CN109578269A - A kind of engine rotor engine oil pump structure - Google Patents
A kind of engine rotor engine oil pump structure Download PDFInfo
- Publication number
- CN109578269A CN109578269A CN201910093202.8A CN201910093202A CN109578269A CN 109578269 A CN109578269 A CN 109578269A CN 201910093202 A CN201910093202 A CN 201910093202A CN 109578269 A CN109578269 A CN 109578269A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil return
- low pressure
- high pressure
- pump housing
- 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
- 239000010705 motor oil Substances 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 101
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 description 7
- 239000010721 machine oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/064—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps
-
- 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
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0238—Rotary 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a kind of engine rotor engine oil pump structures, including the pump housing, pump cover, accommodating cavity is equipped in the middle part of the pump housing, inner and outer Rotator is equipped in accommodating cavity, multiple working chambers are formed between the tooth of inner and outer Rotator, pump housing leading flank is additionally provided with low pressure chamber and high pressure chest, when some working chamber rotates through low pressure chamber oil suction, by when high pressure chest by oil pressure to oil outlet, it is equipped with the high-low pressure interface channel for being connected to high pressure chest and low pressure chamber at the top of the pump housing, is equipped with relief valve in high-low pressure interface channel；Pump housing leading flank bottom is also provided with one section of compensating groove, and compensating groove is connected with high pressure chest bottom, and working chamber first passes through compensating groove using high pressure chest after producing from low pressure chamber；Cavity between oil sealing and internal rotor is oil return cavity, and the pump housing is provided with oil return inlet in oil return cavity bottom, and oil return outlet is provided on pump cover, is connected between oil return inlet and oil return outlet by drainback passage.Advantages of the present invention: noise is small, reduces oil seal failure risk.
Description
Technical field
The present invention relates to a kind of lubricating oil pump more particularly to a kind of engine rotor engine oil pump structures.
Background technique
For the circulation oil mass for guaranteeing engine lubrication system, machine oil is drawn onto main oil gallery from oil sump by lubricating oil pump, to start
The lubrication of each components of machine provides necessary medium, and rotor engine oil pump is the one of which of lubricating oil pump, the lubricating oil pump of the structure
Oil suction and pressure oil are realized by the variation that inner and outer rotors engage volume.
As vehicle noise, vibration and sound vibration roughness (Noise, Vibration, Harshness, abbreviation NVH) are wanted
Continuous promotion is asked, and existing rotor engine oil pump easily generates N order noise in the middle course of work, influences vehicle comfort level, and this
Itself leakage of kind pump is larger, and efficiency is lower, if being integrated with oil sealing on pump cover, since the high pressure oil of leakage easily damages oil
Envelope, increases oil sealing risk of leakage.
In conclusion a kind of engine rotor engine oil pump how is provided, so that it be made to efficiently solve N order noise and change
Kind oil sealing use environment, is current those skilled in the art's urgent problem.
Summary of the invention
Small, reduction oil seal failure risk that it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of noises
Engine rotor engine oil pump structure.
The present invention is achieved by the following technical solutions:
A kind of engine rotor engine oil pump structure, including the pump housing, pump cover, the pump housing middle part are equipped with the accommodating of front and back perforation
Chamber, the accommodating cavity rear side are equipped with oil sealing, are equipped with outer rotor and internal rotor, the outer rotor and internal rotor on front side of the accommodating cavity
It matches and is in eccentric setting, form multiple working chambers between the outer rotor and the tooth of internal rotor,
The pump housing leading flank is additionally provided with low pressure chamber and high pressure chest in left and right arrangement, when some working chamber rotates through
Oil suction when low pressure chamber, by when high pressure chest by oil pressure to oil outlet, be equipped at the top of the pump housing for being connected to high pressure chest and low pressure
The high-low pressure interface channel of chamber, the interior relief valve that is equipped with of the high-low pressure interface channel are let out when high pressure cavity pressure reaches setting value
Pressure valve is opened, and the oil of high pressure chest enters low pressure chamber；
Pump housing leading flank bottom is also provided with one section of compensating groove, and the compensating groove is connected with high pressure chest bottom, described
Compensating groove extends from high pressure chest bottom to the direction close to low pressure chamber bottom, and the working chamber is first passed through after producing from low pressure chamber and unloaded
Lotus slot is using high pressure chest；
Cavity between the oil sealing and internal rotor is oil return cavity, and the oil return cavity inner sidewall is equipped with inwardly projecting
Annular installation base, there are gaps between annular installation base on rear side of the internal rotor, and the pump housing is at oil return cavity bottom
Portion is provided with oil return inlet, and oil return outlet is provided on the pump cover, passes through drainback passage between the oil return inlet and oil return outlet
It is connected.
Further, it is embedded with a wear ring on the inside of the pump cover, the position of the wear ring is corresponding with internal rotor.
Further, the pump housing bottom is equipped with the oil return bottom outlet being connected with the drainback passage, the oil return bottom outlet
Place is sealed by oil return plug.
The present invention has the advantage that compared with prior art
1, a kind of engine rotor engine oil pump structure provided by the invention is worked by the way that compensating groove is arranged in the pump housing
After chamber is produced from low pressure chamber, compensating groove is first passed through before by high pressure chest and shifts to an earlier date off-load, oil is avoided and is directly entered high pressure chest
The problem that caused pump oil pressure is high, high pressure chest pressure fluctuation is big reduces noise so as to improve fluid N order noise.
2, a kind of engine rotor engine oil pump structure provided by the invention, by the way that annular installation is arranged in oil return cavity
Boss and drainback passage make rotor engine oil pump during the work time, and the high pressure oil of high pressure chest is convex by internal rotor and annular installation
The lubricating oil of clearance leakage to oil sealing between platform is back to oil sump, improves the use environment of oil sealing, reduces oil sealing
Failure risk.
3, a kind of engine rotor engine oil pump structure provided by the invention, is let out by being arranged in high-low pressure interface channel
Pressure valve, when pressure is excessive in high pressure chest, relief valve is automatically turned on, to protect whole device.
4, a kind of engine rotor engine oil pump structure provided by the invention, it is wear-resisting by being embedded with one on the inside of pump cover
The position of ring, the wear ring is corresponding with internal rotor, can effectively prevent the high pressure oil in high pressure chest between pump cover and internal rotor
Gap largely reveal, improve the working efficiency of lubricating oil pump.
Detailed description of the invention
Fig. 1 is exploded perspective figure of the invention.
Fig. 2 is pump housing perspective view of the invention.
Fig. 3 is main view of the invention.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is enlarged drawing at the B of Fig. 4.
Fig. 6 is pump cover rearview of the invention.
Figure label: 1 pump housing, 2 pump covers, 3 oil sealings, 4 outer rotors, 5 internal rotors, 6 low pressure chambers, 7 high pressure chests, 8 oil outlets, 9
High-low pressure interface channel, 10 relief valves, 11 compensating grooves, 12 annular installation bases, 13 oil return gaps, 14 oil return inlets, 15 oil returns
Outlet, 16 drainback passages, 17 oil return plugs, 18 wear rings, 19 bolts, 20 oil inlets.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Referring to Fig. 1 to Fig. 6, present embodiment discloses a kind of engine rotor engine oil pump structure, including the pump housing 1, pump cover 2,
Pump cover 2 on front side of bolt 19 and the pump housing 1 by being detachably connected.The accommodating cavity of front and back perforation, accommodating cavity rear side are equipped in the middle part of the pump housing 1
Equipped with oil sealing 3, outer rotor 4 and internal rotor 5 are equipped on front side of accommodating cavity, outer rotor 4 matches with internal rotor 5 and is in eccentric setting,
Multiple working chambers are formed between outer rotor 4 and the tooth of internal rotor 5.
1 leading flank of the pump housing is additionally provided with low pressure chamber 6 and high pressure chest 7 in left and right arrangement, when some working chamber rotates through
Oil suction when low pressure chamber 6, by when high pressure chest 7 by oil pressure to oil outlet 8, wherein low pressure chamber 6 is connected with oil inlet 20, the pump housing 1
Top is equipped with the high-low pressure interface channel 9 for being connected to high pressure chest 7 and low pressure chamber 6, is equipped with relief valve in high-low pressure interface channel 9
10, when 7 pressure of high pressure chest reaches setting value, relief valve 10 is opened, and the oil of high pressure chest 7 enters low pressure chamber 6.
1 leading flank bottom of the pump housing is also provided with one section of compensating groove 11, and compensating groove 11 is connected with 7 bottom of high pressure chest, compensating groove
11 extend from 7 bottom of high pressure chest to the direction close to 6 bottom of low pressure chamber, and working chamber first passes through compensating groove after producing from low pressure chamber 6
11 using high pressure chest 7；After some working chamber is produced from low pressure chamber 6, compensating groove 11 is first passed through before by high pressure chest 7 and is shifted to an earlier date
Off-load avoids the problem that pump oil pressure is high, 7 pressure fluctuation of high pressure chest is big caused by engaging volume change greatly because of inner and outer rotors 4,
So as to improve fluid N order noise, noise is reduced.
