A low speed marine vessel control system

Abstract

This invention discloses a low-speed ship control system, comprising a main control module, an auxiliary control module, and a cylinder control module. The main control module acquires ship operating status information. The auxiliary control module is communicatively connected to the main control module, receives the ship operating status information, and controls the power system to provide control power information and the pressure system to adjust scavenging pressure information based on the ship operating status information. The cylinder control module is communicatively connected to both the main control module and the auxiliary control module, and receives the ship operating status information, control power information, and scavenging pressure information. Based on these information, it controls multiple fuel injectors in the ship's cylinders to operate sequentially. This design ensures sufficient fuel injection at low loads, improves fuel atomization quality, and reduces problems such as incomplete combustion, increased fuel consumption, and excessive emissions when the ship is sailing at low speeds.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of ship control technology, and in particular to a low-speed ship control system. Background Technology

[0002] As the shipping industry continues to demand higher standards of energy conservation, environmental protection, and maneuverability, the performance of ships under low-speed and low-load conditions is receiving increasing attention. In scenarios such as entering and leaving ports, berthing and unberthing, and navigating narrow waterways, ships often need to maintain low-speed operation for extended periods. Under these conditions, the fuel supply, air intake conditions, and combustion environment are significantly different from the rated operating conditions.

[0003] Existing traditional marine control systems are mostly designed for high-load and high-speed operating conditions. At low speeds, their fuel injection control strategies still rely on dual-fuel engines directly controlling the fuel valve assembly for ignition control and simultaneous injection from all injectors. This approach struggles to achieve precise matching and dynamic coordination, and is ill-suited to the combustion characteristics and control requirements under low-load conditions. Under low-load conditions, simultaneous injection from multiple injectors within the same cylinder can easily lead to insufficient fuel quantity from individual injectors, low injection pressure, and poor fuel atomization, resulting in incomplete combustion, increased fuel consumption, and excessive emissions. Summary of the Invention

[0004] This invention provides a low-speed ship control system that controls multiple fuel injectors in the control cylinder to work sequentially when the ship is running at low speed, ensuring sufficient fuel injection volume when the ship is under low load, improving fuel atomization quality, and avoiding problems such as incomplete fuel combustion, increased fuel consumption, and excessive exhaust emissions.

[0005] This invention provides a low-speed ship control system, which includes a main control module, an auxiliary control module, and a cylinder control module. The main control module is used to acquire ship operating status information; The auxiliary control module is connected to the main control module to receive ship operating status information and control the power system to provide control power information and control the pressure system to adjust scavenging air pressure information based on the ship operating status information. The cylinder control module is communicatively connected to the main control module and the auxiliary control module, respectively. It is used to receive ship operating status information, control power information and scavenging pressure information, and control multiple injectors in the ship's cylinder to work sequentially according to the ship operating status information, control power information and scavenging pressure information.

[0006] Optionally, the low-speed ship control system also includes an emissions treatment module, which is communicatively connected to the cylinder control module; The cylinder control module is also used to receive exhaust emission commands output by the main control module and control the emission treatment module to shut down after a delay according to the exhaust emission commands.

[0007] Optionally, the main control module is also used to acquire ship engine operating data; The cylinder control module is also used to receive ship engine operating data and set the injector's injection advance angle based on the ship engine operating data.

[0008] Optionally, the low-speed vessel control system may also include a remote control security module; The remote control security module is connected to the main control module to receive ship engine operating data and control the start and stop of the ship engine and adjust the speed and load status of the ship engine according to the ship engine operating data.

[0009] Optionally, the remote control security module includes both digital signal interfaces and analog signal interfaces; The digital signal interface is connected to the main control module to receive ship operating status information, enabling the remote control security module to control the ship to reduce its operating speed or stop operating based on the ship operating status information. The analog signal interface is connected to the main control module to receive ship engine operating data, enabling the remote control and security module to control the start and stop of the ship engine and adjust its speed and load status based on the operating data.

[0010] Optionally, the low-speed ship control system may also include a dual-fuel control module; The dual-fuel control module is connected to the main control module to receive ship operating status information and adjust the fuel injection quantity of the dual-fuel injectors according to the ship operating status information.

[0011] Optionally, the low-speed vessel control system may also include a display module; The display module is connected to the main control module and the dual-fuel control module to receive and display ship operating status information and fuel injection quantity.

