A driving protection method and related device for an intake hydraulic cylinder

Abstract

The present application discloses a driving protection method and related device for an intake hydraulic cylinder, which relates to the field of engine control. The diameter of the intake hydraulic cylinder push rod is adjusted according to the intake negative pressure limit of the intake pipe to meet the material bending strength limit, and a negative pressure sensor is arranged in the intake pipe. When the engine supercharger starts the three-cut four, the exhaust hydraulic cylinder is controlled to open; the calibration interval time length of the intake hydraulic cylinder opening later than the exhaust hydraulic cylinder is obtained, and the calibration interval time length is calibrated with the intake negative pressure limit before the diameter of the intake hydraulic cylinder push rod is adjusted; the calibration interval time length is taken as the maximum value, and the intake negative pressure value of the intake pipe under different interval time lengths is continuously collected through the negative pressure sensor, and the optimal interval time length is determined by comparing with the intake negative pressure limit value. The intake negative pressure value under the optimal interval time length is less than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval time length. To avoid bending and deformation of the intake hydraulic cylinder push rod.

Description

Technical Field

[0001] The present application relates to the field of engine control technology, and in particular to a driving protection method and related device for an intake hydraulic cylinder. Background Art

[0002] At present, sequential supercharging technology is often used in large marine engines. Some models use hydraulic systems to control the normal switching of the exhaust hydraulic cylinder and the intake hydraulic cylinder.

[0003] However, when the engine supercharger is in the three-to-four mode (that is, the first three superchargers operate normally, and the fourth supercharger is cut in to operate), the interval length of the intake hydraulic cylinder opening later than the exhaust hydraulic cylinder is not well controlled. As the time increases, the negative pressure in the intake pipe will gradually increase. The force generated by the negative pressure will be transmitted to the intake hydraulic cylinder push rod through the intake butterfly valve, drive shaft and other structures, causing the intake hydraulic cylinder push rod to be subjected to lateral force, thereby bending and deforming, resulting in the inability to cut in the fourth supercharger, which in turn affects the reliability of the engine. Summary of the invention

[0004] In view of the above problems, the present application provides a driving protection method and related device for an intake hydraulic cylinder to achieve the purpose of preventing the intake hydraulic cylinder push rod from bending and deformation and successfully cutting in the fourth supercharger. The specific scheme is as follows:

[0005] In a first aspect, the present application provides a driving protection method for an intake hydraulic cylinder, wherein the driving structure of the intake hydraulic cylinder comprises an intake hydraulic cylinder push rod and an intake pipe, wherein the diameter of the intake hydraulic cylinder push rod is adjusted according to the intake negative pressure limit of the intake pipe to meet the material bending strength limit of the intake hydraulic cylinder push rod, and a negative pressure sensor is arranged in the intake pipe; the driving protection method for the intake hydraulic cylinder comprises:

[0006] When it is determined that the engine supercharger starts three-to-four cuts, the exhaust hydraulic cylinder is controlled to open;

[0007] Obtaining a calibrated interval duration at which the intake hydraulic cylinder opens later than the exhaust hydraulic cylinder, wherein the calibrated interval duration is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted;

[0008] Taking the calibrated interval duration as the maximum value, the intake negative pressure values ​​of the intake pipe at different interval durations are continuously collected by the negative pressure sensor, and the optimal interval duration is determined by comparing with the intake negative pressure limit value. The intake negative pressure value at the optimal interval duration is smaller than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval duration.

[0009] In a possible implementation, taking the calibration interval as the maximum value, continuously collecting the intake negative pressure values ​​of the intake pipe at different intervals by the negative pressure sensor, and determining the optimal interval by comparing with the intake negative pressure limit, includes:

[0010] Get the unit time interval;

[0011] Determine the interval duration of this collection according to the unit time interval, and the interval duration of this collection is less than the calibration interval duration;

[0012] When the interval time of this collection is reached, the intake negative pressure value collected this time is obtained through the negative pressure sensor, and the intake negative pressure value collected this time is compared with the intake negative pressure limit;

[0013] If the intake negative pressure value collected this time is less than the intake negative pressure limit value, the current fuel consumption value is recorded, and the process returns to the step of determining the interval length of this collection according to the unit time interval;

[0014] If the intake negative pressure value collected this time is greater than or equal to the intake negative pressure limit value, the collection is terminated, the recorded fuel consumption values ​​are compared, and the interval duration corresponding to the minimum fuel consumption value is used as the optimal interval duration.

