Low temperature control method for variable displacement engine oil pump system, vehicle, and electronic device

Abstract

The embodiment of the application discloses a low-temperature control method of a variable displacement engine oil pump system, a vehicle and electronic equipment. The low-temperature control method of the variable displacement engine oil pump system comprises the following steps: after the engine is started, if the ambient temperature detected by an ECU control module is less than a first preset temperature, a low-temperature control strategy is executed; the low-temperature control strategy comprises the following steps: if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is less than or equal to a second preset temperature, the oil pressure of the variable displacement engine oil pump is controlled to work at a preset pressure until the oil temperature of the engine is greater than the second preset temperature; if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is in a preset temperature interval, the oil pressure of the variable displacement engine oil pump is controlled to work at the preset pressure and a preset time. The application greatly improves the engine low-temperature oil pressure establishment time, accelerates the engine oil temperature rising speed, and reduces the wear of the piston ring and other moving parts.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of variable displacement oil pump system control, and in particular to a low-temperature control method for a variable displacement oil pump system, a vehicle, and an electronic device. Background Art

[0002] Over 70% of engine wear and tear comes from cold-temperature starting. How variable pump lubrication systems reduce engine wear and tear in cold conditions significantly impacts engine reliability. Existing variable pump lubrication systems lack effective control for cold-temperature operating conditions. Summary of the Invention

[0003] The present invention provides a low-temperature control method for a variable-displacement oil pump system, a vehicle, and an electronic device, thereby significantly improving the time required to establish low-temperature oil pressure, while accelerating the oil heating rate and reducing the wear of moving parts such as piston rings.

[0004] According to one aspect of the present invention, a low-temperature control method for a variable-displacement oil pump system is provided. The variable-displacement oil pump system includes: a variable-displacement oil pump, a proportional solenoid valve, an oil passage, a long-pass oil passage, a sensor, and an ECU control module. The variable-displacement oil pump is connected to the oil passage and the long-pass oil passage, respectively. The oil passage is connected to a main oil passage. The long-pass oil passage is connected to the proportional solenoid valve. The proportional solenoid valve is connected to the ECU control module. The ECU control module is connected to the sensor.

[0005] After the engine is started, when the ambient temperature detected by the ECU control module is lower than the first preset temperature, the low temperature control strategy is executed;

[0006] The low temperature control strategy includes:

[0007] If the ambient temperature is lower than a first preset temperature and the engine oil temperature is lower than or equal to a second preset temperature, controlling the oil pressure of the variable displacement oil pump to operate at a preset pressure until the engine oil temperature exceeds the second preset temperature;

[0008] If the ambient temperature is lower than the first preset temperature and the oil temperature of the engine is within a preset temperature range, the oil pressure of the variable displacement oil pump is controlled to operate at a preset pressure and for a preset time.

[0009] Optionally, if the ambient temperature is greater than the first preset temperature or the engine oil temperature is greater than a third preset temperature, the low temperature control strategy is turned off.

[0010] Optionally, the first preset temperature is 5°C, the second preset temperature is 30°C, and the third preset temperature is 60°C.

[0011] Optionally, the preset temperature range is 30-60℃, the preset pressure is 450kPa±30kPa, and the preset time is 5 minutes.

[0012] According to another aspect of the present application, there is provided a variable displacement oil pump system, comprising a variable displacement oil pump, a proportional electromagnetic valve, an oil gallery, a long-pass oil gallery, a sensor and an ECU control module.

[0013] The variable displacement oil pump is connected to the oil gallery and the long-pass oil gallery, respectively, the oil gallery is connected to a main oil gallery, and the long-pass oil gallery is used to control the variable displacement oil pump to work in a high-pressure mode.

[0014] The long-pass oil gallery is connected to the proportional electromagnetic valve, which is used to control the communication area of the oil passage in the oil gallery and the feedback oil pressure of the variable displacement oil pump, thereby realizing the variable control of the oil in the variable displacement oil pump.

[0015] The proportional electromagnetic valve is connected to the ECU control module, and the ECU control module is connected to the sensor, which is used to obtain the oil pan oil temperature of the variable displacement oil pump and send it to the ECU control module, and the ECU control module is used to execute a low-temperature control strategy.

[0016] Optionally, the variable displacement oil pump comprises a feedback cavity and a variable displacement slider, the variable displacement slider is arranged in the feedback cavity, and the feedback cavity is used to push the variable displacement slider to move according to the feedback oil pressure, thereby realizing the variable control of the oil in the variable displacement oil pump.

[0017] Optionally, the ECU control module comprises a temperature sensor, which is used to detect the ambient temperature.

[0018] According to another aspect of the present application, there is also provided a vehicle comprising the variable displacement oil pump system of any one of the above aspects.

[0019] Optionally, the vehicle further comprises an instrument panel, which is used to display the alarm signal and the fault signal of the variable displacement oil pump system.

[0020] According to another aspect of the present application, there is also provided an electronic device comprising one or more processors;

[0021] a memory for storing one or more programs;

[0022] When the one or more programs are executed by the one or more processors, the one or more processors implement the low-temperature control method for a variable displacement oil pump system according to an embodiment of the present invention.

[0023] The technical solution of the embodiments of the present invention, through innovative design of low-temperature starting oil pressure control, significantly improves the low-temperature oil pressure build-up time, while also accelerating the oil temperature rise rate and reducing wear on moving parts such as piston rings. This improves engine reliability and reduces fuel consumption without increasing costs. In summary, the present invention addresses the problem of prior art's lack of effective control for low-temperature operating conditions.

[0024] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a structural schematic diagram of a variable displacement oil pump system provided according to an embodiment of the present invention;

[0027] Figure 2 1 is a flow chart of a low-temperature control method for a variable displacement oil pump system according to an embodiment of the present invention;

[0028] Figure 3 is a structural diagram of an electronic device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0031] Figure 1 is a structural schematic diagram of a variable displacement engine oil pump system according to an embodiment of the present application, referring to Figure 1 The embodiment of the present application provides a low-temperature control method of a variable displacement engine oil pump system, and the variable displacement engine oil pump system comprises a variable displacement engine oil pump 10, a proportional electromagnetic valve 5, an engine oil passage 3, a long-pass oil passage 4, a sensor 7 and an ECU control module 6, the variable displacement engine oil pump 10 is connected with the engine oil passage 3 and the long-pass oil passage 4 respectively, the engine oil passage 3 is connected with a main oil passage 11, the long-pass oil passage 4 is connected with the proportional electromagnetic valve 5, the proportional electromagnetic valve 5 is connected with the ECU control module 6, and the ECU control module 6 is connected with the sensor 7; after the engine is started, if the ambient temperature detected by the ECU control module 6 is less than a first preset temperature, a low-temperature control strategy is executed; the low-temperature control strategy comprises the following steps: if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is less than or equal to a second preset temperature, the engine oil pressure of the variable displacement engine oil pump is controlled to work at a preset pressure until the oil temperature of the engine is greater than the second preset temperature; if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is in a preset temperature interval, the engine oil pressure of the variable displacement engine oil pump is controlled to work at a preset pressure and a preset time.

[0032] Specifically, a temperature sensor is built in the ECU control module 6, and the temperature sensor is used for detecting the ambient temperature. The ECU control module 6 is also connected with an engine oil pressure sensor and an engine oil temperature sensor respectively, the engine oil pressure sensor and the engine oil temperature sensor are both arranged in the main oil passage 11, the engine oil pressure sensor is used for collecting the engine oil pressure in the main oil passage 11 and sending the engine oil pressure to the ECU control module 6, and the engine oil temperature sensor is used for collecting the engine oil temperature in the main oil passage 11 and sending the engine oil temperature to the ECU control module 6. The ECU control module 6 is also connected with an engine speed sensor, the actual speed of the engine is measured through the engine speed sensor, and the actual speed of the engine is sent to the ECU control module 6. The ECU control module 6 can also read the engine load data of the engine through a CAN bus.

[0033] The technical scheme of the embodiment of the present application realizes substantial improvement of low-temperature oil pressure establishment time through innovative design of low-temperature starting oil pressure control strategy, simultaneously accelerates engine oil warming speed, and realizes reduction of wear of moving parts such as piston rings. The engine reliability is improved and oil consumption is reduced under the premise of zero incremental cost. In conclusion, the present application solves the problem that the prior art does not effectively control low-temperature working conditions.

[0034] Optionally, if the ambient temperature is greater than the first preset temperature or the oil temperature of the engine is greater than the third preset temperature, the low-temperature control strategy is closed.

[0035] Optionally, the first preset temperature is 5℃, the second preset temperature is 30℃, and the third preset temperature is 60℃.

[0036] Optionally, the preset temperature range is 30℃-60℃, the preset pressure is 450kPa±30kPa, and the preset time is 5 minutes.

[0037] Specifically, when the ambient temperature is less than 5℃, the low-temperature control strategy is triggered.

[0038] When the ambient temperature is less than 5℃ and the oil temperature is less than or equal to 30℃, the engine oil pressure is controlled to work at 450±30kPa until the oil temperature is greater than 30℃.

[0039] When the ambient temperature is less than 5℃ and the oil temperature is 30-60℃, the engine oil pressure is controlled to work at 450±30kPa for 5 minutes.

[0040] When the ambient temperature is greater than 5℃ or the oil temperature is greater than 60℃, the low-temperature control strategy is closed.

