A control method and related device for dual starting of a diesel engine

Abstract

This application discloses a control method and related device for dual starting of a diesel engine, relating to the field of diesel engine control technology. The method includes: responding to a starting command and determining a starting mode based on the diesel engine's operating state; performing a power analysis on the starter motor of the diesel engine based on the starting mode to determine a target starter motor to be operated; and controlling the target starter motor to enter the operating state. This application determines a starting mode matching the operating conditions based on the diesel engine's operating state, and then performs power analysis on the electric starter motor and mechanical starter motor respectively based on this starting mode to determine the target starter motor to be operated, further controlling the target starter motor to enter the operating state. This allows for precise matching of the optimal starting combination for the diesel engine without human intervention, improving the starting reliability and success rate of the diesel engine under extreme weather conditions, and ensuring efficient and stable operation of the diesel engine under various complex operating conditions.

Description

Technical Field

[0001] This application relates to the field of diesel engine control technology, and in particular to a control method and related device for dual starting of a diesel engine. Background Technology

[0002] As the core power source for ships, engineering machinery and generator sets, the starting reliability of diesel engines is directly related to the normal operation and safety of the equipment.

[0003] Currently, marine diesel engines are equipped with both electric starter motors and mechanical starter motors (usually pneumatic motors) to meet different operating conditions. In routine operation, operators typically prioritize using the electric starter motor; only in special circumstances such as electric starter motor failure or power outages is the mechanical starter motor switched to manually. However, this relies heavily on manual judgment and switching, making it difficult to automatically identify and execute reliable starting methods under complex conditions such as low temperatures, thus limiting the success rate of starting in harsh environments. Summary of the Invention

[0004] In view of the above problems, this application provides a control method and related device for dual starting of a diesel engine, so as to automatically select the optimal starting mode to improve starting reliability and success rate. The specific solution is as follows:

[0005] The first aspect of this application provides a control method for dual starting of a diesel engine, the control method for dual starting of a diesel engine comprising:

[0006] Responding to the start command, the start mode is determined based on the operating status of the diesel engine;

[0007] Based on the starting mode, a power analysis is performed on the starter of the diesel engine to determine the target starter to be operated;

[0008] Control the target starter to enter the working state.

[0009] In one possible implementation, determining the starting mode based on the operating state of the diesel engine includes:

[0010] The engine oil temperature of the diesel engine and the ambient temperature of the area where the diesel engine is located are obtained.

[0011] If the engine oil temperature is less than the corresponding first temperature threshold, the ambient temperature is less than the corresponding second temperature threshold, and the temperature difference between the engine oil temperature and the ambient temperature is less than the corresponding temperature difference threshold, the starting mode is determined to be a dual starting mode.

[0012] If the engine oil temperature is greater than or equal to the first temperature threshold, or the ambient temperature is greater than or equal to the second temperature threshold, or the temperature difference between the engine oil temperature and the ambient temperature is greater than or equal to the temperature difference threshold, the starting mode is determined to be a single start mode.

[0013] In one possible implementation, the step of performing a dynamic analysis of the diesel engine's starter based on the starting mode to determine the target starter to be operated includes:

[0014] When the starting mode is dual starting mode, the first battery voltage of the electric starter motor and the first gas cylinder pressure of the mechanical starter motor are obtained;

[0015] If the voltage of the first battery is greater than or equal to the corresponding first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the corresponding first pressure threshold, the electric starter motor and the mechanical starter motor are used as the target starter motor.

[0016] If the voltage of the first battery is less than the first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the first pressure threshold, the mechanical starter motor will be used as the target starter.

[0017] If the voltage of the first battery is greater than or equal to the first voltage threshold and the pressure of the first gas cylinder is less than the first pressure threshold, the electric starter motor will be used as the target starter.

[0018] In one possible implementation, the step of performing a dynamic analysis of the diesel engine's starter based on the starting mode to determine the target starter to be operated includes:

[0019] When the starting mode is single start mode, determine the main starter motor and the standby starter motor among the electric starter motor and the mechanical starter motor;

[0020] The target starter motor is determined by performing power analysis on the main starter motor and the backup starter motor in sequence.

[0021] In one possible implementation, determining the target starter motor by sequentially performing power analysis on the primary starter motor and the backup starter motor includes:

[0022] When the main starter motor is the electric starter motor and the backup starter motor is the mechanical starter motor, the second battery voltage of the electric starter motor is obtained;

[0023] If the voltage of the second battery is greater than or equal to the corresponding second voltage threshold, the electric starter motor will be used as the target starter motor.

[0024] If the voltage of the second battery is less than the second voltage threshold, obtain the second gas cylinder pressure of the mechanical starter motor;

[0025] If the pressure of the second gas cylinder is greater than or equal to the corresponding second pressure threshold, the mechanical starter motor is used as the target starter.

[0026] In one possible implementation, determining the target starter motor by sequentially performing power analysis on the primary starter motor and the backup starter motor further includes:

[0027] When the main starter motor is the mechanical starter motor and the backup starter motor is the electric starter motor, the pressure of the third gas cylinder of the mechanical starter motor is obtained;

[0028] If the pressure of the third gas cylinder is greater than or equal to the second pressure threshold, the mechanical starter motor will be used as the target starter.

[0029] If the pressure of the third gas cylinder is less than the second pressure threshold, obtain the voltage of the third battery of the electric starter motor;

[0030] If the voltage of the third battery is greater than or equal to the second voltage threshold, the electric starter motor is used as the target starter.

[0031] A second aspect of this application provides a control device for dual starting of a diesel engine, the control device comprising:

[0032] The starting mode determination module is used to respond to the starting command and determine the starting mode according to the operating status of the diesel engine;

[0033] The starter control module is used to perform power analysis on the starter of the diesel engine based on the starting mode to determine the target starter to be operated; and to control the target starter to enter the working state.

[0034] A third aspect of this application provides a computer program product including computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the control method for dual starting of a diesel engine as described in the first aspect or any implementation thereof.

[0035] A fourth aspect of this application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0036] The memory is used to store computer programs;

[0037] The processor is used to execute the computer program so that the electronic device can implement the control method for dual starting of a diesel engine as described in the first aspect or any implementation thereof.

[0038] The fifth aspect of this application provides a computer storage medium carrying one or more computer programs, which, when executed by an electronic device, enable the electronic device to implement the control method for dual starting of a diesel engine as described in the first aspect or any implementation thereof.

[0039] By utilizing the above technical solution, this application provides a control method and related device for dual starting of a diesel engine, comprising: responding to a starting command and determining a starting mode based on the operating state of the diesel engine; performing power analysis on the starter motor of the diesel engine based on the starting mode to determine the target starter motor to be operated; and controlling the target starter motor to enter the working state. This application determines a starting mode matching the operating conditions based on the operating state of the diesel engine, and then performs power analysis on the electric starter motor and mechanical starter motor respectively based on the starting mode to determine the target starter motor to be operated, and further controls the target starter motor to enter the working state. This allows for precise matching of the optimal starting combination for the diesel engine without human intervention, improving the starting reliability and success rate of the diesel engine under extreme weather conditions, and ensuring the efficient and stable operation of the diesel engine under various complex operating conditions. Attached Figure Description

[0040] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0041] Figure 1 A schematic flowchart illustrating a control method for dual starting of a diesel engine provided in an embodiment of this application;

[0042] Figure 2 This is a partial flowchart illustrating a control method for dual starting of a diesel engine provided in an embodiment of this application;

[0043] Figure 3 This is another schematic flowchart of a control method for dual starting of a diesel engine provided in an embodiment of this application;

[0044] Figure 4 This is another schematic flowchart of a control method for dual starting of a diesel engine provided in an embodiment of this application;

[0045] Figure 5 This is another schematic flowchart of a control method for dual starting of a diesel engine provided in an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the structure of a control device for dual starting of a diesel engine provided in an embodiment of this application;

[0047] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0048] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0049] As will be known to those skilled in the art, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0050] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0051] Currently, marine diesel engines are typically equipped with both electric and mechanical starter motors. However, the operating mode needs to be manually switched before use, making it difficult to automatically select the optimal starting strategy based on actual operating conditions, thus increasing operating costs and maintenance difficulty. Furthermore, in low-temperature environments, the cylinder temperature is low, making it more difficult for the diesel engine to ignite and requiring higher starting speeds. If only one starter motor is working while the other is idle, it not only wastes hardware resources but also easily leads to starting failures due to performance degradation of the single power source at extreme low temperatures.

[0052] To address the aforementioned problems, this application provides a control method for dual starting of a diesel engine. The control method for dual starting of a diesel engine according to this application will be described in detail below with reference to the accompanying drawings.

[0053] See Figure 1 , Figure 1 This is a flowchart illustrating a control method for dual starting of a diesel engine, provided as an embodiment of this application. Figure 1 As shown in the embodiment of this application, a control method for dual starting of a diesel engine may include steps S101 to S103, which are described in detail below.

[0054] S101 responds to the start command and determines the start mode based on the diesel engine's operating status.

[0055] In this embodiment, the start command is a trigger command issued by the user through the start button on the diesel engine control panel or a remote terminal to trigger the diesel engine to start. In response to the start command, the operating status of the diesel engine is determined. This operating status characterizes the working environment and operating conditions of the diesel engine, and may include parameters such as the ambient temperature and oil temperature of the area where the diesel engine is located.

[0056] Furthermore, the starting mode of the diesel engine is determined based on its operating status: either single-start or dual-start mode. Specifically, when extremely low ambient temperatures are detected and the engine oil has not been sufficiently preheated (i.e., the temperature difference between the engine oil and ambient temperature is small), it is considered a severe starting condition, and the starting mode is determined to be dual-start mode, simultaneously activating both the electric starter motor and the mechanical starter motor to increase starting torque. Conversely, under normal temperature conditions, the starting mode is determined to be single-start mode, activating either the electric starter motor or the mechanical starter motor to save energy and reduce mechanical wear. By automatically determining the starting mode based on the diesel engine's operating status, it can adapt to different environmental conditions and avoid starting failures caused by human error.

[0057] In one possible implementation, by judging the engine oil temperature and ambient temperature, it is ensured that the starting power is enhanced only in low-temperature environments. Furthermore, by combining the judgment of temperature difference thresholds, it accurately distinguishes between normal cold-start preheating and emergency starting without preheating. When the temperature difference between the engine oil and ambient temperature is small, it can be determined that the diesel engine has not completed the preheating process but urgently needs to start. In this case, the extra torque provided by the dual-start mode can effectively compensate for the starting difficulties caused by high oil viscosity and low cylinder temperature. Conversely, when the temperature difference between the engine oil and ambient temperature is large, it can be determined that the diesel engine has reached a good thermal state, and the single-start mode is sufficient to complete the task. This not only improves the starting success rate of the diesel engine in extreme low-temperature environments but also avoids the misuse of the dual-start function when unnecessary, balancing starting reliability and economy.

[0058] See Figure 2 , Figure 2 This is a partial flowchart illustrating a control method for dual starting of a diesel engine, provided as an embodiment of this application. Figure 2 As shown in the embodiment of this application, a control method for dual starting of a diesel engine is provided. In step S101, "determine the starting mode according to the operating state of the diesel engine", which may include the following steps S201 to S203. These steps are described in detail below.

[0059] S201 obtains the engine oil temperature of the diesel engine and the ambient temperature of the area where the diesel engine is located.

[0060] In this embodiment, the engine oil temperature is the real-time temperature of the lubricating oil in the diesel engine lubrication system, which characterizes the current thermal state of the diesel engine and the fluidity of the engine oil; the ambient temperature is the air temperature of the area where the diesel engine is located. Specifically, the engine oil temperature can be acquired by a temperature sensor installed on the diesel engine oil pan or main oil passage; the ambient temperature can be measured by an ambient temperature sensor installed around the diesel engine or at the vehicle's air intake. By simultaneously acquiring the engine oil temperature and the ambient temperature, the starting thermal conditions of the diesel engine can be accurately assessed, thereby determining whether dual power assistance is required.

[0061] S202, if the engine oil temperature is less than the corresponding first temperature threshold, the ambient temperature is less than the corresponding second temperature threshold, and the temperature difference between the engine oil temperature and the ambient temperature is less than the corresponding temperature difference threshold, the starting mode is determined to be dual starting mode.

[0062] In this embodiment, the first temperature threshold is a preset low-temperature critical value for engine oil, used to characterize the temperature point at which the fluidity of engine oil is severely reduced; the second temperature threshold is a preset low-temperature critical value for the environment, used to characterize the temperature point at which the external environment significantly hinders the ignition of the diesel engine; and the temperature difference threshold is a preset upper limit of the temperature difference between engine oil and the environment, used to identify whether the diesel engine is in an emergency avoidance state or has not been sufficiently preheated.

[0063] Specifically, if the engine oil temperature is below the first temperature threshold, the ambient temperature is below the corresponding second temperature threshold, and the temperature difference between the engine oil temperature and the ambient temperature is less than the corresponding temperature difference threshold, it can be determined that the diesel engine is not only in an extremely low-temperature environment, but the engine itself has also not reached a suitable starting thermal state. In this case, a single starter motor may not be able to provide sufficient driving speed, so the starting mode is determined to be a dual-start mode. In dual-start mode, both the electric starter motor and the mechanical starter motor are activated simultaneously, using dual power sources to overcome the high frictional resistance at low temperatures and ensure that the diesel engine ignites smoothly.

[0064] S203, if the oil temperature is greater than or equal to the first temperature threshold, or the ambient temperature is greater than or equal to the second temperature threshold, or the temperature difference between the oil temperature and the ambient temperature is greater than or equal to the temperature difference threshold, the starting mode is determined to be single start mode.

[0065] In this embodiment, if the engine oil temperature is greater than or equal to a first temperature threshold, or the ambient temperature is greater than or equal to a second temperature threshold, or the temperature difference between the engine oil temperature and the ambient temperature is greater than or equal to a temperature difference threshold, it is determined that the current operating condition does not require dual-power assistance, and the starting mode is determined to be a single-start mode. In single-start mode, only one of the electric starter motor and the mechanical starter motor is activated. This allows for flexible adaptation to various non-extreme operating conditions, avoiding the forced activation of both motors when they are not needed, thereby reducing ineffective losses in the starter motor and power system, extending the service life of components, and preventing the risk of battery depletion or discharge due to over-starting.

[0066] S102, based on the starting mode, performs a power analysis on the starter of the diesel engine to determine the target starter to be operated.

[0067] In this embodiment, the starter includes an electric starter motor and a mechanical starter motor. The electric starter motor is driven by electrical energy provided by a battery, while the mechanical starter motor is driven by air pressure provided by a compressed air cylinder. Candidate starters are determined from the electric and mechanical starter motors based on the starting mode. Then, a power analysis is performed on each candidate starter motor to assess its power reserve status, thereby determining whether the candidate starter motor is usable, and thus identifying the target starter motor.

[0068] Specifically, in dual-start mode, the battery voltage of the electric starter motor and the gas cylinder pressure of the mechanical starter motor are obtained. The availability of the electric starter motor is determined based on the battery voltage, and the availability of the mechanical starter motor is determined based on the gas cylinder pressure. This determines at least one available starter motor as the target starter motor. In single-start mode, one available starter motor is selected from the electric starter motor and the mechanical starter motor as the target starter motor.

