CN100510691C - Diesel-oil clean performance inspection and inspector thereof - Google Patents
Diesel-oil clean performance inspection and inspector thereof Download PDFInfo
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- CN100510691C CN100510691C CNB2005100961226A CN200510096122A CN100510691C CN 100510691 C CN100510691 C CN 100510691C CN B2005100961226 A CNB2005100961226 A CN B2005100961226A CN 200510096122 A CN200510096122 A CN 200510096122A CN 100510691 C CN100510691 C CN 100510691C
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Abstract
A method for detecting cleanness of diesel oil includes flowing diesel oil on sediment collector with operation surface in slope mode, generating sediment on operation surface of sediment collector under action of heater and after certain period of time, utilizing quantitative analysis means to determine out weight of sediment for knowing cleanness of diesel oil clearly.
Description
Technical field the invention belongs to the technical field of petroleum chemicals Performance Detection, particularly a kind of diesel cleaning detection method and equipment thereof.
Background technology is along with the upgrading of China's diesel oil heavy-duty car and diesel-powered car and the quantity of diesel vehicle increase severely, there has been stricter requirement in the city to motor vehicle exhaust emission, though diesel car is lower than discharging pollutants of gasoline automobile, but the sediment that diesel oil forms in hot operation causes engine fuel system and spray nozzle clogging easily, make diesel oil flow smooth, atomizing is bad, oil consumption rising, power descend, the discharging black smoke.In order to address this problem, foreign experience is used for reference in more domestic cities, has added diesel oil detergent or complexing agent in diesel oil, reduces the pollution that diesel car brings to urban environment.Before the present invention, domestic and international equipment and method of also not testing commercially available diesel cleaning, domestic and international existing technical method is: adopt European engine XUD-9 bench test equipment and method (European standard CEC F-23-A-01), this method is evaluated the peace and quiet effect of diesel oil detergent by the cleanliness of test diesel fuel nozzle, domestic have only CNPC, there is this stand in two R﹠D institutions of Sinopec subordinate, because engine pedestal is long detection time, the testing expenses height, bench test equipment needs special-purpose factory building, a lot of utility appliance and professional and technical personnel control, use can't be popularized, the access detection that the diesel oil detergent product comes into the market can only be done.And technical supervision administrative authority carries out the detergency detection to commercially available diesel oil (contain agent or do not contain agent), and the diesel oil detergent production unit carries out the screening of detersive prescription and the production link sampling is monitored, and but lacks a kind of feasible evaluation means.
Summary of the invention the purpose of this invention is to provide low, the easy economy of a kind of experimental expenses, be easy to popularize and with bench test the diesel cleaning analog detection method and the equipment thereof of good correlation are arranged.
For achieving the above object, the technical scheme that the present invention takes is: a kind of diesel cleaning detection method may further comprise the steps:
1. the sediment trap with a cleaning goes to weigh with balance, promptly obtains m
0, be accurate to more than the 0.1mg;
2. this sediment trap is heated to 240～300 ℃ test temperature;
3. diesel oil flows to 1～4ml/min speed on the workplace of sediment trap, forms the oil film that one deck evenly flows;
4. every 100ml diesel oil is after the time through 25～100min, oil film on the sediment trap workplace is under the baking of high temperature, oxidation has generated one deck paint film, the place that paint film is thicker and color is darker forms carbon deposit, and every 100ml basis diesel oil (not containing diesel oil detergent) sediment Weight control is at 3～6mg;
5. sediment trap is put into normal heptane solvent and soaked 1～3 minute, will be suspended in deposit surface can dissolved substances dissolve;
6. will be attached with sedimental sediment trap and go to weigh, promptly obtain mi, be accurate to more than the 0.1mg with balance;
7. deduct the weight m that tests preceding sediment trap with being attached with sedimental sediment trap weight mi
0, obtaining the sedimental weight m of detected diesel oil, this gravimetric value has been represented the cleansing performance of tested diesel oil, and numerical value is more little, and diesel oil is cleaning more;
If the 8. sedimental weight m that generates with the diesel oil that adds detersive
1Sedimental weight m divided by basic diesel oil (with detersive) generation
2, multiply by 100% again, can obtain the coking power Δ (%) of this detersive, percentage is more little, shows that the cleaning action of detersive is good more, just shows that also the detergency of diesel oil is good more.
A kind of equipment of realizing above-mentioned diesel cleaning detection method, its sediment trap is placed on the well heater, the sediment trap workplace is the inclined-plane, clamp system is fixed on sediment trap on the well heater, back and forth the outlet of travel mechanism oil pipe is arranged on the high-end top of sediment trap workplace, back and forth the import of travel mechanism oil pipe is connected with volume pump, and the oil pipe inlet of volume pump inserts in the diesel oil container, and the lower end of sediment trap workplace is provided with a waste oil container.
Above-mentioned sediment trap, well heater link to each other with controller, have the temperature control system of depositor gatherer, the overtemperature prote control system and the test period of well heater to stop automatic stop control system in the controller.
Above-mentioned sediment trap, well heater, waste oil container are contained in the protective cover, and the top of protective cover is equipped with the observation transparency window.
Above-mentioned diesel cleaning property testing method provided by the invention and equipment thereof, be in the working condition of simulation diesel motor nozzle chamber and generate on the basis of sedimental mechanism and obtain that the coking power (%) that obtains with this method has good correlativity with the cleanliness (air mass flow is lost %) of diesel motor XUD-9 bench test method (European standard CEC F-23-A-01) nozzle.And detection time is short, and testing expenses are low, and equipment investment is little, and is easy and simple to handle, can carry out in ordinary laboratory, and process of the test is directly perceived, and test findings has good differentiation and repeatability.Not only can detect the peace and quiet degree of diesel oil detergent, and can detect the detergency of diesel oil itself, be applicable to that the diesel oil detergent production unit carries out screening of detersive prescription and production link sampling monitoring, is applicable to that also technical supervision administrative authority carries out detergency to commercially available diesel oil (contain agent or do not contain agent) and detects.
Description of drawings Fig. 1 is the structural representation of diesel cleaning property testing equipment;
Fig. 2 is the correlationship figure of diesel cleaning checkout equipment simulation test and bench test.
Among the figure: 1-sediment trap; 2-well heater; 3-clamp system; 4-back and forth travel mechanisms; 5-oil pipe; 6-diesel oil container; 7-volume pump; 8-waste oil container; 9-protective cover; 10-controller; 11-oil smoke processor; 12-sediment trap temperature control system; 13-overtemperature prote control system; 14-test period stops automatic stop control system; 15-observation transparency window.
Embodiment as shown in Figure 1; among the embodiment of diesel cleaning property testing equipment provided by the invention; its sediment trap 1 is placed on the well heater 2; clamp system 3 is fixed on sediment trap 1 on the well heater 2; sediment trap 1, well heater 2 link to each other with controller 10, have sediment trap temperature control system 12, well heater overtemperature prote control system 13 and test period to stop automatic stop control system 14 in the controller 10.The workplace of sediment trap 1 is the inclined-plane, workplace along the diesel oil flow direction is shape or spill low between the senior middle school of both sides, the xsect of the sediment trap 1 vertical with the diesel oil flow direction can be rectangle, triangular form, camber, semi-circular or ladder type, its low side side-looking section consistent with the diesel oil flow direction is camber, hypotenuse type, sloping type or olecranon type, so that waste oil effectively flows in the waste oil container 8.That well heater 2 can adopt is plate, L type, △ type, semi-circular or ladder type, also takes the form of inclined plane, suitable with the bottom surface of sediment trap 1.Clamp system 3 utilizes the pressure of spring to push down sediment trap 1 two ends respectively, also can use screw-clamped.Back and forth oil pipe 5 outlets of travel mechanism 4 are arranged on the high-end top of sediment trap 1 workplace, and back and forth travel mechanism 4 is a linear reciprocating motion, available tooth bar mode, also available cylinder-connecting rod mode, screw mandrel mode or connecting rod of eccentric wheel mode.Back and forth oil pipe 5 imports of travel mechanism 4 are connected with volume pump 7, and oil pipe 5 inlets of volume pump 7 insert in the diesel oil containers 6, volume pump 7 dependable flows steadily, accurate, can be syringe pump, peristaltic pump, constant-flux pump or infusion pump.The lower end of sediment trap 1 workplace is provided with a waste oil container 8.Above-mentioned sediment trap 1, well heater 2, waste oil container 8 are contained in the protective cover 9, and the top of protective cover 9 is equipped with observes transparency window 15.One oil smoke processor 11 can be set on the above-mentioned protective cover 9.
