CN104405469A - Engine oil pump and engine lubrication system thereof - Google Patents
Engine oil pump and engine lubrication system thereof Download PDFInfo
- Publication number
- CN104405469A CN104405469A CN201410557301.4A CN201410557301A CN104405469A CN 104405469 A CN104405469 A CN 104405469A CN 201410557301 A CN201410557301 A CN 201410557301A CN 104405469 A CN104405469 A CN 104405469A
- Authority
- CN
- China
- Prior art keywords
- pump
- oil
- auxiliary
- engine
- auxiliary pump
- 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
- 239000010705 motor oil Substances 0.000 title claims abstract description 33
- 238000005461 lubrication Methods 0.000 title claims abstract description 28
- 239000003921 oil Substances 0.000 claims abstract description 94
- 239000000945 filler Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 239000010721 machine oil Substances 0.000 description 10
- 239000000314 lubricant Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0238—Rotary pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses an engine oil pump and an engine lubrication system thereof. The engine oil pump comprises a main pump and an auxiliary pump; the main pump and the auxiliary pump are of a sectional structure; the main pump and the auxiliary pump share one driving shaft; the main pump and the auxiliary pump are respectively provided with independent oil inlet and oil outlet. The engine lubrication system comprises an oil pan and an engine lubrication passage, and also comprises an oil collecting container; the oil inlet of the auxiliary pump is communicated with the oil pan, and the oil outlet of the auxiliary pump is communicated with the oil collecting container; the oil inlet of the main pump is communicated with the oil collecting container, and the oil outlet of the main pump is communicated with the engine lubrication passage. When an engine is inclined at a large angle, engine oil in the engine can be cycled continuously and normally participates in lubricating work.
Description
Technical field
The present invention relates to field of engine lubrication technology, especially relate to a kind of engine oil pump and engine lubrication system thereof.
Background technique
In engine lubrication system, oil pump is as important component, and its function is for kinematic pair each in motor, hydraulic unit provide the machine oil of certain pressure and set up film lubrication, thus guaranteeing engine work.
Under the operating conditions of motor routine, machine oil in oil sump is delivered to each kinematic pair and hydraulic unit by oil pump, participate in lubrication after machine oil be back to rapidly again in oil sump, therefore in-engine machine oil by oil pump continuously again and again each kinematic pair, hydraulic unit Inner eycle work.
But motor is in the operating mode of some limit, as one-sidedly in automobile stunt take turns land traveling, climb very steep slopes etc., motor and oil sump angle of inclination large, participate in the machine oil backflow difficulty after lubrication, in oil sump, " loss " machine oil is too much, oil pump oil suction deficiency can be caused even to inhale less than machine oil, affect the normal lubrication of motor.
Summary of the invention
Not enough for prior art, technical problem to be solved by this invention is to provide a kind of engine oil pump and engine lubrication system thereof, and its motor, under wide-angle tilt operating mode, guarantees that machine oil continuously normally participates in engine lubrication work.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of engine oil pump, comprises main pump and auxiliary pump, and described main pump and auxiliary pump adopt segmentation structure, and described main pump and auxiliary pump share a driving shaft, and described main pump and auxiliary pump are equipped with independently filler opening and oil outlet.
Described driving shaft is respectively equipped with the main pump driving gear suitable with the main pump driven gear on main pump driven shaft in main pump, the auxiliary pump driving gear suitable with the auxiliary pump driven gear on auxiliary pump driven shaft in auxiliary pump.
Described auxiliary pump is the one group of auxiliary pump be arranged side by side.
Described main pump is provided with engine oil pump pressure-limiting valve.
The outer end of described driving shaft is provided with gear or sprocket wheel.
Be fixed together side by side through the fixed hole on respective housing by bolt between described main pump and auxiliary pump.
The material of described main pump driven gear and auxiliary pump driven gear is plastics.
The axis of described main pump driven shaft and the axes coincide of auxiliary pump driven shaft.
Described driving shaft and main pump driven shaft and auxiliary pump driven shaft are hollow shaft.
A kind of engine lubrication system with described engine oil pump, comprise oil sump and engine lubrication oil duct, also comprise oil container, the auxiliary pump filler opening of described auxiliary pump is connected with oil sump, auxiliary pump oil outlet is connected with oil container, the main pump filler opening of described main pump is connected with oil container, and main pump oil outlet is connected with engine lubrication oil duct.
The present invention compared with prior art, has the following advantages:
A certain amount of oil lubricating and working pressure is provided to each kinematic pair of motor, hydraulic unit by main pump, and the machine oil refluxed after collecting motor lubrication work everywhere by auxiliary pump be transported in the oil container of specifying, by main pump, lubricant oil in oil container is pumped in engine lubricating oil road, motor is under wide-angle tilt operating mode, can guarantee that motor inner engine oil continuously circulates, the work of normal participation lubrication; Due to auxiliary pump by lubricant oil collection in oil sump in oil container, therefore oil sump oneself height can significantly reduce, make oil sump be convenient to arrange, add the ground Clearance of oil sump; Main pump and auxiliary pump adopt segmentation structure, and each auxiliary pump structure is consistent, has taken into account the serial of product and versatility; Driving shaft, the driven shaft of main pump and auxiliary pump are designed to hollow core structures, and driving gear choice of powder metallurgical material, driven gear select plastic materials, decrease engine oil pump assembly weight, reduce cost.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is engine oil pump schematic perspective view of the present invention.
Fig. 2 is engine oil pump schematic front view of the present invention.
Fig. 3 is the cross-sectional schematic of oil pump of the present invention along Gear center face.
Fig. 4 is engine oil pump pressure-limiting valve cross-sectional schematic of the present invention.
Fig. 5 is oil pump drive end structural representation of the present invention.
In figure: 1. main pump, 2. auxiliary pump I, 3. auxiliary pump II, 4. auxiliary pump III, 5. bolt, 6. nut, 7. installation base, 8. main pump filler opening, 9. auxiliary pump filler opening I, 10. auxiliary pump filler opening II, 11. auxiliary pump filler openings III, 12. main pump oil outlets, 13. auxiliary pump oil outlets I, 14. auxiliary pump oil outlets II, 15. auxiliary pump oil outlets III, 21. rear cases, 22. main pump housings, 23. auxiliary pump housings, 24. front cases, 26. driving shafts, 27. oil sealings, 28. collars, 30. auxiliary pump driven shafts, 31. main pump driven shafts, 32. main pump driving gears, 33. auxiliary pump driving gears, 34. auxiliary pump driven gears, 35. main pump driven gears, 36.O type circle, 41. Decompression valvess, 42. pressure-limit valve oil inlet holes, 43. oil leak hole.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figures 1 to 5, this engine oil pump, comprise a main pump 1 and three auxiliary pumps, three auxiliary pumps are respectively auxiliary pump I 2, auxiliary pump II 3, auxiliary pump III 4, wherein, adopt segmented side by side configuration between main pump 1 and three auxiliary pumps, between main pump housing 22 and auxiliary pump housing 23 by four bolts 5 through the fixed hole on respective housing, lock with four corresponding nuts 6 and be fixed together side by side.Auxiliary pump can arrange demand according to engine design, and increase and decrease auxiliary pump sets of numbers dresses up tandem product.
Main pump 1 and three auxiliary pumps share a driving shaft 26, and driving shaft 26 front end and front case 24 adopt oil sealing 27 to seal, and oil sealing 27 is fixed on front case 24 by collar 28; The outer end of driving shaft 26 is provided with gear or sprocket wheel, adopts chain or gear pair to drive.
Three auxiliary pumps are side by side near the outer end of driving shaft 26, the housing of auxiliary pump III is the front case 24 of oil pump, auxiliary pump III 4, auxiliary pump II 3, auxiliary pump I 2, main pump 1 set gradually from the outer end of driving shaft, and main pump housing 22 matches with the rear case 21 of oil pump and is fixed together.Three auxiliary pumps and a main pump form total member, and engine oil pump assembly part is fixedly mounted on engine cylinder-body by installation base 7.