[0015] In a possible implementation, taking the calibration interval as the maximum value, continuously collecting the intake negative pressure values ​​of the intake pipe at different intervals by the negative pressure sensor, and determining the optimal interval by comparing with the intake negative pressure limit value, further includes:

[0016] Outputting a first alarm message and controlling the air intake hydraulic cylinder to open;

[0017] When it is determined that the engine booster has completed the three-to-four ratio, the step of comparing the recorded fuel consumption values ​​is performed.

[0018] In a possible implementation, taking the calibration interval as the maximum value, continuously collecting the intake negative pressure values ​​of the intake pipe at different intervals by the negative pressure sensor, and determining the optimal interval by comparing with the intake negative pressure limit value, further includes:

[0019] When it is determined that the engine booster has not completed the three-to-four operation, a second alarm message is output and a parking protection operation is performed.

[0020] In a possible implementation, the diameter of the intake hydraulic cylinder push rod is 16 mm.

[0021] The second aspect of the present application provides a driving protection device for an intake hydraulic cylinder, wherein the driving structure of the intake hydraulic cylinder comprises an intake hydraulic cylinder push rod and an intake pipe, wherein the diameter of the intake hydraulic cylinder push rod is adjusted according to the intake negative pressure limit of the intake pipe to meet the material bending strength limit of the intake hydraulic cylinder push rod, and a negative pressure sensor is arranged in the intake pipe; the driving protection device for the intake hydraulic cylinder comprises:

[0022] The exhaust hydraulic cylinder opening module is used to control the exhaust hydraulic cylinder to open when it is determined that the engine supercharger starts three-cut four;

[0023] A calibration interval acquisition module, used to acquire a calibration interval duration at which the intake hydraulic cylinder is opened later than the exhaust hydraulic cylinder, wherein the calibration interval duration is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted;

[0024] The optimal interval determination module is used to take the calibrated interval duration as the maximum value, continuously collect the intake negative pressure values ​​of the intake pipe at different interval durations through the negative pressure sensor, and determine the optimal interval duration by comparing with the intake negative pressure limit value, the intake negative pressure value at the optimal interval duration is less than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval duration.

[0025] In a possible implementation, the optimal interval determination module is specifically configured to:

[0026] Obtain a unit time interval; determine the interval duration of this collection according to the unit time interval, the interval duration of this collection being less than the calibrated interval duration; when the interval duration of this collection is reached, obtain the intake negative pressure value of this collection through the negative pressure sensor, and compare the intake negative pressure value of this collection with the intake negative pressure limit; if the intake negative pressure value of this collection is less than the intake negative pressure limit, record the current fuel consumption value, and return to execute the step of determining the interval duration of this collection according to the unit time interval; if the intake negative pressure value of this collection is greater than or equal to the intake negative pressure limit, end the collection, compare the recorded fuel consumption values, and take the interval duration corresponding to the minimum fuel consumption value as the optimal interval duration.

[0027] The third aspect of the present application provides a computer program product, including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the driving protection method for the intake hydraulic cylinder of the first aspect or any implementation method of the first aspect.

[0028] A fourth aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0029] The memory is used to store computer programs;

[0030] The processor is used to execute the computer program so that the electronic device can implement the driving protection method of the intake hydraulic cylinder according to the first aspect or any implementation method of the first aspect.

[0031] The fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the drive protection method for the intake hydraulic cylinder of the above-mentioned first aspect or any implementation method of the first aspect.

[0032] By means of the above technical scheme, the present application provides a driving protection method and related device for an intake hydraulic cylinder. For the intake hydraulic cylinder push rod, its diameter is adjusted according to the intake negative pressure limit of the intake pipe to meet the material bending strength limit, and a negative pressure sensor is arranged in the intake pipe. When it is determined that the engine supercharger starts three-cut four, the exhaust hydraulic cylinder is controlled to open; the calibrated interval time length of the intake hydraulic cylinder opening later than the exhaust hydraulic cylinder is obtained, and the calibrated interval time length is calibrated with the intake negative pressure limit before the diameter of the intake hydraulic cylinder push rod is adjusted; with the calibrated interval time length as the maximum value, the intake negative pressure value of the intake pipe under different interval time lengths is continuously collected through the negative pressure sensor, and the optimal interval time length is determined by comparing with the intake negative pressure limit value. The intake negative pressure value under the optimal interval time length is less than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval time length. On the one hand, the application adjusts the diameter of the intake hydraulic rod cylinder push rod to ensure that it meets the material bending strength, and on the other hand, optimizes the interval time of the intake hydraulic cylinder opening to ensure that the intake negative pressure does not exceed the limit and the engine performance is optimal, thereby avoiding the possibility of bending and deformation of the hydraulic cylinder push rod. The application can effectively solve the problem of bending and deformation of the intake hydraulic cylinder push rod, ensure the successful insertion of the fourth supercharger, thereby improving the reliability of the engine and ensuring the normal and stable operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent 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.

[0034] Figure 1 It is a structural schematic diagram of the driving structure of the intake hydraulic cylinder;

[0035] Figure 2 for Figure 1 A partial cross-sectional schematic diagram of the driving structure of the intake hydraulic cylinder shown;

[0036] Figure 3 A schematic flow chart of a driving protection method for an intake hydraulic cylinder provided in an embodiment of the present application;

[0037] Figure 4 A partial flow chart of a driving protection method for an intake hydraulic cylinder provided in an embodiment of the present application;

[0038] Figure 5 A schematic structural diagram of a driving protection device for an air intake hydraulic cylinder provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0041] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0042] The terms "first", "second" etc. in the specification of the application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable in appropriate circumstances, and this is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0043] For ease of understanding, the following describes the relevant concepts involved in this application:

[0044] Hydraulic cylinder drive: refers to a driving method that uses hydraulic energy to convert the pressure energy of the liquid into mechanical energy, thereby driving the piston or plunger of the hydraulic cylinder to perform linear reciprocating motion.

[0045] See also Figure 1 , Figure 1 The schematic diagram of the driving structure of the air intake hydraulic cylinder is shown in Figure 1. Figure 2 , Figure 2 for Figure 1 The schematic diagram of the partial cross section of the driving structure of the intake hydraulic cylinder is shown in FIG. Figure 1As shown, the driving structure of the intake hydraulic cylinder includes a driving shaft 1, a rocker arm 2, a connecting rod 3, an adjustment joint 4, an intake hydraulic cylinder push rod 5 and an intake hydraulic cylinder 6. Figure 2 As shown, the driving structure of the intake hydraulic cylinder also includes an intake butterfly valve 7 and an intake pipe 8.

[0046] When the engine supercharger performs three-to-four cuts, the calibration data shows that the interval between the opening of the intake hydraulic cylinder and the exhaust hydraulic cylinder is 3.5s, the intake negative pressure is -6Kpa, and the intake hydraulic cylinder push rod 5 is bent and deformed. After analyzing the above problem, it is known that the reason why the intake hydraulic cylinder push rod 5 is bent is that the interval between the opening of the intake hydraulic cylinder and the exhaust hydraulic cylinder is too long, resulting in a large negative pressure in the intake pipe 8. The negative pressure exerts a large reverse driving force on the intake butterfly valve 7. At the moment this driving force is generated, the oil in the intake hydraulic cylinder has no time to release the pressure, causing the intake hydraulic cylinder push rod 5 to bear an excessively large bending moment. Under the action of the lateral force, the intake hydraulic cylinder push rod 5 is bent and deformed. The following is a theoretical deduction of the reasons for the bending and deformation of the intake hydraulic cylinder push rod 5:

