Transmission preheating system, preheating method, vehicle, and storage medium

Abstract

The present application relates to the technical field of transmission, and especially relates to a transmission preheating system, a preheating method, a vehicle and a storage medium, the transmission preheating system comprising a controller; an exhaust gas preheating pipeline, which is communicated with an exhaust of an engine, and a first on-off electromagnetic valve is arranged on the exhaust gas preheating pipeline, the first on-off electromagnetic valve is electrically connected with the controller, and the controller can control the first on-off electromagnetic valve to open to heat the transmission; a cooling water preheating pipeline, which is used for heat exchange of the engine, and a second on-off electromagnetic valve is arranged on the exhaust gas preheating pipeline, the second on-off electromagnetic valve is electrically connected with the transmission controller, and the controller can control the second on-off electromagnetic valve to open to heat the transmission. The present application can guarantee the driving safety of the whole vehicle, reduce the oil stirring loss, and improve the economy of the whole vehicle.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and more particularly to a transmission preheating system, preheating method, vehicle, and storage medium. Background Technology

[0002] When a car is parked for a period of time in low-temperature conditions, the gear oil, electrical components, assemblies, and parts will all cool to temperatures comparable to the surrounding environment. Furthermore, some electromechanical components will undergo characteristic changes at low temperatures, affecting not only the overall vehicle function and performance but also the reliability of the components themselves. Therefore, when starting a vehicle in low-temperature conditions, to protect relevant components, some vehicle functions will be restricted until the vehicle temperature reaches a certain level (usually defined as below -20°C) to ensure normal operation after the vehicle has warmed up.

[0003] As a mechanical automatic transmission assembly with deep electromechanical coupling, AMT (Automated Manual Transmission) adds electrical components such as TCU, solenoid valves, sensors, wiring harnesses, and switches to the manual transmission. These electrical components are generally sensitive to ambient temperature. In low-temperature environments, changes in resistance and other factors can affect their function, performance, and reliability, thus posing risks to the vehicle's operation. Furthermore, because transmission gear oil has poor fluidity and becomes viscous at low temperatures, before reaching normal operating temperature, it not only affects the lubrication of the various friction pairs within the transmission but also generates significant oil churning losses, impacting the vehicle's fuel economy.

[0004] Therefore, a transmission preheating system, preheating method, vehicle, and storage medium are needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a transmission preheating system, preheating method, vehicle, and storage medium that can ensure the driving safety of the entire vehicle while reducing oil churning loss and improving the economy of the entire vehicle.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The transmission preheating system includes:

[0008] Controller;

[0009] An exhaust gas preheating pipeline is connected to the engine exhaust. A first solenoid valve is installed on the exhaust gas preheating pipeline. The first solenoid valve is electrically connected to the controller. The controller can control the first solenoid valve to open in order to heat the transmission.

[0010] The cooling water preheating pipeline is used for heat exchange with the engine. A second solenoid valve is installed on the exhaust gas preheating pipeline. The second solenoid valve is electrically connected to the transmission controller. The controller can control the second solenoid valve to open to heat the transmission.

[0011] Furthermore, a first temperature sensor is provided on the transmission, and the first temperature sensor is electrically connected to the controller.

[0012] Furthermore, a second temperature sensor is installed on the exhaust gas preheating pipeline, and the second temperature sensor is electrically connected to the controller.

[0013] Furthermore, a third temperature sensor is installed on the cooling water preheating pipeline, and the third temperature sensor is electrically connected to the controller.

[0014] The transmission preheating method, which uses the transmission preheating system described above to heat the transmission, includes the following steps:

[0015] S1. The vehicle is powered on and the engine is ignited;

[0016] S2. The controller collects the transmission oil temperature. If the transmission oil temperature is lower than the first set value, proceed to step S3; otherwise, proceed to step S4.

[0017] S3. Enter the parking heating mode. The controller controls the transmission to remain in neutral. The controller controls the first switch solenoid valve and / or the second switch solenoid valve to open and heat the transmission until the transmission oil temperature is not lower than the first set value and / or the set heating time is reached, and then proceed to the next step.

[0018] S4. When entering driving mode, the controller releases the transmission from the neutral position and controls the first solenoid valve and / or the second solenoid valve to open to heat the transmission until the transmission oil temperature is not lower than the second set value.

