CN204532460U - Oil pump and motor - Google Patents
Oil pump and motor Download PDFInfo
- Publication number
- CN204532460U CN204532460U CN201520152835.9U CN201520152835U CN204532460U CN 204532460 U CN204532460 U CN 204532460U CN 201520152835 U CN201520152835 U CN 201520152835U CN 204532460 U CN204532460 U CN 204532460U
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- Prior art keywords
- pressure
- oil
- oil pump
- limit valve
- body main
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Abstract
The utility model discloses a kind of oil pump and motor, described oil pump comprises housing (13) and is positioned at the oil sucting cavity (2) of this housing (13) and the pumping cavity (3) for being communicated with body main oil gallery, wherein, described oil pump is also provided with pressure-limit valve (1), this pressure-limit valve (1) action according to the oil pressure of described body main oil gallery, described pumping cavity (3) pressure release is made to connect at the described pressure-limit valve (1) when the oil pressure of described body main oil gallery exceedes predetermined value, described pressure-limit valve (1) cut-off when the oil pressure of described body main oil gallery is no more than described predetermined value.Therefore the open and close controlling of the pressure-limit valve (1) of oil pump of the present utility model relatively accurately in response to the oil pressure of body main oil gallery, can improve the control to oil pressure in body main oil gallery, and component are extended working life.
Description
Technical field
The utility model relates to engine fittings, particularly, relates to a kind of oil pump.In addition, the utility model also relates to a kind of motor comprising described oil pump.
Background technique
During engine running, many part surfaces with relative movement are all under very little gap, do high speed relative movement, as piston and cylinder wall, crankshaft main journal and main bearing, crank pin and connecting rod bearing, each kinematic pair of distribution device etc.The part surface of relative movement will inevitably produce friction, causes part time job surface abrasion, effective engine power to decline, and even causes motor to operate.Therefore, in order to ensure engine work, improving working life, must lubricate the part surface of relative movement.
For the operating conditions that each kinematic pair is different, multiple different lubricating system can be selected: pressure lubrication, splash lubrication and grease lubrication etc.Wherein, pressure lubrication is the lubricating system with certain pressure, lubricant oil being constantly delivered to friction surface under the effect of oil pump, is generally used for crankshaft main bearing, connecting rod bearing and camshaft bearing etc. and bears on the friction surface of larger load.As one of the critical component of lubrication system, oil pump is used for providing sufficiently high pressure, to ensure to carry out pressure lubrication and lubricant oil can circulate in lubrication system.
Oil pump directly or indirectly can be driven by crankshaft gear (namely driving its driving shaft to rotate), and along with the rising of driving shaft rotating speed, existing pressure also can increase thereupon.But, when engine oil pressure is too high, then require that corresponding component have higher intensity.For this reason, oil pump is provided with pressure-limit valve usually, to avoid lubrication system overpressure.
Pressure-limit valve in traditional oil pump is ball valve and is locked by spring, and when the pumping cavity pressure of oil pump exceedes certain value, ball valve overcomes spring force and opens, to make pumping cavity pressure release.The deficiency of this conventional art is, machine oil due to the pumping cavity pumping of oil pump needs to enter body main oil gallery after machine oil refrigerating module, oil filter, cause the oil pressure in body main oil gallery less relative to the oil pressure of oil pump pumping cavity, thus making can not the actual pressure born of accurate corresponding body main oil gallery according to the control mode of pumping cavity Stress control pressure-limit valve opening and closing, cannot control the working environment of each part well.
In view of this, be necessary to provide a kind of novel oil pump, to solve above-mentioned prior art problem Problems existing.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of oil pump, and this oil pump can improve the control to oil pressure in body main oil gallery, thus elongated component working life.
To achieve these goals, the utility model provides a kind of oil pump, this oil pump comprises housing and is positioned at the oil sucting cavity of this housing and the pumping cavity for being communicated with body main oil gallery, wherein, described oil pump is also provided with pressure-limit valve, the action according to the oil pressure of described body main oil gallery of this pressure-limit valve, described pumping cavity pressure release is made, the described pressure-limit valve cut-off when the oil pressure of described body main oil gallery is no more than described predetermined value to connect at pressure-limit valve described when the oil pressure of described body main oil gallery exceedes predetermined value.
Preferably, described body main oil gallery is provided with oil pressure sensor, described pressure-limit valve is the electrically-controlled valve that is electrically connected with this oil pressure sensor and connects according to the fuel injection pressure signal that described oil pressure sensor detects or end.
Preferably, described pressure-limit valve is hydraulic control valve.
Preferably, described body main oil gallery is communicated with the liquid controling cavity of described pressure-limit valve, and described pressure-limit valve has the spring chamber accommodating spring, under the bias effect of described spring, and described pressure-limit valve cut-off; When described body main oil gallery oil pressure exceedes described predetermined value, described pressure-limit valve is connected by the biasing force of spring described in the oil pressure counter in described liquid controling cavity, to make described pumping cavity pressure release.
Preferably, described housing is formed with the filler opening for being communicated with described body main oil gallery, this filler opening is by being communicated in the described liquid controling cavity of described pressure-limit valve through the passage of described housing.
Preferably, described oil pump is integrated with the safety valve for carrying out overload protection to this oil pump.
Preferably, described pressure-limit valve is by being communicated with described oil sucting cavity and making described pumping cavity off-load controlling described pumping cavity when described body main oil gallery oil pressure exceedes described predetermined value.
Preferably, described pressure-limit valve is integrated in described housing.
Preferably, described oil pump is rotor pump, and this rotor pump comprises and being contained in described housing and the internal rotor of nested installation and external rotor, there is throw of eccentric between this internal rotor and external rotor, described internal rotor is driven by driving shaft, asynchronously rotates in the same way to make described internal rotor and described external rotor.
In addition, the utility model also provides a kind of motor, comprises lubrication system, and this lubrication system comprises the described oil pump that the utility model provides and the body main oil gallery be communicated with the pumping cavity of this oil pump.
By technique scheme of the present utility model, pressure-limit valve action according to the oil pressure in body main oil gallery, thus make pumping cavity pressure release connecting when the oil pressure of body main oil gallery exceedes predetermined value, to make oil pump working pressure keep stable, avoid body main oil gallery oil pressure too high and damage that is that cause component.Compared to conventional art, because therefore the open and close controlling of the pressure-limit valve of oil pump of the present utility model relatively accurately in response to the oil pressure of body main oil gallery, can improve the control to oil pressure in body main oil gallery, component are extended working life.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the oil pump according to a kind of preferred implementation of the utility model;
Fig. 2 is the structural representation of oil pump from Fig. 1 of opposite side view.
Description of reference numerals
1 pressure-limit valve 2 oil sucting cavity
3 pumping cavity 4 filler openings
5 liquid controling cavity 6 springs
7 valve rod 8 inlet ports
9 force feed mouth 10 internal rotors
11 external rotor 12 driving shafts
13 housing 14 safety valves
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In the utility model, when not doing contrary explanation, the noun of locality such as " upper and lower, left and right " of use typically refers to reference to upper and lower, left and right shown in the drawings; " inside and outside " refers to profile inside and outside relative to each parts itself.
Shown in seeing figures.1.and.2, according to the oil pump of a kind of embodiment of the utility model, comprise housing 13 and be positioned at oil sucting cavity 2 and the pumping cavity 3 of this housing 13.When this oil pump is installed on motor, pumping cavity 3 is communicated with the body main oil gallery of motor, and forms the lubrication system of motor together with other parts.
Should be understood that, for dissimilar oil pump, above-mentioned oil sucting cavity 2 is different with the formation form of pumping cavity 3.But it has common feature, for external gear pump, each inter-tooth slots of housing, end cap and gear constitutes multiple pressurization working lumen.In gear rotary course, the active chamber be communicated with inlet port is as oil sucting cavity, and its seal operation volume increases gradually, forming section vacuum, so that machine oil is sucked oil sucting cavity; Along with gear rotates, machine oil is taken to the pumping cavity be communicated with force feed mouth, and its seal operation volume constantly reduces, thus oil delivery is wherein gone out.
In the utility model preferred implementation shown in Fig. 1 and Fig. 2, oil pump is rotor pump.This rotor pump comprises and being contained in housing 13 and the internal rotor 10 of nested installation and external rotor 11, and internal rotor 10 can be fixed on driving shaft 12 with key or pin, and is directly or indirectly driven by crankshaft gear by this driving shaft 12; External rotor 11 pine is enclosed within housing 13, there is throw of eccentric between internal rotor 10 and external rotor 11.The double wedge of internal rotor 10 and the recessed tooth contact of external rotor 11 also interact, thus under driving force effect, the two asynchronously rotates in the same way.In rotary course, the working chamber volume between internal rotor 10 and external rotor 11 constantly changes, to carry out the operation of pump oil.Comparatively speaking, rotor-type oil pump compact structure, quality are light, be suitable in, low-powered engine is applied.Particularly with other preferred feature of the present utility model in conjunction with time, this advantage will be more remarkable.
Especially, oil pump of the present utility model is also provided with pressure-limit valve 1, the action according to the oil pressure of described body main oil gallery of this pressure-limit valve 1, and with when exceeding predetermined value when the oil pressure of body main oil gallery, pressure-limit valve 1 is connected and makes pumping cavity 3 pressure release; When the oil pressure of body main oil gallery is no more than described predetermined value, pressure-limit valve 1 ends.Described predetermined value can be determined according to design requirement, and such as, structural strength in conjunction with lubricated body component is determined, when working under the oil pressure in predetermined value, component have good working order.
The pressure release of pumping cavity 3 described in the utility model, refer to when (because the oil pressure of body main oil gallery is too high) pressure-limit valve 1 is connected, pumping cavity 3 is communicated with area of low pressure and machine oil is wherein discharged, and such as, pumping cavity 3 can be communicated with oil sump, inlet port 8 or oil sucting cavity 2 etc.This will be described below in conjunction with preferred implementation of the present utility model.
In the utility model, pressure-limit valve 1 action according to the oil pressure in body main oil gallery, thus make pumping cavity pressure release connecting when the oil pressure of body main oil gallery exceedes predetermined value, to make the working pressure of oil pump keep stable, avoid body main oil gallery oil pressure too high and damage that is that cause component.Compared to conventional art, because therefore the open and close controlling of the pressure-limit valve 1 of oil pump of the present utility model relatively accurately in response to the oil pressure of body main oil gallery, can improve the control to oil pressure in body main oil gallery, component are extended working life.
For dissimilar pressure-limit valve 1, different control modes can be applied, as automatically controlled or hydraulic control.
When pressure-limit valve 1 is electrically-controlled valve, oil pressure sensor can be set on body main oil gallery, the fuel injection pressure signal that pressure-limit valve detects according to this oil pressure sensor and connect or end.This mode of execution needs to arrange corresponding control mechanism, therefore structure relative complex.
When pressure-limit valve 1 is hydraulic control valve, the machine oil of body main oil gallery can be caused pressure-limit valve 1 and realize open and close controlling to this pressure-limit valve 1.Particularly, as shown in Figure 2, described body main oil gallery is communicated with the liquid controling cavity 5 of pressure-limit valve 1, and described pressure-limit valve 1 has the spring chamber accommodating spring 6, and under the bias effect of described spring 6, described pressure-limit valve 1 ends; When body main oil gallery oil pressure exceedes described predetermined value, described pressure-limit valve 1 is connected by the biasing force of spring 6 described in the oil pressure counter in described liquid controling cavity 5, to make the pressure release of described pumping cavity 3.
Further, described housing 13 can be formed with the filler opening 4 for being communicated with body main oil gallery, this filler opening 4 is by being communicated in the liquid controling cavity 5 of pressure-limit valve 1 through the passage of described housing 13.
Just as shown above, pressure-limit valve 1 can make pumping cavity 3 pressure release in several ways.In oil pump according to a kind of preferred implementation of the utility model, pressure-limit valve 1 is by being communicated with described oil sucting cavity 2 and making pumping cavity 3 off-load controlling described pumping cavity 3 when described body main oil gallery oil pressure exceedes described predetermined value.By this mode of execution, the direct earial drainage of the machine oil in pumping cavity 3, to oil sucting cavity 2, can reduce energy dissipation.
In order to the pressure release realizing pumping cavity 3 by the way controls, pressure-limit valve 1 can be integrated in housing 13.Further, with reference to shown in Fig. 2, can have valve rod 7 in pressure-limit valve 1, this valve rod 7 can cut off oil sucting cavity 2 and pumping cavity 3 under the bias effect of spring 6.Until when the oil pressure of body main oil gallery exceedes predetermined value, this oil pressure acts on liquid controling cavity 5, thus make valve rod 7 overcome the pressure of spring 6 and move to spring chamber side, pumping cavity 3 is communicated with oil sucting cavity 2, engine oil in pumping cavity 3 flow in oil sucting cavity 2, avoids the oil pressure of body main oil gallery to continue to raise.By this preferred implementation, oil pump of the present utility model is compacter, and structure is simpler.
For the ease of avoiding oil pump to damage when body main oil gallery even load breaks down, the safety valve 14 for carrying out overload protection to this oil pump can be integrated with in oil pump.
The utility model also provides a kind of motor, comprises lubrication system, and this lubrication system comprises the described oil pump that the utility model provides and the body main oil gallery be communicated with the pumping cavity 3 of this oil pump.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. oil pump, this oil pump comprises housing (13) and is positioned at the oil sucting cavity (2) of this housing (13) and the pumping cavity (3) for being communicated with body main oil gallery, it is characterized in that, described oil pump is also provided with pressure-limit valve (1), this pressure-limit valve (1) action according to the oil pressure of described body main oil gallery, described pumping cavity (3) pressure release is made to connect at the described pressure-limit valve (1) when the oil pressure of described body main oil gallery exceedes predetermined value, described pressure-limit valve (1) cut-off when the oil pressure of described body main oil gallery is no more than described predetermined value.
2. oil pump according to claim 1, it is characterized in that, described body main oil gallery is provided with oil pressure sensor, the fuel injection pressure signal that described pressure-limit valve (1) detects for the electrically-controlled valve that is electrically connected with this oil pressure sensor and according to described oil pressure sensor and connect or end.
3. oil pump according to claim 1, is characterized in that, described pressure-limit valve (1) is hydraulic control valve.
4. oil pump according to claim 3, it is characterized in that, described body main oil gallery is communicated with the liquid controling cavity (5) of described pressure-limit valve (1), described pressure-limit valve (1) has the spring chamber accommodating spring (6), under the bias effect of described spring (6), described pressure-limit valve (1) cut-off; When described body main oil gallery oil pressure exceedes described predetermined value, described pressure-limit valve (1) is connected by the biasing force of spring (6) described in the oil pressure counter in described liquid controling cavity (5), to make described pumping cavity (3) pressure release.
5. oil pump according to claim 4, it is characterized in that, described housing (13) is formed with the filler opening (4) for being communicated with described body main oil gallery, this filler opening (4) is by being communicated in the described liquid controling cavity (5) of described pressure-limit valve (1) through the passage of described housing (13).
6. oil pump according to claim 1, is characterized in that, described oil pump is integrated with the safety valve (14) for carrying out overload protection to this oil pump.
7. oil pump as claimed in any of claims 1 to 6, it is characterized in that, described pressure-limit valve (1) is by being communicated with described oil sucting cavity (2) and making described pumping cavity (3) off-load controlling described pumping cavity (3) when described body main oil gallery oil pressure exceedes described predetermined value.
8. oil pump according to claim 7, is characterized in that, described pressure-limit valve (1) is integrated in described housing (13).
9. oil pump as claimed in any of claims 1 to 6, it is characterized in that, described oil pump is rotor pump, this rotor pump comprises and being contained in described housing (13) and the internal rotor (10) of nested installation and external rotor (11), throw of eccentric is there is between this internal rotor (10) and external rotor (11), described internal rotor (10) is driven by driving shaft (12), asynchronously rotates in the same way to make described internal rotor (10) and described external rotor (11).
10. motor, this motor comprises lubrication system, the body main oil gallery that this lubrication system comprises oil pump and is communicated with the pumping cavity (3) of this oil pump, it is characterized in that, described oil pump is oil pump as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152835.9U CN204532460U (en) | 2015-03-18 | 2015-03-18 | Oil pump and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152835.9U CN204532460U (en) | 2015-03-18 | 2015-03-18 | Oil pump and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532460U true CN204532460U (en) | 2015-08-05 |
Family
ID=53746478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520152835.9U Expired - Fee Related CN204532460U (en) | 2015-03-18 | 2015-03-18 | Oil pump and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204532460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357144A (en) * | 2018-12-18 | 2019-02-19 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
-
2015
- 2015-03-18 CN CN201520152835.9U patent/CN204532460U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357144A (en) * | 2018-12-18 | 2019-02-19 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
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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 |
Granted publication date: 20150805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |