CN209163892U - A kind of control pressurer system based on fixed displacement lubricating oil pump - Google Patents
A kind of control pressurer system based on fixed displacement lubricating oil pump Download PDFInfo
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- CN209163892U CN209163892U CN201821712802.5U CN201821712802U CN209163892U CN 209163892 U CN209163892 U CN 209163892U CN 201821712802 U CN201821712802 U CN 201821712802U CN 209163892 U CN209163892 U CN 209163892U
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 55
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 49
- 239000003921 oil Substances 0.000 claims abstract description 237
- 239000010705 motor oil Substances 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 9
- 239000010721 machine oil Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
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- 230000001050 lubricating effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
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Abstract
The utility model provides a kind of control pressurer system based on fixed displacement lubricating oil pump, including fixed displacement lubricating oil pump, pilot valve, switch electromagnetic valve, pressure limiting valve, main oil gallery；The fixed displacement lubricating oil pump includes oil suction chamber and oil outlet chamber；The pressure limiting valve includes pressure feedback chamber, plunger, transporting room, oil suction chamber interface, oil outlet chamber interface, oil discharge outlet；Oil suction chamber interface is communicated with the oil suction chamber of fixed displacement lubricating oil pump, oil outlet chamber interface is communicated with the oil outlet chamber of fixed displacement lubricating oil pump, oil outlet chamber interface passes through transporting room always and communicates with the oil discharge outlet, pressure feedback chamber is communicated with main oil gallery, the intracavitary oil pressure of pressure feedback can influence the position of the plunger, and the difference of plunger position can then allow between oil suction chamber interface and oil outlet chamber interface in communicating or off-state；Pilot valve controls the on-off of the oil circuit on the oil circuit between main oil gallery and pressure feedback chamber, and switch electromagnetic valve then controls an on-off between control chamber and main oil gallery of pilot valve.
Description
Technical field
The utility model relates to lubricating system of IC engine technical field, in particular to a kind of pressure based on fixed displacement lubricating oil pump
Force 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.But this mode only has pressure release work
With pressure regulation ability is very weak.
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 first way, 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.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of control pressurer systems based on fixed displacement lubricating oil pump, should
Control system can be such that fixed displacement lubricating oil pump realizes and the consistent two-stage adjustable pressure mode of two-stage variable discharge capacity effect.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: one kind being based on fixed displacement lubricating oil pump
Control pressurer system, it is characterised in that: including fixed displacement lubricating oil pump, pilot valve, switch electromagnetic valve, pressure limiting valve, main oil gallery；Institute
Stating fixed displacement lubricating oil pump includes oil suction chamber and oil outlet chamber；The pressure limiting valve includes pressure feedback chamber, plunger, transporting room, oil suction chamber
Interface, oil outlet chamber interface, oil discharge outlet, valve pocket and return spring；The oil suction chamber phase of the oil suction chamber interface and fixed displacement lubricating oil pump
Logical, the oil outlet chamber interface is communicated with the oil outlet chamber of fixed displacement lubricating oil pump, and the oil outlet chamber interface passes through transporting room and institute always
It states oil discharge outlet to communicate, the pressure feedback chamber is communicated with main oil gallery, and the intracavitary oil pressure of the pressure feedback can influence the column
The position of plug, the difference of the plunger position can then allow be between the oil suction chamber interface and oil outlet chamber interface and communicate or break
Open state；The pilot valve includes valve body, spool and spring, and the first control chamber, the are equipped between the spool and valve interior wall
Two control chambers, spring cavity；For the pilot valve on the oil circuit between main oil gallery and pressure feedback chamber, the main oil gallery passes through two
The independent oil circuit of item is connected respectively to the first control chamber and the second control chamber of the pilot valve, is full of always in the first control chamber
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
It can be at communicating between the intracorporal movement of valve, the first control chamber and the pressure feedback chamber (41) of pressure limiting valve or off-state.
In one embodiment, the position of corresponding first control chamber is equipped with main oil gallery interface on the valve body of the pilot valve,
The position of corresponding second control chamber is equipped with switch electromagnetic valve interface on the valve body, and the position that spring cavity is corresponded on the valve body is set
There is gas vent, pressure feedback chamber interface is additionally provided on the valve body, as spool is in the intracorporal movement of valve, the pressure feedback chamber
It can be at communicating between interface and the first control chamber or off-state；The main oil gallery interface is communicated by oil circuit with main oil gallery,
The pressure feedback chamber interface is communicated by oil circuit with pressure feedback chamber；The switch electromagnetic valve is equipped with P mouthfuls, A mouthfuls and T mouthfuls,
Middle P mouthfuls communicates with main oil gallery, and A mouthfuls communicate with the second control chamber of pilot valve, and T mouthfuls communicate with oil sump；
In the level-one adjustable pressure stage, under control of the ecu, the P mouth of switch electromagnetic valve is connected to A mouthfuls, main oil gallery pressure
Oil enters the second control chamber of pilot valve by switch electromagnetic valve, in this stage, the first control chamber of pilot valve and the second control
Chamber is each filled with main oil gallery pressure oil；It is described before the engine oil pressure of main oil gallery does not reach the level-one vent pressure point of setting
It is in close state between pressure feedback chamber interface and the first control chamber, the intracavitary no oil pressure supply of pressure feedback, at this time fixed displacement
Pressure oil in lubricating oil pump oil outlet chamber is all flowed out from the oil discharge outlet of pressure limiting valve；When the engine oil pressure of main oil gallery reaches the one of setting
When grade vent pressure point, pilot valve core is moved under the effect of the engine oil pressure of the first control chamber and the second control chamber to spring cavity
It is dynamic, communicate the pressure feedback chamber interface with the first control chamber, the pressure oil in the first control chamber enters pressure feedback chamber
It is interior, it pushes the plunger of pressure limiting valve to be moved, communicates oil outlet chamber interface with oil suction chamber interface, fixed displacement lubricating oil pump is fuel-displaced at this time
Intracavitary partial pressure oil passes sequentially through oil outlet chamber interface, transporting room, oil suction chamber interface and flows back into oil suction chamber, another part pressure
Oily then oil discharge outlet outflow from pressure limiting valve, to reduce output pressure；
When switch electromagnetic valve is switched to another working condition under control of the ecu, the P mouth of switch electromagnetic valve with A mouthfuls not
Connection, A mouthfuls are connected to T mouthfuls, and system enters the second level adjustable pressure stage, in the second level adjustable pressure stage, the first control of pilot valve
It is oily to make the intracavitary main oil gallery pressure that is full of, is supplied in the second control chamber without oil pressure；Setting is not reached in the engine oil pressure of main oil gallery
Second level vent pressure point before, be in close state between the pressure feedback chamber interface and the first control chamber, pressure feedback
Intracavitary no oil pressure supply, the pressure oil in fixed displacement lubricating oil pump oil outlet chamber is all flowed out from the oil discharge outlet of pressure limiting valve at this time；Work as master
When the engine oil pressure of oil duct reaches the second level vent pressure point of setting, pilot valve core is acted in the engine oil pressure of the first control chamber
It is lower mobile to spring cavity, communicate the pressure feedback chamber interface with the first control chamber, the pressure oil in the first control chamber enters
It is intracavitary to pressure feedback, it pushes the plunger of pressure limiting valve to be moved, communicates oil outlet chamber interface with oil suction chamber interface, arrange surely at this time
Partial pressure oil in amount lubricating oil pump oil outlet chamber passes sequentially through oil outlet chamber interface, transporting room, oil suction chamber interface and flows back into oil suction chamber,
Another part pressure oil is then flowed out from the oil discharge outlet of pressure limiting valve, to reduce output pressure.
Control system provided by the utility model passes through the united application of pressure limiting valve, pilot valve, switch electromagnetic valve, makes to determine row
Amount lubricating oil pump is also able to achieve two-stage variable discharge capacity, and control it is simple, response in time, the system by the aperture of regulation pressure-limiting valve,
Come control lubricating oil pump output flow, thus achieve the effect that reduce power.The control system of the utility model both made full use of
The advantages of fixed displacement lubricating oil pump middle and slow speed of revolution volumetric efficiency height, stable structure, at low cost, good reliability, and assign fixed displacement
The ability of lubricating oil pump " second level becomes row ".Because fixed displacement lubricating oil pump has zero for vane-type variable flow machine oil pump
The advantages that part is few, and stable structure, cost is relatively low, good reliability, and volumetric efficiency of the constant displacement pump in middle low speed also compares blade
Pump is high, and under identical middle speed operation, the discharge capacity of constant displacement pump can be designed smaller, so as to low speed section in reducing
Torque.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the control system in the non-variable stage of the utility model；
Fig. 2 is the structural schematic diagram of the control system in the variable stage of the utility model；
Appended drawing reference are as follows:
10 --- fixed displacement lubricating oil pump
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 --- pressure feedback chamber interface 30 --- switch electromagnetic valves
40 --- pressure limiting valve
41 --- pressure feedback chamber 42 --- plunger 43 --- transporting rooms
44 --- oil suction chamber interface 45 --- oil outlet chamber interface 46 --- oil discharge outlets.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.In the utility model
Description in, the meaning of " plurality " is two or more, unless otherwise specifically defined.In retouching for the utility model
In stating, it should be noted that unless otherwise specified and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, example
Such as, mechanical connection or electrical connection be can be, the connection being also possible to inside two elements can be directly connected, and can also lead to
It crosses intermediary to be indirectly connected, for the ordinary skill in the art, can understand the term as the case may be
Concrete meaning.
As shown in Figure 1, 2, the preferred embodiment of the utility model is: a kind of pressure control system based on fixed displacement lubricating oil pump
System, it is characterised in that: including fixed displacement lubricating oil pump 10, pilot valve 20, switch electromagnetic valve 30, pressure limiting valve 40, main oil gallery；Fixed displacement
Lubricating oil pump 10 includes oil suction chamber and oil outlet chamber；Pressure limiting valve 40 connects including pressure feedback chamber 41, plunger 42, transporting room 43, oil suction chamber
Mouth 44, oil outlet chamber interface 45, oil discharge outlet 46, valve pocket and return spring；The oil inlet of oil suction chamber interface 44 and fixed displacement lubricating oil pump 10
Chamber communicates, and oil outlet chamber interface 45 is communicated with the oil outlet chamber of fixed displacement lubricating oil pump 10, and oil outlet chamber interface 45 passes through transporting room 43 always
It is communicated with the oil discharge outlet 46, pressure feedback chamber 41 is communicated with main oil gallery, and the oil pressure in pressure feedback chamber 41 can influence plunger
42 position, the difference of 42 position of plunger can then allow be between oil suction chamber interface 44 and oil outlet chamber interface 45 and communicate or disconnect
State；Pilot valve 20 includes valve body 21, spool 22 and spring 23, is equipped with the first control chamber between 21 inner wall of spool 22 and valve body
24, the second control chamber 25, spring cavity 26；Pilot valve 20 is on the oil circuit between main oil gallery and pressure feedback chamber 41, the master
Oil duct is connected respectively to the first control chamber 24 and the second control chamber 25 of pilot valve 20, the first control by two independent oil circuits
Always the pressure oil from main oil gallery is full of in chamber 24, the oil circuit between the second control chamber 25 and main oil gallery is equipped with a switch
Solenoid valve 30 can between first control chamber 24 and the pressure feedback chamber 41 of pressure limiting valve with movement of the spool 22 in valve body 21
In communicating or off-state.
As shown in Figure 1, 2, 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,
The position of corresponding second control chamber 25 is equipped with switch electromagnetic valve interface 28 on valve body 21, and the position of spring cavity 26 is corresponded on valve body 21
Equipped with gas vent 261, pressure feedback chamber interface 29 is additionally provided on valve body 21, with movement of the spool 22 in valve body 21, pressure
It can be at communicating between feedback cavity interface 29 and the first control chamber 24 or off-state；Main oil gallery interface 27 passes through oil circuit and main oil
Road communicates, and pressure feedback chamber interface 29 is communicated by oil circuit with pressure feedback chamber 41；Switch electromagnetic valve 30 is equipped with P mouthfuls, A mouthfuls and T
Mouthful, it is 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；
In the level-one adjustable pressure stage, under control of the ecu, the P mouth of switch electromagnetic valve 30 is connected to A mouthfuls, main oil gallery pressure
Power oil enters the second control chamber 25 of pilot valve 20, in this stage, the first control chamber of pilot valve 20 by switch electromagnetic valve 30
24 and second control chamber 25 be each filled with main oil gallery pressure oil；The level-one pressure release of setting is not reached in the engine oil pressure of main oil gallery
Before pressure spot, it is in close state between the pressure feedback chamber interface 29 and the first control chamber 24, in pressure feedback chamber 41
No oil pressure supply, the pressure oil in 10 oil outlet chamber of fixed displacement lubricating oil pump is all flowed out from the oil discharge outlet 46 of pressure limiting valve 40 at this time；When
When the engine oil pressure of main oil gallery reaches the level-one vent pressure point of setting, pilot valve core 22 is in the first control chamber 24 and the second control
It is mobile to spring cavity 26 under the engine oil pressure effect of chamber 25 processed, make the pressure feedback chamber interface 29 and 24 phase of the first control chamber
Logical, the pressure oil in the first control chamber 29 enters in pressure feedback chamber 41, pushes the plunger 42 of pressure limiting valve 40 to be moved, makes
Oil outlet chamber interface 44 is communicated with oil suction chamber interface 45, and the partial pressure oil in 10 oil outlet chamber of fixed displacement lubricating oil pump successively leads at this time
It crosses oil outlet chamber interface 44, transporting room 43, oil suction chamber interface 45 and flows back into oil suction chamber, another part pressure oil is then from pressure limiting valve 40
Oil discharge outlet 46 flows out, to reduce output pressure；
When switch electromagnetic valve 30 is switched to another working condition under control of the ecu, the P mouth and A of switch electromagnetic valve 30
It mouthful not being connected to, A mouthfuls are connected to T mouthfuls, and system enters the second level adjustable pressure stage, in the second level adjustable pressure stage, pilot valve 20
Full of main oil gallery pressure oil in first control chamber 24, the second control chamber 25 is interior without oil pressure supply；Do not have in the engine oil pressure of main oil gallery
Before having the second level vent pressure point for reaching setting, in pass between the pressure feedback chamber interface 29 and the first control chamber 24
Closed state, pressure feedback chamber 41 is interior to be supplied without oil pressure, and the pressure oil in 10 oil outlet chamber of fixed displacement lubricating oil pump is all from pressure limiting at this time
The oil discharge outlet 46 of valve 40 flows out；When the engine oil pressure of main oil gallery reaches the second level vent pressure point of setting, pilot valve core 22
It is mobile to spring cavity 26 under the engine oil pressure effect of the first control chamber 24, make the pressure feedback chamber interface 29 and the first control
Chamber 24 communicates, and the pressure oil in the first control chamber 24 enters in pressure feedback chamber 41, and the plunger 42 of pressure limiting valve 40 is pushed to carry out
It is mobile, communicate oil outlet chamber interface 44 with oil suction chamber interface 45, at this time the partial pressure oil in 10 oil outlet chamber of fixed displacement lubricating oil pump
It passes sequentially through oil outlet chamber interface 44, transporting room 43, oil suction chamber interface 45 and flows back into oil suction chamber, another part pressure oil is then from limit
The oil discharge outlet 46 of pressure valve 40 flows out, to reduce output pressure.
Control system provided by the utility model passes through the united application of pressure limiting valve 40, pilot valve 20, switch electromagnetic valve 30,
So that fixed displacement lubricating oil pump 10 is also able to achieve two-stage variable discharge capacity, and control simply, in time, which passes through regulation pressure-limiting valve for response
40 aperture, to control the flow of lubricating oil pump output, to achieve the effect that reduce power.The control system of the utility model was both
The advantages of taking full advantage of fixed displacement lubricating oil pump middle and slow speed of revolution volumetric efficiency height, stable structure, at low cost, good reliability, and assign
The ability of predetermined displacement oil pump " second level becomes row ".Since for vane-type variable flow machine oil pump, fixed displacement machine oil
The advantages that pump has part few, and stable structure, cost is relatively low, good reliability, and volumetric efficiency of the constant displacement pump in middle low speed
Also higher than vane pump, under identical middle speed operation, the discharge capacity of constant displacement pump can be designed smaller, in reducing
The torque in low speed section.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model
Hold.
Claims (2)
1. a kind of control pressurer system based on fixed displacement lubricating oil pump, it is characterised in that: including fixed displacement lubricating oil pump (10), guide
Valve (20), switch electromagnetic valve (30), pressure limiting valve (40), main oil gallery；The fixed displacement lubricating oil pump (10) includes oil suction chamber and fuel-displaced
Chamber；The pressure limiting valve (40) includes pressure feedback chamber (41), plunger (42), transporting room (43), oil suction chamber interface (44), oil outlet chamber
Interface (45), oil discharge outlet (46), valve pocket and return spring；The oil inlet of the oil suction chamber interface (44) and fixed displacement lubricating oil pump (10)
Chamber communicates, and the oil outlet chamber interface (45) communicates with the oil outlet chamber of fixed displacement lubricating oil pump (10), and the oil outlet chamber interface (45) is begun
It is communicated eventually by transporting room (43) with the oil discharge outlet (46), the pressure feedback chamber (41) communicates with main oil gallery, the pressure
Oil pressure in feedback cavity (41) can influence the position of the plunger (42), the different institutes that can then allow of plunger (42) position
It states between oil suction chamber interface (44) and oil outlet chamber interface (45) in communicating or off-state；The pilot valve (20) includes valve body
(21), spool (22) and spring (23) are equipped with the first control chamber (24), second between the spool (22) and valve body (21) inner wall
Control chamber (25), spring cavity (26)；The pilot valve (20) is located on the oil circuit between main oil gallery and pressure feedback chamber (41), institute
State the first control chamber (24) and the second control that main oil gallery is connected respectively to the pilot valve (20) by two independent oil circuits
Chamber (25), the first control chamber (24) is interior to be full of the pressure oil from main oil gallery always, between the second control chamber (25) and main oil gallery
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)
It can be at communicating between the pressure feedback chamber (41) of pressure limiting valve or off-state.
2. the control pressurer system according to claim 1 based on fixed displacement lubricating oil pump, it is characterised in that: the pilot valve
(20) position of corresponding first control chamber (24) is equipped with main oil gallery interface (27) on valve body (21), corresponding on the valve body (21)
The position of second control chamber (25) is equipped with switch electromagnetic valve interface (28), and the position of spring cavity (26) is corresponded on the valve body (21)
Equipped with gas vent (261), it is additionally provided with pressure feedback chamber interface (29) on the valve body (21), as spool (22) is in valve body (21)
Interior movement, can be at communicating between the pressure feedback chamber interface (29) and the first control chamber (24) or off-state；It is described
Main oil gallery interface (27) is communicated by oil circuit with main oil gallery, and the pressure feedback chamber interface (29) passes through oil circuit and pressure feedback chamber
(41) it communicates；The switch electromagnetic valve (30) is equipped with P mouthfuls, A mouthfuls and T mouthfuls, wherein communicates with main oil gallery for P mouthfuls, A mouthfuls and pilot valve
(20) the second control chamber (25) communicates, and T mouthfuls communicate with oil sump；
In the level-one adjustable pressure stage, under control of the ecu, the P mouth of switch electromagnetic valve (30) is connected to A mouthfuls, main oil gallery pressure
Oil enters second control chamber (25) of pilot valve (20), in this stage, the first of pilot valve (20) by switch electromagnetic valve (30)
Control chamber (24) and the second control chamber (25) are each filled with main oil gallery pressure oil；Do not reach setting in the engine oil pressure of main oil gallery
It before level-one vent pressure point, is in close state, presses between the pressure feedback chamber interface (29) and the first control chamber (24)
It is supplied in force feedback chamber (41) without oil pressure, the pressure oil in fixed displacement lubricating oil pump (10) oil outlet chamber is all from pressure limiting valve (40) at this time
Oil discharge outlet (46) outflow；When the engine oil pressure of main oil gallery reaches the level-one vent pressure point of setting, pilot valve core (22)
It 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), keep the pressure anti-
Feedback chamber interface (29) is communicated with the first control chamber (24), and the pressure oil in the first control chamber (24) enters pressure feedback chamber (41)
It is interior, it pushes the plunger of pressure limiting valve to be moved, communicates oil outlet chamber interface (45) with oil suction chamber interface (44), at this time fixed displacement machine
Partial pressure oil in oil pump (10) oil outlet chamber passes sequentially through oil outlet chamber interface (45), transporting room (43), oil suction chamber interface (44)
Oil suction chamber is flowed back into, another part pressure oil is then flowed out from the oil discharge outlet (46) of pressure limiting valve (40), to reduce output pressure；
When switch electromagnetic valve (30) is switched to another working condition under control of the ecu, the P mouth and A of switch electromagnetic valve (30)
Mouth is not connected to, and A mouthfuls are connected to T mouthfuls, and system enters the second level adjustable pressure stage, in the second level adjustable pressure stage, pilot valve (20)
The first control chamber (24) in full of main oil gallery pressure oil, supplied without oil pressure in the second control chamber (25)；In the machine oil of main oil gallery
Before pressure does not reach the second level vent pressure point of setting, the pressure feedback chamber interface (29) and the first control chamber (24) it
Between be in close state, supplied without oil pressure in pressure feedback chamber (41), the pressure oil in fixed displacement lubricating oil pump oil outlet chamber is complete at this time
It is flowed out from the oil discharge outlet (46) of pressure limiting valve (40) in portion；When the engine oil pressure of main oil gallery reaches the second level vent pressure point of setting,
Pilot valve core (22) is mobile to spring cavity (26) under the engine oil pressure effect of the first control chamber (24), makes the pressure feedback
Chamber interface (29) is communicated with the first control chamber (24), and the pressure oil in the first control chamber (24) enters pressure feedback chamber (41)
It is interior, it pushes the plunger (42) of pressure limiting valve (40) to be moved, communicates oil outlet chamber interface (45) with oil suction chamber interface (44), at this time
Partial pressure oil in fixed displacement lubricating oil pump (10) oil outlet chamber passes sequentially through oil outlet chamber interface (45), transporting room (43), oil suction chamber
Interface (44) flows back into oil suction chamber, and another part pressure oil is then flowed out from the oil discharge outlet (46) of pressure limiting valve (40), to reduce defeated
Pressure out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821712802.5U CN209163892U (en) | 2018-10-23 | 2018-10-23 | A kind of control pressurer system based on fixed displacement lubricating oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821712802.5U CN209163892U (en) | 2018-10-23 | 2018-10-23 | A kind of control pressurer system based on fixed displacement lubricating oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209163892U true CN209163892U (en) | 2019-07-26 |
Family
ID=67334574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821712802.5U Withdrawn - After Issue CN209163892U (en) | 2018-10-23 | 2018-10-23 | A kind of control pressurer system based on fixed displacement lubricating oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209163892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139176A (en) * | 2018-10-23 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of control pressurer system based on fixed displacement lubricating oil pump |
-
2018
- 2018-10-23 CN CN201821712802.5U patent/CN209163892U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139176A (en) * | 2018-10-23 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of control pressurer system based on fixed displacement lubricating oil pump |
| CN109139176B (en) * | 2018-10-23 | 2024-01-19 | 湖南机油泵股份有限公司 | Pressure control system based on fixed displacement engine oil pump |
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