CN103954742B - In diesel engine, diesel oil is mixed into machine oil measurement mechanism and measuring method - Google Patents
In diesel engine, diesel oil is mixed into machine oil measurement mechanism and measuring method Download PDFInfo
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Abstract
The invention discloses diesel oil in a kind of diesel engine and be mixed into machine oil measurement mechanism and measuring method.Measuring method comprises: step 1: carry out diesel oil and be mixed into machine oil proportioning test, wherein measures machine oil kinetic viscosity and oil temperature; Step 2: be mixed into machine oil proportioning test result based on diesel oil, sets up diesel oil and is mixed into relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature; Step 3: the machine oil kinetic viscosity and the oil temperature that detect vehicle-mounted diesel engine; Step 4: calculate the ratio that diesel oil is mixed into machine oil based on the machine oil kinetic viscosity of relational expression and detection and oil temperature, and the ratio of calculating and predetermined proportion threshold value are compared, to judge whether ratio that diesel oil is mixed into machine oil exceedes the upper limit of proportion threshold value.Be mixed into machine oil measuring method according to diesel oil in diesel engine of the present invention, machine oil ratio can be mixed into by diesel oil in Measurement accuracy diesel engine, have the needs being used in and meeting vehicle on-board monitoring.
Description
Technical field
The present invention relates to diesel engine arts, specifically, particularly in a kind of diesel engine, diesel oil is mixed into machine oil measurement mechanism and measuring method.
Background technology
In working process of diesel engine, if there is diesel oil to be mixed into machine oil, machine oil viscosity can be caused to decline.If continue use can aggravate engine scuffing, shorten its serviceable life, affect the normal work of diesel engine.At present, diesel oil is mixed into machine oil and judges the main methods such as observing machine oil viscosity, level height change that adopts, and the method can only qualitative analysis, cannot realize accurate judgement; And the measurement that traditional diesel oil is mixed into machine oil ratio mainly uses the oil analysis instrument of off-line type, costly, length consuming time, cannot realize vehicle-mounted monitoring to the method.
Summary of the invention
The present invention is intended to solve one of above-mentioned technical matters of the prior art at least to a certain extent.For this reason, one object of the present invention is to propose a kind ofly can be mixed into diesel oil in the diesel engine of machine oil ratio and be mixed into machine oil measuring method by diesel oil in Measurement accuracy diesel engine.
Another object of the present invention is to propose diesel oil in a kind of diesel engine and be mixed into machine oil measurement mechanism.
Be mixed into machine oil measuring method according to diesel oil in the diesel engine of the embodiment of the present invention, comprise: step 1: carry out diesel oil and be mixed into machine oil proportioning test, wherein measure machine oil kinetic viscosity and oil temperature; Step 2: be mixed into machine oil proportioning test result based on diesel oil, sets up diesel oil and is mixed into relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature; Step 3: the machine oil kinetic viscosity and the oil temperature that detect vehicle-mounted diesel engine; Step 4: calculate the ratio that diesel oil is mixed into machine oil based on the machine oil kinetic viscosity of described relational expression and detection and oil temperature, and the ratio of calculating and predetermined proportion threshold value are compared, to judge whether ratio that diesel oil is mixed into machine oil exceedes the upper limit of described proportion threshold value.
In diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, take into full account that diesel oil is mixed into the impact of machine oil on kinetic viscosity to the impact of machine oil kinetic viscosity and other factors after being mixed into machine oil, machine oil ratio can be mixed into by diesel oil in Measurement accuracy diesel engine, have the needs being used in and meeting vehicle on-board monitoring.And in diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, the vehicle-mounted monitoring of machine oil quality abnormal can be realized, accurately determine oil exchange opportunity, for lubricating system of diesel oil engine technology status judges to provide accurate way, save Maintenance Resource, improve vehicle avail ability rate.
In addition, in diesel engine according to the above embodiment of the present invention, diesel oil is mixed into machine oil measuring method and can also has following additional technical characteristic:
According to one embodiment of present invention, in step 2: the diesel oil machine oil kinetic viscosity be mixed in the relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature is the amplitude of variation U of kinetic viscosity relative to machine oil initial viscosity,
In formula: μ
0for machine oil initial viscosity, μ measures the machine oil k value obtained under same temperature.
According to one embodiment of present invention, the ratio being mixed into machine oil when diesel oil exceedes the upper of described proportion threshold value and sends warning in limited time.
In diesel engine, diesel oil is mixed into machine oil measurement mechanism according to an embodiment of the invention, comprising: machine oil quality measurement sensor, and described machine oil quality measurement sensor is for monitoring the machine oil viscosity of diesel engine; Sensor device stationary installation, described sensor device stationary installation is connected with described machine oil quality measurement sensor, and is fixed in sump by described machine oil quality measurement sensor; Embedded main board, for data processing and calculating; CAN changes R232 serial ports, and described CAN changes R232 serial ports and is connected with described machine oil quality measurement sensor, for converting the signal of machine oil quality measurement sensor to described embedded main board acceptable signal; Storage card, described storage card is connected with described embedded main board, stores for data; And liquid crystal display, described liquid crystal display is connected with described embedded main board, shows for data.
