CN1115560C - Equipment and method for evaluating detergent-dispersant and antioxidizing natures of machine oil - Google Patents
Equipment and method for evaluating detergent-dispersant and antioxidizing natures of machine oil Download PDFInfo
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- CN1115560C CN1115560C CN 99113923 CN99113923A CN1115560C CN 1115560 C CN1115560 C CN 1115560C CN 99113923 CN99113923 CN 99113923 CN 99113923 A CN99113923 A CN 99113923A CN 1115560 C CN1115560 C CN 1115560C
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- machine oil
- oil dripping
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Abstract
A kind of machine oil detergent-dispersant performance belongs to the detection class field of lubricating oil with inoxidizability assessment device and its method. Specifically include that power controller, heater, test specimen, reserve tube, bracket and grading board, specimen sleeve is in the outer surface of heater, it is fixed on bracket together with heater, and there is a slanted angle with horizontal line, power controller couples with power supply and heater respectively, reserve tube, which is located above test specimen, to be fixed on bracket, reserve tube oil dripping mouth is vertically downward, intersect with test specimen outer surface center line, the design parameter of reserve tube should make reserve tube oil dripping mouth in oil dripping, according to different engine oil viscosities, oil dripping flow should meet:
, assessment method are as follows: keep 330 DEG C of ± 10 DEG C of high temperature in inclined surface of test piece, in defined test period 2.5 minutes, gravity oil dripping generates paint film in high temperature surface of test piece, compares grading board, rapidly and accurately evaluates the quality of machine oil.
Description
Technical field
What the present invention relates to is a kind of machine oil assessment device and method thereof, in particular a kind of machine oil detergent-dispersant performance and inoxidizability assessment device and method thereof.The detection type field that belongs to lubricating oil.
Background technology
The oil draining period of correct judgement motor oil is engine maintaining and uses one of major issue of machine oil economically, though existing at present GB/T8028-94 is about the standard of changing oil of motor oil, but also there are many problems in it aspect actual degradation mode that accurately reflects machine oil, and the analysis way is very complicated, also need be equipped with expensive equipment and test, actual use is very restricted.Evaluation to machine oil oil can utilize simulation experiment method by machine oil detergent-dispersant performance and anti-oxidant the test and appraisal are realized in the background technology, test as the coking plate.But tested 4～6 hours consuming time, used device needs tens thousand of units, thereby applies very difficult.By literature search, do not find as yet that so far an example is easy fast about accuracy of judgement, detection, assessment method that cost is cheap again or assessment device.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, propose a kind of fast and convenient with low cost, test and appraisal accurate reasonably machine oil detergent-dispersant performance and inoxidizability assessment method and device thereof.
Technical scheme of the present invention is as follows: the major parameter of decision engine motor oil oil can be realized by the action effect of assay determination detergent-dispersant additive.At 330 ℃ ± 10 ℃, the aluminium foil surface that tilts adopts the oil dripping mode, form thin oil film, within a certain period of time oil film is carried out the thermal oxide test, the lacquering situation of simulation motor oil when pistons work investigated motor oil detergent-dispersant performance and inoxidizability with the change color of paint film on the aluminium foil.According to a large amount of tests, select representative test specimen, according to the sedimental color of its surperficial paint film and with reference to coke content, be made into other scoring plate of corresponding some levels.The paint film that generates on the contrast aluminium foil is determined the scoring rank, comes to determine pairing detergent-dispersant performance and inoxidizability index again according to the scoring rank, thereby can judge the oil and the drain interval of machine oil rapidly, accurately, easily.The present invention is divided into machine oil detergent-dispersant performance and inoxidizability assessment device and machine oil detergent-dispersant performance and inoxidizability assessment method two large divisions.Assessment device mainly comprises power controller, well heater, test specimen, reserve tube and support, specimen sleeve is at the outside surface of well heater, be fixed on the support together, and one slanted angle is arranged with horizontal line, power controller connects with power supply and well heater respectively, and reserve tube is positioned at the test specimen upper fixed on support, and reserve tube oil dripping mouth vertically downward, oil dripping mouth vertical line is downward, intersects with test specimen outside surface center line.The design parameter of reserve tube should satisfy when reserve tube oil dripping mouth during at oil dripping, and according to different engine oil viscosities, the oil dripping flow should satisfy:
In the formula: g is the weight acceleration, and h is a machine oil average height in reserve tube, and r is the oil dripping port radius, and L is an oil dripping mouth capillary pipe length, and ρ is a machine oil density, and υ is a machine oil kinematic viscosity.Therefore, the machine oil of corresponding different viscosities should be selected the reserve tube of suitable parameters, assessment method mainly is to keep 330 ℃ ± 10 ℃ high temperature on the test specimen surface that tilts, in 2.5 fens kinds of test period of regulation, the gravity oil dripping generates paint film on high temperature test specimen surface, according to the sedimental color contrast scoring of surperficial paint film plate, determine the detergency and the anti-oxidant voltinism index of machine oil, and evaluate the quality of machine oil rapidly and accurately.
Description of drawings
Fig. 1 assessment device structural representation of the present invention
Fig. 2 reserve tube structural representation
Embodiment
As depicted in figs. 1 and 2, the present invention is divided into machine oil detergent-dispersant performance and inoxidizability assessment device and machine oil detergent-dispersant performance and inoxidizability assessment method two large divisions.Assessment device mainly comprises power controller 1, well heater 2, test specimen 3, reserve tube 4 and support 5, test specimen 3 is enclosed within the outside surface of well heater 2, be fixed on the support 5 with well heater 2, and one slanted angle is arranged with horizontal line, power controller 1 connects with power supply and well heater 2 respectively, and reserve tube 4 is positioned at test specimen 3 upper fixed on support 5, and reserve tube 4 oil dripping mouths vertically downward, oil dripping mouth vertical line is downward, intersects with test specimen 3 outside surface center lines.The design parameter Q of reserve tube 4 should satisfy when reserve tube 4 oil dripping mouths during at oil dripping, according to different engine oil viscosities, the oil dripping flow should satisfy in the Q=formula: g is the weight acceleration, h is a machine oil average height in reserve tube 4, r is the oil dripping port radius, L is an oil dripping mouth capillary pipe length, and ρ is a machine oil density, and υ is a machine oil kinematic viscosity.According to different engine oil viscosities, should select suitable reserve tube 4, assessment method mainly is to keep 330 ℃ ± 10 ℃ high temperature on test specimen 3 surfaces that tilt, in the test period of regulation in 2.5 minutes, the gravity oil dripping generates paint film on high temperature test specimen 3 surfaces, according to the sedimental color contrast scoring of surperficial paint film plate, determine the detergency and the anti-oxidant voltinism index of machine oil, and evaluate the quality of machine oil rapidly and accurately.
Claims (2)
1, a kind of machine oil detergent-dispersant performance and inoxidizability assessment device, it is characterized in that mainly comprising: power controller (1), well heater (2), test specimen (3), reserve tube (4), support (5) and according to a large amount of tests, select representative test specimen, according to the sedimental color of its surperficial paint film and other scoring plates of corresponding some levels of being made with reference to carbon deposition quantity, test specimen (3) is enclosed within the outside surface of well heater (2), be fixed on the support (5) with well heater (2), and one slanted angle is arranged with horizontal line, power controller (1) connects with power supply and well heater (2) respectively, reserve tube (4) is positioned at test specimen (3) upper fixed on support (5), reserve tube (4) oil dripping mouth vertically downward, intersect with test specimen (3) outside surface center line, the design parameter of reserve tube (4) should make reserve tube (4) oil dripping mouth when oil dripping, according to different engine oil viscosities, the oil dripping flow should satisfy:
, in the formula: g is the weight acceleration, and h is a machine oil average height in reserve tube, and r is the oil dripping port radius, and L is an oil dripping mouth capillary pipe length, and ρ is a machine oil density, and υ is a machine oil kinematic viscosity.
2, a kind of machine oil detergent-dispersant performance and inoxidizability assessment method, it is characterized in that keeping 330 ℃ ± 10 ℃ high temperature on test specimen (3) surface that tilts, in the test period of stipulating 2.5 minutes, the gravity oil dripping generates paint film on high temperature test specimen (3) surface, according to the sedimental color contrast scoring of surperficial paint film plate, determine the detergency and the inoxidizability index of machine oil, and evaluate the quality of machine oil rapidly and accurately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113923 CN1115560C (en) | 1999-07-29 | 1999-07-29 | Equipment and method for evaluating detergent-dispersant and antioxidizing natures of machine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113923 CN1115560C (en) | 1999-07-29 | 1999-07-29 | Equipment and method for evaluating detergent-dispersant and antioxidizing natures of machine oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1249430A CN1249430A (en) | 2000-04-05 |
| CN1115560C true CN1115560C (en) | 2003-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113923 Expired - Fee Related CN1115560C (en) | 1999-07-29 | 1999-07-29 | Equipment and method for evaluating detergent-dispersant and antioxidizing natures of machine oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1115560C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384969B (en) * | 2010-09-03 | 2014-11-26 | 中国石油化工股份有限公司 | Evaluation method on transformer oil |
| CN102384930B (en) * | 2010-09-03 | 2013-10-30 | 中国石油化工股份有限公司 | Evaluation method on antioxidation performance of transformer oil |
| CN102135507B (en) * | 2010-12-26 | 2013-07-24 | 中国第一汽车集团公司 | Method for testing and simulating dispersion of engine oil |
| CN103472063B (en) * | 2013-09-17 | 2015-05-06 | 长安大学 | Image processing-based method for determining detergency and dispersibility of engine lubricating oil |
| CN104865256B (en) * | 2015-04-01 | 2017-08-25 | 长安大学 | A kind of automobile engine oil detergent-dispersant performance method for quantitatively determining of Multi-source Information Fusion |
| CN107525911B (en) * | 2017-09-12 | 2023-08-08 | 滨州学院 | Test bed and test method for simulating generation of engine oil carbon deposit |
| CN109187372B (en) * | 2018-09-05 | 2021-04-13 | 浙江吉利控股集团有限公司 | Paint film scoring method for alcohol fuel engine lubricating system and application |
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1999
- 1999-07-29 CN CN 99113923 patent/CN1115560C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1249430A (en) | 2000-04-05 |
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