Diesel engine injection timing correction method and device, diesel vehicle and storage medium

Abstract

This invention discloses a method, apparatus, diesel vehicle, and storage medium for correcting diesel engine injection timing. The method includes: correcting the basic injection timing of the diesel engine based on the intake manifold temperature to obtain a manifold temperature timing correction; correcting the basic injection timing of the diesel engine based on the ambient temperature to obtain an ambient temperature timing correction; determining the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air coefficient deviation correction coefficient; determining the diesel engine injection timing correction value based on the sensor's fault status; and determining the corrected diesel engine injection timing based on the diesel engine injection timing correction value and the basic injection timing. This invention can achieve rational adjustment of diesel engine injection timing, preventing excessively high in-cylinder combustion knock pressure exceeding limits, thereby ensuring the safety of the diesel engine structure.

Description

Technical Field

[0001] The present invention relates to the field of diesel engine control technology, and in particular to a method, apparatus, diesel vehicle, and storage medium for correcting diesel engine injection timing. Background Technology

[0002] The working principle of a diesel engine is as follows: pure air is drawn in during the intake stroke, and fuel is injected into the high-temperature, high-pressure air at top dead center of the compression stroke for combustion, generating heat to provide power. However, to ensure a good air-fuel mixture and a perfect combustion process, the injector's injection timing must be advanced by a certain amount; this advance is called injection timing. Controlling the injection timing of a diesel engine is essentially controlling the injection advance angle of the injector.

[0003] Because diesel engines cannot achieve reasonable adjustment of injection timing under special environmental conditions, such as extremely low ambient temperature or extremely low engine temperature, the combustion knock pressure in the diesel engine cylinder is too high and exceeds the limit, which poses a problem that endangers the structural safety of the diesel engine. Summary of the Invention

[0004] This invention provides a method, apparatus, diesel vehicle, and storage medium for correcting diesel engine injection timing, so as to achieve rational adjustment of diesel engine injection timing, avoid excessive combustion knock pressure in the diesel engine cylinder exceeding the limit, and thus ensure the safety of the diesel engine structure.

[0005] According to one aspect of the present invention, a method for correcting the injection timing of a diesel engine is provided, the method comprising:

[0006] The basic fuel injection timing of the diesel engine is corrected based on the intake manifold temperature to obtain the manifold temperature timing correction amount.

[0007] The basic fuel injection timing of the diesel engine is corrected based on the ambient temperature to obtain the ambient temperature timing correction amount.

[0008] The total injection timing correction of the diesel engine is determined based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction factor.

[0009] The diesel engine injection timing correction value is determined based on the sensor's fault status, and the corrected diesel engine injection timing is determined based on the diesel engine injection timing correction value and the basic diesel engine injection timing.

[0010] Optionally, before correcting the basic injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount, the method further includes: determining the basic injection timing of the diesel engine based on a chart that can be queried for engine speed, engine cycle fuel supply, and basic injection timing.

[0011] Optionally, the step of correcting the basic injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction includes:

[0012] The manifold temperature correction coefficient is determined based on the intake manifold temperature. The diesel engine manifold injection timing correction is determined based on the engine speed and the engine cycle fuel supply. The manifold temperature timing correction amount is determined based on the manifold temperature correction coefficient and the diesel engine manifold injection timing correction.

[0013] Optionally, the step of correcting the basic injection timing of the diesel engine based on the ambient temperature to obtain the ambient temperature timing correction includes:

[0014] An ambient temperature correction coefficient is determined based on the ambient temperature. The diesel engine ambient temperature-corrected injection timing is determined based on the engine speed and the engine's circulating fuel supply. The ambient temperature timing correction amount is determined based on the ambient temperature correction coefficient and the diesel engine ambient temperature-corrected injection timing.

[0015] Optionally, determining the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient includes:

[0016] The excess air coefficient deviation correction coefficient is determined based on the target excess air coefficient and the excess air coefficient deviation. The total injection timing correction of the diesel engine is the product of the sum of the manifold temperature timing correction and the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient.

[0017] Optionally, the fault status of the sensor includes at least one of the following: intake manifold temperature sensor fault status, ambient temperature sensor fault status, intake pressure sensor fault status, venturi pressure sensor fault status, venturi differential pressure sensor fault status, and venturi temperature sensor fault status.

[0018] Optionally, determining the corrected diesel engine injection timing based on the diesel engine injection timing correction value and the basic diesel engine injection timing includes:

[0019] When the fault state of the sensor meets the preset conditions, the total injection timing correction of the diesel engine is equal to the injection timing correction value of the diesel engine. The injection timing correction value of the diesel engine is added to the basic injection timing of the diesel engine to obtain the corrected injection timing of the diesel engine.

[0020] According to another aspect of the present invention, a diesel engine injection timing correction device is provided, the diesel engine injection timing correction device comprising:

[0021] The manifold temperature timing correction determination module is used to correct the basic fuel injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount.

[0022] The ambient temperature timing correction determination module is used to correct the basic fuel injection timing of the diesel engine based on the ambient temperature to obtain the ambient temperature timing correction amount.

[0023] The total injection timing correction determination module is used to determine the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient.

[0024] The fuel injection timing correction determination module is used to determine the fuel injection timing correction value of the diesel engine based on the fault status of the sensor, and to determine the corrected fuel injection timing of the diesel engine based on the fuel injection timing correction value and the basic fuel injection timing of the diesel engine.

[0025] According to another aspect of the present invention, a diesel vehicle is also provided, the diesel vehicle comprising:

[0026] One or more processors;

[0027] Memory, used to store one or more programs;

[0028] When the one or more programs are executed by the one or more processors, the one or more processors implement the diesel engine injection timing correction method as described in the embodiments of the present invention.

[0029] According to another aspect of the present invention, a computer-readable storage medium is also provided, on which a computer program is stored, characterized in that, when executed by a processor, the computer program implements the diesel engine injection timing correction method as described in the embodiments of the present invention.

[0030] The technical solution of this invention proposes a method for correcting the injection timing of a diesel engine to prevent excessive combustion pressure. This method is a diesel engine injection timing correction strategy under special environmental conditions, mainly applied in the software development and calibration of diesel engine electronic control systems. It involves the performance control and calibration of diesel engines under non-standard environments, simulating bench and vehicle conditions. This correction method can achieve injection timing correction under different intake manifold temperatures and different ambient temperatures. The introduced excess air coefficient deviation coefficient function allows for the rational assignment of correction values ​​during dynamic processes, ensuring the mechanical safety of the diesel engine without reducing the acceleration response rate. Furthermore, it can achieve rational adjustment of the diesel engine injection timing, preventing excessively high combustion pressure exceeding limits in the cylinder, thereby ensuring the structural safety of the diesel engine. In summary, this invention solves the problem that under special environmental conditions, the inability to achieve rational adjustment of injection timing leads to excessively high combustion pressure exceeding limits in the cylinder, endangering the structural safety of the diesel engine.

[0031] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0032] 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.

[0033] Figure 1 This is a flowchart of a diesel engine injection timing correction method provided by an embodiment of the present invention;

[0034] Figure 2 This is a flowchart of another method for correcting diesel engine injection timing according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of a fuel injection timing correction strategy for preventing excessive burst pressure in a diesel engine, provided by an embodiment of the present invention.

[0036] Figure 4 This is a flowchart of another method for correcting diesel engine injection timing according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of a diesel engine injection timing correction device according to an embodiment of the present invention;

[0038] Figure 6This is a structural schematic diagram of a diesel vehicle according to an embodiment of the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Figure 1 This is a flowchart of a diesel engine injection timing correction method according to an embodiment of the present invention, with reference to... Figure 1 This invention provides a method for correcting the injection timing of a diesel engine. This method can be executed by a diesel engine injection timing correction device, which can be integrated into a diesel vehicle and can be implemented by software and / or hardware.

[0042] Methods for correcting diesel engine injection timing include:

[0043] S110. Correct the basic fuel injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount.

[0044] Specifically, the method of determining diesel engine injection timing by querying charts for engine speed, engine fuel supply, and basic injection timing remains unchanged. However, an intake manifold temperature correction for injection timing is added. Using intake manifold temperature as input, the manifold temperature correction coefficient is obtained by querying available curves. Using engine speed and engine fuel supply as input, the corrected diesel engine manifold injection timing is obtained by querying available charts for intake manifold temperature correction. The manifold temperature correction coefficient and the corrected diesel engine manifold injection timing are then multiplied to calculate the manifold temperature timing correction amount.

[0045] S120. Correct the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain the ambient temperature timing correction amount.

[0046] Specifically, the method of determining diesel engine injection timing by querying charts for engine speed, engine fuel supply, and basic injection timing remains unchanged. However, an ambient temperature correction for injection timing is added. Using ambient temperature as input, the ambient temperature correction coefficient is obtained by querying available curves. Using engine speed and engine fuel supply as input, the ambient temperature-corrected injection timing is obtained by querying available charts. The ambient temperature correction coefficient and the ambient temperature-corrected injection timing are then multiplied to calculate the ambient temperature timing correction amount.

[0047] S130. The total injection timing correction of the diesel engine is determined based on the manifold temperature timing correction, ambient temperature timing correction, and excess air coefficient deviation correction coefficient.

[0048] Specifically, the results of correcting the injection timing under the manifold temperature timing correction and the ambient temperature timing correction (diesel engine manifold corrected injection timing and diesel engine ambient temperature corrected injection timing) are added together, and the sum is multiplied by the excess air coefficient deviation correction factor to obtain the total injection timing correction of the diesel engine.

[0049] S140. Determine the diesel engine injection timing correction value based on the sensor's fault status, and determine the corrected diesel engine injection timing based on the diesel engine injection timing correction value and the basic diesel engine injection timing.

[0050] Specifically, the correction function is turned off after the relevant sensor malfunctions. After the fault status of the relevant sensor is determined, the diesel engine injection timing correction value is determined. The sum of the diesel engine injection timing correction value and the basic diesel engine injection timing is the corrected diesel engine injection timing.

[0051] The technical solution of this invention proposes a method for correcting the injection timing of a diesel engine to prevent excessive combustion pressure. This method is a diesel engine injection timing correction strategy under special environmental conditions, mainly applied in the software development and calibration of diesel engine electronic control systems. It involves the performance control and calibration of diesel engines under non-standard environments, simulating bench and vehicle conditions. This correction method can achieve injection timing correction under different intake manifold temperatures and different ambient temperatures. The introduced excess air coefficient deviation coefficient function allows for the rational assignment of correction values ​​during dynamic processes, ensuring the mechanical safety of the diesel engine without reducing the acceleration response rate. Furthermore, it can achieve rational adjustment of the diesel engine injection timing, preventing excessively high combustion pressure exceeding limits in the cylinder, thereby ensuring the structural safety of the diesel engine. In summary, this invention solves the problem that under special environmental conditions, the inability to achieve rational adjustment of injection timing leads to excessively high combustion pressure exceeding limits in the cylinder, endangering the structural safety of the diesel engine.

[0052] This embodiment is a refinement based on the above embodiment. Figure 2 This is a flowchart of another diesel engine injection timing correction method provided by an embodiment of the present invention. Figure 3 This is a schematic diagram of a diesel engine injection timing correction strategy to prevent excessive burst pressure according to an embodiment of the present invention. (Refer to...) Figure 2 and Figure 3 The method includes:

[0053] S210. Based on the available charts for engine speed, engine fuel supply, and basic injection timing, determine the basic injection timing of the diesel engine.

[0054] Specifically, using engine speed 1 and engine fuel supply 2 as input conditions, the basic fuel injection timing of the diesel engine is obtained by looking up the table 14 of the table through the software.

[0055] S220. The basic fuel injection timing of the diesel engine is corrected based on the intake manifold temperature to obtain the manifold temperature timing correction amount.

[0056] S230. Correct the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain the ambient temperature timing correction amount.

[0057] S240. The total injection timing correction of the diesel engine is determined based on the manifold temperature timing correction, ambient temperature timing correction, and excess air coefficient deviation correction coefficient.

[0058] S250. Determine the diesel engine injection timing correction value based on the sensor's fault status, and determine the corrected diesel engine injection timing based on the diesel engine injection timing correction value and the basic diesel engine injection timing.

