Engine phase synchronization method and device, electronic equipment and storage medium
By acquiring the timing signals of the flywheel and camshaft and determining the positional relationship using the included angle, the engine achieves rapid phase synchronization, solving the problem of slow start-up response in traditional engines and improving engine start-up efficiency.
Patent Information
- Application Number
- CN202511466463.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-12-30
AI Technical Summary
When a traditional engine starts, the phase synchronization between the crankshaft and camshaft has problems such as long synchronization time and slow start-up response.
The first timing signal of the flywheel is obtained by the speed sensor, and the second timing signal of the camshaft is obtained by the phase sensor. The position of the large tooth and the signal slot is determined by the included angle relationship, and the engine is controlled to perform phase synchronization.
It reduces synchronization time and improves engine start-up efficiency and response speed.
Smart Images
Figure CN121229263A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of engine control technology, and in particular to an engine phase synchronization method, device, electronic equipment, and storage medium. Background Technology
[0002] As the core power source of automobiles and other vehicles, the engine's starting performance directly affects the user experience and reliability of the vehicle. During engine operation, the crankshaft converts the reciprocating motion of the piston into rotational motion, thereby driving the vehicle forward, while the camshaft controls the opening and closing timing of the engine valves to ensure that the air-fuel mixture in the cylinder is ignited at the correct time to generate power.
[0003] In practical applications, the engine starting process requires phase synchronization between the crankshaft and camshaft to ensure that valve opening and closing, fuel injection and other actions are precisely matched with piston movement, so as to start the engine smoothly.
[0004] When a traditional engine starts, due to the 2:1 transmission relationship between the crankshaft and camshaft speeds (i.e., the flywheel rotates 2 revolutions for the camshaft to rotate 1 revolution), and relying on sensors to identify and synchronize the phase signals of the crankshaft and camshaft, there are often problems such as long synchronization time and slow start-up response. Summary of the Invention
[0005] In view of this, it is necessary to provide an engine phase synchronization method, device, electronic equipment, and storage medium to achieve the purpose of improving engine start-up response.
[0006] To achieve the above objectives, in a first aspect, the present invention provides an engine phase synchronization method, comprising: The first timing signal of the flywheel is obtained by a speed sensor; the flywheel includes 1 large tooth and 57 small teeth; the angle between the large tooth and the speed sensor is the first angle. A second timing signal of the camshaft is acquired through a phase sensor; the camshaft gear includes 6 normal signal slots and 1 preset signal slot; the second included angle between the phase sensor and the target signal slot is determined based on the first included angle; the target signal slot is any one of the normal signal slots; the third included angle between the preset signal slot and the target signal slot is determined based on the first included angle and the second included angle. When the flywheel rotates one revolution, the positional relationship between the large gear and the signal slot on the camshaft is determined based on the first timing signal and the second timing signal; Based on the aforementioned positional relationship, the engine is controlled to perform phase synchronization.
[0007] In one possible implementation, determining the positional relationship between the large tooth and the signal slot on the camshaft based on the first timing signal and the second timing signal includes: When a pulse signal corresponding to the large tooth is read in the first timing signal and a pulse signal corresponding to the preset signal slot is read in the second timing signal, it is determined that the position of the large tooth falls within the first interval. The first interval is the interval between two adjacent normal signal slots of the preset signal slot.
[0008] In one possible implementation, determining the positional relationship between the large tooth and the signal slot on the camshaft based on the first timing signal and the second timing signal further includes: When a pulse signal corresponding to the large tooth is read in the first timing signal, and no pulse signal corresponding to the preset signal slot is read in the second timing signal, it is determined that the position of the large tooth falls in the second interval. The second interval is the interval that differs from the first interval by 360°.
[0009] In one possible implementation, the expression for the second included angle is as follows: C1 = F1 × (1 / 2) × [0.8, 1.2] Where C1 represents the second included angle and F1 represents the first included angle.
[0010] In one possible implementation, the expression for the third included angle is as follows: C0=(F1-C1)×(1 / 2)×[1,1.8] Where C0 represents the third included angle, F1 represents the first included angle, and C1 represents the second included angle.
[0011] In one possible implementation, the first included angle ranges from [100, 140].
[0012] In a second aspect, the present invention also provides an engine phase synchronization device, comprising: The first acquisition unit is used to acquire a first timing signal of the flywheel through a speed sensor; the flywheel includes 1 large tooth and 57 small teeth; the included angle between the large tooth and the speed sensor is the first included angle; The second acquisition unit is used to acquire a second timing signal of the camshaft through a phase sensor; the camshaft gear includes 6 normal signal slots and 1 preset signal slot; the second included angle between the phase sensor and the target signal slot is determined based on the first included angle; the target signal slot is any one of the normal signal slots; the third included angle between the preset signal slot and the target signal slot is determined based on the first included angle and the second included angle. The determining unit is used to determine the positional relationship between the large tooth and the signal groove on the camshaft based on the first timing signal and the second timing signal when the flywheel rotates 1 revolution. A synchronization unit is used to control the engine to perform phase synchronization based on the positional relationship.
[0013] Thirdly, the present invention also provides an electronic device, including a memory and a processor, wherein, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the engine phase synchronization method described in any of the above implementations.
[0014] Fourthly, the present invention also provides a computer-readable storage medium for storing a computer-readable program or instructions, which, when executed by a processor, can implement the steps of the engine phase synchronization method described in any of the above implementations.
[0015] Fifthly, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps in the engine phase synchronization method described in any of the above implementations.
[0016] The beneficial effects of the present invention are as follows: The engine phase synchronization method, device, electronic device and storage medium provided by the present invention obtain the first timing signal of the flywheel through the speed sensor and the second timing signal of the camshaft through the phase sensor. When the flywheel rotates 1 revolution, the positional relationship between the large tooth and the signal slot on the camshaft in the first timing signal is determined by whether the pulse signal of the preset signal slot can be read in the second timing signal. That is, between which two signal slots on the camshaft the large tooth falls. The ECU initiates phase synchronization. Synchronization is completed when the flywheel rotates 2 revolutions, which reduces the synchronization time, improves the engine starting efficiency and improves the engine starting response. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic flowchart of an embodiment of the engine phase synchronization method provided by the present invention; Figure 2 This is a schematic diagram showing the distribution of large and small teeth on the flywheel provided by the present invention. Figure 3This is a partial schematic diagram of the large and small teeth provided by the present invention; Figure 4 This is a partial schematic diagram of the speed sensor and the large tooth provided by the present invention; Figure 5 This is a schematic diagram showing the distribution of signal slots on the camshaft provided by the present invention; Figure 6 A partial schematic diagram of the phase sensor provided by the present invention; Figure 7 One of the schematic diagrams of timing signals provided by the present invention; Figure 8 This is a second schematic diagram of the timing signal provided by the present invention; Figure 9 The third schematic diagram of the timing signal provided by the present invention; Figure 10 A schematic diagram of an embodiment of the engine phase synchronization device provided by the present invention; Figure 11 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0020] In the description of the embodiments of the present invention, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.
[0021] The terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.
[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0023] This invention provides an engine phase synchronization method, device, electronic device, and storage medium, which are described below.
[0024] Figure 1 This is a schematic flowchart of an embodiment of the engine phase synchronization method provided by the present invention, as shown below. Figure 1 As shown, the engine phase synchronization method includes: S101. Obtain the first timing signal of the flywheel through the speed sensor; the flywheel includes 1 large tooth and 57 small teeth; the included angle between the large tooth and the speed sensor is the first included angle; S102. A second timing signal of the camshaft is acquired through a phase sensor; the camshaft gear includes 6 normal signal slots and 1 preset signal slot; the second included angle between the phase sensor and the target signal slot is determined based on the first included angle; the target signal slot is any one of the normal signal slots; the third included angle between the preset signal slot and the target signal slot is determined based on the first included angle and the second included angle. S103. When the flywheel rotates 1 revolution, the positional relationship between the large tooth and the signal groove on the camshaft is determined based on the first timing signal and the second timing signal. S104. Based on the aforementioned positional relationship, control the engine to perform phase synchronization.
[0025] The engine phase synchronization method provided by this invention can be executed by an engine controller (ECU).
[0026] In the S101, the flywheel speed and camshaft speed are in a 2:1 ratio, meaning the engine flywheel rotates twice for the camshaft to rotate once. Speed sensors and phase sensors are installed at the flywheel and camshaft to read the crankshaft phase signal and camshaft phase signal, respectively.
[0027] For example, Figure 2 The diagram shows the distribution of large and small teeth on the flywheel provided by this invention. Figure 2 As shown, signal teeth are distributed on the engine flywheel, which are divided into large and small teeth.
[0028] Figure 3 A partial schematic diagram of the large and small teeth provided by the present invention, as shown below. Figure 3 As shown, the spacing between the small teeth is 6 degrees, and the span of the large teeth is 18 degrees. There is only one large tooth on the outer side of the flywheel. Therefore, there are a total of 58 teeth: 57 small teeth and 1 large tooth.
[0029] Figure 4 This is a partial schematic diagram of the speed sensor and large gear provided by the present invention, as shown below. Figure 4As shown, the angle of the large tooth distance speed sensor is the first included angle F1.
[0030] In S102, the camshaft gear has signal slots, including 6 normal signal slots and 1 preset signal slot. Figure 5 This is a schematic diagram of the distribution of signal slots on the camshaft provided by the present invention, as shown below. Figure 5 As shown, the normal signal slots are evenly distributed at 60-degree angles, totaling 6 slots, labeled N1-N6. A small angle is added between each slot to create a +1 slot (i.e., the preset signal slot), for a total of 7 signal slots.
[0031] Figure 6 A partial schematic diagram of the phase sensor provided by the present invention is shown below. Figure 6 As shown, the angle between slot +1 and slot N1 is the third angle C0, and the angle between slot N1 and the phase sensor is the second angle C1.
[0032] The second included angle can be calculated from the first included angle, and the third included angle can be calculated from the first included angle and the second included angle. By setting the first included angle, the second included angle, and the third included angle, the large tooth of the flywheel is made to fall between the signal slots of the camshaft gear, and also between the two signal slots containing the +1 slot.
[0033] In S103, when the flywheel rotates 1 revolution, the camshaft gear rotates 0.5 revolutions. At this time, the +1 tooth of the camshaft gear may not be able to be read, but the flywheel large tooth can be read.
[0034] According to the timing design, the flywheel large tooth is located between the two signal slots on the camshaft. If slot +1 is not read, it is determined that the flywheel large tooth is currently in a position other than slot +1 (i.e., Figure 5 (The N3-N4 interval in the middle).
[0035] If +1 tooth is read, it is determined that the flywheel large tooth is currently between two adjacent grooves at the +1 slot position (i.e., Figure 5 (The N1-N6 interval in the middle).
[0036] In S104, the ECU initiates phase synchronization based on the positional relationship of the flywheel large teeth.
[0037] In summary, the engine phase synchronization method provided by this invention obtains a first timing signal of the flywheel through a speed sensor and a second timing signal of the camshaft through a phase sensor. When the flywheel rotates one revolution, the positional relationship between the large tooth and the signal slot on the camshaft in the first timing signal is determined by whether the pulse signal of the preset signal slot can be read in the second timing signal. That is, between which two signal slots on the camshaft the large tooth falls. The ECU initiates phase synchronization, and synchronization is completed when the flywheel rotates two revolutions. This reduces the synchronization time, improves engine starting efficiency, and enhances engine starting response.
[0038] In some embodiments of the present invention, the expression for the second included angle is as follows: C1 = F1 × (1 / 2) × [0.8, 1.2] Where C1 represents the second included angle and F1 represents the first included angle.
[0039] In some embodiments of the present invention, the expression for the third included angle is as follows: C0=(F1-C1)×(1 / 2)×[1,1.8] Where C0 represents the third included angle, F1 represents the first included angle, and C1 represents the second included angle.
[0040] In some embodiments of the present invention, the first included angle is in the range of [100, 140].
[0041] By setting the timing relationship of the engine timing, the large tooth of the flywheel is positioned between the signal slots of the camshaft gear, and also between the two signal slots containing the +1 slot.
[0042] For example, F1 ranges from 100 to 140, i.e., F1∈[100, 140].
[0043] The calculation method for C1 is as follows: C1 = F1 × (1 / 2) × [0.8, 1.2] If F1=126, then the upper limit of the design range of C1 is 126×0.5×1.2=75.6, and the lower limit of the design range is 126×0.5×0.8=50.4.
[0044] The calculation method for C0 is as follows: C0=(F1-C1)×(1 / 2)×[1,1.8] If F1=126 and C1=74, then the upper limit of the design range of C1 is (126-74)×0.5×1.8=46.8, and the lower limit of the design range is (126-74)×0.5×1=26.
[0045] For example, Figure 7 This is one of the schematic diagrams of the timing signal provided by the present invention. Figure 8 This is a second schematic diagram of the timing signal provided by the present invention, as shown below. Figure 7 and Figure 8 As shown, when a wide pulse is detected in the first timing signal, the pulse signal corresponding to the large tooth is read. Both the large tooth and the +1 slot fall within the N6-N1 interval.
[0046] Figure 9 The third schematic diagram of the timing signal provided by the present invention is as follows: Figure 9As shown, since the ratio of flywheel speed to camshaft speed is 2:1, meaning the engine flywheel rotates 2 revolutions for the camshaft rotates 1 revolution, the flywheel large gear will also fall into another range, such as the N3-N4 range.
[0047] The engine phase synchronization method provided in this embodiment of the invention, through engine timing design, can ensure that the large teeth of the flywheel fall between the signal slots of the camshaft gear, and also between the two signal slots containing the +1 slot.
[0048] In some embodiments of the present invention, determining the positional relationship between the large gear and the signal groove on the camshaft based on the first timing signal and the second timing signal includes: When a pulse signal corresponding to the large tooth is read in the first timing signal and a pulse signal corresponding to the preset signal slot is read in the second timing signal, it is determined that the position of the large tooth falls within the first interval. The first interval is the interval between two adjacent normal signal slots of the preset signal slot.
[0049] When the flywheel rotates 1 revolution, the camshaft gear rotates 0.5 revolutions. At this time, the +1 tooth of the camshaft gear may not be able to be read, but the flywheel large tooth can be read.
[0050] When a wide pulse is detected in the first timing signal, the pulse signal corresponding to the large tooth is read. According to the above timing design, the flywheel large tooth falls between the two signal slots of the camshaft.
[0051] By reading the second timing signal, when the pulse signal corresponding to the preset signal slot (i.e., slot +1) is read, it is determined that the flywheel large tooth is between two adjacent grooves at the preset signal slot position (e.g., Figure 5 In the N6-N1 interval (i.e., the first interval), the ECU initiates synchronization.
[0052] In some embodiments of the present invention, determining the positional relationship between the large gear and the signal slot on the camshaft based on the first timing signal and the second timing signal further includes: When a pulse signal corresponding to the large tooth is read in the first timing signal, and no pulse signal corresponding to the preset signal slot is read in the second timing signal, it is determined that the position of the large tooth falls in the second interval. The second interval is the interval that differs from the first interval by 360°.
[0053] When the flywheel rotates 1 revolution, the camshaft gear rotates 0.5 revolutions. At this time, the +1 tooth of the camshaft gear may not be able to be read, but the flywheel large tooth can be read.
[0054] When a wide pulse is detected in the first timing signal, the pulse signal corresponding to the large tooth is read. According to the above timing design, the flywheel large tooth falls between the two signal slots of the camshaft.
[0055] By reading the second timing signal, if the pulse signal corresponding to the preset signal slot (i.e., slot +1) is not read, it is determined that the flywheel large tooth is in an interval 360° different from the first interval (e.g., Figure 5 In the N3-N4 interval (i.e., the second interval), the ECU initiates synchronization.
[0056] This invention provides an engine timing design and starting strategy, employing the following strategy in the engine electronic control system: S1. When the engine starts, the timing signals of the flywheel and camshaft gear are obtained through sensors.
[0057] S2. When the flywheel rotates 1 revolution, the camshaft gear rotates 0.5 revolutions. At this time, the +1 tooth of the camshaft gear may not be able to be read, but the flywheel large tooth can be read.
[0058] S3. According to the timing design, the flywheel large tooth is located between the two signal slots on the camshaft. If the +1 tooth is not read, it is determined that the flywheel large tooth is in a position other than the +1 tooth, and the ECU initiates synchronization. If the +1 tooth is read, it is determined that the flywheel large tooth is between the two grooves at the +1 tooth position, and the ECU initiates synchronization.
[0059] S4. When the flywheel has rotated twice, synchronization is basically complete, reducing synchronization time and improving engine start-up efficiency.
[0060] Table 1 shows the performance parameters of the engine start-up response using existing synchronization methods, and Table 2 shows the performance parameters of the start-up response using the timing design and start-up strategy provided by this invention.
[0061] Table 1:
[0062] Table 2:
[0063] As can be seen from Tables 1 and 2, the timing design and start-up strategy provided by this invention can significantly improve engine start-up responsiveness, reduce start-up synchronization time by 0.7s, improve start-up performance, and can be applied across various engine platforms.
[0064] To better implement the engine phase synchronization method in the embodiments of the present invention, based on the engine phase synchronization method, correspondingly, as follows: Figure 10 As shown, this embodiment of the invention also provides an engine phase synchronization device, the engine phase synchronization device 1000 comprising: The first acquisition unit 1001 is used to acquire a first timing signal of the flywheel through a speed sensor; the flywheel includes 1 large tooth and 57 small teeth; the included angle between the large tooth and the speed sensor is the first included angle; The second acquisition unit 1002 is used to acquire a second timing signal of the camshaft through a phase sensor; the camshaft gear includes 6 normal signal slots and 1 preset signal slot; the second included angle between the phase sensor and the target signal slot is determined based on the first included angle; the target signal slot is any one of the normal signal slots; the third included angle between the preset signal slot and the target signal slot is determined based on the first included angle and the second included angle. The determining unit 1003 is used to determine the positional relationship between the large tooth and the signal groove on the camshaft based on the first timing signal and the second timing signal when the flywheel rotates 1 revolution. Synchronization unit 1004 is used to control the engine to perform phase synchronization based on the positional relationship.
[0065] The engine phase synchronization device 1000 provided in the above embodiments can realize the technical solutions described in the above engine phase synchronization method embodiments. The specific implementation principles of each module or unit can be found in the corresponding content in the above engine phase synchronization method embodiments, and will not be repeated here.
[0066] like Figure 11 As shown, the present invention also provides an electronic device 1100. The electronic device 1100 includes a processor 1101, a memory 1102, and a display 1103. Figure 11 Only some components of the electronic device 1100 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.
[0067] In some embodiments, processor 1101 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 1102 or process data, such as the engine phase synchronization method of the present invention.
[0068] In some embodiments, processor 1101 may be a single server or a group of servers. The server group may be centralized or distributed. In some embodiments, processor 1101 may be local or remote. In some embodiments, processor 1101 may be implemented on a cloud platform. In some embodiments, the cloud platform may include a private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, internal cloud, multi-cloud, etc., or any combination thereof.
[0069] In some embodiments, memory 1102 may be an internal storage unit of electronic device 1100, such as a hard disk or memory of electronic device 1100. In other embodiments, memory 1102 may also be an external storage device of electronic device 1100, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 1100.
[0070] Furthermore, the memory 1102 may include both internal storage units of the electronic device 1100 and external storage devices. The memory 1102 is used to store application software and various types of data installed on the electronic device 1100.
[0071] In some embodiments, display 1103 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an organic light-emitting diode (OLED) touchscreen, etc. Display 1103 is used to display information from electronic device 1100 and to display a visual user interface. Components 1101-1103 of electronic device 1100 communicate with each other via a system bus.
[0072] In one embodiment, when processor 1101 executes the engine phase synchronization program in memory 1102, the following steps can be implemented: The first timing signal of the flywheel is obtained by a speed sensor; the flywheel includes 1 large tooth and 57 small teeth; the angle between the large tooth and the speed sensor is the first angle. A second timing signal of the camshaft is acquired through a phase sensor; the camshaft gear includes 11 normal signal slots and 1 preset signal slot; the second included angle between the phase sensor and the target signal slot is determined based on the first included angle; the target signal slot is any one of the normal signal slots; the third included angle between the preset signal slot and the target signal slot is determined based on the first included angle and the second included angle. When the flywheel rotates one revolution, the positional relationship between the large gear and the signal slot on the camshaft is determined based on the first timing signal and the second timing signal; Based on the aforementioned positional relationship, the engine is controlled to perform phase synchronization.
[0073] It should be understood that when the processor 1101 executes the engine phase synchronization program in the memory 1102, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.
[0074] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 1100 mentioned. Electronic device 1100 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, electronic device 1100 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).
[0075] Accordingly, embodiments of the present invention also provide a computer-readable storage medium for storing computer-readable programs or instructions. When the programs or instructions are executed by a processor, they can implement the steps or functions of the engine phase synchronization method provided in the above-described method embodiments.
[0076] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to perform the steps or functions in the engine phase synchronization method provided in the above-described method embodiments.
[0077] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware (such as a processor, controller, etc.), and the computer program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.
[0078] The engine phase synchronization method, device, electronic equipment, and storage medium provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. An engine phase synchronization method characterized by, The method comprises the steps of: obtaining a first time sequence signal of a flywheel through a rotating speed sensor; the flywheel comprises one large tooth and 57 small teeth; an included angle between the large tooth and the rotating speed sensor is a first included angle; obtaining a second time sequence signal of a camshaft through a phase sensor; the gear of the camshaft comprises six normal signal grooves and one preset signal groove; a second included angle between the phase sensor and a target signal groove is determined based on the first included angle; the target signal groove is any one of the normal signal grooves; a third included angle between the preset signal groove and the target signal groove is determined based on the first included angle and the second included angle; when the flywheel rotates one circle, determining a position relationship between the large tooth and the signal groove on the camshaft based on the first time sequence signal and the second time sequence signal; controlling the engine to perform phase synchronization based on the position relationship.
2. The engine phase synchronization method of claim 1, wherein, The step of determining the position relationship between the large tooth and the signal groove on the camshaft based on the first time sequence signal and the second time sequence signal comprises the steps of: when a pulse signal corresponding to the large tooth is read in the first time sequence signal and a pulse signal corresponding to the preset signal groove is read in the second time sequence signal, judging that the position of the large tooth falls in a first interval; the first interval is an interval between two normal signal grooves adjacent to the preset signal groove.
3. The engine phase synchronization method of claim 2, wherein, The step of determining the position relationship between the large tooth and the signal groove on the camshaft based on the first time sequence signal and the second time sequence signal further comprises the steps of: when a pulse signal corresponding to the large tooth is read in the first time sequence signal and a pulse signal corresponding to the preset signal groove is not read in the second time sequence signal, judging that the position of the large tooth falls in a second interval; the second interval is an interval different from the first interval by 360°.
4. The engine phase synchronization method of claim 1, wherein The expression of the second included angle is as follows: C1=F1×(1 / 2)×[0.8, 1.2] wherein C1 represents the second included angle, and F1 represents the first included angle.
5. The engine phase synchronization method of claim 1, wherein, The expression of the third included angle is as follows: C0=(F1-C1)×(1 / 2)×[1, 1.8] wherein C0 represents the third included angle, F1 represents the first included angle, and C1 represents the second included angle.
6. The engine phase synchronization method of claim 1, wherein, The value range of the first included angle is [100, 140].
7. An engine phase synchronizing apparatus characterized by comprising: The method comprises the steps of: a first obtaining unit is configured to obtain a first time sequence signal of a flywheel through a rotating speed sensor; the flywheel comprises one large tooth and 57 small teeth; an included angle between the large tooth and the rotating speed sensor is a first included angle; a second obtaining unit is configured to obtain a second time sequence signal of a camshaft through a phase sensor; the gear of the camshaft comprises six normal signal grooves and one preset signal groove; a second included angle between the phase sensor and a target signal groove is determined based on the first included angle; the target signal groove is any one of the normal signal grooves; a third included angle between the preset signal groove and the target signal groove is determined based on the first included angle and the second included angle; a determining unit is configured to, when the flywheel rotates one circle, determine a position relationship between the large tooth and the signal groove on the camshaft based on the first time sequence signal and the second time sequence signal. A synchronization unit is configured to control the engine to perform phase synchronization based on the position relationship.
8. An electronic device, comprising: comprise a memory and a processor, The memory is configured to store a program. The processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps in the engine phase synchronization method according to any one of claims 1 to 6.
9. A computer-readable storage medium, characterized in that, A computer readable program or instruction is stored, and the program or instruction is executed by a processor to implement the steps in the engine phase synchronization method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that, The computer program is executed by a processor to implement the steps in the engine phase synchronization method according to any one of claims 1 to 6.