Driving shaft 26 is respectively equipped with the main pump driving gear 32 suitable with the main pump driven gear 35 on main pump driven shaft 31 in main pump, the auxiliary pump driving gear 33 suitable with the auxiliary pump driven gear 34 on auxiliary pump driven shaft 30 in auxiliary pump.Main pump and auxiliary pump are equipped with independently filler opening and oil outlet, be specially, main pump filler opening 8 on main pump and main pump oil outlet 12, auxiliary pump filler opening I 9 on auxiliary pump I and auxiliary pump oil outlet I 13, auxiliary pump filler opening II 10 on auxiliary pump II and auxiliary pump oil outlet II 14, the auxiliary pump filler opening III 11 on auxiliary pump III and auxiliary pump oil outlet III 15, wherein, main pump and auxiliary pump filler opening is separately arranged side by side, and main pump and auxiliary pump oil outlet is separately arranged side by side.
O type circle 36 is adopted to seal between the front case 24 of main pump and auxiliary pump, auxiliary pump housing 23, main pump housing 22, rear case 21 adjacent housings.
Main pump 1 and auxiliary pump are gear type oil pump, and the driven gear of main pump 1 and auxiliary pump is assemblied in separately on respective driven shaft separately, the axis of main pump driven shaft 31 and the axes coincide of auxiliary pump driven shaft 30 after assembling.Adopt this kind of structure, improve the versatility of product percent of pass design component, be conducive to the assembling of assembly simultaneously.
Main pump 1 is provided with engine oil pump pressure-limiting valve, and engine oil pump pressure-limiting valve is internal drainage type structure, is arranged on rear case; Engine oil pump pressure-limiting valve comprises Decompression valves 41, pressure-limit valve oil inlet hole 42, oil leak hole 43, and the reliable main pump oil outlet of pressure-limit valve oil inlet hole is arranged, and the reliable main pump filler opening of oil leak hole is arranged.
Driving shaft 26 and main pump driven shaft 31 and auxiliary pump driven shaft 30 are hollow shaft; The material of pump driven gear and auxiliary pump driven gear is plastics, and driving gear material is powder metallurgy, greatly reducing the weight of assembly, reduces cost.
There is the engine lubrication system of this engine oil pump, comprise oil sump and engine lubrication oil duct and oil container, the auxiliary pump filler opening of auxiliary pump is connected with oil sump, auxiliary pump oil outlet is connected with oil container, the main pump filler opening of described main pump is connected with oil container, and main pump oil outlet is connected with engine lubrication oil duct.
The machine oil refluxed after collecting motor lubrication work everywhere by auxiliary pump is also transported in the oil container of specifying, by main pump, lubricant oil in oil container is pumped in engine lubricating oil road, a certain amount of oil lubricating and working pressure is provided to each kinematic pair of motor, hydraulic unit by main pump, motor is under wide-angle tilt operating mode, can guarantee that motor inner engine oil continuously circulates, the work of normal participation lubrication.
Due to auxiliary pump by lubricant oil collection in oil sump in oil container, therefore oil sump oneself height can significantly reduce, make oil sump be convenient to arrange, add the ground Clearance of oil sump.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present invention and technological scheme are carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (10)
1. an engine oil pump, is characterized in that: comprise main pump and auxiliary pump, and described main pump and auxiliary pump adopt segmentation structure, and described main pump and auxiliary pump share a driving shaft, and described main pump and auxiliary pump are equipped with independently filler opening and oil outlet.
2. engine oil pump as claimed in claim 1, is characterized in that: described driving shaft is respectively equipped with the main pump driving gear suitable with the main pump driven gear on main pump driven shaft in main pump, the auxiliary pump driving gear suitable with the auxiliary pump driven gear on auxiliary pump driven shaft in auxiliary pump.
3. engine oil pump as claimed in claim 1, is characterized in that: described auxiliary pump is the one group of auxiliary pump be arranged side by side.
4. engine oil pump as claimed in claim 1, is characterized in that: described main pump is provided with engine oil pump pressure-limiting valve.
5. engine oil pump as claimed in claim 1, is characterized in that: the outer end of described driving shaft is provided with gear or sprocket wheel.
6. engine oil pump as claimed in claim 1, is characterized in that: be fixed together side by side through the fixed hole on respective housing by bolt between described main pump and auxiliary pump.
7. engine oil pump as claimed in claim 2, is characterized in that: the material of described main pump driven gear and auxiliary pump driven gear is plastics.
8. engine oil pump as claimed in claim 2, is characterized in that: the axis of described main pump driven shaft and the axes coincide of auxiliary pump driven shaft.
9. engine oil pump as claimed in claim 2, is characterized in that: described driving shaft and main pump driven shaft and auxiliary pump driven shaft are hollow shaft.
10. one kind has the engine lubrication system of engine oil pump described in claim 1, comprise oil sump and engine lubrication oil duct, it is characterized in that: also comprise oil container, the auxiliary pump filler opening of described auxiliary pump is connected with oil sump, auxiliary pump oil outlet is connected with oil container, the main pump filler opening of described main pump is connected with oil container, and main pump oil outlet is connected with engine lubrication oil duct.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557301.4A CN104405469A (en) | 2014-10-20 | 2014-10-20 | Engine oil pump and engine lubrication system thereof |
| PCT/CN2015/090380 WO2016062180A1 (en) | 2014-10-20 | 2015-09-23 | Engine oil pump and engine lubrication system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557301.4A CN104405469A (en) | 2014-10-20 | 2014-10-20 | Engine oil pump and engine lubrication system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405469A true CN104405469A (en) | 2015-03-11 |
Family
ID=52643124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410557301.4A Pending CN104405469A (en) | 2014-10-20 | 2014-10-20 | Engine oil pump and engine lubrication system thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104405469A (en) |
| WO (1) | WO2016062180A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134326A (en) * | 2015-08-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Engine oil pump and lubrication system thereof |
| WO2016062180A1 (en) * | 2014-10-20 | 2016-04-28 | 奇瑞汽车股份有限公司 | Engine oil pump and engine lubrication system thereof |
| CN107201927A (en) * | 2017-06-01 | 2017-09-26 | 合肥工业大学 | A kind of dry lubrication system applied to university student's equation motorcycle race |
| CN107355666A (en) * | 2017-09-09 | 2017-11-17 | 湖南机油泵股份有限公司 | A kind of birotor lubricating oil pump |
| CN107630813A (en) * | 2017-09-21 | 2018-01-26 | 奇瑞汽车股份有限公司 | Duplicate gear lubricating oil pump |
| CN107975474A (en) * | 2018-01-05 | 2018-05-01 | 湖南机油泵股份有限公司 | A kind of three-level lubricating oil pump |
| CN109812414A (en) * | 2019-04-10 | 2019-05-28 | 中国民航大学 | Cam cavate positive displacement pump |
| CN110360437A (en) * | 2019-08-14 | 2019-10-22 | 湖南机油泵股份有限公司 | A kind of lightweight lubricating oil pump with auxiliary pump |
| CN110397485A (en) * | 2019-08-07 | 2019-11-01 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN113482914A (en) * | 2021-08-13 | 2021-10-08 | 上海尚实能源科技有限公司 | Gear oil pump of turboprop engine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931488A (en) * | 2018-09-27 | 2019-06-25 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump being avoided that inordinate wear |
| CN109268664A (en) * | 2018-11-29 | 2019-01-25 | 湖南机油泵股份有限公司 | A kind of pair of bushing carries out the gear type oil pump of circulation lubrication |
| CN110260140B (en) * | 2019-07-17 | 2024-07-05 | 湖南机油泵股份有限公司 | Lubricating oil pump convenient for shaft to leak |
| CN113864023B (en) * | 2020-06-30 | 2023-09-12 | 四川航天世源科技有限公司 | High-integration automobile engine cooling and lubricating module |
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| CN202484566U (en) * | 2012-02-16 | 2012-10-10 | 南通柴油机股份有限公司 | Novel oil pump of diesel engine |
| CN103574250A (en) * | 2013-10-18 | 2014-02-12 | 湖南机油泵股份有限公司 | Two-stage oil pump |
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| DE10045752A1 (en) * | 2000-09-15 | 2002-03-28 | Daimler Chrysler Ag | Pump for supplying oil has pre-tension spring, pre-tension of which depends on temperature of fluid being pumped |
| JP4747437B2 (en) * | 2001-05-08 | 2011-08-17 | 株式会社豊田自動織機 | Oil leakage prevention structure in vacuum pump |
| EP2085616B1 (en) * | 2008-01-29 | 2017-03-29 | LEONARDO S.p.A. | Combined scavenging Roots pump and feed pump |
| CN202432223U (en) * | 2011-12-31 | 2012-09-12 | 绵阳新晨动力机械有限公司 | Engine oil pump |
| CN102606256A (en) * | 2012-03-29 | 2012-07-25 | 奇瑞汽车股份有限公司 | Novel oil pan for engine |
| CN104405469A (en) * | 2014-10-20 | 2015-03-11 | 奇瑞汽车股份有限公司 | Engine oil pump and engine lubrication system thereof |
| CN105134326B (en) * | 2015-08-19 | 2018-08-14 | 奇瑞汽车股份有限公司 | A kind of engine oil pump and its lubricating system |
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- 2014-10-20 CN CN201410557301.4A patent/CN104405469A/en active Pending
-
2015
- 2015-09-23 WO PCT/CN2015/090380 patent/WO2016062180A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2878728Y (en) * | 2006-02-22 | 2007-03-14 | 广州市番禺华南摩托企业集团有限公司 | Oil pump |
| CN202017627U (en) * | 2011-03-27 | 2011-10-26 | 长治液压有限公司 | Double-oil-inlet big-flow-rate hydraulic gear wheel pump |
| CN202484566U (en) * | 2012-02-16 | 2012-10-10 | 南通柴油机股份有限公司 | Novel oil pump of diesel engine |
| CN103574250A (en) * | 2013-10-18 | 2014-02-12 | 湖南机油泵股份有限公司 | Two-stage oil pump |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062180A1 (en) * | 2014-10-20 | 2016-04-28 | 奇瑞汽车股份有限公司 | Engine oil pump and engine lubrication system thereof |
| CN105134326B (en) * | 2015-08-19 | 2018-08-14 | 奇瑞汽车股份有限公司 | A kind of engine oil pump and its lubricating system |
| CN105134326A (en) * | 2015-08-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Engine oil pump and lubrication system thereof |
| CN107201927A (en) * | 2017-06-01 | 2017-09-26 | 合肥工业大学 | A kind of dry lubrication system applied to university student's equation motorcycle race |
| CN107355666A (en) * | 2017-09-09 | 2017-11-17 | 湖南机油泵股份有限公司 | A kind of birotor lubricating oil pump |
| CN107355666B (en) * | 2017-09-09 | 2022-08-09 | 湖南机油泵股份有限公司 | Double-rotor oil pump |
| CN107630813A (en) * | 2017-09-21 | 2018-01-26 | 奇瑞汽车股份有限公司 | Duplicate gear lubricating oil pump |
| CN107975474A (en) * | 2018-01-05 | 2018-05-01 | 湖南机油泵股份有限公司 | A kind of three-level lubricating oil pump |
| CN109812414A (en) * | 2019-04-10 | 2019-05-28 | 中国民航大学 | Cam cavate positive displacement pump |
| CN110397485A (en) * | 2019-08-07 | 2019-11-01 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN110360437A (en) * | 2019-08-14 | 2019-10-22 | 湖南机油泵股份有限公司 | A kind of lightweight lubricating oil pump with auxiliary pump |
| CN110360437B (en) * | 2019-08-14 | 2024-01-23 | 湖南机油泵股份有限公司 | Light engine oil pump with auxiliary pump |
| CN113482914A (en) * | 2021-08-13 | 2021-10-08 | 上海尚实能源科技有限公司 | Gear oil pump of turboprop engine |
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|---|---|
| WO2016062180A1 (en) | 2016-04-28 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |