CN112053039B - Engine oil dilution risk assessment method, device, equipment and storage medium - Google Patents
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- 239000010705 motor oil Substances 0.000 title claims abstract description 290
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- 239000000446 fuel Substances 0.000 claims description 9
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Abstract
The invention discloses an engine oil dilution risk assessment method, device and equipment and a storage medium, and belongs to the technical field of engines. The invention obtains the engine type of the engine to be tested; determining a corresponding test strategy according to the engine type; performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil; according to the engine oil dilution degree corresponding to the sample engine oil, an engine oil dilution risk assessment result of the engine to be tested is obtained, dilution tests are carried out on the original engine oil based on different testing strategies corresponding to different engine types, and a plurality of different sample engine oils after the tests are obtained, so that the problems of low engine oil dilution detection precision and high cost are solved, the accuracy of engine oil dilution risk assessment is improved, the engine oil dilution tests are carried out in the engine, no additional detection equipment is needed, and the assessment cost is reduced.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine oil dilution risk assessment method, an engine oil dilution risk assessment device, engine oil dilution risk assessment equipment and a storage medium.
Background
Dilution of engine oil is an abnormal behavior of an engine, which causes a decrease in viscosity of engine oil, thereby affecting lubrication performance of engine oil and service life of engine oil, and even possibly causing a risk of cylinder pulling.
At present, a chromatographic method and a spot method are often adopted for detecting engine oil dilution, wherein the chromatographic method needs a gas chromatograph, and the gas chromatograph is high in price and cannot be born by common enterprises; the spot method has the problem of lower detection accuracy.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an engine oil dilution risk assessment method, device, equipment and storage medium, and aims to solve the technical problems of lower engine oil dilution detection accuracy and higher cost in the prior art.
To achieve the above object, the present invention provides a method for evaluating risk of dilution of engine oil, comprising the steps of:
obtaining the type of an engine to be tested, wherein the engine to be tested is added with original engine oil;
Determining a corresponding test strategy according to the engine type;
performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil;
And obtaining an engine oil dilution risk assessment result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil.
Optionally, the engine type includes: a direct injection gasoline engine;
The determining a corresponding test strategy according to the engine type comprises:
searching a working condition testing strategy corresponding to the direct injection gasoline engine from a pre-constructed mapping relation;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
Obtaining target test parameters corresponding to the working condition test strategy;
And performing engine oil dilution test on the original engine oil in the direct injection engine according to the target test parameters to obtain sample engine oil.
Optionally, the direct injection gasoline engine comprises a primary injection gasoline engine and a secondary injection gasoline engine;
the obtaining the target test parameters corresponding to the working condition test strategy comprises the following steps:
When the direct injection gasoline engine is a primary injection gasoline engine, acquiring a first calibration parameter of a first working condition corresponding to the primary injection gasoline engine, and taking the first calibration parameter as a target test parameter corresponding to the working condition test strategy;
And when the direct injection gasoline engine is a secondary injection gasoline engine, acquiring a second calibration parameter of a second working condition corresponding to the secondary injection gasoline engine, and taking the second calibration parameter as a target test parameter corresponding to the working condition test strategy.
Optionally, the performing an engine oil dilution test on the original engine oil in the direct injection engine according to the target test parameter, to obtain a sample engine oil includes:
Determining environmental parameters and rated engine parameters according to the target test parameters;
Setting corresponding test working conditions based on the environmental parameters and the rated engine parameters;
The rotating speed value and the load value of the direct injection gasoline engine are adjusted according to a preset test period under the test working condition;
And performing an engine oil dilution test on the original engine oil in the direct injection engine according to the rotating speed value and the load value to obtain sample engine oil.
Optionally, the engine type includes: a post-injection diesel engine;
The determining a corresponding test strategy according to the engine type comprises:
Searching a regeneration test strategy corresponding to the post-injection diesel engine from a pre-constructed mapping relation;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
Adjusting the inlet temperature of an oxidation catalyst in the post-injection diesel engine according to the regeneration test strategy so that a diesel particulate filter of the post-injection diesel engine performs dilution test on the original engine oil through working condition circulation between a carbon accumulating working condition and a regeneration working condition;
And when the preset cycle times are reached, acquiring sample engine oil in the post-injection diesel engine.
Optionally, the test strategy further comprises a whole vehicle test strategy;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
acquiring performance parameters of a target vehicle according to the whole vehicle testing strategy, wherein the target vehicle is provided with the engine to be tested;
judging whether the target vehicle is in a full-load state according to the performance parameters;
Acquiring the road environment temperature when the target vehicle is in a full-load state;
When the road environment temperature accords with a preset test condition, controlling the target vehicle to run under a preset road working condition;
And acquiring the driving distance of the target vehicle under the preset road working condition, and extracting sample engine oil from an engine to be tested, which is arranged on the target vehicle, when the driving distance reaches the preset distance.
Optionally, the obtaining the engine oil dilution risk assessment result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil includes:
Acquiring the mounting position of an oil injector of the engine to be tested;
determining a dilution evaluation threshold according to the installation position of the fuel injector;
comparing the oil dilution corresponding to the sample oil with the dilution evaluation threshold;
and evaluating the sample engine oil according to the comparison result to obtain an engine oil dilution risk evaluation result of the engine to be tested.
In addition, in order to achieve the above object, the present invention also proposes an engine oil dilution risk assessment device, the device comprising:
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the engine type of an engine to be tested, wherein the engine to be tested is added with original engine oil;
the searching module is used for determining a corresponding testing strategy according to the engine type;
the testing module is used for carrying out engine oil dilution testing on the original engine oil in the engine to be tested according to the testing strategy to obtain sample engine oil;
And the evaluation module is used for obtaining an engine oil dilution risk evaluation result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil.
In addition, in order to achieve the above object, the present invention also proposes an engine oil dilution risk assessment apparatus including: a memory, a processor, and an engine oil dilution risk assessment program stored on the memory and executable on the processor, the engine oil dilution risk assessment program configured to implement the steps of the engine oil dilution risk assessment method as described above.
In addition, to achieve the above object, the present invention also proposes a storage medium having stored thereon an engine oil dilution risk assessment program which, when executed by a processor, implements the steps of the engine oil dilution risk assessment method as described above.
The invention obtains the engine type of the engine to be tested; determining a corresponding test strategy according to the engine type; performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil; according to the engine oil dilution degree corresponding to the sample engine oil, an engine oil dilution risk assessment result of the engine to be tested is obtained, dilution tests are conducted on the original engine oil based on different testing strategies corresponding to different engine types, a plurality of tested engine oils with different samples are obtained, accuracy of engine oil dilution risk assessment is improved, engine oil dilution tests are conducted in the engine, additional detection equipment is not needed, and assessment cost is reduced.
Drawings
FIG. 1 is a schematic diagram of an engine oil dilution risk assessment apparatus for a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart of a first embodiment of an engine oil dilution risk assessment method according to the present invention;
FIG. 3 is a flowchart of a second embodiment of an engine oil dilution risk assessment method according to the present invention;
FIG. 4 is a flowchart of a third embodiment of an engine oil dilution risk assessment method according to the present invention;
fig. 5 is a block diagram showing the construction of a first embodiment of the engine oil dilution risk assessment apparatus of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an engine oil dilution risk assessment device in a hardware operation environment according to an embodiment of the present invention.
As shown in fig. 1, the engine oil dilution risk assessment apparatus may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., a wireless FIdelity (WI-FI) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the configuration shown in FIG. 1 does not constitute a limitation of the engine oil dilution risk assessment apparatus, and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and an engine oil dilution risk assessment program may be included in the memory 1005 as one type of storage medium.
In the engine oil dilution risk assessment apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the engine oil dilution risk assessment device of the present invention may be provided in the engine oil dilution risk assessment device, where the engine oil dilution risk assessment device calls the engine oil dilution risk assessment program stored in the memory 1005 through the processor 1001, and executes the engine oil dilution risk assessment method provided by the embodiment of the present invention.
The embodiment of the invention provides an engine oil dilution risk assessment method, and referring to fig. 2, fig. 2 is a flow chart of a first embodiment of an engine oil dilution risk assessment method according to the invention.
In this embodiment, the engine oil dilution risk assessment method includes the following steps:
step S10: and obtaining the engine type of the engine to be tested, wherein the engine to be tested is added with the original engine oil.
It should be noted that, the execution body of the embodiment may be an engine oil detection device, which is configured to obtain engine data to be tested, including engine operation parameters, performance indexes, and the like, and also be configured to collect original engine oil in an engine to be tested and sample engine oil in the engine to be tested after the test is completed, and obtain engine oil information of the sample engine oil, and perform engine oil dilution risk assessment according to the engine oil information.
In this embodiment, the types of engines corresponding to different classification modes are different, and the classification is performed according to the power source, and the types of engines include a diesel engine, a gasoline engine, an electric automobile motor, a hybrid electric motor, and the like; the engine types comprise a natural air suction engine, a turbo-charged engine, a mechanical supercharged engine, a double-supercharged engine and the like; classification is based on the manner of piston movement, and engine types include reciprocating piston internal combustion engines and rotary piston engines; the engine types include V-type engines, W-type engines, horizontally opposed engines, etc., classified according to the cylinder arrangement pattern; the engine types include single-cylinder engines and multi-cylinder engines; classifying according to cooling modes, wherein the engine type comprises a water-cooled engine and an air-cooled engine; classifying according to the stroke number, wherein the engine type comprises a four-stroke internal combustion engine and a two-stroke internal combustion engine; the engine types include carburetor engines, electronic injection engines, and direct injection engines in cylinders, and in the present embodiment, the engine types are classified into manifold injection gasoline engines, direct injection gasoline engines, diesel engines without post injection strategy, and diesel engines with post injection strategy in the specific evaluation process.
It is easy to understand that the engine to be tested is filled with the original engine oil, the original engine oil in different types of engines to be tested is the same engine oil standard, and the original engine oil is engine oil which is not used in factory leaving.
Step S20: and determining a corresponding test strategy according to the engine type.
It should be noted that, in this embodiment, in order to improve the accuracy of engine oil dilution risk assessment, different test strategies are formulated for different types of engines, where the test strategies include a bench test strategy and a whole vehicle test strategy, the bench test strategy is to set test parameters to test the engine alone, the bench test strategy includes a working condition test strategy and a regeneration test strategy, and the whole vehicle test strategy is to set the engine on the whole vehicle for road test. In this embodiment, all types of engines need to execute a whole vehicle test strategy, and the bench test strategy needs to be set correspondingly according to the engine type, for example, the bench test strategy corresponding to the direct injection gasoline engine is a working condition test strategy, and the bench test strategy corresponding to the engine with the post injection strategy is a regeneration test strategy.
Step S30: and performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil.
It will be readily appreciated that after determining the test strategy, engine operation is controlled according to the test strategy, and dilution of the engine oil is typically caused by mixing of coolant or fuel into the engine oil during operation of the engine, so that after a period of engine operation, detection of sample engine oil in the engine may be used to assess the risk of engine oil dilution.
In a specific implementation, once sample engine oil is collected after one test is completed, for example, once sample engine oil is collected when the whole vehicle runs to 3000 km, engine oil detection equipment extracts engine oil from an oil level gauge when the sample engine oil is collected, and the engine oil at the lower part of the engine oil level is taken.
Step S40: and obtaining an engine oil dilution risk assessment result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil.
In this embodiment, the engine oil dilution risk of the engine to be tested may be evaluated according to the obtained oil dilution of the sample engine oil, the sample engine oil dilution is compared with the dilution threshold, and if the sample engine oil dilution exceeds the dilution threshold, it is indicated that the sample engine oil dilution is large, and the engine oil dilution risk of the engine to be tested exists.
The method comprises the steps of obtaining the type of an engine to be tested; determining a corresponding test strategy according to the engine type; performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil; according to the engine oil dilution degree corresponding to the sample engine oil, an engine oil dilution risk assessment result of the engine to be tested is obtained, dilution tests are conducted on the original engine oil based on different testing strategies corresponding to different engine types, a plurality of tested engine oils with different samples are obtained, accuracy of engine oil dilution risk assessment is improved, engine oil dilution tests are conducted in the engine, additional detection equipment is not needed, and assessment cost is reduced.
Referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of an engine oil dilution risk assessment method according to the present invention.
Based on the first embodiment, the step S20 specifically includes:
step S201: and searching a working condition testing strategy corresponding to the direct injection gasoline engine from a pre-constructed mapping relation.
In this embodiment, the pre-built mapping relationship includes a corresponding relationship between an engine type and a test strategy, where in this embodiment, the engine type includes a direct injection gasoline engine, and a working condition test strategy corresponding to the direct injection gasoline engine may be searched from the pre-built mapping relationship, where the working condition test strategy includes a characteristic working condition test strategy and a comprehensive cycle working condition test strategy. In addition, it should be noted that in this embodiment, the characteristic working condition testing policy is executed first, and then the comprehensive cycle working condition testing policy is executed.
Further, the step S30 specifically includes:
Step S301: and obtaining target test parameters corresponding to the working condition test strategy.
It is easy to understand that the test modes and the test standards of the different working condition test strategies are different, so that the target test parameters corresponding to the working condition test strategies need to be obtained, and the target test parameters are calibration parameters corresponding to the working condition test strategies.
In a specific implementation, the step S301 includes: when the direct injection gasoline engine is a primary injection gasoline engine, acquiring a first calibration parameter of a first working condition corresponding to the primary injection gasoline engine, and taking the first calibration parameter as a target test parameter corresponding to the working condition test strategy; and when the direct injection gasoline engine is a secondary injection gasoline engine, acquiring a second calibration parameter of a second working condition corresponding to the secondary injection gasoline engine, and taking the second calibration parameter as a target test parameter corresponding to the working condition test strategy.
In this embodiment, the direct injection gasoline engine is divided into a primary injection gasoline engine and a secondary injection gasoline engine, and the target test parameters corresponding to the different injection gasoline engines are different, as shown in table 1.
TABLE 1 characteristic operating mode test strategy
In this embodiment, taking table 1 as an example for illustration, the first working conditions corresponding to the primary injection gasoline engine include working condition 1, working condition 2 and working condition 3, the second working conditions corresponding to the secondary injection gasoline engine are working condition 1, working condition 2 and working condition 4, the first calibration parameters are rotation speeds, loads, test time, excess air coefficient, water temperature and the like corresponding to the working conditions 1,2 and3, and the second calibration parameters are rotation speeds, loads, test time, excess air coefficient, water temperature and the like corresponding to the working conditions 1,2 and 4. The target test parameter of the primary direct injection gasoline engine is a first calibration parameter, and the target test parameter of the secondary direct injection gasoline engine is a second calibration parameter.
Step S302: and performing engine oil dilution test on the original engine oil in the direct injection engine according to the target test parameters to obtain sample engine oil.
It is easy to understand that after the target test parameters are obtained, corresponding parameter setting is carried out on the direct injection gasoline engine according to the target test parameters, the direct injection gasoline engine is controlled to run until the engine is stopped according to the set parameters, and the sample engine oil can be obtained from the direct injection gasoline engine after the engine is stopped.
In a specific implementation, the step S302 includes: determining environmental parameters and rated engine parameters according to the target test parameters; setting corresponding test working conditions based on the environmental parameters and the rated engine parameters; the rotating speed value and the load value of the direct injection gasoline engine are adjusted according to a preset test period under the test working condition; and performing an engine oil dilution test on the original engine oil in the direct injection engine according to the rotating speed value and the load value to obtain sample engine oil.
It should be noted that, in this embodiment, the engine oil is tested according to the comprehensive circulation condition measurement strategy, the environmental parameter and the rated parameter of the engine may be determined according to the target parameter, where the environmental parameter includes an excess air coefficient, a water temperature, and the like, the rated parameter of the engine includes an engine speed, an engine load, and the like, the excess condition, the maximum torque condition, and the rated condition are set based on the environmental parameter and the rated parameter of the engine, and the speed value and the load value of the direct injection gasoline engine are adjusted according to the preset period, as shown in table 2.
Table 2 comprehensive cycle condition testing strategy
Furthermore, in an embodiment, the engine type further includes a post-injection diesel engine, and the step S20 further includes: and searching a regeneration test strategy corresponding to the post-injection diesel engine from a pre-constructed mapping relation.
Further, the step S30 further includes: adjusting the inlet temperature of an oxidation catalyst in the post-injection diesel engine according to the regeneration test strategy so that a diesel particulate filter of the post-injection diesel engine performs dilution test on the original engine oil through working condition circulation between a carbon accumulating working condition and a regeneration working condition; and when the preset cycle times are reached, acquiring sample engine oil in the post-injection diesel engine.
It should be noted that, the inlet temperature of the oxidation catalyst in the post-injection diesel engine corresponds to the working condition of the diesel particulate filter in the post-injection diesel engine, so the diesel particulate filter can be in the cycle of the carbon accumulating working condition and the regeneration working condition by adjusting the inlet temperature of the oxidation catalyst, as shown in table 3.
Table 3 regeneration test strategy
It should be noted that, the DTI working condition in table 3 represents a test process of rapidly reducing the working condition of the diesel engine To Idle (DTI for short), that is, the post-injection diesel engine is in a stop Idle state after working condition circulation, and it can be known from table 3 that 200±10 ℃ and 300±10 ℃ are catalytic oxidizer inlet temperatures, 200±10 ℃ corresponds To a carbon accumulating working condition, 300±10 ℃ corresponds To a regeneration working condition, the carbon accumulating working condition continuously operates, the differential pressure of the diesel particulate filter gradually increases, and the carbon loading of the direct diesel particulate filter reaches a loading level; when the carbon loading of the diesel particulate filter reaches the loading level, automatically entering a regeneration working condition; and after the carbon accumulation and regeneration working conditions circulate for 10 times, entering an idle working condition, and ending one large cycle. The preset cycle number can be set to 10 times or can be set according to actual conditions, the cycle number of the working condition is represented when the preset cycle number is reached, the post-injection diesel engine is represented to finish testing, and engine oil obtained from the post-injection diesel engine at the moment is sample engine oil.
According to the engine oil dilution risk assessment method and device, the test strategies corresponding to different engine types are searched through the pre-built mapping relation, the environment parameters and the rated engine parameters are set according to the target test parameters corresponding to the different test strategies, and the test working conditions are set according to the environment parameters and the rated engine parameters, so that engine oil dilution tests can be carried out on different types of engines more specifically, and the accuracy of engine oil dilution risk assessment is improved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of an engine oil dilution risk assessment method according to the present invention.
Based on the first embodiment, the step S30 further includes:
Step S301': and acquiring performance parameters of a target vehicle according to the whole vehicle testing strategy, wherein the target vehicle is provided with the engine to be tested.
In this embodiment, the whole vehicle test strategy is to set the engine to be tested on the whole vehicle for running, and the test strategy further includes a whole vehicle test strategy, and according to the test strategy, performance parameters of the target vehicle are obtained, where the performance parameters include vehicle body quality, load quality, size, wheelbase, and the like.
Step S302': and judging whether the target vehicle is in a full-load state according to the performance parameters.
It should be noted that, whether the target vehicle is in a full load state can be judged according to parameters such as the vehicle body quality and the load quality in the performance parameters, and the running load of the engine can be increased to the maximum extent only under the condition that the vehicle is in the full load, so that the engine oil dilution evaluation result is more reliable.
Step S303': and when the target vehicle is in a full-load state, acquiring the road environment temperature.
When the target vehicle is in a full-load state, the road environment temperature of the driving road is detected, the whole vehicle testing strategy comprises a normal-temperature road test and a cold-zone road test, engine oil dilution conditions are different at different temperatures, and the normal-temperature road test or the cold-zone road test is determined through the obtained road environment.
Step S304': and when the road environment temperature accords with a preset test condition, controlling the target vehicle to run under a preset road working condition.
It is easy to understand that the road environment temperature is compared with preset test conditions, the preset test conditions include a road environment temperature threshold, whether the target vehicle is subjected to normal-temperature road test or cold-zone road test can be judged by comparison, the preset road conditions corresponding to different road environment temperatures are different, and the preset road conditions can be flat asphalt roads, curved mountain roads and the like.
Step S305': and acquiring the driving distance of the target vehicle under the preset road working condition, and extracting sample engine oil from an engine to be tested, which is arranged on the target vehicle, when the driving distance reaches the preset distance.
It should be noted that, the target vehicle cannot collect engine oil in the engine during the driving process, and the target vehicle needs to stop driving, so a preset distance needs to be set, when the driving distance of the target vehicle reaches the preset distance, the target vehicle stops driving, and sample engine oil is extracted from the engine to be tested on the target vehicle, the preset distance set by the gasoline engine is different from the preset distance set by the diesel engine, and the preset distance can be understood as the sampling distance of the sample engine oil, for example, the sampling distance of the gasoline engine is when the target vehicle reaches equal distances of 3000km, 5000km and 8000km, and the sampling distance of the diesel engine is when the target vehicle reaches equal distances of 10000km, 20000km and 30000 km.
Further, the step S40 includes:
step S401: and acquiring the installation position of the fuel injector of the engine to be tested.
It should be noted that, in this implementation, the dilution degree of the engine oil corresponding to the sample engine oil is compared with a dilution degree evaluation threshold value, so as to evaluate the dilution risk of the engine oil of the engine to be tested, where the dilution degree evaluation threshold value is related to the installation position of the injector, and the installation position of the injector includes a side injector and an overhead injector.
Step S402: and determining a dilution evaluation threshold according to the installation position of the fuel injector.
In this embodiment, the dilution evaluation threshold values for the engines passing the bench test are different, for example, the dilution evaluation threshold value for the side injector corresponding to the working condition 1 in table 1 is 6%, and the dilution evaluation threshold value for the top injector is 5%.
Step S403: and comparing the engine oil dilution corresponding to the sample engine oil with the dilution evaluation threshold value.
In a specific implementation, after the oil dilution corresponding to the sample oil is obtained, the oil dilution corresponding to the sample oil is compared in magnitude with a dilution evaluation threshold.
Step S404: and evaluating the sample engine oil according to the comparison result to obtain an engine oil dilution risk evaluation result of the engine to be tested.
It should be noted that, if the dilution of the sample engine oil is greater than or equal to the dilution evaluation threshold, the engine oil dilution risk of the engine to be tested is determined, and if the dilution of the sample engine oil is less than the dilution evaluation threshold, the engine oil dilution risk of the engine to be tested is determined not to be present.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium is stored with an engine oil dilution risk assessment program, and the engine oil dilution risk assessment program realizes the steps of the engine oil dilution risk assessment method when being executed by a processor.
Referring to fig. 5, fig. 5 is a block diagram showing the structure of a first embodiment of the engine oil dilution risk assessment apparatus of the present invention.
As shown in fig. 5, an engine oil dilution risk assessment device according to an embodiment of the present invention includes:
The obtaining module 10 is configured to obtain an engine type of an engine to be tested, where the engine to be tested is added with original engine oil.
It should be noted that, the engine oil dilution risk assessment device is used for acquiring engine data to be tested, including engine operation parameters, performance indexes, and the like, and is also used for acquiring original engine oil in the engine to be tested and sample engine oil in the engine to be tested after the test is completed, acquiring engine oil information of the sample engine oil, and performing engine oil dilution risk assessment according to the engine oil information.
In this embodiment, the types of engines corresponding to different classification modes are different, and the classification is performed according to the power source, and the types of engines include a diesel engine, a gasoline engine, an electric automobile motor, a hybrid electric motor, and the like; the engine types comprise a natural air suction engine, a turbo-charged engine, a mechanical supercharged engine, a double-supercharged engine and the like; classification is based on the manner of piston movement, and engine types include reciprocating piston internal combustion engines and rotary piston engines; the engine types include V-type engines, W-type engines, horizontally opposed engines, etc., classified according to the cylinder arrangement pattern; the engine types include single-cylinder engines and multi-cylinder engines; classifying according to cooling modes, wherein the engine type comprises a water-cooled engine and an air-cooled engine; classifying according to the stroke number, wherein the engine type comprises a four-stroke internal combustion engine and a two-stroke internal combustion engine; engine types include carburetor engines and electronic injection engines, as well as direct injection engines in cylinders, which are classified according to the fuel supply mode.
A search module 20 for determining a corresponding test strategy based on the engine type.
It should be noted that, in this embodiment, in order to improve the accuracy of engine oil dilution risk assessment, different test strategies are formulated for different types of engines, where the test strategies include a bench test strategy and a whole vehicle test strategy, the bench test strategy is to set test parameters to test the engine alone, the bench test strategy includes a working condition test strategy and a regeneration test strategy, and the whole vehicle test strategy is to set the engine on the whole vehicle for road test. In this embodiment, all types of engines need to execute a whole vehicle test strategy, and the bench test strategy needs to be set correspondingly according to the engine type, for example, the bench test strategy corresponding to the direct injection gasoline engine is a working condition test strategy, and the bench test strategy corresponding to the engine with the post injection strategy is a regeneration test strategy.
And the testing module 30 is configured to perform an engine oil dilution test on the original engine oil in the engine to be tested according to the testing strategy to obtain a sample engine oil.
It will be readily appreciated that after determining the test strategy, engine operation is controlled according to the test strategy, and dilution of the engine oil is typically caused by mixing of coolant or fuel into the engine oil during operation of the engine, so that after a period of engine operation, detection of sample engine oil in the engine may be used to assess the risk of engine oil dilution.
In a specific implementation, once sample engine oil is collected after one test is completed, for example, once sample engine oil is collected when the whole vehicle runs to 3000 km, engine oil detection equipment extracts engine oil from an oil level gauge when the sample engine oil is collected, and the engine oil at the lower part of the engine oil level is taken.
And the evaluation module 40 is used for obtaining an engine oil dilution risk evaluation result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil.
In this embodiment, the engine oil dilution risk of the engine to be tested may be evaluated according to the obtained oil dilution of the sample engine oil, the sample engine oil dilution is compared with the dilution threshold, and if the sample engine oil dilution exceeds the dilution threshold, it is indicated that the sample engine oil dilution is large, and the engine oil dilution risk of the engine to be tested exists.
The method comprises the steps of obtaining the type of an engine to be tested; determining a corresponding test strategy according to the engine type; performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil; according to the engine oil dilution degree corresponding to the sample engine oil, an engine oil dilution risk assessment result of the engine to be tested is obtained, dilution tests are conducted on the original engine oil based on different testing strategies corresponding to different engine types, a plurality of tested engine oils with different samples are obtained, accuracy of engine oil dilution risk assessment is improved, engine oil dilution tests are conducted in the engine, additional detection equipment is not needed, and assessment cost is reduced.
In an embodiment, the searching module 20 is further configured to search a working condition testing policy corresponding to the direct injection gasoline engine from a pre-constructed mapping relationship; the test module 30 is further configured to obtain a target test parameter corresponding to the working condition test policy; and performing engine oil dilution test on the original engine oil in the direct injection engine according to the target test parameters to obtain sample engine oil.
In an embodiment, the test module 30 is further configured to, when the direct injection gasoline engine is a once injection gasoline engine, obtain a first calibration parameter of a first working condition corresponding to the once injection gasoline engine, and use the first calibration parameter as a target test parameter corresponding to the working condition test policy; and when the direct injection gasoline engine is a secondary injection gasoline engine, acquiring a second calibration parameter of a second working condition corresponding to the secondary injection gasoline engine, and taking the second calibration parameter as a target test parameter corresponding to the working condition test strategy.
In one embodiment, the test module 30 is further configured to determine an environmental parameter and an engine rating parameter based on the target test parameter; setting corresponding test working conditions based on the environmental parameters and the rated engine parameters; the rotating speed value and the load value of the direct injection gasoline engine are adjusted according to a preset test period under the test working condition; and performing an engine oil dilution test on the original engine oil in the direct injection engine according to the rotating speed value and the load value to obtain sample engine oil.
In an embodiment, the searching module 20 is further configured to search a pre-constructed mapping relationship for a regeneration test strategy corresponding to the post-injection diesel engine; the test module 30 is further configured to adjust an inlet temperature of an oxidation catalyst in the post-injection diesel engine according to the regeneration test strategy, so that a diesel particulate filter of the post-injection diesel engine performs a dilution test on the original engine oil through a working condition cycle between a carbon accumulating working condition and a regeneration working condition; and when the preset cycle times are reached, acquiring sample engine oil in the post-injection diesel engine.
In an embodiment, the test module 30 is further configured to determine whether the target vehicle is in a full load state according to the performance parameter; acquiring the road environment temperature when the target vehicle is in a full-load state; when the road environment temperature accords with a preset test condition, controlling the target vehicle to run under a preset road working condition; and acquiring the driving distance of the target vehicle under the preset road working condition, and extracting sample engine oil from an engine to be tested, which is arranged on the target vehicle, when the driving distance reaches the preset distance.
In an embodiment, the evaluation module 40 is further configured to obtain a fuel injector mounting position of the engine to be tested; determining a dilution evaluation threshold according to the installation position of the fuel injector; comparing the oil dilution corresponding to the sample oil with the dilution evaluation threshold; and evaluating the sample engine oil according to the comparison result to obtain an engine oil dilution risk evaluation result of the engine to be tested.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in this embodiment may refer to the engine oil dilution risk assessment method provided in any embodiment of the present invention, and are not described herein.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (7)
1. A method of engine oil dilution risk assessment, the engine oil dilution risk assessment comprising:
obtaining the type of an engine to be tested, wherein the engine to be tested is added with original engine oil;
Determining a corresponding test strategy according to the engine type;
performing oil dilution test on the original engine oil in the engine to be tested according to the test strategy to obtain sample engine oil;
Obtaining an engine oil dilution risk assessment result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil;
the test strategy further comprises a whole vehicle test strategy;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
acquiring performance parameters of a target vehicle according to the whole vehicle testing strategy, wherein the target vehicle is provided with the engine to be tested;
judging whether the target vehicle is in a full-load state according to the performance parameters;
Acquiring the road environment temperature when the target vehicle is in a full-load state;
When the road environment temperature accords with a preset test condition, controlling the target vehicle to run under a preset road working condition;
acquiring the driving distance of the target vehicle under the preset road working condition, and extracting sample engine oil from an engine to be tested, which is arranged on the target vehicle, when the driving distance reaches the preset distance;
wherein the engine type includes: a direct injection gasoline engine;
The determining a corresponding test strategy according to the engine type comprises:
searching a working condition testing strategy corresponding to the direct injection gasoline engine from a pre-constructed mapping relation;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
Obtaining target test parameters corresponding to the working condition test strategy;
Performing engine oil dilution test on the original engine oil in the direct injection engine according to the target test parameters to obtain sample engine oil;
wherein the engine type includes: a post-injection diesel engine;
The determining a corresponding test strategy according to the engine type comprises:
Searching a regeneration test strategy corresponding to the post-injection diesel engine from a pre-constructed mapping relation;
Performing an engine oil dilution test on the original engine oil in the engine to be tested according to the test strategy, wherein obtaining the sample engine oil comprises:
Adjusting the inlet temperature of an oxidation catalyst in the post-injection diesel engine according to the regeneration test strategy so that a diesel particulate filter of the post-injection diesel engine performs dilution test on the original engine oil through working condition circulation between a carbon accumulating working condition and a regeneration working condition;
And when the preset cycle times are reached, acquiring sample engine oil in the post-injection diesel engine.
2. The engine oil dilution risk assessment method according to claim 1, wherein the direct injection gasoline engine includes a primary injection gasoline engine and a secondary injection gasoline engine;
the obtaining the target test parameters corresponding to the working condition test strategy comprises the following steps:
When the direct injection gasoline engine is a primary injection gasoline engine, acquiring a first calibration parameter of a first working condition corresponding to the primary injection gasoline engine, and taking the first calibration parameter as a target test parameter corresponding to the working condition test strategy;
And when the direct injection gasoline engine is a secondary injection gasoline engine, acquiring a second calibration parameter of a second working condition corresponding to the secondary injection gasoline engine, and taking the second calibration parameter as a target test parameter corresponding to the working condition test strategy.
3. The engine oil dilution risk assessment method according to claim 1, wherein the performing an oil dilution test on the original engine oil in the direct injection engine according to the target test parameter, to obtain a sample engine oil includes:
Determining environmental parameters and rated engine parameters according to the target test parameters;
Setting corresponding test working conditions based on the environmental parameters and the rated engine parameters;
The rotating speed value and the load value of the direct injection gasoline engine are adjusted according to a preset test period under the test working condition;
And performing an engine oil dilution test on the original engine oil in the direct injection engine according to the rotating speed value and the load value to obtain sample engine oil.
4. The engine oil dilution risk assessment method according to any one of claims 1 to 3, characterized in that the obtaining the engine oil dilution risk assessment result of the engine to be tested from the oil dilution corresponding to the sample engine oil includes:
Acquiring the mounting position of an oil injector of the engine to be tested;
determining a dilution evaluation threshold according to the installation position of the fuel injector;
comparing the oil dilution corresponding to the sample oil with the dilution evaluation threshold;
and evaluating the sample engine oil according to the comparison result to obtain an engine oil dilution risk evaluation result of the engine to be tested.
5. An engine oil dilution risk assessment device, characterized in that the engine oil dilution risk assessment device comprises:
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the engine type of an engine to be tested, wherein the engine to be tested is added with original engine oil;
the searching module is used for determining a corresponding testing strategy according to the engine type;
the testing module is used for carrying out engine oil dilution testing on the original engine oil in the engine to be tested according to the testing strategy to obtain sample engine oil;
The evaluation module is used for obtaining an engine oil dilution risk evaluation result of the engine to be tested according to the engine oil dilution corresponding to the sample engine oil;
the test module is further used for obtaining performance parameters of a target vehicle according to a whole vehicle test strategy, wherein the target vehicle is provided with the engine to be tested;
judging whether the target vehicle is in a full-load state according to the performance parameters;
Acquiring the road environment temperature when the target vehicle is in a full-load state;
When the road environment temperature accords with a preset test condition, controlling the target vehicle to run under a preset road working condition;
acquiring the driving distance of the target vehicle under the preset road working condition, and extracting sample engine oil from an engine to be tested, which is arranged on the target vehicle, when the driving distance reaches the preset distance;
the searching module is also used for searching a working condition testing strategy corresponding to the direct injection gasoline engine from a pre-constructed mapping relation;
the test module is also used for acquiring target test parameters corresponding to the working condition test strategy;
performing engine oil dilution test on original engine oil in the direct injection engine according to the target test parameters to obtain sample engine oil;
the searching module is also used for searching a regeneration test strategy corresponding to the post-injection diesel engine from a pre-constructed mapping relation;
the test module is further used for adjusting the inlet temperature of an oxidation catalyst in the post-injection diesel engine according to a regeneration test strategy so that a diesel particulate filter of the post-injection diesel engine can perform dilution test on the original engine oil through working condition circulation between a carbon accumulating working condition and a regeneration working condition;
And when the preset cycle times are reached, acquiring sample engine oil in the post-injection diesel engine.
6. An engine oil dilution risk assessment apparatus, characterized by comprising: a memory, a processor, and an engine oil dilution risk assessment program stored on the memory and operable on the processor, the engine oil dilution risk assessment program configured to implement the steps of the engine oil dilution risk assessment of any one of claims 1 to 4.
7. A storage medium having stored thereon an engine oil dilution risk assessment program which when executed by a processor performs the steps of engine oil dilution risk assessment according to any one of claims 1 to 4.
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