Engine oil lubrication control method and system based on bidirectional circulation

Abstract

The present invention discloses a method and system for controlling engine oil lubrication based on bidirectional circulation. The method comprises: setting initial values for the normal operating range and abnormal range corresponding to the engine oil pan and storage level, based on the engine's operating state; detecting the oil level information in the engine oil pan and remote storage in real time; comparing the detected oil level information with the set initial values; and, based on the comparison result, issuing an alarm to initiate or activate dual-pump circulation. The present invention enables interactive circulation between the engine oil and the remote storage oil, significantly increasing the usable oil capacity during engine operation. Under the same engine operating conditions, it also increases the engine oil change interval and reduces engine maintenance costs.

Description

Technical Field

[0001] The present invention belongs to the field of engineering machinery engine starting and lubrication technology control, and in particular relates to a system and method for engine oil lubrication control based on a bidirectional circulation. Background Art

[0002] The lubrication between the rotating parts, cylinders and pistons inside the internal combustion engine is mainly lubricated by lubricating oil. As the working time accumulates, the sliding parts will wear to varying degrees due to material wear and fatigue, and the detached iron chips and metal fragments will be carried away by the lubricating oil. For large-scale mining equipment, the working environment is very harsh, and the working locations are mostly located in remote mountainous areas. Maintenance is very difficult and if maintenance is not timely, the cylinder liner and other parts are prone to wear. In severe cases, parts need to be replaced, which will cause large economic losses. Therefore, how to extend the maintenance and use cycle of engine oil has become a current research topic.

[0003] This technical solution combines the application and use characteristics of mining equipment in recent years and finds that standardization and lubricating oil maintenance cycle are mainly affected by the following factors, namely the engine load rate (i.e. fuel consumption rate), oil lubrication capacity and oil brand and model. Under certain conditions of oil brand and engine load rate, the larger the capacity of the oil pan, the longer the engine oil maintenance cycle, so the oil capacity of the lubrication system can be increased.

[0004] Currently, the engine oil of traditional equipment is stored in the oil pan at the bottom of the engine, without any other additional storage equipment. This lubrication method requires regular filling and discharge of lubricating oil. On the one hand, it will lead to an increase in the frequency of equipment maintenance, an increase in labor hours during maintenance, and an increase in costs. On the other hand, it will lead to longer downtime, resulting in reduced mining efficiency and a decline in the economic benefits of the enterprise. Summary of the Invention

[0005] The object of the present invention is to provide an engine oil lubrication control method and system based on bidirectional circulation to solve the above problems.

[0006] The present invention is achieved by the following technical solutions:

[0007] In one aspect, the present invention provides a method for controlling engine oil lubrication based on a bidirectional circulation, wherein the control method utilizes bidirectional circulation technology and specifically includes:

[0008] Provide inlet / outlet oil passages between the engine oil pan and the remote storage to allow oil to circulate between the two containers;

[0009] In combination with the working state of the engine, the initial values of the normal working range and abnormal range corresponding to the engine oil pan liquid level and the storage liquid level are set;

[0010] Real-time detection of engine oil level information in the oil pan and remote storage;

[0011] Compare the detected oil level information with the set initial value;

[0012] Based on the comparison results, an alarm is issued or dual pump circulation processing is started;

[0013] The generating of an alarm or initiation of a dual-pump circulation process based on the comparison result includes: generating an alarm process when it is determined that the oil level information of the engine oil pan and the remote storage is abnormal; and initiating a dual-pump circulation process when it is determined that the oil level information of the engine oil pan and the remote storage is insufficient or overfull, so that the oil level in the oil pan and the oil level in the storage are maintained within a set value range.

[0014] In one embodiment, the provision of inlet / outlet oil passages between the engine oil pan and the remote reservoir to enable oil to flow between the two containers comprises:

[0015] Inlet / outlet oil passages are provided on the engine oil pan and the remote storage respectively;

[0016] The oil inlet / outlet ports are arranged on both sides of the engine oil pan at the same height, and the position of the ports is higher than the highest liquid level of the oil solution in the oil pan;

[0017] An "L"-shaped oil suction manifold is installed at the oil outlet of the engine oil pan. The lowest position of the oil suction manifold corresponds to the "HF3" scale, which indicates the maximum oil suction capacity of pump A.

[0018] Oil inlet / outlet ports are respectively set at the lower and upper ends of the remote storage, wherein the oil outlet of the storage is at the lower end and the height position is lower than the minimum oil capacity liquid level "HC3" of the storage; the oil inlet of the storage is at the upper end and the height position is higher than the maximum oil capacity liquid level "HC0" of the storage.

[0019] In one embodiment, the setting of initial values of the normal working range and abnormal working range corresponding to the engine oil sump liquid level and the storage liquid level in combination with the working state of the engine includes:

[0020] 1) The engine has been stopped or has been running for more than 30 minutes:

[0021] The oil pan liquid level should be at or close to the "HFb" scale, and within the set value range (HFb_L, HFb_H);

[0022] The liquid level of the reservoir should be at or close to the "HCb" scale, and within the set value range (HCb_L, HCb_H);

[0023] 2) After the engine is started and running normally:

[0024] The oil pan level should be within the set value range (HF0, HF3). When the oil pan level is higher than "HF0" or lower than "HF3", it indicates that the oil pan level is higher / lower than normal.

[0025] The liquid level of the memory should be within the set value range (HC0, HC3). When the oil level in the memory is higher than "HC0" or lower than "HC3", it indicates that the memory liquid level is higher / lower than the normal value.

[0026] In one embodiment, the condition for starting the dual pump cycle is that the engine oil pan oil level and the reservoir oil level values are within the initial value range of the set normal working range, and the hydraulic pilot control handle is in the unlocked and actuated state.

[0027] In one embodiment, starting the dual pump cycle to maintain the oil level in the oil pan and the oil level in the reservoir within a set value range specifically includes:

[0028] Start the circulation pump A to pump the oil from the engine oil pan to the remote storage until the oil level in the oil pan drops to the set value range and the oil level in the storage rises to the set value range;

[0029] Start circulation pump B to pump the oil in the remote storage to the engine oil pan until the oil level in the oil pan rises to the set value range and the oil level in the storage falls to the set value range;

[0030] The time interval between the operation of circulating pumps A and B is determined by the oil level in the engine oil pan and the oil level in the reservoir.

[0031] In a second aspect, the present invention provides an engine oil lubrication control system based on a bidirectional circulation, the system comprising: an MC whole machine module control unit, an ECM oil system module control unit, a dual pump circulation management system module control unit, and a data monitoring and information recording control module unit;

[0032] The MC whole machine module control unit is used to continuously process the data information sent by the ECM oil system module control unit and the dual pump circulation management system module control unit, and to record data and alarm information in a timely and effective manner;

[0033] The ECM oil system module control unit is used to detect the oil level information of the engine oil pan and remote storage in real time during engine operation, transmit the parameters to the communication network, and send an alarm when the main body oil control parameters are abnormal, and adjust the engine operating status;

[0034] The dual-pump circulation management system module control unit is used to receive data signals sent by the MC whole machine module control unit and the ECM oil system module control unit; when the detected data exceeds the set value of the dual-pump circulation management system module control unit, it sends an alarm message; when the detected oil level information of the engine oil pan and the remote storage is insufficient or overfull, it controls the interactive circulation between the oil level of the oil pan and the oil in the remote storage according to the oil level information;

[0035] The data monitoring and information recording control module unit is used to record the data of the oil management system throughout its life cycle, providing a basis for the analysis of the engine's life cycle;

[0036] The MC whole machine module control unit, ECM oil system module control unit, dual pump circulation management system module control unit and data monitoring and information recording control module unit are all connected to the communication network to transmit data information.

[0037] In one embodiment, the system also includes an information display and alarm control module unit. When the dual-pump circulation management system module unit detects that the data sent by the MC whole machine module control unit and the ECM oil system module control unit are abnormal, it is fed back to the information display and alarm control module unit. The information display and alarm control module unit records the data and alarms to remind the driver, and sends data to the controller to prohibit the engine from starting.

[0038] In one embodiment, the dual-pump circulation management system module control unit is composed of two groups of working pumps, circulation pump A and circulation pump B, a detection device, a logic controller and a circulation pipeline.

[0039] In one embodiment, the dual-pump circulation management system module control unit is further configured to: provide a reminder of whether the detected engine oil pan oil level and storage oil level information are normal by controlling an indicator light and an alarm tone, specifically:

[0040] Before starting the engine:

[0041] When the oil level in the engine oil pan and the oil level in the storage of the dual pump circulation management system module control unit are normal, the working indicator light is green and always on, and there is no alarm prompt sound;

[0042] When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and storage oil level, the working indicator light turns red and stays on, and an alarm sound is emitted;

[0043] After the engine is started and during operation:

[0044] When the dual-pump circulation management system module control unit detects that the engine oil pan oil level and the storage oil level are normal, the working indicator light turns green and flashes according to a specific cycle, and there is no alarm prompt sound;

[0045] When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and the storage oil level, the working indicator light turns red and flashes at a specific cycle, and an alarm sound is issued.

[0046] In one embodiment, the system further includes a GPS remote data transmission module control unit, which is used to upload timely and effective data records and alarm information of the MC complete module control unit to the remote data system.

[0047] Beneficial effects of the present invention:

[0048] The present invention is based on a dual-pump circulation management system module control unit, which realizes the interactive circulation between the engine body oil and the remote storage oil, greatly improving the use capacity of the oil used in engine operation. Under the same engine operating state, it can greatly improve the engine oil replacement cycle, reduce engine maintenance costs, and improve production efficiency; on the other hand, the development of the circulation management system module control unit further improves the oil lubrication efficiency and improves energy utilization while meeting the premise of extending the oil change cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0050] Figure 1 A flow chart of an engine oil lubrication control method based on a bidirectional circulation according to an embodiment of the present invention;

[0051] Figure 2 The relationship between the oil pan / storage liquid level and time function of an engine oil lubrication control method based on a bidirectional circulation provided by one embodiment of the present invention;

[0052] Figure 3 A schematic diagram of the composition and communication network structure of an engine oil lubrication control system based on a bidirectional circulation system provided by one embodiment of the present invention;

[0053] Figure 4 A logic diagram of a method for controlling engine oil lubrication based on a bidirectional circulation system according to an embodiment of the present invention;

[0054] Figure 5 A timing diagram of the operation of pumps A / B in an engine oil lubrication control method based on a bidirectional circulation according to an embodiment of the present invention;

[0055] Figure 6 A relationship diagram of the total oil capacity, oil maintenance cycle, and average load rate provided by one embodiment of the present invention;

[0056] Figure 7 A linear graph of the oil utilization rate 1 / K value after adopting an engine oil lubrication control method based on a bidirectional circulation provided by an embodiment of the present invention.

[0057] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] The present invention will be further described below with reference to the accompanying drawings.

[0060] like Figure 1 As shown, the present invention provides a method for controlling engine oil lubrication based on a bidirectional circulation. The control method utilizes bidirectional circulation technology and specifically includes the following steps:

[0061] Step S100: setting oil inlet / outlet channels of the engine oil pan and the remote storage to enable oil to circulate between the two containers.

[0062] In the embodiment of the present application, an inlet / outlet oil channel is provided between the engine oil pan and the remote storage to enable the oil to circulate between the two containers; Figure 2 Shown, including:

[0063] Inlet / outlet oil passages are provided on the engine oil pan and the remote storage respectively;

[0064] The oil inlet / outlet ports are arranged on both sides of the engine oil pan at the same height, and the position of the ports is higher than the highest liquid level of the oil solution in the oil pan;

[0065] An "L"-shaped oil suction manifold is installed at the oil outlet of the engine oil pan. The lowest position of the oil suction manifold corresponds to the "HF3" scale, which indicates the maximum oil suction capacity of pump A.

[0066] Oil inlet / outlet ports are respectively set at the lower and upper ends of the remote storage, wherein the oil outlet of the storage is at the lower end and the height position is lower than the minimum oil capacity liquid level "HC3" of the storage; the oil inlet of the storage is at the upper end and the height position is higher than the maximum oil capacity liquid level "HC0" of the storage.

[0067] Step S200: Based on the working state of the engine, set the initial values of the normal working range and abnormal range corresponding to the engine oil pan liquid level and the storage liquid level.

[0068] In the examples of this application, refer to Figure 2 As shown, the normal working range and abnormal range corresponding to the engine oil pan liquid level and the storage liquid level are set, including:

[0069] 1) The engine has been stopped or has been running for more than 30 minutes:

[0070] The oil pan liquid level should be at or close to the "HFb" scale, and within the set value range (HFb_L, HFb_H);

[0071] The liquid level of the reservoir should be at or close to the "HCb" scale, and within the set value range (HCb_L, HCb_H);

[0072] 2) After the engine is started and running normally:

[0073] The oil pan level should be within the set value range (HF0, HF3). When the oil pan level is higher than "HF0" or lower than "HF3", it indicates that the oil pan level is higher / lower than normal.

[0074] The liquid level of the memory should be within the set value range (HC0, HC3). When the oil level in the memory is higher than "HC0" or lower than "HC3", it indicates that the memory liquid level is higher / lower than the normal value.

[0075] Step S300: Real-time detection of engine oil level information in the engine oil pan and remote storage.

[0076] Specifically, the oil level information is detected and obtained by an oil level sensor located in the oil pan.

[0077] Step S400: Compare the detected oil level information with the set initial value.

[0078] Step S500: Based on the comparison result, an alarm is issued or a dual pump circulation process is started.

[0079] In an embodiment of the present application, an alarm is issued or a dual-pump circulation process is started based on the comparison result, including: when it is determined that the oil level information of the engine oil pan and the remote storage is abnormal, an alarm process is issued; when it is determined that the oil level information of the engine oil pan and the remote storage is insufficient or overfull, a dual-pump circulation is started to keep the oil level in the oil pan and the storage oil level within the set numerical range.

[0080] In the embodiment of the present application, the condition for starting the dual pump cycle is that the engine oil pan oil level and the storage oil level values are within the initial value range of the set normal working range, and the hydraulic pilot control handle is in the unlocked and actuated state.

[0081] Furthermore, the dual pump cycle is started to keep the oil level in the oil pan and the oil level in the reservoir within the set value range, specifically including:

[0082] Start the circulation pump A to pump the oil from the engine oil pan to the remote storage until the oil level in the oil pan drops to the set value range and the oil level in the storage rises to the set value range;

[0083] Reference Figure 2 As shown, the oil level in the oil pan is: "HF3≤HFx≤HF2"; the oil level in the storage tank is: "HC1≤HFx≤HC0".

[0084] Start circulation pump B to pump the oil in the remote storage to the engine oil pan until the oil level in the oil pan rises to the set value range and the oil level in the storage falls to the set value range;

[0085] Reference Figure 2 As shown, the oil level in the oil pan is: "HF2≤HFx≤HF1", the oil level in the storage tank is: "HC2≤HCx≤HC1" or the oil level in the oil pan is: "HF1≤HFx≤HF0", the oil level in the storage tank is: "HC3≤HCx≤HC2".

[0086] The time interval between the operation of circulating pumps A and B is determined by the oil level in the engine oil pan and the oil level in the reservoir.

[0087] It should be noted that the circulation pumps A and B work alternately, that is, the circulation pump A starts working and ends working period, the circulation pump B does not work, similarly, the circulation pump B starts working and ends working period, the circulation pump A does not work, and the time intervals of the circulation pumps A and B working are not necessarily equal. The judgment conditions are the oil level of the engine oil pan and the oil level value of the storage. Figure 5 shown.

[0088] The proposed engine oil lubrication control method enables interactive circulation between the engine's oil and the oil in a remote storage reservoir. This significantly increases the engine's oil change interval, reduces engine maintenance costs, and improves production efficiency. Furthermore, the development of a circulation management system module control unit further enhances oil lubrication efficiency while extending oil change intervals. This improved energy utilization is crucial for green construction and protecting ecological balance.

[0089] Reference Figure 3 As shown, the present invention provides an engine oil lubrication control system based on a bidirectional circulation, which includes: an MC whole machine module control unit, an ECM oil system module control unit, a dual-pump circulation management system module control unit, and a data monitoring and information recording control module unit;

[0090] The MC whole machine module control unit is used to continuously process the data information sent by the ECM oil system module control unit and the dual pump circulation management system module control unit, and to record data and alarm information in a timely and effective manner;

[0091] The ECM oil system module control unit is used to detect the oil level information of the engine oil pan and remote storage in real time during engine operation, transmit the parameters to the communication network, and send an alarm when the main body oil control parameters are abnormal, and adjust the engine operating status;

[0092] The dual-pump circulation management system module control unit is used to receive data signals sent by the MC whole machine module control unit and the ECM oil system module control unit; when the detected data exceeds the set value of the dual-pump circulation management system module control unit, it sends an alarm message; when the detected oil level information of the engine oil pan and the remote storage is insufficient or overfull, it controls the interactive circulation between the oil level of the oil pan and the oil in the remote storage according to the oil level information;

[0093] The data monitoring and information recording control module unit is used to record the data of the oil management system throughout its life cycle, providing a basis for the analysis of the engine's life cycle;

[0094] The MC whole machine module control unit, ECM oil system module control unit, dual pump circulation management system module control unit and data monitoring and information recording control module unit are all connected to the communication network to transmit data information.

[0095] Furthermore, the system also includes an information display and alarm control module unit. When the dual-pump circulation management system module unit detects that the data sent by the MC whole machine module control unit and the ECM oil system module control unit are abnormal, it is fed back to the information display and alarm control module unit. The information display and alarm control module unit records the data and alarms to remind the driver, and sends data to the controller to prohibit the engine from starting.

[0096] Furthermore, the dual-pump circulation management system module control unit consists of two groups of working pumps, circulation pump A and circulation pump B, a detection device, a logic controller and a circulation pipeline.

[0097] Specifically, Pump A pumps oil from the engine oil pan to the remote storage until the pan oil level drops to a set range and the storage oil level rises to a set range. Specifically, the oil pan oil level is: "HF3 ≤ HFx ≤ HF2"; the storage oil level is: "HC1 ≤ HFx ≤ HC0." The dual-pump circulation management system module control unit detects data signals from the MC control unit and the ECM oil system module control unit. Under the control of its own logic control unit, it outputs a signal to drive Pump A to pump oil to the remote storage. Pump B pumps oil from the remote storage to the engine oil pan until the pan oil level rises to a set range and the storage oil level drops to a set range. That is, the oil level in the oil pan: "HF2≤HFx≤HF1", the oil level in the storage: "HC2≤HCx≤HC1" or the oil level in the oil pan: "HF1≤HFx≤HF0", the oil level in the storage: "HC3≤HCx≤HC2"; the dual-pump circulation management system module control unit detects the data signals sent by the MC whole module control unit and the ECM oil system module control unit, and outputs signals to drive pumps A / B to work under the control program of its own logic control unit to circulate the oil.

[0098] The design and development of the dual-pump circulation management system module control unit can greatly extend the oil change cycle of the engine oil under the same load operating conditions of high-horsepower engines. This is mainly achieved through the circulation control device and logical operations. The oil level sensor located in the oil pan transmits the detection signal to the communication network. The dual-pump circulation management system module control unit controls the working time and interval of pumps A and B, and keeps the oil capacity of the engine oil pan and remote storage stable at the balance point at all times to achieve unity.

[0099] In the embodiment of the present application, the dual-pump circulation management system module control unit is further used to: prompt whether the detected engine oil pan oil level and storage oil level information are normal or not by controlling the indicator light and the alarm prompt sound, specifically:

[0100] Before starting the engine:

[0101] When the dual-pump circulation management system module control unit detects that the engine oil pan oil level and the storage oil level are normal, the working indicator light is green and always on, and there is no alarm prompt sound;

[0102] When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and storage oil level, the working indicator light turns red and stays on, and an alarm sound is emitted;

[0103] After the engine is started and during operation:

[0104] When the dual-pump circulation management system module control unit detects that the engine oil pan oil level and the storage oil level are normal, the working indicator light turns green and flashes according to a specific cycle, and there is no alarm prompt sound;

[0105] When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and the storage oil level, the working indicator light turns red and flashes at a specific cycle, and an alarm sound is issued.

[0106] Furthermore, the alarm prompt sound is a "beep, beep..." alarm prompt sound.

[0107] In the embodiment of the present application, the alarm information sent by the dual pump circulation management system module control unit includes static data abnormality alarm and dynamic data abnormality alarm; the static data abnormality alarm refers to the alarm sent when the whole machine is powered on, and the dynamic data abnormality alarm refers to the alarm sent when the generator oil pump is working. Figure 4 shown.

[0108] In an alternative embodiment, if Figure 3 As shown, the system also includes a GPS remote data transmission module control unit and an information display and alarm control module unit.

[0109] The GPS remote data transmission module control unit is used to upload the timely and effective data records and alarm information of the MC complete module control unit to the remote data system;

[0110] The information display and alarm control module unit is used to display fault codes and alarms for the information sent by the dual-pump circulation management system module control unit.

[0111] Furthermore, according to the fault codes provided on the display, liquid level abnormalities are divided into three categories: cracked oil pan / storage, oil leakage; loose oil pan / storage oil drain plug, oil leakage; faulty oil pan / storage drain ball valve, oil leakage.

[0112] Specifically, when the detected oil level data exceeds the controller setting value, the dual pump circulation management system module control unit sends an alarm message, and the red alarm indicator light turns on, indicating that there are three possible reasons for the abnormal level. The fault code is displayed on the information display and alarm control module unit, allowing the driver to find the cause of the fault based on the code. The information code information of the abnormal engine oil pan level mainly includes:

[0113] 1) The engine oil pan is cracked and the oil leaks, resulting in abnormal liquid level;

[0114] 2) The engine oil drain plug is loose, resulting in abnormal oil level;

[0115] 3) Abnormal oil level due to failure of the engine oil drain ball valve;

[0116] The information coding of abnormal storage liquid level mainly includes:

[0117] 1) The reservoir is cracked and the oil leaks, causing abnormal liquid level;

[0118] 2) The reservoir drain plug is loose, causing abnormal oil level;

[0119] 3) The oil level is abnormal due to a malfunction of the oil drain ball valve of the storage device;

[0120] like Figure 4 , which shows a logic diagram of an engine oil lubrication control method executed in an engine oil lubrication control system.

[0121] 1: The hydraulic shovel is in the initial state, the engine is in the shutdown state, the pilot control handle is in the middle position, and the safety handle is in the locked position. At this time, the key switch is powered on, the MC controller is powered, and the dual pump circulation management system module control unit is powered. The static oil level of the engine oil pan and the remote storage are detected respectively, and the data value is sent to the controller for comparison with the set value. The comparison results are as follows:

[0122] Condition 1: Oil pan oil level detection value HF X = HFb or within the maximum and minimum range of HFb, that is: HFb_L≤HFx≤HFb_H, which meets the requirements;

[0123] Condition 2: When the remote storage oil level detection value: HCx = HCb or is within the maximum and minimum range of HCb, that is, HCb_L ≤ HCx ≤ HCb_H, the requirement is met;

[0124] When both of the above conditions are met, the "normal" indicator on the dual-pump circulation management system module's control unit illuminates. If either condition is not met, the red alarm indicator illuminates, indicating an abnormal value detected by the dual-pump circulation management system module. This abnormal value is sent via the CAN bus to the instrument display. The driver reviews the alarm message, determines if the oil level in the oil pan or remote storage device is abnormal, and then shuts down the engine for inspection. Based on the fault code displayed on the display, abnormal oil levels can be broadly categorized into three types: a cracked oil pan / storage device (e.g., an oil leak); a loose oil drain plug (e.g., an oil leak); and a faulty oil drain valve (e.g., an oil leak).

[0125] 2: The key is turned on, the engine starts and runs, the safety handle is unlocked, the pilot control handle is activated, the whole machine is in motion, the oil is pumped to all the lubrication channels inside the engine, the oil level in the oil pan drops, and at the same time the working indicator light of the dual-pump circulation management system module control unit lights up, the status indicator light goes out, and the oil level information of the engine oil pan and the remote memory is continuously detected. When the oil level information data of the engine oil pan indicates "HF3≤HFx≤HF2" and the oil level information of the remote memory indicates "HC1≤HFx≤HC0", the working circuit of circulation pump A is formed, working pump A starts working, and oil is pumped from the remote memory to the engine oil pan. As the oil flows in, the oil capacity of the engine oil pan continues to increase, the liquid level increases, and the oil capacity in the remote memory continues to decrease, and the liquid level decreases.

[0126] 3: As the working pump A continues to work, when the oil level in the engine oil pan rises to the range of HF2≤HFx≤HF1 or HF1≤HFx≤HF0, and the oil level in the external storage is within the range of HC2≤HCx≤HC1 or HC3≤HCx≤HC2, the working pump A stops working, the working circuit of the working pump B is formed, and the working pump B starts working. The oil is pumped from the engine oil pan to the remote storage. As the oil flows out, the oil capacity of the engine oil pan continues to decrease, the liquid level decreases, and the oil capacity in the remote storage continues to increase, and the liquid level rises.

[0127] 4: During the operation of the circulation control module, when the engine oil pan oil level and the oil level in the remote memory are abnormal, that is, the oil pan oil level HF0≤HFx or HFx≤HF3, and the oil level in the remote memory HCx≤HC3 or HC0≤HCx, the circulation control module abnormality indicator light will light up, the working indicator light will go out, and the driver will be prompted to stop the engine for maintenance and eliminate the abnormality. The ECM oil system module control unit will record and store the abnormal information.

[0128] 5. When the pilot control handle of the entire machine returns to the neutral position and the safety handle is locked, the dual-pump circulation management system module control unit detects the oil level values in the engine oil pan and remote storage, and controls the operation of working pumps A / B, eventually restoring the oil levels in the two containers to the range before startup, that is: the static oil position "HFx" of the oil pan approaches HFb, between HFb_H and HFb_L, and the static oil position "HCx" of the remote storage approaches HCb, between HCb_H and HCb_L.

[0129] VI. Research data from operating machines equipped with the dual-pump circulation management system module control unit reveals that, given a certain engine sump oil capacity and average load, a linear increase in the remote reservoir oil capacity significantly improves the overall oil maintenance interval, significantly improving the lubrication effectiveness (maximum utilization) of the oil. This is further illustrated using actual data.

[0130] Traditional solution (dual pump circulation management system not developed): A large mining excavator is used for earthwork loading project. The capacity of its engine oil pan is V YD The brand of engine oil maintenance is Shell (CI-4, 15W-40), and the purchase price is C JY , normal engine overhaul cycle T DX , the maintenance cycle of engine oil is T JY (is a specific constant), the total cost of oil replacement during the overhaul period is C O , total labor cost F YG ,

[0131] Single maintenance labor costf YG ;

[0132] Among them, the engine oil maintenance cycle T JY It refers to the oil change cycle when the engine is under a certain working condition (load) and a certain oil brand.

[0133] Known: V FD =266L, C JY =15.64, T DX =18000 hours, T JY =250 hours, f YG =500; the result is:

[0134] 1. Maintenance times per overhaul period K BY =T DX / T JY =72;

[0135] 2. Total labor cost for a single overhaul period F YG =KBY ×f YG =3.6×10 4

[0136] 3. The cost of replacing engine oil during a single overhaul period is: C O =(T DX / T JY )×V FD ×C JY =2.90×10 5 ;

[0137] The solution provided by the present invention (development of a dual pump circulation management system): Same as the above example: The capacity of the oil pan of this engine model is V YD The brand of engine oil maintenance is Shell (CI-4, 15W-40), and the purchase price is C JY , the rated power of the engine is P ED ; The mining industry is an earthwork loading project, and the average load rate is T FHV , the capacity of the remote storage oil is V C , the maintenance cycle of engine oil is T JY , hourly fuel consumption of the engine B e ;

[0138] Known: the relationship between the total oil capacity, oil maintenance cycle and average load rate (V YD +V C , T JY , T FHV );like Figure 6 shown.

[0139] Working process of dual pump circulation management system:

[0140] Take the capacity V of the engine oil pan YD =266L; average engine load rate T FHV =65%; oil capacity hour ratio is 1 / K h / v =Total system oil capacity / oil maintenance cycle;

[0141] ① At point P0, when the oil capacity V C1 =0L, the total oil capacity of the system is 266L; the maintenance period of the whole machine is 250 hours, then 1 / K C0 =266 / 250=1.064;

[0142] ② At point P1, when the oil capacity V C1 =1.0V YD =266L, the total oil capacity of the system is 532L; the maintenance period of the whole machine is 650 hours, then 1 / K C1=650 / 532=1.222;

[0143] ③ At point P2, when the oil capacity of the remote storage VC1=1.0V YD +100=366, the total oil capacity of the system is 632L; the maintenance period of the whole machine is 900 hours, then 1 / K C2 =900 / 632=1.424;

[0144] ④ At point P3, when the oil capacity of the remote storage VC1=1.0V YD +200=466L, the total oil capacity of the system is 732L; the maintenance period of the whole machine is 1150 hours, then 1 / K C3 =1150 / 732=1.571;

[0145] Conclusion:

[0146] That is: 1 / K C3 =1.571>1 / K C2 =1.424>1 / K C1 =1.222>1 / K C0 =1.064, as the oil capacity of the remote storage increases, the oil capacity-hour ratio is gradually increasing, and the K value is decreasing, indicating that the oil utilization rate is gradually increasing. Figure 7 As shown. Take the experimental plan at point P2 to calculate the labor cost and oil replacement cost, given that: V FD =266L, C JY =15.64, T DX =18000 hours, T JY =250 hours, f YG =500; the capacity of the remote storage oil is V C =366L. The result is:

[0147] 1. From the relationship table of total oil capacity, oil maintenance cycle and average load rate, we can find that the oil maintenance cycle T JY =900 hours;

[0148] 2. Maintenance times per overhaul period K BY =T DX / T JY =20;

[0149] 3. Total labor cost for a single overhaul period F YG =K BY ×f YG =1.0×10 4 ;

[0150] 4. The cost of replacing engine oil during a single overhaul period is:

[0151] C2=(T DX / T JY )×(V FD +V C2 )×C JY =2.9×10 5 =1.66×10 5 .

[0152] As shown in the following table:

[0153] Tradition Equipped with circulation control module <![CDATA[Number of maintenance during overhaul period K BY > 72 20 <![CDATA[Total labor cost F during major overhaul period YG > <![CDATA[3.6×10 4 ]]> <![CDATA[1.0×10 4 ]]> Total cost of oil consumption during overhaul period C <![CDATA[2.90×10 5 ]]> <![CDATA[1.66×10 5 ]]>

[0154] It can be seen that the development of a circulation control module can significantly reduce the maintenance cost of mining machinery, reduce the oil loss cost of equipment manufacturers and customers, and improve energy utilization.

[0155] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0156] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0157] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A method for controlling engine oil lubrication based on a bidirectional circulation, characterized in that: The control method uses a two-way loop technology, specifically including: Provide inlet / outlet oil passages between the engine oil pan and the remote storage to allow oil to circulate between the two containers; In combination with the working state of the engine, the initial values of the normal working range and abnormal range corresponding to the engine oil pan liquid level and the storage liquid level are set; Real-time detection of engine oil level information in the oil pan and remote storage; Compare the detected oil level information with the set initial value; Based on the comparison results, an alarm is issued or dual pump circulation processing is started; The generating of an alarm or initiating a dual-pump circulation process based on the comparison result includes: generating an alarm process when it is determined that the oil level information of the engine oil pan and the remote storage is abnormal; initiating a dual-pump circulation process when it is determined that the oil level information of the engine oil pan and the remote storage is insufficient or overfull, so that the oil level of the oil pan and the oil level of the storage are maintained within a set value range; The oil inlet / outlet passages of the engine oil pan and the remote storage are provided to enable oil to circulate between the two containers; including: Inlet / outlet oil passages are provided on the engine oil pan and the remote storage respectively; The oil inlet / outlet ports are arranged on both sides of the engine oil pan at the same height, and the position of the ports is higher than the highest liquid level of the oil solution in the oil pan; An "L"-shaped oil suction manifold is installed at the oil outlet of the engine oil pan. The lowest position of the oil suction manifold corresponds to the "HF3" scale, which indicates the maximum oil suction capacity of pump A. The oil inlet and outlet ports are located at the lower and upper ends of the remote reservoir. The oil outlet is located at the lower end and should be below the reservoir's minimum oil level (HC3). The oil inlet is located at the upper end and should be above the reservoir's maximum oil level (HC0). The initial values of the normal working range and abnormal working range corresponding to the engine oil pan liquid level and the storage liquid level are set in combination with the working state of the engine, including: 1) The engine has been stopped or has been running for more than 30 minutes: The oil pan liquid level is in the "HFb" scale range or tends to the "HFb" scale range, and is within the set value range (HFb_L, HFb_H); The liquid level of the reservoir is in the "HCb" scale or tends to the "HCb" scale range, and is within the set value range (HCb_L, HCb_H); 2) After the engine is started and running normally: The oil pan level is within the set value range (HF0, HF3). When the oil pan level is higher than "HF0" or lower than "HF3", it indicates that the oil pan level is higher / lower than normal. The liquid level of the memory is within the set value range (HC0, HC3). When the oil level in the memory is higher than "HC0" or lower than "HC3", it indicates that the memory liquid level is higher / lower than the normal value.

2. The engine oil lubrication control method based on bidirectional circulation according to claim 1, characterized in that: The condition for starting the dual pump cycle is that the engine oil pan oil level and the storage oil level values are within the initial value range of the set normal working range, and the hydraulic pilot control handle is in the unlocked and actuated state.

3. The engine oil lubrication control method based on bidirectional circulation according to claim 2, characterized in that: The dual pump cycle is started to keep the oil level in the oil pan and the oil level in the reservoir within a set value range, specifically including: Start the circulation pump A to pump the oil from the engine oil pan to the remote storage until the oil level in the oil pan drops to the set value range and the oil level in the storage rises to the set value range; Start circulation pump B to pump the oil in the remote storage to the engine oil pan until the oil level in the oil pan rises to the set value range and the oil level in the storage falls to the set value range; The time interval between the operation of circulating pumps A and B is determined by the oil level in the engine oil pan and the oil level in the reservoir.

4. An engine oil lubrication control system based on a bidirectional circulation, implemented by the engine oil lubrication control method based on a bidirectional circulation according to claim 1, characterized in that: The system includes: MC whole machine module control unit, ECM oil system module control unit, dual pump circulation management system module control unit and data monitoring and information recording control module unit; The MC whole machine module control unit is used to continuously process the data information sent by the ECM oil system module control unit and the dual pump circulation management system module control unit, and to record data and alarm information in a timely and effective manner; The ECM oil system module control unit is used to monitor the oil level in the engine oil pan and remote storage in real time during engine operation, transmit the parameters to the communication network, and send an alarm when the main oil control parameters are abnormal, and adjust the engine operating status; The dual-pump circulation management system module control unit is used to receive data signals sent by the MC whole machine module control unit and the ECM oil system module control unit; when the detected data exceeds the set value of the dual-pump circulation management system module control unit, it sends an alarm message; when the detected oil level information of the engine oil pan and the remote storage is insufficient or overfull, it controls the interactive circulation between the oil level of the oil pan and the oil in the remote storage according to the oil level information; The data monitoring and information recording control module unit is used to record the data of the oil management system throughout its life cycle, providing a basis for the analysis of the engine's life cycle; The MC whole machine module control unit, ECM oil system module control unit, dual pump circulation management system module control unit and data monitoring and information recording control module unit are all connected to the communication network to transmit data information.

5. The engine oil lubrication control system based on bidirectional circulation according to claim 4, characterized in that: The system also includes an information display and alarm control module unit. When the dual-pump circulation management system module control unit detects that the data sent by the MC whole machine module control unit and the ECM oil system module control unit are abnormal, it is fed back to the information display and alarm control module unit. The information display and alarm control module unit records the data and alarms to remind the driver, and sends data to the controller to prohibit engine starting.

6. The engine oil lubrication control system based on bidirectional circulation according to claim 4, characterized in that: The dual-pump circulation management system module control unit consists of two groups of working pumps, circulation pump A and circulation pump B, a detection device, a logic controller and a circulation pipeline.

7. The engine oil lubrication control system based on bidirectional circulation according to claim 5, characterized in that: The dual-pump circulation management system module control unit is also used to: prompt whether the detected engine oil pan oil level and storage oil level information are normal or not by controlling the indicator light and the alarm prompt sound, specifically: Before starting the engine: When the oil level in the engine oil pan and the oil level in the storage of the dual pump circulation management system module control unit are normal, the working indicator light is green and always on, and there is no alarm prompt sound; When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and storage oil level, the working indicator light turns red and stays on, and an alarm sound is emitted; After the engine is started and during operation: When the dual-pump circulation management system module control unit detects that the engine oil pan oil level and the storage oil level are normal, the working indicator light turns green and flashes according to a specific cycle, and there is no alarm prompt sound; When the dual-pump circulation management system module control unit detects abnormalities in the engine oil pan oil level and the storage oil level, the working indicator light turns red and flashes at a specific cycle, and an alarm sound is issued.

8. The engine oil lubrication control system based on bidirectional circulation according to claim 4, characterized in that: The system also includes a GPS remote data transmission module control unit, which is used to upload timely and effective data records and alarm information of the MC complete module control unit to the remote data system.

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