Redundant engine air supply system

Abstract

The present application provides an engine redundant air supply system, which includes: a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device and a controller, wherein the controller is configured to: control the smoke density test device to detect the smoke density of the exhaust gas output by the engine, and when at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, control the first pressure sensor to detect the pressure of the first connecting pipeline; when the first pressure value is greater than the first pressure threshold, control the gas compression device to start to supply air to the engine; control the second pressure sensor to detect the pressure in the input pipeline; and when the second pressure value is less than or equal to the second pressure threshold, control the blower device to start to supply air to the engine. This system solves the problem in the prior art that different air supply methods are required under different load conditions.

Description

Technical Field

[0001] The present application relates to the field of engines, and in particular to an engine redundant air supply system and a vehicle. Background Art

[0002] Large ship engines frequently require throttling and re-throttling when docking or loading and unloading cargo in operational areas, sometimes also experiencing sudden load increases. During these conditions, the engine's supercharger cannot provide sufficient air for combustion, resulting in the emission of black smoke. Therefore, engine design often incorporates air supply measures. Several methods exist, with high-pressure and blower air supply being the most common. However, existing technologies fail to meet the diverse requirements for different air supply methods under varying load conditions.

[0003] Therefore, there is an urgent need for an air supply device that can solve the problem in the prior art that different air supply methods are required under different load conditions. Summary of the Invention

[0004] The main purpose of the present application is to provide an engine redundant air supply system and a vehicle, so as to at least solve the problem in the prior art that different air supply methods are required under different load conditions.

[0005] According to one aspect of the present application, there is provided an air supply system, comprising a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, an air blower, a smoke density test device and a controller, wherein the engine has an input pipeline and an output pipeline, the gas compression device is connected to the input pipeline through a first connecting pipeline, the first pressure sensor is arranged at one end of the first connecting pipeline close to the gas compression device, the second pressure sensor is arranged in the input pipeline, the air blower is connected to the input pipeline through a second connecting pipeline, the third pressure sensor is arranged at one end of the second connecting pipeline close to the air blower, the smoke density test device is connected to the engine through the output pipeline, and the controller is used to execute: controlling the smoke density test device to detect the output of the engine The smoke density of the exhaust gas is obtained, a smoke density value is obtained, the smoke density value and the load growth rate of the engine are received; it is determined whether at least one of the smoke density value and the load growth rate of the engine is greater than a corresponding air supply threshold value, and when at least one of the smoke density value and the load growth rate of the engine is greater than the corresponding air supply threshold value, the first pressure sensor is controlled to detect the pressure of the first connecting pipeline to obtain a first pressure value, and it is determined whether the first pressure value is greater than a first pressure threshold value; when the first pressure value is greater than the first pressure threshold value, the gas compression device is controlled to be turned on to supply air to the engine; the second pressure sensor is controlled to detect the pressure in the input pipeline to obtain a second pressure value; when the second pressure value is less than or equal to the second pressure threshold value, the blower device is controlled to be turned on to supply air to the engine.

[0006] Optionally, the air supply system also includes a first valve, which is arranged on the first connecting pipeline between the gas compression device and the engine, and controls the gas compression device to open to supply air to the engine, including: controlling the first valve to open so that the gas compression device can open to supply air to the engine.

[0007] Optionally, the air supply system also includes a second valve, which is arranged on the second connecting pipeline between the blowing device and the third pressure sensor, and controls the blowing device to open to supply air to the engine, including: controlling the second valve to open so that the blowing device can supply air to the engine.

[0008] Optionally, the air supply system also includes a third valve, the gas compression equipment includes an air compressor and an air storage equipment, the air storage equipment is directly connected to the first connecting pipeline, and the third valve is arranged on the third connecting pipeline between the air compressor and the air storage equipment. The controller is also used to execute: when the first pressure value is less than or equal to the first pressure threshold, control the third valve to open so that the air compressor can supply air to the air storage equipment; control the first pressure sensor to detect the first connecting pipeline after air supply to obtain a third pressure value; determine whether the third pressure value is greater than the third pressure threshold, and when the third pressure value is greater than the third pressure threshold, control the third valve to close so that the air compressor can stop supplying air to the air storage equipment.

[0009] Optionally, the air supply system also includes a fourth valve, which is arranged on the second connecting pipeline between the engine and the third pressure sensor. The controller is also used to execute: when the second pressure value is greater than a fourth pressure threshold, control the fourth valve to operate to prevent the gas in the input pipeline from flowing back into the second connecting pipeline.

[0010] Optionally, the controller is further configured to: when the second fourth pressure value is greater than the second pressure threshold, control the blowing device not to start.

[0011] Optionally, the air supply system also includes a boosting device, which is arranged between the smoke test device and the engine, and is connected to the inlet of the input pipeline through a third connecting pipeline. The controller is also used to execute: when the exhaust volume of the engine increases, control the speed of the boosting device to increase.

[0012] Optionally, after controlling the blower device to turn on to replenish air to the engine, the controller is also used to execute: controlling the third pressure sensor to detect the pressure in the second connecting pipe to obtain a fourth pressure value; determining whether the fourth pressure value is greater than a fifth pressure threshold, and when the fourth pressure value is less than or equal to the fifth pressure threshold, determining that the blower device is faulty and outputting a fault signal.

[0013] Optionally, the controller is further configured to: control the gas compression device and the air blowing device to not be turned on when one of the smoke value and the engine load growth rate is less than or equal to a corresponding air supply threshold.

[0014] According to another aspect of the present application, a vehicle is provided, comprising any one of the aforementioned air supplement systems.

[0015] Applying the technical solution of the present application, an engine redundant air supply system is provided, which includes a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device and a controller, wherein the controller is used to perform the following operations: controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, receiving the smoke density value and the load growth rate of the engine; determining whether at least one of the smoke density value and the load growth rate of the engine is greater than a corresponding air supply threshold, and when at least one of the smoke density value and the load growth rate of the engine is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than the first pressure threshold; when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply air to the engine; controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value; and when the second pressure value is less than or equal to the second pressure threshold, controlling the blower device to start to supply air to the engine. The air supply system connects the gas compression equipment and the blowing equipment to the engine's input pipeline respectively, and determines the real-time air supply working conditions and the actual service life of parts through the first pressure sensor, the second pressure sensor and the third pressure sensor. Combining the advantages and disadvantages of two different air supply methods, two different air supply methods are adopted under different conditions, which solves the problem in the existing technology that different air supply methods are required under different load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0017] Figure 1 A structural block diagram of a gas supplementation system provided according to an embodiment of the present application is shown;

[0018] Figure 2 A flow chart of a method executed by a controller according to an embodiment of the present application is shown;

[0019] Figure 3 shows a structural block diagram of another gas supplement system provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a process for replenishing gas using a gas compression device according to an embodiment of the present application is shown;

[0021] Figure 5 shows a structural block diagram of another gas supplement system provided in an embodiment of the present application;

[0022] Figure 6A specific flow chart of the method executed by the controller provided in an embodiment of the present application is shown.

[0023] The above drawings include the following reference numerals:

[0024] 110. Gas compression equipment; 112. Blowing equipment; 114. Engine; 116. First pressure sensor; 118. Second pressure sensor; 120. Third pressure sensor; 122. First connecting pipeline; 124. Input pipeline; 126. Second connecting pipeline; 128. Output pipeline; 130. Smoke test equipment; 132. Controller; 134. First valve; 136. Second valve; 138. Third valve; 140. Air compressor; 142. Air storage equipment; 144. Third connecting pipeline; 146. Fourth valve; 148. Pressurization equipment. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] As introduced in the background technology, the existing technology has the problem of insufficient air supply from a single air source for an engine. To solve the above problem, the embodiments of the present application provide an air supply system and a vehicle.

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] In this embodiment, a redundant air supply system for an engine is provided. Figure 1 As shown, it includes a gas compression device 110, a first pressure sensor 116, a second pressure sensor 118, a third pressure sensor 120, an engine 114, a blower device 112, a smoke density test device 130 and a controller 132, wherein the above-mentioned engine 114 has an input pipeline 124 and an output pipeline 128, the above-mentioned gas compression device 110 is connected to the above-mentioned input pipeline 124 through the first connecting pipeline 122, the above-mentioned first pressure sensor 116 is arranged at one end of the above-mentioned first connecting pipeline 122 close to the above-mentioned gas compression device 110, the above-mentioned second pressure sensor 118 is arranged in the above-mentioned input pipeline 124, the above-mentioned blower device 112 is connected to the above-mentioned input pipeline 124 through the second connecting pipeline 126, the above-mentioned third pressure sensor 120 is arranged at one end of the above-mentioned second connecting pipeline 126 close to the above-mentioned blower device 112, and the above-mentioned smoke density test device 130 is connected to the above-mentioned engine 114 through the above-mentioned output pipeline 128.

[0031] Specifically, the gas compression equipment described above can provide high-pressure air supply, while the air blowing equipment described above can provide air supply via a blower. These two methods have different advantages and disadvantages. High-pressure air supply involves injecting high-pressure air directly into the intake manifold to assist combustion. The exhaust gases generated by combustion drive the supercharger turbine, thereby increasing the supercharger's speed. This air supply method typically draws air from an onboard air bottle, which also serves as the engine's starter motor for starting the engine. The advantage of this air supply method is its high pressure, typically 30 bar, which is not limited by the prevailing pressure in the engine intake manifold. However, its disadvantage is that it is limited by the air bottle's volume, limiting the number of air supply cycles. Electric blower air supply involves placing an electric blower at the end of the intake manifold. When powered, the rotor rotates, blowing cabin air into the intake manifold. The advantage is that the air supply volume is unlimited; however, the air supply can be unlimited. The disadvantage is that the air supply pressure is low. If the intake manifold pressure is high during air supply, this can cause backflow and damage the blower. Therefore, a check valve is typically installed after the blower. The first pressure sensor, the second pressure sensor and the third pressure sensor may be strain gauge pressure sensors, piezoresistive pressure sensors, capacitive pressure sensors or piezoelectric pressure sensors.

[0032] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0033] Figure 2 Flowchart of the controller execution method according to the embodiment of the present application. Figure 2As shown, the method includes the following steps:

[0034] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0035] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0036] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0037] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0038] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0039] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0040] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0041] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0042] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0043] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0044] Through this embodiment, an air supply system is provided, which includes a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device and a controller, wherein the controller is used to perform the following operations: controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, receiving the smoke density value and the load growth rate of the engine; determining whether at least one of the smoke density value and the load growth rate of the engine is greater than a corresponding air supply threshold, and when at least one of the smoke density value and the load growth rate of the engine is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than the first pressure threshold; when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply air to the engine; controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value; and when the second pressure value is less than or equal to the second pressure threshold, controlling the blower device to start to supply air to the engine. The air supply system connects the gas compression equipment and the blowing equipment to the engine's input pipeline respectively, and determines the real-time air supply working conditions and the actual service life of parts through the first pressure sensor, the second pressure sensor and the third pressure sensor. Combining the advantages and disadvantages of two different air supply methods, two different air supply methods are adopted under different conditions, which solves the problem in the existing technology that different air supply methods are required under different load conditions.

[0045] In the specific implementation process, Figure 3As shown, the air supply system further includes a first valve 134, which is disposed on the first connecting pipe 122 between the gas compression device 110 and the engine 114. Step S204 can be achieved by controlling the first valve to open, thereby enabling the gas compression device to supply air to the engine. By configuring the first valve, the system can rapidly control the gas compression device to supply air.

[0046] Specifically, the first valve may be a solenoid valve, which is used to control the gas compression device to replenish gas.

[0047] In order to further improve the air supply efficiency of the above-mentioned air blowing equipment, Figure 3 As shown, the above-mentioned air supply system also includes a second valve 136, and the above-mentioned second valve 136 is arranged on the above-mentioned second connecting pipe 126 between the above-mentioned blowing device 112 and the above-mentioned third pressure sensor 120. The above-mentioned step S205 of the present application can be achieved by the following steps: controlling the above-mentioned second valve to open so that the above-mentioned blowing device can supply air to the above-mentioned engine.

[0048] Specifically, the second valve may be a stop valve. Since the outlet pressure of the electric blower is relatively low, it may be used to replenish air when the ship engine is under low load (the engine and gearbox are in parallel or the load is less than 25%).

[0049] like Figure 3 As shown, the air supply system further includes a third valve 138. The gas compression device 110 includes an air compressor 140 and an air storage device 142. The air storage device 142 is directly connected to the first connecting pipeline 122. The third valve 138 is disposed on the third connecting pipeline 144 between the air compressor 140 and the air storage device 142. The controller 132 is further configured to execute the following steps: Step S206: When the first pressure value is less than or equal to the first pressure threshold, controlling the third valve to open so that the air compressor supplies air to the air storage device; Step S207: Controlling the first pressure sensor to detect the first connecting pipeline after air supply to obtain a third pressure value; Step S208: Determining whether the third pressure value is greater than the third pressure threshold. When the third pressure value is greater than the third pressure threshold, controlling the third valve to close so that the air compressor stops supplying air to the air storage device. The gas compression device in this system is composed of the air compressor, the air storage device, and the third valve, which can further improve the air supply efficiency of the gas compression device.

[0050] Specifically, the air compressor compresses the air and stores it in the above-mentioned air storage device. The above-mentioned air storage device can be a high-pressure air cylinder. When fully charged, the pressure is generally 30 bar. The high-pressure air cylinder is used for both engine starting and emergency stopping. Therefore, the high-pressure air cylinder can be set to a minimum pressure, generally around 16 bar, to prevent the air cylinder pressure from being used up and the engine from being unable to stop in an emergency, causing a safety accident. In fact, the above-mentioned first pressure threshold is the minimum pressure threshold of the above-mentioned air storage device. Figure 4 As shown, first, determine whether the pressure value of the high-pressure air bottle is lower than the set minimum pressure value P0. If this condition is met, the air compressor is turned on to inflate the high-pressure air bottle, and determine whether the pressure of the high-pressure air bottle reaches the allowable maximum pressure value, that is, the above-mentioned third pressure threshold. If the above conditions are not met, continue to turn on the air compressor to inflate the high-pressure air bottle until the above conditions are met, and then control the air compressor to shut down.

[0051] In some embodiments, the air supply system further includes a fourth valve 146 disposed on the second connecting line 126 between the engine 114 and the third pressure sensor 120. The controller 132 is further configured to execute step S209: when the second pressure value is greater than a fourth pressure threshold, controlling the fourth valve to prevent gas from the input line from flowing back into the second connecting line. The addition of the fourth valve to the system can prevent airflow from flowing back into the blower equipment, further protecting the blower equipment.

[0052] Specifically, the above-mentioned fourth valve can be a one-way valve. When the engine is under high load, the second pressure value of the input pipeline is higher than the pressure when the electric blower is started, that is, the above-mentioned second pressure threshold. The above-mentioned one-way valve can prevent the airflow from flowing back into the blower, causing damage to the blower impeller.

[0053] In some other embodiments, the controller is further configured to perform step S210 of controlling the blower to not turn on if the second pressure value is greater than the second pressure threshold. The system may further determine, based on the second pressure value and the second pressure threshold, that the blower does not meet the conditions for turning on, and then control the blower to not turn on, thereby protecting the blower.

[0054] Specifically, if the second pressure value is greater than the second pressure threshold, it can be determined that the blowing device does not meet the start-up conditions.

[0055] like Figure 5As shown, the air supply system further includes a supercharging device 148, which is disposed between the smoke tester 130 and the engine 114. The supercharging device 148 is connected to the inlet of the input pipeline 124 via a third connecting line 144. The controller 132 is further configured to execute step S211 of increasing the speed of the supercharging device when the exhaust volume of the engine increases. The provision of the supercharging device allows the system to rapidly increase pressure even when the pressure in the input pipeline is low.

[0056] Specifically, the supercharging device can be an exhaust gas turbocharger. An exhaust gas turbocharger consists of a turbine and a compressor. Exhaust gas from the engine is introduced into the turbine, where its energy drives the turbine's rotation. This in turn drives a coaxial compressor, which draws in atmospheric air, compresses it, cools it, and delivers it to the cylinders for combustion, thereby achieving supercharging. The pressure in the input line is related to the speed of the supercharging device and is generally around 0-4 bar.

[0057] In order to further determine whether the blower device has failed, after controlling the above-mentioned blower device to start up to replenish air to the above-mentioned engine, the above-mentioned controller is also used to execute: step S212, controlling the above-mentioned third pressure sensor to detect the pressure in the above-mentioned second connecting pipeline to obtain a fourth pressure value; step S213, determining whether the above-mentioned fourth pressure value is greater than the fifth pressure threshold, and when the above-mentioned fourth pressure value is less than or equal to the above-mentioned fifth pressure threshold, determining that the above-mentioned blower device has failed and outputting a fault signal.

[0058] Specifically, since the air supply capacity of the blower is limited, when the engine intake pressure is greater than the air supply pressure, air will flow back into the blower, causing damage to the electric blower. The fifth pressure threshold range is 0 to 1 bar.

[0059] In some embodiments, the controller is further configured to perform step S216 of controlling the gas compression device and the air blower to not operate if either the smoke density value or the engine load growth rate is less than or equal to a corresponding air supply threshold. The system quickly determines that air supply is not necessary based on the smoke density value and the engine load growth rate, and thereby stops air supply, further saving energy consumption of the gas compression device and the air blower.

[0060] Specifically, if the smoke density value is less than or equal to the corresponding air supply threshold, it indicates that black smoke is no longer present and air supply can be stopped. If the load growth rate is less than or equal to the corresponding air supply threshold, it indicates that the engine has met the rapid response condition and air supply can be stopped.

[0061] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the method executed by the controller of the present application will be described in detail below in combination with specific embodiments.

[0062] This embodiment relates to a specific method executed by a controller, such as Figure 6 As shown, the following steps are included:

[0063] Step S1: measuring the real-time smoke value SF1 or the engine load growth rate Q1;

[0064] Step S2: determining whether a first condition is satisfied: the measured smoke density value SF1 > the black smoke density limit SF0 or the measured load growth rate Q1 > the set load growth rate reference Q0. If the first condition is not satisfied, the high-pressure air supply solenoid valve is closed and the electric blower is powered off. If the first condition is satisfied, determining whether a second condition is satisfied: the high-pressure air bottle pressure P1 > the minimum pressure limit P0.

[0065] Step S3: If the second condition is not met, output a signal that "the air bottle pressure is lower than the minimum pressure limit, and the air supply solenoid valve is closed", and determine whether the third condition is met: the engine intake pressure P2 > the stable pressure P3 after the electric blower is turned on. If the second condition is met, determine whether the fourth condition is met: the electric blower outlet pressure P4 > 0.

[0066] Step S4: If the third condition is not met, the electric blower is powered on; if the third condition is met, an alarm is sounded, the electric blower is prohibited from being turned on, and the air supply fails;

[0067] Step S5: If the fourth condition is met, it is determined that the electric blower is turned on. If the fourth condition is not met, the air supply solenoid valve is turned on.

[0068] Step S6: If the fourth condition is not met, an alarm is sounded, the electric blower cannot be turned on, and the air replenishment fails. If the fourth condition is met, a signal "the electric blower is turned on" is output.

[0069] The controller includes a processor and memory. The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be provided, and the gas replenishment system is controlled by adjusting the kernel parameters.

[0070] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0071] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device containing the computer-readable storage medium is controlled to execute:

[0072] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0073] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0074] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0075] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0076] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0077] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0078] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0079] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0080] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0081] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0082] An embodiment of the present invention provides a processor configured to run a program, wherein the program, when run, executes:

[0083] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0084] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0085] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0086] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0087] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0088] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0089] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0090] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0091] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0092] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0093] An embodiment of the present invention provides a device, comprising a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps are performed:

[0094] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0095] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0096] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0097] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0098] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0099] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0100] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0101] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0102] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0103] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0104] The present application also provides a computer program product, which, when executed on a data processing device, is adapted to execute a program for initializing at least the following method steps:

[0105] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0106] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0107] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0108] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0109] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0110] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0111] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0112] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0113] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0114] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0115] An embodiment of the present invention further provides a vehicle comprising any one of the above-mentioned air supply systems. The vehicle may be a vessel, a vehicle, or other vehicle with a high air supply demand.

[0116] The air supply system includes a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device, and a controller, wherein the engine has an input pipeline and an output pipeline, the gas compression device is connected to the input pipeline via a first connecting pipeline, the first pressure sensor is disposed at one end of the first connecting pipeline close to the gas compression device, the second pressure sensor is disposed in the input pipeline, the blower device is connected to the input pipeline via a second connecting pipeline, the third pressure sensor is disposed at one end of the second connecting pipeline close to the blower device, the smoke density test device is connected to the engine via the output pipeline, and the controller is configured to execute:

[0117] Step S201, controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load increase rate of the engine;

[0118] Specifically, the smoke test equipment is used to measure real-time engine exhaust smoke. When the smoke value exceeds the set visible smoke value, the exhaust emits black, visible smoke. The load growth rate is the ratio of the engine load increase per unit time to the rated load. The unit time can be 500 milliseconds or 1 second, and those skilled in the art can adjust it as needed.

[0119] Step S202: determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold; if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold;

[0120] Specifically, the load growth rate and smoke density values ​​described above can meet the diverse needs of different users. For example, if a user is concerned about black smoke emission from a ship, smoke density can be used as a factor in initiating air injection. For users who are concerned about engine responsiveness and want a quick engine response when loaded, the load growth rate can be used as a factor in initiating air injection. The air injection threshold corresponding to the smoke density value can be 1 to 1.5 FSN, and the air injection threshold corresponding to the load growth rate can be 5% to 10%.

[0121] Step S203, when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply gas to the engine;

[0122] Specifically, the first pressure value is the pressure value at the outlet of the gas compression device, and the first pressure threshold may be 10 to 15 bar.

[0123] Step S204, controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value;

[0124] Specifically, the second pressure value is actually the pressure in the engine's intake duct. Because the electric blower must be started a maximum number of times per unit time to prevent overheating, the air replenishment strategy prioritizes using a gas compression device for air replenishment. When the cylinder pressure falls below the minimum protection pressure, the air blower is then determined to be ready for air replenishment.

[0125] Step S205 : When the second pressure value is less than or equal to the second pressure threshold, the blower device is controlled to start to supply air to the engine.

[0126] Specifically, the above-mentioned second pressure threshold can be 1 to 2 bar. In fact, the above-mentioned second pressure threshold is the stable airway pressure after the blower is turned on. The above-mentioned method can be applied to different working conditions of the engine, for example: the engine is idling at no load, at this time the load on the combined transmission is light, the gas compression device can meet the smoke density value or load growth rate factor, if the above-mentioned first pressure value is small, the blower can also meet the requirements; the engine is idling at medium load, at this time the load on the combined transmission is moderate, if the smoke density value or load growth rate factor is still not met after the gas compression device is turned on, and the first pressure value is lower than the first pressure threshold, then the blower is turned on; the engine is idling at full load, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine runs at low speed for a long time, at this time the load is heavy, the gas compression device is turned on to the lowest first pressure value, and then the blower is turned on; the engine is suddenly loaded at medium and high speed, at this time, due to the high pressure of the engine input pipeline, the above-mentioned gas compression device is directly used to replenish air.

[0127] Through this embodiment, a vehicle is provided, which includes an air supply system, which includes a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device and a controller, wherein the controller is used to execute the following operations: controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, receiving the smoke density value and the load growth rate of the engine; determining whether at least one of the smoke density value and the load growth rate of the engine is greater than a corresponding air supply threshold, and when at least one of the smoke density value and the load growth rate of the engine is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than the first pressure threshold; when the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to supply air to the engine; controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value; and when the second pressure value is less than or equal to the second pressure threshold, controlling the blower device to start to supply air to the engine. The air supply system connects the gas compression equipment and the blowing equipment to the engine's input pipeline respectively, and determines the real-time air supply working conditions and the actual service life of parts through the first pressure sensor, the second pressure sensor and the third pressure sensor. Combining the advantages and disadvantages of two different air supply methods, two different air supply methods are adopted under different conditions, which solves the problem in the existing technology that different air supply methods are required under different load conditions.

[0128] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0129] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0130] The air supply system of the present application includes a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, a blower device, a smoke density test device and a controller, wherein the controller is used to perform the following operations: controlling the smoke density test device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, receiving the smoke density value and the load growth rate of the engine; determining whether at least one of the smoke density value and the load growth rate of the engine is greater than a corresponding air supply threshold value, and when at least one of the smoke density value and the load growth rate of the engine is greater than the corresponding air supply threshold value, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than the first pressure threshold value; when the first pressure value is greater than the first pressure threshold value, controlling the gas compression device to start to supply air to the engine; controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value; and when the second pressure value is less than or equal to the second pressure threshold value, controlling the blower device to start to supply air to the engine. The air supply system connects the gas compression equipment and the blowing equipment to the engine's input pipeline respectively, and determines the real-time air supply working conditions and the actual service life of parts through the first pressure sensor, the second pressure sensor and the third pressure sensor. Combining the advantages and disadvantages of two different air supply methods, two different air supply methods are adopted under different conditions, which solves the problem in the existing technology that different air supply methods are required under different load conditions.

[0131] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An engine redundant air supply system, characterized in that: The system comprises a gas compression device, a first pressure sensor, a second pressure sensor, a third pressure sensor, an engine, an air blower, a smoke density test device, and a controller, wherein the engine has an input pipeline and an output pipeline, the gas compression device is connected to the input pipeline through a first connecting pipeline, the first pressure sensor is provided at one end of the first connecting pipeline close to the gas compression device, the second pressure sensor is provided in the input pipeline, the air blower is connected to the input pipeline through a second connecting pipeline, the third pressure sensor is provided at one end of the second connecting pipeline close to the air blower, the smoke density test device is connected to the engine through the output pipeline, and the controller is configured to perform: controlling the smoke density testing device to detect the smoke density of the exhaust gas output by the engine to obtain a smoke density value, and receiving the smoke density value and a load growth rate of the engine; determining whether at least one of the smoke density value and the engine load growth rate is greater than a corresponding air supply threshold, and if at least one of the smoke density value and the engine load growth rate is greater than the corresponding air supply threshold, controlling the first pressure sensor to detect the pressure of the first connecting pipeline to obtain a first pressure value, and determining whether the first pressure value is greater than a first pressure threshold; When the first pressure value is greater than the first pressure threshold, controlling the gas compression device to start to replenish gas to the engine; controlling the second pressure sensor to detect the pressure in the input pipeline to obtain a second pressure value; When the second pressure value is less than or equal to a second pressure threshold, the blower device is controlled to start to supply air to the engine.

2. The air supply system according to claim 1, characterized in that: The air supply system further includes a first valve, which is provided on the first connecting pipeline between the gas compression device and the engine, and controls the gas compression device to open to supply air to the engine, including: The first valve is controlled to open so that the gas compression device is opened to supplement the gas to the engine.

3. The air supplement system according to claim 1, characterized in that: The air supply system further includes a second valve, which is provided on the second connecting pipeline between the air blowing device and the third pressure sensor, and controls the air blowing device to open to supply air to the engine, including: The second valve is controlled to open so that the air blowing device supplies air to the engine.

4. The air supplement system according to claim 1, characterized in that: The air supply system further includes a third valve, the gas compression device includes an air compressor and an air storage device, the air storage device is directly connected to the first connecting pipeline, and the third valve is disposed on the third connecting pipeline between the air compressor and the air storage device. The controller is further configured to execute: When the first pressure value is less than or equal to the first pressure threshold, controlling the third valve to open so that the air compressor supplies air to the air storage device; controlling the first pressure sensor to detect the first connecting pipeline after gas replenishment to obtain a third pressure value; It is determined whether the third pressure value is greater than a third pressure threshold. If the third pressure value is greater than the third pressure threshold, the third valve is controlled to close so that the air compressor stops supplying air to the air storage device.

5. The air supplement system according to claim 1, characterized in that: The air supply system further includes a fourth valve, which is disposed on the second connecting line between the engine and the third pressure sensor. The controller is further configured to execute: When the second pressure value is greater than a fourth pressure threshold, the fourth valve is controlled to operate to prevent the gas in the input pipeline from flowing back into the second connecting pipeline.

6. The air supplement system according to claim 1, characterized in that: The controller is further configured to execute: When the second pressure value is greater than the second pressure threshold, the air blowing device is controlled not to be turned on.

7. The air supplement system according to claim 6, characterized in that: The air supply system further includes a pressurizing device, which is disposed between the smoke test device and the engine and is connected to the inlet of the input pipeline via a third connecting pipeline. The controller is further configured to execute: When the exhaust volume of the engine increases, the rotation speed of the supercharging device is controlled to increase.

8. The air supplement system according to claim 1, characterized in that: After controlling the blower device to start to supply air to the engine, the controller is further configured to execute: controlling the third pressure sensor to detect the pressure in the second connecting pipeline to obtain a fourth pressure value; It is determined whether the fourth pressure value is greater than a fifth pressure threshold. If the fourth pressure value is less than or equal to the fifth pressure threshold, it is determined that the air blowing device is faulty and a fault signal is output.

9. The air supplement system according to claim 8, characterized in that: The controller is further configured to execute: When one of the smoke value and the engine load growth rate is less than or equal to a corresponding air supply threshold, the gas compression device and the air blowing device are controlled not to be turned on.

10. A means of transport, characterized in that: A gas supplement system comprising the gas supplement system according to any one of claims 1 to 9.

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