CN202915019U - Internal variable displacement rotor oil pump - Google Patents
Internal variable displacement rotor oil pump Download PDFInfo
- Publication number
- CN202915019U CN202915019U CN 201220572854 CN201220572854U CN202915019U CN 202915019 U CN202915019 U CN 202915019U CN 201220572854 CN201220572854 CN 201220572854 CN 201220572854 U CN201220572854 U CN 201220572854U CN 202915019 U CN202915019 U CN 202915019U
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- oil
- cavity
- pump
- rotor
- low pressure
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Abstract
The utility model provides an internal variable displacement rotor oil pump. The oil pump is a cycloid rotor pump and comprises a pump body. An inner rotor, an outer rotor, a low pressure oil cavity and a high pressure oil cavity are arranged in the pump body. A first partition and a second partition are formed between the high pressure oil cavity and the low pressure oil cavity. The first partition and the second partition separate the high pressure oil cavity from the low pressure oil cavity. The second partition is a movable sliding block. A first side surface of the movable sliding block is fixedly connected with an elastic element and connected with the low pressure oil cavity. A second side surface of the movable sliding block abuts against the pump body and is connected with the high pressure oil cavity. The high pressure oil cavity is communicated with a main oil duct of an engine. When the pressure in the main oil duct of the engine increases the movable sliding block moves to squeeze the elastic element, so that the volume of the high pressure oil cavity increases, and the volume of the lower pressure oil cavity decreases. The number of oil absorbing volume cavities and the number of oil discharging volume cavities are changed, and therefore oil absorbing volume and oil discharging volume are changed.
Description
Technical field
The utility model relates to a kind of cycloid rotor pump, particularly relates to a kind of inner discharge capacity rotor engine oil pump that becomes, and belongs to the automotive engine lubrication technical field.
Background technique
At present, traditional oil pump that is used for motor car engine generally comprises pump cover and the pump housing, connects with screw between pump cover and the pump housing, is provided with Double-gear, low pressure oil pocket and high-voltage oil cavity in the pump housing; The pump housing is provided with oil sealing, and pump cover is provided with pressure-limit valve.The oil pump that is used for motor car engine that adopts above structure is Shortcomings part still in actual applications: because traditional oil pump can't change discharge capacity, therefore the flow of motor oil pump when running up is higher than the oil pump demand volume far away, cause the pressure ratio of engine lubrication system larger, moment of torsion and idle work also increase thereupon, so just need a pressure-limit valve system, unnecessary machine oil is released through pressure-limit valve, thereby reduce pressure, in this process, unnecessary machine oil causes motor to do a large amount of idle works, cause the motor wasted work larger, cause engine consumption larger, can not satisfy the effect of energy-saving and emission-reduction.
Application number is that 201210064618.5 Chinese patent discloses a kind of variable displacement rotor oil pump, comprise pump cover, pump case, discharge capacity regulation structure and inter panel, the discharge capacity controlling mechanism comprises centrifugal regulating mechanism, the first internal rotor, the first external rotor, the second internal rotor, the second external rotor and rotating shaft, form upper oil cavitie between pump cover and the inter panel, the first internal rotor and the first external rotor match to merge and are positioned at upper oil cavitie, form lower oil cavitie between inter panel and the pump case, the second internal rotor and the second external rotor match to merge and are positioned at lower oil cavitie, lower oil cavitie separately forms lower high pressure oil zone and bends down the force feed zone, centrifugal regulating mechanism, the first internal rotor and the second internal rotor are followed described rotating shaft and are rotated, when the rotating speed of rotating shaft is lower than predefined value, the fluid in lower high pressure oil zone is isolated with the fluid that bends down the force feed zone, when the rotating speed of rotating shaft is higher than predefined value, centrifugal regulating mechanism promotes rotating shaft by centrifugal action and the second internal rotor upwards promotes, and the fluid in lower high pressure oil zone communicates with the fluid that bends down the force feed zone.The variable displacement rotor oil pump of this structure, structure are comparatively complicated, and cost is high.
The model utility content
The shortcoming of prior art in view of the above, the purpose of this utility model are to provide a kind of inner discharge capacity rotor engine oil pump that becomes, and can make oil pump along with the variation of rotating speed and pressure, change discharge capacity by the volume that changes high-voltage oil cavity and low pressure oil pocket.