[0012] Optionally, the dual-fuel control module includes a monitoring unit, which is communicatively connected to the main control module; The monitoring unit is used to monitor the operating status information of the dual-fuel engine and transmit the operating status information of the dual-fuel engine to the main control module; The main control module is used to control the start and stop of the dual-fuel engine based on the operating status information of the dual-fuel engine.

[0013] Optionally, the low-speed ship control system may also include an interaction module; The interactive module is connected to the ship's central control console and the main control module. It is used to receive control commands from the ship's central control console, filter the control commands according to the execution function of the main control module, and transmit the filtered matching control commands to the main control module. The main control module controls the ship according to the matching control commands.

[0014] Optionally, the low-speed ship control system is applicable to ship operating speeds ranging from 9.26 km / h to 14.82 km / h.

[0015] This invention provides a low-speed ship control system. It comprises a main control module, an auxiliary control module, and a cylinder control module. The main control module acquires ship operating status information. The auxiliary control module, communicatively connected to the main control module, receives the ship operating status information transmitted by the main control module and controls the power system to provide control power information and the pressure system to adjust scavenging pressure information based on the ship operating status information. The cylinder control module, communicatively connected to both the main and auxiliary control modules, receives ship operating status information, control power information, and scavenging pressure information, and controls multiple injectors in the ship's cylinders to operate sequentially based on these information. Through the coordinated operation of the main control module, auxiliary control module, and cylinder control module, multiple injectors in the cylinders operate sequentially during low-speed ship navigation, ensuring sufficient fuel injection and good fuel atomization quality under low load, thereby maintaining optimal thermal efficiency during low-speed operation. This solves the problems of insufficient fuel injection and poor fuel atomization caused by multiple injectors operating simultaneously during low-speed ship navigation, avoiding incomplete combustion, high fuel consumption, and excessive emissions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a low-speed ship control system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention.

[0017] In this embodiment of the invention, the reference numerals and corresponding feature names are as follows: 10-Main control module, 20-Auxiliary control module, 30-Cylinder control module, 40-Emission treatment module, 50-Remote control and security module, 51-Digital signal interface, 52-Analog signal interface, 60-Dual fuel control module, 61-Monitoring unit, 70-Display module, 80-Interactive module, 90-Ship central control console. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "upper" or "lower" of another element, it can be formed not only directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Figure 1 This is a schematic diagram of a low-speed ship control system provided by an embodiment of the present invention. This embodiment can be applied to solve the problem of incomplete combustion and excessive emissions caused by insufficient fuel injection due to multiple injectors operating simultaneously at low speeds. Figure 1As shown, the low-speed ship control system includes a main control module 10, an auxiliary control module 20, and a cylinder control module 30. The main control module 10 is used to acquire ship operating status information. The auxiliary control module 20 is communicatively connected to the main control module 10 and is used to receive ship operating status information, and control the power system to provide control power information and control the pressure system to adjust scavenging pressure information according to the ship operating status information. The cylinder control module 30 is communicatively connected to both the main control module 10 and the auxiliary control module 20 and is used to receive ship operating status information, control power information, and scavenging pressure information, and control multiple injectors (not shown in the figure) in the ship's cylinder to work sequentially according to the ship operating status information, control power information, and scavenging pressure information.

[0022] In this embodiment, the low-speed ship control system includes a main control module 10, an auxiliary control module 20, and a cylinder control module 30. The main control module 10 can be understood as a major functional module integrating program storage, data processing, communication interfaces, and logical operation capabilities, capable of controlling the operation of actuators by receiving information and executing preset programs or real-time algorithms. Exemplarily, the main control module 10 includes, but is not limited to, a central processing unit; this embodiment of the invention does not impose such limitations.

[0023] Specifically, in the low-speed ship control system, the main control module 10 is used to acquire ship operating status information, which can be understood as the ship's operating speed information. For example, when the ship enters or leaves port or berths, the main control module 10 acquires the ship operating status information as low-speed operation; when the ship is sailing at sea, the main control module 10 acquires the ship operating status information as high-speed or full-speed operation.

[0024] The auxiliary control module 20 can be understood as a functional module that works with the main control module 10 in the system to complete local, specific, or auxiliary control tasks. The auxiliary control module 20 can receive instructions from the main control module 10 and independently complete the driving of the corresponding subsystem or local equipment. The auxiliary control module 20 includes, but is not limited to, a motor drive module and a pressure control module, but this embodiment of the invention does not impose any limitations on them.

[0025] Specifically, the auxiliary control module 20 is communicatively connected to the main control module 10. This communication connection can be, but is not limited to, serial communication (e.g., RS485 or RS232) or fieldbus communication (e.g., Controller Area Network (CAN)). This embodiment of the invention does not impose any limitations on these methods. The main control module 10 transmits the acquired ship operating status information to the auxiliary control module 20 via communication. The auxiliary control module 20 receives the ship operating status information and, based on this information, controls the power system to provide control power information and controls the pressure system to adjust the scavenging air pressure.

[0026] For example, after receiving the ship's operating status information, the auxiliary control module 20 controls the ship's hydraulic power supply system to provide power and controls the electronic starter pump to provide scavenging pressure based on the ship's operating status information. At the same time, the auxiliary control module 20 can also control the start or stop of equipment such as blowers based on the scavenging pressure.

[0027] The cylinder control module 30 can be understood as a control component capable of receiving control commands and implementing cylinder extension / retraction, start / stop, speed adjustment, and position control according to the control commands. Specifically, the cylinder control module 30 is communicatively connected to both the main control module 10 and the auxiliary control module 20. The communication connection method is not limited to serial communication or fieldbus communication. The auxiliary control module 20 controls the power system to provide control power information and controls the pressure system to adjust the scavenging pressure information, while simultaneously transmitting the control power information and scavenging pressure information to the cylinder control module 30. The cylinder control module 30 receives the ship's operating status information sent by the main control module 10 and the control power information and scavenging pressure information transmitted by the auxiliary control module 20, and controls multiple injectors in the ship's cylinders to work sequentially based on the ship's operating status information, control power information, and scavenging pressure information. When the ship's operating speed is low, the control power provided by the system is small, and the scavenging pressure is low, the multiple injectors in the ship's cylinders are controlled to work in turn to avoid insufficient fuel injection caused by multiple injectors working simultaneously.

[0028] For example, when a ship enters or leaves port, the fuel injection volume of the ship's injectors is small due to the extremely low ship load. If a cylinder includes a first injector, a second injector, and a third injector, the cylinder control module 30 controls the first, second, and third injectors to work alternately, rather than simultaneously. This ensures that each injector has sufficient working pressure under low ship load, achieving good atomization quality and preventing combustion deterioration.

[0029] The low-speed ship control system provided in this embodiment of the invention comprises a main control module 10, an auxiliary control module 20, and a cylinder control module 30. The main control module 10 acquires ship operating status information. The auxiliary control module 20 is communicatively connected to the main control module 10, receives the ship operating status information transmitted by the main control module 10, and controls the power system to provide control power information and the pressure system to adjust scavenging pressure information based on the ship operating status information. The cylinder control module 30 is communicatively connected to both the main control module 10 and the auxiliary control module 20, receives the ship operating status information, control power information, and scavenging pressure information, and controls multiple injectors in the ship's cylinders to operate sequentially based on these information. Through the coordinated operation of the main control module 10, the auxiliary control module 20, and the cylinder control module 30, multiple injectors in the cylinders operate sequentially when the ship is sailing at low speed, ensuring sufficient fuel injection and good fuel atomization quality under low load, thereby maintaining optimal thermal efficiency when the ship is operating at low speed. It solves the problems of insufficient fuel injection and poor fuel atomization caused by multiple injectors working simultaneously during low-speed ship navigation, and avoids incomplete combustion, high fuel consumption and excessive emissions.

[0030] Figure 2 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the low-speed ship control system also includes an emission treatment module 40, which is communicatively connected to the cylinder control module 30. The cylinder control module 30 is also used to receive exhaust emission commands output by the main control module 10 and control the emission treatment module 40 to shut down after a delay according to the exhaust emission commands.

[0031] In this embodiment, the low-speed ship control system further includes an emission treatment module 40. The emission treatment module 40 is a functional module capable of purifying and treating exhaust gases generated during the operation of ships, vehicles, or internal combustion engines to reduce pollutant emissions. The methods employed by the emission treatment module 40 to reduce the pollutant content of exhaust gases include, but are not limited to, selective catalytic reduction (SCR) and exhaust gas recirculation (EGR).

[0032] Specifically, the emission treatment module 40 is communicatively connected to the cylinder control module 30, which also receives exhaust emission commands from the main control module 10. Since different sea areas have different regulations regarding ship exhaust emissions, the main control module 10 needs to send corresponding exhaust emission commands to the cylinder control module 30 in different sea areas. This causes the cylinder control module 30 to control the emission treatment module 40 to shut down after a delay, allowing exhaust gas to recirculate within the emission treatment module 40, reducing pollutant levels and preventing excessive pollutant emissions in strictly restricted sea areas.

[0033] Furthermore, the cylinder control module 30 can adjust the opening and closing times of the exhaust valve in the cylinder, as well as the opening degree of the exhaust valve, in real time. This enables adjustable exhaust, optimizes the scavenging process within the cylinder, promptly removes exhaust gas from the cylinder, and draws in fresh air from the outside, ensuring that the ship meets exhaust emission standards under different loads.

[0034] For example, when the ship is sailing slowly in the port area, the cylinder control module 30 delays the opening and closing times of the exhaust valve in the cylinder and reduces the opening degree of the exhaust valve to ensure sufficient scavenging and avoid incomplete combustion. When the ship is sailing at full speed at sea, the cylinder control module 30 advances the opening time of the exhaust valve in the cylinder to allow exhaust gas to be discharged quickly and improve exhaust efficiency.

[0035] The low-speed ship control system provided in this embodiment of the invention includes an emission treatment module 40, which is communicatively connected to a cylinder control module 30. The cylinder control module 30 receives exhaust gas emission commands output by the main control module 10 and controls the emission treatment module 40 to shut down after a delay according to the exhaust gas emission commands. This configuration allows for continued purification of residual exhaust gas after the ship's engine has stopped, ensuring that the residual exhaust gas is still fully treated, reducing exhaust gas emission pollution, and avoiding the problem of instantaneous excessive emissions caused by direct emission of unpurified exhaust gas.

[0036] Optional, you can continue to refer to Figure 1 The main control module 10 is also used to acquire ship engine operating data; the cylinder control module 30 is also used to receive ship engine operating data and set the injection advance angle of the injector (not shown in the figure) according to the ship engine operating data.

[0037] Specifically, the main control module 10 is also used to acquire ship engine operating data, which includes ship engine start / stop signals, ship engine speed, ship engine rotation angle signals, and ship engine operating load information, etc. This embodiment of the invention does not limit this.

[0038] The cylinder control module 30 receives the ship engine's operating data and sets the injector's injection advance angle based on this data. The injection advance angle can be understood as the crankshaft angle difference between the start of injection and the piston's position at the top of the cylinder. By acquiring accurate and effective ship engine operating data, the cylinder control module 30 provides a basis for operators to set the injection advance angle, ensuring the injector precisely initiates injection according to the set injection advance angle and injection timing. Simultaneously, it precisely controls the fuel injection process based on the target injection quantity and injection pattern commands set by the main control module 10.

[0039] The low-speed ship control system provided in this embodiment of the invention acquires ship engine operating data through the main control module 10, and the cylinder control module 30 receives the ship engine operating data and sets the injection advance angle of the injectors based on the ship engine operating data. By dynamically setting the injection advance angle according to the engine operating data, the fuel injection control is matched with the engine operating conditions in real time, optimizing the fuel combustion initiation point and combustion process, improving the engine's power performance and thermal efficiency, reducing fuel consumption, and ensuring the safe, stable, and efficient operation of the engine. This solves the problem of incomplete combustion and fuel waste caused by injecting fuel too early or too late.

[0040] Figure 3 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention, as shown below. Figure 3 As shown, the low-speed ship control system also includes a remote control security module 50; the remote control security module 50 is communicatively connected to the main control module 10, and is used to receive ship engine operating data, and control the start and stop of the ship engine and adjust the speed and load status of the ship engine according to the ship engine operating data.

[0041] In this embodiment, the low-speed ship control system further includes a remote control security module 50. The remote control security module 50 can be understood as a functional module capable of remote control, status monitoring, and safety protection. The remote control security module 50 includes a speed control unit, a load control unit, a safety protection unit, or an emergency operation unit; this embodiment of the invention does not impose any limitations on this.

[0042] Specifically, the remote control security module 50 is communicatively connected to the main control module 10. The main control module 10 transmits the acquired ship engine operation data to the remote control security module 50. The remote control security module 50 receives the ship engine operation data and controls the start and stop of the ship engine and adjusts the speed and load status of the ship engine according to the ship engine operation data.

[0043] For example, when the main control module 10 collects real-time data showing that the operating temperature of the ship's engine is 85°C and the engine speed is 105 r / min during normal operation, it transmits the current operating data to the remote control safety module 50. Based on this data, the remote control safety module 50 determines that all parameters of the ship's engine are within the normal and safe range, and therefore allows the engine to continue running without initiating shutdown protection. When the remote control safety module 50 receives data showing that the operating temperature of the ship's engine reaches 110°C, it immediately determines that the ship's engine is in a dangerous operating state, controls the ship's engine to reduce its speed and load, and if the temperature continues to rise, it controls the ship's engine to shut down, initiating shutdown protection.

[0044] The low-speed ship control system provided in this embodiment of the invention, by setting up a remote control safety module 50, which is communicatively connected to the main control module 10, receives ship engine operating data and controls the start and stop of the ship engine and adjusts the engine speed and load status according to the ship engine operating data, realizing real-time monitoring of the ship engine status. It automatically adjusts the engine speed and load according to the ship engine's operating status and executes corresponding protective actions in a timely manner, improving the safety, automation, and ease of operation of the engine, and ensuring the safety of ship navigation. This solves the problem that the ship engine's operating status cannot be monitored in a timely manner during navigation, leading to operational failures and the inability to guarantee operational safety in a timely manner.

[0045] Optional, you can continue to refer to Figure 3 The remote control security module 50 includes a digital signal interface 51 and an analog signal interface 52. The digital signal interface 51 is communicatively connected to the main control module 10 and is used to receive ship operating status information, enabling the remote control security module 50 to control the ship to reduce its operating speed or stop operating based on the ship operating status information. The analog signal interface 52 is communicatively connected to the main control module 10 and is used to receive ship engine operating data, enabling the remote control security module 50 to control the start and stop of the ship engine and adjust the ship engine speed and load status based on the ship engine operating data.

[0046] In this embodiment, the remote control security module 50 includes a digital signal interface 51 and an analog signal interface 52. The digital signal interface 51 is used to receive discrete, discontinuous digital signals, while the analog signal interface 52 is used to receive continuously changing signals. The forms of the digital signal interface 51 and the analog signal interface 52 include, but are not limited to, interface forms or data connection lines; this embodiment of the invention does not impose any limitations on these forms.

[0047] Specifically, the digital signal interface 51 is communicatively connected to the main control module 10. The main control module 10 transmits the ship's operating status information as a digital signal to the remote control security module 50 via the digital signal interface 51. The remote control security module 50 receives the ship's operating status information and controls the ship to reduce its speed or stop operating based on this information. When the remote control security module 50 determines that the ship is in a slightly dangerous state based on the ship's operating status information, for example, if the ship's speed exceeds the prescribed speed by less than 5%, the remote control security module 50 controls the ship to reduce its speed. When the remote control security module 50 determines that the ship is in a severely dangerous state based on the ship's operating status information, for example, if the ship's speed exceeds the prescribed speed by 50%, the remote control security module 50 directly controls the ship to stop operating.

[0048] The analog signal interface 52 is connected to the main control module 10. The main control module 10 transmits the ship engine operating data to the remote control and security module 50 through the analog signal interface 52. The ship engine operating data includes, but is not limited to, the ship engine operating temperature, the ship engine speed, and the ship engine load status. The remote control and security module 50 receives the ship engine operating data and controls the start and stop of the ship engine and adjusts the ship engine speed and load status according to the ship engine operating data.

[0049] For example, when the remote control security module 50 receives a signal that the operating temperature of the ship engine exceeds the preset safe operating temperature threshold of the ship engine, the remote control security module 50 immediately determines that the ship engine is in a dangerous operating state, controls the ship engine to reduce its speed and load, and if the temperature continues to rise, controls the ship engine to shut down for shutdown protection.

[0050] The low-speed ship control system provided in this embodiment of the invention includes a digital signal interface 51 and an analog signal interface 52 in the remote control security module 50. The digital signal interface 51 receives ship operating status information, enabling the remote control security module 50 to control the ship to reduce its speed or stop operation based on this information. The analog signal interface 52 receives ship engine operating data, allowing the remote control security module 50 to control the start / stop of the ship engine and adjust its speed and load based on this data. By using both digital and analog signal interfaces 51 and 52, the system achieves classified acquisition and transmission of digital switch signals and analog sensor signals during ship operation, reducing transmission interference between signals and improving signal acquisition accuracy and system anti-interference capability. Simultaneously, it enhances the accuracy and reliability of engine operating status judgment and solves the problem of false alarms and malfunctions caused by signal crosstalk between different signals.

[0051] Figure 4This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the low-speed ship control system also includes a dual-fuel control module 60; the dual-fuel control module 60 is communicatively connected to the main control module 10 and is used to receive ship operating status information and adjust the fuel injection quantity of the dual-fuel injector (not shown in the figure) according to the ship operating status information.

[0052] In this embodiment, the low-speed ship control system also includes a dual-fuel control module 60, which can be understood as the control unit of the ship's dual-fuel engine. The dual-fuel control module 60 can coordinate and control the injection and switching of the two fuels according to the ship's operating conditions, fuel status, and control commands, ensuring that the engine can operate stably, efficiently, and with low emissions in both single-fuel mode and dual-fuel mixed combustion mode.

[0053] Specifically, the dual-fuel control module 60 is communicatively connected to the main control module 10, receives ship operating status information output by the main control module 10, and adjusts the injection quantity of each of the two fuels and the total injection quantity of the dual fuels in the dual-fuel injector according to the ship operating status information. The dual-fuel control module 60 and the main control module 10 work together to adapt to different ship operating conditions, ensuring stable, efficient, and low-emission operation of the dual-fuel engine.

[0054] For example, when a vessel is sailing at low speed in the port area, the main control module 10 detects the low-speed operation information and transmits it to the dual-fuel control module 60. The dual-fuel control module 60 determines that the vessel is currently operating at low speed and low load, and that direct use of gaseous fuel could lead to unstable combustion. The dual-fuel control module 60 then controls the dual-fuel engine to reduce the gaseous fuel injection quantity or temporarily shut down gas combustion, while activating diesel injection to maintain stable combustion using diesel as the primary fuel.

[0055] The low-speed ship control system provided in this embodiment of the invention includes a dual-fuel control module 60, which is communicatively connected to the main control module 10. This module receives ship operating status information and adjusts the fuel injection quantity of the dual-fuel injectors based on this information. This configuration, through the collaborative operation of the main control module 10 and the dual-fuel control module 60, allows for real-time adjustment of the injection quantity and ratio of the two fuels according to the ship's operating status, ensuring optimal fuel combustion and stable fuel combustion during low-speed and low-load operation. This solves the problems of incomplete fuel combustion, unstable ship operation, and excessive pollution emissions caused by a fixed dual-fuel injection mode that cannot be adjusted in a timely manner according to the ship's operating status.

[0056] Figure 5 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the low-speed ship control system also includes a display module 70; the display module 70 is communicatively connected to the main control module 10 and the dual-fuel control module 60, and is used to receive and display ship operating status information and fuel injection quantity.

[0057] In this embodiment, the low-speed ship control system further includes a display module 70. The display module 70 can be understood as the human-machine interface in the control system, capable of receiving and visually presenting control information and data for real-time monitoring and operation by personnel. For example, the display module 70 may include, but is not limited to, a touchscreen; this embodiment of the invention does not impose any limitations on this.

[0058] Specifically, the display module 70 is communicatively connected to the main control module 10 and the dual-fuel control module 60. It can receive and display the ship's operating status information transmitted by the main control module 10 and the fuel injection quantity output by the dual-fuel control module 60, allowing operators to promptly obtain the ship's operating status and dual-fuel injection information, and adjust the control of the ship's systems accordingly. Furthermore, the display module 70 will also output fault warning information when the ship's operating speed is too high or when a dual-fuel injection malfunctions, providing timely alerts and warnings to operators.

[0059] For example, during ship operation, the display module 70 will display the ship's current operating speed, the ship's engine speed, temperature, and other information. The display module 70 will also display the real-time injection quantity of dual fuels and the injection quantity ratio of dual fuels.

[0060] The low-speed ship control system provided in this embodiment of the invention includes a display module 70 communicatively connected to the main control module 10 and the dual-fuel control module 60. The display module 70 receives and displays ship operating status information and fuel injection quantity, enabling intuitive monitoring of ship operating conditions and fuel control status. This facilitates real-time monitoring of the ship system's operation by operators, improving equipment safety and control efficiency. The centralized display of data via the display module 70 reduces the problems of misjudgment and low control efficiency caused by the inability to intuitively obtain ship information.

[0061] Optional, you can continue to refer to Figure 4 The dual-fuel control module includes a monitoring unit 61, which is communicatively connected to the main control module 10. The monitoring unit 61 is used to monitor the operating status information of the dual-fuel engine and transmit the operating status information of the dual-fuel engine to the main control module 10. The main control module 10 is used to control the start and stop of the dual-fuel engine according to the operating status information of the dual-fuel engine.

[0062] In this embodiment, the dual-fuel control module 60 includes a monitoring unit 61, which can be understood as a hardware or functional unit that collects and detects various operating parameters and working status signals in real time. For example, the monitoring unit 61 includes, but is not limited to, a speed sensor and a temperature sensor; this embodiment of the invention does not impose any limitations on this.

[0063] Specifically, the monitoring unit 61 is communicatively connected to the main control module 10. The monitoring unit 61 monitors the operating status information of the dual-fuel engine, including but not limited to the engine's speed and operating temperature. The monitoring unit 61 transmits the acquired operating status information to the main control module 10. The main control module 10 receives the operating status information and controls the start and stop of the dual-fuel engine based on it. When an operational fault is detected in the dual-fuel engine, the main control module promptly stops the engine and shuts down the dual-fuel injection system.

[0064] For example, after the dual-fuel control module 60 controls the dual-fuel engine to start running, the monitoring unit 61 monitors the engine speed and operating temperature in real time and transmits this information to the main control module 10. When the main control module 10 receives a signal that the dual-fuel engine's operating temperature is higher than a preset temperature threshold or its speed significantly exceeds a preset speed, it controls the dual-fuel engine to stop running to prevent engine malfunction and thus avoid affecting the entire ship system.

[0065] The low-speed ship control system provided in this embodiment of the invention includes a monitoring unit 61 within the dual-fuel control module 60, which is communicatively connected to the main control module 10 to monitor the operating status information of the dual-fuel engine. This operating status information is transmitted to the main control module 10, enabling the main control module 10 to control the start and stop of the dual-fuel engine based on this information. This configuration achieves real-time monitoring and information acquisition of the dual-fuel engine's operating status, allowing the main control module 10 to intelligently control the start and stop of the dual-fuel engine based on its status, thereby controlling the injection of dual fuels and improving the safety and intelligence of dual-fuel engine control. It solves the problem of insufficient real-time status data in dual-fuel engine control, which affects ship operational safety.

[0066] Figure 6 This is a schematic diagram of another low-speed ship control system provided in an embodiment of the present invention, as shown below. Figure 6As shown, the low-speed ship control system also includes an interaction module 80; the interaction module 80 is communicatively connected to the ship control console 90 and the main control module 10, and is used to receive control commands from the ship control console 90 and filter the control commands according to the execution function of the main control module 10, and transmit the filtered matching control commands to the main control module 10, and the main control module 10 controls the ship according to the matching control commands.

[0067] In this embodiment, the low-speed ship control system further includes an interaction module 80, which is communicatively connected to the ship's central control console 90 and the main control module 10. The interaction module 80 can be understood as a functional unit in the ship's remote control system used to connect the control station and the main control system. The interaction module 80 is communicatively connected to both the ship's central control console 80 and the main control module 10, and the communication connection method includes, but is not limited to, Modbus communication.

[0068] Specifically, the interaction module 80 receives control commands from control stations such as the ship's central control console 90, filters the various control commands transmitted from the ship's central control console 90, selects control commands that match the functions that the main control module 10 can execute, and transmits the matched control commands to the main control module 10, enabling the main control module 10 to operate the ship after receiving the corresponding control commands. Furthermore, the interaction module 80 is also communicatively connected to the display module 70, transmitting the control commands from the ship's central control console 90 and the matched control commands filtered by the interaction module 80 to the display module 70 for display output, facilitating timely viewing by staff.

[0069] For example, the commands issued by the ship's central control console 90 include various control commands such as ship engine speed adjustment commands, ship engine load adjustment commands, dual-fuel mode switching commands, safety reset commands, or operating parameter display switching commands. These control commands are transmitted to the interaction module 80. The interaction module 80 filters out control commands that match the functions executed by the main control module 10. For example, the ship engine speed adjustment command and the ship engine load adjustment command are transmitted to the main control module 10, causing the main control module 10 to perform relevant operations according to the received control commands.

[0070] The low-speed ship control system provided in this embodiment of the invention establishes an interaction module 80 that is communicatively connected to the ship's central control console 90 and the main control module 10. The interaction module 80 receives control commands from the central control console 90, filters these commands according to the execution functions of the main control module 10, and transmits the filtered, matching control commands to the main control module 10. The main control module 10 then controls the ship according to these matching commands. This achieves orderly transmission and interaction of control commands between the central control console 90 and the main control module 10, ensuring that the main control module 10 only executes control commands appropriate to its functions, thus improving the accuracy and safety of ship control. It also solves the problems of system loss of control caused by concurrent or erroneous commands, and the control chaos and safety risks resulting from the direct execution of invalid or illegal commands.

[0071] Optional, you can continue to refer to Figure 6 The low-speed ship control system is applicable to ship operating speeds ranging from 9.26 km / h to 14.82 km / h.

[0072] Specifically, the low-speed ship control system provided in any optional embodiment of the present invention is applicable to ship operation at speeds between 9.26 km / h and 14.82 km / h. This speed range corresponds to the ship's speed in scenarios such as entering and leaving port, berthing and unberthing, navigating in port areas, or low-speed cruising. Since fuel injection to drive the ship requires significant power and precise control within this speed range, fuel injection is achieved through the coordinated operation of the main control module 10, auxiliary control module 20, and cylinder control module 30. This ensures complete fuel combustion at low speeds, minimizing fuel consumption while meeting emission regulations.

[0073] Furthermore, during low-speed navigation, ships also have high requirements for the response speed and control accuracy of engine speed control, load adjustment, dual-fuel switching, and safety protection. Through the coordinated cooperation between the main control module 10, auxiliary control module 20, dual-fuel control module 60, and cylinder control module 30, the stability and safety of ships during low-speed operation can be improved, avoiding ship operation safety problems caused by low operating speed.

[0074] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A low-speed ship control system, characterized in that, It includes a main control module, an auxiliary control module, and a cylinder control module; The main control module is used to acquire ship operating status information; The auxiliary control module is communicatively connected to the main control module and is used to receive the ship's operating status information, and control the power system to provide control power information and control the pressure system to adjust the scavenging air pressure information according to the ship's operating status information. The cylinder control module is communicatively connected to the main control module and the auxiliary control module, respectively, and is used to receive the ship's operating status information, the control power information and the scavenging pressure information, and control multiple injectors in the ship's cylinder to work sequentially according to the ship's operating status information, the control power information and the scavenging pressure information.

2. The low-speed ship control system according to claim 1, characterized in that, It also includes an emission treatment module, which is communicatively connected to the cylinder control module; The cylinder control module is also used to receive the exhaust gas emission command output by the main control module and control the emission treatment module to shut down after a delay according to the exhaust gas emission command.

3. The low-speed ship control system according to claim 1, characterized in that, The main control module is also used to acquire ship engine operating data; The cylinder control module is also used to receive the ship engine operating data and set the injection advance angle of the injector according to the ship engine operating data.

4. The low-speed ship control system according to claim 3, characterized in that, It also includes a remote security module; The remote control security module is communicatively connected to the main control module and is used to receive the ship engine operating data, and control the start and stop of the ship engine and adjust the speed and load status of the ship engine according to the ship engine operating data.

5. The low-speed ship control system according to claim 4, characterized in that, The remote security module includes a digital signal interface and an analog signal interface; The digital signal interface is connected to the main control module and is used to receive the ship's operating status information, so that the remote control security module can control the ship to reduce its operating speed or stop operating according to the ship's operating status information. The analog signal interface is connected to the main control module for receiving the ship engine's operating data, enabling the remote control security module to control the start and stop of the ship engine and adjust its speed and load status based on the operating data.

6. The low-speed ship control system according to claim 1, characterized in that, It also includes a dual-fuel control module; The dual-fuel control module is communicatively connected to the main control module and is used to receive the ship's operating status information and adjust the fuel injection quantity of the dual-fuel injector according to the ship's operating status information.

7. The low-speed ship control system according to claim 6, characterized in that, It also includes a display module, which is communicatively connected to the main control module and the dual-fuel control module, and is used to receive and display the ship's operating status information and dual-fuel injection parameters.

8. The low-speed ship control system according to claim 6, characterized in that, The dual-fuel control module includes a monitoring unit, which is communicatively connected to the main control module; The monitoring unit is used to monitor the operating status information of the dual-fuel engine and transmit the operating status information of the dual-fuel engine to the main control module; The main control module is used to control the start and stop of the dual-fuel engine based on the operating status information of the dual-fuel engine.

9. The low-speed ship control system according to claim 1, characterized in that, It also includes an interactive module; The interactive module is communicatively connected to the ship's central control console and the main control module. It is used to receive control commands from the ship's central control console, filter the control commands according to the execution function of the main control module, and transmit the filtered matching control commands to the main control module. The main control module controls the ship according to the matching control commands.

10. The low-speed ship control system according to claim 1, characterized in that, The low-speed ship control system is applicable to ship operating speeds ranging from 9.26 km / h to 14.82 km / h.

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