[0041] Figure 2 is a flowchart of a low-temperature control method of a variable displacement engine oil pump system according to the embodiment of the present application, referring to Figure 2 , Figure 2 The whole process of the low-temperature control method of the variable displacement engine oil pump system is exemplarily shown.

[0042] Continuing to refer to Figure 1The embodiment of the present application also provides a variable displacement engine oil pump system, which comprises a variable displacement engine oil pump 10, a proportional electromagnetic valve 5, an engine oil passage 3, a long oil passage 4, a sensor 7 and an ECU control module 6; the variable displacement engine oil pump 10 is connected with the engine oil passage 3 and the long oil passage 4 respectively, the engine oil passage 3 is connected with a main oil passage 11, and the long oil passage 4 is used for controlling the variable displacement engine oil pump 10 to work in a high pressure mode; the long oil passage 4 is connected with the proportional electromagnetic valve 5, the proportional electromagnetic valve 5 is used for controlling the communication area of the engine oil passage 3 and is also used for controlling the feedback oil pressure of the variable displacement engine oil pump 10, so as to realize the variable control of the oil in the variable displacement engine oil pump 10; the proportional electromagnetic valve 5 is connected with the ECU control module 6, the ECU control module 6 is connected with the sensor 7, the sensor 7 is used for obtaining the oil pan engine oil temperature of the variable displacement engine oil pump 10 and sending the oil pan engine oil temperature to the ECU control module 6, and the ECU control module 6 is used for executing a low temperature control strategy.

[0043] Since the variable displacement engine oil pump system is used for executing the low temperature control method of the variable displacement engine oil pump system provided by any embodiment of the present application, the variable displacement engine oil pump system has the same beneficial effects as the low temperature control method of the variable displacement engine oil pump system, and details are not repeated here.

[0044] Continuing to refer to Figure 1 Optionally, the variable displacement engine oil pump 10 comprises a feedback cavity 2 and a variable displacement slider 1, the variable displacement slider 1 is arranged in the feedback cavity 2, and the feedback cavity 2 is used for pushing the variable displacement slider 1 to move according to the feedback oil pressure, so as to realize the variable control of the oil in the variable displacement engine oil pump 10.

[0045] Specifically, the ECU control module 6 steplessly adjusts the pump oil pressure of the variable displacement engine oil pump 10 by controlling the opening degree of the proportional electromagnetic valve 5, and the specific control principle is as follows: the proportional electromagnetic valve 5 controls the communication area of the engine oil passage 3, and then controls the feedback oil pressure in the feedback cavity 2, the feedback oil pressure pushes the variable displacement slider 1 to move, so as to realize the variable control of the oil in the variable displacement engine oil pump.

[0046] Optionally, the ECU control module comprises a temperature sensor, and the temperature sensor is used for detecting the ambient temperature.

[0047] The embodiment of the present application also provides a vehicle, which comprises the variable displacement engine oil pump system in the embodiment of the present application.

[0048] Since the vehicle comprises the variable displacement engine oil pump system provided by any embodiment of the present application, the vehicle has the same beneficial effects as the variable displacement engine oil pump system, and details are not repeated here.

[0049] Optionally, the vehicle further comprises an instrument panel, and the instrument panel is used for displaying an alarm signal and a fault signal of the variable displacement engine oil pump system.

[0050] Specifically, the instrument panel can be an oil pump diagnostic system, which consists of sensors, diagnostic modules in the ECU, and alarm lights. The instrument alarm lights are connected to the ECU signals. The ECU receives the detection signals from the sensor group, and after analysis and judgment by the alarm strategy module inside the ECU, the control signal is sent to the instrument alarm light to display the working status of the lubrication system. Whether the lubrication system is working abnormally can be determined by the display status of the instrument alarm light.

[0051] An embodiment of the present invention also provides an electronic device, which includes one or more processors; a memory for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors implement a low-temperature control method for a variable displacement oil pump system as in an embodiment of the present invention.

[0052] Figure 3 is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention, with reference to Figure 3 , Figure 3 A block diagram of an exemplary electronic device 12 suitable for implementing embodiments of the present invention is shown. Figure 3 The electronic device 12 shown is only an example and should not limit the functionality and scope of use of the embodiments of the present invention.

[0053] like Figure 3 As shown, electronic device 12 is implemented as a general electronic device. Components of electronic device 12 may include, but are not limited to, one or more processors 16, memory 28, and a bus 18 connecting various system components (including memory 28 and processor 16). Processor 16 may include, but is not limited to, an AI processor.

[0054] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0055] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0056] The memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be configured to read and write non-removable, non-volatile magnetic media ( Figure 3 Not shown, often called a "hard drive"). Although Figure 3 Not shown, a magnetic disk drive for reading and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

[0057] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 42 generally perform the functions and / or methodologies of the embodiments described herein.

[0058] The electronic device 12 may also communicate with one or more external devices 14 (e.g., a keyboard, a pointing device, a display 24, etc.), one or more devices that enable a user to interact with the electronic device 12, and / or any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed through an input / output (I / O) interface 22. Furthermore, the electronic device 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 20. As shown, the network adapter 20 communicates with the other modules of the electronic device 12 via the bus 18. It should be understood that although Figure 3 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 12, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0059] The processor 16 of the electronic device 12 executes various functional applications and data processing by running programs stored in the memory 28, such as implementing the low-temperature control method for a variable-displacement oil pump system provided in an embodiment of the present invention. The low-temperature control method for a variable-displacement oil pump system may specifically include: after the engine is started, if the ambient temperature detected by the ECU control module is less than a first preset temperature, executing a low-temperature control strategy; the low-temperature control strategy includes: if the ambient temperature is less than the first preset temperature and the engine oil temperature is less than or equal to a second preset temperature, controlling the oil pressure of the variable-displacement oil pump to operate at a preset pressure until the engine oil temperature exceeds the second preset temperature; if the ambient temperature is less than the first preset temperature and the engine oil temperature is within a preset temperature range, controlling the oil pressure of the variable-displacement oil pump to operate at a preset pressure and for a preset time.

[0060] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A low temperature control method for a variable displacement oil pump system, characterized in that: The variable displacement oil pump system includes: a variable displacement oil pump, a proportional solenoid valve, an oil passage, a long-pass oil passage, a sensor, and an ECU control module, wherein the variable displacement oil pump is connected to the oil passage and the long-pass oil passage, respectively, the oil passage is connected to the main oil passage, the long-pass oil passage is connected to the proportional solenoid valve, the proportional solenoid valve is connected to the ECU control module, and the ECU control module is connected to the sensor; After the engine is started, when the ambient temperature detected by the ECU control module is lower than the first preset temperature, the low temperature control strategy is executed; The low temperature control strategy includes: If the ambient temperature is lower than a first preset temperature and the engine oil temperature is lower than or equal to a second preset temperature, controlling the oil pressure of the variable displacement oil pump to operate at a preset pressure until the engine oil temperature exceeds the second preset temperature; If the ambient temperature is lower than the first preset temperature and the oil temperature of the engine is within a preset temperature range, the oil pressure of the variable displacement oil pump is controlled to operate at a preset pressure and for a preset time.

2. The method according to claim 1, characterized in that If the ambient temperature is greater than the first preset temperature or the engine oil temperature is greater than a third preset temperature, the low temperature control strategy is turned off.

3. The method according to claim 2, characterized in that The first preset temperature is 5°C, the second preset temperature is 30°C, and the third preset temperature is 60°C.

4. The method according to claim 1, wherein The preset temperature range is 30° C. to 60° C., the preset pressure is 450 kPa±30 kPa, and the preset time is 5 minutes.

5. A variable displacement oil pump system, characterized in that: include: Variable displacement oil pump, proportional solenoid valve, oil channel, long-pass oil channel, sensor and ECU control module; The variable displacement oil pump is connected to the oil passage and the long oil passage respectively, the oil passage is connected to the main oil passage, and the long oil passage is used to control the variable displacement oil pump to operate in a high pressure mode; The long oil passage is connected to the proportional solenoid valve, which is used to control the interconnected area of ​​the oil passage in the oil passage and to control the feedback oil pressure of the variable displacement oil pump, thereby achieving variable control of the oil in the variable displacement oil pump; The proportional solenoid valve is connected to the ECU control module, and the ECU control module is connected to the sensor. The sensor is used to obtain the oil pan oil temperature of the variable displacement oil pump and send it to the ECU control module. The ECU control module is used to execute the low-temperature control method described in any one of claims 1-4.

6. The variable displacement oil pump system according to claim 5, characterized in that: The variable displacement oil pump includes a feedback chamber and a variable slider. The variable slider is arranged in the feedback chamber. The feedback chamber is used to push the variable slider to move according to the feedback oil pressure to achieve variable control of the oil in the variable displacement oil pump.

7. The variable displacement oil pump system according to claim 5, characterized in that: The ECU control module includes a temperature sensor, which is used to detect the ambient temperature.

8. A vehicle, characterized in that: The vehicle includes the variable displacement oil pump system according to any one of claims 5-7.

9. The vehicle according to claim 8, characterized in that The vehicle further includes an instrument panel for displaying warning signals and fault signals of the variable displacement oil pump system.

10. An electronic device, characterized in that: include: one or more processors; a memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the low-temperature control method for the variable displacement oil pump system according to any one of claims 1 to 4.

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