Utilize the said equipment to carry out the diesel cleaning property testing below, its step comprises:
1. with waterproof abrasive paper sediment trap is polished earlier, do not have dirt up to any surface finish, be put in the baking oven after the water flushing and dry, taking-up is placed in the exsiccator standby.From exsiccator, take out sediment trap and go to weigh, promptly obtain m with balance
0, be accurate to more than the 0.1mg;
2. this sediment trap is placed on the well heater and clamped, be heated to 240～300 ℃ test temperature, for example: the diesel oil of-20 ℃ of condensation points need be heated to 240～255 ℃, and the diesel oil of-10 ℃ of condensation points need be heated to 256～265 ℃, and the diesel oil of 0 ℃ of condensation point need be heated to about 266～300 ℃;
3. volume pump is with 1～2ml/min speed rail fuel feeding at the uniform velocity, oil pipe is under the drive of reciprocal travel mechanism, diesel oil is evenly flow on the workplace of sediment trap in the upper end of sediment trap with per minute 1～2 secondary frequencies, form the oil film that one deck evenly flows;
4. every 100ml diesel oil is after the time through 75～85min, and the oil film on the sediment trap workplace is constantly washed away to be substituted and high-temperature baking, and oxidation has generated one deck paint film, and the place that paint film is thicker and color is darker forms carbon deposit.Every 100ml basis diesel oil (not containing diesel oil detergent) sediment Weight control is at 3～6mg, and fresh basic diesel oil sediment is generally 3～4.5mg, and storage time, long diesel oil sediment was generally 4.5～6mg;
5. sediment trap is put into normal heptane solvent and soaked about 1 minute, will be suspended in deposit surface can dissolved substances dissolve;
6. will be attached with sedimental sediment trap and go to weigh, promptly obtain mi, be accurate to more than the 0.1mg, and the surface topography photograph film-making of sediment trap will be filed with balance;
7. deduct the weight m that tests preceding sediment trap with being attached with sedimental sediment trap weight mi
0, that is: m=mi-m
0, obtaining the sedimental weight m of detected diesel oil, this gravimetric value has been represented the cleansing performance of tested diesel oil, and numerical value is more little, and diesel oil is cleaning more;
If the 8. sedimental weight m that generates with the diesel oil that adds detersive
1Sedimental weight m divided by basic diesel oil (with detersive) generation
2, multiply by 100% again, that is:
△(％)＝m
1/m
2×100％
Can obtain the coking power △ (%) of this detersive, percentage is more little, shows that the cleaning action of detersive is good more, just shows that also the detergency of diesel oil is good more.
Precision (repeatability)
Same operator uses same instrument in same laboratory, and the difference of two results of replication and its arithmetic mean sees the following form:
| Sediment quality mg/100mL | Allow difference |
| ≤2 | 0.3mg |
| >2 | Arithmetic mean ± 10% |
Correlativity
Diesel cleaning detection method and equipment use commercially available 0# derv fuel oil to make basic diesel oil, carry out correlativity with 5 kinds of diesel oil detergents through bench test respectively and investigate, and the correlationship of diesel cleaning checkout equipment simulation test and bench test the results are shown in Figure 2:
As shown in Figure 2, the coking power △ (%) that obtains with this method has good correlativity with the cleanliness (air mass flow loss %) of diesel motor XUD-9 bench test method (European standard CEC F-23-A-01) nozzle.
Claims (10)
1, a kind of diesel cleaning detection method is characterized in that may further comprise the steps:
1. the sediment trap with a cleaning goes to weigh with balance, promptly obtains m
0, be accurate to more than the 0.1mg;
2. this sediment trap is heated to 240～300 ℃ test temperature;
3. diesel oil flows to 1～4ml/min speed on the workplace of sediment trap, forms the oil film that one deck evenly flows;
4. every 100ml diesel oil is after the time through 25～100min, oil film on the sediment trap workplace is under the baking of high temperature, and oxidation has generated one deck paint film, and the place that paint film is thicker and color is darker forms carbon deposit, every 100ml basis diesel oil, the sediment Weight control is at 3～6mg;
5. sediment trap is put into normal heptane solvent and soaked 1～3 minute, will be suspended in deposit surface can dissolved substances dissolve;
6. will be attached with sedimental sediment trap and go to weigh, promptly obtain mi, be accurate to more than the 0.1mg with balance;
7. deduct the weight m that tests preceding sediment trap with being attached with sedimental sediment trap weight mi
0, obtaining the sedimental weight m of detected diesel oil, this gravimetric value has been represented the cleansing performance of tested diesel oil, and numerical value is more little, and diesel oil is cleaning more;
If the 8. sedimental weight m that generates with the diesel oil that adds detersive
1Sedimental weight m divided by basic diesel oil generation
2, multiply by 100% again, can obtain the coking power % of this detersive, percentage is more little, shows that the cleaning action of detersive is good more, just shows that also the detergency of diesel oil is good more.
2, according to the described diesel cleaning detection method of claim 1, it is characterized in that above-mentioned steps is 3., diesel oil flows to 1～2ml/min speed on the workplace of sediment trap, forms the oil film that one deck evenly flows.
3, according to the described diesel cleaning detection method of claim 1, in it is characterized in that above-mentioned steps 4., every 100ml diesel oil is after the time through 75～85min, oil film on the sediment trap workplace is constantly washed away to be substituted and high-temperature baking, oxidation has generated one deck paint film, and the place that paint film is thicker and color is darker forms carbon deposit.
4, according to the described diesel cleaning detection method of claim 1, it is characterized in that above-mentioned steps is 5., sediment trap is put into normal heptane solvent soaked 1 minute, will be suspended in deposit surface can dissolved substances dissolve.
5, a kind of equipment of diesel cleaning detection method according to claim 1 of realizing, the sediment trap (1) that it is characterized in that this equipment is placed on the well heater (2), the workplace of sediment trap (1) is the inclined-plane, clamp system (3) is fixed on sediment trap (1) on the well heater (2), back and forth the outlet of the oil pipe (5) of travel mechanism (4) is arranged on the high-end top of sediment trap (1) workplace, back and forth oil pipe (5) import of travel mechanism (4) is connected with volume pump (7), oil pipe (5) inlet of volume pump (7) inserts in the diesel oil container (6), and the lower end of sediment trap (1) workplace is provided with a waste oil container (8).
6, according to the described diesel cleaning checkout equipment of claim 5; it is characterized in that above-mentioned sediment trap (1), well heater (2) link to each other with controller (10), have sediment trap temperature control system (12), well heater overtemperature prote control system (13) and test period to stop automatic stop control system (14) in the controller (10).
7, according to the described diesel cleaning checkout equipment of claim 5, it is characterized in that above-mentioned sediment trap (1), well heater (2), waste oil container (8) are contained in the protective cover (9), the top of protective cover (9) is equipped with observes transparency window (15).
8, according to each described checkout equipment of claim 5 to 7, it is characterized in that above-mentioned sediment trap (1) is shape or spill low between the senior middle school of both sides along the surface of diesel oil flow direction, the xsect of the sediment trap vertical with the diesel oil flow direction (1) is rectangle, triangular form, camber, semi-circular or ladder type; Sediment trap (1) the bottom side-looking section consistent with the diesel oil flow direction is camber, hypotenuse type, sloping type, watt shape or olecranon type.
9,, it is characterized in that above-mentioned volume pump (7) adopts syringe pump, peristaltic pump, constant-flux pump or infusion pump according to each described checkout equipment of claim 5 to 7.
10,, it is characterized in that above-mentioned reciprocal travel mechanism (4) is for realizing tooth bar mode, cylinder tie rod mode, screw mandrel mode or the connecting rod of eccentric wheel mode of linear reciprocating motion according to each described checkout equipment of claim 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100961226A CN100510691C (en) | 2005-09-30 | 2005-09-30 | Diesel-oil clean performance inspection and inspector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100961226A CN100510691C (en) | 2005-09-30 | 2005-09-30 | Diesel-oil clean performance inspection and inspector thereof |
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| CN1940524A CN1940524A (en) | 2007-04-04 |
| CN100510691C true CN100510691C (en) | 2009-07-08 |
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| CNB2005100961226A Expired - Fee Related CN100510691C (en) | 2005-09-30 | 2005-09-30 | Diesel-oil clean performance inspection and inspector thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147403A (en) * | 2010-12-26 | 2011-08-10 | 中国第一汽车集团公司 | Lubricating oil bench test method for diesel engine |
| CN104034623B (en) * | 2013-03-06 | 2016-08-10 | 中国石油天然气股份有限公司 | The test method of a kind of ship use intermediate speed machine lubricating oil detergency and equipment |
| CN103675228B (en) * | 2013-12-23 | 2015-08-12 | 山西华顿实业有限公司 | A kind of Comprehensive performance assessment method of alcohols alternative fuel |
| CN105020077A (en) * | 2015-07-24 | 2015-11-04 | 天津海泰科科技有限公司 | Coking simulation test device and method for diesel engine oil nozzle |
| CN107478775A (en) * | 2017-08-04 | 2017-12-15 | 天津悦泰石化科技有限公司 | A kind of detection method of petrol engine air admission valve deposits cleaning rate |
| CN107525912A (en) * | 2017-09-22 | 2017-12-29 | 苏州坤阳机械科技有限公司 | Comprehensive assay method of pollutant in a kind of diesel oil |
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2005
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| GB19592-2004 车用汽油清净剂. 1-9. 2004 |
| GB19592-2004 车用汽油清净剂. 1-9. 2004 * |
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| 热管氧化法评定柴油机油清净性的研究. 陈晓伯，谢继善，彭春元，何志明，王建民，陈祥科，杨政.第一届全国青年摩擦学学术会议论文集. 1991 |
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