CN205026354U - Volume variable vane pump - Google Patents
Volume variable vane pump Download PDFInfo
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- CN205026354U CN205026354U CN201520701746.5U CN201520701746U CN205026354U CN 205026354 U CN205026354 U CN 205026354U CN 201520701746 U CN201520701746 U CN 201520701746U CN 205026354 U CN205026354 U CN 205026354U
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Abstract
The utility model relates to the field of engine technology, especially, relate to a volume variable vane pump, including pump main part (1), in pump main part (1) the volume of being equipped with reduction of discharging chamber (2) and increase discharge capacity chamber (3), it still includes a two -position four -way valve, case (5) that the two -position four -way valve includes valve body (4) and removes in the valve body, be equipped with between case (5) and valve body (4) and promote chamber (8), case (5) one end is equipped with pre compressed spring (7), still be equipped with four hydraulic fluid ports on the two -position four -way valve, the branch maybe oil inlet (P), unload hydraulic fluid port (T), an actuator port (A) and the 2nd actuator port (B), oil inlet (P) and main oil gallery (6) intercommunication, an actuator port (A) and reduction of discharging volume chamber (2) intercommunication, the 2nd actuator port (B) with increase discharge capacity chamber (3) the intercommunication. This kind of blade pump control system is accurate.
Description
Technical field
The utility model relates to technical field of engines, particularly relates to a kind of variable displacement vane pump.
Background technique
Operationally, each moving parts is all used on another part with certain masterpiece motor car engine, and relative movement at a high speed occurs, and had relative movement, part surface must produce friction, thus accelerated wear test.Therefore in order to alleviate wearing and tearing, reducing friction resistance, increases the service life, and motor all must have lubrication system.The various equipment such as the organic oil pump of critical piece of lubrication system, the effect of oil pump is after machine oil is brought up to certain pressure, the compulsory moving surface being sent to each component of motor.
A kind of variable displacement vane pump of prior art, the patent No. as the applicant's application is the Chinese patent application of 201510043169.X, its pump main body is provided with a solenoid valve, and solenoid valve is only provided with filler opening, unloading port, first actuator port, first actuator port is communicated with emission reduction chamber, filler opening is communicated with main oil gallery, namely the pressure in emission reduction chamber can only be controlled, but in actual applications, because pump main body internal pressure will change because of the reason such as air content and cavitation during high engine speeds running, pressure imbalance will be caused like this, and then cause discharge capacity too small.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of and control accurate variable displacement vane pump.
The technological scheme that the utility model adopts is: a kind of variable displacement vane pump, comprise pump main body, be provided with emission reduction chamber in described pump main body and increase displacement chamber, it also comprises a two-position four-way valve, described two-position four-way valve comprises valve body and the spool of movement in valve body, described spool be provided with the push chamber be communicated with pump main body main oil gallery for promoting spool movement between valve body, described spool one end is provided with the loaded spring for providing precompression to spool, described two-position four-way valve is also provided with four hydraulic fluid ports, filler opening respectively, unloading port, first actuator port and the second actuator port, described filler opening is communicated with the main oil gallery of pump main body, described first actuator port is communicated with emission reduction chamber, described second actuator port is communicated with increasing displacement chamber, when main oil gallery hydraulic fluid pressure is less, filler opening is communicated with the second actuator port, unloading port is communicated with the first actuator port, when main oil gallery hydraulic fluid pressure is larger, filler opening is communicated with the first actuator port, and unloading port is communicated with the second actuator port.
Adopt above structure compared with prior art, the utility model has the following advantages: control pump delivery by a two-position four-way valve, when the engine speed is lower, now the pressure of main oil gallery hydraulic oil is less, be communicated with main oil gallery so increase displacement chamber, make oil pump be in full displacement condition, when engine speed is moderate rotation, now the pressure of main oil gallery hydraulic oil is comparatively large, so emission reduction chamber is communicated with main oil gallery, increases displacement chamber draining, pump delivery is reduced, when engine speed is high rotating speed, because the reason such as air content and cavitation produces inner uneven oil pressure the trend making oil pump reduce discharging, if now there is oil pressure in emission reduction chamber, oil pump is still in controlled range, if emission reduction chamber does not have oil pressure, inner uneven oil pressure and spring force is only had to balance, along with the uneven oil pressure aggravation in inside, oil pressure continuous decrease, oil pump just will be in runaway condition, this patent can prevent the generation of this phenomenon, when rotating speed rising oil pressure is reduced to a certain setting value, the filler opening of two position four-way valves can be communicated with the second actuator port, namely filler opening is communicated with increasing displacement chamber, increase displacement chamber oil pressure to increase, oil pump capacity is increased, oil pressure maintains desirable value.The control of variable displacement vane pump is all more accurate under three circumstances.
As preferably, the other end of described spool is provided with the proportion electro-magnet assembly for promoting spool movement.Adoption rate electromagnet assembly provides a basic thrust to spool, thus changes the adjustment pressure overcome needed for spring force, so just can realize the continuous control of balance pressure within the specific limits.
As preferably, the area of the lower end surface of described push chamber is greater than the area of push chamber upper-end surface.Such setting, when oil inlet P mouth has hydraulic coupling, because push chamber lower end area is comparatively large, so the pressure that push chamber lower end is subject to is comparatively large, namely hydraulic coupling can promote spool and down moves.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model variable displacement vane pump.
Fig. 2 is the schematic diagram of the two-position four-way valve of the utility model variable displacement vane pump.
Fig. 3 be the two-position four-way valve of the utility model variable displacement vane pump structural representation.
As shown in the figure: 1, pump main body; 2, emission reduction chamber; 3, displacement chamber is increased; 4, valve body; 5, spool; 6, main oil gallery; 7, loaded spring; 8, push chamber; 9, proportion electro-magnet assembly; P, filler opening; T, unloading port; A, the first actuator port; B, the second actuator port.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further, but the utility model is not limited only to following embodiment.
A kind of variable displacement vane pump, comprise pump main body 1, be provided with emission reduction chamber 2 in described pump main body 1 and increase displacement chamber 3, it also comprises a two-position four-way valve, described two-position four-way valve comprises the spool 5 of valve body 4 and movement in valve body, described spool 5 be provided with the push chamber 8 be communicated with pump main body main oil gallery 6 for promoting spool 5 movement between valve body 4, described spool 5 one end is provided with the loaded spring 7 for providing precompression to spool 5, described two-position four-way valve is also provided with four hydraulic fluid ports, oil inlet P respectively, unloading port T, first actuator port A and the second actuator port B, described oil inlet P is communicated with the main oil gallery 6 of pump main body 1, described first actuator port A is communicated with emission reduction chamber 2, described second actuator port B is communicated with increasing displacement chamber 3, when main oil gallery hydraulic fluid pressure is less, filler opening is communicated with the second actuator port, unloading port is communicated with the first actuator port, when main oil gallery hydraulic fluid pressure is larger, filler opening is communicated with the first actuator port, and unloading port is communicated with the second actuator port.
The other end of described spool 5 is provided with the proportion electro-magnet assembly 9 for promoting spool movement.
The area of the lower end surface of described push chamber 8 is greater than the area of push chamber 8 upper-end surface.Because gap is smaller, so this gap be can't see in figure 3, described upper-end surface is the annular inner wall on the top of the push chamber 8 shown in Fig. 3, and described lower end surface is the annular inner wall of push chamber 8 bottom shown in Fig. 3.The hydraulic oil entered from oil inlet P mainly enters promote that spool 5 moves down because the difference in areas of the upper and lower both ends of the surface of push chamber produces Driving force.
As shown in Figure 3, the working principle of the application is: when the engine speed is lower, and now the pressure of main oil gallery 6 hydraulic oil is less, so oil inlet P is communicated with the second actuator port B, namely increase displacement chamber 3 to be communicated with main oil gallery 6, make oil pump be in full displacement condition, when engine speed is moderate rotation, now the pressure of main oil gallery 6 hydraulic oil is larger, now the hydraulic oil of main oil gallery 6 can enter in push chamber 8 by oil inlet P mouth, because hydraulic fluid pressure becomes large, the hydraulic oil in push chamber 8 moves downward so can promote spool 5, and then oil inlet P and the second actuator port B are isolated, second actuator port B is communicated with unloading port T, oil inlet P is communicated with the first actuator port A simultaneously, namely emission reduction chamber 2 is communicated with main oil gallery 6, increase displacement chamber 3 draining, pump delivery is reduced, when engine speed is high rotating speed, because the reason such as air content and cavitation produces inner uneven oil pressure the trend making oil pump reduce discharging, if now there is oil pressure in emission reduction chamber 2, oil pump is still in controlled range, if emission reduction chamber 2 does not have oil pressure, inner uneven oil pressure and spring force is only had to balance, along with the uneven oil pressure aggravation in inside, oil pressure continuous decrease, oil pump just will be in runaway condition, this patent can prevent the generation of this phenomenon, when rotating speed rising oil pressure is reduced to a certain setting value, because the hydraulic coupling in the push chamber 8 that main oil gallery 6 connects reduces, so spool 5 back can be promoted by loaded spring 7, oil inlet P can be communicated with the second actuator port B, namely main oil gallery 6 is communicated with increasing displacement chamber 3, increase displacement chamber 3 oil pressure to increase, oil pump capacity is increased, oil pressure maintains desirable value.The control of variable displacement vane pump is all more accurate under three circumstances.
Claims (3)
1. a variable displacement vane pump, comprise pump main body (1), be provided with emission reduction chamber (2) in described pump main body (1) and increase displacement chamber (3), it is characterized in that: it also comprises a two-position four-way valve, described two-position four-way valve comprises the spool (5) of valve body (4) and movement in valve body, the push chamber (8) be communicated with pump main body main oil gallery (6) for promoting spool (5) movement is provided with between described spool (5) with valve body (4), described spool (5) one end is provided with the loaded spring (7) for providing precompression to spool (5), described two-position four-way valve is also provided with four hydraulic fluid ports, filler opening (P) respectively, unloading port (T), first actuator port (A) and the second actuator port (B), described filler opening (P) is communicated with the main oil gallery (6) of pump main body (1), described first actuator port (A) is communicated with emission reduction chamber (2), described second actuator port (B) is communicated with increasing displacement chamber (3), when main oil gallery hydraulic fluid pressure is less, filler opening is communicated with the second actuator port, unloading port is communicated with the first actuator port, when main oil gallery hydraulic fluid pressure is larger, filler opening is communicated with the first actuator port, and unloading port is communicated with the second actuator port.
2. variable displacement vane pump according to claim 1, is characterized in that: the other end of described spool (5) is provided with the proportion electro-magnet assembly (9) for promoting spool movement.
3. variable displacement vane pump according to claim 1, is characterized in that: the area of the lower end surface of described push chamber (8) is greater than the area of push chamber (8) upper-end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701746.5U CN205026354U (en) | 2015-09-11 | 2015-09-11 | Volume variable vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701746.5U CN205026354U (en) | 2015-09-11 | 2015-09-11 | Volume variable vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205026354U true CN205026354U (en) | 2016-02-10 |
Family
ID=55258884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520701746.5U Active CN205026354U (en) | 2015-09-11 | 2015-09-11 | Volume variable vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205026354U (en) |
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2015
- 2015-09-11 CN CN201520701746.5U patent/CN205026354U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |