CN203797312U - Vane-type displacement-variable oil pump - Google Patents
Vane-type displacement-variable oil pump Download PDFInfo
- Publication number
- CN203797312U CN203797312U CN201320884478.6U CN201320884478U CN203797312U CN 203797312 U CN203797312 U CN 203797312U CN 201320884478 U CN201320884478 U CN 201320884478U CN 203797312 U CN203797312 U CN 203797312U
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- adjustment ring
- projection
- oil pump
- pump
- vane
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- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 110
- 239000010705 motor oil Substances 0.000 description 13
- 239000010721 machine oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a vane-type displacement-variable oil pump. The vane-type displacement-variable oil pump comprises a pump body and a pump cover, wherein the pump body and the pump cover are mutually matched, the pump body is provided with a work cavity, an adjustment ring is arranged in the work cavity, the adjustment ring is hinged to the pump body, a first protrusion is arranged on the outer circle of the adjustment ring and can slide along the inner wall of the work cavity along with the adjustment ring, and one side surface of the first protrusion in the peripheral direction is connected with an adjustment mechanism. The adjustment mechanism comprises two guide rod bolts, wherein the end of one side of each guide rod bolt is fixedly connected to the inner wall of the work cavity, an interval exists between the end of the other side of each guide rod bolt and the first protrusion, the two guide rod bolts are sleeved with a first adjustment spring and a second adjustment spring, the first adjustment spring and the second adjustment spring are different in length, the end of the first adjustment spring abuts against the first protrusion, and an interval exists between the end of the second adjustment spring and the first protrusion. The adjustment mechanism is arranged on the outer side of the first protrusion, and the purpose of the two-stage displacement-variable oil pump is achieved through a mechanical control method.
Description
Technical field
The utility model relates to car engine lubrication system field, refers to particularly a kind of vane-type variable displacement oil pump.
Background technique
Tradition oil pump is without becoming displacement function, oil pump rate of discharge and engine speed relation in direct ratio.Conventionally in order to meet the pressure requirement of engine idling operation, oil pump discharge capacity designs very greatly, so oil pump rate of discharge is very large when the high rotation speed operation of motor, oil pump working connection pressure can be very high.Tradition oil pump has designed Decompression valves, in the time that oil pump outlet pressure exceedes setting value, releases unnecessary machine oil by Decompression valves, reduces main oil gallery pressure.In this process, the process of releasing unnecessary machine oil has been wasted the power of motor, and engine fuel consumption rate is uprised.
For addressing the above problem, each main engine factory adopt change displacement oil pump one after another.Become at present displacement oil pump and mainly contain one-level displacement-variable oil pump and secondary displacement-variable oil pump.Wherein one-level displacement-variable oil pump adopts the mode that machinery is controlled, and secondary displacement-variable oil pump adopts electromagnetic valve.Secondary displacement-variable oil pump can better meet the actual demand of motor, thus more fuel-efficient, but the complex structure cost of secondary displacement-variable oil pump is high, is generally applied on higher car.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides a kind of mode that can adopt machinery to control to reach the vane-type variable displacement oil pump of secondary variable displacement effect.
The technical solution of the utility model is: a kind of vane-type variable displacement oil pump, it comprises the pump housing and the pump cover that cooperatively interact, and described pump cover is arranged on the pump housing, and the described pump housing is provided with active chamber, transmission shaft is through active chamber, and the two ends of transmission shaft are separately fixed on the pump housing and pump cover, in described active chamber, be provided with adjustment ring, described adjustment ring and the pump housing are hinged, in described adjustment ring, be provided with the rotor being sleeved on transmission shaft, adjustment ring and rotor eccentricity setting, multiple blades on the circumference of described rotor, are evenly arranged, described blade outer end withstands on the inwall of adjustment ring, the inner chamber between adjustment ring and rotor is divided into multiple cavity volumes not of uniform size and that communicate with oil pump working connection by described blade, it is characterized in that: described adjustment ring cylindrical is provided with the first projection, described the first projection can circumferentially be slided along active chamber inwall along with adjustment ring, a circumferential side of described the first projection is connected with controlling mechanism, described controlling mechanism comprises two guide bar bolts, described guide bar bolt one side end is fixedly connected on active chamber inwall, between described guide bar bolt end side and the first projection, there is gap, on two guide bar bolts, be respectively installed with the first Regulation spring and the second Regulation spring, the length of described the first Regulation spring is greater than the length of the second Regulation spring, the end of the first Regulation spring withstands in the first projection, the end of the second Regulation spring and the first projection have space.
Working principle of the present utility model is:
1, engine speed is from zero to becoming while adjusting corresponding engine speed the displacement oil pump first order, the anticlockwise moment that the first Regulation spring applies adjustment ring is greater than the clockwise moment that the pressure oil in feedback pressure oil pocket applies adjustment ring, the position of adjustment ring remains unchanged, and this stage oil pump keeps maximum displacement values;
2, when engine speed adjusts corresponding engine speed to regulate corresponding engine speed to the change displacement oil pump second level from becoming displacement oil pump the first, the anticlockwise moment that the first Regulation spring applies adjustment ring is less than the clockwise moment that the pressure oil in feedback pressure oil pocket applies adjustment ring, adjustment ring starts to be rotated in a clockwise direction variable taking hinged block as fulcrum, but now first adjust compressed second Regulation spring that also do not touch of spring, the rotation variable of adjustment ring causes the throw of eccentric of blade pump rotor and adjustment ring to reduce, oil pump discharge capacity reduces, this stage is oil pump first paragraph variable,
3, when engine speed regulates corresponding engine speed to continue to raise from the variable-displacement pump second level, adjustment ring continues rotation variable under the pressure oil effect of feedback pressure oil pocket, now the first adjustment spring and the second adjustment spring are connected in parallel compressed, the rotation variable of adjustment ring causes the throw of eccentric of blade pump rotor and adjustment ring again to reduce, oil pump discharge capacity also reduces accordingly again, and this stage is oil pump second segment variable;
4, along with oil pump rotating speed improves spring-compressed to limit position, machine oil pump delivery is reduced to minimum value.
In such scheme:
Described adjustment ring cylindrical circumference is gone up in the direction of the clock and is provided with successively the first projection, the second projection, hinged block and the 3rd projection, and the longitudinal end of described the second projection, hinged block and the 3rd projection is all tightly connected with active chamber; Described adjustment ring is by hinged block and be opened in groove on active chamber inwall and match hingedly with the pump housing, and described hinged block, the 3rd projection, adjustment ring and active chamber inwall surround feedback pressure oil pocket, and described feedback pressure oil pocket is communicated with oil pump working connection.
Described adjustment ring cylindrical circumference is provided with the groove matching with hinged block.
Described the 3rd protruding radial outside end offers seal groove, in described seal groove, is provided with sealing block.
On the inwall of the adjustment ring between described the second projection and the 3rd projection, offer guide groove.
Described the second projection, hinged block, adjustment ring and active chamber inwall surround pressure balance chamber, and described pressure balance chamber communicates with adjustment ring inner chamber by being opened in the oil groove radially connecting in described adjustment ring.In the time that engine speed raises, the flow of oil pump working connection increases, and the engine oil pressure in pressure balance chamber increases, and also can apply anticlockwise moment to adjustment ring.
Described the first projection, the second projection, adjustment ring and active chamber inwall surround installation cavity, and described regulation structure is arranged in installation cavity.
The controlling mechanism that the utility model is provided with by the outside of the first projection, and then the method for controlling by machinery has realized the object of two-stage variable displacement oil pump.
Brief description of the drawings
Fig. 1 is the pump body structure schematic diagram in the utility model;
Fig. 2 is the pump cover structure schematic diagram in the utility model;
Fig. 3 is adjustment ring schematic diagram of the present utility model;
Fig. 4 is regulation structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of vane-type variable displacement oil pump as shown in FIG., it comprises the pump housing 100 and the pump cover 200 that cooperatively interact, pump cover 200 is arranged on the pump housing 100, the pump housing 100 offers active chamber 140, transmission shaft 700 is through active chamber 140, and the two ends of transmission shaft 700 are separately fixed on the pump housing 100 and pump cover 200; In active chamber 140, be provided with adjustment ring 300, adjustment ring 300 is hinged with the pump housing 100, in adjustment ring 300, be provided with the rotor 400 being sleeved on transmission shaft 700, adjustment ring 300 and rotor 400 eccentric settings, multiple blades 500 on the circumference of rotor 400, are evenly arranged, blade 500 outer ends withstand on the inwall of adjustment ring 300, and the inner chamber between adjustment ring 300 and rotor 400 is divided into nine cavity volumes not of uniform size and that communicate with oil pump working connection by blade 500.
In the present embodiment, adjustment ring 300 can be under the effect of power, taking its with the articulating point of the pump housing 100 as fulcrum rotation variable, cause the throw of eccentric variation of blade pump rotor 400 and adjustment ring 300, the volume of each cavity volume also can change, thereby realizes the function of oil pump change discharge capacity.
The present embodiment is provided with successively along clockwise direction the first projection 320, the second projection 330, hinged block 310 and the 3rd projection 360 on adjustment ring 300 cylindricals, and wherein the longitudinal end of the second projection 330, hinged block 310 and the 3rd projection 360 is all tightly connected with active chamber 140.
On adjustment ring 300 cylindrical circumference, be provided with the groove 390 matching with hinged block 310, hinged block 310 part sealings are arranged in groove, hinged block 310 another part match in the groove being opened on active chamber 140 inwalls, and adjustment ring 300 is by hinged block 310 and hinged with the pump housing 100.Adjustment ring 300 can be rotated variable taking hinged block 310 as fulcrum.
Hinged block 310, the 3rd projection 360, adjustment ring 300 and active chamber 140 inwalls in the present embodiment surround feedback pressure oil pocket 141, and feedback pressure oil pocket 141 is communicated with oil pump working connection.In the time that engine speed raises, the flow of oil pump working connection increases, and the engine oil pressure of feedback pressure oil pocket 141 increases, and the clockwise moment that adjustment ring 300 is applied increases.
The first projection 320, the second projection 330, adjustment ring 300 and active chamber 140 inwalls surround spring fitting chamber 143, for regulation structure is hereinafter installed; And the second projection 330, hinged block 310, adjustment ring 300 and active chamber 140 inwalls surround pressure balance chamber 142.Pressure balance chamber 142 communicates with adjustment ring 300 inner chambers by oil groove 370, and then communicates with pressure feedback chamber 141.In the time that engine speed raises, the flow of oil pump working connection increases, and the engine oil pressure in pressure balance chamber 142 increases, and also can apply anticlockwise moment to adjustment ring 300.
A circumferential side of the first projection 320 in the present embodiment is towards feedback pressure oil pocket 141, and its circumferential another side is connected with controlling mechanism, and regulation structure applies anticlockwise moment to adjustment ring 300.
Above-mentioned pressure balance chamber 142, feedback pressure oil pocket 141, controlling mechanism apply moment to adjustment ring 300, make adjustment ring 300 be rotated variable taking hinged block 310 as fulcrum.
When engine speed is low, engine oil pressure in oil pump working connection is low, the clockwise moment that engine oil pressure in feedback pressure oil pocket 141 applies adjustment ring 300 is less than the anticlockwise moment that engine oil pressure in pressure balance chamber 142 and controlling mechanism apply adjustment ring 300, and adjustment ring 300 keeps initial position constant.
In the time that engine speed increases, engine oil pressure in oil pump working connection raises, in feedback pressure oil pocket 141, engine oil pressure increases, when clockwise moment adjustment ring 300 being applied when the engine oil pressure of feedback pressure oil pocket 141 is greater than the anticlockwise moment that engine oil pressure in pressure balance chamber 142 and controlling mechanism apply adjustment ring 300, adjustment ring 300 is rotated variable taking hinged block 310 as fulcrum, and then reach oil pump and become the object of discharge capacity, corresponding the first projection 320 can circumferentially be slided along active chamber 140 inwalls along with adjustment ring 300.
Controlling mechanism in the present embodiment is arranged in spring fitting chamber 143, it comprises two guide bar bolts 900, guide bar bolt 900 1 side ends are fixedly connected on active chamber 140 inwalls, between guide bar bolt 900 end side and the first projection 320, there is gap, on two guide bar bolts 900, be respectively installed with the first Regulation spring 810 and the second Regulation spring 800, the length of the first Regulation spring 810 is greater than the length of the second Regulation spring 800, the end of the first Regulation spring 810 withstands in the first projection 320, the end of the second Regulation spring 800 and the first projection 320 have space.
Apply above-mentioned regulation structure, the controlling method that realizes change displacement oil pump is divided into three steps:
When initial, the free end of the first Regulation spring 810 withstands on the side of the first projection 320, and the second Regulation spring 820 is inoperative, 300 of adjustment rings under the effect of the first Regulation spring 810 in oil pump displacement;
When engine speed from 0 when adjusting corresponding engine speed N0 variable-displacement pump, the anticlockwise moment that in the anticlockwise moment that the first Regulation spring 810 applies adjustment ring 300 and pressure balance chamber 142, engine oil pressure applies adjustment ring 300 is greater than the clockwise moment that in feedback pressure oil pocket 141, pressure oil applies adjustment ring 300, and adjustment ring 300 keeps displacement constant; This stage oil pump keeps maximum pump discharge constant, and oil pump capacity is directly proportional to engine speed, and direct ratio ratio is for becoming displacement oil pump maximum displacement values;
When engine speed adjusts corresponding engine speed N0 to regulate corresponding engine speed N1 to the variable-displacement pump second level from variable-displacement pump, the anticlockwise moment that in the anticlockwise moment that the first Regulation spring 810 applies adjustment ring 300 and pressure balance chamber 142, machine oil applies adjustment ring 300 is less than the clockwise moment that in feedback pressure oil pocket 141, pressure oil applies adjustment ring 300, adjustment ring 300 starts the rotation variable taking hinged block 310 as fulcrum, adjustment ring 300 is slided to spring-compressed direction, now the first projection 320 does not also touch the second Regulation spring 800, along with the slip of adjustment ring 300, rotor of engine oil pump 400 reduces with the throw of eccentric of adjustment ring 300, oil pump discharge capacity reduces, oil pump first paragraph becomes discharge capacity and starts,
Engine speed regulates corresponding engine speed N1 to continue to raise during from the variable-displacement pump second level, now the first projection 320 all contacts with the second Regulation spring 800 with the first Regulation spring 810, and the anticlockwise moment that in the anticlockwise moment that the clockwise moment that in feedback pressure oil pocket 141, pressure oil applies adjustment ring 300 applies adjustment ring 300 while being greater than the first Regulation spring 810 and the second Regulation spring 800 parallel connection and pressure balance chamber 142, machine oil applies adjustment ring, adjustment ring 300 continues to slide to spring-compressed direction, along with the slip of adjustment ring 300, rotor of engine oil pump 400 continues to reduce with the throw of eccentric of adjustment ring 300, oil pump discharge capacity reduces, this stage is oil pump second segment variable, from oil pump second segment becomes discharge capacity, along with oil pump rotating speed improves, Regulation spring continues to be compressed to limit position, and now oil pump discharge capacity is reduced to minimum injection rate.
The controlling mechanism that the present embodiment is provided with by the outside of the first projection 320, and then the method for controlling by machinery realizes the object of two-stage variable displacement oil pump.
The present embodiment is machining pump cover filler opening 230 on pump cover 200, pump cover goes out oil pocket 220 and pump cover oil suction chamber 210, the interior machining of the pump housing 100 has oil pump oil suction chamber 110, oil pump goes out oil pocket 120 and oil pump oil outlet 130, the described oil pump working connection of the present embodiment is: flow into from pump cover filler opening 230, pass through successively pump cover oil suction chamber 210, oil pump oil suction chamber 110, pump cover goes out oil pocket 220, oil pump goes out oil pocket 120, finally flow out to motor main oil gallery from oil pump oil outlet 130, and inner chamber between adjustment ring 300 and rotor 400 respectively with oil pump oil suction chamber 110, oil pump goes out oil pocket 120 and communicates, design can go out the oil delivery of oil pump oil suction chamber 110 to oil pump in oil pocket 120 inner chamber between adjustment ring 300 and rotor 400 like this.
In the present embodiment, the 3rd protruding 360 radial outside ends offer seal groove 340, are provided with sealing block 350 in seal groove 340, and sealing block 350 is elastic caoutchouc sealing block, for ensureing the sealing between the 3rd projection 360 and active chamber 140 inwalls.
On the inwall of the adjustment ring 300 between the second projection 330 and the 3rd projection 360, offer guide groove 380, prevent that entrap phenomenon from appearring in oil pump.
Adjustment ring 300 between the second projection 330 and hinged block 310 offers the oil groove 370 of perforation.The pressure balance chamber 142 that oil groove 370 surrounds the second projection 330 and hinged block 310 is connected with adjustment ring 300 inner chambers, to introduce pressure oil balanced adjustment ring 300.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. a vane-type variable displacement oil pump, it comprises the pump housing (100) and the pump cover (200) that cooperatively interact, described pump cover (200) is arranged on the pump housing (100), the described pump housing (100) is provided with active chamber (140), transmission shaft (700) is through active chamber (140), and the two ends of transmission shaft (700) are separately fixed on the pump housing (100) and pump cover (200); in described active chamber (140), be provided with adjustment ring (300), described adjustment ring (300) is hinged with the pump housing (100), in described adjustment ring (300), be provided with the rotor (400) being sleeved on transmission shaft (700), adjustment ring (300) and rotor (400) eccentric setting, multiple blades (500) on the circumference of described rotor (400), are evenly arranged, described blade (500) outer end withstands on the inwall of adjustment ring (300), the inner chamber between adjustment ring (300) and rotor (400) is divided into multiple cavity volumes not of uniform size and that communicate with oil pump working connection by described blade (500), it is characterized in that: described adjustment ring (300) cylindrical is provided with the first projection (320), described the first projection (320) can circumferentially be slided along active chamber (140) inwall along with adjustment ring (300), a circumferential side of described the first projection is connected with controlling mechanism, described controlling mechanism comprises two guide bar bolts (900), described guide bar bolt (900) one side ends are fixedly connected on active chamber (140) inwall, between described guide bar bolt (900) end side and the first projection (320), there is gap, on two guide bar bolts (900), be respectively installed with the first Regulation spring (800) and the second Regulation spring (810), the length of described the first Regulation spring (810) is greater than the length of the second Regulation spring (800), the end of the first Regulation spring (810) withstands in the first projection (320), the end of the second Regulation spring (800) and the first projection (320) have space.
2. vane-type variable displacement oil pump according to claim 1, it is characterized in that: described adjustment ring (300) cylindrical circumference is gone up in the direction of the clock and is provided with successively the first projection (320), the second projection (330), hinged block (310) and the 3rd projection (360), and the longitudinal end of described the second projection (330), hinged block (310) and the 3rd projection (360) is all tightly connected with active chamber (140); Described adjustment ring (300) matches hinged with the pump housing (100) by hinged block (310) and the groove that is opened on active chamber (140) inwall, described hinged block (310), the 3rd projection (360), adjustment ring (300) and active chamber (140) inwall surround feedback pressure oil pocket (141), and described feedback pressure oil pocket (141) is communicated with oil pump working connection.
3. vane-type variable displacement oil pump according to claim 2, is characterized in that: described adjustment ring (300) cylindrical circumference is provided with the groove (390) matching with hinged block (310).
4. vane-type variable displacement oil pump according to claim 2, it is characterized in that: described the 3rd projection (360) radial outside end offers seal groove (340), is provided with sealing block (350) in described seal groove (340).
5. vane-type variable displacement oil pump according to claim 2, is characterized in that: on the inwall of the adjustment ring (300) between described the second projection (330) and the 3rd projection (360), offer guide groove (380).
6. vane-type variable displacement oil pump according to claim 2, it is characterized in that: described the second projection (330), hinged block (310), adjustment ring (300) and active chamber (140) inwall surround pressure balance chamber (142), described pressure balance chamber (142) communicates with adjustment ring (300) inner chamber by being opened in the oil groove (370) radially connecting in described adjustment ring (300).
7. vane-type variable displacement oil pump according to claim 2, it is characterized in that: described the first projection (320), the second projection (330), adjustment ring (300) and active chamber (140) inwall surround installation cavity (143), and described regulation structure is arranged in installation cavity (143).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884478.6U CN203797312U (en) | 2013-12-30 | 2013-12-30 | Vane-type displacement-variable oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884478.6U CN203797312U (en) | 2013-12-30 | 2013-12-30 | Vane-type displacement-variable oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797312U true CN203797312U (en) | 2014-08-27 |
Family
ID=51379522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320884478.6U Expired - Fee Related CN203797312U (en) | 2013-12-30 | 2013-12-30 | Vane-type displacement-variable oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797312U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742775A (en) * | 2013-12-30 | 2014-04-23 | 东风汽车公司 | Vane variable displacement oil pump |
| CN107477344A (en) * | 2016-12-22 | 2017-12-15 | 宝沃汽车（中国）有限公司 | A kind of variable displacement rotor oil pump and with its lubricating system, engine |
| CN113944530A (en) * | 2021-08-30 | 2022-01-18 | 东风汽车集团股份有限公司 | Double-cavity two-stage oil pressure control oil pump |
-
2013
- 2013-12-30 CN CN201320884478.6U patent/CN203797312U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742775A (en) * | 2013-12-30 | 2014-04-23 | 东风汽车公司 | Vane variable displacement oil pump |
| CN107477344A (en) * | 2016-12-22 | 2017-12-15 | 宝沃汽车（中国）有限公司 | A kind of variable displacement rotor oil pump and with its lubricating system, engine |
| CN107477344B (en) * | 2016-12-22 | 2019-06-11 | 北汽福田汽车股份有限公司 | A kind of variable displacement rotor oil pump and the lubricating system with it, engine |
| CN113944530A (en) * | 2021-08-30 | 2022-01-18 | 东风汽车集团股份有限公司 | Double-cavity two-stage oil pressure control oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |