CN108088683A - Diesel engine spray nozzle clogging simulation experiment method and equipment - Google Patents
Diesel engine spray nozzle clogging simulation experiment method and equipment Download PDFInfo
- Publication number
- CN108088683A CN108088683A CN201810066853.3A CN201810066853A CN108088683A CN 108088683 A CN108088683 A CN 108088683A CN 201810066853 A CN201810066853 A CN 201810066853A CN 108088683 A CN108088683 A CN 108088683A
- Authority
- CN
- China
- Prior art keywords
- metal
- temperature
- metal capillary
- capillary
- diesel oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004088 simulation Methods 0.000 title claims abstract description 16
- 239000007921 spray Substances 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 109
- 229910052751 metal Inorganic materials 0.000 claims abstract description 109
- 239000002283 diesel fuel Substances 0.000 claims abstract description 57
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000002474 experimental method Methods 0.000 claims abstract description 22
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 4
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 4
- 240000005373 Panax quinquefolius Species 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 210000005239 tubule Anatomy 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010998 test method Methods 0.000 abstract description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 239000003599 detergent Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- HSNWZBCBUUSSQD-UHFFFAOYSA-N amyl nitrate Chemical compound CCCCCO[N+]([O-])=O HSNWZBCBUUSSQD-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to diesel engine spray nozzle clogging simulation experiment method and equipment, this method comprises the following steps：(1) metal capillary is passed through into metal bath；(2) it is 40 DEG C to 60 DEG C by the temperature setting of metal bath, keeps constant temperature, be evacuated with constant suction pressure to metal capillary, flow value before measurement experiment；(3) metal bath is heated to test temperature and keeps constant temperature；It (4), intermittently will be in micro diesel oil injection metal capillary with certain frequency under the promotion of inert gas；(5) after the test, metal bath is cooled to the temperature identical with step (2), is evacuated with the suction pressure identical with step (2) to metal capillary, flow value after measurement experiment；(6) by flow value before experiment subtract experiment after flow value, gained difference again divided by experiment before flow value, obtain plugging rate of the diesel oil in metal capillary.The equipment is used to implement this method.The test method and equipment of the present invention is similar to diesel engine nozzle operation principle, suitable for more than V rank diesel oil of national standard.
Description
Technical field
The invention belongs to the technical fields of petroleum chemicals performance detection, particularly a kind of analog detection side of diesel cleaning
Method and equipment.
Background technology
Increase with the quantity of China's motor vehicle, haze increasingly causes the pass of people caused by automotive emission
Note, especially diesel vehicle easily generates carbon deposit in the case where maintenance is not good in nozzle, and engine nozzle is caused to block, and makes bavin
Mist of oilization is bad, oil consumption rising, power dropping, granular material discharged increase and over-emitting black exhaust.In order to solve this problem, it is general both at home and abroad
It is that diesel oil detergent is added in diesel oil all over the method used, nozzle is made to lack generation carbon deposit or does not generate carbon deposit, reduces diesel oil vapour
The pollution that vehicle is brought to environment.It is existing evaluation diesel oil detergent method be：Using European engine rig test equipment and side
Method (XUD-9 engine pedestals), this method evaluate the peace and quiet effect of diesel oil detergent by testing the cleannes of diesel fuel nozzle,
The country only has 3 R＆D institutions belonging to China Petroleum, Sinopec and Chinese Ministry of Environmental Protection to have this rack, when being detected due to engine pedestal
Between it is long, testing expenses are high, and bench test equipment needs special workshop, many ancillary equipments and professional technician's manipulation, nothing
Method popularization uses, and can only do the access detection that diesel oil detergent product enters market.In terms of current situation, government regulator
A kind of fast simple evaluation method of diesel oil detergent is required for production person, preferable method is can to detect commercially available bavin
The detergency of oil, direct management and control gas station diesel cleaning index.
Before making the present invention, Zhang Demin, Li Rong, Zhang Jia invented in 2005 it is a kind of " diesel cleaning detection method and
Its equipment ", the Patent No. ZL200510096122.6 of the invention, and equipment also puts into batch production, some diesel cleanings
Agent is researched and developed and the detergency of diesel oil detergent detects with it always in production division.But country carried out IV diesel oil of state III and state in 2013
After standard, diesel oil deposit does not subtract after 50% diesel oil of market sale addition detersive occurs using this method and equipment detection
Anti- the phenomenon that increasing, this is with XUD-9 engine rig tests the result is that opposite.There is the probability higher of this phenomenon in state's V diesel oil.
To find out its cause, before 2013, what domestic derv fuel performed is II standard of state, and the index of Cetane number is 45, then July 1
Start III standard of state of enforcement after day, Cetane number index is increased to 49, and index has larger rising, the work of part oil plant
The requirement of Cetane number is not achieved in skill and diesel component, therefore starts to add cetane number improver, country in 2015 to diesel oil
V diesel oil standard of state of enforcement, Cetane number are promoted to 51, and the derv fuel of substantially each oil plant production is all with the addition of 16
Alkane value modifier.Original invention operation principle is " inclined plate " coking mode, and experiment diesel oil is along being heated during experiment
Inclined plate flows downward, and completely open cetane number improver belongs to strong oxidizer in air, meeting after being contacted with air and hot plate
Deposit at double is generated, this phenomenon can be verified by tests below：The diesel oil of state II in 2013 is selected primary
Tested in bright equipment, addition cetane number improver (amyl nitrate) and be not added with cetane number improver diesel oil generation sink
Coking power (%) comparison of product object is as shown in table 1 below.
Table 1 uses the result of the test of ZL200510096122.6 method and apparatus
As it can be seen from table 1 after 2% cetane number improver of addition, blank diesel oil deposit increases 3.8 times, contains
The diesel oil deposit of detersive increases 6.6 times, therefore is present with the phenomenon that diesel oil deposit not anti-reflection containing detersive increases.
Above-mentioned experiment demonstrates primary bright method and apparatus and has been not applied for diesel oil of the evaluation containing cetane number improver.Cause
This needs to develop new analogy method and equipment to adapt to the diesel oil containing cetane number improver, completion more than V rank of national standard
The detergency Simulation evaluation work of diesel oil.
The content of the invention
The main object of the present invention be to provide it is a kind of it is similar to diesel engine nozzle operation principle, suitable for national standard V
The simulation experiment method of more than rank diesel oil.
It is a further object of the present invention to provide a kind of equipment for realizing this method.
In order to realize above-mentioned main purpose, the technical solution adopted by the present invention is to provide a kind of diesel engine spray nozzle clogging
Simulation experiment method comprises the following steps：
(1) metal capillary and metal bath are got ready, metal capillary passes through metal bath；
(2) it is 40 DEG C to 60 DEG C by the temperature setting of metal bath, constant temperature is kept, with constant suction pressure to metal capillary
Pumping measures the air mass flow in metal capillary, obtains testing preceding flow value；
(3) metal bath is heated to test temperature and keeps constant temperature；
It (4), intermittently will be in micro diesel oil injection metal capillary with certain frequency under the promotion of inert gas；
Diesel oil film in metal capillary generates deposit under test temperature；
(5) after the test, metal bath is cooled to the temperature identical with step (2), with the pumping identical with step (2)
Pressure is evacuated to metal capillary, measures the air mass flow in metal capillary, flow value after being tested；
(6) by flow value before experiment subtract experiment after flow value, gained difference again divided by experiment before flow value, obtain diesel oil
In the plugging rate of metal capillary.Plugging rate can be represented in the form of percentage.
Further technical solution is, metal capillary from the inlet to the outlet first 2/3 section is endoporus, rear 1/3 sector hole footpath
Half is reduced, forms pass.
Further technical solution is, in step (3), test temperature is set in temperature gradient；Maximum temperature is arranged on
At pass, maximum temperature is 300 DEG C to 330 DEG C.
Further technical solution is, in step (4), frequency for it is per minute once, each injection rate for 0.13mL extremely
0.2mL, total injection length are 1.5h to 2h.
Further technical solution is, in step (2), temperature is 50 DEG C；Suction pressure is provided by aspiration pump, pumping pressure
Power is -10kPa to -15kPa.Suction pressure is preferably -11kPa.
Further technical solution is, in step (4), dicyclopentadiene is added in diesel oil.
Another object to realize the present invention, the present invention provide a kind of realization above-mentioned diesel engine spray nozzle clogging simulation examination
The equipment of proved recipe method, the equipment include：Metal bath and metal capillary, metal capillary are passed through from metal bath；Air stream measures
Component is measured, air-flow measurement component includes air flow meter, aspiration pump, the first measurement solenoid valve and the second measurement solenoid valve,
First measurement solenoid valve and the second measurement solenoid valve are connected to the both ends of metal capillary, air flow meter and the first measurement
Solenoid valve connects, and aspiration pump is connected with the second measurement solenoid valve；Diesel oil is passed through component, and diesel oil is passed through component and leads to including inert gas
Entrance contains sample bottle and three-way magnetic valve, and three-way magnetic valve is passed through mouth with metal capillary one end, inert gas and contains sample bottle respectively
Connection, inert gas are passed through mouth and are also connected by pipeline with containing sample bottle；Collection assembly, collection assembly include another with metal capillary
The cooler and gs-oil separator of one end connection and the exhaust solenoid valve and air filter being connected with gs-oil separator.
Further technical solution is that equipment further includes：Fast twist-on head, fast twist-on head connection and sealing metal capillary
Both ends；Control device, control device control the temperature of metal bath.
Further technical solution is that metal capillary overall length 200mm, first 2/3 section is endoporus, and rear 1/3 sector hole footpath reduces
Half forms pass；Metal capillary is formed by way of punching, be embedded in, squeeze.
Further technical solution is that air flow meter accuracy of reading is more than 4-digit number.
Further technical solution is that air filter is active carbon filter.
Further technical solution is that metal bath is in series by multiple sub- metal baths；It is left between each sub- metal bath
Gap, and have each independent heater, temperature is controlled by control device respectively；The temperature of multiple sub- metal baths is from metal capillary
Tube inlet is incremented by successively to exit, and temperature gradient is formed on metal capillary.
Further technical solution is that cooler is using water cooling, air-cooled or by rapid thermal conduction property material heat transfer
The mode of cooling is cooled down.
Further technical solution is that inert gas is passed through mouth and is connected with nitrogen offer device.
Further technical solution is to contain and the diesel oil added with dicyclopentadiene is placed in sample bottle.
The present invention can obtain following advantageous effect：
The diesel fuel nozzle of the offer of the present invention blocks simulation experiment method and equipment, is obtained with XUD-9 bench tests preferable
Correlation.Since diesel oil is in experimental facilities, whole to be carried by inert gases such as nitrogen, ingress of air, does not generate oxidation,
It is identical with the working environment in engine nozzle, so as to suitable for evaluate the diesel cleaning containing cetane number improver
Property, and test repeatability is high.In view of the rapidity of simulation test, can be added in the diesel samples of simulation test bicyclic
Pentadiene makes test period shorten five times as green coke agent.
The present invention uses the metal capillary of reducing, the preferably shape of simulated engine nozzle chamber and spout, improves
With engine rig test result positive correlation.Enter the metal of this reducing by nitrogen carrier band diesel oil in closed system
In capillary, which is heated in the metal bath controlled with temperature gradient.It is heavy that diesel oil is formed at metal capillary reducing
Product object, deposit change the pass latus rectum at capillary reducing so that the air mass flow that capillary is measured after experiment generates damage
It loses.
Description of the drawings
Fig. 1 is the structure diagram that diesel nozzeles block simulated test facility.
In figure：1- metal baths；2- metal capillaries；3- contains sample bottle；4- three-way magnetic valves；The fast twist-on heads of 5-；6- control dresses
It puts；7- inert gas entrances；8- first measures solenoid valve；9- second measures solenoid valve；10- aspiration pumps；11- air flow meters；
12- waste liquid bottles；13- exhaust solenoid valves；14- active carbon filters；15- coolers.
Specific embodiment
Below with reference to attached drawing and specific embodiment to diesel engine spray nozzle clogging simulation test side of the invention
Method and equipment are described in detail.
As shown in Figure 1, in the embodiment of diesel engine spray nozzle clogging simulated test facility provided by the invention, metal kernel
Tubule 2 is passed through from metal bath 1, and 2 both ends of metal capillary are respectively the entrance and exit of metal capillary 2, entrance and exit
By first 5 connection of fast twist-on, sealing, the temperature of metal bath 1 is controlled by control device 6.
In the present embodiment, 2 overall length 200mm of metal capillary, first 2/3 section is endoporus of the aperture for 1mm or so, rear 1/
3 sector hole footpaths reduce half and form pass, and endoporus is larger in inlet aperture, and exit aperture is smaller, there is apparent pass, can be with
It is formed by way of drilling, be embedded in, squeeze.
Metal bath 1 is in series by several blocks of sub- metal baths, and gap is left between each sub- metal bath, and is had each solely
Vertical heater, they control temperature respectively by the thermostat of control device 6, and sub- metal bath institute's controlling temperature is from metal capillary 2
Entrance is incremented by successively to exporting, and temperature gradient is formed on metal capillary 2.
In the present embodiment, the air-flow measurement of metal capillary 2 is by being connected to 2 both ends of metal capillary
First measurement solenoid valve 8, second measures solenoid valve 9 to control, and the first measurement solenoid valve 8 connects aspiration pump 10, the second measurement
Solenoid valve 9 connects air flow meter 11.
In the present embodiment, metal bath 1 and whole solenoid valves are all connected with control device 6, and control device 6 is respectively to metal
The temperature and each solenoid valve break-make of bath 1 are controlled.
When being tested, the diesel oil contained in sample bottle 3 injects gold by inert gas entrance 7 by nitrogen through three-way magnetic valve 4
Belong to capillary 2, and nitrogen is pushed out by metal capillary 2 by inert gas entrance 7 by nitrogen, nitrogen can also as carrier gas
It is substituted using other protective gas.
The diesel oil sample discharged through high-temperature metal capillary 2 mixes shape, through 15 cooling down of cooler in high-temperature oil gas
Afterwards, liquid portion stays in waste liquid bottle 12, and gas part empties after exhaust solenoid valve 13 and active carbon filter 14 purify.Cooling
Water cooling, air-cooled or cooled down by way of the material natural cooling of rapid thermal conduction property may be employed in device.
Before the test with after experiment, the flow of metal capillary 2 is measured, needs to close exhaust solenoid valve 13, threeway at this time
Solenoid valve 4 opens the first measurement solenoid valve 8 and second and measures solenoid valve 9, starts aspiration pump 10, constant suction pressure, air warp
Air flow meter 11 flows through metal capillary 2, passes through air flow meter 11, the flow value of reading metal capillary 2.Air mass flow
Counting 11 accuracies of reading must have four numbers above to show.Vacuum pump or other types aspiration pump may be employed in aspiration pump 10.
Diesel oil plugging rate experimental test is carried out using the equipment of the present embodiment, specific steps include：
1st, equipment power switch is opened, 1 automatic constant-temperature of metal bath is to 50 DEG C.
2nd, take metal capillary 2, using the big one end in aperture as entrance, the small one end in aperture as outlet, respectively with gold
Belong to the entrance and exit cooperation of bath 1；2 both ends of metal capillary use first 5 connection of fast twist-on, sealing.
3rd, 1 is added in sample bottle 3 is contained：The dimethylbenzene of 2 ratios and normal heptane mixing liquid 30mL, bottle cap is tightened, is rocked
Sample bottle 3 is contained, bottle inner wall is cleaned, opens washing function switch, nitrogen is by the road and golden by the mixing liquid contained in sample bottle 3
Belong to capillary 2 to be discharged into waste liquid bottle 12, and continuing 5 minutes nitrogen blowings dries 2 inner cavity of metal capillary.
4th, turn-on flow rate measurement switch, aspiration pump 10 are evacuated measuring system, adjustment suction pressure to -11kPa, and record is empty
The flow value that air-flow gauge is shown, that is, flow value before testing.
5th, measure 20mL diesel oil (or diesel oil containing detersive) and pour into Sheng sample bottle 3, add in 1mL dicyclopentadienes, screw on
Bottle cap rocks uniformly.
6th, starting switch is pressed, metal bath 1 starts to warm up, and temperature reaches 300 DEG C extremely at 2 pass of metal capillary
330 DEG C, keep constant temperature.Simultaneously under the pressure of nitrogen, the diesel oil in sample bottle 3 is contained under the control of three-way magnetic valve 4, to metal
Capillary 2 injects micro diesel oil with the frequency of 1 time per minute, and the amount injected every time is 0.13mL to 0.2mL, and by nitrogen
It carries and passes through metal capillary 2, the diesel oil film in metal capillary 2 generates deposit under high temperature action.Repeat this step
Rapid 1.5h terminates to 2h, and by timer control, and equipment is automatically into temperature-fall period.
7th, when temperature drops to 50 DEG C and constant temperature, above step 4 is repeated, measures flow value after experiment.
8th, plugging rate is calculated：With flow value before experiment subtract experiment after flow value, gained difference again divided by experiment before stream
Magnitude, obtained number is multiplied by with 100%, you can obtains the plugging rate of metal capillary；It is calculated by with following formula 1：
D%=(f1–f2)/f1* 100% (formula 1)
In formula：f1Be experiment before flow value, unit mL；
f2Be experiment after flow value, unit mL；
D is plugging rate, unit %.
The plugging rate (D) tested by diesel oil plugging rate test method, plugging rate is smaller, and diesel samples detergency is better.
Above-mentioned test method meets same operator, in same laboratory using same equipment, repeats to survey two results
With the precision of arithmetic mean of instantaneous value difference≤± 10%.
Using the diesel samples used in table 1, diesel engine spray nozzle clogging simulated test facility and examination with the present invention
Proved recipe method is tested, and the plugging rate (%) measured the results are shown in Table 2.
Table 2 is using the method for the present invention and the result of the test of equipment
It is learnt from the test result of table 2：It is not added with 2% cetane number improver diesel oil of cetane number improver diesel oil and addition
After detersive is added in, significantly reducing all occurs in plugging rate, with engine rig test result positive correlation.It is as it can be seen that of the invention
It solves the problems, such as existing in the prior art.
It finally it is emphasized that these are only the preferred embodiment of the present invention, is not intended to limit the invention, for this
For the technical staff in field, the present invention can have various change and change, within the spirit and principles of the invention, done
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (10)
1. diesel engine spray nozzle clogging simulation experiment method, it is characterised in that comprise the following steps：
(1) metal capillary and metal bath are got ready, the metal capillary passes through the metal bath；
(2) it is 40 DEG C to 60 DEG C by the temperature setting of the metal bath, constant temperature is kept, with constant suction pressure to the metal kernel
Tubule is evacuated, and is measured the air mass flow in the metal capillary, is obtained testing preceding flow value；
(3) metal bath is heated to test temperature and keeps constant temperature；
(4) under the promotion of inert gas, intermittently micro diesel oil is injected in the metal capillary with certain frequency；
Diesel oil film in the metal capillary generates deposit under test temperature；
(5) after the test, the metal bath is cooled to the temperature identical with step (2), with the pumping identical with step (2)
Pressure is evacuated to the metal capillary, measures the air mass flow in metal capillary, flow value after being tested；
(6) flow value before the experiment is subtracted into flow value after the experiment, gained difference flow value again divided by before the experiment,
Obtain plugging rate of the diesel oil in the metal capillary.
