CN103363277B - A kind of oil pump, engine front cover lid and motor - Google Patents

A kind of oil pump, engine front cover lid and motor Download PDF

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Publication number
CN103363277B
CN103363277B CN201210087044.3A CN201210087044A CN103363277B CN 103363277 B CN103363277 B CN 103363277B CN 201210087044 A CN201210087044 A CN 201210087044A CN 103363277 B CN103363277 B CN 103363277B
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CN
China
Prior art keywords
oil
partitioning
cavity
oil pump
low pressure
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CN201210087044.3A
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Chinese (zh)
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CN103363277A (en
Inventor
刘静
郑俊丽
李海彬
林晋琛
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比亚迪股份有限公司
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Priority to CN201210087044.3A priority Critical patent/CN103363277B/en
Priority claimed from US14/380,052 external-priority patent/US9869313B2/en
Publication of CN103363277A publication Critical patent/CN103363277A/en
Application granted granted Critical
Publication of CN103363277B publication Critical patent/CN103363277B/en

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Abstract

The invention discloses a kind of oil pump, comprise housing, rotor mechanism (2), the rotor assembly department (11) of described rotor mechanism (2) is installed, described rotor assembly department (11) is provided with rotor holder structure (111), described housing is provided with the filler opening (161) flowed into for machine oil and the oil outlet (162) flowed out for machine oil, low pressure oil pocket (12) and high-voltage oil cavity (13) is provided with in housing, low pressure oil pocket (12) is communicated with filler opening (161), high-voltage oil cavity (13) is communicated with oil outlet (162), described oil pump also comprises cooperation and is installed on partitioning wall between high-voltage oil cavity (13) and low pressure oil pocket (12).Oil pump provided by the invention can prevent high-voltage oil cavity to low pressure oil pocket oil impregnate, and then improves pump oil efficiency.Present invention also offers the engine front cover lid of oil pump described in a kind of integrated setting, and apply the motor of above-mentioned engine front cover lid.

Description

A kind of oil pump, engine front cover lid and motor

Technical field

The present invention relates to auto parts and components, particularly a kind of oil pump, be provided with the engine front cover lid of said engine oil pump, and apply the motor of above-mentioned engine front cover lid.

Background technique

During engine operation, between the relative motion surface (as bent axle and main bearing, piston and cylinder wall, timing gear wheel set etc.) of driving parts, certainly lead to friction.Friction between metal surface not only can increase the power consumpiton of engine interior, make part time job surface rapid wearing, and due to fricative heat may cause part time job surface scaling loss, cause motor to operate.Therefore, for ensureing engine work, must be lubricated relative motion surface, on friction surface, namely cover one deck lubricant oil (machine oil), make the oil film that alternating floor between metal surface is thin, to reduce surface friction drag, reduce power loss, alleviate component wear, increasing service life of engine.

During engine running, because the operating conditions of each moving parts of motor is different, required sae number is also different, thus will correspondingly take different lubricating systems.The load that the places such as crankshaft main bearing, connecting rod bearing and camshaft bearing bear and speed of related movement are comparatively large, to need oil delivery with the certain pressure of the mode of pressure lubrication, in rubbing surface gap, to form oil film and ensure lubrication.The effect of oil pump is exactly for carrying out pressure lubrication and ensureing oil circulation and set up enough oil pressure, thus makes motor obtain necessary lubrication.

On automobile, the oil pump of motor is generally rotor pump, and rotor pump comprises internal rotor, external rotor, housing, internal rotor and external rotor eccentric setting in pump case, be provided with low pressure oil pocket and high-voltage oil cavity in housing, low pressure oil pocket is communicated with filler opening, and high-voltage oil cavity is communicated with oil outlet.Drive internal rotor to rotate during engine operation, internal rotor drives external rotor to rotate, and is rotated, is sucked by the machine oil of low pressure from filler opening, discharge after becoming the machine oil of high pressure from oil outlet by the cooperation of inner and outer rotors.But the oil pump of prior art, high-voltage oil cavity is higher because of the pressure of itself, so to low pressure oil pocket oil impregnate, can cause the high-voltage oil cavity pressure loss, reduces pump oil efficiency.

Summary of the invention

The present invention solves above-mentioned oil pump to there is oil impregnate phenomenon, and provide a kind of oil pump, this oil pump can reduce oil impregnate phenomenon, and then improves the efficiency of pump oil.

The object of the invention is to be achieved through the following technical solutions:

A kind of oil pump, comprise housing, rotor mechanism, the rotor assembly department of described rotor mechanism is installed, described rotor assembly department is provided with rotor holder structure, described housing is provided with the filler opening flowed into for machine oil and the oil outlet flowed out for machine oil, low pressure oil pocket and high-voltage oil cavity is provided with in housing, low pressure oil pocket is communicated with filler opening, high-voltage oil cavity is communicated with oil outlet, described low pressure oil pocket comprises low pressure oil-feed main oil gallery, described high-voltage oil cavity comprises the fuel-displaced main oil gallery of high pressure, described oil pump also comprises cooperation and is installed on the partitioning wall of will keep apart between high-voltage oil cavity and low pressure oil pocket between high-voltage oil cavity and low pressure oil pocket.

Further, described partitioning wall comprises the main part being arranged on oil outlet edge, and the extension part extended to form to rotor assembly department by described main part.

Further, described extension part is arranged towards the lopsidedness of high-voltage oil cavity.

Further, the oil pump cover that described housing comprises oil pump casing portion and coordinates with described oil pump casing portion, described partitioning wall comprises the first partitioning wall be arranged on oil pump cover, and correspondence is arranged on the second partitioning wall in oil pump casing portion, described first partitioning wall and described second partitioning wall closely cooperate.

Further, described first partitioning wall has the first level and smooth isolation surface, and described second partitioning wall has the second level and smooth isolation surface coordinated with the first isolation surface.

Further, described first partitioning wall and the second partitioning wall are provided with the partitioning wall bolt hole matched, described partitioning wall bolt hole comprises the first partitioning wall bolt hole be arranged on the first partitioning wall, and is arranged on the second partitioning wall bolt hole on the second partitioning wall.

Further, described partitioning wall bolt hole is arranged on the one end near described rotor assembly department.

Further, the width of described partitioning wall is 1.5 times of partitioning wall bolt hole maximum diameter of hole to 2 times.

Further, described rotor assembly department is arranged at the end side of oil pump, and described high-voltage oil cavity, low pressure oil pocket are arranged on the same side of rotor assembly department periphery.

Further, pressure release oil buffer cavity and current limliting wall is also provided with between described partitioning wall and low pressure oil pocket, described current limliting wall is arranged in pressure release oil buffer cavity, pressure release oil buffer cavity is separated into pressure release oil outflow buffer cavity to described current limliting wall and pressure release oil enters buffer cavity, and described pressure release oil outflow buffer cavity and pressure release oil enter buffer cavity and is interconnected.

Further, described rotor assembly department is arranged at the end side of oil pump, and described high-voltage oil cavity, low pressure oil pocket and pressure release oil buffer cavity are arranged on the same side of rotor assembly department periphery.

Further, described current limliting wall one end connects the bottom of rotor holder structure, and the other end connects partitioning wall.

Further, described current limliting wall is provided with connection described pressure release oil and flows out buffer cavity and the oily pressure release oil buffer cavity through hole entering buffer cavity of pressure release.

Further, described pressure release oil flows out between buffer cavity and low pressure oil pocket and is also provided with barrier.

Further, described barrier is arranged at a side of described filler opening, and parallel with the inflow direction of machine oil.

Further, the top end face of described barrier is the arc surface of the rotation tangent direction arc transition along described rotor mechanism.

Present invention also offers a kind of engine front cover lid, described engine front cover covers and is wholely set above-mentioned oil pump.

Present invention also offers a kind of motor applying above-mentioned engine front cover lid.

The partitioning wall of keeping apart between high-voltage oil cavity and low pressure oil pocket prevents the oil of high-voltage oil cavity from oozing out toward low pressure oil pocket by arranging between high-voltage oil cavity and low pressure oil pocket by the present invention, and then reduces the pressure loss of high-voltage oil cavity, improves the efficiency of pump oil.

Accompanying drawing explanation

Fig. 1 is the front view of the oil pump cover of the embodiment of the present invention, and in figure shown in arrow is the flow direction of machine oil.

Fig. 2 is the front view in the oil pump casing portion of the embodiment of the present invention.

Fig. 3 is the stereogram of the oil pump cover of the embodiment of the present invention.

Fig. 4 is that the engine front cover lid of the embodiment of the present invention installs decomposing schematic representation.

Embodiment

In order to make technical problem solved by the invention, technological scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

As shown in Figures 1 to 4, it is a kind of oil pump of the embodiment of the present invention, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 housing being installed described rotor mechanism 2, described rotor assembly department 11 is provided with rotor holder structure 111, described housing is provided with the filler opening 161 flowed into for machine oil and the oil outlet 162 flowed out for machine oil, low pressure oil pocket 12 and high-voltage oil cavity 13 is provided with in housing, low pressure oil pocket 12 is communicated with filler opening 161, high-voltage oil cavity 13 is communicated with oil outlet 162, described low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121, described high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, described oil pump is provided with to coordinate and is installed on the partitioning wall of will keep apart between high-voltage oil cavity 13 and low pressure oil pocket 12 between high-voltage oil cavity 13 and low pressure oil pocket 12.

The partitioning wall of keeping apart between high-voltage oil cavity and low pressure oil pocket prevents the oil of high-voltage oil cavity from oozing out toward low pressure oil pocket by arranging between high-voltage oil cavity and low pressure oil pocket by the embodiment of the present invention, reduces the pressure loss of high-voltage oil cavity, improves the efficiency of pump oil.

Pressure release oil buffer cavity 14 is provided with between described partitioning wall and low pressure oil pocket 12, current limliting wall and barrier 41, described current limliting wall is arranged in described pressure release oil buffer cavity 14, pressure release oil buffer cavity 14 is separated into pressure release oil outflow buffer cavity 141 to described current limliting wall and pressure release oil enters buffer cavity 142, described pressure release oil outflow buffer cavity 141 and pressure release oil enter buffer cavity 142 and are interconnected, described barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and low pressure oil pocket 12, described rotor assembly department 11 is arranged at the end side of oil pump, described high-voltage oil cavity 13, low pressure oil pocket 12 and pressure release oil buffer cavity 14 are arranged on the same side of rotor assembly department 11 periphery, namely away from the side of described rotor assembly department 11.The oil pump cover 16 that described housing comprises oil pump casing portion 15 and coordinates with described oil pump casing portion 15, described filler opening 161 and oil outlet 162 are arranged on described oil pump cover 16.

The embodiment of the present invention is further by arranging pressure release oil buffer cavity between described low pressure oil pocket and high-voltage oil cavity, change the flow direction of pressure release oil and reduce pressure and the flow velocity of pressure release oil, make pressure release oil flow more stable, also by after barrier be set between described low pressure oil pocket and pressure release oil buffer cavity make pressure release oil stable along barrier smooth ingress engine oil pump oil-feed main oil gallery, the low pressure oil preventing pressure release oil from impacting filler opening inflow produces unnecessary eddy current, and then improves the efficiency of pump oil.By described high-voltage oil cavity and low pressure oil pocket and pressure release oil buffering being arranged on the same side of rotor mechanism periphery, making the more compact structure of oil pump, taking up room less, the miniaturization of motor being conducive to oil pump and being installed together with oil pump.

Described current limliting wall one end connects the bottom of rotor holder structure 111, and the other end connects partitioning wall.Described rotor holder structure 111, current limliting wall, partitioning wall jointly form pressure release oil and enter buffer cavity 142.Described current limliting wall, partitioning wall, barrier 41 jointly form pressure release oil and flow out buffer cavity 141.Described current limliting wall is provided with and is communicated with described pressure release oil outflow buffer cavity 141 and the oily pressure release oil buffer cavity through hole 421 entering buffer cavity 142 of pressure release.

Because pressure release oil pressure is larger than the machine oil flow velocity flowed into from filler opening 16, pressure is high, if the low pressure oil-feed main oil gallery 121 of oil pump directly poured into by pressure release oil, the machine oil main flow direction of low pressure oil-feed main oil gallery 121 can be caused to be hit, form unnecessary eddy current, reduce pump oil efficiency.In order to reduce the impact force of described pressure release oil to machine oil in low pressure oil-feed main oil gallery 121, reduce eddy current, improve pump oil efficiency, described barrier 41 is arranged at a side of described filler opening 161, and parallel with the inflow direction of machine oil.In order to make pressure release machine oil along the flowing of rotor turns tangent direction further, improve pump oil efficiency, the top end face of described barrier 41 is the arc surface of the rotation tangent direction arc transition along described rotor mechanism 2.

Described low pressure oil-feed main oil gallery 121 and the fuel-displaced main oil gallery 131 of high pressure are arranged on oil pump cover 16.Described current limliting wall comprises the oil pump cover current limliting wall 422 be arranged on oil pump cover 16, and is arranged on the oil pump casing portion current limliting wall 423 in oil pump casing portion 15; Described pressure release oil buffer cavity through hole 421 is arranged on oil pump cover current limliting wall 422.

Described partitioning wall comprises the first partitioning wall 31 be arranged on oil pump cover 16, and correspondence is arranged on the second partitioning wall 32 in oil pump casing portion 15, and described first partitioning wall 31 closely cooperates with described second partitioning wall 32.Described first partitioning wall 31 comprises the first main part 311 being arranged on oil outlet 162 edge, and the first extension part 312 extended to form to rotor assembly department 11 by described first main part 311.Described second partitioning wall 32 comprises the second main part 321 being arranged on oil outlet 162 edge, and the second extension part 322 extended to form to rotor assembly department 11 by described second main part 321.

Preferably, described first extension part 312 and the second extension part 322 are arranged towards the lopsidedness of high-voltage oil cavity 13, are beneficial to the guiding flowed to the machine oil in high-voltage oil cavity.

Tightr in order to make the first partitioning wall 31 and the second partitioning wall 32 fit, the first isolation surface 313 that described first partitioning wall 31 is level and smooth, described second partitioning wall 32 has the second level and smooth isolation surface 323 coordinated with the first isolation surface 313.

In order to increase the impacting force between the first partitioning wall 31 and the second partitioning wall 32, prevent oil impregnate further, described first partitioning wall 31 and the second partitioning wall 32 are provided with the partitioning wall bolt hole matched, described partitioning wall bolt hole is arranged on the one end near described rotor assembly department 11, described partitioning wall bolt hole comprises the first partitioning wall bolt hole 314 be arranged on the first partitioning wall 31, and is arranged on the second partitioning wall bolt hole 324 on the second partitioning wall 32.More even in order to make described first partitioning wall 31 and the second partitioning wall 32 be subject to impacting force, can multiple bolt hole be set at the diverse location around hydraulic fluid port 162, be more conducive to realizing low pressure oil pocket 12 and the isolation completely of high-voltage oil cavity 13, prevents oil impregnate phenomenon.

The width of described partitioning wall, wider than other surface of contact, is preferably 1.5 times to 2 times of partitioning wall bolt hole maximum diameter of hole.Described partitioning wall bolt hole is arranged in the middle of partitioning wall, is preferably arranged on the extension part of partitioning wall, partitioning wall bolt hole is arranged in the side near rotor assembly department 11, makes the global stability of oil pump better like this.

Preferably, described pressure release oil flows out in buffer cavity 141 pressure relief opening being also provided with and changing pressure release oil and flow to, described pressure relief opening is arranged on oil pump cover 16, described pressure release oil flows out in buffer cavity 141 and is provided with decompression mechanism 6, described decompression mechanism 6 comprises pressure-limit valve 61, limiting valve spring mechanism 62 and spring seat 63, pressure relief opening ensures that decompression mechanism 6 in axial direction moves smooth and easy when draining, not clamping stagnation.

Described pressure relief opening is symmetricly set on the both sides of decompression mechanism 6, described pressure relief opening comprises the first pressure relief opening 1411 and the second pressure relief opening 1412, described first pressure relief opening 1411 and the second pressure relief opening 1412 are symmetrical arranged relative to the center line of described pressure release oil buffer cavity through hole 421, in the present embodiment, the section shape of described first pressure relief opening 1411 and the second pressure relief opening 1412 is right-angled trapezium, and one end of described first pressure relief opening 1411 is provided with opening.The section shape of described first pressure relief opening 1411 and the second pressure relief opening 1412 can be also other shapes, if any the circle of opening, and triangle or other shapes.

In the present embodiment, the external rotor 22 that described rotor mechanism 2 comprises internal rotor 21, coordinates with described internal rotor 21, internal rotor 21 is fixed on rotor shaft, described internal rotor 21 is driven by rotor shaft, as shown in Figure 4, the inner ring that described internal rotor 21 and rotor shaft assemble is provided with flat department 211, and described internal rotor is fixed on rotor shaft by key or pin, described external rotor 22 is free to rotate in housing, has certain throw of eccentric between internal rotor 21 and external rotor 22.When internal rotor 21 rotates, external rotor 22 is driven to rotate.Internal rotor 214 has 7 double wedges, external rotor 22 has 8 recessed teeth, like this, and internal rotor 21 and the nonsynchronous in the same way rotation of external rotor 22 under the driving of rotor shaft, the more more compact structure that can make oil pump of double wedge, fuel delivery is large, and fuel feeding is even, and noise is little, oil suction degree of vacuum is high, to ensure that machine oil is at lubrication system internal circulation flow, when rotor tooth form profile design must make rotor forward any angle to, the tooth form line of internal rotor 21 and each tooth of external rotor 22 can form point cantact mutually.In Fig. 1 shown in arrow is the flow direction of machine oil, at the low pressure oil pocket 12 be communicated with filler opening 161, because rotor mechanism 2 throws off engagement, volume increases gradually, produce vacuum, machine oil is inhaled into, rotor mechanism 2 continues to rotate, machine oil quilt is until the side of oil outlet 162, at this time, rotor just in time enters engagement, oil pressure is raised, machine oil is extruded between cog, enter into high-voltage oil cavity 13 respectively and pressure release oil enters buffer cavity 142, the machine oil entering into high-voltage oil cavity 13 is flowed out by oil outlet 162, flow out in buffer cavity 141 at pressure release oil and be provided with decompression mechanism 6, described decompression mechanism 6 comprises pressure-limit valve 61, limiting valve spring mechanism 62 and spring seat 63, if the pressure of machine oil is excessive, then oil pressure makes pressure-limit valve 61 open, part machine oil enters buffer cavity 142 from pressure release oil and flows out to pressure release oil outflow buffer cavity 141, described pressure release oil enters buffer cavity 142 and pressure release oil flows out buffer cavity 141 pairs of double bufferings of pressure release oil formation, change the flow direction of pressure release oil and reduce pressure and the flow velocity of pressure release oil, enter into the oily flow direction changing again pressure release oil through pressure relief opening further of pressure release that pressure release oil flows out buffer cavity 141, make pressure release oil flow more stable, the runner of described pressure release oil between barrier 41 and current limliting wall, because barrier 41 is parallel with the machine oil inflow direction of filler opening 161, therefore pressure release oil can not produce greater impact to the machine oil of filler opening 161, the pressure release oil flowed out enters next circulation together with the machine oil from filler opening 161.In the flow process of machine oil, because there is the existence of partitioning wall, making when pressure-limit valve 61 is not opened, is completely isolated between high-voltage oil cavity 13 and low pressure oil pocket 12, can prevent the pressure loss because high-voltage oil cavity 13 oil impregnate causes, and improves the efficiency of pump oil.

Present invention also offers a kind of engine front cover lid applying said engine oil pump, described engine front cover covers and is wholely set above-mentioned oil pump.As shown in Figure 4, it is the assembling schematic diagram of the engine front cover lid of the embodiment of the present invention, described engine front cover lid comprises front cover body 5, the organic oil pump of integrated setting on described front cover body 5, particularly, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 housing being installed described rotor mechanism 2, described rotor assembly department 11 is provided with rotor holder structure 111, described housing is provided with the filler opening 161 flowed into for machine oil and the oil outlet 162 flowed out for machine oil, low pressure oil pocket 12 and high-voltage oil cavity 13 is provided with in housing, low pressure oil pocket 12 is communicated with filler opening 161, high-voltage oil cavity 13 is communicated with oil outlet 162, described low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121, described high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, described oil pump is provided with to coordinate and is installed on the partitioning wall of will keep apart between high-voltage oil cavity 13 and low pressure oil pocket 12 between high-voltage oil cavity 13 and low pressure oil pocket 12, pressure release oil buffer cavity 14 is provided with between described partitioning wall and low pressure oil pocket 12, current limliting wall and barrier 41, described current limliting wall is arranged in described pressure release oil buffer cavity 14, pressure release oil buffer cavity 14 is separated into pressure release oil outflow buffer cavity 141 to described current limliting wall and pressure release oil enters buffer cavity 142, described pressure release oil outflow buffer cavity 141 and pressure release oil enter buffer cavity 142 and are interconnected, described barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and low pressure oil pocket 12, described rotor assembly department 11 is arranged at the end side of oil pump, described high-voltage oil cavity 13, low pressure oil pocket 12 and pressure release oil buffer cavity 14 are arranged on the same side of rotor assembly department 11 periphery, namely away from the side of described rotor assembly department 11.

The engine front cover lid of the embodiment of the present invention and described oil pump integrated setting, be conducive to the structure simplifying motor, and facilitate the maintenance dismounting of oil pump.

The embodiment of the present invention additionally provides a kind of motor applying above-mentioned engine front cover lid, and described motor comprises cylinder cap, is connected to the cylinder body of cylinder cap bottom, and is arranged on the engine front cover lid of cylinder cap and cylinder body front end, and described cylinder base connects oil sump.Described engine front cover covers integrated setting above-mentioned oil pump, described engine front cover lid comprises front cover body 5, the organic oil pump of integrated setting on described front cover body 5, particularly, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 housing being installed described rotor mechanism 2, described rotor assembly department 11 is provided with rotor holder structure 111, described housing is provided with the filler opening 161 flowed into for machine oil and the oil outlet 162 flowed out for machine oil, low pressure oil pocket 12 and high-voltage oil cavity 13 is provided with in housing, low pressure oil pocket 12 is communicated with filler opening 161, high-voltage oil cavity 13 is communicated with oil outlet 162, described low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121, described high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, described oil pump is provided with to coordinate and is installed on the partitioning wall of will keep apart between high-voltage oil cavity 13 and low pressure oil pocket 12 between high-voltage oil cavity 13 and low pressure oil pocket 12, pressure release oil buffer cavity 14 is provided with between described partitioning wall and low pressure oil pocket 12, current limliting wall and barrier 41, described current limliting wall is arranged in described pressure release oil buffer cavity 14, pressure release oil buffer cavity 14 is separated into pressure release oil outflow buffer cavity 141 to described current limliting wall and pressure release oil enters buffer cavity 142, described pressure release oil outflow buffer cavity 141 and pressure release oil enter buffer cavity 142 and are interconnected, described barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and low pressure oil pocket 12, described rotor assembly department 11 is arranged at the end side of oil pump, described high-voltage oil cavity 13, low pressure oil pocket 12 and pressure release oil buffer cavity 14 are arranged on the same side of rotor assembly department 11 periphery, namely away from the side of described rotor assembly department 11.The oil pump cover 16 that described housing comprises oil pump casing portion 15 and coordinates with described oil pump casing portion 15, described filler opening 161 and oil outlet 162 are arranged on described oil pump cover 16.

The engine front cover lid of the motor of the embodiment of the present invention and described oil pump integrated setting, be conducive to the structure simplifying motor, and facilitate the maintenance dismounting of oil pump.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (18)

1. an oil pump, comprise housing, rotor mechanism (2), the rotor assembly department (11) of described rotor mechanism (2) is installed, described rotor assembly department (11) is provided with rotor holder structure (111), described housing is provided with the filler opening (161) flowed into for machine oil and the oil outlet (162) flowed out for machine oil, low pressure oil pocket (12) and high-voltage oil cavity (13) is provided with in housing, low pressure oil pocket (12) is communicated with filler opening (161), high-voltage oil cavity (13) is communicated with oil outlet (162), described low pressure oil pocket (12) comprises low pressure oil-feed main oil gallery (121), described high-voltage oil cavity (13) comprises the fuel-displaced main oil gallery of high pressure (131), it is characterized in that, described oil pump also comprises cooperation and is installed on the partitioning wall of will keep apart between high-voltage oil cavity (13) and low pressure oil pocket (12) between high-voltage oil cavity (13) and low pressure oil pocket (12), pressure release oil buffer cavity (14) is also provided with between described partitioning wall and described low pressure oil pocket (12).
2. oil pump according to claim 1, is characterized in that, described partitioning wall comprises the main part being arranged on oil outlet (162) edge, and the extension part extended to form to rotor assembly department by described main part.
3. oil pump according to claim 2, is characterized in that, described extension part is arranged towards the lopsidedness of high-voltage oil cavity (13).
4. oil pump according to claim 1, is characterized in that, the oil pump cover (16) that described housing comprises oil pump casing portion (15) and coordinates with described oil pump casing portion (15),
Described partitioning wall comprises the first partitioning wall (31) be arranged on oil pump cover (16), and correspondence is arranged on the second partitioning wall (32) in oil pump casing portion (15), described first partitioning wall (31) and described second partitioning wall (32) closely cooperate.
5. oil pump according to claim 4, it is characterized in that, described first partitioning wall (31) has level and smooth the first isolation surface (313), and described second partitioning wall (32) has level and smooth the second isolation surface (323) coordinated with the first isolation surface (313).
6. oil pump according to claim 4, it is characterized in that, described first partitioning wall (31) and the second partitioning wall (32) are provided with the partitioning wall bolt hole matched, described partitioning wall bolt hole comprises the first partitioning wall bolt hole (314) be arranged on the first partitioning wall (31), and is arranged on the second partitioning wall bolt hole (324) on the second partitioning wall (32).
7. oil pump according to claim 6, is characterized in that, described partitioning wall bolt hole is arranged on the one end near described rotor assembly department (11).
8. oil pump according to claim 6, is characterized in that, the width of described partitioning wall is 1.5 times of partitioning wall bolt hole maximum diameter of hole to 2 times.
9. oil pump according to claim 1, it is characterized in that, described rotor assembly department (11) is arranged at the end side of oil pump, and described high-voltage oil cavity (13), low pressure oil pocket (12) are arranged on the same side of rotor assembly department (11) periphery.
10. oil pump according to claim 1, it is characterized in that, current limliting wall is also provided with between described partitioning wall and low pressure oil pocket (12), described current limliting wall is arranged in pressure release oil buffer cavity (14), pressure release oil buffer cavity (14) is separated into pressure release oil outflow buffer cavity (141) to described current limliting wall and pressure release oil enters buffer cavity (142), and described pressure release oil outflow buffer cavity (141) and pressure release oil enter buffer cavity (142) and is interconnected.
11. oil pump according to claim 10, it is characterized in that, described rotor assembly department (11) is arranged at the end side of oil pump, and described high-voltage oil cavity (13), low pressure oil pocket (12) and pressure release oil buffer cavity (14) are arranged on the same side of rotor assembly department (11) periphery.
12. oil pump according to claim 10, is characterized in that, described current limliting wall one end connects the bottom of rotor holder structure (111), and the other end connects partitioning wall.
13. oil pump according to claim 10, it is characterized in that, described current limliting wall is provided with and is communicated with described pressure release oil and flows out oily buffer cavity through hole (421) of pressure release that buffer cavity (141) and pressure release oil enter buffer cavity (412).
14. oil pump according to claim 10, is characterized in that, described pressure release oil flows out between buffer cavity (141) and low pressure oil pocket (12) and is also provided with barrier (41).
15. oil pump according to claim 14, is characterized in that, described barrier (41) is arranged at a side of described filler opening (161), and parallel with the inflow direction of machine oil.
16. oil pump according to claim 14, is characterized in that, the top end face of described barrier (41) is the arc surface of the rotation tangent direction arc transition along described rotor mechanism.
17. 1 kinds of engine front cover lids, is characterized in that, described engine front cover covers the oil pump be integrally formed with as described in any one of claim 1-16.
18. 1 kinds of motors, is characterized in that, described motor is provided with engine front cover lid as claimed in claim 17.
CN201210087044.3A 2012-03-29 2012-03-29 A kind of oil pump, engine front cover lid and motor CN103363277B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210087044.3A CN103363277B (en) 2012-03-29 2012-03-29 A kind of oil pump, engine front cover lid and motor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201210087044.3A CN103363277B (en) 2012-03-29 2012-03-29 A kind of oil pump, engine front cover lid and motor
US14/380,052 US9869313B2 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
PCT/CN2013/073354 WO2013143476A1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
EP13768663.0A EP2834485B1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same

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CN103363277A CN103363277A (en) 2013-10-23
CN103363277B true CN103363277B (en) 2015-12-02

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CN106907564A (en) * 2017-05-08 2017-06-30 湖南机油泵股份有限公司 A kind of machine oil refrigerating module housing being improved to drain path

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CN201892018U (en) * 2010-11-25 2011-07-06 湖南机油泵股份有限公司 Reflux pressure limiting rotor oil pump
CN202596832U (en) * 2012-03-29 2012-12-12 比亚迪股份有限公司 Oil pump, engine front cover cap and engine

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CN201087731Y (en) * 2007-07-21 2008-07-16 奇瑞汽车有限公司 Roter type engine oil pump of car engine
CN201723266U (en) * 2010-06-18 2011-01-26 上海幸福摩托车有限公司 Oil pump for automobile engine
CN201892018U (en) * 2010-11-25 2011-07-06 湖南机油泵股份有限公司 Reflux pressure limiting rotor oil pump
CN202596832U (en) * 2012-03-29 2012-12-12 比亚迪股份有限公司 Oil pump, engine front cover cap and engine

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