A control method, apparatus, and equipment for adjusting the power-on time in an unloaded state.

Abstract

This invention discloses a control method, device, and equipment for adjusting the energizing time in an idle state. The method determines whether to adjust the energizing time by judging whether the engine speed in the idle state is within a preset fluctuation range. If it is within the range, the method enters the energizing time adjustment mode; otherwise, it exits the mode. In the energizing time adjustment mode, an adjustment coefficient λ is obtained, and the corresponding energizing time Te is corrected based on this coefficient. The engine speed in the idle state is then acquired. If the speed fluctuation meets the specified requirements, the energizing time adjustment mode is exited; otherwise, adjustment is performed again. Therefore, this invention adjusts and corrects the energizing time in a pre-calibrated energizing time map and continuously collects real-time speed data to provide feedback on the energizing time adjustment, ensuring it matches the actual needs of the diesel engine and guaranteeing stable operation under idling conditions. This improves the problem of large speed fluctuations in the idle state.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to a control method, device, and equipment for adjusting the energizing time in an idle state. Background Technology

[0002] In existing technologies, when a diesel engine is in a low-speed, no-load condition, the operating range of the corresponding energizing time map for this condition has a sudden change in slope. If the calculated circulating oil volume and the calibrated energizing time have a non-linear relationship, it will lead to unstable fuel supply to the diesel engine, thus affecting the stability of the idle speed of the electronically controlled pump diesel engine. Furthermore, due to differences in component consistency and diesel engine operating environments, it is easy for the electronically controlled pump diesel engine to experience large speed fluctuations in the no-load state.

[0003] Therefore, those skilled in the art urgently need to design a method for adjusting and correcting the energizing time to solve the above-mentioned technical problems and enable the diesel engine to operate stably at idle speed. Summary of the Invention

[0004] To address the aforementioned shortcomings, the technical problem to be solved by this invention is to provide a control method, device, and equipment for adjusting the energizing time in an idle state. Through continuous monitoring and feedback, the energizing time of the electronic fuel injection pump is corrected to match the actual fuel supply required by the diesel engine, thereby ensuring the stable operation of the diesel engine under idling conditions.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A control method for adjusting the energizing time in an unloaded state includes the following steps:

[0007] S10. Obtain the engine speed when the vehicle is unloaded;

[0008] S20. Determine whether the engine speed is within the preset fluctuation range;

[0009] S30. If the speed is within the preset fluctuation range, generate the corresponding entry control signal;

[0010] If the rotational speed is outside the preset fluctuation range, a corresponding exit control signal will be generated;

[0011] S40. Based on the input control signal, enter the power-on time adjustment mode to obtain the adjustment coefficient λ; or;

[0012] Exit the power-on time adjustment mode based on the exit control signal;

[0013] S50. Based on the adjustment coefficient λ, correct the corresponding power-on time Te, and execute S10.

[0014] A preferred embodiment includes S00 before S10, wherein S00 includes:

[0015] Obtain the startup criteria;

[0016] The activation criteria are matched with the preset allowed entry criteria;

[0017] If the start determination condition matches the preset allowed entry condition, execute S10;

[0018] If the start-up criteria do not match the preset allowed entry criteria, exit the power-on time adjustment mode.

[0019] A preferred embodiment includes the following steps prior to S00:

[0020] Get the engine speed when the vehicle is idle;

[0021] Determine whether the difference between the rotational speed and the set rotational speed is greater than or equal to the preset difference value;

[0022] If the difference in rotational speed is greater than or equal to the preset difference, execute S00.

[0023] In a preferred embodiment, the start-up determination conditions include: the electronically controlled pump unit operating signal, the engine calculated torque, and the fault limit; then the step of matching the start-up determination conditions with the preset allowed entry conditions includes:

[0024] Determine if the operating signal of the individual electronically controlled pump is normal;

[0025] Determine whether the engine's calculated torque is within the maximum no-load torque range;

[0026] Determine if there are fault limits;

[0027] If the electronically controlled pump unit's working signal is normal, the engine's calculated torque is within the maximum no-load torque range, and there are no fault limits, then the start-up determination condition matches the preset allowed entry condition; otherwise, the start-up determination condition does not match the preset allowed entry condition.

