Engine starting cam fault detection method, electronic equipment and storage medium
By obtaining the pressure value during engine startup to judge the starting cam failure, the problems of insufficient positioning accuracy and poor adaptability of dynamic working conditions are solved, and high-precision fault detection and improved adaptability of dynamic working conditions are achieved.
Patent Information
- Application Number
- CN202510375920.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-06-20
AI Technical Summary
During the installation and operation of existing engine starting cams, there are problems such as insufficient positioning accuracy, poor adaptability to dynamic operating conditions and lack of real-time calibration mechanisms, resulting in incomplete gear meshing, reduced transmission efficiency and increased maintenance costs.
By obtaining the pressure values of the air inlet pipeline and the starting valve connection pipeline of the control slide valve when starting the engine, it is determined whether the starting cam has a fault. The specific method includes comparing the first pressure value with the second pressure value. If the first pressure value is greater than the preset value and is equal to the second pressure value, it is determined that the starting valve is started normally, indicating that the starting cam is not faulty. If the first pressure value is less than or equal to the preset value, an alarm signal is output; if the first pressure value is greater than the second pressure value, an alarm signal is output.
The accuracy of starting cam fault detection is improved, fault judgment is realized under dynamic operating conditions, maintenance costs are reduced, and dynamic operating conditions adaptability is improved.
Smart Images
Figure CN120177036A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of starting cams, and particularly to a method for detecting faults of an engine starting cam, an electronic device, and a storage medium. Background Art
[0002] In the starting systems of traditional internal combustion engines (such as diesel engines and gasoline engines), the starting cam is a key transmission component, and the accuracy of its installation position directly affects the starting effect of the engine. In the prior art, the starting cam is mostly positioned by mechanical limit or manual adjustment, which has the following defects:
[0003] Insufficient positioning accuracy: Manual installation depends on the operator's experience, and it is easy to cause the cam phase to shift due to visual errors or tool deviations, resulting in incomplete gear meshing, causing tooth surface wear or even tooth breakage faults.
[0004] Poor adaptability to dynamic working conditions: The vibration and temperature changes generated during the operation of the engine are likely to cause the fixing bolts of the cam to loosen, and the installation position to shift. After long-term accumulation, the transmission efficiency is significantly reduced.
[0005] Lack of real-time calibration mechanism: The existing structure cannot dynamically monitor the position of the cam after installation, and it is necessary to frequently stop the machine for maintenance, increasing the maintenance cost. Summary of the Invention
[0006] The present application provides a method for detecting faults of an engine starting cam, an electronic device, and a storage medium, so as to solve at least one technical problem existing in the related art.
[0007] According to one aspect of the embodiments of the present application, a method for detecting faults of an engine starting cam is provided. When starting the engine, the starting cam contacts the control slide valve. The detection method includes: obtaining a first pressure value of the air inlet pipeline of the control slide valve and a second pressure value of the starting valve connection pipeline of the control slide valve when starting the engine; and judging whether there is a fault in the starting cam according to the first pressure value and the second pressure value.
[0008] As an optional implementation manner, the judging whether there is a fault in the starting cam according to the first pressure value and the second pressure value further includes: judging whether the first pressure value is greater than a preset pressure value; if the first pressure value is greater than the preset pressure value, judging whether the first pressure value is equal to the second pressure value; if the first pressure value is equal to the second pressure value, judging whether the starting valve starts normally; if the starting valve starts normally, there is no fault in the starting cam.
[0009] As an optional implementation manner, it further includes: if the first pressure value is less than or equal to the preset pressure value, outputting an alarm signal for indicating low control air pressure.
[0010] As an alternative embodiment, it further includes: if the first pressure value is greater than the second pressure value, an alarm signal for characterizing a large gap between the control spool valve and the starting cam is output.
[0011] As an alternative embodiment, determining whether the starting valve starts normally includes: determining whether the phase of the second pressure value is equal to a preset phase; if the phase of the second pressure value is equal to the preset phase, the starting valve starts normally; if the phase of the second pressure value is not equal to the preset phase, the starting valve starts abnormally.
[0012] As an alternative embodiment, the abnormal starting of the starting valve includes: the opening time of the starting valve is normal, but the closing time is abnormal; both the opening time and the closing time of the starting valve are abnormal.
[0013] As an alternative embodiment, determining whether there is a fault in the starting cam according to the first pressure value and the second pressure value includes: determining the magnitude relationship between the first pressure value and the second pressure value; and determining whether there is a fault in the starting cam according to the magnitude relationship between the first pressure value and the second pressure value.
[0014] As an alternative embodiment, the engine includes a plurality of pressure sensors respectively disposed in the air inlet pipeline of the control spool valve and the pipeline connecting the starting valve of the control spool valve.
[0015] According to another aspect of the present application, there is provided an electronic device, including a processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete communication with each other through the communication bus. The feature is that the memory is used to store a computer program; the processor is used to execute the steps of the detection method for the fault of the engine starting cam by running the computer program stored on the memory.
[0016] According to still another aspect of the present application, there is provided a computer-readable storage medium, in which a computer program is stored. Among them, the computer program is set to execute the steps of the detection method for the fault of the engine starting cam when running.
[0017] In an embodiment of the present application, a method for detecting a fault of an engine starting cam, an electronic device, and a storage medium are provided. The method for detecting a fault of the engine starting cam includes: when starting the engine, the starting cam contacts the control spool. The detection method includes: obtaining a first pressure value of an air inlet pipeline of the control spool and a second pressure value of a starting valve connection pipeline of the control spool when starting the engine; judging whether there is a fault in the starting cam according to the first pressure value and the second pressure value. When the cam position of the starting cam contacts the control spool, the air path at the lower part of the control spool is closed, and the valve assembly inside it is affected by the pressure difference, and the control air moves upward into the starting valve. Therefore, it is possible to indirectly judge whether there is a fault in the starting cam by the first pressure value of the air inlet pipeline of the control spool and the second pressure value of the starting valve connection pipeline of the control spool. The method implementation is simple, only the pressure value can be obtained by installing a pressure sensor, the cost is low, and the data processing is simple; the accuracy of cam fault detection is improved, the judgment under dynamic working conditions is realized, and the adaptability to dynamic working conditions is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.
[0020] Figure 1 It is a schematic flowchart of a method for detecting a fault of an engine starting cam provided according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0022] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0023] As Figure 1 shown, according to one aspect of the embodiments of the present application, a method for detecting an engine starting cam fault is provided. When starting the engine, the starting cam contacts the control spool. The detection method includes:
[0024] S1 Obtain the first pressure value of the air inlet pipeline of the control spool and the second pressure value of the starting valve connection pipeline of the control spool when starting the engine;
[0025] S2 Judge whether the starting cam has a fault according to the first pressure value and the second pressure value.
[0026] Specifically, when the cam position of the starting cam contacts the control spool, the air circuit at the lower part of the control spool is closed, and the valve assembly inside it is affected by the pressure difference, and the control air moves upward into the starting valve. Therefore, it is possible to indirectly judge whether the starting cam has a fault by the first pressure value of the air inlet pipeline of the control spool and the second pressure value of the starting valve connection pipeline of the control spool. The method implementation is simple, only need to install a pressure sensor to obtain the pressure value, the cost is low, and the data processing is simple; it improves the accuracy of cam fault detection, realizes the judgment under dynamic working conditions, and improves the adaptability to dynamic working conditions.
[0027] As an optional implementation manner, the judging whether the starting cam has a fault according to the first pressure value and the second pressure value further includes:
[0028] S21 Judge whether the first pressure value is greater than a preset pressure value;
[0029] S22 If the first pressure value is greater than the preset pressure value, judge whether the first pressure value is equal to the second pressure value;
[0030] S23 If the first pressure value is equal to the second pressure value, judge whether the starting valve starts normally; if the starting valve starts normally, the starting cam has no fault.
[0031] It should be understood that it is possible to first determine whether the pressure of the control air entering the starting slide valve is normal, that is, whether the first pressure value is greater than the preset pressure value. Herein, the preset pressure value can be set, according to calibration, as the minimum value of the normal starting pressure of the engine pneumatic pipeline or slightly greater than the normal starting pressure of the engine pneumatic pipeline. Only when the pressure of the control air entering the starting slide valve is normal and the cam has no fault, can the engine start normally. Therefore, after determining that the first pressure value is greater than the preset pressure value, it is necessary to determine whether the first pressure value is equal to the second pressure value. Since the air path is closed by contacting the lower part of the control slide valve through the cam position of the starting cam, inaccurate installation position of the cam may cause the second pressure value to be less than the first pressure value. Therefore, it is possible to judge whether the installation position between the control slide valve and the starting cam is accurate by comparing the first pressure value with the second pressure value.
[0032] As an optional implementation manner, it further includes: if the first pressure value is less than or equal to the preset pressure value, an alarm signal for characterizing low control air pressure is output.
[0033] As an optional implementation manner, it further includes: if the first pressure value is greater than the second pressure value, an alarm signal for characterizing a large gap between the control slide valve and the starting cam is output.
[0034] As an optional implementation manner, judging whether the starting valve starts normally includes: judging whether the phase of the second pressure value is equal to the preset phase; if the phase of the second pressure value is equal to the preset phase, the starting valve starts normally; if the phase of the second pressure value is not equal to the preset phase, the starting valve starts abnormally.
[0035] Further, in the case where the first pressure value is greater than the preset pressure value and the first pressure value is equal to the second pressure value, it is necessary to judge whether the phase of the second pressure value is equal to the preset phase; if the phase of the second pressure value is equal to the preset phase, the starting valve starts normally; if the phase of the second pressure value is not equal to the preset phase, the starting valve starts abnormally. That is, it is judged whether the opening time, closing time and opening duration of the starting valve match the preset values.
[0036] As an optional implementation manner, the abnormal start of the starting valve includes: the opening time of the starting valve is normal, but the closing time is abnormal; the opening time and closing time of the starting valve are abnormal.
[0037] Further, if the opening time of the starting valve is normal but the closing time is abnormal, that is, the opening time of the starting valve conforms to the preset opening time, but the opening duration does not match the preset duration. In this case, it may be caused by using an incorrect starting cam. If both the opening time and the closing time of the starting valve are abnormal, there are two cases including normal opening duration and abnormal opening duration. If the opening duration is normal, there may be an incorrect installation of the starting cam phase. If the opening duration is abnormal, it may be caused by installing an incorrect starting cam.
[0038] As an alternative implementation, the determining whether there is a fault in the starting cam according to the first pressure value and the second pressure value includes: determining the magnitude relationship between the first pressure value and the second pressure value; and determining whether there is a fault in the starting cam according to the magnitude relationship between the first pressure value and the second pressure value.
[0039] As an alternative implementation, the engine includes a plurality of pressure sensors respectively arranged in the air inlet pipeline of the control slide valve and the starting valve connection pipeline of the control slide valve.
[0040] The installation method is simple and convenient, with low cost and easy data processing; it improves the accuracy of cam fault detection, realizes judgment under dynamic working conditions, and improves the adaptability to dynamic working conditions.
[0041] According to another aspect of the present application, there is provided an electronic device, including a processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete mutual communication through the communication bus. The characteristic is that the memory is used for storing a computer program; the processor is used for executing the steps of the detection method for the starting cam fault of the engine by running the computer program stored on the memory.
[0042] According to still another aspect of the present application, there is provided a computer-readable storage medium, in which a computer program is stored. Among them, the computer program is set to execute the steps of the detection method for the starting cam fault of the engine when running.
[0043] Those of ordinary skill in the art can understand that the device for implementing the above detection method for the starting cam fault of the engine can be a terminal device, and this terminal device can be a smart phone (such as an Android phone, an IOS phone, etc.), a tablet computer, a handheld computer, and a mobile Internet device (Mobile Internet Devices, MID), a PAD and other terminal devices. The present application does not limit the structure of the above electronic device.
[0044] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, and the storage medium can include: flash drive, ROM, RAM, magnetic disk or optical disc, etc.
[0045] The serial numbers of the above embodiments of the present application are only for description and do not represent the superiority or inferiority of the embodiments.
[0046] If the integrated unit in the above embodiments is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in the above computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in the storage medium and includes several instructions for causing one or more electronic devices (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
[0047] In the above embodiments of the present application, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0048] In the several embodiments provided by the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the units or modules can be in an electrical or other form.
[0049] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.
[0050] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.
[0051] In the above embodiments of the present application, the descriptions of the respective embodiments have their own focuses. For the parts not elaborated in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.
[0052] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.
Claims
1. A method for detecting an engine starting cam failure, characterized in that: When the engine is started, the starting cam contacts the control slide valve, and the detection method includes: Acquiring a first pressure value of an air inlet pipeline of the control slide valve and a second pressure value of a starter valve connecting pipeline of the control slide valve when starting the engine; It is determined whether the starting cam has a fault according to the first pressure value and the second pressure value.
2. The method for detecting engine starting cam failure according to claim 1, characterized in that: The determining whether the starting cam has a fault according to the first pressure value and the second pressure value further includes: Determining whether the first pressure value is greater than a preset pressure value; If the first pressure value is greater than the preset pressure value, determining whether the first pressure value is equal to the second pressure value; If the first pressure value is equal to the second pressure value, determining whether the starting valve starts normally; If the starting valve starts normally, there is no fault in the starting cam.
3. The method for detecting engine starting cam failure as claimed in claim 2, characterized in that: Also includes: If the first pressure value is less than or equal to the preset pressure value, an alarm signal indicating low control air pressure is output.
4. The method for detecting engine starting cam failure as claimed in claim 2, characterized in that: Also includes: If the first pressure value is greater than the second pressure value, an alarm signal indicating that the clearance between the control slide valve and the starting cam is large is output.
5. The method for detecting engine starting cam failure as claimed in claim 2, characterized in that: The determining whether the starting valve starts normally includes: Determining whether the phase of the second pressure value is equal to a preset phase; If the phase of the second pressure value is equal to the preset phase, the starting valve starts normally; If the phase of the second pressure value is not equal to the preset phase, the starting valve is abnormally started.
6. The method for detecting engine starting cam failure as claimed in claim 5, characterized in that: The abnormal starting of the starting valve includes: The opening time of the starting valve is normal, but the closing time is abnormal; The opening and closing times of the starting valve are abnormal.
7. The method for detecting engine starting cam failure as claimed in claim 1, characterized in that: The determining whether the starting cam has a fault according to the first pressure value and the second pressure value includes: Determining a magnitude relationship between the first pressure value and the second pressure value; Whether the starting cam has a fault is determined according to the magnitude relationship between the first pressure value and the second pressure value.
8. The method for detecting engine starting cam failure as claimed in claim 1, characterized in that: The engine includes a plurality of pressure sensors, which are respectively arranged at an air inlet pipeline of the control slide valve and a starter valve connecting pipeline of the control slide valve.
9. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein: The processor, the communication interface and the memory communicate with each other via the communication bus, wherein: The memory is used to store computer programs; The processor is used to execute the steps of the method for detecting an engine starting cam failure according to any one of claims 1 to 8 by running the computer program stored in the memory.
10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the steps of the method for detecting an engine starting cam failure according to any one of claims 1 to 8 when the computer program is run.