[0019] S5. The controller controls the first and second solenoid valves to close, stopping the heating of the transmission.

[0020] Furthermore, the first set value is -20℃. In step S3, when the oil temperature of the transmission is below -30℃, both the first and second solenoid valves are opened. The cooling water preheating pipe heats the transmission at a temperature not lower than the first preheating temperature, and the exhaust gas preheating pipe heats the transmission at a temperature not higher than the second preheating temperature.

[0021] Furthermore, in step S3, when the oil temperature of the transmission is higher than -30°C and lower than -20°C, both the first and second solenoid valves are opened. The cooling water preheating pipe heats the transmission at a temperature not lower than the third preheating temperature, and the exhaust gas preheating pipe heats the transmission at a temperature not higher than the fourth preheating temperature. The third preheating temperature is higher than the first preheating temperature, and the fourth preheating temperature is higher than the second preheating temperature.

[0022] Furthermore, in step S4, the second set value is 60°C.

[0023] Vehicle, the vehicle comprising:

[0024] One or more processors;

[0025] Storage device for storing one or more programs;

[0026] When the one or more programs are executed by the one or more processors, the one or more processors implement the transmission preheating method as described above.

[0027] A storage medium on which a computer program is stored, which, when executed by a processor, implements the transmission preheating method as described above.

[0028] The beneficial effects of this invention are:

[0029] The present invention provides a transmission preheating system, comprising a controller electrically connected to a first solenoid valve and a second solenoid valve. The controller can control the opening of the first and second solenoid valves, thereby heating the transmission through the exhaust gas preheating pipeline and the cooling water preheating pipeline, thus raising the temperature of the transmission. This heats the electrical components of the transmission in a low-temperature environment, ensuring their normal operation and guaranteeing the driving safety of the vehicle. Simultaneously, it can heat the transmission oil temperature, ensuring the fluidity of the lubricating oil, reducing churning losses, and improving the overall fuel economy of the vehicle.

[0030] The transmission preheating method provided by the present invention uses the transmission preheating system described above to heat the transmission, which can ensure the driving safety of the whole vehicle, reduce oil churning loss, and improve the economy of the whole vehicle. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention 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 the content of the embodiments of the present invention and these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a transmission preheating system according to Embodiment 1 of the present invention;

[0033] Figure 2 This is a flowchart of a transmission preheating method according to Embodiment 2 of the present invention;

[0034] Figure 3 This is a schematic diagram of the vehicle in Embodiment 3 of the present invention. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings, not all of them.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Example 1

[0039] When a car is left to stand for a period of time under low-temperature conditions, the gear oil, electrical components, assemblies, and parts will all drop to a temperature comparable to the surrounding environment. Furthermore, some electromechanical components will undergo changes in characteristics under low-temperature conditions, which not only affects the overall vehicle function and performance but also the reliability of the electromechanical components themselves.

[0040] To ensure overall vehicle driving safety while reducing churning losses and improving overall vehicle fuel economy, such as Figure 1As shown, the present invention provides a transmission preheating system. The transmission preheating system includes a controller 11, an exhaust gas preheating pipeline 15, and a cooling water preheating pipeline 18.

[0041] The exhaust gas preheating pipe 15 is connected to the engine exhaust. A first solenoid valve 14 is installed on the exhaust gas preheating pipe 15. The first solenoid valve 14 is electrically connected to the controller 11. The controller 11 can control the first solenoid valve 14 to open to heat the transmission 10. The cooling water preheating pipe 18 is used for heat exchange of the engine. A second solenoid valve 17 is installed on the exhaust gas preheating pipe 15. The second solenoid valve 17 is electrically connected to the transmission controller 11. The controller 11 can control the second solenoid valve 17 to open to heat the transmission 10.

[0042] The temperature of the vehicle's exhaust gas and the cooling water heated by the engine are used to heat the transmission 10, thereby raising the temperature of the transmission 10. This heats the electrical components of the transmission 10 in a low-temperature environment, ensuring that the electrical components can work normally and ensuring the driving safety of the entire vehicle. At the same time, it can also heat the oil temperature of the transmission 10, ensuring the fluidity of the lubricating oil, reducing oil churning losses, and improving the fuel economy of the entire vehicle.