Cavity between oil sealing 3 and internal rotor 5 is oil return cavity, and oil return cavity inner sidewall is equipped with inwardly projecting annular
Installation base 12, there are gap between 5 rear side of internal rotor and annular installation base 12, which is known as oil return gap 13, the pump housing 1
It is provided with oil return inlet 14 in oil return cavity bottom, oil return outlet 15 is provided on pump cover 2, between oil return inlet 14 and oil return outlet 15
It is connected by drainback passage 16.1 bottom of the pump housing is equipped with the oil return bottom outlet being connected with drainback passage 16, and oil return bottom orifice passes through
Oil return plug 17 seals.In the rotor engine oil pump course of work, the high pressure oil of high pressure chest 7 enters oil return cavity by oil return gap 13,
And oil sump is timely back to by drainback passage 16, it avoids and reveals high pressure oil spurts and accumulation between internal rotor 5 and the pump housing 1
To at oil sealing 3,3 use environment of oil sealing is improved, the service life of oil sealing 3 is improved, reduces the failure risk of oil sealing 3.
A wear ring 18 is embedded on the inside of pump cover 2, the position of wear ring 18 is corresponding with internal rotor 5.Wear ring 18 can
Using polytetrafluoroethylene (PTFE) material (Poly tetra fluoroethylene, abbreviation PTEF), this material is what industry was generally acknowledged at present
One of most corrosion-resistant and anti-abrasive material can be used continuously at 260 DEG C, extremely low with 290-300 DEG C of maximum operation (service) temperature
Coefficient of friction, good wearability and fabulous chemical stability.It can at 250 ° hereinafter, or even suddenly cold and hot it is any strong
Stable use for a long time in aggressive chemistry medium.The wear ring 18 is set, can effectively prevent high pressure oil in high pressure chest 7 from pump cover
Gap between 2 and internal rotor 5 is largely revealed, and the working efficiency of lubricating oil pump is improved.
When work, internal rotor 5 rotates counterclockwise under the drive of transmission shaft, internal rotor 5 and 4 eccentric setting of outer rotor, because
The rotation of this internal rotor 5 will drive outer rotor 4 and correspondingly rotate, and when internal rotor 5 goes to any angle, inner and outer Rotator 4 is each
Can mutually coordinate point contact on the tooth form line of tooth, just form multiple working chambers between such inner and outer Rotator 4.When a certain work
When chamber is turned over from low pressure chamber 6, volume is gradually increased, and generates vacuum, and machine oil is just inhaled into the working chamber.Inner and outer Rotator 4 continues to revolve
Turn, the off-load in advance when the working chamber rotates through compensating groove 11, then using high pressure chest 7, working chamber internal volume reduces, oil
Pressure increases, and machine oil is extruded through oil outlet 8.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (3)
1. a kind of engine rotor engine oil pump structure, including the pump housing, pump cover, the pump housing middle part is equipped with the accommodating of front and back perforation
Chamber, the accommodating cavity rear side are equipped with oil sealing, are equipped with outer rotor and internal rotor, the outer rotor and internal rotor on front side of the accommodating cavity
It matches and is in eccentric setting, form multiple working chambers between the outer rotor and the tooth of internal rotor, it is characterised in that:
The pump housing leading flank is additionally provided with low pressure chamber and high pressure chest in left and right arrangement, when some working chamber rotates through low pressure
Oil suction when chamber, by when high pressure chest by oil pressure to oil outlet, be equipped at the top of the pump housing for being connected to high pressure chest and low pressure chamber
High-low pressure interface channel, the high-low pressure interface channel is interior to be equipped with relief valve, when high pressure cavity pressure reaches setting value, relief valve
It opens, the oil of high pressure chest enters low pressure chamber；
Pump housing leading flank bottom is also provided with one section of compensating groove, and the compensating groove is connected with high pressure chest bottom, the off-load
Slot extends from high pressure chest bottom to the direction close to low pressure chamber bottom, and the working chamber first passes through compensating groove after producing from low pressure chamber
Using high pressure chest；
Cavity between the oil sealing and internal rotor is oil return cavity, and the oil return cavity inner sidewall is equipped with inwardly projecting ring
Shape installation base, there are gap between the internal rotor rear side and annular installation base, the pump housing is opened in oil return cavity bottom
There is oil return inlet, oil return outlet is provided on the pump cover, is connected between the oil return inlet and oil return outlet by drainback passage
It is logical.
2. a kind of engine rotor engine oil pump structure as described in claim 1, it is characterised in that: be embedded on the inside of the pump cover
The position of one wear ring, the wear ring is corresponding with internal rotor.
3. a kind of engine rotor engine oil pump structure as described in claim 1, it is characterised in that: the pump housing bottom be equipped with
The oil return bottom outlet that the drainback passage is connected, the oil return bottom orifice are sealed by oil return plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093202.8A CN109578269B (en) | 2019-01-30 | 2019-01-30 | Engine rotor oil pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093202.8A CN109578269B (en) | 2019-01-30 | 2019-01-30 | Engine rotor oil pump structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578269A true CN109578269A (en) | 2019-04-05 |
| CN109578269B CN109578269B (en) | 2023-09-08 |
Family
ID=65918175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910093202.8A Active CN109578269B (en) | 2019-01-30 | 2019-01-30 | Engine rotor oil pump structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578269B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087731Y (en) * | 2007-07-21 | 2008-07-16 | 奇瑞汽车有限公司 | Roter type engine oil pump of car engine |
| CN201284736Y (en) * | 2008-08-26 | 2009-08-05 | 奇瑞汽车股份有限公司 | Flux-variable rotor engine oil pump |
| CN101576078A (en) * | 2008-05-09 | 2009-11-11 | 广西玉柴机器股份有限公司 | Engine oil pump device |
| KR20180064991A (en) * | 2016-12-06 | 2018-06-15 | 한국원자력연구원 | Oil pump of engine |
| CN109000139A (en) * | 2018-08-06 | 2018-12-14 | 奇瑞汽车股份有限公司 | Rotor engine oil pump |
-
2019
- 2019-01-30 CN CN201910093202.8A patent/CN109578269B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087731Y (en) * | 2007-07-21 | 2008-07-16 | 奇瑞汽车有限公司 | Roter type engine oil pump of car engine |
| CN101576078A (en) * | 2008-05-09 | 2009-11-11 | 广西玉柴机器股份有限公司 | Engine oil pump device |
| CN201284736Y (en) * | 2008-08-26 | 2009-08-05 | 奇瑞汽车股份有限公司 | Flux-variable rotor engine oil pump |
| KR20180064991A (en) * | 2016-12-06 | 2018-06-15 | 한국원자력연구원 | Oil pump of engine |
| CN109000139A (en) * | 2018-08-06 | 2018-12-14 | 奇瑞汽车股份有限公司 | Rotor engine oil pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578269B (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4072811B2 (en) | Shaft seal device for oil-free screw compressor | |
| US20070059194A1 (en) | Rotor apparatus of pump | |
| CN111664089A (en) | Electronic oil pump | |
| JPH0914152A (en) | Internal gear type rotary pump | |
| CN209414140U (en) | A kind of engine rotor engine oil pump structure | |
| JPH0370891A (en) | Shaft seal device for oil-sealed rotary vacuum pump | |
| US6659746B2 (en) | Shaft seal structure of vacuum pumps | |
| JPS61138893A (en) | Trochoidal oil pump | |
| CN109578269A (en) | A kind of engine rotor engine oil pump structure | |
| JP2002122087A (en) | Shaft-sealing structure in vacuum pump | |
| US6663367B2 (en) | Shaft seal structure of vacuum pumps | |
| US6659747B2 (en) | Shaft seal structure of vacuum pumps | |
| CN214221484U (en) | Fluid pump | |
| KR102465393B1 (en) | Pump | |
| EP2242927B1 (en) | A displacement pump with a barrier against the fluid leakage | |
| CN100400881C (en) | Axle sealing structure for vacuum pump | |
| CN212690341U (en) | Oil-free screw compressor sealing structure | |
| JPS6146232Y2 (en) | ||
| CN110925190A (en) | Oil pump with sectional type crescent moon plate | |
| KR0148866B1 (en) | Inscribed type oil pump | |
| CN221033290U (en) | Pump shell of end face small-clearance vortex pump | |
| CN116335936B (en) | Gear pump | |
| JP3389443B2 (en) | Vane type vacuum pump | |
| CN220248347U (en) | External gear pump | |
| CN218913170U (en) | Oil-free rotary tooth compressor |
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 |