A pre-lubrication starting control method and device applied to an engine

Abstract

This invention relates to the field of vehicle powertrain engineering technology, and more particularly to a pre-lubrication start-up control method and device for engines. The method includes: detecting the operating state of a high-pressure oil pump; when the high-pressure oil pump is in a pressurized state, acquiring the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage, and judging the lubrication process based on the lubrication working time and / or the oil pressure data and preset lubrication control conditions to obtain a lubrication process judgment result; when the lubrication process judgment result indicates that pre-lubrication has been completed, delivering fuel to the injector through the high-pressure oil pump to enable the injector to operate normally, thereby enabling the engine to ignite and start. This invention can improve the oil film coverage during engine start-up, reduce the situation where engine components operate under dry or semi-dry friction conditions, and thus reduce wear on engine components.

Description

Technical Field

[0001] This invention relates to the field of vehicle powertrain engineering technology, and in particular to a pre-lubrication start-up control method and device for engines. Background Technology

[0002] In both gasoline-powered and hybrid vehicles, pre-lubrication is typically performed before starting the engine to reduce wear on engine components and extend their lifespan. After the driver activates the starter motor via the ignition switch (usually the ignition key or button), the starter motor drives the oil pump through the crankshaft (or camshaft), drawing lubricating oil from the oil pan and delivering it to various lubrication points through the main oil passages. As the oil pump operates, the lubricating oil gradually fills the main oil passages and branch passages, gradually building up oil pressure and forming an oil film on the surfaces of moving parts. This reduces direct contact between metal parts, lowers friction, and minimizes wear.

[0003] However, in practice, it has been found that engine ignition and engine component lubrication are usually performed simultaneously. However, the oil pump needs a certain amount of time to deliver lubricating oil to each lubrication point. During this time, the moving parts are not fully lubricated, and a complete oil film has not yet formed between the parts. The relevant parts may operate under dry or semi-dry friction conditions, which is prone to wear. At the same time, the high-pressure gas from combustion in the cylinder is transmitted to the friction surfaces of the moving parts through the piston, connecting rod, crankshaft, and other components, which further increases wear.

[0004] Therefore, how to improve the coverage of the pre-lubricating oil film during engine startup, thereby reducing the wear of engine components, is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This invention provides a pre-lubrication start-up control method and device for engines, which can improve the pre-lubrication oil film coverage during engine start-up, thereby reducing the wear of engine components.

[0006] To address the aforementioned technical problems, the first aspect of this invention discloses a pre-lubrication start-up control method for an engine, the engine comprising a high-pressure oil pump, an oil pump, an injector, and a lubrication oil passage, the method comprising:

[0007] Detect the operating status of the high-pressure oil pump;

[0008] When the high-pressure oil pump is in pressurized state, the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage are acquired, and the lubrication process is judged based on the lubrication working time and / or the oil pressure data and the preset lubrication control conditions to obtain the lubrication process judgment result.

[0009] When the lubrication process determination result indicates that pre-lubrication has been completed, fuel is delivered to the injector through the high-pressure oil pump to enable the injector to work normally, so that the engine can be ignited and started.

[0010] As an optional implementation, in the first aspect of the present invention, the step of judging the lubrication process based on the lubrication working time and / or the oil pressure data and preset lubrication control conditions, and obtaining the lubrication process judgment result, includes:

[0011] The lubrication process is judged based on the lubrication working time and the preset lubrication time conditions to obtain the first lubrication judgment result;

[0012] And / or,

[0013] The lubrication process is judged based on the oil pressure data and the preset lubrication oil pressure conditions to obtain a second lubrication judgment result;

[0014] The lubrication control conditions include the lubrication duration conditions and / or the lubrication oil pressure conditions, and the lubrication process judgment results include the first lubrication judgment result and / or the second lubrication judgment result.

[0015] As an optional implementation, in the first aspect of the present invention, the step of judging the lubrication process based on the lubrication working time and a preset lubrication time condition to obtain a first lubrication judgment result includes:

[0016] Obtain the engine shutdown duration and determine whether the shutdown duration is greater than or equal to a first duration threshold.