[0028] The preferred embodiment is that the step in S40, which involves entering the power-on time adjustment mode based on the entry control signal to obtain the adjustment coefficient λ, includes:

[0029] S400: Based on the input control signal, enter the power-on time adjustment mode;

[0030] S401. Obtain the engine's operating parameters under no-load conditions according to a preset cycle;

[0031] S402. Determine whether the engine speed is within the preset fluctuation range;

[0032] S403. If the rotational speed is within the preset fluctuation range, according to the setting requirements of the two-dimensional fuzzy controller, the adjustment coefficient λ is obtained from the rule lookup table based on the operating parameters.

[0033] If the speed is not within the preset fluctuation range, exit the power-on time adjustment mode.

[0034] The preferred method is that the operating parameters include speed deviation and circulating oil supply; the rule lookup table is calibrated using a fuzzy controller, which uses the maximum speed deviation, minimum speed deviation, at least one intermediate speed deviation, average circulating oil supply, maximum circulating oil supply, minimum circulating oil supply, and at least one intermediate circulating oil supply to calibrate the rule lookup table, wherein the minimum speed deviation ≤ intermediate speed deviation ≤ maximum speed deviation, and the minimum circulating oil supply ≤ intermediate circulating oil supply ≤ maximum circulating oil supply.

[0035] The preferred method is that the specified range of the adjustment coefficient λ is -0.1≤λ≤0.1.

[0036] The preferred method is that S50 includes: calculating the adjustment step size t according to the adjustment coefficient λ using the formula t=λ*Te, where Te is the corresponding power-on time in the power-on time map in the current cycle; obtaining the corrected power-on time Te1 using the formula Te1=Te-t; and replacing the power-on time Te with the power-on time Te1.

[0037] A control device for automatically adjusting the power-on time in an empty vehicle state includes: an adjustment start-up determination unit, which acquires start-up determination conditions and matches them with preset allowed entry conditions. If they match, entry into the power-on time adjustment mode is allowed; otherwise, entry into the power-on time adjustment mode is exited. A speed fluctuation detection unit, which acquires the engine speed in an empty vehicle state and determines whether the speed is within a preset fluctuation range. If it is within the preset fluctuation range, entry into the power-on time adjustment mode is allowed; otherwise, entry into the power-on time adjustment mode is exited. A power-on time adjustment unit, which acquires the engine's operating parameters and looks up the corresponding adjustment coefficient from a calibrated rule lookup table based on the operating parameters, then uses the adjustment coefficient to correct the corresponding power-on time. A fuzzy control unit, which uses the operating parameters in an empty vehicle state through a fuzzy controller to calibrate the rule lookup table according to preset requirements.

[0038] A control device for automatically adjusting the power-on time in an empty vehicle state includes: at least one processor and a memory; the memory stores computer-executed instructions; the at least one processor executes the computer-executed instructions stored in the memory, causing the at least one processor to perform the above-described control method for adjusting the power-on time in an empty vehicle state.

[0039] After adopting the above technical solution, the beneficial effects of the present invention are:

[0040] The method, device, and equipment for adjusting the energizing time in an unloaded state according to the present invention mainly determine whether to adjust the energizing time by judging whether the engine speed in the unloaded state is within a preset fluctuation range. If the speed is within the preset fluctuation range, the energizing time adjustment mode is entered; if the speed is not within the preset fluctuation range, the energizing time adjustment mode is exited or not entered. After entering the energizing time adjustment mode, the adjustment coefficient λ is obtained, and the corresponding energizing time Te is corrected according to the adjustment coefficient λ. Then, the engine speed in the unloaded state is obtained. If the speed fluctuation meets the requirements, the energizing time adjustment mode is exited; otherwise, adjustment is performed again. It can be seen that the present invention adjusts and corrects the energizing time in a calibrated energizing time map, which is an auxiliary adjustment method. By continuously collecting the engine speed, the energizing time adjustment status is fed back to match the actual needs of the diesel engine, thereby ensuring stable operation of the diesel engine under idling conditions. This improves the problem of large speed fluctuations in the unloaded state of the diesel engine due to the inconsistency of parts and the different operating environment of the diesel engine. Moreover, the present invention has the advantages of simple operation, low cost, and easy implementation. Attached Figure Description

[0041] Figure 1 This is a flowchart illustrating the control method for adjusting the energizing time in an empty vehicle state according to the present invention.

[0042] Figure 2 This is a schematic diagram of the process for adjusting the power-on time adjustment mode in this invention;

[0043] Figure 3 This is a flowchart illustrating the control method for adjusting the power-on time in the no-load state in Embodiment 1;

[0044] Figure 4 This is a schematic diagram of the control device for adjusting the power-on time in the no-load state in this invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below 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 are not intended to limit the invention.

[0046] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0047] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Example 1:

[0049] A control method for adjusting the energizing time in an unloaded state is disclosed. This method is used on a pre-calibrated energizing time map and its main function is to adjust and correct the energizing time in the energizing time map. It is an auxiliary adjustment method. The energizing time refers to the time interval for controlling the fuel supply solenoid valve of the electronically controlled pump.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, the control method of the present invention includes the following steps:

[0051] Step S10: Obtain the engine speed n in the no-load state. r The speeds mentioned here and below are the real-time speeds of the engine; the no-load state refers to the state in which the diesel engine is not carrying any load other than the load it is equipped with.

[0052] Step S20: Determine the engine speed n r Whether it is within the preset fluctuation range; in this embodiment, the preset fluctuation range refers to [-10%n, 10%n], where n is the engine set speed.

[0053] Step S30: If the rotational speed is within the preset fluctuation range, i.e., -10%n≤n r If n is ≤10%, a corresponding entry control signal is generated.

[0054] If the rotational speed is not within the preset fluctuation range, i.e., -10%n≥n r or n r≥10%n indicates that the power-on time adjustment has failed and should not be continued. Therefore, a corresponding exit control signal is generated.

[0055] Step S40: Based on the entry control signal, enter the power-on time adjustment mode and obtain the adjustment coefficient λ; or; based on the exit control signal, exit the power-on time adjustment mode.

[0056] like Figure 2 As shown, this step involves entering the power-on time adjustment mode based on the input control signal to obtain the adjustment coefficient λ. Specifically, this includes:

[0057] S400: Based on the input control signal, enter the power-on time adjustment mode;

[0058] S401. Obtain the engine's operating parameters under no-load conditions according to a preset cycle;

[0059] It should be noted that the operating parameters in this embodiment include the engine speed and the calculated cyclic fuel supply. The operating parameters are mainly selected based on the parameters in the calibrated power-on time map, and are not limited to those listed above.

[0060] S402, Determine the engine speed n r Whether it is within the preset fluctuation range; where the preset fluctuation range refers to [-10%n, 10%n], and n is the engine set speed.

[0061] S403. If the rotational speed is within the preset fluctuation range, i.e., -10%n≤n r For speeds ≤10%n, according to the settings of the two-dimensional fuzzy controller, the adjustment coefficient λ is obtained from the rule lookup table based on the operating parameters; the specified range for the adjustment coefficient λ is -0.1 ≤ λ ≤ 0.1. If the rotational speed is not within the preset fluctuation range, i.e., -10%n ≥ n r or n r If ≥10%n, then exit the power-on time adjustment mode.

[0062] It should be noted that this invention uses a fuzzy control method to calibrate the rule lookup table and perform fuzzy adjustment of the power-on time. Fuzzy adjustment is an adjustment method that conforms to the stable operation trend of diesel engines based on a large number of calibration practices. The λ value is obtained by experimental operation verification.

