Engine starting method, device and equipment
By setting sensors in the engine to obtain the cold engine status, and adjusting the VVT combination parameters and ignition angle method according to preset rules, the problem of increased fuel consumption during cold start of the engine is solved, and the effect of reducing fuel consumption and emissions is achieved.
Patent Information
- Application Number
- CN202411875280.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-04-04
AI Technical Summary
In the prior art, when the engine starts cold, the coolant temperature and the oil temperature deviate from the national standard conditions, resulting in poor fuel consumption rate and cannot operate in the optimal VVT combination.
By setting the sensor to obtain the engine's cold state, based on the preset engine start rules, the engine start method that matches the cold state is determined, including adjusting the VVT combination parameters and ignition angle method.
By selecting the best VVT combination parameters and ignition angle method, reduce automobile fuel consumption, reduce emissions, and improve engine combustion characteristics.
Smart Images
Figure CN119754948A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle fuel consumption control, and in particular to an engine starting method, device and equipment. Background Art
[0002] At present, when automobile engines select the variable valve timing (VVT) and VVT combination with the best fuel consumption, that is, when selecting the engine speed and torque with the best fuel consumption, they are all selected based on the engine universal characteristic data under the national standard conditions. However, the national standard requires the operating coolant temperature to be 88±5℃ and the engine oil temperature to be 95-115℃. In fact, when the vehicle is cold started, the engine coolant temperature and engine oil temperature will deviate from the national standard conditions and will last for quite a while.
[0003] Coolant temperature conditions have a significant impact on engine fuel consumption. Under national standard conditions, the VVT combination and ignition angle correction for optimal fuel consumption can be achieved, but the operating point under other temperature conditions will deviate, resulting in the engine failing to operate according to the optimal VVT combination during the cold stage, and the fuel consumption rate performance is not optimal. Summary of the invention
[0004] The embodiments of the present invention provide an engine starting method, device and equipment, which are used to solve the problem of increased fuel consumption during cold start of the engine in the prior art.
[0005] In a first aspect, an embodiment of the present invention provides an engine starting method, the method comprising: Acquiring a cold engine state of the engine through a set sensor, wherein the cold engine state includes an engine coolant temperature; Based on a preset engine starting rule, determining an engine starting mode matching the cold engine state according to the cold engine state; The engine start is performed according to the engine start mode.
[0006] Optionally, the engine starting method includes: variable valve timing VVT combination parameters; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; determining an optimal VVT combination parameter matching the target threshold range in the engine starting rule; The VVT combination parameters include a preset correspondence between engine speed and torque.
[0007] Optionally, the engine starting method includes: an ignition angle method; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; An optimal ignition angle correction method matching the target threshold range is determined in the engine starting rule.
[0008] Optionally, before obtaining the cold engine state of the engine through the provided sensor, the method further includes: The engine starting rule is established according to the coolant temperature and universal characteristic data.
[0009] Optionally, establishing the engine start rule according to the coolant temperature and the universal characteristic data includes: Performing bench calibration on the engine to determine universal characteristic data of the engine under national standards; Based on the universal characteristic data, the VVT combination of the engine is adjusted in a plurality of threshold ranges pre-divided for the cold engine state, and the optimal VVT combination corresponding to each threshold range is determined; According to the determined optimal VVT combination, the ignition angle is adjusted to determine the optimal ignition angle correction method corresponding to each of the threshold ranges; The engine starting rule is established according to the optimal VVT combination and the optimal ignition angle correction method under each of the threshold ranges.
[0010] In a second aspect, an embodiment of the present invention provides an engine starting device, the device comprising: An acquisition module, which acquires a cold engine state of the engine through a set sensor, wherein the cold engine state includes an engine coolant temperature; A determination module, based on a preset engine start rule, determines an engine start mode matching the cold engine state according to the cold engine state; The starting module starts the engine according to the engine starting method.
[0011] Optionally, the engine starting method includes: variable valve timing VVT combination parameters; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; determining an optimal VVT combination parameter matching the target threshold range in the engine starting rule; The VVT combination parameters include a preset correspondence between engine speed and torque.
[0012] Optionally, the engine starting method includes: an ignition angle method; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; An optimal ignition angle correction method matching the target threshold range is determined in the engine starting rule.
[0013] In a third aspect, an embodiment of the present invention provides an electronic device, including: at least one processor; and at least one memory in communication with the processor, wherein: The memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method as described in any one of the first aspects.
[0014] In a fourth aspect, an embodiment of the present invention provides a storage medium, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute any method described in the first aspect.
[0015] In the embodiment of the present invention, based on the existing engine control principle, the space for low fuel consumption is further explored according to different coolant temperatures and oil temperatures. By increasing the corresponding engine starting modes under different cold engine states, the automobile fuel consumption is reduced by selecting the optimal VVT combination parameters and ignition angle mode, while reducing emissions and improving engine combustion characteristics. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 Shown is a structural schematic diagram of an engine starting system provided by an embodiment of the present application; Figure 2 Shown is a flow chart of an engine starting method provided by an embodiment of the present application; Figure 3 Shown is a schematic structural diagram of an engine starting device provided in an embodiment of the present application; Figure 4 Shown is a schematic structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0018] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0019] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0020] At present, when selecting the VVT combination with the best fuel consumption, that is, the engine speed and torque with the best fuel consumption, the automobile engine is selected based on the engine universal characteristic data under the national standard conditions. However, the national standard requires the operating coolant temperature to be 88±5℃ and the engine oil temperature to be 95-115℃. In fact, when the vehicle is cold started, the engine coolant temperature and engine oil temperature will deviate from the national standard conditions and will last for quite a while.
[0021] Coolant temperature conditions have a significant impact on engine fuel consumption. Under national standard conditions, the VVT combination and ignition angle correction for optimal fuel consumption can be achieved, but the operating point under other temperature conditions will deviate, resulting in the engine failing to operate according to the optimal VVT combination during the cold stage, and the fuel consumption rate performance is not optimal.
[0022] Therefore, when actually starting the vehicle engine, if the car engine is in a cold state, there will be problems such as poor engine VVT combination control stability and inability to correct the VVT combination and ignition angle according to different coolant temperatures, resulting in increased fuel consumption.
[0023] like Figure 1 FIG. 1 is a schematic diagram of the structure of an engine starting system provided by an embodiment of the present invention. Figure 1 The engine starting system includes a control device 110, a sensor 120 and an engine 130.
[0024] The sensor 120 is deployed at the engine 130 and is used to collect the cold engine state in real time. The cold engine state of the engine is the coolant temperature of the engine. Generally, the sensor is a temperature sensor, which is used to collect the engine coolant temperature and feed the collection result back to the control device.
[0025] The control device 110 is used to receive the engine coolant temperature fed back by the sensor to determine the cold engine state in real time. The control device determines the engine start mode that matches the current cold engine state according to the preset and stored engine start rules, and controls the engine start according to the determined engine start mode.
[0026] The determined engine starting method includes VVT combination parameters, that is, the best combination of the corresponding relationship between the vehicle engine speed and torque, and the best ignition angle.
[0027] In some embodiments, the control device 110 may be a power unit control system PCU.
[0028] like Figure 2 As shown in FIG. 1 , a flow chart of an engine starting method provided by an embodiment of the present invention is shown. The method can be applied to Figure 1 The control device 110 shown in FIG. Figure 2 The specific steps of the method include: S201, obtaining the cold engine state of the engine through a set sensor.
[0029] Specifically, the cold state of the engine includes the temperature of the engine coolant. The real-time temperature of the engine coolant in the current environment is obtained by a temperature sensor deployed in the engine, thereby determining the cold state of the engine.
[0030] S202, based on a preset engine starting rule, determine an engine starting method that matches the cold engine state according to the cold engine state.
[0031] Specifically, the engine starting mode includes VVT combination parameters, that is, a set of corresponding relationships between the engine speed and torque. The engine starting mode also includes an ignition angle mode.
[0032] According to the cold engine state obtained in S201, the target threshold range of the cold engine state is determined, and the optimal VVT combination parameters matching the target threshold range and the optimal ignition angle correction method are determined from the preset engine starting rules.
[0033] Among them, in the engine starting rules, multiple threshold ranges are pre-divided to describe the temperature range. Under each threshold range, there is a preset optimal VVT combination parameter matching the temperature range and an ignition angle method under the temperature range.
[0034] S203, executing engine starting according to the engine starting method.
[0035] The engine start is controlled according to the optimal VVT combination parameters and the optimal ignition angle correction method under the current cold start condition.
[0036] In a specific embodiment, four threshold ranges are pre-divided for the engine coolant, namely ≥60°C, 60°C-40°C, 40°C-30°C, and 30°C-20°C, and correspond to the respective VVT combination 1, ignition angle correction mode 1, VVT combination 2, ignition angle correction mode 2, VVT combination 3, ignition angle correction mode 3, and VVT combination 4, ignition angle correction mode 4. When it is determined that the engine coolant temperature is 50°C, the engine start is controlled according to the engine speed and torque in the corresponding VVT combination 2 and the ignition angle correction mode 2.
[0037] In the embodiment of the present invention, based on the existing engine control principle, the space for low fuel consumption is further explored according to different coolant temperatures and oil temperatures. By increasing the corresponding engine starting modes under different cold engine states, the automobile fuel consumption is reduced by selecting the optimal VVT combination parameters and ignition angle mode, while reducing emissions and improving engine combustion characteristics.
[0038] Optionally, in some embodiments, before executing S201, it is necessary to complete the establishment of engine start rules in advance and store the engine start rules in the control device.
[0039] Among them, engine starting rules can be established based on coolant temperature and universal characteristic data.
[0040] Specifically, the engine is subjected to bench calibration, and after the bench calibration is completed, the universal characteristic data of the engine under the national standard can be determined. Based on the determined universal characteristic data under the national standard, the VVT combination of the engine is adjusted under multiple threshold ranges pre-divided for the cold engine state. The VVT combination is fine-tuned under the condition of stable engine speed and load to determine the optimal VVT combination with the lowest fuel consumption corresponding to each threshold range.
[0041] Based on the VVT combination determined by each threshold range, the ignition angle is adjusted to find the optimal fuel consumption point while taking into account combustion and emissions. The ignition angle correction method at this time is determined as the optimal ignition angle correction method corresponding to the threshold range.
[0042] After respectively determining the optimal VVT combination corresponding to each threshold range and the optimal ignition angle correction method, an engine starting rule is established according to the correspondence between each threshold range and the optimal VVT combination and the optimal ignition angle correction method, and is stored in the control device.
[0043] In some embodiments, when the VVT combination is adjusted, or when the ignition angle is adjusted based on the VVT combination, it can be achieved through ECU control software. The ECU software makes relevant corrections based on existing data. This method is easy to implement and verify, and can achieve the purpose of reducing engine fuel consumption without additional manufacturing costs.
[0044] Corresponding to the above engine starting method, the present application embodiment also provides an engine starting device. Figure 3 , is a structural diagram of an engine starting device provided in an embodiment of the present application. The engine starting device may include: an acquisition module 301, a determination module 302, and a starting module 303.
[0045] The acquisition module 301 acquires the cold engine state of the engine through a set sensor, and the cold engine state includes the engine coolant temperature.
[0046] The determination module 302 determines an engine starting mode that matches the cold engine state based on a preset engine starting rule and according to the cold engine state.
[0047] The starting module 303 starts the engine according to the engine starting method.
[0048] Figure 4 FIG. 1 is a schematic diagram of the structure of an electronic device according to an embodiment of the present specification. Figure 4 As shown, the electronic device may include at least one processor; and at least one memory communicatively connected to the processing unit, wherein: the memory stores program instructions that can be executed by the processing unit, and the processor calls the program instructions to execute the engine starting method provided in this embodiment.
[0049] The electronic device can be a device capable of intelligently communicating with a user, such as a cloud server, and the specific form of the electronic device is not limited in the embodiments of this specification. It can be understood that the electronic device here is the machine mentioned in the method embodiment.
[0050] Figure 4 A block diagram of an exemplary electronic device suitable for implementing the embodiments of the present description is shown. Figure 4 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of this specification.
[0051] like Figure 4As shown, the electronic device is in the form of a general computing device. The components of the electronic device may include but are not limited to: one or more processors 410, a communication interface 420, a memory 430, and a communication bus 440 connecting different system components (including the memory 430, the communication interface 420 and the processor 410).
[0052] The communication bus 440 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnection (PCI) bus.
[0053] Electronic devices typically include a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device, including volatile and non-volatile media, removable and non-removable media.
[0054] The memory 430 may include a computer system readable medium in the form of a volatile memory, such as a random access memory (RAM) and / or a cache memory. The electronic device may further include other removable / non-removable, volatile / non-volatile computer system storage media. The memory 430 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of each embodiment of the present specification.
[0055] A program / utility having a set (at least one) of program modules may be stored in memory 430, such program modules including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules generally perform the functions and / or methods of the embodiments described in this specification.
[0056] The processor 410 executes various functional applications and data processing by running the programs stored in the memory 430, such as implementing the engine starting method provided in the embodiment shown in this specification.
[0057] An embodiment of the present specification provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, wherein the computer instructions enable the computer to execute the engine starting method provided by the embodiment shown in the present specification.
[0058] The above-mentioned non-transitory computer-readable storage medium can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ReadOnly Memory; hereinafter referred to as: ROM), an erasable programmable read-only memory (Erasable Programmable ReadOnly Memory; hereinafter referred to as: EPROM) or flash memory, optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.
[0059] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
[0060] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
[0061] Computer program code for performing the operations of this specification may be written in one or more programming languages or a combination thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet).
[0062] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this specification, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0064] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of this specification includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of this specification belong.
[0065] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.
[0066] It should be noted that the terminals involved in the embodiments of this specification may include but are not limited to personal computers (Personal Computer; hereinafter referred to as: PC), personal digital assistants (Personal Digital Assistant; hereinafter referred to as: PDA), wireless handheld devices, tablet computers (Tablet Computer), mobile phones, MP3 players, MP4 players, etc.
[0067] In the embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
[0068] In addition, each functional unit in each embodiment of this specification may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.
[0069] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the method described in each embodiment of this specification.
[0070] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.
Claims
1. An engine starting method, characterized in that: The method comprises: Acquiring a cold engine state of the engine through a set sensor, wherein the cold engine state includes an engine coolant temperature; Based on a preset engine starting rule, determining an engine starting mode matching the cold engine state according to the cold engine state; The engine start is performed according to the engine start mode.
2. The method according to claim 1, characterized in that The engine starting method includes: variable valve timing VVT combination parameters; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; determining an optimal VVT combination parameter matching the target threshold range in the engine starting rule; The VVT combination parameters include a preset correspondence between engine speed and torque.
3. The method according to claim 1, characterized in that The engine starting methods include: ignition angle method; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; An optimal ignition angle correction method matching the target threshold range is determined in the engine starting rule.
4. The method according to claim 1, characterized in that Before obtaining the cold state of the engine through the provided sensor, the method further includes: The engine starting rule is established according to the coolant temperature and universal characteristic data.
5. The method according to claim 4, characterized in that The engine start rule is established according to the coolant temperature and the universal characteristic data, including: Performing bench calibration on the engine to determine universal characteristic data of the engine under national standards; Based on the universal characteristic data, the VVT combination of the engine is adjusted in a plurality of threshold ranges pre-divided for the cold engine state, and the optimal VVT combination corresponding to each threshold range is determined; According to the determined optimal VVT combination, the ignition angle is adjusted to determine the optimal ignition angle correction method corresponding to each of the threshold ranges; The engine starting rule is established according to the optimal VVT combination and the optimal ignition angle correction method under each of the threshold ranges.
6. An engine starting device, characterized in that: The device comprises: An acquisition module, which acquires a cold engine state of the engine through a set sensor, wherein the cold engine state includes an engine coolant temperature; A determination module, based on a preset engine start rule, determines an engine start mode matching the cold engine state according to the cold engine state; The starting module starts the engine according to the engine starting method.
7. The device according to claim 6, characterized in that The engine starting method includes: variable valve timing VVT combination parameters; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; determining an optimal VVT combination parameter matching the target threshold range in the engine starting rule; The VVT combination parameters include a preset correspondence between engine speed and torque.
8. The device according to claim 6, characterized in that The engine starting methods include: ignition angle method; The determining, according to the cold engine state, an engine starting mode matching the cold engine state comprises: Determining a target threshold range for the cooling machine state; An optimal ignition angle correction method matching the target threshold range is determined in the engine starting rule.
9. An electronic device, characterized in that: include: at least one processor; as well as at least one memory in communication with the processor, wherein: The memory stores program instructions executable by the processor, and the processor can execute the method according to any one of claims 1 to 5 by calling the program instructions.
10. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 5.