[0047] When the intake negative pressure is -6KPa, through data calculation, it can be concluded that the lateral force of the negative pressure moment on the intake hydraulic cylinder push rod 5 is 200.7N. Generally speaking, the extension length of the intake hydraulic cylinder push rod 5 is 0.15m, and the bending moment exerted by the negative pressure moment on the intake hydraulic cylinder push rod 5 is M=200.7*0.15=30.1Nm. Assuming that the diameter of the cross section of the intake hydraulic cylinder push rod 5 is d, the circular bending resistance coefficient of the intake hydraulic cylinder push rod 5 is W=π×d 3 / 32. At present, the diameter of the intake hydraulic cylinder push rod 5 is 12 mm. When d=12 mm, the bending strength σmax=M / W=30.1 / (π×d 3 / 32) = 177.5MPa, the material used for the intake hydraulic cylinder push rod 5 is 45 steel, and the corresponding material bending strength limit is 100MPa. Obviously, under the condition of intake negative pressure of -6Kpa, the bending strength generated by the intake negative pressure is enough to cause the intake hydraulic cylinder push rod 5 with a diameter of 12mm to bend and deform.

[0048] To solve the problem of bending and deformation of the intake hydraulic cylinder push rod when the engine supercharger is in three-cut four operation. In the embodiment of the present application, the diameter of the intake hydraulic cylinder push rod 5 is adjusted according to the intake negative pressure limit of the intake pipe 8 to meet the material bending strength limit of the intake hydraulic cylinder push rod 5. Continuing with the above calibration data, the intake negative pressure limit of the intake pipe 8 is -6Kpa, and the material bending strength limit of the intake hydraulic cylinder push rod 5 is 100MPa. Assuming that the adjusted diameter of the intake hydraulic cylinder push rod 5 is X, it is necessary to satisfy σmax≤100MPa, that is, 30.1 / (π×d 3 / 32) ≤ 100MPa, which can be used to solve the range of diameters that meet the material bending strength limit.

[0049] In practical applications, considering the influence of the excessive diameter of the intake hydraulic cylinder push rod 5 on the overall driving structure, in order to ensure that the intake hydraulic cylinder push rod 5 does not bend and deform under the condition of the intake negative pressure of -6Kpa, according to the design principle and force analysis of the driving structure of the intake hydraulic cylinder, it is preferred that the diameter of the intake hydraulic cylinder push rod 5 is changed from φ12mm to φ16mm. Therefore, when d=16mm, the bending strength of the intake hydraulic cylinder push rod 5 is σmax=M / W=30.1 / (π×d 3 / 32)=74.9MPa<100MPa, that is, under the condition of intake negative pressure of -6Kpa, the bending strength generated by the intake negative pressure cannot cause the intake hydraulic cylinder push rod 5 with a diameter of 16mm to bend and deform.

[0050] On this basis, in order to further ensure the reliability of the intake hydraulic cylinder push rod 5, a negative pressure sensor is arranged in the intake pipe 8 in the embodiment of the present application to realize the driving protection of the intake hydraulic cylinder. Figure 3 , Figure 3 The following is a flow chart of a driving protection method for an intake hydraulic cylinder provided in an embodiment of the present application. Figure 3 As shown, a driving protection method for an intake hydraulic cylinder provided in an embodiment of the present application may include steps S10 to S30, and these steps are described in detail below.

[0051] S10, when it is determined that the engine supercharger starts three-to-four, the exhaust hydraulic cylinder is controlled to open.

[0052] Specifically, the engine supercharger will perform the three-to-four-speed cut only when the engine load increases. Therefore, in the embodiment of the present application, the process of the engine supercharger performing the three-to-four-speed cut can be monitored by the engine speed or the engine power. Taking the monitoring of the engine speed as an example, when the engine speed is greater than the corresponding speed threshold, it can be determined that the engine supercharger starts the three-to-four-speed cut. Under this premise, the exhaust hydraulic cylinder is further controlled to open, specifically the exhaust butterfly valve is controlled to open.

[0053] S20, obtaining a calibrated interval time length at which the intake hydraulic cylinder opens later than the exhaust hydraulic cylinder, where the calibrated interval time length is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted.

[0054] Specifically, in the embodiment of the present application, the calibrated interval time for the intake hydraulic cylinder to open later than the exhaust hydraulic cylinder is calibrated with the intake negative pressure limit before the diameter of the intake hydraulic cylinder push rod is adjusted. Continuing with the above calibration data, the interval time of 3.5s shown in the calibration data can be used as the calibrated interval time, and the intake negative pressure of -6Kpa can be used as the intake negative pressure limit.

[0055] S30, taking the calibrated interval time as the maximum value, continuously collects the intake negative pressure values ​​of the intake pipe at different interval time lengths through the negative pressure sensor, and determines the optimal interval time length by comparing it with the intake negative pressure limit value. The engine performance is optimal when the intake negative pressure value at the optimal interval time length is less than the intake negative pressure limit value and the intake hydraulic cylinder is opened according to the optimal interval time length.

[0056] Specifically, in the embodiment of the present application, for ease of understanding, the calibrated interval duration is illustrated as 3.5S. After the exhaust hydraulic cylinder is controlled to open, the timing is started to count the interval duration from the current moment to the moment when the exhaust hydraulic cylinder opens. Before reaching 3.5S, the negative pressure sensor can be used to continuously collect the intake negative pressure values ​​of the intake pipe 8 at multiple different interval durations.

[0057] Assume that, as time increases, before the interval time reaches the calibrated interval time of 3.5S, the intake negative pressure value under the interval time Ti is collected by the negative pressure sensor (Ti<3.5S). After collecting the intake negative pressure value of the negative pressure sensor under the interval time Ti, the intake negative pressure value can be compared with the intake negative pressure limit value -6Kpa. If the intake negative pressure value is greater than or equal to the intake negative pressure limit value -6Kpa, the collection of the intake negative pressure value is terminated. Otherwise, if the intake negative pressure value is less than the intake negative pressure limit value -6Kpa, the intake negative pressure value and the engine performance parameters are recorded, and the next interval time is continued.

[0058] For multiple intervals for recording the intake negative pressure values, by comparing the respective engine performance parameters, an interval with the best engine performance can be selected as the optimal interval. Under the optimal interval, the intake negative pressure value of the intake pipe 8 is less than the intake negative pressure limit value -6Kpa, and the engine performance is optimal.

[0059] In a possible implementation, the intake negative pressure values ​​of different interval lengths can be collected by setting a unit time interval, and the optimal interval length can be determined accordingly. Figure 4 , Figure 4 A partial flow chart of a driving protection method for an intake hydraulic cylinder provided in an embodiment of the present application. Figure 4As shown, a driving protection method for an intake hydraulic cylinder is provided in an embodiment of the present application, wherein in step S30, "taking the calibrated interval duration as the maximum value, continuously collecting the intake negative pressure value of the intake pipe at different interval durations through the negative pressure sensor, and determining the optimal interval duration by comparing with the intake negative pressure limit value", may include steps S301 to S305, and these steps are described in detail below.

[0060] S301, obtaining a unit time interval.

[0061] Specifically, in the embodiment of the present application, the unit time interval, that is, the time interval between two consecutive collections of intake negative pressure values ​​(that is, the time interval between two consecutive interval durations), can be a fixed value, and can also gradually decrease over time to achieve fine-grained drive protection. The embodiment of the present application does not limit this.

[0062] S302, determining the interval duration of this collection according to the unit time interval, and the interval duration of this collection is less than the calibration interval duration.

[0063] Specifically, in the embodiment of the present application, the interval duration of this collection is determined according to the interval duration of the last collection and the unit time interval, that is, the interval duration of this collection is equal to the sum of the interval duration of the last collection and the unit time interval. It is required that the interval duration of this collection is less than the calibration interval duration. If the interval duration of this collection is greater than or equal to the calibration interval duration, the collection is terminated.

[0064] S303, when the interval time of this collection is reached, the intake negative pressure value collected this time is obtained through the negative pressure sensor, and the intake negative pressure value collected this time is compared with the intake negative pressure limit.

[0065] Specifically, in the embodiment of the present application, when the interval duration of this collection is reached at the current moment, the intake negative pressure value collected this time is obtained through the negative pressure sensor and compared with the intake negative pressure limit.

[0066] S304: If the intake negative pressure value collected this time is less than the intake negative pressure limit value, the current fuel consumption value is recorded, and the process returns to step S302.

[0067] Specifically, in the embodiment of the present application, the vehicle's fuel consumption parameters are used as a reflection of the engine performance parameters. If the intake negative pressure value collected this time is less than the intake negative pressure limit, the current fuel consumption value is recorded and the process returns to step S302 to enter the next collection.

[0068] S305: If the intake negative pressure value collected this time is greater than or equal to the intake negative pressure limit value, the collection is terminated, and the recorded fuel consumption values ​​are compared, and the interval time corresponding to the minimum fuel consumption value is used as the optimal interval time.

[0069] Specifically, in an embodiment of the present application, if the intake negative pressure value collected this time is greater than or equal to the intake negative pressure limit, the collection is terminated, and the multiple recorded fuel consumption values ​​are compared, and the interval duration corresponding to the minimum fuel consumption value is taken as the optimal interval duration.

[0070] On this basis, in order to verify that the theoretical calculation value of the force analysis of the driving structure is consistent with the intake negative pressure limit calibrated by the actual test, the embodiment of the present application provides a driving protection method for an intake hydraulic cylinder, wherein in step S30, "taking the calibration interval time as the maximum value, continuously collecting the intake negative pressure value of the intake pipe at different interval time lengths through the negative pressure sensor, and determining the optimal interval time length by comparing with the intake negative pressure limit value", can include the following steps:

[0071] Output the first alarm information, and control the intake hydraulic cylinder to open; when it is determined that the engine increaser has completed the three-to-four cut, execute the step of "comparing the recorded fuel consumption values" in step S305.

[0072] In the embodiment of the present application, after the collection is completed, the first alarm information can be output to the engine controller to cause the engine controller to alarm and control the intake hydraulic cylinder to open, specifically control the intake butterfly valve 7 to open.

[0073] Further, it is determined whether the engine controller has completed the three-to-four-cut. Specifically, it is possible to determine whether the engine supercharger has completed the three-to-four-cut by the engine speed or the engine power. Taking the monitoring of the engine speed as an example, if the engine speed reaches the rated speed, it can be determined that the engine controller has completed the three-to-four-cut. Otherwise, it is determined that the engine controller has not completed the three-to-four-cut.

[0074] After determining that the engine controller has completed the three-to-four cut, the recorded fuel consumption values ​​are compared, and the interval duration corresponding to the minimum fuel consumption value is taken as the optimal interval duration.

[0075] In addition, if it is determined that the engine controller has not completed the three-to-four operation, a second alarm message is output and a parking protection operation is performed. Specifically, the second alarm message is output to the engine controller so that the engine controller issues an alarm and performs a parking protection operation.

[0076] Through the above description, the driving protection method of the intake hydraulic cylinder provided in the embodiment of the present application can effectively solve the problem of bending and deformation of the intake hydraulic cylinder push rod, so that the intake hydraulic cylinder push rod will not bend when the engine supercharger is performing three-to-four cutting, ensuring the normal cutting-in of the fourth supercharger, thereby improving the reliability of the engine and ensuring the normal and stable operation of the engine.

[0077] A driving protection method for an air intake hydraulic cylinder provided in an embodiment of the present application is introduced above, and a device for executing the driving protection method for an air intake hydraulic cylinder will be introduced below.

[0078] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a driving protection device for an intake hydraulic cylinder provided in an embodiment of the present application. Figure 5 As shown, an embodiment of the present application provides a driving protection device for an intake hydraulic cylinder, wherein the driving structure of the intake hydraulic cylinder includes an intake hydraulic cylinder push rod and an intake pipe, wherein the diameter of the intake hydraulic cylinder push rod is adjusted according to the intake negative pressure limit of the intake pipe to meet the material bending strength limit of the intake hydraulic cylinder push rod, and a negative pressure sensor is arranged in the intake pipe; the driving protection device for the intake hydraulic cylinder includes:

[0079] The exhaust hydraulic cylinder opening module 10 is used to control the exhaust hydraulic cylinder to open when it is determined that the engine supercharger starts three-to-four.

[0080] The calibration interval acquisition module 20 is used to acquire the calibration interval duration of the intake hydraulic cylinder opening later than the exhaust hydraulic cylinder, and the calibration interval duration is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted;

[0081] The optimal interval determination module 30 is used to take the calibrated interval duration as the maximum value, continuously collect the intake negative pressure values ​​of the intake pipe at different interval durations through the negative pressure sensor, and determine the optimal interval duration by comparing with the intake negative pressure limit value. The engine performance is optimal when the intake negative pressure value at the optimal interval duration is less than the intake negative pressure limit value and the intake hydraulic cylinder is opened according to the optimal interval duration.

[0082] In a possible implementation, the optimal interval determination module 30 is specifically configured to:

[0083] Obtain the unit time interval; determine the interval duration of this collection according to the unit time interval, and the interval duration of this collection is less than the calibrated interval duration; when the interval duration of this collection is reached, obtain the intake negative pressure value of this collection through the negative pressure sensor, and compare the intake negative pressure value of this collection with the intake negative pressure limit; if the intake negative pressure value of this collection is less than the intake negative pressure limit, record the current fuel consumption value, and return to execute the step of determining the interval duration of this collection according to the unit time interval; if the intake negative pressure value of this collection is greater than or equal to the intake negative pressure limit, end the collection, compare the recorded fuel consumption values, and take the interval duration corresponding to the minimum fuel consumption value as the optimal interval duration.

[0084] In a possible implementation, the optimal interval determination module 30 is further configured to:

[0085] Output the first alarm information, and control the intake hydraulic cylinder to open; when it is determined that the engine increaser has completed the three-to-four cut, perform the step of comparing the recorded fuel consumption values.

[0086] In a possible implementation, the optimal interval determination module 30 is further configured to:

[0087] When it is determined that the engine booster has not completed the three-to-four operation, a second alarm message is output and a parking protection operation is performed.

[0088] In a possible implementation, the diameter of the intake hydraulic cylinder push rod is 16 mm.

[0089] It should be noted that the detailed functions of each module in the embodiment of the present application can be found in the corresponding disclosed part of the embodiment of the driving protection method of the above-mentioned intake hydraulic cylinder, and will not be repeated here.

[0090] The present application also provides an electronic device in an embodiment. Figure 6 , Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device in the embodiment of the present application 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 6 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0091] like Figure 6 As shown, the electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage device 608 to a random access memory (RAM) 603. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0092] Typically, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although Figure 6An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0093] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any one of the drive protection methods for the intake hydraulic cylinder provided in the embodiment of the present application.

[0094] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When one or more computer programs are executed by an electronic device, the electronic device can implement any one of the drive protection methods for the intake hydraulic cylinder provided in the embodiment of the present application.

[0095] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0096] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0097] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0098] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. 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, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

Claims

1. A driving protection method for an air intake hydraulic cylinder, characterized in that: The driving structure of the air intake hydraulic cylinder includes an air intake hydraulic cylinder push rod and an air intake pipe. The diameter of the air intake hydraulic cylinder push rod is adjusted according to the air intake negative pressure limit of the air intake pipe to meet the material bending strength limit of the air intake hydraulic cylinder push rod. A negative pressure sensor is arranged in the air intake pipe. The driving protection method of the air intake hydraulic cylinder comprises: When it is determined that the engine supercharger starts three-to-four cuts, the exhaust hydraulic cylinder is controlled to open; Obtaining a calibrated interval duration at which the intake hydraulic cylinder opens later than the exhaust hydraulic cylinder, wherein the calibrated interval duration is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted; Taking the calibrated interval time as the maximum value, continuously collecting the intake negative pressure values ​​of the intake pipe at different interval time lengths through the negative pressure sensor, and determining the optimal interval time length by comparing with the intake negative pressure limit value, the intake negative pressure value at the optimal interval time length is less than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval time length; The method of taking the calibration interval as the maximum value, continuously collecting the intake negative pressure values ​​of the intake pipe at different intervals through the negative pressure sensor, and determining the optimal interval by comparing with the intake negative pressure limit value includes: Get the unit time interval; Determine the interval duration of this collection according to the unit time interval, and the interval duration of this collection is less than the calibration interval duration; When the interval time of this collection is reached, the intake negative pressure value collected this time is obtained through the negative pressure sensor, and the intake negative pressure value collected this time is compared with the intake negative pressure limit; If the intake negative pressure value collected this time is less than the intake negative pressure limit value, the current fuel consumption value is recorded, and the process returns to the step of determining the interval length of this collection according to the unit time interval; If the intake negative pressure value collected this time is greater than or equal to the intake negative pressure limit value, the collection is terminated, the recorded fuel consumption values ​​are compared, and the interval duration corresponding to the minimum fuel consumption value is used as the optimal interval duration.

2. The driving protection method of the intake hydraulic cylinder according to claim 1, characterized in that: The method takes the calibration interval as the maximum value, continuously collects the intake negative pressure values ​​of the intake pipe at different intervals by the negative pressure sensor, and determines the optimal interval by comparing with the intake negative pressure limit value, and further includes: After the acquisition is completed, a first alarm message is output, and the air intake hydraulic cylinder is controlled to open; When it is determined that the engine booster has completed the three-to-four ratio, the step of comparing the recorded fuel consumption values ​​is performed.

3. The driving protection method of the intake hydraulic cylinder according to claim 2, characterized in that: The method takes the calibration interval as the maximum value, continuously collects the intake negative pressure values ​​of the intake pipe at different intervals by the negative pressure sensor, and determines the optimal interval by comparing with the intake negative pressure limit value, and further includes: When it is determined that the engine booster has not completed the three-to-four operation, a second alarm message is output and a parking protection operation is performed.

4. The driving protection method of the intake hydraulic cylinder according to claim 1, characterized in that: The diameter of the push rod of the air intake hydraulic cylinder is 16 mm.

5. A driving protection device for an air intake hydraulic cylinder, characterized in that: The driving structure of the air intake hydraulic cylinder includes an air intake hydraulic cylinder push rod and an air intake pipe. The diameter of the air intake hydraulic cylinder push rod is adjusted according to the air intake negative pressure limit of the air intake pipe to meet the material bending strength limit of the air intake hydraulic cylinder push rod. A negative pressure sensor is arranged in the air intake pipe. The driving protection device of the air intake hydraulic cylinder comprises: The exhaust hydraulic cylinder opening module is used to control the exhaust hydraulic cylinder to open when it is determined that the engine supercharger starts three-cut four; A calibration interval acquisition module, used to acquire a calibration interval duration at which the intake hydraulic cylinder is opened later than the exhaust hydraulic cylinder, wherein the calibration interval duration is calibrated with the intake negative pressure limit value before the diameter of the intake hydraulic cylinder push rod is adjusted; an optimal interval determination module, configured to take the calibrated interval duration as the maximum value, continuously collect the intake negative pressure values ​​of the intake pipe at different interval durations through the negative pressure sensor, and determine the optimal interval duration by comparing with the intake negative pressure limit value, wherein the intake negative pressure value at the optimal interval duration is less than the intake negative pressure limit value, and the engine performance is optimal when the intake hydraulic cylinder is opened according to the optimal interval duration; Wherein, the optimal interval determination module is specifically used for: Obtain a unit time interval; determine the interval duration of this collection according to the unit time interval, the interval duration of this collection being less than the calibrated interval duration; when the interval duration of this collection is reached, obtain the intake negative pressure value of this collection through the negative pressure sensor, and compare the intake negative pressure value of this collection with the intake negative pressure limit; if the intake negative pressure value of this collection is less than the intake negative pressure limit, record the current fuel consumption value, and return to execute the step of determining the interval duration of this collection according to the unit time interval; if the intake negative pressure value of this collection is greater than or equal to the intake negative pressure limit, end the collection, compare the recorded fuel consumption values, and take the interval duration corresponding to the minimum fuel consumption value as the optimal interval duration.

6. A computer program product, characterized in that It comprises computer-readable instructions, and when the computer-readable instructions are executed on an electronic device, the electronic device implements the driving protection method for the intake hydraulic cylinder as claimed in any one of claims 1 to 4.

7. An electronic device, characterized in that: The method comprises 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 so that the electronic device can implement the driving protection method of the intake hydraulic cylinder as described in any one of claims 1 to 4.

8. A computer storage medium, characterized in that: The storage medium carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement the drive protection method for the intake hydraulic cylinder as described in any one of claims 1 to 4.

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