CN108661902A - A kind of automobile engine oil pump assembly and its production technology - Google Patents
A kind of automobile engine oil pump assembly and its production technology Download PDFInfo
- Publication number
- CN108661902A CN108661902A CN201810398560.5A CN201810398560A CN108661902A CN 108661902 A CN108661902 A CN 108661902A CN 201810398560 A CN201810398560 A CN 201810398560A CN 108661902 A CN108661902 A CN 108661902A
- Authority
- CN
- China
- Prior art keywords
- oil
- pump
- pressure
- oil pump
- chamber
- 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
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
- F02F7/0068—Adaptations for other accessories
-
- 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
Abstract
The present invention refers in particular to a kind of automobile engine oil pump assembly and its production technology, belong to technical field of automobile accessories, including timing chain cover, it is equipped with pump cover in timing chain cover, is equipped with machine oil pump group part in the pump chamber that the pump cover is formed, which includes internal rotor, outer rotor and pressure limiting valve gear, the internal rotor and outer rotor are during rotation, oil suction chamber, intermediate cavity and oil outlet chamber are formed respectively between pump chamber, the pump chamber is equipped with pressure relief groove.The production technology of product includes fusing, die casting, ball blast, finishing, assembly and packaging etc..The present invention can improve and adjust the pressure in engine oil pump assembly, and Leakage caused by avoiding vibrations caused by pressure and noise and hypertonia improves the stability of machine oil pump work, extends service life；In addition during production, reach light-weighted purpose, and production efficiency is greatly improved, in the case where effectively reducing production cost, also improve the quality of product.
Description
Technical field
The invention belongs to technical field of automobile accessories, are related to a kind of manufacture of lubricating pump of automobile, refer in particular to a kind of automobile engine oil
Pump assembly and its production technology.
Background technology
Since oil leak and noise problem, split type lubricating oil pump assembly fiber crops occurs to present engine oil pump assembly in face feedback on the market
Tired, assembly cost is higher, and engine weight increases, and power consumption increases, it is contemplated that these problems, for light-type noise reduction monoblock type
The development of engine oil pump assembly has extremely important effect.
As each parts above engine are constantly unfolded to optimize, the especially continuous propulsion of lightweight engine is adopted
Have become inevitable choice with integral-type oil pump assembly.For this present situation, we have proposed light-type noise reduction monoblock type machines
Oil pump assy solution.
Invention content
The object of the present invention is to provide a kind of lightweight and the automobile engine oil pump assemblies of energy noise reduction.
The object of the present invention is achieved like this：A kind of automobile engine oil pump assembly, including timing chain cover are set in timing chain cover
Be equipped with pump cover, machine oil pump group part be provided in the pump chamber that the pump cover is formed, the machine oil pump group part include internal rotor, outer rotor and
Pressure limiting valve gear, wherein a part of tooth of the internal rotor and outer rotor be in meshing state, the separated state of another part tooth,
Oil inlet a and oil outlet a are provided on the pump chamber, the internal rotor and outer rotor are during rotation, between pump chamber
Oil suction chamber, intermediate cavity and oil outlet chamber are formed respectively, the mounting groove inner wall of the outer rotor is provided with oil inlet b, the oil inlet
Mouth b is connected to oil inlet a, and the inner wall of the intermediate cavity is provided with oil outlet b, and the oil outlet b is connected to oil outlet a, described
Both oil suction chamber and oil outlet chamber can coordinate internal rotor and outer rotor to be intermeshed rotation, the space pressures of two cavitys with
Pressure difference small when big when the rotation of inner and outer Rotator, being generated between two cavitys, realizes the function of pump oil；The pressure limiting valve packet
Spool, pressure valve spring and pressure limiting valve plug screw are included, when oil pressure is excessively high, the oil pressure acted on spool is more than the pre- of pressure valve spring
Clamp force makes a part of oil flow back into oil suction chamber after open-top spool.
A kind of automobile engine oil pump assembly mentioned above, wherein be provided with pressure relief groove on the pump chamber, the pressure relief groove with
Oil outlet chamber is connected to.
A kind of automobile engine oil pump assembly mentioned above, wherein the external tooth of the internal rotor is mutually nibbled with the internal tooth of outer rotor
It closes, and tolerance fit between the two is clearance fit.
A kind of automobile engine oil pump assembly mentioned above, wherein the timing chain cover and pump cover are all made of aluminium and are made,
And the inner cavity of the two is both provided with reinforcing rib.
The production technology of the automobile engine oil pump assembly, includes the following steps：
1) it by aluminium ingot by concentrating melting furnace fusing, and is removed the gred, degassing processing；
2) die cast is carried out by high pressure die casting machine by processed molten aluminum；
3) cast gate of shaped article and all burrs are taken out clean；
4) product cleaned out send to ball blast region and carries out Shot Blasting, obtains the hair that all process steps are processed completion
Base；
5) blank that processing is completed is sent to finishing area, by Cutter Body Processing with Machining Center；
6) it is cleaned by finished product, and the air-tightness of test product, is sent product to assembly section after qualified
Domain；
7) it in assembly area, carries out spool, pressure valve spring, pressure limiting valve plug screw, the pump cover to be assembled into oil pump cover total
At inner and outer Rotator is fitted into pump chamber, is tightened pump cover and pump chamber with bolt；
8) product bagging packaging is put into carton, is then put in storage.
First melting furnace is preheated in step 1) described above, preheating temperature is 160-180 DEG C, and preheating time is 10 points
Clock enables aluminium ingot heated fast, and is heated evenly, and fusion temperature is less than 750 DEG C, keeps molten aluminum in liquid, temperature raising
During, reacting between molten aluminum and moisture and oxygen can accelerate, and hydrogen also increases with temperature in the solubility of molten aluminum and aggravated, temperature
The oxidation film that molten aluminum surface can be destroyed when spending high, causes above-mentioned reaction significantly to aggravate.
Gas used when degasification is nitrogen in step 1) described above, and fusion temperature control is at 650 DEG C or so, molten aluminum
In be filled with nitrogen after, will produce bubble, bubble takes the hydrogen of dissolving out of molten aluminum during floating, and fusion temperature can change
The size and ascent rate of bubble.
When carrying out die casting by high pressure die casting machine in step 2) described above, first mold is preheated, preheating temperature reaches
To 180-200 DEG C, the purpose of preheating is to prevent molten aluminum from meeting with the moisture of condensation on the mold surface for safety and occur quick-fried
It is fried, while can also prevent from bringing gas and field trash into molten aluminum.
In step 2) described above after the completion of die casting, supercharging and pressurize are carried out, pressure total value after supercharged is 60-
220MPa, dwell time are 5-15 minutes, can reduce the stomata in casting, improve the consistency of casting.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：It can improve and adjust in engine oil pump assembly
Pressure avoids vibrations and noise, Leakage caused by also avoiding hypertonia caused by pressure and improves lubricating oil pump work
The stability of work, extends service life；In addition during production, light-weighted purpose, and production efficiency have been reached
It is greatly improved, in the case where effectively reducing production cost, also improves the quality of product.
Description of the drawings
Fig. 1 is the structural schematic diagram of timing chain cover in the present invention；
Fig. 2 is the schematic cross-sectional view at A-A in Fig. 1；
Fig. 3 is the structural schematic diagram saved in the present invention after pump cover；
Fig. 4 is the dimensional structure diagram that internal rotor and outer rotor are saved in the present invention；
Fig. 5 is the structure schematic diagram that internal rotor and outer rotor are saved in the present invention；
In figure：10- timing chain covers, 11- reinforcing ribs, 12- pump chambers, 13- pump covers, 14- internal rotors, 15- outer rotors, 16- into
Hydraulic fluid port a, 161- oil inlet b, 17- oil suction chamber, 18- intermediate cavities, 19- pressure relief grooves, 20- oil outlets a, 201- oil outlet b, 21- go out
Oil pocket, 22- pressure limiting valve gears, 23- spools, 24- pressure valve springs, 25- pressure limiting valve plug screws, 26- bolts.
Specific implementation mode
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 1-3：A kind of automobile engine oil
Pump assembly, including timing chain cover 10 are provided with pump cover 13 in timing chain cover 10, and the timing chain cover 10 and pump cover 13 are all made of aluminium
It is made, and the inner cavity of the two is both provided with reinforcing rib 11, and machine oil pump group is provided in the pump chamber 12 that the pump cover 13 is formed
Part, the machine oil pump group part include internal rotor 14, outer rotor 15 and pressure limiting valve gear 22, wherein the internal rotor 14 and outer rotor
15 a part of tooth is in meshing state, the separated state of another part tooth, and oil inlet a16 and fuel-displaced is provided on the pump cover 13
Mouth a20, the internal rotor 14 and outer rotor 15 form respectively oil suction chamber 17 during rotation between pump cover chamber 12,
Intermediate cavity 18 and oil outlet chamber 21, the mounting groove inner wall of the outer rotor 15 be provided with oil inlet b161, the oil inlet b161 with
Oil inlet a16 connections, the inner wall of the intermediate cavity 18 are provided with oil outlet b201, the oil outlet b201 and connect with oil outlet a20
Logical, both the oil suction chamber 17 and oil outlet chamber 21 can coordinate internal rotor 14 and outer rotor 15 to be intermeshed what the when of rotating was formed,
The space pressure of two cavitys with inner and outer Rotator rotation when it is big when it is small, the pressure difference generated between two cavitys realizes pump
The function of oil；The pressure limiting valve gear 22 includes spool 23, pressure valve spring 24 and pressure limiting valve plug screw 25, when oil pressure is excessively high, is made
It is more than the pretightning force of pressure valve spring 24 with the oil pressure on spool 23, so that a part of oil is flowed back into oil suction chamber after open-top spool 23
17。
The effect of lubricating oil pump is to provide engine oil pressure, and the machine oil in oil sump is drawn into pump chamber 12 by fuel sucking pipe, leads to
The engagement for crossing internal rotor 14, outer rotor 15 forms engine oil pressure, and machine oil is transported to the friction of moving component by cylinder-body oil duct
Face, lubrication or machine oil after cooling return in oil sump, so that machine oil is being lubricated and is being recycled in cooling system, to ensure to start
The good lubrication of machine and cooling.The lubricating oil pump of engine be using the internal rotor with pressure limiting valve, external-rotor-type lubricating oil pump, it be by
Bent axle is worked by chain-driving.Its operation of oil pump principle is：
(1), built-in there are one internal rotor 14 and an outer rotor 15 in pump chamber 12, between 13 inner wall of outer rotor 15 and pump cover
Gap very little.When engine works, since inner and outer Rotator move and increases to being disengaged from direction, the interior generation of pump chamber 12 one
Fixed vacuum degree, machine oil are just inhaled into from oil inlet a and enter oil suction chamber 17 from oil inlet b.Between cog institute when two rotors rotate
The machine oil deposited takes in oil outlet chamber 21, and since 21 side of oil outlet chamber, two rotor enters meshing state, 21 volume of oil outlet chamber reduces, pressure
Power increases, and oil outlet b201 of the machine oil just Jing Guo intermediate cavity 18 is flowed into oil outlet a20, is finally sent in engine oil channel.
Lubricating oil pump is by crankshaft front end gear by chain-driving, and when the engine is working, lubricating oil pump constantly works, to ensure that oil is moistening
Lubricating oil is recycled in road.
(2), when inner and outer Rotator enters engagement, the machine oil of between cog is engaged, prodigious pressure is generated since volume becomes smaller,
Machine oil is compressed.But the compressibility very little of fluid, to which oil pressure drastically increases, oil pump is therefore by additional load so that damage
It is bad.In addition, when sealed volume increases, formation vacuum is caused to vibration and the noise of oil pump.Thus one is milled out on pump chamber 12
Pressure relief groove 19, when inner and outer Rotator being made to engage, the machine oil that between cog squeezes out can flow to pressure relief groove 19 by oil outlet chamber 21, carry out
Decompression.
(3), oil pressure is excessively high in lube system, can increase engine power loss.Pressure limiting is set in engine oil pump assembly thus
Valve gear 22, when oil pressure exceeds normal value, the machine oil gross pressure acted on spool 23 will be pre- more than pressure valve spring 24
Clamp force, open-top spool 23 allow a part of oil to flow back into the oil suction chamber 17 of lubricating oil pump, make to keep certain pressure and flow in oil circuit,
Meet lubricating requirement.
In order to meet the related mechanical properties of engine calls, timing chain cover 10 and the selection of 13 raw material of oil pump cover
ADC12 aluminium ingots, then by the fusing of aluminium ingot, fusion temperature controls in 720 ± 10 DEG C, is then transported to guarantor by transhipment bag
In warm stove, kept the temperature；Product is filled into horizontal high voltage injection by die casting machine and mold, it is ensured that product design size is complete；
Then flash removed and Shot Blasting are removed；
The good product of ball blast is transported to machining production line, on numerical control machining center, is carried out to product by fixture
It clamps, is then machined out using cutter, satisfaction meets drawing requirement；Product after processing is checked, passed examination
Afterwards, assembly cooperation part is carried out；Gas observing and controlling process parameter is needed during assembly.Such as：Vacuum degree, torque etc.,
These procedure parameters play the role of detection to the characteristic of product；It is wanted so that it is guaranteed that client's installation dimension and assembly performance can reach
It asks.
Specific production stage is as follows：1) it by aluminium ingot by concentrating melting furnace fusing, and is removed the gred, degassing processing；Specifically
Operation is first to be preheated to melting furnace, and preheating temperature is 160-180 DEG C, and preheating time is 10 minutes, keeps aluminium ingot quick
It is heated, and be heated evenly, fusion temperature is less than 750 DEG C, and it is in liquid to keep molten aluminum, during temperature is raised, molten aluminum and water
Divide the reaction between oxygen that can accelerate, hydrogen also increases with temperature in the solubility of molten aluminum and aggravated, and can destroy aluminium when the temperature is excessively high
The oxidation film on liquid surface causes above-mentioned reaction significantly to aggravate, so, fusion temperature controls in 720 ± 10 DEG C；
Gas used is that nitrogen will produce bubble, bubble is during floating after being filled with nitrogen in molten aluminum when degasification
Take the hydrogen of dissolving out of molten aluminum, fusion temperature can change the size and ascent rate of bubble.Temperature is excessively high, the bubble generated
It is larger, float it is too fast, impurity and gas removal lack；The viscosity of molten aluminum is larger when temperature is too low, the gas being unfavorable in molten aluminum
Fully discharge, so fusion temperature control makes the size of bubble and ascent rate be in balanced position at 650 DEG C or so；
2) die cast is carried out by high pressure die casting machine by processed molten aluminum；Die casting is carried out by high pressure die casting machine
When, first mold is preheated, preheating temperature reaches 180-200 DEG C, and the purpose of preheating is to prevent molten aluminum and condensation for safety
Moisture on the mold surface meets and explodes, while can also prevent from bringing gas and field trash into molten aluminum；In addition, high temperature
When molten aluminum is entered in die cavity, mold can be shortened by thermal shock, service life, and casting makes internal appearance heat as thermal shock
Stress, and crack, or surface finish of casting is caused to decline, so needing to preheat mold, but preheat temperature
If Du Taigao, it is easy that casting is made to generate viscosity, influences die casting machine production efficiency；
After the completion of die casting, supercharging and pressurize are carried out, pressure total value after supercharged is 60-220MPa, dwell time 5-
15 minutes, the stomata in casting can be reduced, improves the consistency of casting；When pressure value is 60MPa, the dwell time is 15 points
Clock；When pressure value is 220MPa, the dwell time is 5 minutes；When pressure value is 100MPa, the dwell time is 10 minutes, specific
, can be five to six with pressure testing when operation, under the premise of to ensure casting Forming Quality and production efficiency, choose suitable pressure
And the dwell time.
3) cast gate of shaped article and all burrs are taken out clean；
4) product cleaned out send to ball blast region and carries out Shot Blasting, obtains the hair that all process steps are processed completion
Base；
5) blank that processing is completed is sent to finishing area, by Cutter Body Processing with Machining Center；
6) it is cleaned by finished product, and the air-tightness of test product, is sent product to assembly section after qualified
Domain；
7) it in assembly area, carries out spool 23, pressure valve spring 24, pressure limiting valve plug screw 25, pump cover 13 to be assembled into machine
Inner and outer Rotator is fitted into pump chamber 12 by oil pump cap assembly, is tightened pump cover 13 and pump chamber 12 with bolt 26；
8) product bagging packaging is put into carton, is then put in storage.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (9)
1. a kind of automobile engine oil pump assembly, including timing chain cover (10), timing chain cover (10) is interior to be provided with pump cover (13), the pump
It is provided with machine oil pump group part in the pump chamber (12) that lid (13) is formed, which includes internal rotor (14), outer rotor (15)
With pressure limiting valve gear (22), it is characterised in that：A part of tooth of the internal rotor (14) and outer rotor (15) is in meshing state, separately
A part of tooth separated state is provided with oil inlet a (16) and oil outlet a (20), the internal rotor on the pump chamber (12)
(14) and outer rotor (15) is during rotation, and oil suction chamber (17), intermediate cavity (18) are formed respectively between pump chamber (12)
With oil outlet chamber (21), the mounting groove inner wall of the outer rotor (15) is provided with oil inlet b (161), the oil inlet b (161) with
Oil inlet a (16) is connected to, and the inner wall of the intermediate cavity (18) is provided with oil outlet b (201), the oil outlet b (201) with it is fuel-displaced
Mouth a (20) is connected to；The pressure limiting valve gear (22) includes spool (23), pressure valve spring (24) and pressure limiting valve plug screw (25), oil
When pressing through high, the oil pressure acted on spool (23) is more than the pretightning force of pressure valve spring (24), makes one after open-top spool (23)
Part oil flows back into oil suction chamber (17).
2. a kind of automobile engine oil pump assembly according to claim 1, it is characterised in that：It is provided with and unloads on the pump chamber (12)
Indent (19), the pressure relief groove (19) are connected to oil outlet chamber (21).
3. a kind of automobile engine oil pump assembly according to claim 1, it is characterised in that：The external tooth of the internal rotor (14) and
The internal tooth of outer rotor (15) is meshed, and tolerance fit between the two is clearance fit.
4. a kind of automobile engine oil pump assembly according to claim 1-3 any one, it is characterised in that：The timing chain cover
(10) it is all made of aluminium with pump cover (13) and is made, and the inner cavity of the two is both provided with reinforcing rib (11).
5. a kind of production technology of automobile engine oil pump assembly according to claim 1, which is characterized in that including walking as follows
Suddenly：
1) it by aluminium ingot by concentrating melting furnace fusing, and is removed the gred, degassing processing；
2) die cast is carried out by high pressure die casting machine by processed molten aluminum；
3) cast gate of shaped article and all burrs are taken out clean；
4) product cleaned out send to ball blast region and carries out Shot Blasting, obtains the blank that all process steps are processed completion；
5) blank that processing is completed is sent to finishing area, by Cutter Body Processing with Machining Center；
6) it is cleaned by finished product, and the air-tightness of test product, is sent product to assembly area after qualified；
7) in assembly area, spool (23), pressure valve spring (24), pressure limiting valve plug screw (25), pump cover (13) are assembled into
For oil pump cover assembly, inner and outer Rotator is fitted into pump chamber (12), is twisted pump cover (13) and pump chamber (12) with bolt (26)
Tightly；
8) product bagging packaging is put into carton, is then put in storage.
6. a kind of production technology of automobile engine oil pump assembly according to claim 5, it is characterised in that：In the step 1)
First melting furnace is preheated, preheating temperature is 160-180 DEG C, and preheating time is 10 minutes, and fusion temperature is less than 750 DEG C, is protected
Molten aluminum is held in liquid.
7. a kind of production technology of automobile engine oil pump assembly according to claim 5 or 6, it is characterised in that：The step
1) gas used when degasification is nitrogen in, and fusion temperature control is at 650 DEG C or so.
8. a kind of production technology of automobile engine oil pump assembly according to claim 5, it is characterised in that：In the step 2)
When carrying out die casting by high pressure die casting machine, first mold is preheated, preheating temperature reaches 180-200 DEG C.
9. a kind of production technology of automobile engine oil pump assembly according to claim 5 or 8, it is characterised in that：The step
2) in after the completion of die casting, supercharging and pressurize are carried out, pressure total value after supercharged is 60-220MPa, and the dwell time is 5-15 points
Clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810398560.5A CN108661902A (en) | 2018-04-28 | 2018-04-28 | A kind of automobile engine oil pump assembly and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810398560.5A CN108661902A (en) | 2018-04-28 | 2018-04-28 | A kind of automobile engine oil pump assembly and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108661902A true CN108661902A (en) | 2018-10-16 |
Family
ID=63780402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810398560.5A Pending CN108661902A (en) | 2018-04-28 | 2018-04-28 | A kind of automobile engine oil pump assembly and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108661902A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881200A (en) * | 2010-06-04 | 2010-11-10 | 湖南机油泵股份有限公司 | Innercap rotor oil pump |
| CN101915137A (en) * | 2010-06-17 | 2010-12-15 | 重庆长安汽车股份有限公司 | Integrated structure of engine front housing and oil pump assembly |
| CN203532089U (en) * | 2013-09-23 | 2014-04-09 | 浙江宏鼎汽摩配件有限公司 | Timing chain cover |
| CN203743802U (en) * | 2014-02-24 | 2014-07-30 | 北京汽车动力总成有限公司 | Oil pump assembly |
| CN105371090A (en) * | 2015-12-14 | 2016-03-02 | 联禾厚普（太仓）精密机械有限公司 | Pressure-stabilized engine oil pump |
-
2018
- 2018-04-28 CN CN201810398560.5A patent/CN108661902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881200A (en) * | 2010-06-04 | 2010-11-10 | 湖南机油泵股份有限公司 | Innercap rotor oil pump |
| CN101915137A (en) * | 2010-06-17 | 2010-12-15 | 重庆长安汽车股份有限公司 | Integrated structure of engine front housing and oil pump assembly |
| CN203532089U (en) * | 2013-09-23 | 2014-04-09 | 浙江宏鼎汽摩配件有限公司 | Timing chain cover |
| CN203743802U (en) * | 2014-02-24 | 2014-07-30 | 北京汽车动力总成有限公司 | Oil pump assembly |
| CN105371090A (en) * | 2015-12-14 | 2016-03-02 | 联禾厚普（太仓）精密机械有限公司 | Pressure-stabilized engine oil pump |
Non-Patent Citations (2)
| Title |
|---|
| 中国内燃机工业协会《中国内燃机工业年鉴》编委会编: "《中国内燃机工业年鉴2003年》", 31 January 2001, 上海交通大学出版社 * |
| 叶莉莉等主编: "《压铸成型工艺及模具设计》", 31 December 2010, 北京理工大学出版社 * |
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Application publication date: 20181016 |