted that the embodiments indicated by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" etc. in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field to implement such feature, structure or characteristic in conjunction with other embodiments (whether explicitly described or not).

[0028] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0029] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0030] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0031] like Figure 1As shown, an embodiment of the present invention provides a two-stroke free piston power generation system based on jet ignition, comprising: a linear motor, a connecting rod assembly, a jet ignition two-stroke free piston engine and a state recognition system;

[0032] The mover spindle 1 of the linear motor is connected to the piston 12 of the jet ignition two-stroke free piston engine through a connecting rod assembly;

[0033] A high-efficiency electromagnetic valve 16 is installed between the main combustion chamber and the pre-combustion chamber 17 of the jet ignition two-stroke free piston engine;

[0034] The operating state of the two-stroke free piston power generation system is identified by the state identification system, and corresponding instructions are issued to the two-stroke free piston power generation system to control the high-efficiency electromagnetic valve 16 to be opened or closed.

[0035] It should be noted that the system achieves high-efficiency energy conversion and precise combustion control by integrating free-piston linear motors and jet ignition technology, optimizes fuel utilization and reduces emissions. The state recognition system can monitor the operating status in real time, and accurately adjust the combustion process through intelligent control of high-efficiency electromagnetic valves, thereby greatly improving power generation efficiency and reliability.

[0036] In a possible implementation, the linear motor includes a mover spindle 1, a permanent magnet 2, a linear motor stator 3 and a linear motor housing 4;

[0037] The linear motor stator 3 is installed inside the motor housing 4 , and the permanent magnet 2 is arranged on the mover main shaft 1 . The mover main shaft 1 is used to drive the permanent magnet 2 to perform reciprocating linear motion within the range of the linear motor stator 3 .

[0038] It should be noted that linear motors can directly convert electrical energy into linear motion, which improves the conversion efficiency of mechanical energy and reduces the energy loss of traditional rotary motors when converting motion. It can enhance the power output of the motor and maintain high efficiency of energy use.

[0039] In a possible implementation, the connecting rod assembly includes a motor end spring seat 5, a connecting rod 7, a spring 6 and a piston end spring seat 8;

[0040] The spring 6 is sleeved on the connecting rod 7;

[0041] The two ends of the connecting rod 7 are respectively connected to the mover main shaft 1 and the piston 12 by bolts.

[0042] It should be noted that by combining the motor-end spring seat, connecting rod, spring and piston-end spring seat, the vibration and impact generated by the movement of the linear motor and piston are effectively absorbed and buffered, thereby enhancing the stability and durability of the entire system.

[0043] In one possible embodiment, the jet ignition two-stroke free piston engine includes a cylinder 11, a piston 12, a main combustion chamber and a pre-combustion chamber 17;

[0044] The cylinder block 11 is provided with a fuel injector 9 and a main combustion chamber spark plug 20;

[0045] A pre-combustion chamber spark plug 18 and a high-efficiency electromagnetic valve 16 are installed in the pre-combustion chamber 17 .

[0046] It should be noted that by installing injectors and main combustion chamber spark plugs on the cylinder block and installing pre-combustion chamber spark plugs and high-efficiency solenoid valves in the pre-combustion chamber, the timing of fuel injection and ignition can be accurately controlled, thereby achieving more complete and efficient combustion. The spark plug in the pre-combustion chamber ignites a small portion of the fuel gas in advance, and quickly injects high-temperature and high-pressure gas into the main combustion chamber through the high-efficiency solenoid valve, promoting rapid and thorough combustion of the fuel in the main combustion chamber.

[0047] In a possible implementation, a high-efficiency electromagnetic valve 16 is installed at the nozzle position of the pre-combustion chamber 17. According to the feedback parameters of the state recognition system, it is determined whether it is necessary to open the high-efficiency electromagnetic valve 16 to introduce a jet ignition two-stroke free piston engine to improve the combustion process in the cylinder.

[0048] It should be noted that the high-efficiency electromagnetic valve installed in the pre-combustion chamber nozzle can accurately control the timing and amount of high-pressure fuel gas based on the real-time data feedback of the state recognition system, thereby optimizing the combustion efficiency of the main combustion chamber.

[0049] In a possible implementation, the state recognition system includes an in-cylinder pressure sensor 15, a cylinder wall temperature sensor 19, an oxygen sensor 21, an exhaust temperature sensor 22, and a linear motor displacement sensor 26;

[0050] The in-cylinder pressure sensor 15 is installed in the top area of ​​the main combustion chamber, and is used to detect the in-cylinder gas pressure during the main combustion chamber combustion process, so as to determine the current main combustion chamber combustion state of the two-stroke free piston power generation system and feed back the in-cylinder gas pressure to the control system;

[0051] The cylinder wall temperature sensor 19 is mounted on the outer ring of the cylinder head of the cylinder 11 and is used to detect the cylinder temperature to determine the current cooling state of the jet ignition two-stroke free piston engine and to feed back the cylinder temperature to the control system;

[0052] The oxygen sensor 21 is installed at the initial end of the exhaust pipe 23, and is used to detect the oxygen concentration in the exhaust gas to determine the air-fuel ratio of the current in-cylinder combustion of the jet ignition two-stroke free piston engine, and feed back the oxygen concentration to the control system;

[0053] The exhaust gas temperature sensor 22 is installed at the end of the exhaust pipe 23 to detect the exhaust gas temperature to determine whether the emission of the jet ignition two-stroke free piston engine meets the standard, and feed back the exhaust gas temperature to the control system;

[0054] The linear motor displacement sensor 26 is mounted on the linear motor housing 4 and is used to detect the system displacement to determine the current motion state of the jet ignition two-stroke free piston engine and feed back the system displacement to the control system.

[0055] Specifically, the state recognition system integrates multiple sensors to achieve detailed operation monitoring of the jet ignition two-stroke free piston engine. The key parameters monitored by each sensor, such as in-cylinder pressure, cylinder temperature, oxygen concentration, exhaust temperature and system displacement, enable the engine control system to obtain comprehensive real-time data, thereby accurately adjusting engine operation, optimizing performance, reducing emissions, and ensuring optimal operation of the machine under various operating conditions, significantly improving the reliability and efficiency of the system.

[0056] It should be noted that according to the in-cylinder gas pressure p, displacement information x, rigid body diameter D and the operating stroke S of the two-stroke free piston power generation system, the corresponding system work can be deduced:

[0057] V=0.25πD 2 (Sx)

[0058] W=∫pVdt

[0059] Among them, V represents the volume of the cylinder, D represents the diameter of the rigid body, S represents the operating stroke of the two-stroke free piston power generation system, x represents the displacement information, W represents the work of the two-stroke free piston power generation system, and p represents the gas pressure in the cylinder.

[0060] Reference Manual Attached Figure 2 , which shows a flow chart of a control method provided by an embodiment of the present invention.

[0061] The present invention also provides a control method, the method comprising:

[0062] S1: Acquire driving conditions, which include urban road driving conditions, highway driving conditions, and mountain road driving conditions.

[0063] It should be noted that obtaining driving conditions allows the system to adjust the operating mode according to different road conditions, improves the energy efficiency and performance of the engine, ensures optimal fuel economy and emission control in various driving environments, and also enhances driving experience and safety.

[0064] S2: According to the driving conditions, the two-stroke free piston power generation system is controlled to generate electricity in different ways to optimize the working process of the two-stroke free piston power generation system.

[0065] It should be noted that adjusting the operating mode of the power generation system according to driving conditions greatly improves energy utilization efficiency and responsiveness, allowing the system to automatically optimize its power generation strategy under urban, highway or mountain road conditions to adapt to different power requirements and combustion efficiency.

[0066] In a possible implementation manner, when the driving condition is an urban road driving condition, the method of controlling the two-stroke free piston power generation system to generate electricity is:

[0067] Detect the oxygen concentration in the exhaust gas through an oxygen sensor;

[0068] According to the oxygen concentration, the air-fuel ratio of the combustion in the cylinder is determined;

[0069] When the air-fuel ratio is lower than the preset air-fuel ratio, a jet ignition two-stroke free piston engine is introduced to generate electricity to increase the air-fuel ratio and avoid output power waste.

[0070] It should be noted that those skilled in the art can set the preset air-fuel ratio according to actual conditions, and the present invention does not limit this.

[0071] Specifically, by precisely controlling the air-fuel ratio of combustion, the combustion efficiency can be effectively optimized, fuel consumption can be reduced, and pollutant emissions can be reduced. When the air-fuel ratio is lower than the preset value, the system automatically adjusts the power generation strategy to ensure that the engine operates in the best state, thereby improving energy utilization efficiency and reducing environmental impact.

[0072] In a possible implementation manner, when the driving condition is a highway driving condition, the two-stroke free piston power generation system is controlled to generate electricity in the following manner:

[0073] The in-cylinder gas pressure during the combustion process of the main combustion chamber is detected by the in-cylinder pressure sensor;

[0074] Determine the combustion state of the main combustion chamber based on the gas pressure;

[0075] Determine the system operation state of the two-stroke free piston power generation system according to the combustion state;

[0076] When the system is in a stable operating state, a jet ignition two-stroke free piston engine is introduced to generate electricity to improve the economy of the system.

[0077] It should be noted that precise monitoring of combustion pressure through the in-cylinder pressure sensor can ensure that the engine automatically adjusts its operation according to the actual combustion efficiency to maintain optimal performance and fuel efficiency. Generating electricity when the system operating state is stable can maximize energy efficiency and reduce energy waste, while ensuring that the engine continues to provide stable and efficient power output at high speeds.

[0078] In a possible implementation manner, when the driving condition is a mountain road driving condition, the method of controlling the two-stroke free piston power generation system to generate electricity is:

[0079] The system displacement information of the two-stroke free piston power generation system is detected by a linear motor displacement sensor;

[0080] Determine the system displacement state according to the system displacement information;

[0081] When the system displacement fluctuates, a jet ignition two-stroke free piston engine is introduced to generate electricity to improve the system economy.

[0082] It should be noted that regulating the power generation system by monitoring the system displacement information through the line motor displacement sensor can enable the system to respond instantly when displacement fluctuations are detected, optimize the operation of the jet ignition two-stroke free piston engine, and ensure that the power generation efficiency and engine performance are maintained under changing driving conditions.

[0083] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0084] In the present invention, through the direct connecting rod connection between the linear motor and the jet ignition two-stroke free piston engine, the energy transfer efficiency is high, the energy loss in the traditional crank-connecting rod mechanism is reduced, the reciprocating motion of the linear motor is more efficiently converted into the kinetic energy of the piston, and the overall energy efficiency of the system is improved. By installing a high-efficiency electromagnetic valve between the pre-combustion chamber and the main combustion chamber, abnormal fluctuations and possible damages in the combustion process are reduced, and the reliability and durability of the entire power generation system are enhanced. The state recognition system integrates a variety of sensors and monitoring tools, which can detect and identify the operating status of the engine in real time and dynamically adjust the operating parameters to adapt to different driving conditions and improve the performance, economy and reliability of the motor.

[0085] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0086] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A two-stroke free piston power generation system based on jet ignition, characterized in that: include: Linear motor, connecting rod assembly, jet ignition two-stroke free piston engine and status recognition system; The mover main shaft (1) of the linear motor is connected to the piston (12) of the jet ignition two-stroke free piston engine via the connecting rod assembly; A high-efficiency electromagnetic valve (16) is installed between the main combustion chamber and the pre-combustion chamber (17) of the jet ignition two-stroke free piston engine; The state recognition system recognizes the operating state of the two-stroke free piston power generation system, and issues corresponding instructions to the two-stroke free piston power generation system to control the high-efficiency electromagnetic valve (16) to open or close.

2. The two-stroke free piston power generation system based on jet ignition according to claim 1 is characterized in that: The linear motor comprises a mover main shaft (1), a permanent magnet (2), a linear motor stator (3) and a linear motor housing (4); The linear motor stator (3) is installed inside the motor housing (4), the permanent magnet (2) is arranged on the mover main shaft (1), and the mover main shaft (1) is used to drive the permanent magnet (2) to perform reciprocating linear motion within the range of the linear motor stator (3).

3. The two-stroke free piston power generation system based on jet ignition according to claim 1 is characterized in that: The connecting rod assembly comprises a motor end spring seat (5), a connecting rod (7), a spring (6) and a piston end spring seat (8); The spring (6) is sleeved on the connecting rod (7); The two ends of the connecting rod (7) are respectively connected to the mover main shaft (1) and the piston (12) via bolts.

4. The two-stroke free piston power generation system based on jet ignition according to claim 1 is characterized in that: The jet ignition two-stroke free piston engine comprises a cylinder (11), a piston (12), a main combustion chamber and a pre-combustion chamber (17); The cylinder body (11) is equipped with a fuel injector (9) and a main combustion chamber spark plug (20); A pre-combustion chamber spark plug (18) and a high-efficiency electromagnetic valve (16) are installed in the pre-combustion chamber (17).

5. The two-stroke free piston power generation system based on jet ignition according to claim 1, characterized in that: The high-efficiency electromagnetic valve (16) is installed at the spray hole position of the pre-combustion chamber (17), and according to the feedback parameters of the state recognition system, it is determined whether it is necessary to open the high-efficiency electromagnetic valve (16) to introduce the jet ignition two-stroke free piston engine to improve the combustion process in the cylinder.

6. The two-stroke free piston power generation system based on jet ignition according to claim 1, characterized in that: The state recognition system comprises an in-cylinder pressure sensor (15), a cylinder wall temperature sensor (19), an oxygen sensor (21), an exhaust temperature sensor (22) and a linear motor displacement sensor (26); The in-cylinder pressure sensor (15) is installed in the top area of ​​the main combustion chamber and is used to detect the in-cylinder gas pressure during the main combustion chamber combustion process, so as to determine the current main combustion chamber combustion state of the two-stroke free piston power generation system and feed back the in-cylinder gas pressure to the control system; The cylinder wall temperature sensor (19) is mounted on the outer ring of the cylinder head of the cylinder (11) and is used to detect the cylinder temperature to determine the current cooling state of the jet ignition two-stroke free piston engine and to feed back the cylinder temperature to the control system; The oxygen sensor (21) is installed at the initial end of the exhaust pipe (23) and is used to detect the oxygen concentration in the exhaust gas to determine the air-fuel ratio of the current in-cylinder combustion of the jet ignition two-stroke free piston engine and feed back the oxygen concentration to the control system; The exhaust temperature sensor (22) is installed at the end of the exhaust pipe (23) and is used to detect the exhaust gas temperature to determine whether the emission of the jet ignition two-stroke free piston engine meets the standard, and feed back the exhaust gas temperature to the control system; The linear motor displacement sensor (26) is mounted on the linear motor housing (4) and is used to detect the system displacement to determine the current motion state of the jet ignition two-stroke free piston engine and to feed back the system displacement to the control system.

7. A control method, characterized in that: The two-stroke free piston power generation system based on jet ignition as claimed in any one of claims 1 to 6, the method comprising: S1: Acquire driving conditions, which include urban road driving conditions, highway driving conditions, and mountain road driving conditions. S2: According to the driving condition, the two-stroke free piston power generation system is controlled to generate electricity in different ways to optimize the working process of the two-stroke free piston power generation system.

8. The control method according to claim 7, characterized in that: When the driving condition is the urban road driving condition, the method of controlling the two-stroke free piston power generation system to generate electricity is: Detecting the oxygen concentration in the exhaust gas by means of the oxygen sensor; determining an air-fuel ratio of combustion in the cylinder according to the oxygen concentration; When the air-fuel ratio is lower than a preset air-fuel ratio, the jet ignition two-stroke free piston engine is introduced to generate electricity to increase the air-fuel ratio and avoid output power waste.

9. The control method according to claim 7, characterized in that: When the driving condition is the highway driving condition, the method of controlling the two-stroke free piston power generation system to generate electricity is: Detecting the in-cylinder gas pressure during the main combustion chamber combustion process by means of the in-cylinder pressure sensor; determining the combustion state of the main combustion chamber according to the gas pressure; Determining a system operating state of the two-stroke free piston power generation system according to the combustion state; When the system is in a stable operating state, the jet ignition two-stroke free piston engine is introduced to generate electricity to improve the economy of the system.

10. The control method according to claim 7, characterized in that: When the driving condition is the mountain road driving condition, the method of controlling the two-stroke free piston power generation system to generate electricity is: Detecting system displacement information of the two-stroke free piston power generation system by means of the linear motor displacement sensor; Determining the system displacement state according to the system displacement information; When the system displacement fluctuates, the jet ignition two-stroke free piston engine is introduced to generate electricity to ensure that the system can operate stably.

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