CN113482773A - Fault management method and device for electric control system of off-road diesel engine - Google Patents
Fault management method and device for electric control system of off-road diesel engine Download PDFInfo
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- CN113482773A CN113482773A CN202110757345.1A CN202110757345A CN113482773A CN 113482773 A CN113482773 A CN 113482773A CN 202110757345 A CN202110757345 A CN 202110757345A CN 113482773 A CN113482773 A CN 113482773A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a fault management method for an electric control system of a non-road diesel engine, which comprises the following steps: configuring the component type and the corresponding fault type of the system according to the requirements; defining corresponding fault management state information for each fault type according to the configured component type and the fault type corresponding to each component type; when a certain fault occurs, configuring a fault management mode of the fault according to corresponding fault management state information; confirming diagnosis after the fault is subjected to a corresponding fault confirmation diagnosis mode, selecting a corresponding fault alarm mode, and storing fault information according to the fault storage priority; after the fault flag bit is set, a corresponding fault processing mode is obtained according to the fault management state information corresponding to the fault; when a certain fault is repaired, configuring a fault management mode of the fault according to corresponding fault management state information; the fault is repaired after passing through a corresponding fault repairing mode, and fault information is deleted according to the fault storage priority; and after the fault meets the corresponding fault processing exit condition, exiting the fault processing. The invention can flexibly and efficiently adapt to various different requirements.
Description
Technical Field
The invention belongs to the technical field of OBD in an electric control system of a non-road diesel engine, and particularly relates to a fault management method for the electric control system of the non-road diesel engine.
Background
Most of fault management methods for non-road diesel engine electric control systems in the market adopt a preset diagnosis and processing mode after component faults. The fault management method is not flexible enough, when the requirement of a customer changes, the control software of the electric control fuel system needs to be modified, and the target realization period is long.
At present, few control methods which are flexibly configured for the fault processing management modularization of the non-road electric control diesel engine exist.
Disclosure of Invention
The invention aims to provide a fault management method and a fault management device for an electric control system of a non-road diesel engine, which can realize modularization and configurability of fault diagnosis processing in consideration of different fault types and fault management modes of customers of the non-road diesel engine for the diesel engine, thereby flexibly and efficiently adapting to various different requirements. In order to achieve the technical purpose, the embodiment of the invention adopts the technical scheme that:
in a first aspect, an embodiment of the present invention provides a fault management method for an electric control system of a non-road diesel engine, including:
step S1, configuring the component type and the corresponding fault type of the system according to the requirement;
step S2, defining corresponding fault management state information for each fault type according to the configured component type and the fault type corresponding to each component type;
step S3, when some fault occurs, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S4, the fault is confirmed after passing through the corresponding fault confirmation mode, and the corresponding fault alarm mode is selected, and the fault information is stored according to the fault storage priority; after the fault is diagnosed, setting the corresponding fault flag bit;
step S5, after the fault flag bit is set, a corresponding fault processing mode is obtained according to the fault management state information corresponding to the fault;
step S6, if there are several faults happening at the same time, comparing all fault processing modes, selecting the fault processing mode with higher priority to process the fault;
step S7, when a fault is repaired, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S8, the fault is repaired after passing through the corresponding fault repairing mode, and the fault information is deleted according to the fault storage priority;
in step S9, the failure processing is exited after the failure satisfies the corresponding failure processing exit condition.
Further, the fault management status information includes the following functional items: a fault diagnosis mode, a fault repair mode, a fault alarm mode, a fault storage priority, a fault information deletion condition, a fault processing mode and a fault processing exit condition; and are defined by a plurality of bits, respectively.
Further, in the present invention,
the first bit of the fault management state information is used for selecting a fault diagnosis method; the failure diagnosis method comprises immediate diagnosis of the failure and diagnosis after several operation cycles after the failure is confirmed; when the fault is detected to occur, the fault diagnosis action is carried out according to the mode defined by the first bit section;
the second section bit of the fault management state information is used for selecting a fault repairing mode; the fault repairing mode comprises that the fault can be repaired immediately after the fault is removed, and the fault needs to be repaired after a plurality of operation cycles or accumulated fault-free operation for a specified time after the fault is removed; when the fault is detected to be repaired, performing fault repairing action according to a fault repairing mode defined by the second bit section;
the third bit of the fault management state information is used for selecting a fault alarm mode when a fault occurs; the fault alarm mode comprises that the fault does not alarm after the diagnosis is confirmed, the fault alarms by using a fault lamp after the diagnosis is confirmed, the fault alarms by using a buzzer after the diagnosis is confirmed, and the fault alarms by using the fault lamp and the buzzer simultaneously after the diagnosis is confirmed; when the confirmed diagnosis of the fault is detected, corresponding fault alarm action is carried out according to the mode defined by the third section of bit;
the fourth bit of the fault management state information is used for selecting the fault storage priority; when the confirmed fault diagnosis is detected, storing fault information and deleting the fault information according to the storage priority of each fault;
the fifth bit of the fault management state information is used for selecting a fault information deleting condition; the fault information deleting condition comprises that the fault information of the fault can be deleted immediately after the fault is repaired, and the fault information of the fault needs to be deleted when the engine runs for a period of time without the fault after the fault is repaired; after the fault is repaired, carrying out fault information deleting operation according to the fault information deleting condition of the fifth bit identification;
the sixth bit of the fault management state information is used for selecting a fault processing mode; when the confirmed diagnosis of the fault is detected, selecting a fault processing mode according to the sixth bit identifier;
the seventh bit of the fault management state information is used for selecting a fault processing exit condition; and when the fault is detected to be repaired, quitting the fault processing according to the condition met by the seventh bit identification.
Further, in the present invention,
after the confirmed diagnosis of the fault is detected, the storage of the fault information and the deletion of the fault information are performed according to the storage priority of each fault, which specifically comprises the following steps: a certain number of fault information storage positions are preset, and when all the fault information storage positions are full, the fault information with lower storage priority is deleted firstly, and then the fault information which needs to be stored currently is stored.
Further, in the present invention,
the fault processing mode comprises the following steps: the processing mode after the occurrence of the fault is only an alarm but not a processing mode, the processing mode after the occurrence of the fault is an emergency stop mode, the processing mode after the occurrence of the fault is a certain slow stop mode, and the processing mode after the occurrence of the fault is a certain limp home mode.
Further, in the present invention,
the failure handling exit condition includes: the failure process is exited upon detection of the fault confirmed flag position 0, upon detection of the current cycle fault confirmed flag position 0, upon detection of the cycle past fault confirmed flag position 0, upon detection of the confirmed fault flag position or the current cycle fault confirmed flag position 0.
In a second aspect, an embodiment of the present invention further provides a fault management device for an electric control system of an off-road diesel engine, including:
a memory storing a computer program;
a processor for executing the computer program, the computer program when executed performing the steps of the method as described above.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: through modular design, the fault types to be managed can be selected according to the requirements of client machine types, and corresponding fault management modes are flexibly configured according to the selected faults so as to meet the requirements of different types of non-road diesel engines. In the process of selecting the fault type and configuring the fault management mode, only the calibration parameters need to be changed without modifying the control software.
Drawings
Fig. 1 is a schematic diagram illustrating the meaning of each bit of the fault management status information in the embodiment of the present invention.
Fig. 2 is a flowchart of a fault management method in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In a first aspect, an embodiment of the present invention provides a fault management method for an off-road diesel engine electric control system, including:
step S1, configuring the component type and the corresponding fault type of the system according to the requirement;
there may be many component types of the system, and many failure types for each component; for example, there are 20 fault types defined for a certain component;
step S2, defining corresponding fault management state information for each fault type according to the configured component type and the fault type corresponding to each component type;
the fault management status information includes the following functional items: a fault diagnosis mode, a fault repair mode, a fault alarm mode, a fault storage priority, a fault information deletion condition, a fault processing mode and a fault processing exit condition; the fault management status information is detailed in the table of FIG. 1;
the fault management state information comprises a plurality of bit bits;
s201, bit0 of the fault management state information is used for selecting a fault diagnosis confirming mode; when bit0 is marked as 0, the fault is confirmed immediately; when bit0 is marked as 1, it means that the diagnosis needs to be confirmed after several operation cycles after the fault is confirmed, for example, the diagnosis needs to be confirmed after 3 operation cycles; when the fault is detected to occur, the fault diagnosis action is carried out according to the mode defined by bit 0;
s202, bit1 of the fault management state information is used for selecting a fault repairing mode; when bit1 is marked as 0, the fault can be repaired immediately after the fault is eliminated; when bit1 is marked as 1, the fault is repaired after a plurality of operation cycles or accumulated fault-free operation for a specified time after the fault is eliminated; for example, after 3 cycles of operation; when the fault is detected to be repaired, performing fault repairing action according to a fault repairing mode defined by bit 1;
s203, bit3 and 2 bits of the fault management state information are used for selecting a fault alarm mode when a fault occurs; when the bit3 and the bit2 are marked as 00, the fault is not alarmed after diagnosis is confirmed; when the bit3 and bit2 are marked as 01, the fault is indicated to be alarmed by using a fault lamp after diagnosis is confirmed; when the bit3 and bit2 are marked as 10, the fault is indicated to be alarmed by using a buzzer after diagnosis is confirmed; when the bit3 and bit2 are marked as 11, the fault is indicated to be alarmed by using a fault lamp and a buzzer at the same time after diagnosis is confirmed; when the confirmed diagnosis of the fault is detected, corresponding fault alarm action is carried out according to the mode defined by bit3 and bit 2;
s204, using bits bit6, bit5 and bit4 of the fault management state information to select the fault storage priority; when the confirmed fault diagnosis is detected, storing fault information and deleting the fault information according to the storage priority of each fault; specifically, a certain number of fault information storage positions are preset, for example, 20 fault information storage positions are preset, and when all fault information storage positions are full, fault information with a lower storage priority is deleted and then fault information which needs to be stored currently is stored;
s205, bit7 of the fault management state information is used for selecting a fault information deleting condition; when bit7 is marked as 0, the fault information indicating the fault can be deleted immediately after the fault is repaired; when bit7 is marked as 1, fault information indicating the fault needs to be deleted when the engine runs for a period of time without fault after fault repair; when the fault is detected to be diagnosed, corresponding fault information is stored, and after the fault is repaired, fault information deleting operation is carried out according to the fault information deleting condition of the bit7 bit identification;
s206, using bits bit10, bit9 and bit8 of the fault management state information to select a fault processing mode; when bit10, bit9 and bit8 are marked as 000, the processing mode after the fault occurs is only alarming and not processing; when bit10, bit9 and bit8 are marked as 001, the processing mode after the fault occurs is an emergency shutdown mode; when bit10, bit9 and bit8 are marked as 010, the processing mode after the fault occurs is a slow shutdown mode 1; when bit10, bit9 and bit8 are marked as 011, the processing mode after the fault occurs is a slow shutdown mode 2; when bit10, bit9 and bit8 are marked as 100, the processing mode after the fault occurs is a limp home mode 1; when bit10, bit9 and bit8 are marked as 101, the processing mode after the fault occurs is a limp home mode 2; when bit10, bit9 and bit8 are marked as 110, the processing mode after the fault occurs is a limp home mode 3; when the confirmed diagnosis of the fault is detected, selecting a fault processing mode according to bit10, bit9 and bit8 bit identifiers;
s207, bit12 and bit11 bits of the fault management state information are used for selecting fault processing exit conditions; when bits 12 and 11 are marked as 00, the fault processing is quitted when the position 0 of the fault certainty mark is detected; when bits 12 and bit11 are marked as 01, the fault processing is quitted when the current cycle fault confirmation mark position 0 is detected; when bit12, bit11 are marked as 10, indicating that the fault processing is quitted when the fault diagnosis mark position 0 after the circulation is detected; when bit12, bit11 are marked as 11, indicating that the fault processing is exited when a diagnostic fault flag bit or the current cycle fault confirmation flag position 0 is detected; when the fault is detected to be repaired, the fault processing is quitted according to the conditions met by bit12 and bit11 bit identifications;
step S3, when some fault occurs, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S4, the fault is confirmed after passing through the corresponding fault confirmation mode, and the corresponding fault alarm mode is selected, and the fault information is stored according to the fault storage priority; after the fault is diagnosed, setting the corresponding fault flag bit;
step S5, after the fault flag bit is set, a corresponding fault processing mode is obtained according to the fault management state information corresponding to the fault;
step S6, if there are several faults happening at the same time, comparing all fault processing modes, selecting the fault processing mode with higher priority to process the fault;
step S7, when a fault is repaired, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S8, the fault is repaired after passing through the corresponding fault repairing mode, and the fault information is deleted according to the fault storage priority;
in step S9, the failure processing is exited after the failure satisfies the corresponding failure processing exit condition.
In a second aspect, an embodiment of the present invention further provides a fault management device for an electric control system of an off-road diesel engine, including:
a memory storing a computer program;
a processor for executing the computer program, the computer program when executed performing the steps of the method as described above;
the Processor may be a CPU, or other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like, or a combination of the foregoing chips or circuits; the memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (7)
1. A fault management method for an electric control system of a non-road diesel engine is characterized by comprising the following steps:
step S1, configuring the component type and the corresponding fault type of the system according to the requirement;
step S2, defining corresponding fault management state information for each fault type according to the configured component type and the fault type corresponding to each component type;
step S3, when some fault occurs, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S4, the fault is confirmed after passing through the corresponding fault confirmation mode, and the corresponding fault alarm mode is selected, and the fault information is stored according to the fault storage priority; after the fault is diagnosed, setting the corresponding fault flag bit;
step S5, after the fault flag bit is set, a corresponding fault processing mode is obtained according to the fault management state information corresponding to the fault;
step S6, if there are several faults happening at the same time, comparing all fault processing modes, selecting the fault processing mode with higher priority to process the fault;
step S7, when a fault is repaired, configuring the fault management mode of the fault according to the corresponding fault management state information;
step S8, the fault is repaired after passing through the corresponding fault repairing mode, and the fault information is deleted according to the fault storage priority;
in step S9, the failure processing is exited after the failure satisfies the corresponding failure processing exit condition.
2. The fault management method for an off-road diesel engine electric control system according to claim 1,
the fault management status information includes the following functional items: a fault diagnosis mode, a fault repair mode, a fault alarm mode, a fault storage priority, a fault information deletion condition, a fault processing mode and a fault processing exit condition; and are defined by a plurality of bits, respectively.
3. The fault management method for an off-road diesel engine electric control system according to claim 2,
the first bit of the fault management state information is used for selecting a fault diagnosis method; the failure diagnosis method comprises immediate diagnosis of the failure and diagnosis after several operation cycles after the failure is confirmed; when the fault is detected to occur, the fault diagnosis action is carried out according to the mode defined by the first bit section;
the second section bit of the fault management state information is used for selecting a fault repairing mode; the fault repairing mode comprises that the fault can be repaired immediately after the fault is removed, and the fault needs to be repaired after a plurality of operation cycles or accumulated fault-free operation for a specified time after the fault is removed; when the fault is detected to be repaired, performing fault repairing action according to a fault repairing mode defined by the second bit section;
the third bit of the fault management state information is used for selecting a fault alarm mode when a fault occurs; the fault alarm mode comprises that the fault does not alarm after the diagnosis is confirmed, the fault alarms by using a fault lamp after the diagnosis is confirmed, the fault alarms by using a buzzer after the diagnosis is confirmed, and the fault alarms by using the fault lamp and the buzzer simultaneously after the diagnosis is confirmed; when the confirmed diagnosis of the fault is detected, corresponding fault alarm action is carried out according to the mode defined by the third section of bit;
the fourth bit of the fault management state information is used for selecting the fault storage priority; when the confirmed fault diagnosis is detected, storing fault information and deleting the fault information according to the storage priority of each fault;
the fifth bit of the fault management state information is used for selecting a fault information deleting condition; the fault information deleting condition comprises that the fault information of the fault can be deleted immediately after the fault is repaired, and the fault information of the fault needs to be deleted when the engine runs for a period of time without the fault after the fault is repaired; after the fault is repaired, carrying out fault information deleting operation according to the fault information deleting condition of the fifth bit identification;
the sixth bit of the fault management state information is used for selecting a fault processing mode; when the confirmed diagnosis of the fault is detected, selecting a fault processing mode according to the sixth bit identifier;
the seventh bit of the fault management state information is used for selecting a fault processing exit condition; and when the fault is detected to be repaired, quitting the fault processing according to the condition met by the seventh bit identification.
4. The fault management method for an off-road diesel engine electric control system according to claim 3,
after the confirmed diagnosis of the fault is detected, the storage of the fault information and the deletion of the fault information are performed according to the storage priority of each fault, which specifically comprises the following steps: a certain number of fault information storage positions are preset, and when all the fault information storage positions are full, the fault information with lower storage priority is deleted firstly, and then the fault information which needs to be stored currently is stored.
5. The fault management method for an off-road diesel engine electric control system according to claim 3,
the fault processing mode comprises the following steps: the processing mode after the occurrence of the fault is only an alarm but not a processing mode, the processing mode after the occurrence of the fault is an emergency stop mode, the processing mode after the occurrence of the fault is a certain slow stop mode, and the processing mode after the occurrence of the fault is a certain limp home mode.
6. The fault management method for an off-road diesel engine electric control system according to claim 3,
the failure handling exit condition includes: the failure process is exited upon detection of the fault confirmed flag position 0, upon detection of the current cycle fault confirmed flag position 0, upon detection of the cycle past fault confirmed flag position 0, upon detection of the confirmed fault flag position or the current cycle fault confirmed flag position 0.
7. A fault management device for an off-road diesel engine electronic control system, comprising:
a memory storing a computer program;
a processor for running the computer program, the computer program when running performing the steps of the method of any one of claims 1 to 6.
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