In diesel engine, diesel oil is mixed into machine oil measurement mechanism according to an embodiment of the invention, take into full account that diesel oil is mixed into the impact of machine oil on kinetic viscosity to the impact of machine oil kinetic viscosity and other factors after being mixed into machine oil, machine oil ratio can be mixed into by diesel oil in Measurement accuracy diesel engine, have the needs being used in and meeting vehicle on-board monitoring.And in diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, the vehicle-mounted monitoring of machine oil quality abnormal can be realized, accurately determine oil exchange opportunity, for lubricating system of diesel oil engine technology status judges to provide accurate way, save Maintenance Resource, improve vehicle avail ability rate.
In addition, in diesel engine according to the above embodiment of the present invention, diesel oil is mixed into machine oil measurement mechanism and can also has following additional technical characteristic:
According to one embodiment of present invention, described sensor fastening device comprises: upper cover, and described upper cover and sump are tightly connected; Connecting link, the upper end of described connecting link is connected with described upper cover, is provided with data line in described connecting link; Top cylinder and doffing, described top cylinder and described doffing fasten, and to be fixed by described machine oil quality measurement sensor and to be sealed in described top cylinder and described doffing, the upper end of described top cylinder is connected with the lower end of described connecting link; And lower cover, described lower cover is connected with the lower end of described doffing, for the protection of described machine oil quality measurement sensor.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measuring method schematic diagram;
Fig. 2 is that the diesel oil that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measuring method is mixed into machine oil kinetic viscosity change schematic diagram in proportioning test;
Fig. 3 is that the chilled water that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measuring method is mixed into machine oil kinetic viscosity change schematic diagram in proportioning test;
Fig. 4 is that the soot that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measuring method is mixed into machine oil kinetic viscosity change schematic diagram in proportioning test;
Fig. 5 is the machine oil viscosity-temperature characteristic matched curve schematic diagram that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measuring method;
Fig. 6 is that the machine oil kinetic viscosity that in diesel engine according to an embodiment of the invention, diesel oil is mixed into the different diesel fuel volume marks of machine oil measuring method varies with temperature curve synoptic diagram;
Fig. 7 is that the machine oil U value that in diesel engine according to an embodiment of the invention, diesel oil is mixed into the different diesel fuel volume marks of machine oil measuring method varies with temperature curve synoptic diagram;
Fig. 8 is the structural representation that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measurement mechanism;
Fig. 9 is the machine oil quality measurement sensor construction schematic diagram that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measurement mechanism;
Figure 10 is the machine oil quality measurement three-dimensional sensor decomposing schematic representation that in diesel engine according to an embodiment of the invention, diesel oil is mixed into machine oil measurement mechanism.
Reference numeral:
10-machine oil quality measurement sensor; 20-sensor device stationary installation; 21-upper cover; 22-connecting link; 23-top cylinder; 24-doffing; 25-lower cover; 30-CAN changes R232 serial ports; 40-embedded main board; 50-storage card; 60-liquid crystal display.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
As shown in figs. 1-7, be mixed into machine oil measuring method according to diesel oil in the diesel engine of the embodiment of the present invention, comprise: step 1: carry out diesel oil and be mixed into machine oil proportioning test, wherein measure machine oil kinetic viscosity and oil temperature; Step 2: be mixed into machine oil proportioning test result based on diesel oil, sets up diesel oil and is mixed into relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature; Step 3: the machine oil kinetic viscosity and the oil temperature that detect vehicle-mounted diesel engine; Step 4: calculate the ratio that diesel oil is mixed into machine oil based on the machine oil kinetic viscosity of described relational expression and detection and oil temperature, and the ratio of calculating and predetermined proportion threshold value are compared, to judge whether ratio that diesel oil is mixed into machine oil exceedes the upper limit of described proportion threshold value.
In diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, take into full account that diesel oil is mixed into the impact of machine oil on kinetic viscosity to the impact of machine oil kinetic viscosity and other factors after being mixed into machine oil, machine oil ratio can be mixed into by diesel oil in Measurement accuracy diesel engine, have the needs being used in and meeting vehicle on-board monitoring.And in diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, the vehicle-mounted monitoring of machine oil quality abnormal can be realized, accurately determine oil exchange opportunity, for lubricating system of diesel oil engine technology status judges to provide accurate way, save Maintenance Resource, improve vehicle avail ability rate.
According to one embodiment of present invention, in step 2: the diesel oil machine oil kinetic viscosity be mixed in the relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature is the amplitude of variation U of kinetic viscosity relative to machine oil initial viscosity,
In formula: μ
0for machine oil initial viscosity, μ measures the machine oil k value obtained under same temperature.
According to one embodiment of present invention, the ratio being mixed into machine oil when diesel oil exceedes the upper of described proportion threshold value and sends warning in limited time.
Embodiments provide diesel oil in a kind of diesel engine and be mixed into machine oil measuring method, as shown in Figure 1, specifically comprise the following steps:
Step one: carry out diesel oil and be mixed into machine oil proportioning test; In proportioning test, measure machine oil kinetic viscosity, oil temperature.
Use standard according to machine oil, should change machine oil when machine oil standard movement viscosity (kinematic viscositys when 100 DEG C) variable quantity is greater than 25% of new machine oil standard movement viscosity, calculating based on experience value and being now mixed into diesel oil is about 10%.Therefore design 4 groups of mixed oil liquid samples, fluid volume is 1600mL.According to equal difference principle, in 1 ~ No. 4 fluid sample, diesel fuel volume mark is respectively 0%, 5%, 8%, 11%.Naturally cool to 50 DEG C after mixed oil liquid being heated to 110 DEG C during test, in cooling procedure, utilize its fluid parameter of sensor measurement.Test machine oil is the new machine oil of CD10W/40, and diesel oil is-10# diesel oil (kinetic viscosity is 2.94mPas 20 DEG C time, and specific inductive capacity is 2.1, and density is 0.84gcm-3).
Table 1 quantitative test scheme
Concrete test findings as shown in Figure 2.In figure, along with diesel oil is mixed into the rising of ratio, machine oil kinetic viscosity presents continuous downward trend.
Step 2: be mixed into machine oil proportioning test based on diesel oil, sets up diesel oil and is mixed into machine oil ratio and machine oil kinetic viscosity, oil temperature relational expression; Concrete steps comprise:
Step 1: be mixed into proportioning test data according to diesel oil, utilization index Function Fitting goes out containing the machine oil kinetic viscosity μ of different diesel fuel volume mark and the funtcional relationship of temperature t and viscosity-temperature characteristic curve, as shown in Figure 5.Matched curve related coefficient is all in close proximity to 1.Each bar viscosity-temperature characteristic curvilinear equation is as shown in the formula shown in (1) ~ (4), and related coefficient is respectively 0.9989,0.9994,0.9997,0.9994.Diesel fuel volume mark is followed successively by 0%, 5%, 8%, 11%.
μ=352.4exp(-0.06963t)+52.77exp(-0.01429t)(1)
μ=312.1exp(-0.06734t)+39.09exp(-0.01321t)(2)
μ=120.6exp(-0.03814t)+11.46exp(-0.00485t)(3)
μ=152.6exp(-0.05581t)+29.08exp(-0.01254t)(4)
Step 2: utilize interpolation calculation, under obtaining same temperature, the machine oil k value of diesel fuel volume mark from 0% ~ 11%, diesel fuel volume mark raises one percentage point and calculates a k value, obtains viscosity-temperature curve as shown in Figure 6.From top to bottom, diesel fuel volume mark is respectively 0%, 1%, 2% ..., 11%.
Step 3: because the new machine oil viscosity-temperature characteristic of different model different batches there are differences, therefore, the sample curve in Fig. 6 can only objectively respond the kinetic viscosity situation of change of this test machine oil.In order to the situation that the kinetic viscosity of different machine oil affects by diesel oil can be judged, eliminate the impact that initial viscosity difference is brought, choose the amplitude of variation of kinetic viscosity relative to initial viscosity as criterion, be designated as U
In formula: μ 0 is new machine oil k value, μ is tested machine oil k value under same temperature.
Method according to above formula defined calculates, and the machine oil U value obtained containing different diesel fuel volume mark varies with temperature curve, as shown in Figure 7 (diesel fuel volume mark is followed successively by 11% to 1% from top to bottom).Definition temperature, U value are input variable, and diesel fuel volume mark is output variable.
Step 4, the present invention utilize but are not limited to radial basis function (RadialBasisFunction, RBF) carry out diesel oil and be mixed into the calculating of machine oil ratio, according to RBF neural structure, select the temperature under different diesel fuel volume mark, viscosity amplitude of variation as input variable, diesel fuel volume mark is as output variable.Transport function in neural network model uses Gaussian function, and output layer uses linear function.Model is set to
[net，tr]＝newrd(P，T，5×10
-7，1，1000，10)(6)
In formula: P is for building the input vector required for network; T is sample output vector; Net is the radial basis function network generated; Tr is the training record generated.
Step 3, embodiments provide diesel oil in a kind of diesel engine and be mixed into machine oil vehicle-bone monitoring device, as shown in Figure 8, the embodiment of the present invention provides vehicle-bone monitoring device to comprise: machine oil quality measurement sensor 10, for vehicle-mounted monitoring machine oil viscosity; Sensor device stationary installation 20, fixing for sump inner engine oil quality measurement sensor; CAN changes R232 serial ports 30, for converting machine oil quality measurement sensor signal to mainboard acceptable signal; Embedded main board 40, for data processing and calculating; Storage card 50, stores and liquid crystal display 60 for data, shows by data.Concrete described sensor fastening device 20 comprises: upper cover 21, for being tightly connected with sump; Connecting link 22, is connected with top cylinder 23 for upper cover 21, and has data line to pass through in bar; Top cylinder 23 and doffing 24, for the fixing of sensor and sealing; Lower cover 25, protects for sensor probe.
As seen in figs. 8-10, in diesel engine, diesel oil is mixed into machine oil measurement mechanism according to an embodiment of the invention, comprising: machine oil quality measurement sensor 10, sensor device stationary installation 20, embedded main board 40, CAN change R232 serial ports 30, storage card 50 and liquid crystal display 60.
Specifically, machine oil quality measurement sensor 10 is for monitoring the machine oil viscosity of diesel engine; Sensor device stationary installation 20 is connected with machine oil quality measurement sensor 10, and is fixed in sump (not shown) by machine oil quality measurement sensor 10.Embedded main board 40 is for data processing and calculating.CAN changes R232 serial ports 30 and is connected with machine oil quality measurement sensor 10, for converting the signal of machine oil quality measurement sensor 10 to embedded main board 40 acceptable signal.Storage card 50 is connected with embedded main board 40, stores for data.Liquid crystal display 60 is connected with embedded main board 40, shows for data.
In diesel engine, diesel oil is mixed into machine oil measurement mechanism according to an embodiment of the invention, take into full account that diesel oil is mixed into the impact of machine oil on kinetic viscosity to the impact of machine oil kinetic viscosity and other factors after being mixed into machine oil, machine oil ratio can be mixed into by diesel oil in Measurement accuracy diesel engine, have the needs being used in and meeting vehicle on-board monitoring.And in diesel engine, diesel oil is mixed into machine oil measuring method according to an embodiment of the invention, the vehicle-mounted monitoring of machine oil quality abnormal can be realized, accurately determine oil exchange opportunity, for lubricating system of diesel oil engine technology status judges to provide accurate way, save Maintenance Resource, improve vehicle avail ability rate.
According to one embodiment of present invention, sensor fastening device 20 comprises: upper cover 21, connecting link 22, top cylinder 23, doffing 24 and lower cover 25.
Specifically, upper cover 21 and sump are tightly connected.The upper end of connecting link 22 is connected with upper cover 21, is provided with data line in connecting link 22.Top cylinder 23 and doffing 24 fasten, and to be fixed and to be sealed in top cylinder 23 and doffing 24 by machine oil quality measurement sensor 10, the upper end of top cylinder 23 is connected with the lower end of connecting link 22.Lower cover 25 is connected with the lower end of doffing 24, for the protection of machine oil quality measurement sensor 10.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this instructions or example can carry out engaging and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (2)
1. in diesel engine, diesel oil is mixed into a machine oil measuring method, it is characterized in that, comprising:
Step 1: carry out diesel oil and be mixed into machine oil proportioning test, wherein measures machine oil kinetic viscosity and oil temperature;
Step 2: be mixed into machine oil proportioning test result based on diesel oil, set up diesel oil and be mixed into relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature, wherein, the described diesel oil machine oil kinetic viscosity be mixed in the relational expression between the ratio of machine oil and machine oil kinetic viscosity and oil temperature is the amplitude of variation U of kinetic viscosity relative to machine oil initial viscosity
In formula: μ
0for machine oil initial viscosity, μ measures the machine oil k value obtained under same temperature;
Step 3: the machine oil kinetic viscosity and the oil temperature that detect vehicle-mounted diesel engine;
Step 4: calculate the ratio that diesel oil is mixed into machine oil based on the machine oil kinetic viscosity of described relational expression and detection and oil temperature, and the ratio of calculating and predetermined proportion threshold value are compared, to judge whether ratio that diesel oil is mixed into machine oil exceedes the upper limit of described proportion threshold value.
2. the method for claim 1, is characterized in that, the ratio being mixed into machine oil when diesel oil exceedes the upper of described proportion threshold value and sends warning in limited time.
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| CN107238551B (en) * | 2017-05-02 | 2020-07-14 | 武汉天富海科技发展有限公司 | Device for testing viscosity-temperature characteristic of lubricating oil of ship gas turbine |
| WO2019021502A1 (en) * | 2017-07-28 | 2019-01-31 | 日立建機株式会社 | Oil diagnosis system |
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