[0063] The mechanism of fuzzy control is to detect the engine speed in the no-load state and adjust the power-on time map based on the feedback of the engine speed to determine the minimum cycle fuel supply Q. minThe corresponding energizing time Te is used to adjust and correct the energizing time of the fuel injection pump, matching it with the actual fuel supply required by the diesel engine. This eliminates the problem of engine idling due to mismatch between the actual engine and the calibration parameters, ensuring stable operation of the diesel engine under idling conditions.

[0064] The specific labeling of the rule lookup table is as follows:

[0065] Get the engine speed n when the vehicle is unloaded. r ;

[0066] Using the formula Δn=nn r Calculate the speed deviation Δn, and obtain the speed n according to the preset cycle. r The minimum speed deviation Δn within one cycle is obtained. min Minimum speed deviation Δn max and at least one intermediate speed deviation Δn i Intermediate speed deviation Δn i These can be Δn2, Δn3, Δn4, and Δn5 from the table below.

[0067] Simultaneously, obtain the average circulating fuel supply value Qc and the minimum circulating fuel supply value Q within a cycle. min Maximum circulating oil supply Q max and at least one intermediate circulation fuel supply Q i Intermediate circulation fuel supply Q i It can be Q2, Q3, Q5, or Q6 from the table below.

[0068] Then, using the setting requirements of the two-dimensional fuzzy controller, adjust the specified range of the coefficient λ. The calibration rule lookup table is shown below.

[0069]

[0070] In the rule lookup table above, the first row of speed deviation is obtained by equally dividing the maximum and minimum speed deviations by the median value of 0. The first column of the table, circulating fuel quantity, is obtained by dividing the maximum and minimum circulating fuel quantity by the average value Q. C It is obtained by equal distribution; where the cyclic fuel supply refers to the amount of fuel consumed by a single cylinder of the diesel engine in each working cycle.

[0071] Taking the above rule lookup table as an example: After entering the power-on time adjustment mode, the engine speed in the current cycle is obtained, and the speed deviation is obtained based on the speed. The cyclic fuel supply in the current cycle is obtained. The speed deviation and the cyclic fuel supply are used as inputs to the fuzzy controller. The fuzzy controller then looks up the corresponding adjustment coefficient λ from the above rule lookup table. For example, when the minimum speed deviation is 0.1 and the cyclic fuel supply is -0.08, the adjustment coefficient λ is found to be -0.08.

[0072] Step S50: According to the adjustment coefficient λ, which is obtained from the table above, correct the corresponding power-on time Te and execute S10; where the power-on time refers to the time interval for controlling the on and off of the oil supply solenoid valve of the electronically controlled pump.

[0073] It should be noted that: such as Figure 3 As shown, the correction for the power-on time is as follows:

[0074] Based on the adjustment coefficient λ, the adjustment step size t is calculated using the formula t=λ*Te, where Te is the corresponding power-on time in the power-on time map within the current cycle;

[0075] The corrected energizing time Te1 can be calculated using the formula Te1 = Te - t.

[0076] Finally, the power-on time Te is replaced by the power-on time Te1 to correct and adjust the power-on time.

[0077] Following the above steps, repeat the process until the engine speed stabilizes. It is evident that this invention, by determining whether the engine speed fluctuations under no-load conditions are within the normal range, automatically adjusts the fuel injection pump's energizing time using a fuzzy control rule lookup table, thereby eliminating the problem of engine idling due to a mismatch between the actual engine and its calibration parameters.

[0078] like Figure 1 and Figure 3 As shown, the control method for adjusting the energizing time in the no-load state of the present invention further includes S00 before S10, and S00 includes:

[0079] Obtain the startup criteria;

[0080] The activation criteria are matched with the preset allowed entry criteria;

[0081] If the start-up determination condition matches the preset allowed entry condition, execute S10, that is, allow entry into the power-on time adjustment mode;

[0082] If the start-up criteria do not match the preset allowed entry criteria, exit the power-on time adjustment mode.

[0083] The instruction manual requires that the start-up determination conditions include: the electronically controlled pump unit operating signal, the engine calculated torque, and the fault limit; therefore, the step of matching the start-up determination conditions with the preset allowed entry conditions in this invention includes:

[0084] Determine if the operating signal of the individual electronically controlled pump is normal;

[0085] Determine whether the engine's calculated torque is within the maximum no-load torque range;

[0086] Determine if there are fault limits;

[0087] If the electronically controlled pump unit's working signal is normal, the engine's calculated torque is within the maximum no-load torque range, and there are no fault limits, then the start-up determination condition matches the preset allowed entry condition; that is, all three start-up determination conditions must be met for them to match. Otherwise, the start-up determination condition does not match the preset allowed entry condition.

[0088] This invention ensures that the adjustment of the energizing time matches the energizing time of the electronic fuel injection pump with the actual fuel supply required by the diesel engine by setting a start-up judgment condition for the energizing time adjustment mode. This guarantees stable operation of the diesel engine under idling conditions. If the start-up judgment condition is not met, the energizing time adjustment mode is not activated to prevent affecting the stability of the diesel engine operation or to avoid exacerbating speed fluctuations due to adjustment. This improves the operational reliability of the control method for adjusting the energizing time under no-load conditions.

[0089] In a preferred embodiment, the following steps are further included before S00:

[0090] Get the engine speed when the vehicle is idle;

[0091] Determine whether the difference between the rotational speed and the set rotational speed is greater than or equal to the preset difference value, which can be set to 5 rpm / min;

[0092] If the difference in rotational speed is greater than or equal to the preset difference, execute S00.

[0093] Through the above steps, the control method of the present invention can automatically and reliably adjust and correct the power-on time after operation, and ensure that the speed fluctuation of the diesel engine meets the requirements after adjustment and correction, thereby improving the problem of large speed fluctuation of the diesel engine in the no-load state due to the inconsistency of parts and the difference in the diesel engine operating environment.

[0094] In summary, the control method for adjusting the energizing time in the no-load state of this invention automatically adjusts the energizing time value of the fuel injection pump by determining whether the engine speed fluctuation in the no-load state is within the normal range and using a fuzzy control rule lookup table. This eliminates the problem of engine idling due to mismatch between the actual engine and the calibration parameters. By detecting and controlling the engine speed and circulating fuel supply in the no-load state, the method improves the problem of large speed fluctuations in the no-load state of diesel engines caused by differences in component consistency and diesel engine operating environment. Through continuous monitoring and feedback, the energizing time value of the electronic fuel injection pump is corrected to match the actual fuel supply demand of the diesel engine, thereby ensuring stable operation of the diesel engine under idling conditions.

[0095] Example 2:

[0096] like Figure 4 As shown, a control device 100 for automatically adjusting the power-on time in an empty vehicle state includes an adjustment start-up determination unit, a speed fluctuation detection unit, a power-on time adjustment unit, and a fuzzy control unit.

[0097] The adjustment start-up determination unit is used to acquire start-up determination conditions, and then match the start-up determination conditions with preset allowed entry conditions. If they match, entry into the power-on time adjustment mode is allowed; otherwise, entry into the power-on time adjustment mode is exited. It should be noted that the start-up determination conditions may include the electronically controlled pump unit operating signal, engine calculated torque, and fault limits. The specific matching method is the same as that described in Embodiment 1.

[0098] The speed fluctuation detection unit is used to obtain the engine speed in the no-load state and determine whether the speed is within the preset fluctuation range. If it is within the preset fluctuation range, it is allowed to enter the power-on time adjustment mode; otherwise, it exits the power-on time adjustment mode. It should be noted that the preset fluctuation range can be [-10%n, 10%n] as described in Example 1, where n is the engine set speed.

[0099] The power-on time unit is used to acquire the engine's operating parameters, then find the corresponding adjustment coefficient from the calibrated rule lookup table based on the operating parameters, and then use the adjustment coefficient to correct the corresponding power-on time. It should be noted that the operating parameters can be the speed deviation and the calculated cyclic fuel supply as described in Example 1.

[0100] The fuzzy control unit uses the operating parameters under no-load conditions through the fuzzy controller to look up a table according to the set calibration rules. Specifically, the fuzzy control unit can be the fuzzy control or fuzzy adjustment described in Embodiment 1.

[0101] When the control device 100 for automatically adjusting the power-on time in the no-load state in this embodiment is applied to the control system, the adjustment start determination unit, the speed fluctuation detection unit, the power-on time adjustment unit and the fuzzy control unit are respectively communicatively connected to the control unit of the control system.

[0102] In actual operation, the adjustment start determination unit transmits the determination signal corresponding to allowing entry into or exit from the power-on time adjustment mode to the control unit based on the matching result. The control unit then starts the speed fluctuation detection unit based on the determination signal corresponding to allowing entry into the power-on time adjustment mode.

[0103] The speed fluctuation detection unit then transmits the corresponding detection signal, which indicates whether the engine is allowed to enter or exit the power-on time adjustment mode, to the control unit based on the engine speed.

[0104] The control unit then activates the power-on time adjustment unit and the fuzzy control unit based on the detection signal that allows entry into the power-on time adjustment mode. The power-on time Te in the calibrated power-on time map table is adjusted and corrected. After adjustment and correction, the engine speed is detected by the speed fluctuation detection unit. Finally, the power-on time adjustment mode is exited based on the detection signal that allows exiting the power-on time adjustment mode, thus completing the adjustment and correction of the power-on time.

[0105] As can be seen, the control device of the present invention, which automatically adjusts the energizing time in the no-load state, improves the problem of large speed fluctuations in diesel engines in the no-load state due to the inconsistency of parts and the different operating environments of diesel engines. By continuously monitoring and feedback, the energizing time value of the electronic fuel injection pump is corrected to match the actual fuel supply required by the diesel engine, thereby ensuring the stable operation of the diesel engine under idling conditions. Moreover, the control device has the advantage of being simple and easy to implement.

[0106] Example 3:

[0107] A control device for automatically adjusting the power-on time in an empty vehicle state includes: at least one processor and a memory; the memory stores computer-executed instructions; at least one processor executes the computer-executed instructions stored in the memory, causing at least one processor to execute the above-described control method for adjusting the power-on time in an empty vehicle state.

[0108] In addition, the adjustment start determination unit, speed fluctuation detection unit, and power-on time adjustment unit in Embodiment 2 are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0109] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0110] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0111] The memory may include high-speed RAM, and may also include non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0112] In one possible design, the memory can be either standalone or integrated with the processor. When the memory is set up independently, the engine burst pressure limit correction device also includes a bus for connecting the memory and the processor.

[0113] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EIA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0114] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0115] In the several embodiments provided by this invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0116] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications made within the spirit and principles of the present invention, or improvements to a control method, device, or equipment for adjusting the energizing time in an unloaded state, should be included within the scope of protection of the present invention.

Claims

1. A control method for adjusting the energizing time in an unloaded state, characterized in that, Includes the following steps: S10. Obtain the engine speed when the vehicle is unloaded; S20. Determine whether the engine speed is within the preset fluctuation range; S30. If the speed is within the preset fluctuation range, generate the corresponding entry control signal; If the rotational speed is outside the preset fluctuation range, a corresponding exit control signal will be generated; S40. Based on the input control signal, enter the power-on time adjustment mode to obtain the adjustment coefficient λ; or; Exit the power-on time adjustment mode based on the exit control signal; S50. Based on the adjustment coefficient λ, correct the corresponding power-on time Te, and execute S10; The step in S40 of entering the power-on time adjustment mode based on the entry control signal and obtaining the adjustment coefficient λ includes: S400: Based on the input control signal, enter the power-on time adjustment mode; S401. According to the preset cycle, obtain the engine speed deviation and circulating fuel supply in the no-load state; S402. Determine whether the engine speed is within the preset fluctuation range; S403. If the speed is within the preset fluctuation range, according to the setting requirements of the two-dimensional fuzzy controller, the adjustment coefficient λ is obtained by looking up the rules in the fuzzy control table based on the speed deviation and the circulating oil supply. If the speed is not within the preset fluctuation range, exit the power-on time adjustment mode.

2. The control method for adjusting the energizing time in an empty vehicle state according to claim 1, characterized in that, Before S10, there is also S00, which includes: Obtain the startup criteria; The activation criteria are matched with the preset allowed entry criteria; If the start determination condition matches the preset allowed entry condition, execute S10; If the start-up criteria do not match the preset allowed entry criteria, exit the power-on time adjustment mode.

3. The control method for adjusting the energizing time in an empty vehicle state according to claim 2, characterized in that, The steps preceding S00 include: Get the engine speed when the vehicle is idle; Determine whether the difference between the rotational speed and the set rotational speed is greater than or equal to the preset difference value; If the difference in rotational speed is greater than or equal to the preset difference, execute S00.

4. The control method for adjusting the energizing time in the no-load state according to claim 2, characterized in that, The start-up determination conditions include: the electronically controlled pump unit operating signal, the engine calculated torque, and the fault limit; the step of matching the start-up determination conditions with the preset allowed entry conditions includes: Determine if the operating signal of the individual electronically controlled pump is normal; Determine whether the engine's calculated torque is within the maximum no-load torque range; Determine if there are fault limits; If the electronically controlled pump unit's working signal is normal, the engine's calculated torque is within the maximum no-load torque range, and there are no fault limits, then the start-up determination condition matches the preset allowed entry condition; otherwise, the start-up determination condition does not match the preset allowed entry condition.

5. The control method for adjusting the energizing time in an empty vehicle state according to claim 1, characterized in that, The rule lookup table is calibrated using a fuzzy controller. The fuzzy controller calibrates the rule lookup table using the maximum speed deviation, minimum speed deviation, at least one intermediate speed deviation, average circulating oil supply, maximum circulating oil supply, minimum circulating oil supply, and at least one intermediate circulating oil supply, wherein the minimum speed deviation ≤ intermediate speed deviation ≤ maximum speed deviation, and the minimum circulating oil supply ≤ intermediate circulating oil supply ≤ maximum circulating oil supply.

6. The control method for adjusting the energizing time in an empty vehicle state according to claim 1, characterized in that, The specified range for the adjustment coefficient λ is -0.1 ≤ λ ≤ 0.

1.

7. The control method for adjusting the energizing time in an empty vehicle state according to claim 1, characterized in that, The S50 includes: Based on the adjustment coefficient λ, the adjustment step size t is calculated using the formula t=λ*Te, where Te is the corresponding power-on time in the power-on time map within the current cycle; The corrected power-on time Te1 can be obtained using the formula Te1=Te-t; Replace the power-on time Te with the power-on time Te1.

8. A control device for automatically adjusting the power-on time in an empty vehicle state, characterized in that, include: The adjustment start-up determination unit is used to obtain the start-up determination conditions and then match the start-up determination conditions with the preset allowed entry conditions. If they match, the power-on time adjustment mode is allowed; if they do not match, the power-on time adjustment mode is exited. The engine speed fluctuation detection unit is used to acquire the engine speed in the no-load state and determine whether the speed is within the preset fluctuation range. If it is within the preset fluctuation range, it is allowed to enter the power-on time adjustment mode; otherwise, it exits the power-on time adjustment mode. The power-on time adjustment unit is used to obtain the engine speed deviation and circulating fuel supply, and then find the corresponding adjustment coefficient from the rule lookup table calibrated by the fuzzy controller according to the speed deviation and circulating fuel supply, and then use the adjustment coefficient to correct the corresponding power-on time. The fuzzy control unit uses the speed deviation and circulating fuel supply in the no-load state to look up a table according to the set calibration rules through the fuzzy controller.

9. A control device for automatically adjusting the power-on time in an empty vehicle state, characterized in that, include: At least one processor and memory; The memory stores computer-executed instructions; The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the control method for adjusting the power-on time in an idle state as described in any one of claims 1 to 7.

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