[0059] This embodiment is a refinement based on the above embodiment. Figure 4 This is a flowchart of another diesel engine injection timing correction method according to an embodiment of the present invention, see reference. Figure 3 and Figure 4 The method includes:

[0060] S310. Based on the available charts for engine speed, engine cycle fuel supply, and basic injection timing, determine the basic injection timing of the diesel engine.

[0061] S320. Determine the manifold temperature correction coefficient based on the intake manifold temperature, determine the diesel engine manifold injection timing correction based on the engine speed and engine circulating fuel supply, and determine the manifold temperature timing correction amount based on the manifold temperature correction coefficient and the diesel engine manifold injection timing correction.

[0062] Specifically, taking the intake manifold temperature 5 as the input condition, the manifold temperature correction coefficient is obtained by querying the curve 18 that can be queried for intake manifold temperature correction. Taking the engine speed 1 and engine fuel supply 2 as the input conditions, the diesel engine manifold correction injection timing is obtained by querying the chart 17 that can be queried for intake manifold temperature correction injection timing. The manifold temperature correction coefficient and the diesel engine manifold correction injection timing are multiplied by the product of the operation 21 to calculate the manifold temperature timing correction amount.

[0063] S330. Determine the ambient temperature correction factor based on the ambient temperature, determine the diesel engine ambient temperature correction injection timing based on the engine speed and engine circulating fuel supply, and determine the ambient temperature timing correction amount based on the ambient temperature correction factor and the diesel engine ambient temperature correction injection timing.

[0064] Specifically, taking ambient temperature 6 as the input condition, the ambient temperature correction coefficient is obtained by querying the available curve 20 for ambient temperature correction. Taking engine speed 1 and engine fuel supply 2 as the input conditions, the diesel engine ambient temperature correction injection timing is obtained by querying the available chart 19 for ambient temperature correction injection timing. The ambient temperature correction coefficient and the diesel engine ambient temperature correction injection timing are multiplied by operation 21 to calculate the ambient temperature timing correction amount.

[0065] S340. Determine the excess air coefficient deviation correction coefficient based on the target excess air coefficient and the excess air coefficient deviation. The total injection timing correction of the diesel engine is the product of the sum of the manifold temperature timing correction and the ambient temperature timing correction and the excess air coefficient deviation correction coefficient.

[0066] Specifically, using the target excess air coefficient 3 and excess air coefficient deviation 4 as input conditions, the excess air coefficient deviation correction coefficient is obtained by querying the chart 16 that can be used to query the excess air coefficient deviation correction coefficient; the total injection timing correction of the diesel engine is calculated by adding the manifold temperature timing correction and the ambient temperature timing correction by operation 22 and multiplying them by the excess air coefficient deviation correction coefficient by operation 21.

[0067] In practical applications, excess air coefficient sensors can be used to collect excess air coefficient values, which can then be used as the measured excess air coefficient values. The target excess air coefficient and the excess air coefficient deviation can be set as needed.

[0068] Continue to refer to Figure 3 Optionally, the fault status of the sensor includes at least one of the following: intake manifold temperature sensor fault status, ambient temperature sensor fault status, intake pressure sensor fault status, venturi pressure sensor fault status, venturi differential pressure sensor fault status, and venturi temperature sensor fault status.

[0069] Specifically, the following conditions are used as input conditions: intake manifold temperature sensor fault state 7, ambient temperature sensor fault state 8, intake pressure sensor fault state 9, venturi pressure sensor fault state 10, venturi differential pressure sensor fault state 11, and venturi temperature sensor fault state 12. If any of the above conditions are faulty, the output result 24 of the diesel engine injection timing correction value is equal to 0 and the input correction amount 15 is selected through condition selection operation 23.

[0070] S350 When the fault condition of the sensor meets the preset conditions, the total injection timing correction of the diesel engine is equal to the diesel engine injection timing correction value. The diesel engine injection timing correction value is added to the basic injection timing of the diesel engine to obtain the corrected diesel engine injection timing.

[0071] Specifically, after the condition selection operation 23 is performed, if the sensor is not faulty, the total fuel injection timing correction of the diesel engine is equal to the fuel injection timing correction value 24 of the diesel engine. The fuel injection timing correction value 24 of the diesel engine is added to the basic fuel injection timing of the diesel engine in operation 22 to obtain the corrected fuel injection timing of the diesel engine 13.

[0072] Figure 5 This is a schematic diagram of a diesel engine injection timing correction device according to an embodiment of the present invention. (Refer to...) Figure 5 The present invention also provides a diesel engine injection timing correction device, which includes:

[0073] The manifold temperature timing correction determination module 501 is used to correct the basic fuel injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount.

[0074] The ambient temperature timing correction determination module 502 is used to correct the basic fuel injection timing of the diesel engine based on the ambient temperature to obtain the ambient temperature timing correction amount.

[0075] The total injection timing correction determination module 503 is used to determine the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient.

[0076] The fuel injection timing correction determination module 504 is used to determine the fuel injection timing correction value of the diesel engine based on the fault status of the sensor, and to determine the corrected fuel injection timing of the diesel engine based on the fuel injection timing correction value and the basic fuel injection timing of the diesel engine.

[0077] The above-mentioned diesel engine injection timing correction device can perform the diesel engine injection timing correction method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of performing the diesel engine injection timing correction method.

[0078] Optionally, the manifold temperature timing correction determination module 501 is specifically used to determine the manifold temperature correction coefficient based on the intake manifold temperature, determine the diesel engine manifold corrected injection timing based on the engine speed and the engine cycle fuel supply, and determine the manifold temperature timing correction amount based on the manifold temperature correction coefficient and the diesel engine manifold corrected injection timing.

[0079] Optionally, the ambient temperature timing correction determination module 502 is specifically used to determine the ambient temperature correction coefficient based on the ambient temperature, determine the diesel engine ambient temperature corrected injection timing based on the engine speed and engine circulating fuel supply, and determine the ambient temperature timing correction amount based on the ambient temperature correction coefficient and the diesel engine ambient temperature corrected injection timing.

[0080] Optionally, the total injection timing correction module 503 is specifically used to determine the excess air coefficient deviation correction coefficient based on the target excess air coefficient and the excess air coefficient deviation. The product of the manifold temperature timing correction and the ambient temperature timing correction and the excess air coefficient deviation correction coefficient is the total injection timing correction of the diesel engine.

[0081] Optionally, the fuel injection timing correction determination module 504 is specifically used to determine that when the fault state of the sensor meets the preset conditions, the total fuel injection timing correction of the diesel engine is equal to the fuel injection timing correction value of the diesel engine, and the fuel injection timing correction value of the diesel engine is added to the basic fuel injection timing of the diesel engine to obtain the corrected fuel injection timing of the diesel engine.

[0082] Figure 6A schematic diagram of a diesel vehicle 610, which can be used to implement embodiments of the present invention, is shown. The diesel vehicle is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The diesel vehicle can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0083] like Figure 6 As shown, the diesel vehicle 610 includes at least one processor 611 and a memory, such as a read-only memory (ROM) 612 and a random access memory (RAM) 613, communicatively connected to the processor 611. The memory stores computer programs executable by the processor. The processor 611 can perform various appropriate actions and processes based on the computer program stored in the ROM 612 or loaded from storage unit 618 into the RAM 613. The RAM 613 can also store various programs and data required for the operation of the diesel vehicle 610. The processor 611, ROM 612, and RAM 613 are interconnected via a bus 614. An input / output (I / O) interface 615 is also connected to the bus 614.

[0084] Multiple components in the diesel vehicle 610 are connected to the I / O interface 615, including: an input unit 616, such as a keyboard, mouse, etc.; an output unit 617, such as various types of displays, speakers, etc.; a storage unit 618, such as a disk, optical disk, etc.; and a communication unit 619, such as a network card, modem, wireless transceiver, etc. The communication unit 619 allows the diesel vehicle 610 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0085] Processor 611 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 611 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 611 performs the various methods and processes described above, such as the method for correcting diesel engine injection timing.

[0086] In some embodiments, the diesel engine injection timing correction method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 618. In some embodiments, part or all of the computer program may be loaded and / or installed on the diesel vehicle 610 via ROM 612 and / or communication unit 619. When the computer program is loaded into RAM 613 and executed by processor 611, one or more steps of the diesel engine injection timing correction method described above may be performed. Alternatively, in other embodiments, processor 611 may be configured to perform the diesel engine injection timing correction method by any other suitable means (e.g., by means of firmware).

[0087] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0088] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0089] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0090] To provide interaction with the user, the systems and technologies described herein can be implemented in a diesel vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the diesel vehicle. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0091] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0092] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0093] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0094] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for correcting the injection timing of a diesel engine, characterized in that, include: The basic fuel injection timing of the diesel engine is corrected based on the intake manifold temperature to obtain the manifold temperature timing correction amount. The basic fuel injection timing of the diesel engine is corrected based on the ambient temperature to obtain the ambient temperature timing correction amount. The total injection timing correction of the diesel engine is determined based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction factor. The diesel engine injection timing correction value is determined based on the sensor's fault status, and the corrected diesel engine injection timing is determined based on the diesel engine injection timing correction value and the basic diesel engine injection timing.

2. The method according to claim 1, characterized in that, Before correcting the basic injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount, the method further includes: determining the basic injection timing of the diesel engine based on the available charts for engine speed, engine fuel supply, and basic injection timing.

3. The method according to claim 2, characterized in that, The correction of the basic fuel injection timing of the diesel engine based on the intake manifold temperature, to obtain the manifold temperature timing correction amount, includes: The manifold temperature correction coefficient is determined based on the intake manifold temperature. The diesel engine manifold injection timing correction is determined based on the engine speed and the engine cycle fuel supply. The manifold temperature timing correction amount is determined based on the manifold temperature correction coefficient and the diesel engine manifold injection timing correction.

4. The method according to claim 2, characterized in that, The correction of the basic injection timing of the diesel engine based on ambient temperature to obtain the ambient temperature timing correction amount includes: An ambient temperature correction coefficient is determined based on the ambient temperature. The diesel engine ambient temperature-corrected injection timing is determined based on the engine speed and the engine's circulating fuel supply. The ambient temperature timing correction amount is determined based on the ambient temperature correction coefficient and the diesel engine ambient temperature-corrected injection timing.

5. The method according to claim 1, characterized in that, The determination of the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient includes: The excess air coefficient deviation correction coefficient is determined based on the target excess air coefficient and the excess air coefficient deviation. The total injection timing correction of the diesel engine is the product of the sum of the manifold temperature timing correction and the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient.

6. The method according to claim 1, characterized in that, The fault status of the sensors includes at least one of the following: intake manifold temperature sensor fault status, ambient temperature sensor fault status, intake pressure sensor fault status, venturi pressure sensor fault status, venturi differential pressure sensor fault status, and venturi temperature sensor fault status.

7. The method according to claim 1, characterized in that, The process of determining the corrected diesel engine injection timing based on the diesel engine injection timing correction value and the basic diesel engine injection timing includes: When the fault state of the sensor meets the preset conditions, the total injection timing correction of the diesel engine is equal to the injection timing correction value of the diesel engine. The injection timing correction value of the diesel engine is added to the basic injection timing of the diesel engine to obtain the corrected injection timing of the diesel engine.

8. A diesel engine injection timing correction device, characterized in that, include: The manifold temperature timing correction determination module is used to correct the basic fuel injection timing of the diesel engine based on the intake manifold temperature to obtain the manifold temperature timing correction amount. The ambient temperature timing correction determination module is used to correct the basic fuel injection timing of the diesel engine based on the ambient temperature to obtain the ambient temperature timing correction amount. The total injection timing correction determination module is used to determine the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air coefficient deviation correction coefficient. The fuel injection timing correction determination module is used to determine the fuel injection timing correction value of the diesel engine based on the fault status of the sensor, and to determine the corrected fuel injection timing of the diesel engine based on the fuel injection timing correction value and the basic fuel injection timing of the diesel engine.

9. A diesel vehicle, characterized in that, The diesel vehicles include: One or more processors; Memory, used to store 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 diesel engine injection timing correction method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the diesel engine injection timing correction method as described in any one of claims 1-7.

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