[0043] Furthermore, a first temperature sensor 13 is provided on the transmission 10, and the first temperature sensor 13 is electrically connected to the controller 11. By setting the first temperature sensor 13, the temperature of the transmission 10 can be collected in real time, and the collected temperature is transmitted to the controller 11. The controller 11 controls the heating rate of the transmission 10 by controlling the opening and closing of the first switching solenoid valve 14 and the second switching solenoid valve 17, thereby controlling the heating of the transmission 10 according to actual needs. Specifically, in this embodiment, the controller 11 is a transmission 10 controller 11 (TCU).

[0044] Furthermore, a second temperature sensor 16 is installed on the exhaust gas preheating pipe 15, and the second temperature sensor 16 is electrically connected to the controller 11. The second temperature sensor 16 can collect the temperature of the exhaust gas in the exhaust gas preheating pipe 15, so that the controller 11 can control the opening and closing of the first switching solenoid valve 14 according to actual needs, so that the heating temperature of the transmission 10 is not too high, which would damage the electronic components.

[0045] Furthermore, a third temperature sensor 19 is installed on the cooling water preheating pipe 18, and the third temperature sensor 19 is electrically connected to the controller 11. The third temperature sensor 19 can collect the temperature of the cooling water in the cooling water preheating pipe 18, so that the controller 11 can control the opening and closing of the second switching solenoid valve 17 according to actual needs, and can effectively heat the transmission 10.

[0046] The transmission preheating system provided in this embodiment can preheat the transmission 10 under low temperature conditions, shorten the preheating time from power-on to start driving, and continue to preheat the transmission 10 after driving until the gear oil temperature rises to the normal operating temperature, thereby improving vehicle travel efficiency, reducing oil churning losses caused by low temperature, improving overall vehicle transmission efficiency, and reducing fuel consumption.

[0047] Example 2

[0048] like Figure 2 As shown, this embodiment provides a transmission preheating method, which uses the above-described transmission preheating system to heat the transmission 10, including the following steps:

[0049] S1. The vehicle is powered on and the engine is ignited;

[0050] S2. The controller 11 collects the oil temperature of the transmission 10. If the oil temperature of the transmission 10 is lower than the first set value, then proceed to step S3; otherwise, proceed to step S4.

[0051] S3. Enter the parking heating mode. The controller 11 controls the transmission 10 to remain in neutral. The controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the first set value and / or the set heating time is reached, and then proceed to the next step.

[0052] S4. When entering driving mode, the controller 11 releases the state of the transmission 10 being in neutral, and the controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the second set value.

[0053] S5, the controller 11 controls the first switch solenoid valve 14 and the second switch solenoid valve 17 to close, stopping the heating of the transmission 10.

[0054] After the vehicle is started, the controller 11 controls the temperature of the transmission 10. When the temperature is lower than the first set value, parking heating is activated. This allows the transmission 10 to be preheated under low-temperature conditions, shortening the preheating time from power-on to start driving. After driving, the transmission 10 can continue to be preheated until the gear oil temperature rises to the normal operating temperature, thereby improving the vehicle's travel efficiency, reducing oil churning losses caused by low temperatures, improving the overall vehicle transmission efficiency, and reducing fuel consumption.

[0055] Specifically, in this embodiment, when the temperature of the transmission 10 exceeds a first set value within a set time period, or when the set time period has elapsed but the temperature of the transmission 10 still does not exceed the first set value, the vehicle will enter the driving condition, thus satisfying the driver's needs while taking into account the performance of the transmission 10. Specifically, the timing is performed by a timer 12 electrically connected to the controller 11.

[0056] Further, the first set value is -20℃. In step S3, when the oil temperature of the transmission 10 is below -30℃, both the first solenoid valve 14 and the second solenoid valve 17 are opened. The cooling water preheating pipe 18 heats the transmission 10 at a temperature not lower than the first preheating temperature, and the exhaust gas preheating pipe 15 heats the transmission 10 at a temperature not higher than the second preheating temperature. Specifically, -30℃ is one of the commonly used judgment boundaries for low-temperature operating conditions of the vehicle. According to the requirements for low-temperature operating conditions of the vehicle, when the oil temperature of the transmission 10 is below -30℃, driving is not allowed, triggering the vehicle's functional limitation, and the transmission 10 remains in neutral. The first preheating temperature is 100℃, and the second preheating temperature is 30℃. 100℃ is the engine exhaust gas limit temperature determined based on the transmission 10 oil temperature being below -30℃, to avoid irreversible changes in non-metallic and electrical components due to excessively high temperatures during the preheating process; 30℃ is the engine coolant limit temperature determined based on the transmission 10 oil temperature being below -30℃, to avoid insufficient heat exchange efficiency of the coolant preheating pipe 18 due to insufficient coolant temperature.

[0057] In this embodiment, the first solenoid valve 14 is a pneumatic proportional valve with an initial trigger state of 100% duty cycle control. The flow rate of the exhaust gas is controlled by controlling the duty cycle of the first solenoid valve 14, thereby controlling the temperature inside the exhaust gas preheating pipeline 15. Specifically, when the temperature of the exhaust gas preheating pipeline 15 is higher than 100°C, the exhaust gas flow rate is controlled by decreasing the opening by 10%. The 10% duty cycle is used as the decreasing step size, determined based on the characteristics of the solenoid valve and the system control accuracy requirements. In other embodiments, the decreasing step size of the opening of the first solenoid valve 14 can also be set according to actual needs; no further restrictions are imposed here.

[0058] Further, in step S3, when the oil temperature of the transmission 10 is above -30℃ and below -20℃, both the first solenoid valve 14 and the second solenoid valve 17 are opened. The cooling water preheating pipe 18 heats the transmission 10 at a temperature not lower than the third preheating temperature, and the exhaust gas preheating pipe 15 heats the transmission 10 at a temperature not higher than the fourth preheating temperature. The third preheating temperature is higher than the first preheating temperature, and the fourth preheating temperature is higher than the second preheating temperature. Specifically, -20℃ is one of the commonly used judgment boundaries for low-temperature operating conditions of the vehicle. According to the requirements for low-temperature operating conditions of the vehicle, when the oil temperature of the transmission 10 is below -20℃, driving is not allowed, triggering the vehicle's functional limitation, and the transmission 10 remains in neutral. The third preheating temperature is 110℃, and the fourth preheating temperature is 40℃. 110℃ is the engine exhaust gas limit temperature determined based on the transmission 10 oil temperature being below -20℃, to avoid irreversible changes in non-metallic and electrical components due to excessively high temperatures during preheating; 40℃ is the engine coolant limit temperature determined based on the transmission 10 oil temperature being below -20℃, to avoid insufficient heat exchange efficiency of the coolant preheating pipe 18 due to insufficient coolant temperature.

[0059] Similarly, the first solenoid valve 14 is initially triggered with a 100% duty cycle control. Duty cycle control of the first solenoid valve 14 controls the flow rate of the exhaust gas, thereby controlling the temperature inside the exhaust gas preheating pipeline 15. Specifically, when the temperature of the exhaust gas preheating pipeline 15 exceeds 110°C, the exhaust gas flow rate is controlled by decreasing the opening by 10%. The 10% duty cycle is used as the decreasing step size, determined based on the solenoid valve characteristics and system control accuracy requirements. In other embodiments, the decreasing step size of the first solenoid valve 14 can also be set according to actual needs; no further restrictions are imposed here.

[0060] Furthermore, a heating time of 20 minutes is set as the upper limit of the acceptable time for preheating the transmission 10 under low-temperature operating conditions. Starting from the start of heating the transmission 10, when the oil temperature of the transmission 10 is higher than -20℃, the vehicle's driving function restrictions are lifted, and the vehicle can shift gears and drive; when the oil temperature of the transmission 10 is lower than -20℃ but the preheating time exceeds 20 minutes, the vehicle's driving function restrictions are lifted, and the vehicle can shift gears and drive, thus meeting the driver's driving needs.

[0061] Further, in step S4, the exhaust gas preheating pipe 15 heats the transmission 10 at a temperature not exceeding 120°C, and the cooling water preheating pipe 18 heats the transmission 10 at a temperature not lower than 50°C. Here, 120°C is the engine exhaust gas limit temperature determined based on the transmission 10's oil temperature being above -20°C, to avoid irreversible changes in non-metallic and electrical components due to excessively high temperatures during preheating; 50°C is the engine cooling water limit temperature determined based on the transmission 10's oil temperature being above -20°C, to avoid insufficient cooling water temperature leading to low cooling water loop heat exchange efficiency.