Reach for achieving the above object other relevant purposes, the utility model provides a kind of inner discharge capacity rotor engine oil pump that becomes, comprise the pump housing, be provided with internal rotor in the described pump housing, external rotor, low pressure oil pocket and high-voltage oil cavity, described internal rotor and external rotor eccentric setting, described internal rotor lacks a tooth than external rotor, form a plurality of airtight cavity volumes between internal rotor and the external rotor, wherein the partial volume chamber is the oil suction cavity volume, described oil suction cavity volume is communicated with the low pressure oil pocket, the partial volume chamber is the oil extraction cavity volume, described oil extraction cavity volume is communicated with high-voltage oil cavity, forming first between described high-voltage oil cavity and the low pressure oil pocket cuts off and the second partition, described the first partition and second cuts off high-voltage oil cavity and low pressure oil pocket is spaced apart, described the second partition is moving slider, the first side of described moving slider is fixedly connected with elastic element, and be connected with the low pressure oil pocket, the second side of described moving slider is resisted against on the pump housing, and be connected with high-voltage oil cavity, described high-voltage oil cavity is communicated with the motor main oil gallery, when motor main oil gallery internal pressure increases, moving slider moves the extruding elastic element, so that the high-voltage oil cavity volume increases, low pressure oil pocket volume reduces.
Preferably, described elastic element is spring, and an end of described spring is fixedly connected with the first side of moving slider, and the other end of described spring is fixedly connected with the slide block blanking cover, and described slide block blanking cover is located on the pump housing.
Preferably, described a plurality of airtight cavity volumes comprise maximum volume chamber and minimum volume chamber, and described maximum volume chamber is on the first position that cuts off all the time, and when internal rotor and external rotor did not rotate, described minimum volume chamber was on the second position that cuts off.
Preferably, also be provided with oil suction chamber in the described pump housing and go out oil pocket, described oil suction chamber and low pressure oil pocket are communicated with, and describedly go out oil pocket and high-voltage oil cavity is communicated with, described motor main oil gallery and go out oil pocket and be communicated with.
Preferably, also be provided with safety valve in the described pump housing, when safety valve was opened, high-voltage oil cavity and low pressure oil pocket were communicated with.
Preferably, described moving slider comprises six sides, and the 3rd side of described moving slider, the 4th side, the 5th side are tightly connected with the pump housing respectively, and the 6th side of described moving slider and internal rotor and external rotor fit.
Preferably, described the first partition is provided with a projection and a recess, and described projection is near the low pressure oil pocket, and described recess is near high-voltage oil cavity.
Preferably, described oil pump also comprises pump cover, and described pump cover and the pump housing are bolted to connection.
As mentioned above, the inner discharge capacity rotor engine oil pump that becomes of the present utility model, between its high-voltage oil cavity and the low pressure oil pocket second partition adopts movably moving slider, control the straight-line displacement of moving slider by the pressure of high-voltage oil cavity increase, change the number of oil suction cavity volume and oil extraction cavity volume, thereby change oil absorption and oil drain quantity, thereby the discharge capacity of control rotor engine oil pump.
Description of drawings
Fig. 1 is shown as the inner structural representation that becomes discharge capacity rotor engine oil pump middle pump body of the utility model.
Fig. 2 be shown as A-A among Fig. 1 to sectional view.
Fig. 3 is shown as the inner assembling schematic diagram that becomes discharge capacity rotor engine oil pump middle pump body and pump cover of the utility model.
Fig. 4 be shown as B-B among Fig. 3 to sectional view.
Fig. 5 be shown as C-C among Fig. 3 to sectional view.
Fig. 6 is shown as the inner structural representation that becomes the first partition place in the discharge capacity rotor engine oil pump of the utility model.
