CN110823577A - Vehicle PCV system fault monitoring method and system, vehicle and storage medium - Google Patents
Vehicle PCV system fault monitoring method and system, vehicle and storage medium Download PDFInfo
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- CN110823577A CN110823577A CN201910974427.4A CN201910974427A CN110823577A CN 110823577 A CN110823577 A CN 110823577A CN 201910974427 A CN201910974427 A CN 201910974427A CN 110823577 A CN110823577 A CN 110823577A
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Abstract
The invention discloses a vehicle PCV system fault monitoring method, a vehicle and a storage medium, and belongs to the technical field of PCV system monitoring. The method comprises the following steps: s1, obtaining the idle speed of the engine system and generating an idle speed data set; s2, determining a rotating speed deviation value according to the idle rotating speed data set, wherein the rotating speed deviation value is the difference value of the idle rotating speeds at two adjacent moments or the difference value of the idle rotating speed at the current moment and the normal idle rotating speed; s3, judging whether the rotating speed deviation value meets a first preset condition, if so, executing a step S4, and if not, executing a step S1; s4, generating a fault code, wherein the fault code is used for indicating that a PCV system pipeline has a fault; and S5, acquiring the fault code, and displaying fault information according to the fault code. The method is simple and convenient to operate, other parts do not need to be added, the efficiency of monitoring the pipeline fault of the PCV system is improved, and the period and the cost of development of an engine system and a whole vehicle are reduced.
Description
Technical Field
The invention relates to the technical field of vehicle crankcase ventilation (PCV) system monitoring, in particular to a vehicle PCV system fault monitoring method, a vehicle and a storage medium.
Background
The PCV system is used to completely ventilate the crankcase of a gasoline engine, prevent the accumulation of oil sludge and other harmful substances, reduce engine failure and wear, and meet emissions regulations.
In the prior art, a method for monitoring whether a PCV system leaks is as follows: a detection conductor is arranged on the crankcase ventilation pipeline and is connected to an on-board computer of an automobile to form a detection circuit. And indicating the connection state of the crankcase ventilation pipe by using the connection and disconnection between the detection conductor and the communication lead. Illustratively, the detection circuit is a pass-through circuit under normal conditions of crankcase ventilation duct connection; when any position of the crankcase ventilation pipe leaks, the detection circuit is disconnected.
It can be seen that in the prior art, when the PVC system is monitored to be leaked, other parts need to be arranged on a ventilation pipeline of a crankcase, so that the monitoring process is complex.
Disclosure of Invention
The invention aims to provide a vehicle PCV system fault monitoring method, a vehicle PCV system fault monitoring system, a vehicle and a storage medium, which improve the efficiency of monitoring PCV system pipeline faults and reduce the cycle and the cost of engine system and whole vehicle development.
As the conception, the technical scheme adopted by the invention is as follows:
a vehicle PCV system fault monitoring method comprises the following steps:
s1, obtaining the idle speed of the engine system and generating an idle speed data set;
s2, determining a rotating speed deviation value according to the idle rotating speed data set, wherein the rotating speed deviation value is the difference value of idle rotating speeds at two adjacent moments or the difference value of the idle rotating speed at the current moment and the normal idle rotating speed;
s3, judging whether the rotating speed deviation value meets a first preset condition, if so, executing a step S4, and if not, executing a step S1;
s4, generating the fault code, wherein the fault code is used for indicating that a PCV system pipeline has a fault;
and S5, acquiring the fault code, and displaying fault information according to the fault code.
Preferably, the rotation speed deviation value is a difference between an idle rotation speed at a first time and an idle rotation speed at a second time, the rotation speed deviation value is a positive value or zero, the first preset condition is that the rotation speed deviation value is greater than a preset rotation speed deviation value, and step S3 includes:
and S31, judging whether the rotating speed deviation value is larger than a preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
Preferably, the rotation speed deviation value is a difference between the idle rotation speed at the first time and the idle rotation speed at the second time, the rotation speed deviation value is a negative value, the first preset condition is that the rotation speed deviation value is greater than a preset rotation speed deviation value, and step S3 includes:
s32, taking an absolute value of the rotating speed deviation value to obtain an absolute rotating speed deviation value;
and S33, judging whether the absolute rotating speed deviation value is larger than a preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
Preferably, the rotation speed deviation value is a difference between the idle rotation speed at the current time and the normal idle rotation speed, the first preset condition includes that an integrated value of a plurality of rotation speed deviations is greater than a preset rotation speed deviation integrated value, and the step S3 includes:
s34, calculating the sum of the multiple rotating speed deviation values to obtain a rotating speed deviation accumulated value;
and S35, judging whether the rotating speed deviation accumulated value is larger than a preset rotating speed deviation accumulated value, if so, executing a step S4, and if not, executing a step S1.
Preferably, the rotation speed deviation value includes a positive deviation value and a negative deviation value, the positive deviation value is a difference between the idle rotation speed at the current time and the normal idle rotation speed when the idle rotation speed at the current time is higher than the normal idle rotation speed, the negative deviation value is a difference between the idle rotation speed at the current time and the normal idle rotation speed when the idle rotation speed at the current time is lower than the normal idle rotation speed, and the preset rotation speed deviation integrated value includes a positive preset deviation integrated value and a negative preset deviation integrated value, step S34 includes:
s341, calculating the sum of a plurality of positive deviation values to obtain a positive deviation accumulated value;
s342, calculating the sum of the negative deviation values to obtain a negative deviation accumulated value;
step S35 includes:
s351, determining whether the positive deviation cumulative value is greater than a positive preset deviation cumulative value, and determining whether the negative deviation cumulative value is greater than a negative preset deviation cumulative value, if the positive deviation cumulative value is greater than the positive preset deviation cumulative value and the negative deviation cumulative value is greater than the negative preset deviation cumulative value, executing step S4, otherwise executing step S1.
A vehicle PCV system fault monitoring system comprising:
the first acquisition module is used for acquiring the idle speed of the engine system in real time and generating an idle speed data set;
the determining module is used for determining a rotating speed deviation value at two adjacent acquisition moments according to the idle rotating speed data set;
the judging module is used for judging whether the rotating speed deviation value meets a first preset condition or not;
a generation module that generates the fault code, wherein the fault code is indicative of a fault in a PCV system conduit;
and the second acquisition module is used for acquiring the fault code and displaying fault information according to the fault code.
Preferably, the judging module includes:
the calculating unit is used for calculating the accumulated value of the plurality of rotating speed deviation values to obtain a rotating speed deviation accumulated value;
and the judging unit is used for judging whether the rotating speed deviation accumulated value is larger than a preset rotating speed deviation accumulated value or not.
Preferably, the calculation unit includes:
the first calculating subunit is used for calculating the sum of the plurality of positive deviation values to obtain a positive deviation accumulated value;
the second calculating subunit is used for calculating the sum of the negative deviations to obtain a negative deviation accumulated value;
the judging unit includes:
and the judging subunit is used for judging whether the positive deviation accumulated value is larger than a positive preset deviation accumulated value or not and judging whether the negative deviation accumulated value is larger than a negative preset deviation accumulated value or not.
A vehicle, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the vehicle PCV system failure monitoring method described above.
A storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the vehicle PCV system failure monitoring method described above.
According to the vehicle PCV system fault monitoring method, the vehicle PCV system fault monitoring system, the vehicle and the storage medium, the fluctuation condition of the idle speed is determined by acquiring the idle speed data of the engine system, and then whether the PCV system pipeline has the fault is determined according to the fluctuation condition.
Drawings
FIG. 1 is a flowchart illustrating a vehicle PCV system failure monitoring method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vehicle PCV system failure monitoring system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vehicle according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
Example one
FIG. 1 is a flowchart of a vehicle PCV system failure monitoring method according to an embodiment of the present invention, which is applicable to a failure monitoring situation of a PCV system pipeline, and can be used for monitoring whether a PCV system pipeline has a disconnection failure. The method can be executed by a vehicle PCV system fault monitoring system which can be realized by software and/or hardware and is integrated in a vehicle, and concretely, the vehicle PCV system fault monitoring method comprises the following steps:
and S1, acquiring the idle speed of the engine system and generating an idle speed data set.
The idle rotation speed is the rotation speed of the engine system when the driver does not step on the accelerator pedal and has no torque request of other controllers after the vehicle is started. Alternatively, the idle speed of the engine system may be collected by an On Board Diagnostics (OBD) system. Idle speed data in the OBD system is then obtained by a controller in the engine control system. In addition, the controller can acquire the idle speed in real time and can also acquire the idle speed periodically. The idle speed data set has idle speeds of the engine system corresponding to different acquisition moments.
And S2, determining a rotating speed deviation value according to the idle rotating speed data set, wherein the rotating speed deviation value is the difference value of the idle rotating speeds at two adjacent moments or the difference value of the idle rotating speed at the current moment and the normal idle rotating speed.
Illustratively, the idle speed at the current moment is 1300 rpm, the idle speed at the moment before the current moment is 800 rpm, the normal idle speed of the engine system is 1000 rpm, and when the deviation value of the idle speed is the difference value of the idle speeds at two adjacent moments, the deviation value of the idle speed is 500; and when the rotating speed deviation value is the difference value between the idling rotating speed at the current moment and the normal idling rotating speed, the rotating speed deviation value is 300 revolutions per minute. Therefore, the rotation speed deviation value in the embodiment can reflect the fluctuation (or jitter) condition of the rotation speed of the engine system, and can monitor the fault condition of the PCV system pipeline according to the fluctuation condition.
S3, judging whether the rotating speed deviation value meets a first preset condition, if so, executing a step S4, and if not, executing a step S1.
The first predetermined condition may have various conditions, such as a deviation value of the rotation speed is greater than a predetermined deviation value of the rotation speed, or a sum of the deviation values of the rotation speed is greater than a sum of the deviation values of the rotation speed. When the deviation value of the rotating speed meets the first preset condition, the fluctuation of the idle rotating speed of the engine system is considered to be large, and then the fluctuation of the idle rotating speed of the engine system caused by the PCV system is considered to be large, so that the pipeline of the PCV system can be judged to have a fault.
And S4, generating a fault code, wherein the fault code is used for indicating that the PCV system pipeline has a fault.
When the rotational speed deviation value satisfies a first preset condition, a controller of the engine control system may generate a fault code indicating that there is an obstruction in the PCV system piping and store the fault code in the engine control system.
And S5, acquiring the fault code, and displaying fault information according to the fault code.
The diagnostic instrument can be used for acquiring a fault code in an engine control system, and fault information of PCV fault is displayed on a display screen or an instrument panel of the vehicle according to the fault code. The fault information may be a text message or a red light being lit.
In summary, according to the method for monitoring a fault of a vehicle PCV system provided by the embodiment, the fluctuation condition of the idle speed can be determined by acquiring the idle speed data of the engine system, and then whether the pipeline of the PCV system has a fault or not can be determined by the fluctuation condition.
Optionally, the content of step S3 is different according to the first preset condition or the difference of the rotation speed deviation value, and specifically, the present embodiment describes step S3 in several cases as follows.
In the first case, when the rotation speed deviation value in this embodiment is a difference value between the idle rotation speed at the first time and the idle rotation speed at the second time, and the rotation speed deviation value is a positive value or zero, and the first preset condition is that the rotation speed deviation value is greater than the preset rotation speed deviation value, at this time, the step S3 may include:
and S31, judging whether the rotating speed deviation value is larger than a preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
The first time and the second time are two adjacent times, and the first time may be a time after the second time. And, the preset rotation speed deviation value may be determined according to the model or performance of the engine system, etc.
In the second case, when the rotation speed deviation value is a difference between the idle rotation speed at the first time and the idle rotation speed at the second time, and the rotation speed deviation value is a negative value, the first preset condition is that the rotation speed deviation value is greater than the preset rotation speed deviation value, at this time, step S3 may further include:
and S32, taking an absolute value of the rotating speed deviation value to obtain an absolute rotating speed deviation value.
And S33, judging whether the absolute rotating speed deviation value is larger than a preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
When the rotating speed deviation value is a negative value, for convenience of calculation and comparison, the negative rotating speed deviation value can be converted into a positive rotating speed deviation value, and then the positive rotating speed deviation value is compared with a preset rotating speed deviation value to determine whether a pipeline of the PCV system is in fault.
In a third case, the rotation speed deviation value is a difference value between the idle rotation speed at the current time and the normal idle rotation speed, the first preset condition includes that an integrated value of the plurality of rotation speed deviations is greater than a preset rotation speed deviation integrated value, and at this time, step S3 includes:
and S34, calculating the sum of the plurality of rotation speed deviation values to obtain a rotation speed deviation accumulated value.
And S35, judging whether the rotating speed deviation accumulated value is larger than a preset rotating speed deviation accumulated value, if so, executing a step S4, and if not, executing a step S1.
Further, the rotation speed deviation value includes a positive deviation value and a negative deviation value, the positive deviation value is a difference value between the idle rotation speed at the current moment and the normal idle rotation speed when the idle rotation speed at the current moment is higher than the normal idle rotation speed, the negative deviation value is a difference value between the idle rotation speed at the current moment and the normal idle rotation speed when the idle rotation speed at the current moment is lower than the normal idle rotation speed, the preset rotation speed deviation integrated value includes a positive preset deviation integrated value and a negative preset deviation integrated value, and the step S34 includes:
and S341, calculating the sum of the plurality of positive deviation values to obtain a positive deviation accumulated value.
And S342, calculating the sum of the negative deviation values to obtain a negative deviation accumulated value.
Step S35 includes:
s35, determining whether the positive deviation cumulative value is greater than the positive predetermined deviation cumulative value, and determining whether the negative deviation cumulative value is greater than the negative predetermined deviation cumulative value, if the positive deviation cumulative value is greater than the positive predetermined deviation cumulative value and the negative deviation cumulative value is greater than the negative predetermined deviation cumulative value, executing step S4, otherwise executing step S1.
The three conditions can reflect the fluctuation condition of the idle speed of the engine system, so as to determine whether the pipeline of the PCV system is in failure according to the fluctuation.
Example two
The present embodiment provides a vehicle PCV system failure monitoring system, as shown in FIG. 2, comprising:
the first obtaining module 21 is configured to obtain an idle speed of an engine system in real time and generate an idle speed data set;
the determining module 22 is configured to determine a rotational speed deviation value at two adjacent acquisition moments according to the idle rotational speed data set;
the judging module 23 is configured to judge whether the rotation speed deviation value meets a first preset condition;
a generation module 24 that generates a fault code, wherein the fault code is used to indicate a fault in a PCV system line;
and the second obtaining module 25 is configured to obtain the fault code, and display fault information according to the fault code.
Wherein, the judging module includes:
the calculating unit is used for calculating the accumulated value of the plurality of rotating speed deviation values to obtain a rotating speed deviation accumulated value;
and the judging unit is used for judging whether the rotating speed deviation accumulated value is larger than a preset rotating speed deviation accumulated value or not.
Optionally, the computing unit includes:
the first calculating subunit is used for calculating the sum of the plurality of positive deviation values to obtain a positive deviation accumulated value;
and the second calculating subunit is used for calculating the sum of the negative deviations to obtain a negative deviation accumulated value.
Correspondingly, the judging unit includes:
and the judging subunit is used for judging whether the positive deviation accumulated value is larger than the positive preset deviation accumulated value or not and judging whether the negative deviation accumulated value is larger than the negative preset deviation accumulated value or not.
The vehicle PCV system fault monitoring system provided by the second embodiment of the invention can be used for executing the vehicle PCV system fault monitoring method provided by the above embodiment, and has corresponding functions and beneficial effects.
EXAMPLE III
Fig. 3 is a schematic structural diagram of the vehicle in the present embodiment. FIG. 3 illustrates a block diagram of an exemplary vehicle 312 used to implement embodiments of the present invention. The vehicle 312 shown in fig. 3 is only an example, and should not bring any limitations to the function and scope of use of the embodiments of the present invention.
As shown in fig. 3, the vehicle 312 is represented in the form of a general-purpose terminal. The components of the vehicle 312 may include, but are not limited to: a vehicle body (not shown), one or more processors 316, a memory device 328, and a bus 318 connecting the various system components, including the memory device 328 and the processors 316.
The vehicle 312 includes a variety of computer system readable media. Such media may be any available media that is accessible by vehicle 312 and includes both volatile and nonvolatile media, removable and non-removable media.
A program/utility 340 having a set (at least one) of program modules 342 may be stored, for example, in storage 328, such program modules 342 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 342 generally perform the functions and/or methodologies of the described embodiments of the invention.
The vehicle 312 may also communicate with one or more external devices 314 (e.g., keyboard, pointing terminal, display 324, etc.), with one or more terminals that enable a user to interact with the vehicle 312, and/or with any terminals (e.g., network card, modem, etc.) that enable the vehicle 312 to communicate with one or more other computing terminals. Such communication may occur via input/output (I/O) interfaces 322. Also, the vehicle 312 may communicate with one or more networks (e.g., a Local Area Network (LAN), Wide Area Network (WAN), and/or a public Network, such as the internet) via the Network adapter 320. As shown in FIG. 3, the network adapter 320 communicates with the other modules of the vehicle 312 via the bus 318. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the vehicle 312, including but not limited to: microcode, end drives, Redundant processors, external disk drive Arrays, RAID (Redundant Arrays of Independent Disks) systems, tape drives, and data backup storage systems, among others.
Example four
The present embodiment provides a storage medium, in particular a computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements a vehicle PCV system failure monitoring method as provided by embodiments of the present invention.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A vehicle PCV system fault monitoring method is characterized by comprising the following steps:
s1, obtaining the idle speed of the engine system and generating an idle speed data set;
s2, determining a rotating speed deviation value according to the idle rotating speed data set, wherein the rotating speed deviation value is the difference value of idle rotating speeds at two adjacent moments or the difference value of the idle rotating speed at the current moment and the normal idle rotating speed;
s3, judging whether the rotating speed deviation value meets a first preset condition, if so, executing a step S4, and if not, executing a step S1;
s4, generating a fault code, wherein the fault code is used for indicating that a PCV system pipeline has a fault;
and S5, acquiring the fault code, and displaying fault information according to the fault code.
2. The vehicle PCV system malfunction monitoring method according to claim 1, wherein the rotation speed deviation value is a positive value or zero, the first preset condition is that the rotation speed deviation value is greater than a preset rotation speed deviation value, and step S3 includes:
and S31, judging whether the rotating speed deviation value is larger than the preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
3. The vehicle PCV system malfunction monitoring method according to claim 2, wherein the rotation speed deviation value is a negative value, the first preset condition is that the rotation speed deviation value is greater than a preset rotation speed deviation value, and step S3 includes:
s32, taking an absolute value of the rotating speed deviation value to obtain an absolute rotating speed deviation value;
and S33, judging whether the absolute rotating speed deviation value is larger than the preset rotating speed deviation value, if so, executing a step S4, and if not, executing a step S1.
4. The vehicle PCV system malfunction monitoring method according to claim 1, wherein the rotation speed deviation value is a difference between the idle rotation speed at the current time and the normal idle rotation speed, the first preset condition includes that an integrated value of a plurality of rotation speed deviation values is greater than a preset rotation speed deviation integrated value, and step S3 includes:
s34, calculating the sum of the plurality of rotating speed deviation values to obtain a rotating speed deviation accumulated value;
and S35, judging whether the rotating speed deviation accumulated value is larger than the preset rotating speed deviation accumulated value, if so, executing a step S4, and if not, executing a step S1.
5. The vehicle PCV system failure monitoring method according to claim 4, wherein the rotational speed offset value comprises a positive offset value and a negative offset value; the positive deviation value is the difference value between the idle speed at the current moment and the normal idle speed when the idle speed at the current moment is higher than the normal idle speed; the negative deviation value is the difference value between the idle speed at the current moment and the normal idle speed when the idle speed at the current moment is lower than the normal idle speed; the preset rotational speed deviation integrated value includes a positive preset deviation integrated value and a negative preset deviation integrated value, and step S34 includes:
s341, calculating the sum of the plurality of positive deviation values to obtain a positive deviation accumulated value;
s342, calculating the sum of the negative deviation values to obtain a negative deviation accumulated value;
step S35 includes:
s351, determining whether the positive deviation cumulative value is greater than the positive preset deviation cumulative value, and determining whether the negative deviation cumulative value is greater than the negative preset deviation cumulative value, if the positive deviation cumulative value is greater than the positive preset deviation cumulative value and the negative deviation cumulative value is greater than the negative preset deviation cumulative value, executing step S4, otherwise executing step S1.
6. A vehicle PCV system fault monitoring system, comprising:
the first acquisition module is used for acquiring the idle speed of the engine system in real time and generating an idle speed data set;
the determining module is used for determining a rotating speed deviation value at two adjacent acquisition moments according to the idle rotating speed data set;
the judging module is used for judging whether the rotating speed deviation value meets a first preset condition or not;
the system comprises a generating module, a judging module and a judging module, wherein the generating module is used for generating a fault code, and the fault code is used for indicating that a PCV system pipeline has a fault;
and the second acquisition module is used for acquiring the fault code and displaying fault information according to the fault code.
7. The vehicle PCV system failure monitoring system according to claim 6, wherein the determining module comprises:
the calculating unit is used for calculating the accumulated value of the plurality of rotating speed deviation values to obtain a rotating speed deviation accumulated value;
and the judging unit is used for judging whether the rotating speed deviation accumulated value is larger than a preset rotating speed deviation accumulated value or not.
8. The vehicle PCV system failure monitoring system according to claim 7, wherein the computing unit comprises:
the first calculating subunit is used for calculating the sum of the plurality of positive deviation values to obtain a positive deviation accumulated value;
the second calculating subunit is used for calculating the sum of the negative deviation values to obtain a negative deviation cumulative value;
the judging unit includes:
and the judging subunit is used for judging whether the positive deviation accumulated value is larger than a positive preset deviation accumulated value or not and judging whether the negative deviation accumulated value is larger than a negative preset deviation accumulated value or not.
9. A vehicle, characterized by comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the vehicle PCV system failure monitoring method according to any one of claims 1 to 5.
10. A storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements a vehicle PCV system failure monitoring method according to any one of claims 1 to 5.
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| CN114486264A (en) * | 2022-02-11 | 2022-05-13 | 中国第一汽车股份有限公司 | Method, system, storage medium and electronic device for controlling engine load |
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