[0017] If the shutdown time is greater than or equal to the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the second time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0018] If the shutdown time is less than the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the third time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0019] The second duration threshold is greater than the third duration threshold.

[0020] As an optional implementation, in the first aspect of the present invention, the step of determining the lubrication process based on the oil pressure data and preset lubrication oil pressure conditions to obtain a second lubrication determination result includes:

[0021] The current oil pressure value of the lubrication passage is calculated based on the oil pressure data, and it is determined whether the current oil pressure value is greater than or equal to a preset oil pressure threshold.

[0022] If the current oil pressure value is greater than or equal to the preset oil pressure threshold, a second lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a second lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0023] As an optional implementation, in the first aspect of the present invention, when the lubrication process judgment result includes the first lubrication judgment result and the second lubrication judgment result, if the first lubrication judgment result indicates that pre-lubrication has been completed and the second lubrication judgment result indicates that pre-lubrication has been completed, then the lubrication process judgment result indicates that pre-lubrication has been completed; otherwise, the lubrication process judgment result indicates that pre-lubrication has not been completed.

[0024] A second aspect of the present invention discloses a pre-lubrication start-up control device for an engine, the engine including a high-pressure oil pump, an oil pump, an injector, and a lubrication oil passage, the device comprising:

[0025] The status detection module is used to detect the working status of the high-pressure oil pump;

[0026] The lubrication judgment module is used to acquire the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage when the high-pressure oil pump is in the pressurized state, and to judge the lubrication process based on the lubrication working time and / or the oil pressure data and the preset lubrication control conditions, so as to obtain the lubrication process judgment result.

[0027] The fuel injection control module is used to deliver fuel to the fuel injector through the high-pressure fuel pump when the lubrication process judgment result indicates that pre-lubrication has been completed, so that the fuel injector can work normally and the engine can be ignited and started.

[0028] As an optional implementation, in a second aspect of the present invention, the lubrication judgment module judges the lubrication process based on the lubrication working time and / or the oil pressure data and preset lubrication control conditions, and the specific method for obtaining the lubrication process judgment result includes:

[0029] The lubrication process is judged based on the lubrication working time and the preset lubrication time conditions to obtain the first lubrication judgment result;

[0030] And / or,

[0031] The lubrication process is judged based on the oil pressure data and the preset lubrication oil pressure conditions to obtain a second lubrication judgment result;

[0032] The lubrication control conditions include the lubrication duration conditions and / or the lubrication oil pressure conditions, and the lubrication process judgment results include the first lubrication judgment result and / or the second lubrication judgment result.

[0033] As an optional implementation, in a second aspect of the present invention, the lubrication judgment module determines the lubrication process based on the lubrication working time and a preset lubrication time condition to obtain a first lubrication judgment result in the following specific ways:

[0034] Obtain the engine shutdown duration and determine whether the shutdown duration is greater than or equal to a first duration threshold.

[0035] If the shutdown time is greater than or equal to the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the second time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0036] If the shutdown time is less than the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the third time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0037] The second duration threshold is greater than the third duration threshold.

[0038] As an optional implementation, in the second aspect of the present invention, the lubrication judgment module determines the lubrication process based on the oil pressure data and preset lubrication oil pressure conditions, and obtains a second lubrication judgment result in the following specific ways:

[0039] The current oil pressure value of the lubrication passage is calculated based on the oil pressure data, and it is determined whether the current oil pressure value is greater than or equal to a preset oil pressure threshold.

[0040] If the current oil pressure value is greater than or equal to the preset oil pressure threshold, a second lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a second lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0041] As an optional implementation, in a second aspect of the present invention, when the lubrication process judgment result includes the first lubrication judgment result and the second lubrication judgment result, if the first lubrication judgment result indicates that pre-lubrication has been completed and the second lubrication judgment result indicates that pre-lubrication has been completed, then the lubrication process judgment result indicates that pre-lubrication has been completed; otherwise, the lubrication process judgment result indicates that pre-lubrication has not been completed.

[0042] As an optional implementation, in a second aspect of the present invention, the engine is an electronically controlled engine equipped with a fuel injection solenoid valve, and the fuel injection control module is integrated with the fuel injection solenoid valve.

[0043] As an optional implementation, in a second aspect of the invention, the engine is a mechanical engine equipped with a kill valve, and the fuel injection control module is integrated with the kill valve.

[0044] A third aspect of the invention discloses another version, wherein the apparatus comprises:

[0045] Memory containing executable program code;

[0046] A processor coupled to the memory;

[0047] The processor calls the executable program code stored in the memory to execute the pre-lubrication start control method for engines disclosed in the first aspect of the present invention.

[0048] The fourth aspect of the present invention discloses a pre-lubrication start control system, the system comprising an engine and a pre-lubrication start control device, the engine comprising a high-pressure oil pump, an oil pump, an injector and a lubrication oil passage, the pre-lubrication start control device being electrically connected to the engine, and the pre-lubrication start control device being used to execute the pre-lubrication start control method for an engine disclosed in the first aspect of the present invention.

[0049] The fifth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked by a processor, are used to execute the pre-lubrication start-up control method for an engine disclosed in the first aspect of the present invention.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] Before starting the engine, the system checks whether the high-pressure oil pump is pressurizing the fuel. If so, it acquires the lubrication duration of the oil pump and / or the oil pressure data of the lubrication channels. Based on these data, it determines whether pre-lubrication has been completed. Only after confirming that pre-lubrication has been completed is fuel injection and ignition permitted to start the engine. Therefore, this invention can improve the pre-lubrication oil film coverage during engine startup, reducing the amount of engine components operating under dry or semi-dry friction conditions, thereby reducing wear on engine components. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic flowchart of a pre-lubrication start-up control method for an engine disclosed in an embodiment of the present invention;

[0054] Figure 2 This invention discloses a pre-lubrication start control device for an engine.

[0055] Figure 3 This is another pre-lubrication start control device for engines disclosed in the embodiments of the present invention. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0058] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] In both gasoline-powered and hybrid vehicles, pre-lubrication is typically performed before starting the engine to reduce wear on engine components and extend their lifespan. After the driver activates the starter motor via the ignition switch (usually the ignition key or button), the starter motor drives the oil pump through the crankshaft (or camshaft), drawing lubricating oil from the oil pan and delivering it to various lubrication points through the main oil passages. As the oil pump operates, the lubricating oil gradually fills the main oil passages and branch passages, gradually building up oil pressure and forming an oil film on the surfaces of moving parts. This reduces direct contact between metal parts, lowers friction, and minimizes wear.

[0060] However, in practice, it has been found that engine ignition and engine component lubrication are usually performed simultaneously. However, the oil pump needs a certain amount of time to deliver lubricating oil to each lubrication point. During this time, the moving parts are not fully lubricated, and a complete oil film has not yet formed between the parts. The relevant parts may operate under dry or semi-dry friction conditions, which is prone to wear. At the same time, the high-pressure gas from combustion in the cylinder is transmitted to the friction surfaces of the moving parts through the piston, connecting rod, crankshaft, and other components, which further increases wear.

[0061] Therefore, how to improve the coverage of the pre-lubricating oil film during engine startup, thereby reducing the wear of engine components, is a technical problem that urgently needs to be solved.

[0062] To address the aforementioned technical problems, this invention discloses a pre-lubrication start-up control method and apparatus for engines, aiming to improve the pre-lubrication oil film coverage during engine start-up, thereby reducing wear on engine components. Detailed descriptions follow.

[0063] Example 1

[0064] Please see Figure 1 , Figure 1 This is a schematic flowchart of a pre-lubrication start-up control method for an engine, as disclosed in an embodiment of the present invention. Figure 1 The method shown can be applied to a pre-lubrication start-up control device that controls engine start-up based on the pre-lubrication process. Furthermore, this pre-lubrication start-up control device can be integrated into the vehicle engine or exist independently of it. The engine includes a high-pressure oil pump, an oil pump, injectors, and lubrication passages, such as... Figure 1 As shown, the pre-lubrication start-up control method for engines disclosed in this embodiment of the invention includes, but is not limited to, the following operations:

[0065] 101. Check the working status of the high-pressure oil pump.

[0066] 102. When the high-pressure oil pump is in pressurized state, acquire the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage, and judge the lubrication process based on the lubrication working time and / or oil pressure data and the preset lubrication control conditions to obtain the lubrication process judgment result.

[0067] 103. When the lubrication process judgment result indicates that pre-lubrication has been completed, fuel is delivered to the injector through the high-pressure oil pump to enable the injector to work normally, so that the engine can be ignited and started.

[0068] The traditional engine starting and lubrication process typically unfolds as follows: The driver activates the starter motor via a ignition switch (usually an ignition key or button). The starter motor then drives the oil pump via the crankshaft (or camshaft), drawing lubricating oil from the oil pan and delivering it through the main oil passages to various lubrication points. As the oil pump operates, the lubricating oil gradually fills the main oil passages and branch lines, gradually building up oil pressure and forming an oil film on the surfaces of moving parts. This reduces direct contact between metal parts, lowers friction, and minimizes wear. Simultaneously, the starter motor also drives the fuel pump to draw fuel from the tank and deliver it through the fuel filter to the high-pressure fuel pump. The high-pressure fuel pump pressurizes the fuel and delivers it through fuel lines to the fuel injectors. The fuel injectors spray high-pressure fuel into the engine cylinders, forming fine droplets for mixing with air and combustion, providing energy for engine operation. Once the engine is started and operating normally, the starter motor automatically disconnects and stops working.

[0069] In this embodiment of the invention, before starting the engine, it is detected whether the high-pressure oil pump is in the working state of pressurizing fuel. If so, the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage are obtained. Based on the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage, it is determined whether pre-lubrication has been completed. Only after it is determined that pre-lubrication has been completed is fuel injection and ignition allowed to start the engine.

[0070] It is evident that the present invention can improve the pre-lubricated oil film coverage during engine startup, reduce the number of engine components operating under dry or semi-dry friction conditions, and thus reduce wear on engine components.

[0071] In an optional embodiment, the lubrication process is determined based on the lubrication duration and / or oil pressure data, as well as preset lubrication control conditions, to obtain a lubrication process determination result, which may include:

[0072] The lubrication process is judged based on the lubrication working time and the preset lubrication time conditions to obtain the first lubrication judgment result;

[0073] And / or,

[0074] The lubrication process is judged based on the oil pressure data and the preset lubrication oil pressure conditions to obtain the second lubrication judgment result;

[0075] The lubrication control conditions include lubrication duration conditions and / or lubrication oil pressure conditions, and the lubrication process judgment results include a first lubrication judgment result and / or a second lubrication judgment result.

[0076] In this embodiment of the invention, when the lubrication control conditions only include lubrication duration conditions, the lubrication process can be judged based solely on the lubrication working duration and the lubrication duration conditions, and the lubrication process judgment result only includes the first lubrication judgment result; when the lubrication control conditions only include lubrication oil pressure conditions, the lubrication process can be judged based solely on the oil pressure data and the preset lubrication oil pressure conditions, and the lubrication process judgment result only includes the second lubrication judgment result; when the lubrication control conditions include both lubrication duration conditions and lubrication oil pressure conditions, the lubrication process can be judged based on both the lubrication working duration and the preset lubrication duration conditions, as well as the oil pressure data and the preset lubrication oil pressure conditions, and the lubrication process judgment result includes the first lubrication judgment result and the second lubrication judgment result.

[0077] In an optional embodiment, determining the lubrication process based on the lubrication duration and a preset lubrication duration condition to obtain a first lubrication determination result may include:

[0078] Obtain the engine shutdown duration and determine whether the shutdown duration is greater than or equal to the first duration threshold.

[0079] If the shutdown time is greater than or equal to the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the second time threshold. If so, the first lubrication judgment result, which indicates that pre-lubrication has been completed, is obtained; otherwise, the first lubrication judgment result, which indicates that pre-lubrication has not been completed, is obtained.

[0080] If the shutdown time is less than the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the third time threshold. If so, the first lubrication judgment result, which indicates that pre-lubrication has been completed, is obtained; otherwise, the first lubrication judgment result, which indicates that pre-lubrication has not been completed, is obtained.

[0081] The second duration threshold is greater than the third duration threshold.

[0082] During vehicle use, if the vehicle is not started for a period of time, due to gravity, the lubricating oil in the engine lubrication system will flow to the oil pan, resulting in insufficient lubrication of moving parts. During pre-lubrication, the oil pump needs more time to deliver lubricating oil to various components. If the engine is started before sufficient lubrication time, it will also increase the wear and tear on various components.

[0083] As can be seen, in this embodiment of the invention, the engine needs a longer pre-lubrication time based on the engine shutdown time, and the current lubrication time is determined to meet the pre-lubrication completion requirements based on a preset time threshold, thereby improving the oil film coverage of pre-lubrication when the engine starts and reducing component wear.

[0084] In an optional embodiment, the lubrication process is determined based on oil pressure data and preset lubrication oil pressure conditions to obtain a second lubrication determination result, which may include:

[0085] Calculate the current oil pressure value of the lubrication passage based on the oil pressure data, and determine whether the current oil pressure value is greater than or equal to the preset oil pressure threshold.

[0086] If the current oil pressure value is greater than or equal to the preset oil pressure threshold, a second lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a second lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0087] In this embodiment of the invention, when the oil pressure in the lubrication channel reaches a preset threshold, it is determined that pre-lubrication has been completed, and then the injector is allowed to inject oil and ignite to start the engine.

[0088] In an optional embodiment, when the lubrication process judgment result includes a first lubrication judgment result and a second lubrication judgment result, if the first lubrication judgment result indicates that pre-lubrication has been completed and the second lubrication judgment result indicates that pre-lubrication has been completed, then the lubrication process judgment result indicates that pre-lubrication has been completed; otherwise, the lubrication process judgment result indicates that pre-lubrication has not been completed.

[0089] When lubrication control conditions include lubrication duration and lubrication oil pressure, the lubrication duration must reach a preset duration threshold and the lubrication oil pressure must reach a preset oil pressure threshold before pre-lubrication can be determined to be complete. This improves the oil film coverage of pre-lubrication during engine startup and reduces component wear.

[0090] Example 2

[0091] Please see Figure 2 , Figure 2 This is a pre-lubrication start-up control device for an engine disclosed in an embodiment of the present invention. Figure 2 The pre-lubrication start control device shown is used to implement the pre-lubrication start control method for engines described in Embodiment 1. Furthermore, this pre-lubrication start control device can be integrated into the vehicle engine or exist independently of the vehicle engine. The engine includes a high-pressure oil pump, an oil pump, injectors, and lubrication oil passages, such as... Figure 2 As shown, the pre-lubrication start-up control device for engines disclosed in this embodiment of the invention includes, but is not limited to, the following modules:

[0092] Status detection module 201 is used to detect the working status of the high-pressure oil pump;

[0093] The lubrication judgment module 202 is used to acquire the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage when the high-pressure oil pump is in the pressurization state, and to judge the lubrication process based on the lubrication working time and / or oil pressure data and the preset lubrication control conditions, and to obtain the lubrication process judgment result.

[0094] The fuel injection control module 203 is used to deliver fuel to the fuel injector through a high-pressure oil pump when the lubrication process judgment result indicates that pre-lubrication has been completed, so that the fuel injector can work normally and the engine can be ignited and started.

[0095] The traditional engine starting and lubrication process typically unfolds as follows: The driver activates the starter motor via a ignition switch (usually an ignition key or button). The starter motor then drives the oil pump via the crankshaft (or camshaft), drawing lubricating oil from the oil pan and delivering it through the main oil passages to various lubrication points. As the oil pump operates, the lubricating oil gradually fills the main oil passages and branch lines, gradually building up oil pressure and forming an oil film on the surfaces of moving parts. This reduces direct contact between metal parts, lowers friction, and minimizes wear. Simultaneously, the starter motor also drives the fuel pump to draw fuel from the tank and deliver it through the fuel filter to the high-pressure fuel pump. The high-pressure fuel pump pressurizes the fuel and delivers it through fuel lines to the fuel injectors. The fuel injectors spray high-pressure fuel into the engine cylinders, forming fine droplets for mixing with air and combustion, providing energy for engine operation. Once the engine is started and operating normally, the starter motor automatically disconnects and stops working.

[0096] In this embodiment of the invention, before starting the engine, it is detected whether the high-pressure oil pump is in the working state of pressurizing fuel. If so, the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage are obtained. Based on the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage, it is determined whether pre-lubrication has been completed. Only after it is determined that pre-lubrication has been completed is fuel injection and ignition allowed to start the engine.

[0097] It is evident that the present invention can improve the pre-lubricated oil film coverage during engine startup, reduce the number of engine components operating under dry or semi-dry friction conditions, and thus reduce wear on engine components.

[0098] In an optional embodiment, the lubrication judgment module 202 judges the lubrication process based on the lubrication working time and / or oil pressure data and preset lubrication control conditions. The specific method for obtaining the lubrication process judgment result includes:

[0099] The lubrication process is judged based on the lubrication working time and the preset lubrication time conditions to obtain the first lubrication judgment result;

[0100] And / or,

[0101] The lubrication process is judged based on the oil pressure data and the preset lubrication oil pressure conditions to obtain the second lubrication judgment result;

[0102] The lubrication control conditions include lubrication duration conditions and / or lubrication oil pressure conditions, and the lubrication process judgment results include a first lubrication judgment result and / or a second lubrication judgment result.

[0103] In this embodiment of the invention, when the lubrication control conditions only include lubrication duration conditions, the lubrication process can be judged based solely on the lubrication working duration and the lubrication duration conditions, and the lubrication process judgment result only includes the first lubrication judgment result; when the lubrication control conditions only include lubrication oil pressure conditions, the lubrication process can be judged based solely on the oil pressure data and the preset lubrication oil pressure conditions, and the lubrication process judgment result only includes the second lubrication judgment result; when the lubrication control conditions include both lubrication duration conditions and lubrication oil pressure conditions, the lubrication process can be judged based on both the lubrication working duration and the preset lubrication duration conditions, as well as the oil pressure data and the preset lubrication oil pressure conditions, and the lubrication process judgment result includes the first lubrication judgment result and the second lubrication judgment result.

[0104] In an optional embodiment, the lubrication judgment module 202 judges the lubrication process based on the lubrication working time and preset lubrication time conditions, and obtains the first lubrication judgment result in the following specific ways:

[0105] Obtain the engine shutdown duration and determine whether the shutdown duration is greater than or equal to the first duration threshold.

[0106] If the shutdown time is greater than or equal to the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the second time threshold. If so, the first lubrication judgment result, which indicates that pre-lubrication has been completed, is obtained; otherwise, the first lubrication judgment result, which indicates that pre-lubrication has not been completed, is obtained.

[0107] If the shutdown time is less than the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the third time threshold. If so, the first lubrication judgment result, which indicates that pre-lubrication has been completed, is obtained; otherwise, the first lubrication judgment result, which indicates that pre-lubrication has not been completed, is obtained.

[0108] The second duration threshold is greater than the third duration threshold.

[0109] During vehicle use, if the vehicle is not started for a period of time, due to gravity, the lubricating oil in the engine lubrication system will flow to the oil pan, resulting in insufficient lubrication of moving parts. During pre-lubrication, the oil pump needs more time to deliver lubricating oil to various components. If the engine is started before sufficient lubrication time, it will also increase the wear and tear on various components.

[0110] As can be seen, in this embodiment of the invention, the engine needs a longer pre-lubrication time based on the engine shutdown time, and the current lubrication time is determined to meet the pre-lubrication completion requirements based on a preset time threshold, thereby improving the oil film coverage of pre-lubrication when the engine starts and reducing component wear.

[0111] In an optional embodiment, the lubrication judgment module 202 determines the lubrication process based on oil pressure data and preset lubrication oil pressure conditions, and obtains the second lubrication judgment result in the following specific ways:

[0112] Calculate the current oil pressure value of the lubrication passage based on the oil pressure data, and determine whether the current oil pressure value is greater than or equal to the preset oil pressure threshold.

[0113] If the current oil pressure value is greater than or equal to the preset oil pressure threshold, a second lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a second lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

[0114] In this embodiment of the invention, when the oil pressure in the lubrication channel reaches a preset threshold, it is determined that pre-lubrication has been completed, and then the injector is allowed to inject oil and ignite to start the engine.

[0115] In an optional embodiment, when the lubrication process judgment result includes a first lubrication judgment result and a second lubrication judgment result, if the first lubrication judgment result indicates that pre-lubrication has been completed and the second lubrication judgment result indicates that pre-lubrication has been completed, then the lubrication process judgment result indicates that pre-lubrication has been completed; otherwise, the lubrication process judgment result indicates that pre-lubrication has not been completed.

[0116] When lubrication control conditions include lubrication duration and lubrication oil pressure, the lubrication duration must reach a preset duration threshold and the lubrication oil pressure must reach a preset oil pressure threshold before pre-lubrication can be determined to be complete. This improves the oil film coverage of pre-lubrication during engine startup and reduces component wear.

[0117] In an optional embodiment, the engine is an electronically controlled engine equipped with a fuel injection solenoid valve, and the fuel injection control module 203 is integrated with the fuel injection solenoid valve.

[0118] The fuel injection control module 203 can be configured as an electronic switch and integrated with the fuel injection solenoid valve of the electronically controlled engine, thereby realizing the technical solution of the present invention without modifying other engine components.

[0119] In an optional embodiment, the engine is a mechanical engine equipped with a kill valve, and the fuel injection control module 203 is integrated with the kill valve. The fuel injection control module 203 can be configured as an electronic switch and integrated with the kill valve of the mechanical engine, thereby achieving the technical solution of the present invention without modifying other engine components.

[0120] Example 3

[0121] Please see Figure 3 , Figure 3 This is another pre-lubrication start-up control device for engines disclosed in this embodiment of the invention. Figure 3 The pre-lubrication start control device shown is used to implement the pre-lubrication start control method for engines described in Embodiment 1. Furthermore, this pre-lubrication start control device can be integrated into the vehicle engine or exist independently of the vehicle engine. Figure 3 As shown, another pre-lubrication start-up control device for engines disclosed in this embodiment of the invention includes, but is not limited to:

[0122] Memory 301 storing executable program code;

[0123] Processor 302 coupled to memory 301;

[0124] The processor 302 calls the executable program code stored in the memory 301 to execute some or all of the steps in the pre-lubrication start control method for engines described in Embodiment 1 of the present invention.

[0125] Example 4

[0126] This invention discloses a pre-lubrication start control system, which includes an engine and a pre-lubrication start control device. The engine includes a high-pressure oil pump, an oil pump, an injector, and a lubrication oil passage. The pre-lubrication start control device is electrically connected to the engine and is used to execute some or all of the steps in the pre-lubrication start control method for an engine described in Embodiment 1 of this invention.

[0127] Example 5

[0128] This invention discloses a computer storage medium storing computer instructions. When the computer instructions are invoked by a processor, they are used to execute some or all of the steps in the pre-lubrication start-up control method for engines described in Embodiment 1 of this invention.

[0129] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules. They may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0130] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0131] Finally, it should be noted that the pre-lubrication start-up control method and device for engines disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-lubrication start-up control method for an engine, characterized in that, The engine includes a high-pressure oil pump, an oil pump, an injector, and lubrication channels; the method includes: Detect the operating status of the high-pressure oil pump; When the high-pressure oil pump is in pressurized state, the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage are acquired, and the lubrication process is judged based on the lubrication working time and / or the oil pressure data and the preset lubrication control conditions to obtain the lubrication process judgment result. When the lubrication process judgment result indicates that pre-lubrication has been completed, fuel is delivered to the injector through the high-pressure oil pump to enable the injector to work normally, so that the engine can be ignited and started. The step of determining the lubrication process based on the lubrication duration and / or the oil pressure data and preset lubrication control conditions, and obtaining the lubrication process determination result, includes: The lubrication process is judged based on the lubrication working time and the preset lubrication time conditions to obtain the first lubrication judgment result; And / or, The lubrication process is judged based on the oil pressure data and the preset lubrication oil pressure conditions to obtain a second lubrication judgment result; The lubrication control conditions include the lubrication duration conditions and / or the lubrication oil pressure conditions, and the lubrication process judgment results include the first lubrication judgment result and / or the second lubrication judgment result.

2. The pre-lubrication start-up control method for engines according to claim 1, characterized in that, The step of judging the lubrication process based on the lubrication working time and the preset lubrication time condition to obtain a first lubrication judgment result includes: Obtain the engine shutdown duration and determine whether the shutdown duration is greater than or equal to a first duration threshold. If the shutdown time is greater than or equal to the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the second time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained. If the shutdown time is less than the first time threshold, then it is determined whether the lubrication working time is greater than or equal to the third time threshold. If so, a first lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a first lubrication judgment result indicating that pre-lubrication has not been completed is obtained. The second duration threshold is greater than the third duration threshold.

3. The pre-lubrication start-up control method for engines according to claim 1, characterized in that, The step of judging the lubrication process based on the oil pressure data and preset lubrication oil pressure conditions to obtain a second lubrication judgment result includes: The current oil pressure value of the lubrication passage is calculated based on the oil pressure data, and it is determined whether the current oil pressure value is greater than or equal to a preset oil pressure threshold. If the current oil pressure value is greater than or equal to the preset oil pressure threshold, a second lubrication judgment result indicating that pre-lubrication has been completed is obtained; otherwise, a second lubrication judgment result indicating that pre-lubrication has not been completed is obtained.

4. The pre-lubrication start-up control method for engines according to claim 1, characterized in that, When the lubrication process judgment result includes the first lubrication judgment result and the second lubrication judgment result, if the first lubrication judgment result indicates that pre-lubrication has been completed and the second lubrication judgment result indicates that pre-lubrication has been completed, then the lubrication process judgment result indicates that pre-lubrication has been completed; otherwise, the lubrication process judgment result indicates that pre-lubrication has not been completed.

5. A pre-lubrication start control device for an engine, characterized in that, The apparatus is used to perform the pre-lubrication start-up control method for an engine as described in any one of claims 1 to 4, wherein the engine includes a high-pressure oil pump, an oil pump, an injector, and a lubrication oil passage, and the apparatus includes: The status detection module is used to detect the working status of the high-pressure oil pump; The lubrication judgment module is used to acquire the lubrication working time of the oil pump and / or the oil pressure data of the lubrication oil passage when the high-pressure oil pump is in the pressurized state, and to judge the lubrication process based on the lubrication working time and / or the oil pressure data and the preset lubrication control conditions, so as to obtain the lubrication process judgment result. The fuel injection control module is used to deliver fuel to the fuel injector through the high-pressure fuel pump when the lubrication process judgment result indicates that pre-lubrication has been completed, so that the fuel injector can work normally and the engine can be ignited and started.

6. The pre-lubrication start control device for an engine according to claim 5, characterized in that, The engine is an electronically controlled engine equipped with a fuel injection solenoid valve, and the fuel injection control module is integrated with the fuel injection solenoid valve.

7. The pre-lubrication start control device for an engine according to claim 5, characterized in that, The engine is a mechanical engine equipped with a kill valve, and the fuel injection control module is integrated with the kill valve.

8. A pre-lubrication start control device for an engine, characterized in that, The device includes: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the pre-lubrication start control method for an engine as described in any one of claims 1 to 4.

9. A pre-lubricated start-up control system, characterized in that, The system includes an engine and a pre-lubrication start control device. The engine includes a high-pressure oil pump, an oil pump, an injector, and a lubrication oil passage. The pre-lubrication start control device is electrically connected to the engine and is used to perform the pre-lubrication start control method applied to the engine as described in any one of claims 1 to 4.

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