The number in the figure explanation
1 pump housing, 2 internal rotors
3 external rotors, 4 low pressure oil pockets
5 high-voltage oil cavities 6 first cut off
7 moving sliders, 71 first sides
The 3rd side, 72 second sides 73
The 5th side, 74 the 4th sides 75
76 the 6th sides, 8 springs
93 minimum volume chambeies, 91,92 maximum volume chambeies
94,95 oil suction cavity volumes, 96,97 oil extraction cavity volumes
10 slide block blanking covers, 11 oil suction chambers
12 go out oil pocket 13 safety valves
14 pump covers, 15 bolts
16 safety valve springs, 17 safety valve blanking covers
Embodiment
Below by particular specific embodiment mode of execution of the present utility model is described, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.
See also Fig. 1 to Fig. 6.Notice, the appended graphic structure that illustrates of this specification, ratio, size etc., equal contents in order to cooperate specification to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the utility model, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the purpose that can reach, all should still drop on the technology contents that the utility model discloses and get in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the utility model.
As Fig. 1 and shown in Figure 6 shown in, the inner discharge capacity rotor engine oil pump that becomes of the present utility model, comprise the pump housing 1, be provided with internal rotor 2 in the pump housing 1, external rotor 3, low pressure oil pocket 4 and high-voltage oil cavity 5, internal rotor 2 is rotated by drive shaft, internal rotor 2 and external rotor 3 eccentric settings, internal rotor 2 lacks a tooth than external rotor 3, form a plurality of airtight cavity volumes between internal rotor 2 and the external rotor 3, wherein the partial volume chamber is oil suction cavity volume 94, only mark these two among the 95(figure, can have a plurality of), oil suction cavity volume 94,95 are communicated with low pressure oil pocket 4, the partial volume chamber is oil extraction cavity volume 96, only mark these two among the 97(figure, can have a plurality of), oil extraction cavity volume 96,97 are communicated with high-voltage oil cavity 5, form first between high-voltage oil cavity 5 and the low pressure oil pocket 4 and cut off the 6 and second partition, the first partition 6 and second cuts off high-voltage oil cavity 5 and low pressure oil pocket 4 is spaced apart, as shown in Figure 2, the second partition is moving slider 7, the first side 71 of moving slider 7 is fixedly connected with elastic element, and be connected with low pressure oil pocket 4, the second side 72 of moving slider 7 is resisted against on the pump housing 1, and be connected with high-voltage oil cavity 5, high-voltage oil cavity 5 is communicated with the motor main oil gallery, when motor main oil gallery internal pressure increases, moving slider 7 moves the extruding elastic element, so that high-voltage oil cavity 5 volumes increase, low pressure oil pocket 4 volumes reduce.
Wherein, as shown in Figure 2, elastic element is spring 8, and an end of spring 8 is fixedly connected with the first side 71 of moving slider 7, and the other end of spring 8 is fixedly connected with slide block blanking cover 10, and slide block blanking cover 10 is located on the pump housing 1.
As shown in Figure 1, a plurality of airtight cavity volumes comprise maximum volume chamber 91,92 and minimum volume chamber 93, maximum volume chamber 91,92 is in all the time first and cuts off on 6 the position, and when internal rotor 2 and external rotor 3 did not rotate, minimum volume chamber 93 was on the second position that cuts off.
As shown in Figure 1, also be provided with oil suction chamber 11 in the pump housing 1 and go out oil pocket 12, oil suction chamber 11 and low pressure oil pocket 4 are communicated with, and go out oil pocket 12 and high-voltage oil cavity 5 is communicated with, motor main oil gallery and go out oil pocket 12 and be communicated with.
As shown in Figure 5, moving slider 7 comprises six sides, the 3rd side 73 of moving slider 7, the 4th side 74, the 5th side 75 are tightly connected with the pump housing 1 respectively, the 6th side 76 and internal rotor 2 and the external rotor 3 of moving slider fit, playing the partition effect, with internal rotor 2 external tooths and external rotor 3 internal tooths in this partition, high-voltage oil cavity 5 low pressure oil pockets 4 are separated.
As shown in Figure 6, first cuts off 6 is provided with a projection 61 and a recess 62, projection 61 is near low pressure oil pocket 4, and recess 62 is near high-voltage oil cavity 5, and projection 61 plays the oil suction effect that postpones, positive reciprocal of duty cycle is increased, oil suction is more abundant, and recess 62 plays the effect of ahead of time oil extraction, makes fuel-displaced more smooth, pump housing internal rotor 2 and external rotor 3 are produced shorten hermetically sealed zone time, help to reduce pressure surge and reduce moment of torsion.
As shown in Figure 3, oil pump also comprises pump cover 14, and pump cover 14 is fixedly connected with by bolt 15 with the pump housing 1.
Also be provided with safety valve 13, safety valve spring 16, safety valve blanking cover 17 in the pump housing 1, one end of safety valve spring 16 is connected with safety valve 13, the other end of safety valve spring 16 is connected with safety valve blanking cover 17, as shown in Figure 4, pressure in going out oil pocket 12 is excessive to be reached when setting safety value, and the oil pressure that goes out oil pocket 12 backs down safety valve valve 13, goes out oil pocket 12 and is communicated with oil suction chamber 11, thereby high-voltage oil cavity 5 is communicated with low pressure oil pocket 4, realizes pressure release.
Working state one: during motor main oil gallery normal flow rate, the oil pressure of high-voltage oil cavity 5 is less, the first side 71 of moving slider 7 is subjected to the prestressing force of spring, the second side 72 is resisted against on the pump housing 1, this moment, internal rotor 2 and external rotor 3 rotated, and the machine oil in the low pressure oil pocket 4 enters high-voltage oil cavity 5 by the transmission of cavity volume, maximum volume chamber 91,92 was in second and cut off on 7 the position this moment, and minimum volume chamber 93 is in second, and to cut off 7(also be the 6th side 76 of moving slider 7) the position on.
Working state two: when motor main oil gallery flow increases, the oil pressure of high-voltage oil cavity 5 increases, machine oil in the high-voltage oil cavity 5 is by the second side 72 of moving slider 7, traveling priority extrusion spring 8(is as shown in Figure 2 to the right to force moving slider 7), this moment, moving slider 7 left the position at 93 places, minimum volume chamber, because moving slider 7 is subjected to displacement, the volume of high-voltage oil cavity 5 increases, the volume of low pressure oil pocket 4 reduces, the number of the oil suction cavity volume that communicates with low pressure oil pocket 4 reduces, and realizes that discharge capacity reduces, until the oil pressure in the high-voltage oil cavity 5 is less than the restoring force of spring 8, spring 7 effects back into original state with moving slider 8.
The pressure that the utility model increases by high-voltage oil cavity is controlled the straight-line displacement of moving slider, change the number of oil suction cavity volume and oil extraction cavity volume, thereby change oil absorption and oil drain quantity, control the discharge capacity of rotor engine oil pump, so just can be according to the pressure under motor main oil gallery pressure and different rotating speeds, the operating mode, the accurately variation of control pump delivery, reducing motor flogs a dead horse, reduced moment of torsion, and be to reduce hydraulic power on the one hand, be to reduce mechanical output on the other hand, reduced the oil consumption of motor, play the effect of energy-saving and emission-reduction.
The inner working principle that becomes the discharge capacity rotor engine oil pump of the present utility model is: during engine operation, sprocket wheel rotation by bent axle or the connected live axle of sprocket wheel chain-driving, live axle drives internal rotor 2 rotations in the oil pump, internal rotor 2 drives external rotor 3 rotations, under the High Rotation Speed of inner and outer rotors, machine oil in the oil suction chamber 11 enter into high-voltage oil cavity 5 through low pressure oil pocket 4, finally by excessively going out the main oil gallery that oil pocket 12 enters into motor.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Any person skilled in the art scholar all can be under spirit of the present utility model and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under spirit that the utility model discloses and the technological thought, must be contained by claim of the present utility model.
Claims (8)
1. an inside becomes the discharge capacity rotor engine oil pump, comprise the pump housing (1), be provided with internal rotor (2) in the described pump housing (1), external rotor (3), low pressure oil pocket (4) and high-voltage oil cavity (5), described internal rotor (2) and external rotor (3) eccentric setting, described internal rotor (2) lacks a tooth than external rotor (3), form a plurality of airtight cavity volumes between internal rotor (2) and the external rotor (3), wherein the partial volume chamber is oil suction cavity volume (94,95), described oil suction cavity volume (94,95) be communicated with low pressure oil pocket (4), the partial volume chamber is oil extraction cavity volume (96,97), described oil extraction cavity volume (96,97) be communicated with high-voltage oil cavity (5), form first between described high-voltage oil cavity (5) and the low pressure oil pocket (4) and cut off (6) and the second partition, described first cuts off (6) and second cuts off high-voltage oil cavity (5) and low pressure oil pocket (4) is spaced apart, it is characterized in that, described the second partition is moving slider (7), first side (71) of described moving slider (7) is fixedly connected with elastic element, and be connected with low pressure oil pocket (4), second side (72) of described moving slider (7) is resisted against on the pump housing (1), and be connected with high-voltage oil cavity (5), described high-voltage oil cavity (5) is communicated with the motor main oil gallery, when motor main oil gallery internal pressure increases, the mobile extruding of moving slider (7) elastic element is so that high-voltage oil cavity (5) volume increases, low pressure oil pocket (4) volume reduces.
2. inside according to claim 1 becomes the discharge capacity rotor engine oil pump, it is characterized in that, described elastic element is spring (8), one end of described spring (8) is fixedly connected with first side (71) of moving slider (7), the other end of described spring (8) is fixedly connected with slide block blanking cover (10), and described slide block blanking cover (10) is located on the pump housing (1).
3. inside according to claim 1 becomes the discharge capacity rotor engine oil pump, it is characterized in that, described a plurality of airtight cavity volume comprises maximum volume chamber (91,92) and minimum volume chamber (93), described maximum volume chamber (91,92) be in all the time first and cut off on the position of (6), when internal rotor (2) and external rotor (3) when not rotating, described minimum volume chamber (93) is on the position of the second partition.
4. inside according to claim 1 becomes the discharge capacity rotor engine oil pump, it is characterized in that, also be provided with oil suction chamber (11) in the described pump housing (1) and go out oil pocket (12), described oil suction chamber (11) and low pressure oil pocket (4) are communicated with, describedly go out oil pocket (12) and high-voltage oil cavity (5) is communicated with, described motor main oil gallery and go out oil pocket (12) and be communicated with.
5. the inner discharge capacity rotor engine oil pump that becomes according to claim 1 is characterized in that, also is provided with safety valve (13) in the described pump housing (1), when safety valve (13) when opening, and high-voltage oil cavity (5) and low pressure oil pocket (4) connection.
6. inside according to claim 1 becomes the discharge capacity rotor engine oil pump, it is characterized in that, described moving slider (7) comprises six sides, the 3rd side (73) of described moving slider (7), the 4th side (74), the 5th side (75) are tightly connected with the pump housing (1) respectively, and the 6th side (76) of described moving slider (7) fits with internal rotor and external rotor.
7. inside according to claim 1 becomes the discharge capacity rotor engine oil pump, it is characterized in that, described first cuts off (6) is provided with a projection (61) and a recess (62), and described projection (61) is near low pressure oil pocket (4), and described recess (62) is near high-voltage oil cavity (5).
8. the inner discharge capacity rotor engine oil pump that becomes according to claim 1 is characterized in that, described oil pump also comprises pump cover (14), and described pump cover (14) is fixedly connected with by bolt (15) with the pump housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572854 CN202915019U (en) | 2012-11-01 | 2012-11-01 | Internal variable displacement rotor oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572854 CN202915019U (en) | 2012-11-01 | 2012-11-01 | Internal variable displacement rotor oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915019U true CN202915019U (en) | 2013-05-01 |
Family
ID=48163335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220572854 Expired - Fee Related CN202915019U (en) | 2012-11-01 | 2012-11-01 | Internal variable displacement rotor oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927428A (en) * | 2012-11-01 | 2013-02-13 | 上海幸福摩托车有限公司 | Internal variable-displacement rotor oil pump |
-
2012
- 2012-11-01 CN CN 201220572854 patent/CN202915019U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927428A (en) * | 2012-11-01 | 2013-02-13 | 上海幸福摩托车有限公司 | Internal variable-displacement rotor oil pump |
| CN102927428B (en) * | 2012-11-01 | 2015-04-01 | 上海幸福摩托车有限公司 | Internal variable-displacement rotor 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 |
Granted publication date: 20130501 Termination date: 20151101 |
|
| EXPY | Termination of patent right or utility model |