CN111721538A - Engine detection method and device - Google Patents
Engine detection method and device Download PDFInfo
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- CN111721538A CN111721538A CN202010605280.4A CN202010605280A CN111721538A CN 111721538 A CN111721538 A CN 111721538A CN 202010605280 A CN202010605280 A CN 202010605280A CN 111721538 A CN111721538 A CN 111721538A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
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Abstract
The invention discloses an engine detection method and device. Wherein, the method comprises the following steps: acquiring the accelerator opening of an engine in a preset time period; determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; and determining the detection result of the engine according to the performance attenuation index. The invention solves the technical problem of poor accuracy in determining the performance of the engine mainly depending on the running time of the engine or the running distance of the whole vehicle in the related technology.
Description
Technical Field
The invention relates to the field of engine detection, in particular to an engine detection method and device.
Background
The maintenance of the engine is an indispensable expense for users every year, the traditional maintenance strategy mainly depends on the running time of the engine or the running distance of the whole vehicle, the different running conditions of the vehicle are not considered in the maintenance mode, unnecessary expenses are caused to the customers by the early maintenance, and the damage to the engine is caused to different degrees by the late maintenance. Namely, the time for reducing the performance of the engine to the time required for maintenance is determined according to the running time of the engine or the running distance of the whole vehicle, and the problem of poor accuracy exists.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an engine detection method and device, which at least solve the technical problem that the performance and accuracy of an engine are determined mainly by the running time of the engine or the running distance of a whole vehicle in the related technology.
According to an aspect of an embodiment of the present invention, there is provided an engine detection method including: acquiring the accelerator opening of an engine in a preset time period; determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; and determining the detection result of the engine according to the performance attenuation index.
Optionally, the obtaining the throttle opening of the engine comprises: receiving single-day operating data for the engine; and under the condition that the engine has no torque-limiting fault, determining the opening degree of the accelerator according to the single-day operation data.
Optionally, before determining the performance attenuation index of the engine according to the accelerator opening and a preset reference accelerator opening, the method includes: acquiring normal operation data of the engine within a preset time period, wherein the normal operation data is operation data of the engine in a normal state without torque-limiting faults; and determining the opening degree of the reference accelerator according to the normal operation data.
Optionally, the accelerator opening is determined according to the single-day operation data, and the mode of determining the reference accelerator opening is consistent with the mode of determining the reference accelerator opening according to the normal operation data.
Optionally, determining the attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening includes: and taking the ratio of the difference between the reference accelerator opening and the accelerator opening to the reference accelerator opening as the attenuation index.
Optionally, determining the detection result of the engine according to the performance decay index includes: summarizing attenuation indexes of a plurality of accelerator opening degrees; and determining that the engine has a risk when the attenuation index exceeds the number ratio of the accelerator opening degrees of a preset attenuation threshold and exceeds a preset number threshold.
Optionally, after determining that the engine is at risk, the method further comprises: sending prompt information that the engine has risks; and/or controlling an alarm device to give an alarm.
According to another aspect of the embodiments of the present invention, there is also provided an engine detection apparatus, including: the acquisition module is used for acquiring the accelerator opening of the engine in a preset time period; the determining module is used for determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; and the detection module is used for determining the detection result of the engine according to the performance decay index.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the engine detection method according to any one of the above.
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, wherein the program is run to perform the engine detection method of any one of the above.
In the embodiment of the invention, the accelerator opening of the engine in a preset time period is acquired; determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; the method for determining the detection result of the engine according to the performance attenuation index achieves the aim of accurately determining the performance of the engine according to the accelerator opening of the engine by determining the performance attenuation index of the accelerator opening from the accelerator opening obtained in the preset time period and the reference accelerator opening and determining the performance of the engine according to the performance attenuation index, thereby achieving the technical effect of improving the accuracy of determining the performance of the engine, and further solving the technical problem that the accuracy is poor when the performance of the engine is determined mainly by the running time of the engine or the running distance of the whole vehicle in the related technology.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of engine detection according to an embodiment of the present invention;
FIG. 2 is a flow chart of an engine detection method according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a reference accelerator opening map according to an embodiment of the invention;
FIG. 4 is a schematic diagram of an engine detection apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a method embodiment of an engine detection method, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
FIG. 1 is a flow chart of a method of engine detection according to an embodiment of the present invention, as shown in FIG. 1, including the steps of:
step S102, acquiring the accelerator opening of the engine in a preset time period;
step S104, determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening;
and step S106, determining the detection result of the engine according to the performance attenuation index.
Through the steps, receiving an access request of the database, wherein the access request comprises account information and requested service information; determining an account database corresponding to the account information according to the access request, wherein the account databases are physically isolated from each other; according to the service information of the access request, a corresponding service database is determined from the account database, the service database is accessed to respond to the access request, wherein the account database comprises a plurality of logically isolated service databases, the service database corresponding to the service information of the access request is determined from the plurality of logically isolated service databases in the account database in a manner of determining the account database corresponding to the account information of the access request from the physically isolated account databases, and the service database corresponding to the service information of the access request is determined from the plurality of logically isolated service databases in the account database, so that the aim of preventing mutual interference among the service databases is fulfilled, the technical effect of improving the data safety of the databases is achieved, and the technical problems that the performance of an engine is determined mainly depending on the running time of the engine or the running distance of the whole vehicle and the accuracy is poor in the related technology are solved.
The preset time period may be a single day, that is, the accelerator opening degree in the day is acquired in units of days, and the accelerator opening degree of the engine running in the day is detected to determine whether the performance of the engine running in the day is low enough to require maintenance. The preset time period can also be hours or other preset time as a unit, and the accelerator opening data of the engine in the unit time is acquired so as to detect the performance of the engine.
The accelerator opening may be an average value, or may be an accelerator opening map in the preset time period, and the accelerator opening map includes a plurality of accelerator openings at a plurality of engine speeds and a plurality of starting torques, where only one accelerator opening is provided at one starting torque and one engine speed. The method has the advantages that the throttle opening within the preset time period is counted in the form of a map, and the overall level of the throttle opening can be determined visually, conveniently and quickly.
Optionally, the obtaining the throttle opening of the engine comprises: receiving single-day operating data of the engine; and under the condition that the torque-limiting fault does not exist in the engine, determining the opening degree of the accelerator according to the single-day operation data.
The reference accelerator opening may be a specific numerical value or a reference accelerator opening map, and the reference accelerator opening may be a preset value, may be input by a user, or may be a reference accelerator opening determined according to previous history data.
Specifically, before determining a performance decay index of the engine according to the accelerator opening and a preset reference accelerator opening, the method includes: acquiring normal operation data of the engine within a preset time period, wherein the normal operation data is operation data of the engine in a normal state without torque-limiting faults; and determining the reference accelerator opening according to the normal operation data.
Therefore, the reference accelerator opening map is determined according to the engine data in a normal state, the accuracy of the reference accelerator opening map is guaranteed, and the accuracy of engine monitoring is improved.
Optionally, the accelerator opening is determined according to the single-day operation data, and the mode of determining the reference accelerator opening is consistent with the mode of determining the reference accelerator opening according to the normal operation data.
And generating a map according to the acquired accelerator opening data of the engine in a preset time period, wherein the statistical value of the accelerator opening map is required to be consistent with the statistical mode of the accelerator opening of the reference accelerator opening map. The map includes a plurality of engine torques and engine speeds, and the range and data division of the map may cause a change in the map, so that the determination of the accelerator opening degree based on the single-day operation data is performed in accordance with the determination of the reference accelerator opening degree based on the normal operation data, and the range and data division of the engine torques and the engine speeds may be the same for the map of the accelerator opening degree and the map of the reference accelerator opening degree. Different statistical accuracies can be caused by different numerical ranges and data division of the engine torque and the engine speed, and the processing and the comparison of the accelerator opening map and the reference accelerator opening map at the later stage can be facilitated through the mode.
Optionally, determining the attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening includes: and taking the ratio of the difference between the reference accelerator opening and the accelerator opening to the reference accelerator opening as an attenuation index.
Specifically, when the accelerator opening is the accelerator opening map and the reference accelerator opening is the reference accelerator opening map, a difference obtained by subtracting the accelerator opening map for a single day from the reference accelerator opening map is divided by the reference accelerator opening map to obtain an attenuation index map of the accelerator opening map for a single day with respect to the reference accelerator opening map. One accelerator opening corresponds to one reference accelerator opening, that is, the attenuation index may also be the attenuation index map.
Optionally, determining the detection result of the engine according to the performance decay index includes: summarizing attenuation indexes of a plurality of accelerator opening degrees; and determining that the engine has risk under the condition that the attenuation index exceeds the number ratio of the accelerator opening degrees of the preset attenuation threshold value and exceeds the preset number threshold value.
Specifically, in the present embodiment, when the duty ratio of the attenuation degree exceeding 15% exceeds 50, it is determined that the engine is at risk.
Optionally, after determining that the engine is at risk, the method further comprises: sending prompt information that the engine has risks; and/or controlling an alarm device to give an alarm.
It should be noted that this embodiment also provides an alternative implementation, which is described in detail below.
The embodiment provides an intelligent maintenance strategy depending on the output power of the engine, the attenuation condition of the performance of the engine is determined by comparing the opening degree information of the accelerator under the same working condition, and the maintenance time of the engine is further determined.
The embodiment provides a maintenance time determination strategy and system based on single-variable degradation of the accelerator opening of an engine. The system consists of a vehicle networking cloud server, vehicle-mounted terminal equipment and an online monitoring system platform. The vehicle-mounted terminal equipment is used for collecting engine data and transmitting the engine data back to the cloud server of the Internet of vehicles in real time, the cloud server is used for analyzing the performance degradation condition of the engine throttle on a single day and displaying the analysis result on line through the cloud platform, so that the engine performance monitoring is realized, performance state information can be pushed to a driver, and the driver is recommended to maintain the engine.
FIG. 2 is a flow chart of an engine detection method according to an embodiment of the present invention, as shown in FIG. 2, which is described in detail below for the steps of the method:
acquiring an initial reference map of the accelerator opening degree: collecting a large amount of effective data of the engine in a normal working state within 1000h of normal running of the engine, and taking the effective data as basic data of an initial reference map; a three-dimensional matrix model of the engine rotating speed, the torque and the accelerator opening is obtained by counting and calculating the accelerator opening statistical values in all working condition areas, and the accelerator opening value can be an average value of the accelerator opening and can also be other statistical values. Fig. 3 is a schematic diagram of a reference accelerator opening map according to an embodiment of the present invention, the accelerator opening map being as shown in fig. 3.
Single-day engine accelerator opening map: and abnormal data caused by external factors are removed, and when no torque-limiting fault exists, the accelerator opening data acquired on a single day are counted to form an accelerator opening map, so that the statistical value of the accelerator opening is consistent with the statistical mode of the accelerator opening of the initial reference map.
Attenuation map acquisition: the difference of the single-day map subtracted from the reference map is divided by the reference map to obtain an attenuation map of the single-day map with respect to the reference map.
And summarizing the attenuation degrees of all the regions in the attenuation map, counting the distribution of the attenuation degrees, and sending out a prompt when the proportion of the attenuation degrees exceeding 15% of the working condition regions exceeds 50. Reminding the driver to carry out maintenance as soon as possible.
According to the invention, historical operating data acquired by the engine is utilized, and a data analysis result is visually displayed based on the Internet of vehicles platform, so that the requirement of monitoring the performance attenuation of the throttle opening degree in any date of a user is met. Meanwhile, the invention also has the following advantages:
1) the map has high precision and good adaptivity. The historical data pool is updated in real time through the acquired accelerator opening data in the normal running state of the engine, and the acquired initial reference map of the accelerator opening is counted, so that the method can adapt to various working conditions of the engine and has good representative significance of the working conditions;
2) has the advantage of real-time visualization. Based on the Internet of vehicles platform, the throttle opening degree degradation evaluation result of the current day can be displayed in real time;
3) the portability is good. When a certain model is transplanted to other models, the data pool is only required to be updated to the collected data of other models.
And the expandability is strong. The method is not limited to the on-line monitoring of the opening performance of the engine accelerator, and can be also suitable for monitoring other performances only by updating the data of the data pool.
1. The implementation mode is based on the advanced Internet of things technology, communication is carried out by combining the application of the engine terminal equipment, and real-time return of the engine operation data can be realized;
2. the engine operation data real-time returning and storage of the embodiment are realized based on the terminal and the cloud server, the data storage capacity of the engine operation data real-time returning and storage is far greater than that of a real-time controller, and higher-order data can be stored;
3. the computing power of the cloud server is far higher than that of a real-time controller, and more complex data processing work can be borne;
4. and the calculation result of the cloud server is uploaded to the Internet of vehicles platform, the degradation trend of the opening performance of the engine accelerator is visualized, and an alarm is given in real time, so that the online monitoring of the degradation condition of the engine performance is realized.
In the embodiment, the computer can be arranged on the whole vehicle/whole machine and used for storing and processing all data acquired during the operation of the whole vehicle/whole machine, and data storage and data processing are not required to be carried out after the data are transmitted back to the cloud server by using the terminal equipment.
Fig. 4 is a schematic diagram of an engine detection apparatus according to an embodiment of the present invention, and as shown in fig. 4, according to another aspect of the embodiment of the present invention, there is also provided an engine detection apparatus including: an acquisition module 42, a determination module 44, and a detection module 46, which are described in detail below.
The acquiring module 42 is used for acquiring the accelerator opening of the engine in a preset time period; a determining module 44, connected to the obtaining module 42, for determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; and a detection module 46, coupled to the determination module 44, for determining a detection result of the engine based on the performance degradation index.
By the device, the accelerator opening of the engine in a preset time period is acquired by the acquisition module 42; the determining module 44 determines a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening; the detection module 46 determines the detection result of the engine according to the performance attenuation index, and determines the performance attenuation index of the accelerator opening by comparing the accelerator opening acquired in the preset time period with the reference accelerator opening and determines the performance of the engine according to the performance attenuation index, so that the purpose of accurately determining the performance of the engine according to the accelerator opening of the engine is achieved, the technical effect of improving the accuracy of determining the performance of the engine is achieved, and the technical problem that the accuracy of determining the performance of the engine is poor mainly depending on the running time of the engine or the running distance of the whole vehicle in the related art is solved.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program is executed, the apparatus on which the storage medium is controlled performs the engine detection method of any one of the above.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program executes to perform the engine detection method of any one of the above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An engine detection method, comprising:
acquiring the accelerator opening of an engine in a preset time period;
determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening;
and determining the detection result of the engine according to the performance attenuation index.
2. The method of claim 1, wherein obtaining an engine throttle opening comprises:
receiving single-day operating data for the engine;
and under the condition that the engine has no torque-limiting fault, determining the opening degree of the accelerator according to the single-day operation data.
3. The method of claim 2, wherein prior to determining the performance decay index of the engine based on the throttle opening and a preset reference throttle opening, comprises:
acquiring normal operation data of the engine within a preset time period, wherein the normal operation data is operation data of the engine in a normal state without torque-limiting faults;
and determining the opening degree of the reference accelerator according to the normal operation data.
4. The method of claim 3, wherein the throttle opening is determined from the single day operational data in a manner consistent with determining the baseline throttle opening from the normal operational data.
5. The method of claim 1, wherein determining a decay index for the throttle opening of the engine based on the throttle opening and a preset reference throttle opening comprises:
and taking the ratio of the difference between the reference accelerator opening and the accelerator opening to the reference accelerator opening as the attenuation index.
6. The method of claim 5, wherein determining the engine test result from the performance decay index comprises:
summarizing attenuation indexes of a plurality of accelerator opening degrees;
and determining that the engine has a risk when the attenuation index exceeds the number ratio of the accelerator opening degrees of a preset attenuation threshold and exceeds a preset number threshold.
7. The method of claim 6, after determining that the engine is at risk, further comprising:
sending prompt information that the engine has risks;
and/or controlling an alarm device to give an alarm.
8. An engine detection device, comprising:
the acquisition module is used for acquiring the accelerator opening of the engine in a preset time period;
the determining module is used for determining a performance attenuation index of the accelerator opening of the engine according to the accelerator opening and a preset reference accelerator opening;
and the detection module is used for determining the detection result of the engine according to the performance decay index.
9. A storage medium comprising a stored program, wherein the apparatus in which the storage medium is located is controlled to execute the engine detection method according to any one of claims 1 to 7 when the program is executed.
10. A processor for running a program, wherein the program when running executes the engine detection method of any one of claims 1 to 7.
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| CN202010605280.4A CN111721538A (en) | 2020-06-29 | 2020-06-29 | Engine detection method and device |
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| CN202010605280.4A CN111721538A (en) | 2020-06-29 | 2020-06-29 | Engine detection method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113787962A (en) * | 2021-09-16 | 2021-12-14 | 东风汽车集团股份有限公司 | Sound production control method and system of active sound wave device |
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Application publication date: 20200929 |