CN108131202A - A kind of fanjet lubricating system exerciser - Google Patents
A kind of fanjet lubricating system exerciser Download PDFInfo
- Publication number
- CN108131202A CN108131202A CN201711154687.4A CN201711154687A CN108131202A CN 108131202 A CN108131202 A CN 108131202A CN 201711154687 A CN201711154687 A CN 201711154687A CN 108131202 A CN108131202 A CN 108131202A
- Authority
- CN
- China
- Prior art keywords
- oil
- chamber
- lubricating
- pump
- lubricating 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/81—Modelling or simulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of fanjet lubricating system exerciser, including：Oil tank, oil-containing gas separating device, and it is connected with vacuum pump, lubricating oil booster pump thereon；The fore bearing chamber and rear bearing bore being connected, ante-chamber lubricating oil oil inlet pipe is connected on fore bearing chamber, back cavity lubricating oil oil inlet pipe is connected on bearing bore afterwards, ante-chamber lubricating oil oil inlet pipe connects lubricating oil booster pump with back cavity lubricating oil oil inlet pipe, and ante-chamber lubricating oil oil inlet pipe and back cavity lubricating oil oil inlet pipe and the connecting line of lubricating oil booster pump are equipped with flowmeter；Ante-chamber scavenge oil pump is connected on fore bearing chamber, connects back cavity scavenge oil pump on rear bearing bore, ante-chamber scavenge oil pump connects oil tank with back cavity scavenge oil pump.The present invention can not individually carry out the simulation test of engine lubrication system with overall test, and the performance data of the performance data and each element under the variant working condition of lubricating system is obtained with cheap expense.
Description
Technical field
The invention belongs to aero-engine lubricating system technical fields, are related to a kind of fanjet lubricating system experiment
Device.
Background technology
The effect of fanjet lubricating system is the working surface lubrication delivery to bearing and gear, is taken away since high speed turns
The heat that the dynamic lower frictional heat generated and high ambient temperatures part are brought, to maintain the normal temperature condition of bearing and gear, and
Continuous oil film is formed between the raceway and roller of bearing, between the flank of tooth that is meshed, so as to form the effect of hydrodynamic lubrication, is reduced
The abrasion of these working faces, and prevent the corrosion of part.
The performance parameter of the lubricating system of domestic small-sized fanjet usually passes through some member in lubricating system at present
The routine tests of part or overall test obtain.It has the following disadvantages：
(1) individually can not to simulate the element to the certification test of some element of lubricating system true in lubricating system
Working condition, therefore and truth deviation it is larger；
(2) it is less for the performance study acquisition data of lubricating system since overall test expends costliness, in overall test
Since lubricating system is in closed state, the flow condition of fluid in real system can not be observed.
Invention content
(1) goal of the invention
The purpose of the present invention is：In order to meet the needs of small-sized fanjet bearing, gear lubrication, a kind of lubrication is proposed
System tester realizes the operation principle of simulated engine lubricating system, obtains lubricating system under different height environmental condition
Performance further realizes engine lubrication system high-altitude Journal of Sex Research, and then instructs the optimization design of lubricating system.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of fanjet lubricating system exerciser, including：
Oil tank 1, oil-containing gas separating device, and it is connected with vacuum pump 27, lubricating oil booster pump 3 thereon；
The fore bearing chamber 11 and rear bearing bore 12 being connected, connection ante-chamber lubricating oil oil inlet pipe 7, rear bearing on fore bearing chamber 11
Back cavity lubricating oil oil inlet pipe 8 is connected on chamber 12, ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8 connect lubricating oil booster pump 3, and
Ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8 and the connecting line of lubricating oil booster pump 3 are equipped with flowmeter 6；Fore bearing chamber
Ante-chamber scavenge oil pump 17 is connected on 11, back cavity scavenge oil pump 18, ante-chamber scavenge oil pump 17 and back cavity scavenge oil pump 18 are connected on rear bearing bore 12
Connect oil tank 1.
Wherein, the 1 top setting ventilation duct 25 of oil tank, ventilation duct 25 connect vacuum pump 27, and on ventilation duct 25
Equipped with hand valve 26；Oil tank pressure-measuring-point 24, oil tank pressure are set on oil tank 1.
Wherein, the lubricating oil booster pump 3 connects oil tank 1 by lubricating oil booster pump oil inlet pipe 2, is pumped out by lubricating oil supercharging
Oil pipe 5 connects ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8, and fuel-displaced in the lubricating oil booster pump that lubricating oil booster pump 3 exports
Booster pump outlet lubricating oil pressure measuring point 4 on pipe 5 is set, measures booster pump outlet lubricating oil pressure.
Wherein, the fore bearing chamber 11 is identical with rear 12 volume of bearing bore, is made of transparent organic glass, two top of chamber
Connection, lower part is separated by partition board 28.
Wherein, the ante-chamber lubricating oil oil inlet pipe 7 stretches into the end set restricting orifice I 9 of fore bearing chamber 11, back cavity lubricating oil into
Oil pipe 8 stretches into the end set restricting orifice II 10 of rear bearing bore 12.
Wherein, the fore bearing chamber 11 and the 12 top setting of rear bearing bore connect open to atmosphere pipeline, and hand is set on the pipeline
Valve 13.
Wherein, bearing bore pressure-measuring-point 14 is additionally provided on the fore bearing chamber 11 and rear bearing bore 12, for measuring axis
Hold cavity pressure.
Wherein, the ante-chamber scavenge oil pump 17 connects fore bearing chamber 11 by ante-chamber oil return pipe 15, and back cavity scavenge oil pump 18 passes through
Bearing bore 12 after back cavity oil return pipe 16 connects.
Wherein, the ante-chamber scavenge oil pump 17 and back cavity scavenge oil pump 18 connect oil tank 1, oil return by oil return oil pump outlet line 19
Oil return pump discharge lubricating oil pressure measuring point 20 is set on oil pump outlet line 19, for measuring oil return pump discharge lubricating oil pressure.
Wherein, the fore bearing chamber 11 and 12 top of rear bearing bore connect oil tank deflation list by bearing bore ventilation duct 21
To valve 22, oil tank deflation check valve 22 connects 1 top of oil tank by oil tank ventilation duct 23.
(3) advantageous effect
The fanjet lubricating system exerciser that above-mentioned technical proposal is provided, can not with overall test and individually into
The simulation test of row engine lubrication system obtains the performance data under the variant working condition of lubricating system with cheap expense
And the performance data of each element；Entire lubricating system makes transparent configuration, can observe the true of oil gas in lubricating system in real time
Real mobility status.
Description of the drawings
Fig. 1 is lubricating system exerciser principle schematic of the embodiment of the present invention.
In figure, 1. oil tanks；2. lubricating oil booster pump oil inlet pipe；3. lubricating oil booster pump；4. booster pump outlet lubricating oil pressure is surveyed
Point；5. lubricating oil is pressurized oil pump outlet line；6. flowmeter；7. ante-chamber lubricating oil oil inlet pipe；8. back cavity lubricating oil oil inlet pipe；9. restricting orifice I；
10. restricting orifice II；11. fore bearing chamber；Bearing bore after 12.；13. hand valve；14. bearing bore pressure-measuring-point；15. ante-chamber oil return
Pipe；16. back cavity oil return pipe；17. ante-chamber scavenge oil pump；18. back cavity scavenge oil pump；19. oil return oil pump outlet line；20. oil return pump discharge is slided
Oil pressure measuring point；21. bearing bore ventilation duct；22. oil tank deflation check valve；23. oil tank ventilation duct；24. oil tank pressure
Measuring point；25. ventilation duct；26. hand valve；27. vacuum pump；28. partition board.
Specific embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the tool of the present invention
Body embodiment is described in further detail.
With reference to shown in Fig. 1, lubricating system exerciser of the embodiment of the present invention includes：
Oil tank 1, oil-containing gas separating device, and it is connected with vacuum pump 27, lubricating oil booster pump 3 thereon；
The fore bearing chamber 11 and rear bearing bore 12 being connected, connection ante-chamber lubricating oil oil inlet pipe 7, rear bearing on fore bearing chamber 11
Back cavity lubricating oil oil inlet pipe 8 is connected on chamber 12, ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8 connect lubricating oil booster pump 3, and
Ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8 and the connecting line of lubricating oil booster pump 3 are equipped with flowmeter 6；Fore bearing chamber
Ante-chamber scavenge oil pump 17 is connected on 11, back cavity scavenge oil pump 18, ante-chamber scavenge oil pump 17 and back cavity scavenge oil pump 18 are connected on rear bearing bore 12
Connect oil tank 1.
1 top setting ventilation duct 25 of oil tank, ventilation duct 25 connects vacuum pump 27, and hand valve is equipped on ventilation duct 25
26。
Lubricating oil booster pump 3 connects oil tank 1 by lubricating oil booster pump oil inlet pipe 2, and being pressurized oil pump outlet line 5 by lubricating oil connects
Ante-chamber lubricating oil oil inlet pipe 7 and back cavity lubricating oil oil inlet pipe 8, and set on the lubricating oil supercharging oil pump outlet line 5 exported in lubricating oil booster pump 3
Booster pump outlet lubricating oil pressure measuring point 4 measures booster pump outlet lubricating oil pressure.
Oil tank pressure-measuring-point 24, oil tank pressure are set on oil tank 1.
Fore bearing chamber 11 is identical with rear 12 volume of bearing bore, is made of transparent organic glass, the connection of two top of chamber, lower part
It is separated by partition board 28.
Ante-chamber lubricating oil oil inlet pipe 7 stretches into the end set restricting orifice I 9 of fore bearing chamber 11, and back cavity lubricating oil oil inlet pipe 8 stretches into
The end set restricting orifice II 10 of bearing bore 12 afterwards.
Fore bearing chamber 11 and the 12 top setting of rear bearing bore connect open to atmosphere pipeline, and hand valve 13 is set on the pipeline.
Bearing bore pressure-measuring-point 14 is additionally provided on fore bearing chamber 11 and rear bearing bore 12, for measuring bearing cavity pressure.
Ante-chamber scavenge oil pump 17 connects fore bearing chamber 11 by ante-chamber oil return pipe 15, and back cavity scavenge oil pump 18 passes through back cavity oil return pipe
Bearing bore 12 after 16 connections.
Ante-chamber scavenge oil pump 17 and back cavity scavenge oil pump 18 connect oil tank 1, oil return oil pump outlet line by oil return oil pump outlet line 19
Oil return pump discharge lubricating oil pressure measuring point 20 is set on 19, for measuring oil return pump discharge lubricating oil pressure.
Fore bearing chamber 11 and 12 top of rear bearing bore connect oil tank deflation check valve 22 by bearing bore ventilation duct 21, sliding
Fuel tank deflation check valve 22 connects 1 top of oil tank by oil tank ventilation duct 23.
The present embodiment exerciser is designed according to the lubrication system architecture of actual engine, specific as follows：
(1) fore bearing chamber 11 and rear bearing bore 12 are identical with the forward and backward bearing cavity volume of real engine, front and rear chamber by every
Plate 28 separates, and using transparent organic glass, convenient for the internal lubricating oil flow regime of observation；
(2) flow proportional of the restricting orifice II 10 of the flow of the restricting orifice I 9 of fore bearing chamber 11 and rear bearing bore 12 with
Actual engine is identical；
(3) 1 structure of oil tank is identical with actual engine, and only inner and outer shell is using transparent organic glass, convenient for seeing
Examine internal lubricating oil flow regime；
(4) each oil feed line, oil return line (5,7,8,15,16,19,21,22 in Fig. 1) are actually managed using on engine
Road；
(5) lubricating oil booster pump and front and rear chamber scavenge oil pump (3,17,18 in Fig. 1) are the oil pump that real engine uses；
(6) pressure for simulating under different height in oil tank is aspirated by vacuum pump 27
Based on this, which can simulate the true lubricating system that engine works under different height, be sent out for obtaining
Motivation high-altitude lubricating system performance, for instructing the optimization design of engine lubrication system.
The course of work of the present embodiment exerciser is：
In experiment, open vacuum pump 27 and adjust the pressure in oil tank 1 to desired value, open lubricating oil booster pump 3, ante-chamber
Scavenge oil pump 17, back cavity scavenge oil pump 18, lubricating oil booster pump 3 will pump out of oil tank 1, be pressurized oil pump outlet line 5 along lubricating oil, flow through
Flowmeter (obtain oil flow), and by front/back cavity oil inlet pipe 7,8 respectively enter fore bearing chamber 11 and after bearing bore 12, it is preceding
Lubricating oil, the back cavity scavenge oil pump 18 that chamber scavenge oil pump 17 is taken out by ante-chamber oil return pipe 15 in ante-chamber are taken out by back cavity oil return pipe 16 in back cavity
Lubricating oil, then converge, pass through oil return oil pump outlet line 19 enter oil tank 1, formed flow circuit, simulated engine real work
Lubricating system under state.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of fanjet lubricating system exerciser, which is characterized in that including：
Oil tank (1), oil-containing gas separating device, and it is connected with vacuum pump (27), lubricating oil booster pump (3) thereon；
The fore bearing chamber (11) and rear bearing bore (12) being connected, connection ante-chamber lubricating oil oil inlet pipe (7) on fore bearing chamber (11), after
Back cavity lubricating oil oil inlet pipe (8) is connected on bearing bore (12), ante-chamber lubricating oil oil inlet pipe (7) and back cavity lubricating oil oil inlet pipe (8) connection are slided
Oily booster pump (3), and on the connecting line of ante-chamber lubricating oil oil inlet pipe (7) and back cavity lubricating oil oil inlet pipe (8) and lubricating oil booster pump (3)
Equipped with flowmeter (6)；Ante-chamber scavenge oil pump (17) is connected on fore bearing chamber (11), back cavity scavenge oil pump is connected on rear bearing bore (12)
(18), ante-chamber scavenge oil pump (17) and back cavity scavenge oil pump (18) connection oil tank (1).
2. fanjet lubricating system exerciser according to claim 1, which is characterized in that oil tank (1) top
Portion's setting ventilation duct (25), ventilation duct (25) connection vacuum pump (27), and hand valve (26) is equipped on ventilation duct (25)；Oil tank
(1) oil tank pressure-measuring-point (24), oil tank pressure are set on.
3. fanjet lubricating system exerciser according to claim 2, which is characterized in that the lubricating oil booster pump
(3) by lubricating oil booster pump oil inlet pipe (2) connect oil tank (1), by lubricating oil be pressurized oil pump outlet line (5) connect ante-chamber lubricating oil into
Oil pipe (7) and back cavity lubricating oil oil inlet pipe (8), and set and increase on the lubricating oil supercharging oil pump outlet line (5) exported in lubricating oil booster pump (3)
Press pump outlet lubricating oil pressure measuring point (4) measures booster pump outlet lubricating oil pressure.
4. fanjet lubricating system exerciser according to claim 3, which is characterized in that the fore bearing chamber (11)
It is identical with rear bearing bore (12) volume, be made of transparent organic glass, two top of chamber connection, lower part by partition board (28) every
It opens.
5. fanjet lubricating system exerciser according to claim 4, which is characterized in that the ante-chamber lubricating oil oil inlet
Pipe (7) stretches into the end set restricting orifice I (9) of fore bearing chamber (11), and back cavity lubricating oil oil inlet pipe (8) stretches into rear bearing bore (12)
End set restricting orifice II (10).
6. fanjet lubricating system exerciser according to claim 4, which is characterized in that the fore bearing chamber (11)
Connect open to atmosphere pipeline with setting at the top of rear bearing bore (12), hand valve (13) is set on the pipeline.
7. fanjet lubricating system exerciser according to claim 4, which is characterized in that the fore bearing chamber (11)
With bearing bore pressure-measuring-point (14) is additionally provided on rear bearing bore (12), for measuring bearing cavity pressure.
8. fanjet lubricating system exerciser according to claim 1, which is characterized in that the ante-chamber scavenge oil pump
(17) fore bearing chamber (11) is connected by ante-chamber oil return pipe (15), after back cavity scavenge oil pump (18) is connected by back cavity oil return pipe (16)
Bearing bore (12).
9. fanjet lubricating system exerciser according to claim 1, which is characterized in that the ante-chamber scavenge oil pump
(17) and back cavity scavenge oil pump (18) connects oil tank (1) by oil return oil pump outlet line (19), and oil return oil pump outlet line is set on (19)
Oil return pump discharge lubricating oil pressure measuring point (20), for measuring oil return pump discharge lubricating oil pressure.
10. fanjet lubricating system exerciser according to claim 4, which is characterized in that the fore bearing chamber
(11) and at the top of rear bearing bore (12) oil tank deflation check valve (22) is connected by bearing bore ventilation duct (21), oil tank is deflated
Check valve (22) is connected by oil tank ventilation duct (23) at the top of oil tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154687.4A CN108131202A (en) | 2017-11-20 | 2017-11-20 | A kind of fanjet lubricating system exerciser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154687.4A CN108131202A (en) | 2017-11-20 | 2017-11-20 | A kind of fanjet lubricating system exerciser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108131202A true CN108131202A (en) | 2018-06-08 |
Family
ID=62389702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711154687.4A Pending CN108131202A (en) | 2017-11-20 | 2017-11-20 | A kind of fanjet lubricating system exerciser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310701A (en) * | 2021-06-15 | 2021-08-27 | 北京航空工程技术研究中心 | Complete machine tester for mechanical system of military turbofan engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793816A (en) * | 2005-12-30 | 2006-06-28 | 合肥工业大学 | Multifunction sliding bearing experimental platform |
| CN203519606U (en) * | 2013-08-02 | 2014-04-02 | 中国石油天然气股份有限公司 | Bearing test stand used for evaluating properties of lubricating oil |
| CN104500460A (en) * | 2014-12-05 | 2015-04-08 | 西安航空动力控制科技有限公司 | Oil-gas separation lubricating oil tank |
| CN105510037A (en) * | 2015-12-03 | 2016-04-20 | 中国航空动力机械研究所 | High altitude test system and method for aircraft engine oil system |
| CN205483572U (en) * | 2016-04-01 | 2016-08-17 | 中科合肥微小型燃气轮机研究院有限责任公司 | Microminiature gas turbine test bench oil feeding system |
-
2017
- 2017-11-20 CN CN201711154687.4A patent/CN108131202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793816A (en) * | 2005-12-30 | 2006-06-28 | 合肥工业大学 | Multifunction sliding bearing experimental platform |
| CN203519606U (en) * | 2013-08-02 | 2014-04-02 | 中国石油天然气股份有限公司 | Bearing test stand used for evaluating properties of lubricating oil |
| CN104500460A (en) * | 2014-12-05 | 2015-04-08 | 西安航空动力控制科技有限公司 | Oil-gas separation lubricating oil tank |
| CN105510037A (en) * | 2015-12-03 | 2016-04-20 | 中国航空动力机械研究所 | High altitude test system and method for aircraft engine oil system |
| CN205483572U (en) * | 2016-04-01 | 2016-08-17 | 中科合肥微小型燃气轮机研究院有限责任公司 | Microminiature gas turbine test bench oil feeding system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310701A (en) * | 2021-06-15 | 2021-08-27 | 北京航空工程技术研究中心 | Complete machine tester for mechanical system of military turbofan engine |
| CN113310701B (en) * | 2021-06-15 | 2022-06-10 | 中国人民解放军93208部队 | Complete machine tester for mechanical system of military turbofan engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101672729B (en) | High-altitude and low-pressure characteristic simulation test station of air compressor in internal-combustion engine | |
| CN105510037B (en) | A kind of altitude pilot system of Aero-Engine Lubrication System and method | |
| CN108918152B (en) | Aeroengine test device | |
| EP2253805A3 (en) | Zero gravity lubrication system | |
| EP1878878A3 (en) | Cooling system for a gas turbine engine | |
| EP2060489A3 (en) | Nacelle flow assembly | |
| EP2071140A3 (en) | On-demand lubrication system and method for improved flow management and containment | |
| CN209569042U (en) | Engine fuel oil system and engine | |
| EP2166195A3 (en) | Fluid reservoir in a gas turbine engine | |
| CN103675001B (en) | The cooling system of a kind of thermal shock and thermal fatigue strength examination | |
| CN108131202A (en) | A kind of fanjet lubricating system exerciser | |
| CN107907335A (en) | A kind of performance testing device of rebreather of engine | |
| CN103076179A (en) | Test device and method for testing engine PCV (pressure controlled ventilation) flow through simulating engine state | |
| CN105115720B (en) | Bi-turbo property test platform with gases at high pressure part flow arrangement | |
| CN203321830U (en) | Rotor piston compressor | |
| CN203962099U (en) | A kind of engine breathing system and motor | |
| CN107725454A (en) | Two-spool compressor testing stand | |
| CN106763658B (en) | Reduction case | |
| CN109264049A (en) | Edible oil filling apparatus | |
| CN202125486U (en) | Test bench device of hydraulic valve | |
| CN204922064U (en) | 120 type air control valve lubricating structure | |
| CN202611779U (en) | Double-seal-ring and double-oil-cavity middle body structure for turbocharger | |
| CN212225934U (en) | Non-contact sealed oil mist separation device of gear box under internal and external pressure difference environment | |
| CN106593968A (en) | Hydraulic pump load control system for one-engine double-pump aero-engine ground test | |
| CN208653784U (en) | Free-standing compressor lubrication system detection platform |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |
|
| WD01 | Invention patent application deemed withdrawn after publication |