Multi-mode energy management system based on rotary piston engine and control method of multi-mode energy management system

Abstract

The invention provides a multi-mode energy management system based on a rotary piston engine and a control method thereof in order to realize a rotary piston engine energy management system capable of automatically adapting to working conditions, realizing multi-mode cooperative work and facilitating improvement of comprehensive utilization efficiency of energy, and belongs to the technical field of engine control and energy management. The system comprises a motor / generator connected with an engine / gas compressor through a main transmission shaft; the air storage tank is connected with an air inlet and outlet channel of the engine / air compressor. The turbine power generation module is connected with the main transmission shaft through an auxiliary transmission shaft with a clutch; the intelligent controller is in signal connection with the sensors and the executing mechanism and is configured to judge working conditions based on signals of the sensors and output instructions to cooperatively control the engine / gas compressor, the motor / generator, the gas storage module valve and the turbine clutch, so that the system is dynamically switched among multiple working modes, and six working modes are achieved. The invention is suitable for the energy management system based on the rotary piston engine.

Description

Technical Field

[0001] This invention relates to the field of engine control and energy management technology, specifically to a rotary piston engine system and its control method that integrates compressed air energy storage, turbine energy recovery and multi-condition adaptive functions. Background Technology

[0002] Rotary piston engines have attracted considerable attention in specific fields due to their advantages such as high power-to-weight ratio, compact structure, and smooth operation. However, existing rotary piston engines generally suffer from problems such as low part-load efficiency, high pollutant emissions, limited operating modes, and strong dependence on fossil fuels. This restricts their widespread application in the context of energy scarcity and increasingly stringent environmental requirements.

[0003] Despite decades of development, some inherent defects of rotary piston engines have not been fully resolved, hindering their large-scale commercial application. Their fuel economy is generally lower than that of excellent reciprocating engines of equivalent power, primarily due to higher heat loss and incomplete combustion caused by the combustion chamber shape. Emissions are also a significant issue, presenting challenges in meeting increasingly stringent emission regulations. Furthermore, their efficiency drops considerably under partial load conditions, and the long-term reliability of the sealing system remains a technical challenge.

[0004] The industry has made numerous attempts to improve its performance, such as adopting turbocharging, direct injection, or building hybrid power systems. While these technologies have achieved some success, they often fail to systematically solve the problems, facing challenges such as low-speed lag, system complexity, high costs, and insufficient optimization of energy management strategies. Existing solutions still have shortcomings in achieving deep synergy and global optimization among subsystems, particularly in the diversified recovery, storage, and reuse of energy, where there is still room for improvement. Specifically, these limitations include a single mode with limited adaptability, a short energy recovery chain, a lack of intelligent dynamic energy management, and significant performance degradation in special environments such as high altitudes.

[0005] Therefore, an innovative solution is needed to systematically address these technical challenges. This invention proposes a multi-mode energy management system and its control method based on a rotary piston engine. By deeply integrating compressed air energy storage technology, turbine energy recovery technology, and advanced intelligent control strategies, it aims to improve the energy efficiency, environmental friendliness, and adaptability to complex application scenarios of the rotary piston engine. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a rotary piston engine energy management system and its control method that can automatically adapt to working conditions, work in multiple modes in a coordinated manner, and help improve the overall energy utilization efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a multi-mode energy management system based on a rotary piston engine, the multi-mode energy management system comprising: A rotary piston engine / compressor configured to operate selectively as an engine or a compressor; An electric motor / generator, which is connected to a rotary piston engine / compressor via a main drive shaft, is configured to selectively start the rotary piston engine / compressor as an electric motor or be driven by the rotary piston engine / compressor to generate electricity as a generator. An air storage module, comprising an air storage tank and an electrically controlled valve, is connected to the central intake and exhaust passage of a rotary piston engine / compressor via the electrically controlled valve, and is configured to store compressed air or release compressed air to drive the rotary piston engine / compressor; The turbine power generation module, which is connected to the main drive shaft via a secondary drive shaft and a clutch, is configured to recover exhaust gas energy for auxiliary power generation. The intelligent controller is connected to multiple sensors and actuators and is configured to: determine the system operating condition based on the signals input from the sensors, and output control commands to coordinate the control of the rotary piston engine / compressor, electric motor / generator, the electronically controlled valves of the gas storage module and the turbine power generation module, so that the system can dynamically switch between multiple operating modes.

[0008] Furthermore, the aforementioned sensors include at least one of a fuel flow sensor, an air flow sensor, an in-cylinder pressure sensor, an exhaust gas temperature sensor, and an altitude and oxygen concentration sensor. Furthermore, the aforementioned intelligent controller is also configured to: determine the energy level of the exhaust gas based on exhaust gas temperature and pressure data, and control the engagement or disengagement of the clutch of the turbine power generation module accordingly, so as to manage exhaust gas energy recovery. It is also configured to: based on altitude or oxygen concentration sensor data, when a low-oxygen environment is detected, control the gas storage module to release the stored oxygen-enriched air to mix with the intake air, or directly switch to compressed air-driven power generation mode.

[0009] Secondly, the present invention also provides a multi-mode control method based on a multi-mode energy management system for a rotary piston engine, the method being executed by an intelligent controller and comprising the following steps: Operating condition judgment steps: Real-time monitoring of sensor data and external commands of the system, wherein the sensor data includes at least one of fuel supply signal, load demand signal, exhaust gas energy signal, gas tank pressure signal, and altitude oxygen concentration signal; Mode Decision and Triggering Steps: Based on the results of the working condition judgment steps, a decision is made from a variety of predefined working modes and the corresponding working mode is triggered; Coordinated control steps: In the triggered operating mode, generate and output a sequence of control commands to coordinate the actions of the electric motor / generator, rotary piston engine, air tank valve, turbine clutch and injector to execute the energy flow operation of the selected mode.

[0010] Furthermore, the aforementioned multiple operating modes include a fuel-powered power generation mode, specifically: This mode is triggered when sufficient fuel supply is detected and there is a continuous demand for power. Control the electric motor / generator to drive the rotary piston engine to start; After the engine starts successfully, the electric motor / generator is switched to generator mode, and the fuel injector is controlled to inject fuel and ignite, so that the engine enters the combustion and power-generating state to drive the generator. When there is sufficient energy in the exhaust gas, the turbine clutch is engaged, and the turbine power generation module is introduced to recover exhaust gas energy and generate electricity.

[0011] Furthermore, the aforementioned multiple operating modes also include a compressed air energy storage mode, specifically: This mode is triggered when the load demand is detected to be below the threshold or when an energy storage command is received; Control the electric motor / generator to operate as an electric motor, and control the rotary piston engine / compressor to operate as a compressor; Open the air inlet valve of the air tank to store the generated compressed air into the air tank until the predetermined pressure is reached.

[0012] Furthermore, the aforementioned multiple operating modes also include a compressed air-driven power generation mode, specifically: This mode is triggered when no fuel supply is detected but there is still a demand for electricity; Close the oil inlet valve and open the high-pressure vent valve of the air tank; The rotary piston engine / compressor is controlled to operate as a pneumatic motor, driven by the expansion of compressed air, which in turn drives an electric motor / generator to generate electricity.

[0013] Furthermore, the aforementioned multiple operating modes also include a sudden high-load response mode, specifically: This mode is triggered immediately when a sudden increase in load power exceeding a set threshold is detected within milliseconds; While maintaining the original power supply, the high-pressure vent valve of the air tank is opened instantaneously and significantly to release compressed air to provide auxiliary power to match the sudden increase in load; after the load stabilizes, the vent valve is smoothly closed.

[0014] Furthermore, the aforementioned multiple operating modes also include an intelligent exhaust gas energy recovery mode, specifically: Continuously monitor exhaust gas temperature and pressure; Determine the efficiency threshold for turbine intervention based on the pre-stored efficiency MAP. When the exhaust gas energy is sufficient to keep the turbine operating in its high-efficiency range, the turbine clutch is engaged to assist in power generation; otherwise, it is disengaged to avoid power loss.

[0015] Furthermore, the aforementioned multiple working modes also include a high-altitude adaptive mode, specifically: When the system is determined to be in a low-oxygen environment by sensors If there is a slight lack of oxygen, control the valve of the gas tank to release the stored oxygen-enriched air and mix it with the intake air to ensure combustion efficiency. If there is severe oxygen deficiency, the system will switch directly to compressed air-driven power generation mode.

[0016] Compared with the prior art, the multi-mode energy management system and control method based on a rotary piston engine provided by the present invention have the following significant technical effects: (1) Integrated design of rotary piston engine / compressor: The same elliptical rotary engine can be switched between "power output mode" or "air compression mode" through intelligent control. This reduces the size and weight of the system and greatly increases the system's integration and functionality.

[0017] (2) Dual drive shaft dynamic coupling system: The exhaust gas status is effectively detected by electronic control sensors, and the engagement and disengagement of the secondary drive shaft clutch are intelligently controlled by the controller, avoiding turbine back drag loss under low load, ensuring that the energy recovery system only intervenes in the high efficiency range, thereby systematically improving the overall energy utilization efficiency under all working conditions.

[0018] (3) Integration of high-pressure air storage tank with power system: The air storage module is directly connected to the engine intake channel, and the compressed air is "plug and play" through electronically controlled valves. This not only breaks the traditional engine's dependence on fuel and combustion improver, realizing energy diversification, but also provides key energy reserves and solutions for coping with sudden load changes and high-altitude environments.

[0019] (4) Significantly improved multi-condition adaptability: When a sudden load change is detected (such as a 20% increase in power demand), the gas tank can instantly release high-pressure gas to assist the engine in increasing power generation, demonstrating excellent dynamic response performance. Under high-altitude and low-oxygen conditions, by mixing in oxygen-enriched gas or directly using high-pressure gas for driving, the global problem of the drastic performance decline of traditional internal combustion engines in oxygen-deficient environments is perfectly solved, resulting in extremely strong environmental adaptability and reliability.

[0020] (5) Emission reduction and environmental protection, in line with the trend of green development: By optimizing combustion and making full use of energy, the consumption of fossil fuels and the generation of incomplete combustion products are reduced at the source. The compressed air drive mode can achieve true zero-emission operation, with outstanding environmental benefits.

[0021] This invention is applicable to energy management systems based on rotary piston engines. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the multi-mode energy management system based on a rotary piston engine as described in an embodiment of the present invention; Figure 2 This is a flowchart of the fuel-driven power generation mode (conventional mode) described in an embodiment of the present invention; Figure 3 This is a flowchart illustrating the compressed air energy storage mode control process described in this embodiment of the invention. Figure 4 This is a flowchart illustrating the compressed air-driven power generation mode control process described in this embodiment of the invention. Figure 5 This is a flowchart illustrating the sudden high load response mode control in an embodiment of the present invention. Figure 6 This is a flowchart illustrating the intelligent exhaust gas energy recovery mode control process described in this embodiment of the invention. Figure 7 This is a flowchart of the high-altitude adaptive mode control described in an embodiment of the present invention.

[0024] Among them, 1-rotary piston engine / compressor, 2-electric motor / generator, 3-intelligent controller, 4-air tank, 5-turbine generator module, 6-main drive shaft, 7-secondary drive shaft (with clutch), 8-fuel flow sensor, 9-air flow sensor, 10-injector, 11-electronic control valve. Detailed Implementation

[0025] The specific implementation details of "a multi-mode energy management system and control method based on a rotary piston engine" provided in this specification are primarily intended for illustrative purposes rather than limiting definitions, aiming to help those skilled in the art thoroughly understand the principles and implementation of the invention. However, those skilled in the art should understand that these details represent only one feasible embodiment, and the core concept of the invention can be fully realized through other technical means or alternative solutions not described in detail, without departing from its spirit and essence. Furthermore, the omission of details of conventional experimental methods and apparatus known in the art in the specification is to avoid redundant information interfering with the understanding of the innovation points. This does not mean that these known technologies are not required during implementation, and those skilled in the art should be able to supplement and apply them based on their professional knowledge.

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0027] Example 1, Combination Figure 1 This embodiment aims to provide an energy management system for a rotary piston engine that can automatically adapt to operating conditions, work in multiple modes collaboratively, and help improve the overall energy utilization efficiency. The structure of the energy management system is as follows: Figure 1 As shown, it includes: A rotary piston engine / compressor 1, which is configured to operate selectively as an engine or a compressor; The electric motor / generator 2, which is connected to the rotary piston engine / compressor 1 via the main drive shaft 6, is configured to selectively start the rotary piston engine / compressor as an electric motor or be driven by the rotary piston engine / compressor 1 to generate electricity as a generator. The air storage module includes an air storage tank 4 and an electrically controlled valve 11, which is connected to the central intake and exhaust passage of the rotary piston engine / compressor 1 through the electrically controlled valve 11, and is configured to store compressed air or release compressed air to drive the rotary piston engine / compressor 1. The turbine power generation module 5, which is connected to the main drive shaft 6 via a clutch through a secondary drive shaft 7, is configured to recover exhaust gas energy for auxiliary power generation. The intelligent controller 3, whose signals are connected to multiple sensors and actuators, is configured to: determine the system operating condition based on the signals input from the sensors, and output control commands to coordinate the control of the rotary piston engine / compressor 1, the electric motor / generator 2, the electronically controlled valve 11 of the gas storage module, and the turbine power generation module 5, so that the system can dynamically switch between multiple operating modes; the intelligent controller 3 is also configured to: determine the exhaust gas energy level based on exhaust gas temperature and pressure data, and control the clutch engagement or disengagement of the turbine power generation module accordingly to manage exhaust gas energy recovery; it is also configured to: based on altitude or oxygen concentration sensor data, when a low-oxygen environment is detected, control the gas storage module to release stored oxygen-enriched air to mix with the intake air, or directly switch to compressed air-driven power generation mode.

[0028] The aforementioned sensors include at least one of the following: fuel flow sensor 8, air flow sensor 9, cylinder pressure sensor, exhaust gas temperature sensor, altitude and oxygen concentration sensor.

[0029] Furthermore, a multi-mode energy management system based on a rotary piston engine is described in detail. This system consists of the following core modules: (1) Rotary piston engine / compressor 1: This component is the core of the system's power conversion. Structurally, it adopts an elliptical cylinder rotary piston design and innovatively uses a central rotating shaft for intake and exhaust. This design makes it no longer a single-function engine, but can dynamically switch between two roles according to instructions: as an engine, it burns fuel to output power; as a compressor, it can be driven by external power to draw in and compress air.

[0030] (2) Electric motor / generator 2: This component is rigidly connected to the rotary piston engine / compressor 1 via a main drive shaft 6, serving as an "energy hub." It also has a dual function: as an electric motor, it consumes electrical energy to start the engine or drive the engine to operate as a compressor; as a generator, it is driven by the engine or compressed air to convert mechanical energy into electrical energy output.

[0031] (3) Gas storage module: This module is crucial for energy storage and reuse, and mainly consists of a high-pressure air tank 4 and electrically controlled valves 11. These valves precisely control the connection between the air tank 4 and the central intake and exhaust channels of the rotary piston engine / compressor 1. Its functions include: during the energy storage phase, storing compressed air generated by the engine as a compressor; and during the energy release phase, releasing the high-pressure air to drive the engine as a pneumatic motor.

[0032] (4) Turbine power generation module 5: To recover residual energy from the exhaust gas, the system includes a turbine power generation module 5. This module is connected to the main drive shaft 6 via a drive shaft 7 and a clutch. This design achieves power coupling and decoupling: when the exhaust gas energy is sufficient, the clutch engages, and the turbine is driven by the exhaust gas to assist in power generation; when the exhaust gas energy is insufficient, the clutch disengages to prevent the turbine from becoming a load and causing power loss. (5) Intelligent Controller 3: The intelligent controller 3 is the "brain" and command center of the entire system. Its specific functions include: Signal input: The controller continuously receives various information from the air flow sensor, fuel flow sensor, pressure and temperature sensor, altitude / oxygen concentration sensor, and external power demand signal.

[0033] Control output: Based on the comprehensive analysis and judgment of this information, the controller sends precise commands to actuators such as the motor / generator 2, the electronically controlled valve 11, the fuel injector, and the clutch.

[0034] The intelligence of the controller is reflected in its advanced decision-making functions: Mode switching and coordinated control: The controller can make decisions and trigger the system to dynamically switch between multiple working modes (such as fuel-driven power generation, compressed air energy storage, compressed air-driven power generation, etc.) based on real-time operating conditions, and coordinate the orderly operation of each component.

[0035] Intelligent exhaust energy management: The controller has a built-in algorithm that analyzes exhaust temperature and pressure data to determine the exhaust energy level. Only when the exhaust energy is sufficient to allow the turbine to operate in its efficient range will the clutch be engaged for energy recovery; otherwise, it will disengage, thereby maximizing energy efficiency.

[0036] High-altitude adaptive operation: When a low-oxygen environment caused by high altitude is detected, the controller can activate an adaptive strategy. In the case of mild hypoxia, the controller controls the gas storage module to mix in stored oxygen-enriched air to ensure combustion; in the case of severe hypoxia, it directly switches to a zero-emission compressed air-driven power generation mode, ensuring the reliability of the system in special environments.

[0037] In summary, the multi-mode energy management system based on a rotary piston engine proposed in this embodiment integrates the rotary piston engine and compressor, allowing the same elliptical rotary engine to switch between "power output mode" and "air compression mode" through intelligent control. This reduces the system's size and weight, significantly increasing its integration and functionality. A dual-driveshaft dynamic coupling system is also designed: electronic sensors effectively detect the exhaust gas status, and the controller intelligently controls the engagement and disengagement of the secondary driveshaft clutch, avoiding turbine back-dragging losses at low loads and ensuring that the energy recovery system only intervenes in the high-efficiency range, thereby systematically improving the overall energy utilization efficiency under all operating conditions. Furthermore, a high-pressure air tank is integrated with the power system: the air storage module is directly connected to the engine intake channel, enabling "plug-and-play" compressed air supply via electronically controlled valve 11. This not only breaks the traditional engine's dependence on fuel and combustion improvers, achieving energy diversification, but also provides crucial energy reserves and solutions for coping with sudden load changes and high-altitude environments. Furthermore, the design significantly enhances multi-condition adaptability: when a sudden load change is detected, such as a 20% increase in power demand, the air tank can instantly release high-pressure gas to assist the engine in increasing power generation, demonstrating excellent dynamic response performance. Under high-altitude, low-oxygen conditions, by mixing in oxygen-enriched gas or directly using high-pressure gas for propulsion, it perfectly solves the global problem of the drastic performance decline of traditional internal combustion engines in oxygen-deficient environments, exhibiting extremely strong environmental adaptability and reliability. Therefore, the multi-mode energy management system based on a rotary piston engine proposed in this embodiment reduces fossil fuel consumption and the generation of incomplete combustion products at the source by optimizing combustion and full utilization of energy. The compressed air drive mode achieves true zero-emission operation, demonstrating significant environmental benefits, achieving emission reduction and environmental protection, and aligning with the trend of green development.

[0038] Example 2, Combination Figures 1 to 7 This embodiment describes a control method for a multi-mode energy management system based on a rotary piston engine, as described in Embodiment 1 above. The method is executed by an intelligent controller and includes the following steps: Operating condition judgment steps: Real-time monitoring of sensor data and external commands of the system, wherein the sensor data includes at least one of fuel supply signal, load demand signal, exhaust gas energy signal, gas tank pressure signal, and altitude oxygen concentration signal; Mode Decision and Triggering Steps: Based on the results of the working condition judgment steps, a decision is made from a variety of predefined working modes and the corresponding working mode is triggered; Coordinated control steps: In the triggered operating mode, generate and output a sequence of control commands to coordinate the actions of the electric motor / generator, rotary piston engine, air tank valve, turbine clutch and injector to execute the energy flow operation of the selected mode.

[0039] The control method described in this embodiment monitors the system status and external demands in real time, intelligently judges and automatically switches between multiple efficient operating modes to achieve optimal energy allocation and utilization. Specifically: when sufficient fuel supply is detected and there is a continuous demand for power or power generation, the system preferentially enters the fuel-driven power generation mode (normal mode). In this mode, the intelligent controller controls the electric motor / generator as a starter to drive the rotary piston engine to start, and then converts it to generator mode. The engine burns fuel to generate power to drive the main generator to generate electricity. At the same time, high-temperature exhaust gas is guided to the turbine through an electronically controlled four-way valve. The turbine assists in power generation through the engaged auxiliary drive shaft, achieving preliminary energy recovery. When the system has surplus power or receives a specific energy storage command, it switches to the compressed air energy storage mode. The intelligent controller commands the electric motor / generator to switch to electric motor mode, driving the rotary piston engine to work as a compressor, drawing in and compressing air, and storing the high-pressure air in the air tank, completing the conversion of mechanical energy into pressure potential energy. In scenarios where there is no fuel supply but still a demand for electricity, the system activates the compressed air-driven power generation mode. The intelligent controller opens the valve between the air tank and the engine cylinder to release high-pressure air. The air expands and drives the engine to rotate, making it work as a pneumatic motor, which in turn drives the main generator to generate electricity, ensuring a continuous energy supply.

[0040] To address sudden increases in load power demand, the system features a high-load surge response mode. When the intelligent controller detects that the power demand exceeds a set threshold, it immediately opens the air tank vent valve, allowing high-pressure air to rapidly enter the engine, providing additional instantaneous power and assisting the engine in quickly increasing its output power. This effectively meets sudden load changes and ensures system stability. Regarding energy recovery, the system employs a dual-mode exhaust gas recovery system based on different loads. The controller uses exhaust gas temperature and pressure sensor data to determine the efficiency range of the turbine recovery system in real time. Under high loads and with sufficient exhaust gas energy, the clutch engages to engage the turbine and assist in power generation. Under low loads and with low exhaust gas energy, the clutch disengages to prevent turbine back-dragging and power loss, ensuring the energy recovery system always operates within its efficient range.

[0041] Furthermore, the system is particularly capable of adapting to the hypoxic conditions of high-altitude regions. The intelligent controller, after determining that the system is in a high-altitude, low-oxygen environment via air pressure or oxygen concentration sensors, will adopt differentiated strategies based on the degree of hypoxia: in cases of mild hypoxia, pre-stored oxygen-enriched air from the storage tank will be mixed into the intake channel in a specific ratio to increase the intake oxygen concentration and ensure normal fuel combustion efficiency; in cases of severe hypoxia where ambient oxygen is insufficient to support effective combustion, the system will directly switch to compressed air-driven power generation mode, utilizing stored high-pressure air as the power source, completely eliminating dependence on ambient oxygen and significantly expanding the system's application range and environmental adaptability.

[0042] Through the aforementioned intelligent coordination and seamless switching of multiple modes, the system achieves refined management and maximized utilization of the rotary piston engine's energy, realizing six operating modes. The core of these six modes lies in the fact that the intelligent controller 3, based on input signals from various sensors, manages the coordinated operation of the entire system in each mode through preset control algorithms and strategies. The six operating modes include: fuel-driven power generation mode (normal mode), compressed air energy storage mode, compressed air-driven power generation mode, sudden high load response mode, intelligent exhaust gas energy recovery mode, and high-altitude adaptive mode.

[0043] The following is combined Figures 1 to 7 Further explanation of the six working modes; Oil-fired power generation mode (conventional mode) includes: This mode is triggered when sufficient fuel supply is detected and there is a continuous demand for power. Control the electric motor / generator to drive the rotary piston engine to start; After the engine starts successfully, the electric motor / generator is switched to generator mode, and the fuel injector is controlled to inject fuel and ignite, so that the engine enters the combustion and power-generating state to drive the generator. When there is sufficient energy in the exhaust gas, the turbine clutch is engaged, and the turbine power generation module is introduced to recover exhaust gas energy and generate electricity.

[0044] In actual operation, such as Figure 1 and Figure 2 As shown, the operating condition judgment and triggering are as follows: When the fuel flow sensor 8 detects that the fuel supply is sufficient and the intelligent controller 3 receives a signal of continuous power or power generation demand from the external load, the system enters this mode.

[0045] Operation and Control Flow: The intelligent controller 3 first switches the electric motor / generator 2 to electric motor mode, driving the rotary piston engine / compressor 1 to start via the main drive shaft 6. After successful engine start-up, the intelligent controller 3 switches the electric motor / generator 2 back to generator mode by changing circuit parameters. Subsequently, the intelligent controller 3 controls the fuel injector 10 to inject fuel and ignite it, and the engine enters normal combustion and power generation state, driving the main generator to generate electricity. Simultaneously, based on data from the exhaust gas temperature / pressure sensor, the intelligent controller 3 determines that the exhaust gas energy is sufficient, and then controls the clutch on the auxiliary drive shaft 7 to engage, causing the turbine to be driven by the exhaust gas and assisting in power generation through the auxiliary drive shaft 7. Through closed-loop control, the intelligent controller 3 adjusts the intake air volume and fuel injection volume in real time, ensuring the system operates stably within its optimal efficiency range.

[0046] Compressed air energy storage modes include: This mode is triggered when the load demand is detected to be below the threshold or when an energy storage command is received; Control the electric motor / generator to operate as an electric motor, and control the rotary piston engine / compressor to operate as a compressor; Open the air inlet valve of the air tank to store the generated compressed air into the air tank until the predetermined pressure is reached.

[0047] In actual operation, such as Figure 1 and Figure 3 As shown, operating condition judgment and triggering: When the intelligent controller 3 judges that the current load is less than 25%, there is surplus power such as the power generation is much higher than the demand, or when it receives an external energy storage command, this mode is triggered.

[0048] Operation and Control Flow: The intelligent controller 3 instructs the electric motor / generator 2 to switch to electric motor mode. Simultaneously, it adjusts the timing of the engine's intake and exhaust valves or ports to make it operate as a compressor. The electric motor drives the engine to rotate via the main drive shaft 6, drawing in and compressing air. The intelligent controller 3 opens the intake valve connected to the air tank 4, storing the generated high-pressure air in the air tank 4 through a pipeline. The intelligent controller 3 monitors the pressure in the air tank 4; once the predetermined pressure is reached, it closes the valve and exits this mode.

[0049] Compressed air-driven power generation modes include: This mode is triggered when no fuel supply is detected but there is still a demand for electricity; Close the oil inlet valve and open the high-pressure vent valve of the air tank; The rotary piston engine / compressor is controlled to operate as a pneumatic motor, driven by the expansion of compressed air, which in turn drives an electric motor / generator to generate electricity.

[0050] In actual operation, such as Figure 1 and Figure 4 As shown, the operating condition judgment and triggering are as follows: When the fuel flow sensor detects no fuel supply, but the intelligent controller 3 still receives the power demand signal, the system automatically switches to this mode.

[0051] Operation and Control Flow: The intelligent controller 3 closes the fuel inlet valve, stopping fuel injection. Simultaneously, it opens the high-pressure vent valve connecting the air tank 4 to the engine block. The stored compressed air expands instantaneously, driving the engine piston to rotate, making it function as a pneumatic motor. The engine drives the electric motor / generator 2 via the main drive shaft 6 to generate electricity. The intelligent controller 3 controls the air pressure and output power by adjusting the opening of the vent valve.

[0052] Sudden high load response modes include: This mode is triggered immediately when a sudden increase in load power exceeding a set threshold is detected within milliseconds; While maintaining the original power supply, the high-pressure vent valve of the air tank is opened instantaneously and significantly to release compressed air to provide auxiliary power to match the sudden increase in load; after the load stabilizes, the vent valve is smoothly closed.

[0053] In actual operation, such as Figure 1 and Figure 5 As shown, the operating condition judgment and triggering: The intelligent controller 3 monitors the power output and demand in real time. When it detects a sudden surge in load power demand, such as an increase in demand exceeding 20% ​​of the rated value within milliseconds, this mode is immediately triggered.

[0054] Operation and Control Process: While maintaining the current fuel supply, the intelligent controller 3 immediately and significantly opens the high-pressure vent valve of the air tank 4. A large amount of high-pressure air rushes into the engine block, providing additional instantaneous torque and power, assisting the engine to quickly increase its speed and output power to match the sudden increase in load demand and prevent system frequency fluctuations or shutdown. After the load stabilizes, the intelligent controller 3 gradually closes the vent valve, smoothly exiting this mode.

[0055] Intelligent exhaust energy recovery modes include: Continuously monitor exhaust gas temperature and pressure; Determine the efficiency threshold for turbine intervention based on the pre-stored efficiency MAP. When the exhaust gas energy is sufficient to keep the turbine operating in its high-efficiency range, the turbine clutch is engaged to assist in power generation; otherwise, it is disengaged to avoid power loss.

[0056] In actual operation, such as Figure 1 and Figure 6 As shown, operating condition judgment and triggering: The intelligent controller 3 continuously receives data from the exhaust gas temperature sensor and pressure sensor located in front of the turbine.

[0057] Operation and Control Flow: The intelligent controller 3 has a built-in efficiency MAP. When it determines that the current exhaust gas energy is sufficient to keep the turbine operating in its high-efficiency range, such as under high load conditions, it outputs a command to engage the clutch of the auxiliary drive shaft 7, causing the turbine to engage and assist in power generation. Under low load conditions, when the exhaust gas temperature and pressure are low and the turbine efficiency is low, the intelligent controller 3 disengages the clutch of the auxiliary drive shaft 7 to prevent the turbine from dragging the main drive system and causing power loss.

[0058] High-altitude adaptive modes include: When the system is determined to be in a low-oxygen environment by sensors If there is a slight lack of oxygen, control the valve of the gas tank to release the stored oxygen-enriched air and mix it with the intake air to ensure combustion efficiency. If there is severe oxygen deficiency, the system will switch directly to compressed air-driven power generation mode.

[0059] In actual operation, such as Figure 1 and Figure 7 As shown, the working condition judgment and triggering: the intelligent controller 3 judges that the system is in a high-altitude low-oxygen environment by using the air pressure sensor or oxygen concentration sensor.

[0060] Operation execution and control process: Mild hypoxia with an excess air coefficient less than 1 and greater than 0.3: The intelligent controller 3 controls the valve of the air tank 4 to mix the oxygen-enriched air stored at low altitude in advance into the air intake channel according to the calculated ratio, thereby increasing the oxygen concentration in the intake air and ensuring the normal combustion efficiency of the fuel.

[0061] Severe oxygen deficiency with excess air coefficient less than 0.3: When the intelligent controller 3 determines that the oxygen in the environment can no longer support effective combustion, it directly switches to compressed air-driven power generation mode.

[0062] In the above description, it should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0063] The above description of the technical solution provided by the present invention through several specific embodiments is intended to highlight the advantages and benefits of the technical solution provided by the present invention. However, the above-described specific embodiments are not intended to limit the present invention. Any reasonable modifications and improvements to the present invention, reasonable combinations of implementation methods and equivalent substitutions based on the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-mode energy management system based on a rotary piston engine, characterized in that, include: A rotary piston engine / compressor (1) is configured to operate selectively as an engine or a compressor; An electric motor / generator (2), which is connected to a rotary piston engine / compressor (1) via a main drive shaft (6), is configured to selectively start the rotary piston engine / compressor (1) as an electric motor or be driven by the rotary piston engine / compressor (1) to generate electricity as a generator. The gas storage module includes a gas storage tank (4) and an electrically controlled valve (11), which is connected to the central intake and exhaust passage of the rotary piston engine / compressor (1) through the electrically controlled valve (11), and is configured to store compressed air or release compressed air to drive the rotary piston engine / compressor (1). The turbine power generation module (5), which is connected to the main drive shaft (6) via a clutch through a secondary drive shaft (7), is configured to recover exhaust gas energy for auxiliary power generation; The intelligent controller (3) is connected to multiple sensors and actuators and is configured to: determine the system operating condition based on the signals input by the sensors, and output control commands to coordinate the control of the rotary piston engine / compressor (1), the electric motor / generator (2), the electrically controlled valve (11) of the gas storage module and the turbine power generation module (5), so that the system can dynamically switch between multiple working modes.

2. The multi-mode energy management system based on a rotary piston engine according to claim 1, characterized in that, The sensors include at least one of the following: fuel flow sensor (8), air flow sensor (9), cylinder pressure sensor, exhaust gas temperature sensor, altitude and oxygen concentration sensor.

3. A multi-mode energy management system based on a rotary piston engine according to claim 2, characterized in that, The intelligent controller (3) is also configured to: determine the energy level of the exhaust gas based on the exhaust gas temperature and pressure data, and control the clutch of the turbine power generation module to engage or disengage accordingly, so as to manage the exhaust gas energy recovery. It is also configured to: based on altitude or oxygen concentration sensor data, when a low-oxygen environment is detected, control the gas storage module to release the stored oxygen-enriched air to mix with the intake air, or directly switch to compressed air-driven power generation mode.

4. A multi-mode control method based on a multi-mode energy management system for a rotary piston engine according to any one of claims 1-3, characterized in that, The method is executed by an intelligent controller and includes the following steps: Operating condition judgment steps: Real-time monitoring of sensor data and external commands of the system, wherein the sensor data includes at least one of fuel supply signal, load demand signal, exhaust gas energy signal, gas tank pressure signal, and altitude oxygen concentration signal; Mode Decision and Triggering Steps: Based on the results of the working condition judgment steps, a decision is made from a variety of predefined working modes and the corresponding working mode is triggered; Coordinated control steps: In the triggered operating mode, generate and output a sequence of control commands to coordinate the actions of the electric motor / generator, rotary piston engine / compressor, air tank valve, turbine clutch and injector to execute the energy flow operation of the selected mode.

5. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, Multiple operating modes include fuel-powered power generation mode, specifically: This mode is triggered when sufficient fuel supply is detected and there is a continuous demand for power. Control the electric motor / generator to drive the rotary piston engine to start; After the engine starts successfully, the electric motor / generator is switched to generator mode, and the fuel injector is controlled to inject fuel and ignite, so that the engine enters the combustion and power-generating state to drive the generator. When there is sufficient energy in the exhaust gas, the turbine clutch is engaged, and the turbine power generation module is introduced to recover exhaust gas energy and generate electricity.

6. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, Multiple operating modes also include a compressed air energy storage mode, specifically: This mode is triggered when the load demand is detected to be below the threshold or when an energy storage command is received; Control the electric motor / generator to operate as an electric motor, and control the rotary piston engine / compressor to operate as a compressor; Open the air inlet valve of the air tank to store the generated compressed air into the air tank until the predetermined pressure is reached.

7. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, Multiple operating modes also include a compressed air-driven power generation mode, specifically: This mode is triggered when no fuel supply is detected but there is still a demand for electricity; Close the oil inlet valve and open the high-pressure vent valve of the air tank; The rotary piston engine / compressor is controlled to operate as a pneumatic motor, driven by the expansion of compressed air, which in turn drives an electric motor / generator to generate electricity.

8. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, The multiple operating modes also include a sudden high load response mode, specifically: This mode is triggered immediately when a sudden increase in load power exceeding a set threshold is detected within milliseconds; While maintaining the original power supply, the high-pressure vent valve of the air tank is opened instantaneously and significantly to release compressed air to provide auxiliary power to match the sudden increase in load; after the load stabilizes, the vent valve is smoothly closed.

9. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, Multiple operating modes also include an intelligent exhaust gas energy recovery mode, specifically: Continuously monitor exhaust gas temperature and pressure; Determine the efficiency threshold for turbine intervention based on the pre-stored efficiency MAP. When the exhaust gas energy is sufficient to keep the turbine operating in its high-efficiency range, the turbine clutch is engaged to assist in power generation; otherwise, it is disengaged to avoid power loss.

10. The control method for a multi-mode energy management system based on a rotary piston engine according to claim 4, characterized in that, Multiple operating modes also include a high-altitude adaptive mode, specifically: When the system is determined to be in a low-oxygen environment by sensors If there is a slight lack of oxygen, control the valve of the gas tank to release the stored oxygen-enriched air and mix it with the intake air to ensure combustion efficiency. If there is severe oxygen deficiency, the system will switch directly to compressed air-driven power generation mode.

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