[0069] Based on this, at least one starter motor with available power reserve is selected from both electric and mechanical starter motors as the target starter motor. This ensures that only starter motors with sufficient power reserve are activated, effectively avoiding idling or stalling during startup due to insufficient power or low air pressure, thereby improving starting reliability.

[0070] In one possible implementation, under dual-start mode, the power reserves of both the electric and mechanical starter motors are diagnosed in real time. Synchronous dual-motor operation to maximize starting torque is only executed when both meet minimum operating thresholds. If the power reserve of either starter is insufficient, the system immediately and automatically reverts to single-start mode, utilizing the power reserve of the other starter to maintain basic starting functionality. This not only improves the starting robustness of the diesel engine under complex operating conditions but also prevents the entire starting process from failing due to a single starter malfunction through fault isolation. Furthermore, it provides users with fault indications, facilitating rapid troubleshooting and maintenance.

[0071] See Figure 3 , Figure 3 This is another schematic flowchart illustrating a control method for dual starting of a diesel engine provided in an embodiment of this application. (See attached diagram.) Figure 3 As shown in the embodiment of this application, a control method for dual starting of a diesel engine is provided. In step S102, "performing a power analysis of the starter motor of the diesel engine based on the starting mode to determine the target starter motor to be operated", the following steps S301 to S304 may be included. These steps are described in detail below.

[0072] S301, when the starting mode is dual starting mode, obtains the first battery voltage of the electric starter motor and the first gas cylinder pressure of the mechanical starter motor.

[0073] In this embodiment, the battery voltage is the output voltage of the battery connected to the electric starter motor, which can be measured by voltage sensors installed at the positive and negative terminals of the battery; the gas cylinder pressure is the gas pressure of the gas tank connected to the mechanical starter motor, which can be measured by a pressure sensor installed before the gas cylinder outlet valve. The battery voltage characterizes the electrical energy reserve of the electric starter motor; if the voltage is too low, the electric starter motor may lack sufficient torque to drive the diesel engine. The gas cylinder pressure characterizes the pneumatic energy reserve of the mechanical starter motor; if the pressure is too low, the pneumatic starter motor will not be able to operate normally.

[0074] In dual-start mode, the first battery voltage of the electric starter motor and the first gas cylinder pressure of the mechanical starter motor at the current moment are obtained simultaneously to assess the instantaneous power reserves of the electric starter motor and the mechanical starter motor.

[0075] S302, if the voltage of the first battery is greater than or equal to the corresponding first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the corresponding first pressure threshold, the electric starter motor and the mechanical starter motor are used as the target starter motors.

[0076] In this embodiment, the first voltage threshold is a critical value calibrated for the electric starter motor based on the minimum driving power required for the diesel engine to start successfully in a low-temperature environment; the first pressure threshold is a critical value calibrated for the mechanical starter motor based on the minimum driving power required for the diesel engine to start successfully in a low-temperature environment.

[0077] If the voltage of the first battery is greater than or equal to the corresponding first voltage threshold, and the pressure of the first gas cylinder is greater than or equal to the corresponding first pressure threshold, the electric starter motor and the mechanical starter motor are used as the target starters. When the electric starter motor and the mechanical starter motor are put into operation, the electric starter relay of the electric starter motor and the air circuit solenoid valve of the mechanical starter motor are simultaneously closed, allowing the electric starter motor and the mechanical starter motor to act simultaneously on the diesel engine flywheel ring gear, generating superimposed driving torque. This significantly improves the starting success rate of the diesel engine under extreme low-temperature conditions, avoiding the risk of stalling due to excessive load on a single starter motor.

[0078] S303, if the voltage of the first battery is less than the first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the first pressure threshold, the mechanical starter motor is used as the target starter.

[0079] In this embodiment, if the voltage of the first battery is less than a first voltage threshold, it can be determined that the battery power is insufficient to support the normal output rated torque of the electric starter motor. Forcing its use may cause the voltage to drop further or even damage the battery. Meanwhile, if the pressure of the first gas cylinder is greater than or equal to a first pressure threshold, it indicates that the mechanical starter motor has sufficient compressed air reserves. Therefore, the mechanical starter motor can be used as the target starter. At this time, the electric starter motor's electric starter relay is disconnected, and a low battery voltage fault message is sent to the user terminal. When the mechanical starter motor enters the working state, the air circuit solenoid valve of the mechanical starter motor is closed, causing the mechanical starter motor to act on the diesel engine flywheel teeth to generate drag torque. This effectively avoids starting failure due to insufficient electrical energy, ensuring that the diesel engine can still start using an air supply even in the event of partial system failure.

[0080] S304, if the voltage of the first battery is greater than or equal to the first voltage threshold and the pressure of the first gas cylinder is less than the first pressure threshold, the electric starter motor is used as the target starter.

[0081] In this embodiment, if the pressure of the first gas cylinder is less than a first pressure threshold, it can be determined that the compressed air reserve of the mechanical starter motor is insufficient and cannot drive the mechanical starter motor to the necessary speed; while at this time, if the voltage of the first battery is greater than or equal to the first voltage threshold, it can be determined that the battery power of the electric starter motor is sufficient. Therefore, the electric starter motor can be used as the target starter. At this time, the air circuit solenoid valve of the mechanical starter motor is shut off, and a low gas cylinder pressure fault prompt is sent to the user terminal. When the electric starter motor is controlled to enter the working state, the electric starter relay of the electric starter motor is closed, causing the electric starter motor to act on the diesel engine flywheel teeth to generate drag torque. This ensures the availability of the diesel engine in abnormal situations such as gas source leakage or insufficient gas filling.

[0082] In one possible implementation, efficient resource scheduling in single-start mode can be achieved by determining the roles of the primary and backup starter motors and combining this with sequential power analysis. Furthermore, by responding to user preference calibration, it can flexibly adapt to maintenance conditions in different scenarios (such as convenient charging or refueling). Through primary-backup power analysis, the primary starter motor ensures rapid response under normal conditions, while the backup starter motor provides redundancy in case of primary starter motor failure, ensuring reliable starting of the diesel engine whenever a single power source is available.

[0083] See Figure 4 , Figure 4 This is another schematic flowchart illustrating a control method for dual starting of a diesel engine provided in an embodiment of this application. (See attached diagram.) Figure 4 As shown in the embodiment of this application, a control method for dual starting of a diesel engine is provided. In step S102, "performing a power analysis of the starter motor of the diesel engine based on the starting mode to determine the target starter motor to be operated", the following steps S401 to S402 may be included. These steps are described in detail below.

[0084] S401, when the starting mode is single start mode, determine the main starter motor and the standby starter motor among the electric starter motor and the mechanical starter motor.

[0085] In this embodiment, the main starter motor is the starter motor that is preferentially activated under normal operating conditions. It can be configured by factory default or according to user preferences. For example, users may prefer to use an electric starter motor that is easy to charge and maintain, or a mechanical starter motor that is easy to replenish with air. The backup starter motor is the starter motor that is activated when the main starter motor fails to work.

[0086] In single-start mode, depending on the configuration, one of the electric starter motor and the mechanical starter motor is designated as the primary starter motor and the other as the backup starter motor.

[0087] S402, by performing power analysis on the main starter motor and the standby starter motor in sequence, the target starter motor is determined.

[0088] In this embodiment, the power analysis of the main starter motor is first performed. If the power parameters of the main starter motor reach the corresponding minimum starting requirement threshold (such as sufficient battery voltage or gas cylinder pressure), the main starter motor is directly used as the target starter motor. If the power parameters of the main starter motor do not reach the corresponding minimum starting requirement threshold, the power analysis of the standby starter motor is performed. If the power parameters of the standby starter motor reach the corresponding minimum starting requirement threshold, the standby starter motor is used as the target starter motor. Otherwise, a starting failure is reported.

[0089] In one possible implementation, in a scenario where the electric starter motor is the primary starter motor and the mechanical starter motor is the backup starter motor, the power analysis of the electric starter motor and the mechanical starter motor is performed sequentially. This not only conforms to the convenient charging habits of most users and optimizes the starting efficiency under normal operating conditions, but also allows for automatic and rapid switching to the mechanical starter motor when the electric starter motor fails, ensuring reliable starting of the diesel engine.

[0090] See Figure 5 , Figure 5 This is another schematic flowchart illustrating a control method for dual starting of a diesel engine provided in an embodiment of this application. (See attached diagram.) Figure 5 As shown in the embodiment of this application, a control method for dual starting of a diesel engine is provided. In step S402, "by performing power analysis on the main starter motor and the standby starter motor in sequence to determine the target starter", the following steps S501 to S504 may be included. These steps are described in detail below.

[0091] S501: When the main starter motor is an electric starter motor and the standby starter motor is a mechanical starter motor, the second battery voltage of the electric starter motor is obtained.

[0092] In this embodiment of the application, when the main starter motor is an electric starter motor and the backup starter motor is a mechanical starter motor, the second battery voltage of the electric starter motor at the current moment is obtained.

[0093] S502, if the voltage of the second battery is greater than or equal to the corresponding second voltage threshold, the electric starter motor is used as the target starter.

[0094] In this embodiment, the second voltage threshold is a critical value calibrated based on the minimum driving power required for a diesel engine to start successfully in a low-temperature environment. If the second battery voltage is greater than or equal to the second voltage threshold, it indicates that the battery has sufficient charge and the electric starter motor has the power conditions for normal operation, thus determining the electric starter motor as the target starter. At this time, the air circuit solenoid valve of the mechanical starter motor is disconnected. When controlling the electric starter motor to enter the working state, the electric starter relay of the electric starter motor is closed, causing the electric starter motor to act on the flywheel teeth of the diesel engine to generate driving torque.

[0095] S503, if the voltage of the second battery is less than the second voltage threshold, obtain the pressure of the second gas cylinder of the mechanical starter motor.

[0096] In this embodiment of the application, if the voltage of the second battery is less than the second voltage threshold, it indicates that the battery power is insufficient and the electric starter motor cannot work reliably. At this time, the mechanical starter motor is used as the power analysis object to obtain the pressure of the second gas cylinder of the mechanical starter motor at the current moment.

[0097] S504, if the pressure of the second gas cylinder is greater than or equal to the corresponding second pressure threshold, the mechanical starter motor will be used as the target starter.

[0098] In this embodiment, if the pressure of the second gas cylinder is greater than or equal to the corresponding second pressure threshold, it indicates that the compressed air reserve is sufficient and the mechanical starter motor has the ability to drive the diesel engine, thus determining the mechanical starter motor as the target starter. At this time, the electric start relay of the electric starter motor is disconnected, and a low battery voltage fault prompt is sent to the user terminal. When controlling the mechanical starter motor to enter the working state, the air circuit solenoid valve of the mechanical starter motor is closed, causing the mechanical starter motor to act on the diesel engine flywheel teeth to generate driving torque. This ensures that the diesel engine can still start successfully even under extreme conditions of a depleted battery.

[0099] In addition, if the pressure of the second gas cylinder is less than the corresponding second pressure threshold, the electric start relay of the electric start motor is cut off, the air circuit solenoid valve of the mechanical start motor is cut off, and a fault prompt indicating low battery voltage and low gas cylinder pressure is sent to the user terminal at the same time.

[0100] In one possible implementation, in a scenario where the electric starter motor is the backup starter motor and the mechanical starter motor is the primary starter motor, power analysis is performed sequentially on both the mechanical and electric starter motors. This allows for flexible adjustment of the starting strategy based on the user's resource allocation preferences (e.g., prioritizing gas use in situations with unstable power supply). To this end, the diesel engine dual-start control method provided in this application embodiment further includes the following steps:

[0101] When the primary starter motor is a mechanical starter motor and the backup starter motor is an electric starter motor, the pressure of the third gas cylinder of the mechanical starter motor is obtained; if the pressure of the third gas cylinder is greater than or equal to the second pressure threshold, the mechanical starter motor is used as the target starter motor; if the pressure of the third gas cylinder is less than the second pressure threshold, the voltage of the third battery of the electric starter motor is obtained; if the voltage of the third battery is greater than or equal to the second voltage threshold, the electric starter motor is used as the target starter motor.

[0102] In this embodiment, when the primary starter motor is a mechanical starter motor and the backup starter motor is an electric starter motor, the pressure of the third gas cylinder of the mechanical starter motor at the current moment is obtained. If the pressure of the third gas cylinder is greater than or equal to the second pressure threshold, it indicates that the compressed air reserve is sufficient, and the mechanical starter motor has the ability to drive the diesel engine, thus determining the mechanical starter motor as the target starter motor. At this time, the electric starter relay of the electric starter motor is disconnected. When controlling the mechanical starter motor to enter the working state, the air circuit solenoid valve of the mechanical starter motor is closed, so that the mechanical starter motor acts on the flywheel teeth of the diesel engine to generate driving torque.

[0103] If the pressure of the third gas cylinder is less than the second pressure threshold, it indicates that the compressed air reserve is insufficient to drive the mechanical starter motor to operate normally. At this time, the electric starter motor is taken as the power analysis object, and the voltage of the third battery of the electric starter motor at the current moment is obtained.

[0104] If the voltage of the third battery is greater than or equal to the second voltage threshold, it indicates that the battery has sufficient charge and the electric starter motor has the power conditions for normal operation, thus identifying the electric starter motor as the target starter. At this time, the air circuit solenoid valve of the mechanical starter motor is shut off, and a low gas cylinder pressure fault message is sent to the user terminal. When controlling the electric starter motor to enter the working state, the electric starter motor's electric start relay is closed, causing the electric starter motor to act on the diesel engine flywheel teeth to generate driving torque.

[0105] If the voltage of the third battery is lower than the second voltage threshold, the electric starter relay of the electric starter motor is disconnected, the air solenoid valve of the mechanical starter motor is disconnected, and a fault message indicating low battery voltage and low gas cylinder pressure is sent to the user terminal at the same time.

[0106] S103, control the target starter to enter the working state.

[0107] In this embodiment, after determining the target starter, a drive signal can be sent to the actuator of the target starter to connect to the power or air supply and drive the diesel engine flywheel to rotate. Specifically, when the target starter includes an electric starter motor, the electric starter relay of the electric starter motor is closed, allowing battery current to flow to the electric starter motor; additionally, when the target starter includes a mechanical starter motor, the air circuit solenoid valve of the mechanical starter motor is closed, allowing compressed air to enter the mechanical starter motor. This enables the diesel engine crankshaft to obtain sufficient driving speed, thereby achieving ignition and starting.

[0108] Based on the above description, the diesel engine dual-start control method provided in this application responds to the start command by first intelligently determining whether the current operating condition belongs to a low-temperature emergency scenario requiring high torque drive based on multi-dimensional operating status parameters such as the diesel engine oil temperature, ambient temperature, and temperature difference. This allows for adaptively establishing either a dual-start mode or a single-start mode. Furthermore, differentiated power analysis is performed for different start modes: In dual-start mode, the battery voltage of the electric starter motor and the gas cylinder pressure of the mechanical starter motor are monitored simultaneously. Only when both power reserves meet preset thresholds is the dual motor driven to work together to provide maximum starting torque. If either power is insufficient, it automatically degrades to single-motor operation, avoiding the risk of failure due to forced dual-start. In single-start mode, the power parameters of the primary and backup starters are diagnosed sequentially according to a preset primary / backup priority order, achieving seamless fault transfer and switching. This enables the diesel engine to accurately determine the optimal starting combination matching the current power conditions and environmental requirements without manual intervention, thereby solving the problems of starting difficulties and resource idleness caused by the inability to automatically coordinate dual power sources in low-temperature environments. In addition, the embodiments of this application can improve the starting reliability and success rate of diesel engines under extreme weather conditions, and ensure the efficient and stable operation of diesel engines under various complex working conditions.

[0109] The above describes a control method for dual starting of a diesel engine provided by the embodiments of this application. The following will describe the apparatus for performing the above control method for dual starting of a diesel engine.

[0110] See Figure 6 , Figure 6 This is a schematic diagram of a control device for dual starting of a diesel engine, provided as an embodiment of this application. Figure 6 As shown in the embodiment of this application, a control device for dual starting of a diesel engine includes:

[0111] The starting mode determination module 601 is used to respond to the starting command and determine the starting mode according to the operating status of the diesel engine;

[0112] The starter control module 602 is used to perform power analysis on the starter of the diesel engine based on the starting mode to determine the target starter to be worked; and to control the target starter to enter the working state.

[0113] In one possible implementation, the starting mode determination module 601, used to determine the starting mode based on the operating state of the diesel engine, is specifically used for:

[0114] The engine oil temperature and the ambient temperature of the area where the diesel engine is located are obtained. If the engine oil temperature is lower than the corresponding first temperature threshold, the ambient temperature is lower than the corresponding second temperature threshold, and the temperature difference between the engine oil temperature and the ambient temperature is less than the corresponding temperature difference threshold, the starting mode is determined to be dual starting mode. If the engine oil temperature is greater than or equal to the first temperature threshold, or the ambient temperature is greater than or equal to the second temperature threshold, or the temperature difference between the engine oil temperature and the ambient temperature is greater than or equal to the temperature difference threshold, the starting mode is determined to be single starting mode.

[0115] In one possible implementation, a starter control module 602, used for performing dynamic analysis of the diesel engine's starter based on the starting mode to determine the target starter to be operated, is specifically used for:

[0116] When the starting mode is dual starting mode, the first battery voltage of the electric starter motor and the first gas cylinder pressure of the mechanical starter motor are obtained; if the first battery voltage is greater than or equal to the corresponding first voltage threshold and the first gas cylinder pressure is greater than or equal to the corresponding first pressure threshold, the electric starter motor and the mechanical starter motor are used as target starters; if the first battery voltage is less than the first voltage threshold and the first gas cylinder pressure is greater than or equal to the first pressure threshold, the mechanical starter motor is used as the target starter; if the first battery voltage is greater than or equal to the first voltage threshold and the first gas cylinder pressure is less than the first pressure threshold, the electric starter motor is used as the target starter.

[0117] In one possible implementation, a starter control module 602, used for performing dynamic analysis of the diesel engine's starter based on the starting mode to determine the target starter to be operated, is specifically used for:

[0118] When the starting mode is single start mode, determine the main starter motor and the standby starter motor among the electric starter motor and the mechanical starter motor; determine the target starter motor by performing power analysis on the main starter motor and the standby starter motor in sequence.

[0119] In one possible implementation, the starter control module 602, used to determine the target starter by sequentially performing dynamic analysis on the primary starter motor and the standby starter motor, is specifically used for:

[0120] When the primary starter motor is an electric starter motor and the backup starter motor is a mechanical starter motor, the second battery voltage of the electric starter motor is obtained; if the second battery voltage is greater than or equal to the corresponding second voltage threshold, the electric starter motor is used as the target starter motor; if the second battery voltage is less than the second voltage threshold, the second gas cylinder pressure of the mechanical starter motor is obtained; if the second gas cylinder pressure is greater than or equal to the corresponding second pressure threshold, the mechanical starter motor is used as the target starter motor.

[0121] In one possible implementation, the starter control module 602, used to determine the target starter by sequentially performing dynamic analysis on the primary starter motor and the standby starter motor, is further used to:

[0122] When the primary starter motor is a mechanical starter motor and the backup starter motor is an electric starter motor, the pressure of the third gas cylinder of the mechanical starter motor is obtained; if the pressure of the third gas cylinder is greater than or equal to the second pressure threshold, the mechanical starter motor is used as the target starter motor; if the pressure of the third gas cylinder is less than the second pressure threshold, the voltage of the third battery of the electric starter motor is obtained; if the voltage of the third battery is greater than or equal to the second voltage threshold, the electric starter motor is used as the target starter motor.

[0123] It should be noted that the detailed functions of each module in the embodiments of this application can be found in the corresponding disclosure of the above-mentioned control method embodiment for dual starting of diesel engine, and will not be repeated here.

[0124] This application also provides an electronic device in its embodiments. See [link to relevant documentation]. Figure 7 , Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device in this embodiment may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0125] like Figure 7 As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage device 708 into a random access memory (RAM) 703. When the electronic device is powered on, the RAM 703 also stores various programs and data required for the operation of the electronic device. The processing unit 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0126] Typically, the following devices can be connected to I / O interface 705: input devices 706 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 707 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 708 including, for example, memory cards, hard drives, etc.; and communication devices 709. Communication device 709 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 7Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have alternatively.

[0127] This application also provides a computer program product, including computer-readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the diesel engine dual-start control methods provided in this application.

[0128] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any of the diesel engine dual-start control methods provided in this application.

[0129] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0130] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0131] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product.

[0132] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

Claims

1. A control method for dual starting of a diesel engine, characterized in that, The control method for dual starting of the diesel engine includes: Responding to the start command, the start mode is determined based on the operating status of the diesel engine; Based on the starting mode, a power analysis is performed on the starter of the diesel engine to determine the target starter to be operated; Control the target starter to enter the working state.

2. The control method for dual starting of a diesel engine according to claim 1, characterized in that, The method of determining the starting mode based on the operating status of the diesel engine includes: The engine oil temperature of the diesel engine and the ambient temperature of the area where the diesel engine is located are obtained. If the engine oil temperature is less than the corresponding first temperature threshold, the ambient temperature is less than the corresponding second temperature threshold, and the temperature difference between the engine oil temperature and the ambient temperature is less than the corresponding temperature difference threshold, the starting mode is determined to be a dual starting mode. If the engine oil temperature is greater than or equal to the first temperature threshold, or the ambient temperature is greater than or equal to the second temperature threshold, or the temperature difference between the engine oil temperature and the ambient temperature is greater than or equal to the temperature difference threshold, the starting mode is determined to be a single start mode.

3. The control method for dual starting of a diesel engine according to claim 1, characterized in that, The step of performing a power analysis on the starter motor of the diesel engine based on the starting mode to determine the target starter motor to be operated includes: When the starting mode is dual starting mode, the first battery voltage of the electric starter motor and the first gas cylinder pressure of the mechanical starter motor are obtained; If the voltage of the first battery is greater than or equal to the corresponding first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the corresponding first pressure threshold, the electric starter motor and the mechanical starter motor are used as the target starter motor. If the voltage of the first battery is less than the first voltage threshold and the pressure of the first gas cylinder is greater than or equal to the first pressure threshold, the mechanical starter motor will be used as the target starter. If the voltage of the first battery is greater than or equal to the first voltage threshold and the pressure of the first gas cylinder is less than the first pressure threshold, the electric starter motor will be used as the target starter.

4. The control method for dual starting of a diesel engine according to claim 1, characterized in that, The step of performing a power analysis on the starter motor of the diesel engine based on the starting mode to determine the target starter motor to be operated includes: When the starting mode is single start mode, determine the main starter motor and the standby starter motor among the electric starter motor and the mechanical starter motor; The target starter motor is determined by performing power analysis on the main starter motor and the backup starter motor in sequence.

5. The control method for dual starting of a diesel engine according to claim 4, characterized in that, The step of determining the target starter motor by sequentially performing power analysis on the main starter motor and the backup starter motor includes: When the main starter motor is the electric starter motor and the backup starter motor is the mechanical starter motor, the second battery voltage of the electric starter motor is obtained; If the voltage of the second battery is greater than or equal to the corresponding second voltage threshold, the electric starter motor will be used as the target starter motor. If the voltage of the second battery is less than the second voltage threshold, obtain the second gas cylinder pressure of the mechanical starter motor; If the pressure of the second gas cylinder is greater than or equal to the corresponding second pressure threshold, the mechanical starter motor is used as the target starter.

6. The control method for dual starting of a diesel engine according to claim 5, characterized in that, The step of determining the target starter motor by sequentially performing power analysis on the main starter motor and the backup starter motor further includes: When the main starter motor is the mechanical starter motor and the backup starter motor is the electric starter motor, the pressure of the third gas cylinder of the mechanical starter motor is obtained; If the pressure of the third gas cylinder is greater than or equal to the second pressure threshold, the mechanical starter motor will be used as the target starter. If the pressure of the third gas cylinder is less than the second pressure threshold, obtain the voltage of the third battery of the electric starter motor; If the voltage of the third battery is greater than or equal to the second voltage threshold, the electric starter motor is used as the target starter.

7. A control device for dual starting of a diesel engine, characterized in that, The control device for dual starting of the diesel engine includes: The starting mode determination module is used to respond to the starting command and determine the starting mode according to the operating status of the diesel engine; The starter control module is used to perform power analysis on the starter of the diesel engine based on the starting mode to determine the target starter to be operated; and to control the target starter to enter the working state.

8. A computer program product, characterized in that, It includes computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the control method for dual starting of a diesel engine as described in any one of claims 1 to 6.

9. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program to enable the electronic device to implement the control method for dual starting of a diesel engine as described in any one of claims 1 to 6.

10. A computer storage medium, characterized in that, The storage medium carries one or more computer programs that, when executed by an electronic device, enable the electronic device to implement the control method for dual starting of a diesel engine as described in any one of claims 1 to 6.

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