2. diesel engine spray nozzle clogging simulation experiment method according to claim 1, it is characterised in that：
The metal capillary from the inlet to the outlet first 2/3 section is endoporus, and rear 1/3 sector hole footpath reduces half, forms pass；
In step (3), the test temperature is set in temperature gradient；Maximum temperature is arranged at pass, maximum temperature 300
DEG C to 330 DEG C.
3. diesel engine spray nozzle clogging simulation experiment method according to claim 1 or 2, it is characterised in that：
In step (4), the frequency for it is per minute once, each injection rate is 0.13mL to 0.2mL, and total injection length is
1.5h to 2h.
4. diesel engine spray nozzle clogging simulation experiment method according to claim 1 or 2, it is characterised in that：
In step (2), the temperature is 50 DEG C；The suction pressure is provided by aspiration pump, and the suction pressure is -10kPa
To -15kPa；
In step (4), dicyclopentadiene is added in the diesel oil.
5. realize the equipment of diesel engine spray nozzle clogging simulation experiment method as described in claim 1, it is characterised in that institute
Stating equipment includes：
Metal bath and metal capillary, the metal capillary are passed through from the metal bath；
Air-flow measurement component, the air-flow measurement component include air flow meter, aspiration pump, the first measurement solenoid valve
With the second measurement solenoid valve, the first measurement solenoid valve and the second measurement solenoid valve are connected to metal capillary
Both ends, the air flow meter are connected with the described first measurement solenoid valve, and the aspiration pump connects with the described second measurement solenoid valve
It connects；
Diesel oil is passed through component, and the diesel oil is passed through component and is passed through mouth including inert gas, contains sample bottle and three-way magnetic valve, and described three
Three-way electromagnetic valve is passed through mouth with the metal capillary entrance, the inert gas respectively and the Sheng sample bottle is connected, the inertia
Gas is passed through mouth and is also connected by pipeline with the Sheng sample bottle；
Collection assembly, the collection assembly include the cooler and gs-oil separator with metal capillary outlet connection, with
And the exhaust solenoid valve and air filter being connected with the gs-oil separator.
6. equipment according to claim 5, it is characterised in that the equipment further includes：
Fast twist-on head, the fast twist-on head connect and seal the both ends of the metal capillary；
Control device, the control device control the temperature of the metal bath.
7. equipment according to claim 5 or 6, it is characterised in that：
The metal capillary overall length 200mm, first 2/3 section is endoporus, and rear 1/3 sector hole footpath reduces half, forms pass；The gold
Belong to capillary to be formed by way of punching, be embedded in, squeeze；
The air flow meter accuracy of reading is more than 4-digit number；
The filter is active carbon filter.
8. equipment according to claim 5 or 6, it is characterised in that：
The metal bath is in series by multiple sub- metal baths；Gap is left between each sub- metal bath, and is had each independent
Heater controls temperature respectively by control device；The temperature of multiple sub- metal baths is from the metal capillary entrance to exit
It is incremented by successively, form temperature gradient on the metal capillary.
9. equipment according to claim 5 or 6, it is characterised in that：
The cooler is using water cooling, air-cooled or cooled down by way of the material heat transfer cooling of rapid thermal conduction property.
10. equipment according to claim 5 or 6, it is characterised in that：
The inert gas is passed through mouth and is connected with nitrogen offer device；
The diesel oil added with dicyclopentadiene is placed in the Sheng sample bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066853.3A CN108088683B (en) | 2018-01-24 | 2018-01-24 | Diesel engine nozzle blockage simulation test method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066853.3A CN108088683B (en) | 2018-01-24 | 2018-01-24 | Diesel engine nozzle blockage simulation test method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108088683A true CN108088683A (en) | 2018-05-29 |
| CN108088683B CN108088683B (en) | 2024-03-08 |
Family
ID=62181723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810066853.3A Active CN108088683B (en) | 2018-01-24 | 2018-01-24 | Diesel engine nozzle blockage simulation test method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108088683B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540528A (en) * | 2018-11-02 | 2019-03-29 | 中国航空工业集团公司北京航空精密机械研究所 | One kind being used for engine nozzle on-line performance test device |
| CN110848003A (en) * | 2019-11-15 | 2020-02-28 | 中国重汽集团济南动力有限公司 | Air-assisted SCR urea consumption low-fault simulation device and method |
| CN113369225A (en) * | 2021-06-11 | 2021-09-10 | 华能曲阜热电有限公司 | Online purging system of ammonia injection flowmeter and control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670561A (en) * | 1970-01-30 | 1972-06-20 | Alf Hundere | Apparatus for determining the thermal stability of fluids |
| US4176544A (en) * | 1978-05-04 | 1979-12-04 | The British Petroleum Company Limited | Method for determining fouling |
| CN2075781U (en) * | 1990-08-24 | 1991-04-24 | 中国石油化工总公司石油化工科学研究院 | Tester for evaluating the cleaning property of ic engine |
| US5101658A (en) * | 1990-11-26 | 1992-04-07 | Alcor, Inc. | Apparatus for determining the thermal stability of fluids |
| FR2787580A1 (en) * | 1998-12-22 | 2000-06-23 | Inst Francais Du Petrole | Determining the tendency of a petrol with or without additives to form deposits in an engine involves injecting petrol across a tube held at a constant temperature and determining the amount of deposit formed by weighing the tube |
| US20030177768A1 (en) * | 2002-03-22 | 2003-09-25 | Pellizzari Roberto O. | Method and apparatus for generating power by combustion of vaporized 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 |
| CN105716988A (en) * | 2014-12-05 | 2016-06-29 | 中国石油天然气股份有限公司 | Determination method and tubular device for rapid determination of coking trend of heated inferior heavy oil |
| CN207923455U (en) * | 2018-01-24 | 2018-09-28 | 珠海莱科力环保科技有限公司 | Equipment for diesel engine spray nozzle clogging simulation test |
-
2018
- 2018-01-24 CN CN201810066853.3A patent/CN108088683B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670561A (en) * | 1970-01-30 | 1972-06-20 | Alf Hundere | Apparatus for determining the thermal stability of fluids |
| US4176544A (en) * | 1978-05-04 | 1979-12-04 | The British Petroleum Company Limited | Method for determining fouling |
| CN2075781U (en) * | 1990-08-24 | 1991-04-24 | 中国石油化工总公司石油化工科学研究院 | Tester for evaluating the cleaning property of ic engine |
| US5101658A (en) * | 1990-11-26 | 1992-04-07 | Alcor, Inc. | Apparatus for determining the thermal stability of fluids |
| FR2787580A1 (en) * | 1998-12-22 | 2000-06-23 | Inst Francais Du Petrole | Determining the tendency of a petrol with or without additives to form deposits in an engine involves injecting petrol across a tube held at a constant temperature and determining the amount of deposit formed by weighing the tube |
| US6566142B1 (en) * | 1998-12-22 | 2003-05-20 | Institut Francais Du Petrole | Laboratory test for assessing the tendency of a gasoline, optionally containing an additive, to cause deposits while the engine is running |
| US20030177768A1 (en) * | 2002-03-22 | 2003-09-25 | Pellizzari Roberto O. | Method and apparatus for generating power by combustion of vaporized fuel |
| CN105716988A (en) * | 2014-12-05 | 2016-06-29 | 中国石油天然气股份有限公司 | Determination method and tubular device for rapid determination of coking trend of heated inferior heavy oil |
| 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 |
| CN207923455U (en) * | 2018-01-24 | 2018-09-28 | 珠海莱科力环保科技有限公司 | Equipment for diesel engine spray nozzle clogging simulation test |
Non-Patent Citations (1)
| Title |
|---|
| 张德民 等: "板式成焦器的改进及用于评定柴油机油清净性的研究", 《润滑油》, vol. 13, no. 3, pages 39 - 43 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540528A (en) * | 2018-11-02 | 2019-03-29 | 中国航空工业集团公司北京航空精密机械研究所 | One kind being used for engine nozzle on-line performance test device |
| CN110848003A (en) * | 2019-11-15 | 2020-02-28 | 中国重汽集团济南动力有限公司 | Air-assisted SCR urea consumption low-fault simulation device and method |
| CN113369225A (en) * | 2021-06-11 | 2021-09-10 | 华能曲阜热电有限公司 | Online purging system of ammonia injection flowmeter and control method |
| CN113369225B (en) * | 2021-06-11 | 2022-11-08 | 华能曲阜热电有限公司 | Online purging system of ammonia injection flowmeter and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108088683B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108088683A (en) | Diesel engine spray nozzle clogging simulation experiment method and equipment | |
| CN102401834B (en) | Multi-channel on-line sampling and sample introducing method for high-temperature high-thickness liquid material | |
| CN201464446U (en) | Packing performance testing device for full-automatic cooling tower | |
| CN102495013B (en) | A kind of water quality in-line digestion and photometric detection device | |
| CN104296942A (en) | Leak detection processing method for vacuum system of thermal generating unit | |
| CN106596386B (en) | A kind of simulation air cooling tubes condenser metal vehicle repair major corrosion testing apparatus and method | |
| CN207923455U (en) | Equipment for diesel engine spray nozzle clogging simulation test | |
| CN101393110B (en) | Phosphorus sulfur multi-component high temperature corrosion test system and test methods of yellow phosphorus end gas | |
| CN205484299U (en) | Quality of water on -line measuring device | |
| CN109448876A (en) | A kind of descending branch peace note process velocity field measurement device based on compensation of refractive index | |
| CN103412075B (en) | Full-automatic oil-chromatography sample feeding device for transformer and operation method | |
| CN109520993A (en) | Foodstuff surface residue micro-fluidic detection device and method based on Raman spectrum | |
| CN105301059A (en) | Device and method for measuring gas-liquid cyclone liquid-phase standing time distribution | |
| CN105842401A (en) | No-leakage rapid environment-friendly flue gas pretreater | |
| CN204945157U (en) | A kind of full-automatic gas-liquid multi-usage injector | |
| CN216350530U (en) | Rapid thermal cracking RoHS detector gas circuit operation structure | |
| CN206656945U (en) | A kind of test system for the cleaner filter efficiency for simulating vehicle-mounted operating mode | |
| CN206489175U (en) | A kind of auto injection detection means | |
| CN207300942U (en) | A kind of testing device for heat transferring performance of flat-plate type micro heat pipe | |
| CN207540857U (en) | Multicomponent volatile organic matter gravimetric method gas distribution device | |
| CN108333380A (en) | A kind of automatic sampling apparatus and its automatic sampling method | |
| CN208482485U (en) | The real-time collecting device of gaseous substance during a kind of confined reaction | |
| CN204924941U (en) | Detergent quality analysis miscellaneous pretreatment systems that outgases with constant temperature | |
| CN108181206A (en) | Slurries diffusion test set and test method in a kind of dynamic water | |
| CN113686415A (en) | Flow measurement standard device for simulating practical application scene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |