CN109812684A - A kind of rotor-type oil pump directly driven by engine crankshaft - Google Patents
A kind of rotor-type oil pump directly driven by engine crankshaft Download PDFInfo
- Publication number
- CN109812684A CN109812684A CN201910274262.XA CN201910274262A CN109812684A CN 109812684 A CN109812684 A CN 109812684A CN 201910274262 A CN201910274262 A CN 201910274262A CN 109812684 A CN109812684 A CN 109812684A
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- rotor
- pump housing
- pump
- chamber
- engine crankshaft
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- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 39
- 238000010586 diagram Methods 0.000 description 4
- 239000010721 machine oil Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The present invention provides a kind of rotor-type oil pumps directly driven by engine crankshaft, including the pump housing, pump cover, outer rotor, internal rotor；The pump housing includes axis hole, mounting surface and the back side, and the mounting surface of the pump housing is equipped with rotor chamber and oil outlet, and the bottom of rotor chamber is equipped with low pressure chamber and high pressure chest；A valve opening is additionally provided on the pump housing, one end of valve opening is communicated with high pressure chest, and valve opening is sequentially installed with plunger, spring and blocking from inside to outside, and the hole wall of valve opening is equipped with a drain tap, which is located at the mounting surface of the pump housing；The side of the pump housing is equipped with oil inlet, and oil inlet is communicated with low pressure chamber, and oil outlet is communicated with high pressure chest；Outer rotor and internal rotor are mounted in the rotor chamber of the pump housing, and the side wall of rotor chamber is equipped with several grooves；The mounting surface of the pump housing is equipped with pump cover mounting groove, and pump cover is mounted in pump cover mounting groove by screw.This structure can reduce the friction of the outer peripheral surface of outer rotor and the side wall of rotor chamber, to save power consumption.
Description
Technical field
The present invention relates to engine lubrication system, a kind of specifically rotor-type oil pump.
Background technique
Rotor-type oil pump is usually made of the pump housing, internal rotor, outer rotor, armature spindle and pump cover etc..The pump housing, which is equipped with, to be turned
Sub- chamber, internal rotor and outer rotor are located in rotor chamber, and internal rotor is fixedly mounted on armature spindle, direct or indirect by crankshaft toothed wheel
The eccentricity at driving, internal rotor and outer rotor center is e, and internal rotor drives outer rotor to rotate in the same direction together.
The internal rotor of general rotor-type oil pump has 4 or 4 or more double wedges, the recessed gear ratio internal rotor of outer rotor
As soon as convex portion number more, such inner and outer Rotator can be carried out nonsynchronous rotation in the same direction, the outline shape curve of rotor is trochoid
When rotor tooth form tooth Profile Design must make rotor go to any angle, total energy is mutual on the tooth form profile of each tooth of inner and outer Rotator
It coordinates point contact.Multiple working chambers are formed between inner and outer Rotator in this way, with the rotation of rotor, the volume of multiple working chambers is not
Disconnected variation.In the side cavity of oil input channel, since rotor is disengaged, volume is gradually increased, and generates vacuum, and machine oil is inhaled
Enter, rotor continues to rotate, and machine oil is brought to the side of oil road, and at this moment, rotor just enters engagement, subtracts this cavity volume
Small, oil pressure increases, and machine oil is squeezed out between cog and gone out through oil road force feed.In this way, with the continuous rotation of rotor, machine oil is just not
It is inhaled into and extrudes disconnectedly.
Rotor-type oil pump is compact-sized, and outer dimension is small, light-weight, and oil suction vacuum degree is larger, and pump oil amount is big, and fuel feeding is equal
Even property is good, at low cost, is widely used on medium and small engine.The disadvantage is that the resistance to sliding ratio of inner and outer rotors mating surface
Gear pump is big, therefore power consumption is larger.
In the prior art, the structure of outer rotor is generally annular, including inner peripheral surface and outer peripheral surface, wherein sets on inner peripheral surface
There are several concave tooth, outer peripheral surface is circle, and at work, outer rotor rotates together under the drive of internal rotor, outside outer rotor
Circumferential surface will do it with the side wall of rotor chamber and contact friction, for a long time, the two will necessarily be allowed to generate corresponding abrasion.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rotor-type oil pump directly driven by engine crankshaft,
It is compact-sized, and can be reduced the friction of outer rotor, save power consumption.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of directly driven by engine crankshaft
Rotor-type oil pump, including the pump housing, pump cover, outer rotor, internal rotor；The pump housing includes axis hole, mounting surface and the back side, described
The mounting surface of the pump housing is equipped with the rotor chamber and oil outlet of indent, the bottom of the rotor chamber be equipped with not connected low pressure chamber and
High pressure chest；A valve opening is additionally provided on the pump housing, one end of the valve opening is communicated with the high pressure chest, and the valve opening is from introversion
It is sequentially installed with plunger, spring and blocking outside, the hole wall of the valve opening is equipped with a drain tap, which is located at the pump
The mounting surface of body；The side of the pump housing is equipped with oil inlet, and the oil inlet is communicated with low pressure chamber, the oil outlet and high pressure chest
It communicates；The outer rotor and internal rotor are mounted in the rotor chamber of the pump housing, and the side wall of the rotor chamber is equipped with several grooves；
The mounting surface of the pump housing is equipped with pump cover mounting groove, and the pump cover is mounted in pump cover mounting groove by screw.
It is bonded in use, entire lubricating oil pump is carried out installation with engine cylinder body by pump housing mounting surface, engine crankshaft
Sequentially pass through pump cover axis hole, internal rotor axis hole, pump housing axis hole, driving internal rotor rotation.If the side wall due to rotor chamber is equipped with
Dry groove, can thus reduce the friction of the outer peripheral surface of outer rotor and the side wall of rotor chamber, to save power consumption.
Further, the groove on the rotor chamber side wall extends downward into the bottom surface portions of rotor chamber, entire groove
Section is L-shaped.The friction of outer rotor end face Yu rotor chamber bottom surface can be reduced in this way.
Further, the pump cover set on one side there are two oil storage tank towards rotor chamber.Outer rotor end can be reduced in this way
The friction in face and pump cover.
Further, a reinforcing rib is equipped in the middle part of the drain tap of the valve opening.Since the draining mode of drain tap is single
Side draining, then flows back to oil sump, and unilateral draining mode force unbalance, can thus cause plunger deflection, keep plunger inclined
Mill even clamping stagnation can reduce the generation of plunger eccentric wear and catching phenomenon by increasing reinforcing rib.
Further, the axis hole of the pump housing is stepped hole, wherein being used to install oil sealing, axis close to the part at the pump housing back side
An inclined oil hole of air is drilled on the hole wall in hole.The inclined oil hole of air is used to the pressure oil between oil sealing and rotor being drained to oil sump.
Further, mounting-positioning holes there are two being set on the pump housing.
Preferably, the axis hole of the internal rotor is equipped with internal spline, for matching with engine crankshaft spline.
Detailed description of the invention
Fig. 1 is the lubricating oil pump overall structure diagram in the embodiment of the present invention；
Fig. 2 is the structural blast schematic diagram of Fig. 1；
Fig. 3 is the pump body structure schematic diagram in the embodiment of the present invention；
Fig. 4 is the pump cover structure schematic diagram in the embodiment of the present invention；
Fig. 5 is the AA line cross-sectional view of Fig. 1；
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- outer rotor
4 --- internal rotor 5 --- plunger 6 --- springs
7 --- 11 --- axis hole 12 --- oil outlets of blocking
13 --- low pressure chamber 14 --- high pressure chest 15 --- drain taps
16 --- oil inlet 17 --- location hole 18 --- inclined oil hole of air
21 --- oil storage tank.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or two
More than, unless otherwise specifically defined.In the description of the present invention, it should be noted that unless otherwise specified and limited,
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, are also possible to two
Connection inside element, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill of this field
For personnel, the concrete meaning of the term can be understood as the case may be.
As shown in Fig. 1 to 5, the preferred embodiment of the present invention is: a kind of rotator type machine directly driven by engine crankshaft
Oil pump, including the pump housing 1, pump cover 2, outer rotor 3, internal rotor 4；The pump housing 1 includes axis hole 11, mounting surface and the back side, the pump
It being set on body there are two mounting-positioning holes 17, the mounting surface of the pump housing 1 is equipped with the rotor chamber and oil outlet 12 of indent, and described turn
The bottom of sub- chamber is equipped with not connected low pressure chamber 13 and high pressure chest 14；A valve opening, the valve opening are additionally provided on the pump housing 1
One end communicated with the high pressure chest 14, the valve opening be sequentially installed with from inside to outside plunger 5, spring 6 and blocking 7, the valve
The hole wall in hole is equipped with a drain tap 15, which is located at the mounting surface of the pump housing 1, is equipped in the middle part of the drain tap 15
A piece reinforcing rib；The side into the pump housing 1 offers oil inlet 16, and the oil inlet 16 is communicated with low pressure chamber 13, it is described go out
Hydraulic fluid port 12 is communicated with high pressure chest 14；The outer rotor 3 and internal rotor 4 are mounted in the rotor chamber of the pump housing 1, the axis of the internal rotor
Hole is equipped with internal spline, for matching with engine crankshaft spline；The side wall of the rotor chamber is equipped with several grooves (in figure
It is not shown), which extends downward into the bottom surface portions of rotor chamber, keeps the section of entire groove L-shaped；The peace of the pump housing 1
Dress face is equipped with pump cover mounting groove, and the pump cover 2 is mounted in pump cover mounting groove by screw, and the pump cover 2 is towards rotor chamber
Set on one side there are two oil storage tank 21.
As shown in figure 5, the axis hole 11 of the pump housing 1 is stepped hole, wherein being used to install oil close to the part at 1 back side of the pump housing
It seals, an inclined oil hole of air 18 is drilled on the hole wall of axis hole 11, for the pressure oil between oil sealing and rotor to be drained to oil sump.
It is bonded in use, entire lubricating oil pump is carried out installation with engine cylinder body by 1 mounting surface of the pump housing, engine crankshaft
1 axis hole of 2 axis hole of pump cover, 4 axis hole of internal rotor and the pump housing is sequentially passed through, driving internal rotor 4 rotates.Due to being set on the side wall of rotor chamber
There are several grooves, can thus reduce the friction of the outer peripheral surface of outer rotor 3 and the side wall of rotor chamber, to save power consumption.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.
Claims (7)
1. a kind of rotor-type oil pump directly driven by engine crankshaft, including it is the pump housing (1), pump cover (2), outer rotor (3), interior
Rotor (4), it is characterised in that: the pump housing (1) includes axis hole (11), mounting surface and the back side, on the mounting surface of the pump housing (1)
The bottom of rotor chamber and oil outlet (12) equipped with indent, the rotor chamber is equipped with not connected low pressure chamber (13) and high pressure chest
(14)；It is additionally provided with a valve opening on the pump housing (1), one end of the valve opening is communicated with the high pressure chest (14), the valve opening
It is sequentially installed with plunger (5), spring (6) and blocking (7) from inside to outside, the hole wall of the valve opening is equipped with a drain tap
(15), which is located at the mounting surface of the pump housing；The side of the pump housing (1) be equipped with oil inlet (16), it is described into
Hydraulic fluid port (16) is communicated with low pressure chamber (13), and the oil outlet (12) communicates with high pressure chest (14)；The outer rotor (3) and internal rotor
(4) it is mounted in the rotor chamber of the pump housing (1), the side wall of the rotor chamber is equipped with several grooves；The installation of the pump housing (1)
Face is equipped with pump cover mounting groove, and the pump cover (2) is mounted in pump cover mounting groove by screw.
2. the rotor-type oil pump according to claim 1 directly driven by engine crankshaft, it is characterised in that: described turn
Groove on sub- chamber side wall extends downward into the bottom surface portions of rotor chamber, and the section of entire groove is L-shaped.
3. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
State pump cover (2) set on one side there are two oil storage tank (21) towards rotor chamber.
4. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
It states and is equipped with a reinforcing rib in the middle part of the drain tap (15) of valve opening.
5. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
The axis hole for stating the pump housing (1) is stepped hole, wherein being used to install oil sealing close to the part at the pump housing (1) back side, is bored on the hole wall of axis hole
There is an inclined oil hole of air (18).
6. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
It states there are two being set on the pump housing (1) mounting-positioning holes (17).
7. the rotor-type oil pump according to claim 1 or 2 directly driven by engine crankshaft, it is characterised in that: institute
The axis hole for stating internal rotor (4) is equipped with internal spline, for matching with engine crankshaft spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274262.XA CN109812684B (en) | 2019-04-08 | 2019-04-08 | Rotor type oil pump directly driven by engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274262.XA CN109812684B (en) | 2019-04-08 | 2019-04-08 | Rotor type oil pump directly driven by engine crankshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109812684A true CN109812684A (en) | 2019-05-28 |
| CN109812684B CN109812684B (en) | 2024-02-02 |
Family
ID=66611543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910274262.XA Active CN109812684B (en) | 2019-04-08 | 2019-04-08 | Rotor type oil pump directly driven by engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812684B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345370A (en) * | 2019-08-13 | 2019-10-18 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump and engine oil pump cover can be reduced internal rotor eccentric wear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000470A1 (en) * | 2005-07-01 | 2007-01-04 | Harley-Davidson Motor Company Group, Inc. | Oil pump for a motorcycle |
| CN105240674A (en) * | 2015-11-04 | 2016-01-13 | 湖南机油泵股份有限公司 | Novel exterior rotor type oil pump |
| CN107435629A (en) * | 2017-09-09 | 2017-12-05 | 湖南机油泵股份有限公司 | A kind of impeller pump pump case and impeller pump |
| CN108692052A (en) * | 2018-06-19 | 2018-10-23 | 湖南机油泵股份有限公司 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
| CN209705688U (en) * | 2019-04-08 | 2019-11-29 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump directly driven by engine crankshaft |
-
2019
- 2019-04-08 CN CN201910274262.XA patent/CN109812684B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000470A1 (en) * | 2005-07-01 | 2007-01-04 | Harley-Davidson Motor Company Group, Inc. | Oil pump for a motorcycle |
| CN105240674A (en) * | 2015-11-04 | 2016-01-13 | 湖南机油泵股份有限公司 | Novel exterior rotor type oil pump |
| CN107435629A (en) * | 2017-09-09 | 2017-12-05 | 湖南机油泵股份有限公司 | A kind of impeller pump pump case and impeller pump |
| CN108692052A (en) * | 2018-06-19 | 2018-10-23 | 湖南机油泵股份有限公司 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
| CN209705688U (en) * | 2019-04-08 | 2019-11-29 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump directly driven by engine crankshaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345370A (en) * | 2019-08-13 | 2019-10-18 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump and engine oil pump cover can be reduced internal rotor eccentric wear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109812684B (en) | 2024-02-02 |
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