CN107489878B - A kind of engine and its lubricating oil pump - Google Patents
A kind of engine and its lubricating oil pump Download PDFInfo
- Publication number
- CN107489878B CN107489878B CN201610991834.2A CN201610991834A CN107489878B CN 107489878 B CN107489878 B CN 107489878B CN 201610991834 A CN201610991834 A CN 201610991834A CN 107489878 B CN107489878 B CN 107489878B
- Authority
- CN
- China
- Prior art keywords
- oil pump
- lubricating oil
- sliding block
- armature spindle
- pressure 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.)
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Classifications
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- 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 invention discloses a kind of lubricating oil pump, including lubricating oil pump ontology and cover board, it is equipped with stator, rotor and armature spindle between the lubricating oil pump ontology and the cover board, further includes rotor axis adjustment device, for radially adjusting its position relative to the stator in the armature spindle.Lubricating oil pump provided by the present invention, by the way that the rotor axis adjustment device is arranged, realize the movement of the armature spindle in the radial direction thereof, and then realize the change of the stator Yu the rotor relative position, the discharge capacity continuous variable of lubricating oil pump, and can be according to the operating condition of engine, the armature spindle is controlled by the rotor axis adjustment device, huge discharge or small displacement are selected, to be suitable for the demand of different operating conditions, reduces the power dissipation of lubricating oil pump.The invention also discloses a kind of engines including said engine oil pump.
Description
Technical field
The present invention relates to lubricating utensil fields, more particularly to a kind of lubricating oil pump.Moreover, it relates to which one kind includes
The engine of said engine oil pump.
Background technique
Along with the rapid development of automotive engineering, energy-saving and emission-reduction are automotive field important topics, and improving engine efficiency is
The effective means of energy-saving and emission-reduction specifically can improve engine efficiency by way of reducing power loss.
Demand of the engine to lubricating oil pump is the operating condition with engine and changes, and the power of current lubricating oil pump consumption
It is to change with engine speed and change, in the course of work of engine, there is power losses for lubricating oil pump.
In the prior art, vane pump includes rotor, stator and several blades composition, using the bias of rotor and stator, is drawn
It is flexible on stator to play blade, a closing chamber is formed between two adjacent blades and rotor and stator, since blade exists
Have during spinning flexible, causes the volume change of closing chamber, realize the work of lubricating oil pump.
However, demand of the engine to lubricating oil pump is the operating condition with engine and changes, and current lubricating oil pump consumption
Power be with engine speed change and change, when engine speed increase when, the discharge capacity of lubricating oil pump is stepped up, and is being sent out
In the course of work of motivation, there is power losses for lubricating oil pump.
Therefore, the power loss for how reducing lubricating oil pump, is a technical problem that technical personnel in the field need to solve at present.
Summary of the invention
The object of the present invention is to provide a kind of lubricating oil pump, which realizes institute by the position of the change armature spindle
The change of stator Yu the rotor relative position is stated, to be suitable for the demand of different operating conditions, reduces the power dissipation of lubricating oil pump.This
The another object of invention is to provide a kind of engine including said engine oil pump.
To achieve the above object, the invention provides the following technical scheme:
A kind of lubricating oil pump, including lubricating oil pump ontology and cover board, between the lubricating oil pump ontology and the cover board be equipped with stator,
Rotor and armature spindle further include rotor axis adjustment device, for the armature spindle radially adjusting its relative to described fixed
The position of son.
Preferably, the rotor axis adjustment device includes the sliding block for driving the armature spindle to move along the radial, institute
State that armature spindle is rotatably plugged in the sliding block and the two being capable of opposite sliding.
Preferably, the glide direction of the sliding block and the armature spindle are axially formed acute angle.
It preferably, further include for installing the sliding block and being arranged at the lubricating oil pump ontology or the cover board
On sliding block mounting portion, the inside of the sliding block mounting portion has the pressure chamber of connection pressure source, to push the cunning being located therein
Block sliding.
Preferably, the pressure chamber is located at the side of the sliding block, and is connected to the pressure source, the sliding block it is another
Side is equipped with reset components.
Preferably, the pressure chamber is connected to hydraulic supply and discharge oil pipe line.
Preferably, the sliding block mounting portion is with the cover board with the lubricating oil pump ontology and/or the sliding block mounting portion
Integral structure.
Preferably, it is equipped with sliding block mounting portion on the lubricating oil pump ontology and the cover board, which further includes adjusting
Valve, the filler volume in pressure chamber for adjusting two sliding block mounting portions respectively.
Preferably, the sliding block in the pressure chamber of the cover board, which has, supplies the perforative through-hole of the armature spindle, the lubricating oil pump
Sliding block in the pressure chamber of ontology has the blind hole for being used to support described armature spindle one end, and the other end of the armature spindle is equipped with
Driving wheel.
The present invention also provides a kind of engines, including lubricating oil pump described in above-mentioned any one.
Lubricating oil pump provided by the present invention, including lubricating oil pump ontology and cover board, the lubricating oil pump ontology and the cover board it
Between be equipped with stator, rotor and armature spindle, further include rotor axis adjustment device, in its phase of the radially adjusting of the armature spindle
For the position of the stator.The lubricating oil pump realizes the armature spindle in its radial direction by the way that the rotor axis adjustment device is arranged
Upper movement, and then realize the change of the stator and the rotor relative position, the discharge capacity continuous variable of lubricating oil pump, and can basis
The operating condition of engine controls the position of the armature spindle by the rotor axis adjustment device, selects huge discharge or small displacement,
To be suitable for the demand of different operating conditions, the power dissipation of lubricating oil pump is reduced.
It in a preferred embodiment, further include for installing the sliding block and being arranged at the lubricating oil pump sheet
Sliding block mounting portion on body or the cover board, the inside of the sliding block mounting portion has the pressure chamber of connection pressure source, to push away
The dynamic sliding block sliding being located therein.Above-mentioned setting, the pressure source are that the movement of the sliding block provides power, the shifting of the sliding block
It is dynamic to drive the armature spindle mobile, therefore, when needing to adjust the position of the armature spindle, it is only necessary to control the pressure of the pressure source
Power, and then change the pressure in the pressure chamber, simple to operate, the power loss that can effectively solve lubricating oil pump is asked
Topic.
Engine provided by the present invention is pumped equipped with said engine oil, since the lubricating oil pump has above-mentioned technique effect, because
This, the engine equipped with the lubricating oil pump should also be as having corresponding technical effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of the schematic diagram of the section structure of specific embodiment of lubricating oil pump provided by the present invention；
Wherein: 1- cover board, 2- lubricating oil pump ontology, 3- stator, 4- rotor, 41- blade, 5- armature spindle, 6- sliding block mounting portion,
61- sliding block, 62- pressure chamber, 63- reset components, 64- oil duct, 7- driving wheel, 71- fastener.
Specific embodiment
Core of the invention is to provide a kind of lubricating oil pump, which can be significantly reduced the power dissipation of lubricating oil pump, section
It can emission reduction.Another core of the invention is to provide a kind of engine including said engine oil pump.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of specific embodiment of lubricating oil pump provided by the present invention.
In this embodiment, lubricating oil pump includes lubricating oil pump ontology 2, cover board 1, stator 3, rotor 4, armature spindle 5 and rotor
Axis adjustment device.
Wherein, lubricating oil pump ontology 2 and cover board 1 collectively form the main structure of lubricating oil pump, stator 3, rotor 4 and armature spindle
5 are arranged between lubricating oil pump ontology 2 and cover board 1, and armature spindle 5 passes through cover board 1, are connected with driving wheel 7.
Rotor axis adjustment device is for adjusting the position of armature spindle 5 radially, i.e., armature spindle 5 is perpendicular to own axes side
It is adjusted up its position relative to stator 3, i.e. position of the adjusting rotor 4 relative to stator 3, to realize to machine oil pumpage
Change.
The lubricating oil pump by setting rotor axis adjustment device, realize armature spindle 5 move radially, and then realize stator 3 with
The change of 4 relative position of rotor, the discharge capacity continuous variable of lubricating oil pump, and can be adjusted according to the operating condition of engine by armature spindle
Device controls the moving distance of armature spindle 5, selects huge discharge or small displacement, to be suitable for the demand of different operating conditions, reduces machine
The power dissipation of oil pump.
Further, rotor axis adjustment device includes the sliding block 61 moved radially for driving armature spindle 5 along armature spindle 5,
Armature spindle 5 is rotatably plugged in sliding block 61, and both armature spindle 5 and sliding block 61 being capable of opposite slidings.
Specifically, the glide direction of sliding block 61 and armature spindle 5 are axially formed acute angle, i.e. sliding block 61 moves outward, band
Dynamic armature spindle 5 moves along the radial, it is preferred that sliding block 61 can tilt down sliding or upward tilt slide certainly can also
Directly armature spindle 5 is driven to move up and down to slide along the vertical direction, certainly, in order to facilitate the setting of sliding block mounting portion 6, sliding block 61
Preferably tilting down sliding, i.e. the extending direction of sliding block mounting portion 6 tilts down, meanwhile, armature spindle 5 is rotatably plugged in
In sliding block 61 and the two being capable of opposite sliding.
Further, in order to realize the sliding purpose of sliding block, rotor axis adjustment device further includes for installing sliding block 61 simultaneously
And it is arranged at the sliding block mounting portion 6 on lubricating oil pump ontology 2 or cover board 1, the inside of sliding block mounting portion 6 has connection pressure
The pressure chamber 62 in source, to push the sliding block 61 being located therein to slide.
What needs to be explained here is that in order to guarantee the mobile stationarity of armature spindle 5, preferably in lubricating oil pump ontology 2 and cover board 1
On be respectively provided with sliding block mounting portion 6, the inside of sliding block mounting portion 6 has cavity, and the pressure chamber of connection pressure source is provided in cavity
62, to push the sliding block 61 being located therein to slide；Sliding block 61 can drive the moving radially along armature spindle 5 of armature spindle 5 when sliding.
Certainly, rotor axis adjustment device may be other structures, such as directly install moving parts on armature spindle 5,
Such as the structures such as cylinder, the moving radially along itself of armature spindle 5 is driven, to realize the change of rotor 4 Yu 3 relative position of stator,
Certainly, such structure inconvenience operation and installation, therefore, rotor axis adjustment device are preferably knot provided in the present embodiment
Structure.
What needs to be explained here is that above content mainly with sliding block 61 to two Slideslips, drive armature spindle 5 move up and down and
It introduces, certainly, armature spindle 5 may also be lateral movement, or moving along other angles, at this point, the movement of sliding block 61
The extending direction of direction and sliding block mounting portion 6 should also be as changing therewith, to adapt to the movement of armature spindle 5.
Above-mentioned setting, pressure source are that the movement of sliding block 61 provides power, and the mobile drive armature spindle 5 of sliding block 61 is mobile, because
This, when needing to adjust the position of armature spindle 5, it is only necessary to control the pressure of pressure source, and then the pressure changed in pressure chamber 62 is
Can, it is simple to operate, it can effectively solve the power loss problem of lubricating oil pump.
Specifically, pressure source can be machine oil source, i.e. pressure chamber 62 is connected to hydraulic supply and discharge oil pipe line, in supply and discharge oil pipe line
In machine oil feed pressure chamber 62, when the pressure of machine oil changes, machine oil flows in or out pressure chamber 62, realizes pressure chamber 62
The change of pressure, and then push sliding block 61 mobile.
Certainly, the reset of sliding block 61 provides power, the i.e. side that is located at sliding block 61 of pressure chamber 62 by reset components 63,
And it is connected to pressure source, the other side of sliding block 61 is equipped with reset components 63, and reset components 63 are preferably reset spring, i.e. pressure chamber
When pressure in 62 increases, it is mobile to will push sliding block 61, at this point, reset spring is compressed, the pressure reduction in pressure chamber 62
When, sliding block 61 pushes 61 opposite direction of sliding block under the promotion of reset spring and moves, machine oil outflow pressure chamber 62, at this time armature spindle 5
Opposite direction is mobile.
On the basis of the respective embodiments described above, it is equipped with sliding block mounting portion 6 on lubricating oil pump ontology 2 and cover board 1, the machine oil
Pump further includes regulating valve, the filler volume in pressure chamber 62 for adjusting two sliding block mounting portions 6 respectively, specifically, adjusting
Saving valve can adjust according to the size of the pressure chamber 62 of two sliding block mounting portions 6 and respectively enter or be discharged in two pressure chambers 62
The number of filler.
More specifically, when in pressure chamber 62 filler be machine oil when, then should according to be located at lubricating oil pump ontology 2 and lid
The size of two pressure chambers 62 on plate 1 adjusts the oil level for respectively enteing or excluding in two pressure chambers 62, specifically
, should according to pressure chamber 62 along the cross section perpendicular to sliding block moving direction area judge, when pressure chamber 62 along perpendicular to
When the cross-sectional area of 61 moving direction of sliding block is larger, needing to fill the oil mass into pressure chamber should increase, and main purpose is
In order to realize that two sliding blocks 61 are identical in the amount of movement of armature spindle 5 radially, reduce the moment of flexure that armature spindle 5 is subject to.
It is of course also possible to which mobile drive armature spindle 5 movement by a sliding block 61 drives another sliding block 61 to move
Dynamic mode is realized, alternatively, only in one end of armature spindle 5, setting sliding block also may be used, it is not limited to side given by the present embodiment
Case.
Specifically, the regulating valve is specifically as follows OCV solenoid valve, OCV solenoid valve under the control of the controller, is adjusted and is flowed into
How much is machine oil in pressure chamber 62, to change the size of pressure in pressure chamber 62.
Preferably, sliding block mounting portion 6 is structure as a whole with lubricating oil pump ontology 2 and/or cover board 1, i.e., in cover board 1 or machine oil
In the casting process for pumping ontology 2, directly sliding block mounting portion 6 is integrally cast, the sliding block mounting portion 6 and machine oil of integral structure
The sliding block mounting portion 6 and cover board 1 of ontology 2 or integral structure are pumped, not only intensity is high, but also the sealing of pressure chamber 62 can be improved
Effect.
It should be noted that pressure chamber 62 is a part of sky encircled a city jointly by the side of sliding block mounting portion 6 and sliding block 61
Chamber, since sliding block 61 needs to slide along the inner wall of sliding block mounting portion 6, in order to realize sliding block 61 and sliding block mounting portion 6
Lubricant effect between inner wall has certain gap, so that pouring pressure chamber between sliding block 61 and the inner wall of sliding block mounting portion 6
62 part machine oil flows into the gap between sliding block 61 and the inner wall of sliding block mounting portion 6, is installed with reducing sliding block 61 and sliding block
Frictional force between 6 inner wall of portion.
On the basis of above-mentioned any embodiment, the sliding block 61 in the pressure chamber 62 of cover board 1 has to be run through for armature spindle 5
Through-hole, the sliding block 61 in the pressure chamber 62 of lubricating oil pump ontology 2 has the blind hole for being used to support 5 one end of armature spindle, armature spindle 5
The other end is equipped with driving wheel 7, is fixedly connected between driving wheel 7 and armature spindle 5 by fastener 71.
Specifically, the through-hole diameter of the sliding block 61 in the pressure chamber 62 of cover board 1 and the pressure chamber 62 of lubricating oil pump ontology 2
In sliding block 61 blind hole diameter, should all be slightly larger than armature spindle 5 diameter, i.e., have between armature spindle 5 and through-hole and blind hole
There is gap, to realize the opposite sliding between 5 own rotation of armature spindle and armature spindle 5 and sliding block 61.
It is somebody's turn to do what needs to be explained here is that the blind hole length of the sliding block 61 in the pressure chamber 62 of lubricating oil pump ontology 2 should be greater than
The lateral distance of sliding block 61, to prevent in the moving process of the sliding block 61, armature spindle 5 is detached from the blind hole of the sliding block 61.
Lubricating oil pump provided by the present embodiment, by increasing respectively on the basis of traditional lubricating oil pump at the both ends of armature spindle 5
Adding a sliding block 61, one end of sliding block 61 connects reset components 63, preferably elastomeric element, and the other end is equipped with pressure chamber 62, and
And support mounting hole also is provided for armature spindle 5 on sliding block 61, supporting is preferably clearance fit between mounting hole and armature spindle 5,
I.e. armature spindle 5 can be freely rotated in support mounting hole, and armature spindle 5 opposite with sliding block 61 can slide, meanwhile, in machine oil
Sliding block mounting portion 6 is increased separately on pump ontology 2 and cover board 1, the inside of sliding block mounting portion 6 is equipped with cavity, is located at sliding block in cavity
61 constitute pressure chamber 62, the position corresponding with pressure chamber 62 of sliding block mounting portion 6, respectively close to rotor 4 close to one end of rotor 4
Side design the oil duct 64 for flowing in or out pressure chamber 62 for machine oil.
Specifically, be located at the left and right sides sliding block mounting portion 6 on two oil ducts 64, respectively with 64 phase of high-pressure oil duct
Even, and by solenoid valve control oil pressure with the raising of 62 inner engine oil pressure of pressure chamber overcome the elastic force of reset components 63,
Two sliding blocks 61 are pushed down on, armature spindle 5 moves down, and then drives rotor 4 mobile, has adjusted the inclined of stator 3 and rotor 4
The heart, and then achieve the purpose that compounding machine oil pump capacity.
It should be noted that the sliding block mounting portion 6 being located on cover board 1 and lubricating oil pump ontology 2 is preferably symmetrical arranged,
Meanwhile sliding block 61 position and shape it is all the same, the pressure change in pressure chamber 62 should also be as unanimously, to guarantee armature spindle 5
Stress equalization, avoid armature spindle 5 two sides unbalance stress generate torque.Certainly, when being located at cover board 1 and lubricating oil pump ontology
Sliding block mounting portion 6 on 2 can also be realized by adjusting the different displacement of two sliding blocks 61 to rotor when being symmetrical arranged
The synchronous drive of axis 5.
The lubricating oil pump is specifically as follows vane pump, as shown in Figure 1, blade 41 is also equipped on rotor 4, it is of course also possible to
For impeller pump, when the lubricating oil pump is impeller pump, rotor 4 is internal rotor, and rotor 4 is outer rotor, and armature spindle 5 is interior turns
Sub- axis.
Other than said engine oil pump, the present invention also provides a kind of engine including said engine oil pump, the engines
Other Each parts refer to the prior art, repeats no more herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Lubricating oil pump provided by the present invention is described in detail above.Specific case used herein is to the present invention
Principle and embodiment be expounded, method and its core of the invention that the above embodiments are only used to help understand
Thought is thought.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
Claims (9)
1. a kind of lubricating oil pump, including lubricating oil pump ontology (2) and cover board (1), the lubricating oil pump ontology (2) and the cover board (1) it
Between be equipped with stator (3), rotor (4) and armature spindle (5), which is characterized in that further include rotor axis adjustment device, be used at described turn
Its position relative to the stator (3) of the radially adjusting of sub- axis (5)；The rotor axis adjustment device includes for driving
State the sliding block (61) that armature spindle (5) moves along the radial；It further include for installing the sliding block (61) and being arranged at institute
The sliding block mounting portion (6) on lubricating oil pump ontology (2) or the cover board (1) is stated, the inside of the sliding block mounting portion (6), which has, to be connected
The pressure chamber (62) of logical pressure source, to push the sliding block (61) being located therein sliding.
2. lubricating oil pump according to claim 1, which is characterized in that the armature spindle (5) is rotatably plugged in the cunning
In block (61) and the two being capable of opposite sliding.
3. lubricating oil pump according to claim 2, which is characterized in that the glide direction of the sliding block (61) and the armature spindle
(5) be axially formed acute angle.
4. lubricating oil pump according to claim 1, which is characterized in that the pressure chamber (62) is located at the one of the sliding block (61)
Side, and it is connected to the pressure source, the other side of the sliding block (61) is equipped with reset components (63).
5. lubricating oil pump according to claim 1, which is characterized in that the pressure chamber (62) is connected to hydraulic supply and discharge oil pipe line.
6. lubricating oil pump according to claim 1, which is characterized in that the sliding block mounting portion (6) on the lubricating oil pump ontology (2)
It is structure as a whole with the sliding block mounting portion (6) on the lubricating oil pump ontology (2) and/or the cover board (1) with the cover board (1).
7. lubricating oil pump according to any one of claims 1 to 6, which is characterized in that the lubricating oil pump ontology (2) and the lid
Sliding block mounting portion (6) are equipped on plate (1), which further includes regulating valve, for adjusting two sliding block installations respectively
Filler volume in the pressure chamber (62) in portion (6).
8. lubricating oil pump according to claim 7, which is characterized in that the sliding block in the pressure chamber (62) of the cover board (1)
(61) have and supply the armature spindle (5) perforative through-hole, sliding block (61) tool in the pressure chamber (62) of the lubricating oil pump ontology (2)
There is the blind hole for being used to support the armature spindle (5) one end, the other end of the armature spindle (5) is equipped with driving wheel (7).
9. a kind of engine, including lubricating oil pump, which is characterized in that the lubricating oil pump is described in claim 1 to 8 any one
Lubricating oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610991834.2A CN107489878B (en) | 2016-11-10 | 2016-11-10 | A kind of engine and its lubricating oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610991834.2A CN107489878B (en) | 2016-11-10 | 2016-11-10 | A kind of engine and its lubricating oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489878A CN107489878A (en) | 2017-12-19 |
| CN107489878B true CN107489878B (en) | 2019-03-22 |
Family
ID=60642142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610991834.2A Active CN107489878B (en) | 2016-11-10 | 2016-11-10 | A kind of engine and its lubricating oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489878B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052120A (en) * | 2010-11-27 | 2011-05-11 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN102788013A (en) * | 2011-05-19 | 2012-11-21 | 北汽福田汽车股份有限公司 | Variable pump, engine and automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039136A1 (en) * | 2005-10-06 | 2007-04-12 | Joma-Hydromechanic Gmbh | Vane cell pump |
-
2016
- 2016-11-10 CN CN201610991834.2A patent/CN107489878B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052120A (en) * | 2010-11-27 | 2011-05-11 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN102788013A (en) * | 2011-05-19 | 2012-11-21 | 北汽福田汽车股份有限公司 | Variable pump, engine and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489878A (en) | 2017-12-19 |
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Effective date of registration: 20181214 Address after: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Applicant after: Beiqi Futian Automobile Co., Ltd. Address before: 100102 No.1 Courtyard Building, Futong East Street, Chaoyang District, Beijing Applicant before: Auto (China) Co., Ltd. |
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