CN108894847A - A kind of direct-push single-chamber pressurization becomes the control system of row's lubricating oil pump - Google Patents
A kind of direct-push single-chamber pressurization becomes the control system of row's lubricating oil pump Download PDFInfo
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- CN108894847A CN108894847A CN201810933783.7A CN201810933783A CN108894847A CN 108894847 A CN108894847 A CN 108894847A CN 201810933783 A CN201810933783 A CN 201810933783A CN 108894847 A CN108894847 A CN 108894847A
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- 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
- 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
- F01M1/16—Controlling lubricant pressure or quantity
-
- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The control system for becoming row's lubricating oil pump is pressurized the present invention provides a kind of direct-push single-chamber, including variable displacement vane pump, main oil gallery, pilot valve, variable displacement vane pump includes feedback oil pocket, variable sliding block and variable spring, feedback oil pocket and variable spring are located at the two sides of variable sliding block, in feedback oil pocket under oil pressure and the effect of variable spring elastic force, variable sliding block can be generated in rotor chamber and be moved radially；Pilot valve includes valve body, spool and spring, and the first control chamber, the second control chamber, spring cavity are equipped between spool and valve interior wall；Pilot valve is located at main oil gallery and feeds back on the oil circuit between oil pocket, main oil gallery is connected respectively to the first control chamber and the second control chamber by two independent oil circuits, always the pressure oil from main oil gallery is full of in first control chamber, oil circuit between second control chamber and main oil gallery is equipped with a switch electromagnetic valve, as spool is in the intracorporal movement of valve, can be at communicating between the first control chamber and feedback oil pocket or off-state.
Description
Technical field
The present invention relates to lubricating system of IC engine technical field, in particular to a kind of single-chamber feedback variable displacement vane pump
Control system.
Background technique
The effect of lubricating oil pump be each slipper that lubricating oil is supplied to engine to ensure its normal work,
Power source come from engine itself, the flow of exit end machine oil be it is directly proportional with the revolving speed of engine, due to engine
Revolving speed be a variable, between required flow of lubrication and engine speed be not be proportional relation, therefore, work as hair
Motivation works in high-velocity section, it may appear that the excessive problem of oil flow rate in turn results in the waste of engine power.
In the prior art, there are mainly two types of modes for the flow control of lubricating oil pump, and one is pressure release is arranged in the outlet end of pump
Valve, in this way, as revolving speed gradually rises, the outlet oil pressure of lubricating oil pump is stepped up when engine operation is in slow-speed of revolution section；
When engine enters high revolving speed section, the outlet oil pressure of lubricating oil pump is higher than the preset pressure value of relief valve, and relief valve is
It starts to work, discharge part machine oil, so that engine oil pressure be made to maintain a steady state value.
Another kind is the lubricating oil pump using changeable flow, and such lubricating oil pump is equipped with a mechanical flow control machine
Structure, which usually feeds back driving by the oil pressure of lubricating oil pump exit end, for example, vane-type variable flow machine oil
Pump.It is compared with the first scheme, the lubricating oil pump of such changeable flow is conducive to improve the greasy property of high engine speeds section, but
Since the section that it is adjusted is few, oil pump capacity reacting condition postpones in operational process, and engine oil pressure fluctuation range is big, therefore simultaneously
The waste problem of the lubrication problem or engine power that cannot be fully solved when high engine speeds rotation.
As engine lubrication system lubricating oil pump becomes the increasingly developed and universal of Displacement Technology, vane type lubricating oil pump is obtained
It is widely applied, existing vane pump includes that single-acting chamber feedback and double acting chamber feed back two kinds of variable formats, wherein single-acting chamber
Feedback can be designed to level-one variable displacement mode, can realize MAP control by electrohydraulic proportional control valve, double acting chamber feedback can
To be designed to two-stage variable displacement mode.
Summary of the invention
The control system for becoming row's lubricating oil pump is pressurized the technical problem to be solved in the present invention is to provide a kind of direct-push single-chamber, it should
Control system can be realized single-chamber two-stage variable displacement mode.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of direct-push single-chamber pressurization change row's machine
The control system of oil pump, including variable displacement vane pump, main oil gallery, oil sump, pilot valve, the variable displacement vane pump include
The pump housing, feedback oil pocket, rotor, variable sliding block and variable spring, the feedback oil pocket and variable spring are located at the variable
The two sides of sliding block, in feedback oil pocket under oil pressure and the effect of variable spring elastic force, the variable sliding block can produce in rotor chamber
Life moves radially；The pilot valve includes valve body, spool and spring, and the first control is equipped between the spool and valve interior wall
Chamber, the second control chamber, spring cavity；The pilot valve is located at main oil gallery and feeds back on the oil circuit between oil pocket, and the main oil gallery is logical
Cross the first control chamber and the second control chamber that two independent oil circuits are connected respectively to the pilot valve, in the first control chamber always
Full of the pressure oil from main oil gallery, the oil circuit between the second control chamber and main oil gallery is equipped with a switch electromagnetic valve, with
Spool can be at communicating between the first control chamber and feedback oil pocket or off-state in the intracorporal movement of valve.
As a kind of perferred technical scheme, the position of corresponding first control chamber is equipped with main oil on the valve body of the pilot valve
Pipeline joint, the position of corresponding second control chamber is equipped with switch electromagnetic valve interface on the valve body, corresponds to spring cavity on the valve body
Position be equipped with gas vent, feedback oil pocket interface is additionally provided on the valve body, as spool is in the intracorporal movement of valve, the feedback
It can be at communicating between oil pocket interface and the first control chamber or off-state；The switch electromagnetic valve is equipped with P mouthfuls, A mouthfuls and T mouthfuls,
It is wherein communicated with main oil gallery for P mouthfuls, A mouthfuls communicate with the second control chamber of pilot valve, and T mouthfuls communicate with oil sump；The main oil gallery connects
Mouth is communicated by oil circuit with main oil gallery, and the feedback oil pocket interface is communicated by oil circuit with feedback oil pocket；
Become the discharge capacity stage in level-one, under control of the ecu, the P mouth of switch electromagnetic valve is connected to A mouthfuls, and main oil gallery pressure oil passes through
Switch electromagnetic valve enters the second control chamber of pilot valve, and in this stage, the first control chamber and the second control chamber of pilot valve are filled
Full main oil gallery pressure oil；Before the engine oil pressure of main oil gallery does not reach the low pressure variable pressure point of setting, the feedback oil
It is in close state between chamber interface and the first control chamber, is supplied in feedback oil pocket without oil pressure, this variations per hour sliding block and rotor
Eccentricity is maximum；When the engine oil pressure of main oil gallery reaches the low pressure variable pressure point of setting, pilot valve core is in the first control
It is mobile to spring cavity under chamber and the effect of the engine oil pressure of the second control chamber, make between the feedback oil pocket interface and the first control chamber
It communicates, the pressure oil in the first control chamber enters in feedback oil pocket, and variable sliding block compression variable spring is pushed to carry out radial shifting
It is dynamic, reduce the eccentricity of variable sliding block and rotor, to reduce output displacement；
When switch electromagnetic valve is switched to another working condition under control of the ecu, the P mouth of switch electromagnetic valve is not connected to A mouthfuls,
The A mouth of switch electromagnetic valve is connected to T mouthfuls, and system enters the second level variable displacement stage, in the second level variable displacement stage, pilot valve
Full of main oil gallery pressure oil in first control chamber, the second control chamber is interior to supply without oil pressure；It is not reached in the engine oil pressure of main oil gallery
It to before the high pressure variable pressure spot of setting, is in close state, feeds back between the feedback oil pocket interface and the first control chamber
It is supplied in oil pocket without oil pressure, the eccentricity of this variations per hour sliding block and rotor is maximum；When the engine oil pressure of main oil gallery reaches setting
When high pressure variable pressure spot, pilot valve core is mobile to spring cavity under the engine oil pressure effect of the first control chamber, makes described anti-
It is communicated between feedback oil pocket interface and the first control chamber, the pressure oil in the first control chamber enters in feedback oil pocket, pushes variable
Sliding block compression variable spring is moved radially, and reduces the eccentricity of variable sliding block and rotor, to reduce output displacement.
The present invention passes through the united application of pilot valve and switch electromagnetic valve, and so that single-chamber feedback vane pump is also able to achieve two-stage can
Become discharge capacity, and control simply, response is timely.Meanwhile the present invention improves the structure of variable sliding block, will feedback oil pocket and
Variable spring is respectively provided at the two sides of variable sliding block, is generated and is moved radially in rotor chamber by variable sliding block, to adjust variable
The eccentricity of sliding block and rotor, thus eliminating the spring lock blocks on conventional variable sliding block, make the internal structure of lubricating oil pump more
Step up to gather.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of control system of the invention in the non-variable stage；
Fig. 2 is the structural schematic diagram of control system of the invention in the variable stage；
Appended drawing reference is：
10 --- variable displacement vane pump
11 --- the pump housing 12 --- feedback oil pocket 13 --- rotors
14 --- variable sliding block 15 --- variable springs
20 --- pilot valve
21 --- valve body 22 --- spool 23 --- springs
24 --- the first control chamber 25 --- the second control chamber 26 --- spring cavitys
261 --- gas vent 27 --- main oil gallery interface 28 --- switch electromagnetic valve interfaces
29 --- feedback oil pocket interface
30 --- switch electromagnetic valve.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.In description of the invention
In, the meaning of " plurality " is two or more, unless otherwise specifically defined.In the description of the present invention, it needs
Illustrate, unless otherwise specified and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be
Mechanical connection or electrical connection, the connection being also possible to inside two elements can be directly connected, and can also pass through intermediary
It is indirectly connected, for the ordinary skill in the art, can understand the concrete meaning of the term as the case may be.
As shown in Figure 1, 2, the preferred embodiment of the present invention is：A kind of direct-push single-chamber pressurization becomes the control system of row's lubricating oil pump
System, including variable displacement vane pump 10, main oil gallery, oil sump, pilot valve 20, the variable displacement vane pump 10 include the pump housing
11, oil pocket 12, rotor 13, variable sliding block 14 and variable spring 15 are fed back, oil pocket 12 is fed back and variable spring 15 is located at change
The two sides for measuring sliding block 14, under the oil pressure and the effect of 15 elastic force of variable spring in feedback oil pocket 12, variable sliding block 14 can turn
The intracavitary generation of son moves radially；Pilot valve 20 includes valve body 21, spool 22 and spring 23, the spool 22 and 21 inner wall of valve body it
Between be equipped with the first control chamber 24, the second control chamber 25, spring cavity 26；The pilot valve 20 be located at main oil gallery and feedback oil pocket 12 it
Between oil circuit on, the main oil gallery is connected respectively to 24 He of the first control chamber of the pilot valve 20 by two independent oil circuits
Second control chamber 25, is full of the pressure oil from main oil gallery in the first control chamber 24 always, the second control chamber 25 and main oil gallery it
Between oil circuit be equipped with a switch electromagnetic valve 30, with movement of the spool 22 in valve body 21, the first control chamber 24 and feedback
It can be at communicating between oil pocket 12 or off-state.
The position of corresponding first control chamber 24 is equipped with main oil gallery interface 27 on the valve body 21 of pilot valve 20, on the valve body 21
The position of corresponding second control chamber 25 is equipped with switch electromagnetic valve interface 28, and the position that spring cavity 26 is corresponded on the valve body 21 is equipped with
Gas vent 261 is additionally provided with feedback oil pocket interface 29 on the valve body 21, described anti-with movement of the spool 22 in valve body 21
It can be at communicating between feedback oil pocket interface 29 and the first control chamber 24 or off-state；The switch electromagnetic valve 30 is equipped with P mouthfuls, A
Mouthful and T mouthfuls, wherein communicated with main oil gallery for P mouthfuls, A mouthfuls communicate with the second control chamber 25 of pilot valve 20, and T mouthfuls communicate with oil sump；
The main oil gallery interface 27 is communicated by oil circuit with main oil gallery, and the feedback oil pocket interface 29 passes through oil circuit and feedback 12 phase of oil pocket
It is logical；
Become the discharge capacity stage in level-one, under control of the ecu, the P mouth of switch electromagnetic valve 30 is connected to A mouthfuls, and main oil gallery pressure oil is logical
The second control chamber 25 that switch electromagnetic valve 30 enters pilot valve 20 is crossed, in this stage, the first control chamber 24 of pilot valve 20 and the
Two control chambers 25 are each filled with main oil gallery pressure oil；The engine oil pressure of main oil gallery do not reach setting low pressure variable pressure point it
Before, it is in close state between the feedback oil pocket interface 29 and the first control chamber 24, is supplied in feedback oil pocket 12 without oil pressure, this
The eccentricity of variations per hour sliding block 14 and rotor 13 is maximum；When the engine oil pressure of main oil gallery reaches the low pressure variable pressure point of setting
When, pilot valve core 22 is mobile to spring cavity 26 under the effect of the engine oil pressure of the first control chamber 24 and the second control chamber 25, makes
It is communicated between the feedback oil pocket interface 29 and the first control chamber 24, the pressure oil in the first control chamber 24 enters feedback oil pocket
In 12, pushes variable sliding block 14 to compress variable spring 15 and moved radially, subtract variable sliding block 14 and the eccentricity of rotor 13
It is few, to reduce output displacement；
When switch electromagnetic valve 30 is switched to another working condition under control of the ecu, the P mouth of switch electromagnetic valve 30 with A mouthfuls not
Connection, A mouthfuls are connected to T mouthfuls, and system enters the second level variable displacement stage, in the second level variable displacement stage, the first of pilot valve 20
Full of main oil gallery pressure oil in control chamber 24, the second control chamber 25 is interior without oil pressure supply；It is not reached in the engine oil pressure of main oil gallery
To before the high pressure variable pressure spot of setting, it is in close state between the feedback oil pocket interface 29 and the first control chamber 24,
It feeds back in oil pocket 12 and is supplied without oil pressure, the eccentricity of this variations per hour sliding block 14 and rotor 13 is maximum；When the engine oil pressure of main oil gallery
When reaching the high pressure variable pressure spot of setting, pilot valve core 22 is under the engine oil pressure effect of the first control chamber 24 to spring cavity
26 is mobile, makes to communicate between the feedback oil pocket interface 29 and the first control chamber 24, and the pressure oil in the first control chamber 24 enters
Into feedback oil pocket 12, pushes variable sliding block 14 to compress variable spring 15 and moved radially, make variable sliding block 14 and rotor 13
Eccentricity reduce, to reduce output displacement.
The present invention passes through the united application of pilot valve 20 and switch electromagnetic valve 30, and single-chamber feedback vane pump is made also to be able to achieve two
Grade variable displacement, and control simply, response is timely.Meanwhile the present invention improves the structure of variable sliding block 14, will feed back
Oil pocket 12 and variable spring 15 are respectively provided at the two sides of variable sliding block 14, generate radial shifting in rotor chamber by variable sliding block 14
Dynamic, to adjust the eccentricity of variable sliding block 14 Yu rotor 13, thus eliminating the spring lock blocks on conventional variable sliding block, make machine
The internal structure of oil pump is more compact.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.
Claims (2)
1. a kind of direct-push single-chamber pressurization becomes the control system of row's lubricating oil pump, including variable displacement vane pump（10）, main oil gallery, elder generation
Pilot valve（20）, it is characterised in that：The variable displacement vane pump（10）Including the pump housing（11）, feedback oil pocket（12）, rotor（13）,
Variable sliding block（14）And variable spring（15）, the feedback oil pocket（12）And variable spring（15）It is located at the variable sliding block
（14）Two sides, feedback oil pocket in oil pressure and variable spring elastic force effect under, the variable sliding block（14）It can be in rotor
Intracavitary generation moves radially；The pilot valve（20）Including valve body（21）, spool（22）And spring（23）, the spool（22）With
Valve body（21）The first control chamber is equipped between inner wall（24）, the second control chamber（25）, spring cavity（26）；The pilot valve（20）Position
In main oil gallery and feedback oil pocket（12）Between oil circuit on, the main oil gallery is connected respectively to described by two independent oil circuits
Pilot valve（20）The first control chamber（24）With the second control chamber（25）, the first control chamber（24）Inside always full of from main oil gallery
Pressure oil, the second control chamber（25）Oil circuit between main oil gallery is equipped with a switch electromagnetic valve（30）, with spool
（22）In valve body（21）Interior movement, the first control chamber（24）With feedback oil pocket（12）Between can be at communicating or off-state.
2. the control system that direct-push single-chamber pressurization according to claim 1 becomes row's lubricating oil pump, it is characterised in that：The elder generation
Pilot valve（20）Valve body（22）Upper the first control chamber of correspondence（24）Position be equipped with main oil gallery interface（27）, the valve body（22）On
Corresponding second control chamber（25）Position be equipped with switch electromagnetic valve interface（28）, the valve body（22）Upper corresponding spring cavity（26）'s
Position is equipped with gas vent（261）, the valve body（22）On be additionally provided with feedback oil pocket interface（29）, with spool（22）In valve body
（21）Interior movement, the feedback oil pocket interface（29）With the first control chamber（24）Between can be at communicating or off-state；Institute
State switch electromagnetic valve（30）It equipped with P mouthfuls, A mouthfuls and T mouthfuls, is wherein communicated with main oil gallery for P mouthfuls, A mouthfuls and pilot valve（20）Second control
Chamber processed（25）It communicates, T mouthfuls communicate with oil sump；The main oil gallery interface is communicated by oil circuit with main oil gallery, the feedback oil pocket
Interface（29）Pass through oil circuit and feedback oil pocket（12）It communicates；
Become discharge capacity stage, under control of the ecu, switch electromagnetic valve in level-one（30）P mouth be connected to A mouthfuls, main oil gallery pressure oil
Pass through switch electromagnetic valve（30）Into pilot valve（20）The second control chamber（25）, in this stage, pilot valve（20）First control
Chamber processed（24）With the second control chamber（25）It is each filled with main oil gallery pressure oil；The low of setting is not reached in the engine oil pressure of main oil gallery
Before pressure variable amount pressure spot, the feedback oil pocket interface（29）With the first control chamber（24）Between be in close state, feedback oil
Chamber（12）Interior no oil pressure supply, this variations per hour sliding block（14）With rotor（13）Eccentricity it is maximum；When the engine oil pressure of main oil gallery
When reaching the low pressure variable pressure point of setting, pilot valve core（22）In the first control chamber（24）With the second control chamber（25）Machine
To spring cavity under oil pressure effect（26）It is mobile, make the feedback oil pocket interface（29）With the first control chamber（24）Between communicate,
First control chamber（29）Interior pressure oil enters feedback oil pocket（12）It is interior, push variable sliding block（14）Compress variable spring（15）
It is moved radially, makes variable sliding block（14）With rotor（13）Eccentricity reduce, to reduce output displacement；
Work as switch electromagnetic valve（30）When being switched to another working condition under control of the ecu, switch electromagnetic valve（30）P mouth and A
Mouth is not connected to, and A mouthfuls are connected to T mouthfuls, and system enters the second level variable displacement stage, in the second level variable displacement stage, pilot valve（20）
The first control chamber（24）It is interior oily full of main oil gallery pressure, the second control chamber（25）Interior no oil pressure supply；In the machine oil of main oil gallery
Before pressure does not reach the high pressure variable pressure spot of setting, the feedback oil pocket interface（29）With the first control chamber（24）Between
It is in close state, feeds back oil pocket（12）Interior no oil pressure supply, this variations per hour sliding block（14）With rotor（13）Eccentricity it is maximum；
When the engine oil pressure of main oil gallery reaches the high pressure variable pressure spot of setting, pilot valve core（22）In the first control chamber（24）'s
To spring cavity under engine oil pressure effect（26）It is mobile, make the feedback oil pocket interface（29）With the first control chamber（24）Between phase
It is logical, the first control chamber（24）Interior pressure oil enters feedback oil pocket（12）It is interior, push variable sliding block（14）Compress variable spring
（15）It is moved radially, makes variable sliding block（14）With rotor（13）Eccentricity reduce, to reduce output displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810933783.7A CN108894847B (en) | 2018-08-16 | 2018-08-16 | Control system of direct-push type single-cavity supercharging variable-discharge oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810933783.7A CN108894847B (en) | 2018-08-16 | 2018-08-16 | Control system of direct-push type single-cavity supercharging variable-discharge oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108894847A true CN108894847A (en) | 2018-11-27 |
| CN108894847B CN108894847B (en) | 2023-10-10 |
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ID=64354968
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810933783.7A Active CN108894847B (en) | 2018-08-16 | 2018-08-16 | Control system of direct-push type single-cavity supercharging variable-discharge oil pump |
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Cited By (5)
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| CN110017190A (en) * | 2019-05-14 | 2019-07-16 | 富奥汽车零部件股份有限公司 | A kind of method and device of the secondary variable lubricating oil pump of combination valve control |
| CN111043510A (en) * | 2019-12-24 | 2020-04-21 | 华域皮尔博格泵技术有限公司 | A vane oil pump |
| CN111637054A (en) * | 2020-05-28 | 2020-09-08 | 奇瑞汽车股份有限公司 | Vane pump |
| CN113719332A (en) * | 2020-05-25 | 2021-11-30 | 比亚迪股份有限公司 | Engine lubricating system and engine |
| CN114370594A (en) * | 2021-12-29 | 2022-04-19 | 四川航天世源科技有限公司 | A variable displacement oil pump with variable pressure |
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| CN110017190A (en) * | 2019-05-14 | 2019-07-16 | 富奥汽车零部件股份有限公司 | A kind of method and device of the secondary variable lubricating oil pump of combination valve control |
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| CN114370594A (en) * | 2021-12-29 | 2022-04-19 | 四川航天世源科技有限公司 | A variable displacement oil pump with variable pressure |
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| Publication number | Publication date |
|---|---|
| CN108894847B (en) | 2023-10-10 |
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Address after: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee after: Hunan Meihu Intelligent Manufacturing Co.,Ltd. Country or region after: China Address before: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee before: Hunan Oil Pump Co.,Ltd. Country or region before: China |
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