[0062] Furthermore, in step S4, the second set value is 60℃. 60℃ is a judgment temperature condition determined based on the variation law of gear oil churning loss in the transmission 10 and the gear oil temperature under normal operating conditions of the transmission 10.

[0063] Since the engine coolant needs to exchange heat with the engine to raise its own temperature, which has a time lag, the preheating process mainly uses engine exhaust preheating and is supplemented by engine coolant preheating, which can effectively and quickly raise the temperature of the transmission 10.

[0064] By refining the ultra-low temperature operating conditions below -20℃ into below -30℃ and -30℃ to -20℃ based on real-vehicle application scenarios, precise control of transmission preheating 10 under ultra-low temperature conditions can be achieved. The exhaust gas preheating pipe 15 is set to temperatures of 100℃ and 110℃ for the two ultra-low temperature operating conditions below -30℃ and -30℃ to -20℃ respectively, to achieve precise control of transmission preheating 10 under ultra-low temperature conditions. Similarly, the cooling water preheating pipe 18 is set to temperatures of 30℃ and 40℃ for the two ultra-low temperature operating conditions below -30℃ and -30℃ to -20℃ respectively, to achieve precise control of transmission preheating 10 under ultra-low temperature conditions.

[0065] Example 3

[0066] Figure 3 This is a schematic diagram of the vehicle structure in this embodiment. Figure 3 A block diagram of an exemplary vehicle 312 used to implement embodiments of the present invention is shown. Figure 3 The vehicle 312 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0067] like Figure 3 As shown, vehicle 312 is represented in the form of a general-purpose terminal. The components of vehicle 312 may include, but are not limited to: vehicle body (not shown in the figure), one or more processors 316, storage device 328, and bus 318 connecting different system components (including storage device 328 and processor 316).

[0068] Bus 318 represents one or more of several bus architectures, including a memory device bus or memory device controller 11, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Subversive Alliance (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0069] Vehicle 312 includes a variety of computer system readable media. These media can be any available media that can be accessed by vehicle 312, including volatile and non-volatile media, removable and non-removable media.

[0070] Storage device 328 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 330 and / or cache memory 332. Vehicle 312 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 334 may be used to read and write non-removable, non-volatile magnetic media (… Figure 3 Not shown; usually referred to as a "hard drive"). Although Figure 3 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disc drive for reading and writing to a removable non-volatile optical disc, such as a Compact Disc Read-Only Memory (CD-ROM), a Digital Video Disc Read-Only Memory (DVD-ROM), or other optical media. In these cases, each drive may be connected to bus 318 via one or more data media interfaces. Storage device 328 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0071] A program / utility 340 having a set (at least one) of program modules 342 may be stored in, for example, a storage device 328. Such program modules 342 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 342 typically perform the functions and / or methods described in the embodiments of the present invention.

[0072] Vehicle 312 can also communicate with one or more external devices 314 (e.g., keyboard, pointing terminal, display 324, etc.), and with one or more terminals that enable users to interact with vehicle 312, and / or with any terminal that enables vehicle 312 to communicate with one or more other computing terminals (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 322. Furthermore, vehicle 312 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 320. Figure 3 As shown, network adapter 320 communicates with other modules of vehicle 312 via bus 318. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with vehicle 312, including but not limited to: microcode, terminal drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) systems, tape drives, and data backup storage systems.

[0073] The processor 316 executes various functional applications and data processing by running programs stored in the storage device 328, such as implementing a transmission preheating method provided in Embodiment 2 of the present invention. This transmission preheating method includes the following steps:

[0074] S1. The vehicle is powered on and the engine is ignited;

[0075] S2. The controller 11 collects the oil temperature of the transmission 10. If the oil temperature of the transmission 10 is lower than the first set value, then proceed to step S3; otherwise, proceed to step S4.

[0076] S3. Enter the parking heating mode. The controller 11 controls the transmission 10 to remain in neutral. The controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the first set value and / or the set heating time is reached, and then proceed to the next step.

[0077] S4. When entering driving mode, the controller 11 releases the state of the transmission 10 being in neutral, and the controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the second set value.

[0078] S5, the controller 11 controls the first switch solenoid valve 14 and the second switch solenoid valve 17 to close, stopping the heating of the transmission 10.

[0079] Example 4

[0080] This embodiment provides a storage medium, specifically a computer-readable storage medium, on which a computer program is stored. When executed by a processor, this program implements a transmission preheating method as provided in Embodiment 2 of the present invention. This transmission preheating method includes the following steps:

[0081] S1. The vehicle is powered on and the engine is ignited;

[0082] S2. The controller 11 collects the oil temperature of the transmission 10. If the oil temperature of the transmission 10 is lower than the first set value, then proceed to step S3; otherwise, proceed to step S4.

[0083] S3. Enter the parking heating mode. The controller 11 controls the transmission 10 to remain in neutral. The controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the first set value and / or the set heating time is reached, and then proceed to the next step.

[0084] S4. When entering driving mode, the controller 11 releases the state of the transmission 10 being in neutral, and the controller 11 controls the first switch solenoid valve 14 and / or the second switch solenoid valve 17 to open and heat the transmission 10 until the oil temperature of the transmission 10 is not lower than the second set value.

[0085] S5, the controller 11 controls the first switch solenoid valve 14 and the second switch solenoid valve 17 to close, stopping the heating of the transmission 10.

[0086] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0087] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0088] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0089] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or terminal. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0090] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for preheating a transmission, characterized in that, A transmission preheating system is used to heat the transmission, the transmission preheating system comprising: Controller; An exhaust gas preheating pipeline is connected to the engine exhaust. A first solenoid valve is installed on the exhaust gas preheating pipeline. The first solenoid valve is electrically connected to the controller. The controller can control the first solenoid valve to open in order to heat the transmission. A cooling water preheating pipeline is used for heat exchange with the engine. A second solenoid valve is installed on the cooling water preheating pipeline. The second solenoid valve is electrically connected to the controller. The controller can control the second solenoid valve to open to heat the transmission. The transmission preheating method includes the following steps: S1. The vehicle is powered on and the engine is ignited; S2. The controller collects the transmission oil temperature. If the transmission oil temperature is lower than the first set value, proceed to step S3; otherwise, proceed to step S4. S3. Enter the parking heating mode. The controller controls the transmission to remain in neutral. The controller controls the first switch solenoid valve and / or the second switch solenoid valve to open and heat the transmission until the transmission oil temperature is not lower than the first set value and / or the set heating time is reached, and then proceed to the next step. S4. When entering driving mode, the controller releases the transmission from the neutral position and controls the first solenoid valve and / or the second solenoid valve to open to heat the transmission until the transmission oil temperature is not lower than the second set value. S5. The controller controls the first and second solenoid valves to close, stopping the heating of the transmission.

2. The transmission preheating method according to claim 1, characterized in that, The transmission is equipped with a first temperature sensor, which is electrically connected to the controller.

3. The transmission preheating method according to claim 1, characterized in that, A second temperature sensor is installed on the exhaust gas preheating pipeline, and the second temperature sensor is electrically connected to the controller.

4. The transmission preheating method according to claim 1, characterized in that, A third temperature sensor is installed on the cooling water preheating pipeline, and the third temperature sensor is electrically connected to the controller.

5. The transmission preheating method according to any one of claims 1-4, characterized in that, The first set value is -20℃. In step S3, when the oil temperature of the transmission is below -30℃, both the first and second solenoid valves are opened. The cooling water preheating pipe heats the transmission at a temperature not lower than the first preheating temperature, and the exhaust gas preheating pipe heats the transmission at a temperature not higher than the second preheating temperature.

6. The transmission preheating method according to claim 5, characterized in that, In step S3, when the oil temperature of the transmission is higher than -30°C and lower than -20°C, both the first and second solenoid valves are opened. The cooling water preheating pipe heats the transmission at a temperature not lower than the third preheating temperature, and the exhaust gas preheating pipe heats the transmission at a temperature not higher than the fourth preheating temperature. The third preheating temperature is higher than the first preheating temperature, and the fourth preheating temperature is higher than the second preheating temperature.

7. The transmission preheating method according to any one of claims 1-4, characterized in that, In step S4, the second set value is 60°C.

8. A vehicle, characterized in that, The vehicles include: One or more processors; Storage device 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 transmission preheating method as described in any one of claims 1-7.

9. A storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the transmission preheating method as described in any one of claims 1-7.

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