CN103363278A - Oil pump, engine front cover and engine - Google Patents

Oil pump, engine front cover and engine Download PDF

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Publication number
CN103363278A
CN103363278A CN2012100870566A CN201210087056A CN103363278A CN 103363278 A CN103363278 A CN 103363278A CN 2012100870566 A CN2012100870566 A CN 2012100870566A CN 201210087056 A CN201210087056 A CN 201210087056A CN 103363278 A CN103363278 A CN 103363278A
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CN
China
Prior art keywords
oil
pressure
cavity
oil pump
pressure release
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CN2012100870566A
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Chinese (zh)
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CN103363278B (en
Inventor
郑俊丽
刘静
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 CN201210087056.6A priority Critical patent/CN103363278B/en
Priority claimed from EP13769797.5A external-priority patent/EP2831487B1/en
Publication of CN103363278A publication Critical patent/CN103363278A/en
Application granted granted Critical
Publication of CN103363278B publication Critical patent/CN103363278B/en

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Abstract

The invention discloses an oil pump comprising a casing, a rotor mechanism (2) and a rotor installation assembly (11) arranged on the casing and used for installation of the rotor mechanism (2). An oil inlet (161) for inflowing of oil and an oil outlet (162) for outflowing of oil are formed in the casing; a low-pressure oil cavity (12) and a high-pressure oil cavity (13) are arranged in the casing, the low-pressure oil cavity (12) is communicated with the oil inlet (161), and the high-pressure oil cavity (13) is communicated with the oil outlet (162); a pressure-relief oil buffer cavity (14) is arranged between the low-pressure oil cavity (12) and the high-pressure oil cavity (13); a barrier wall (41) is arranged between the low-pressure oil cavity (12) and the pressure-relief oil buffer cavity (14). The oil pumping efficiency of the oil pump is improved. The invention further provides an engine front cover which is integrated with the oil pump and an engine which is provided with the engine front cover.

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 is provided with the engine front cover lid of said engine oil pump, and has used the motor that above-mentioned engine front cover covers.

Background technique

During engine operation, certainly lead to friction between the relative motion surface of driving parts (such as bent axle and main bearing, piston and cylinder wall, timing gear wheel set etc.).Friction between the metal surface not only can increase the power consumpiton of engine interior, makes part time job surface rapid wearing, and because fricative heat may cause part time job surface scaling loss, causes motor to turn round.Therefore, for guaranteeing engine work, must be lubricated relative motion surface, namely cover one deck lubricant oil (machine oil) at friction surface, make the thin oil film of alternating floor between the metal surface, 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, desired sae number is also different, thereby will correspondingly take different lubricating systems.Load and speed of related movement that crankshaft main bearing, connecting rod bearing and camshaft bearing etc. are located to bear are larger, need to the mode of pressure lubrication with certain pressure with oil delivery in the rubbing surface gap, form oil film and guarantee lubricated.The effect of oil pump is exactly to set up enough oil pressure for carrying out pressure lubrication with the assurance oil circulation, thereby makes motor obtain necessary lubricating.

On automobile, the oil pump of motor generally is 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 the housing, the low pressure oil pocket is communicated with filler opening, and high-voltage oil cavity is communicated with oil outlet.Drive internal rotor during engine operation and rotate, internal rotor drives external rotor and rotates, and rotates by the cooperation of inner and outer rotors, and the machine oil of low pressure is sucked from filler opening, discharges from oil outlet after becoming the machine oil of high pressure.Generally all be provided with decompression mechanism on the general oil pump, when the oil pump internal pressure was too high, decompression mechanism work gushed the machine oil of part high pressure from decompression mechanism.But the fuel pump structure of prior art, its pressure release oil is directly poured into oil pump oil-feed main oil gallery, causes main oil gallery machine oil main flow direction to be hit, and forms unnecessary eddy current, thereby has reduced pump oil efficient.

Summary of the invention

The present invention can directly pour into oil pump oil-feed main oil gallery for solving above-mentioned oil pump because of pressure release oil, main oil gallery machine oil main flow direction is hit causes the inefficient technical problem of pump oil, a kind of oil pump is provided, this oil pump can reduce pressure release oil to the impact of low pressure oil, reduce the loss of machine oil, improve pump oil efficient.

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

A kind of oil pump, comprise housing, rotor mechanism, be arranged on the rotor assembly department that described rotor mechanism is installed on the housing, be provided with the rotor holder structure on the described rotor assembly department, described housing is provided with the filler opening that flows into for machine oil and the oil outlet that flows out for machine oil, be provided with low pressure oil pocket and high-voltage oil cavity in the housing, the 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, be provided with pressure release oil buffer cavity between described low pressure oil pocket and the high-voltage oil cavity, also be provided with barrier between described low pressure oil pocket and the pressure release oil buffer cavity.

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 along the rotation tangent direction arc transition of described rotor mechanism.

Further, also comprise the current limliting wall that is arranged in the oily buffer cavity of pressure release, 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 housing comprises oil pump casing section and the oil pump cover that cooperates with described oil pump casing section, and described filler opening and oil outlet are arranged on the described oil pump cover; Described current limliting wall comprises the oil pump cover current limliting wall that is arranged on the oil pump cover, and is arranged on the oil pump casing section current limliting wall in the oil pump casing section; Be provided with the pressure release oil buffer cavity through hole that connection described pressure release oil outflow buffer cavity and pressure release oil enter buffer cavity on the described oil pump cover current limliting wall.

Further, described pressure release oil flows out also to be provided with in the buffer cavity and changes the pressure relief opening that described pressure release oil flows to, and described pressure relief opening comprises the first pressure relief opening and the second pressure relief opening that is symmetrically set.

Further, the section shape of described the first pressure relief opening and the second pressure relief opening is right-angled trapezium, and an end of described the first pressure relief opening is provided with opening.

Further, described oil pump comprises that also cooperation is installed between described high-voltage oil cavity and the pressure release oil buffer cavity the partitioning wall of keeping apart between high-voltage oil cavity and the pressure release oil buffer cavity.

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

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

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

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

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

The present invention also provides a kind of motor of having used above-mentioned engine front cover lid.

The present invention is by arranging pressure release oil buffer cavity between described low pressure oil pocket and high-voltage oil cavity, the pressure and the flow velocity that change the flow direction of pressure release oil and reduce pressure release oil, make pressure release oil flow more stable, also by being set between described low pressure oil pocket and pressure release oil buffer cavity, barrier make oily the stablizing afterwards of pressure release enter smoothly oil pump oil-feed main oil gallery along barrier, prevent that pressure release oil from impacting the unnecessary eddy current of low pressure oil generation that filler opening flows into, and then improve the efficient of pump oil.

Description of drawings

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

Fig. 2 is the front view of the oil pump casing section of the embodiment of the invention.

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

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

Embodiment

In order to make technical problem solved by the invention, technological scheme and beneficial effect clearer, 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, is 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 invention, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 that described rotor mechanism 2 is installed on the housing, be provided with rotor holder structure 111 on the described rotor assembly department 11, described housing is provided with the filler opening 161 that flows into for machine oil and the oil outlet 162 that flows out for machine oil, be provided with low pressure oil pocket 12 and high-voltage oil cavity 13 in the 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

Be provided with pressure release oil buffer cavity 14 between described low pressure oil pocket 12 and the high-voltage oil cavity 13, also be provided with barrier 41 between described low pressure oil pocket 12 and the pressure release oil buffer cavity 14.

The embodiment of the invention is by arranging pressure release oil buffer cavity between described low pressure oil pocket and high-voltage oil cavity, the pressure and the flow velocity that change the flow direction of pressure release oil and reduce pressure release oil, make pressure release oil flow more stable, also by being set between described low pressure oil pocket and pressure release oil buffer cavity, barrier make oily the stablizing afterwards of pressure release enter smoothly oil pump oil-feed main oil gallery along barrier, prevent that pressure release oil from impacting the unnecessary eddy current of low pressure oil generation that filler opening flows into, and then improve the efficient of pump oil.

Preferably, described oil pump also is provided with to cooperate and is installed between high-voltage oil cavity 13 and the low pressure oil pocket 12 partitioning wall of keeping apart between high-voltage oil cavity 13 and the low pressure oil pocket 12; Being provided with pressure release oil buffer cavity 14 and the described current limliting wall of current limliting wall between described partitioning wall and the low pressure oil pocket 12 is arranged in the 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, and described barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and the low pressure oil pocket 12.

Preferably, described rotor assembly department 11 is arranged at the distolateral 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 peripheries, namely away from a side of described rotor assembly department 11.Described housing comprises oil pump casing section 15 and the oil pump cover 16 that cooperates with described oil pump casing section 15, and described filler opening 161 and oil outlet 162 are arranged on the described oil pump cover 16.

The embodiment of the invention also prevents that by the partitioning wall of keeping apart the oil of high-voltage oil cavity from oozing out toward the low pressure oil pocket between arranging high-voltage oil cavity and low pressure oil pocket between high-voltage oil cavity and the low pressure oil pocket, reduce the pressure loss of high-voltage oil cavity, improves the efficient 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, make the more compact structure of oil pump again, it is less to take up room, and is conducive to oil pump and the miniaturization of the motor that is 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, the barrier 41 common pressure release oil that form flow out buffer cavity 141.Be provided with the pressure release oil buffer cavity through hole 421 that connection described pressure release oil outflow buffer cavity 141 and pressure release oil enter buffer cavity 142 on the described current limliting wall.

The machine oil flow velocity that flows into from filler opening 16 because of pressure release oil pressure ratio is large, pressure is high, if pressure release oil is directly poured into the low pressure oil-feed main oil gallery 121 of oil pump, can cause the machine oil main flow direction of low pressure oil-feed main oil gallery 121 to be hit, form unnecessary eddy current, reduce pump oil efficient.In order to reduce described pressure release oil to the impact force of machine oil in the low pressure oil-feed main oil gallery 121, reduce eddy current, improve pump oil efficient, described barrier 41 is arranged at a side of described filler opening 161, and parallel with the inflow direction of machine oil.Flow in order further to make pressure release machine oil rotate tangent direction along rotor, improve pump oil efficient, the top end face of described barrier 41 is the arc surface along the rotation tangent direction arc transition of 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 the oil pump cover 16.Described current limliting wall comprises the oil pump cover current limliting wall 422 that is arranged on the oil pump cover 16, and is arranged on the oil pump casing section current limliting wall 423 in the oil pump casing section 15; Described pressure release oil buffer cavity through hole 421 is arranged on the oil pump cover current limliting wall 422.

Described partitioning wall comprises the first partitioning wall 31 that is arranged on the oil pump cover 16, and corresponding the second partitioning wall 32 that is arranged in the oil pump casing section 15, and described the first partitioning wall 31 closely cooperates with described the second partitioning wall 32.

Described the first partitioning wall 31 comprises the first main part 311 that is arranged on oil outlet 162 edges, and the first extension part 312 that is extended to form to rotor assembly department 11 by described the first main part 311.Described the second partitioning wall 32 comprises the second main part 321 that is arranged on oil outlet 162 edges, and the second extension part 322 that is extended to form to rotor assembly department 11 by described the second main part 321.

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

Tightr for the first partitioning wall 31 and the second partitioning wall 32 are fitted, the first level and smooth isolation surface 313 of described the first partitioning wall 31, described the second partitioning wall 32 has the second level and smooth isolation surface 323 that cooperates 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, further prevent oil impregnate, be provided with the partitioning wall bolt hole that matches on described the first partitioning wall 31 and the second partitioning wall 32, described partitioning wall bolt hole is arranged on the end near described rotor assembly department 11, described partitioning wall bolt hole comprises the first partitioning wall bolt hole 314 that is 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 the first partitioning wall 31 and the second partitioning wall 32 be subject to impacting force, a plurality of bolts hole can be set at the diverse location around hydraulic fluid port 162, more be conducive to realize the completely isolation of low pressure oil pocket 12 and high-voltage oil cavity 13, prevent the oil impregnate phenomenon.

The width of described partitioning wall is 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 the partitioning wall, preferably is arranged on the extension part of partitioning wall, and the partitioning wall bolt hole is arranged in a side near rotor assembly department 11, makes like this global stability of oil pump better.

Preferably, described pressure release oil flows out also to be provided with in the buffer cavity 141 and changes the pressure relief opening that pressure release oil flows to, described pressure relief opening is arranged on the oil pump cover 16, described pressure release oil flows out in the 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 guarantee that decompression mechanism 6 in axial direction moves when draining smooth and easy, 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 the first pressure relief opening 1411 and the second pressure relief opening 1412 are symmetrical arranged with respect to the center line of described pressure release oil buffer cavity through hole 421, in the present embodiment, the section shape of described the first pressure relief opening 1411 and the second pressure relief opening 1412 is right-angled trapezium, and an end of described the first pressure relief opening 1411 is provided with opening.The section shape of described the first pressure relief opening 1411 and the second pressure relief opening 1412 also can be other shapes, if any the circle of opening, and triangle or other shapes.

In the present embodiment, described rotor mechanism 2 comprises internal rotor 21, the external rotor 22 that cooperates with described internal rotor 21, internal rotor 21 is fixed on the rotor shaft, described internal rotor 21 is driven by rotor shaft, as shown in Figure 4, be provided with flat department 211 on the inner ring of described internal rotor 21 and rotor shaft assembling, described internal rotor is fixed on the rotor shaft by key or pin, described external rotor 22 is free to rotate in housing, between internal rotor 21 and the external rotor 22 certain throw of eccentric is arranged.When internal rotor 21 rotation, drive external rotor 22 rotations.Internal rotor 214 has 7 double wedges, external rotor 22 has 8 recessed teeth, like this, and the nonsynchronous in the same way rotation of internal rotor 21 and 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 guarantee that machine oil circulates in lubrication system, when the rotor tooth form profile design must make rotor forward any angle to, the mutual point that forms of total energy contacted on the profile of tooth flank profil line of internal rotor 21 and external rotor 22 each tooth.Among Fig. 1 shown in the arrow is the flow direction of machine oil, at the low pressure oil pocket 12 that is communicated with filler opening 161, because rotor mechanism 2 is thrown off engagement, volume increases gradually, produce vacuum, machine oil is inhaled into, rotor mechanism 2 continues rotation, the machine oil quilt is by the time a side of oil outlet 162, at this time, rotor just in time enters engagement, oil pressure is raise, machine oil is extruded between cog, enter into respectively high-voltage oil cavity 13 and pressure release oil enters buffer cavity 142, the machine oil that enters into high-voltage oil cavity 13 flows out by oil outlet 162, in pressure release oil outflow buffer cavity 141, 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 is opened pressure-limit valve 61, 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 the double buffering of buffer cavity 141 pairs of pressure release oil formation, the pressure and the flow velocity that change the flow direction of pressure release oil and reduce pressure release oil, the pressure release oil that enters into pressure release oil outflow buffer cavity 141 further changes again the flow direction of pressure release oil through pressure relief opening, make pressure release oil flow more stable, during the oily runner that passes through between barrier 41 and the current limliting wall of described pressure release, parallel with the machine oil inflow direction of filler opening 161 because of barrier 41, so pressure release oil can not produce greater impact to the machine oil of filler opening 161, the pressure release oil of outflow enters next circulation with the machine oil from filler opening 161.In the flow process of machine oil, because the existence of partitioning wall is arranged, so that when pressure-limit valve 61 is not opened, isolate fully between high-voltage oil cavity 13 and the low pressure oil pocket 12, can prevent the pressure loss that causes because of high-voltage oil cavity 13 oil impregnates, improve the efficient of pump oil.

The present invention also provides a kind of engine front cover lid of having used the said engine oil pump, and described engine front cover covers and is wholely set above-mentioned oil pump.As shown in Figure 4, it is the assembling schematic representation of the engine front cover lid of the embodiment of the invention, described engine front cover lid comprises front cover body 5, the organic oil pump of integrated setting on the described front cover body 5, particularly, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 that described rotor mechanism 2 is installed on the housing, be provided with rotor holder structure 111 on the described rotor assembly department 11, described housing is provided with the filler opening 161 that flows into for machine oil and the oil outlet 162 that flows out for machine oil, be provided with low pressure oil pocket 12 and high-voltage oil cavity 13 in the 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, and described oil pump is provided with to cooperate and is installed between high-voltage oil cavity 13 and the low pressure oil pocket 12 partitioning wall of keeping apart between high-voltage oil cavity 13 and the low pressure oil pocket 12; Be provided with pressure release oil buffer cavity 14 between described partitioning wall and the low pressure oil pocket 12, current limliting wall and barrier 41, described current limliting wall is arranged in the 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 the low pressure oil pocket 12, described rotor assembly department 11 is arranged at the distolateral of oil pump, described high-voltage oil cavity 13, low pressure oil pocket 12 and pressure release oil buffer cavity 14 is arranged on the same side of rotor assembly department 11 peripheries, namely away from a side of described rotor assembly department 11.

Engine front cover lid and the described oil pump integrated setting of the embodiment of the invention are conducive to simplify the structure of motor, and make things convenient for the maintenance dismounting of oil pump.

The embodiment of the invention also provides a kind of motor of having used above-mentioned engine front cover lid, and described motor comprises cylinder cap, is connected in the cylinder body of cylinder cap bottom, and is installed in 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 the described front cover body 5, particularly, described oil pump comprises housing, rotor mechanism 2, be arranged on the rotor assembly department 11 that described rotor mechanism 2 is installed on the housing, be provided with rotor holder structure 111 on the described rotor assembly department 11, described housing is provided with the filler opening 161 that flows into for machine oil and the oil outlet 162 that flows out for machine oil, be provided with low pressure oil pocket 12 and high-voltage oil cavity 13 in the 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, and described oil pump is provided with to cooperate and is installed between high-voltage oil cavity 13 and the low pressure oil pocket 12 partitioning wall of keeping apart between high-voltage oil cavity 13 and the low pressure oil pocket 12; Be provided with pressure release oil buffer cavity 14 between described partitioning wall and the low pressure oil pocket 12, current limliting wall and barrier 41, described current limliting wall is arranged in the 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 the low pressure oil pocket 12, described rotor assembly department 11 is arranged at the distolateral of oil pump, described high-voltage oil cavity 13, low pressure oil pocket 12 and pressure release oil buffer cavity 14 is arranged on the same side of rotor assembly department 11 peripheries, namely away from a side of described rotor assembly department 11.Described housing comprises oil pump casing section 15 and the oil pump cover 16 that cooperates with described oil pump casing section 15, and described filler opening 161 and oil outlet 162 are arranged on the described oil pump cover 16.

Engine front cover lid and the described oil pump integrated setting of the motor of the embodiment of the invention are conducive to simplify the structure of motor, and make things convenient for the maintenance dismounting of oil pump.

The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. oil pump, comprise housing, rotor mechanism (2), be arranged on the rotor assembly department (11) that described rotor mechanism (2) is installed on the housing, be provided with rotor holder structure (111) on the described rotor assembly department (11), described housing is provided with the filler opening (161) that flows into for machine oil and the oil outlet (162) that flows out for machine oil, be provided with low pressure oil pocket (12) and high-voltage oil cavity (13) in the housing, low pressure oil pocket (12) is communicated with (161) with filler opening, 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 comprises the fuel-displaced main oil gallery of high pressure (131), it is characterized in that, be provided with pressure release oil buffer cavity (14) between described low pressure oil pocket (12) and the high-voltage oil cavity (13), also be provided with barrier (41) between described low pressure oil pocket (12) and the pressure release oil buffer cavity (14).
2. oil pump according to claim 1 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.
3. oil pump according to claim 1 is characterized in that, the top end face of described barrier (41) is the arc surface along the rotation tangent direction arc transition of described rotor mechanism (2).
4. oil pump according to claim 1, it is characterized in that, also comprise the current limliting wall that is arranged in the 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.
5. oil pump according to claim 4, it is characterized in that, described housing comprises oil pump casing section (15) and the oil pump cover (16) that cooperates with described oil pump casing section (15), and described filler opening (161) and oil outlet (162) are arranged on the described oil pump cover (16);
Described current limliting wall comprises the oil pump cover current limliting wall (422) that is arranged on the oil pump cover (16), and is arranged on the oil pump casing section current limliting wall (423) in the oil pump casing section (15);
Be provided with the pressure release oil buffer cavity through hole (421) that connection described pressure release oil outflow buffer cavity (141) and pressure release oil enter buffer cavity (412) on the described oil pump cover current limliting wall (422).
6. oil pump according to claim 4, it is characterized in that, described pressure release oil flows out also to be provided with in the buffer cavity (141) and changes the pressure relief opening that pressure release oil flows to, and described pressure relief opening comprises symmetrically arranged the first pressure relief opening (1411) and the second pressure relief opening (1412).
7. oil pump according to claim 6 is characterized in that, the section shape of described the first pressure relief opening (1411) and the second pressure relief opening (1412) is right-angled trapezium, and an end of described the first pressure relief opening (1411) is provided with opening.
8. oil pump according to claim 1 is characterized in that, also comprises cooperating being installed between high-voltage oil cavity (13) and the low pressure oil pocket (12) the partitioning wall of keeping apart between high-voltage oil cavity (13) and the low pressure oil pocket (12).
9. oil pump according to claim 8 is characterized in that, described partitioning wall comprises the main part that is arranged on oil outlet (162) edge, and the extension part that is extended to form to the rotor assembly department by described main part.
10. oil pump according to claim 9 is characterized in that, described extension part is towards the lopsidedness setting of high-voltage oil cavity (13).
11. oil pump according to claim 8 is characterized in that, is provided with the partitioning wall bolt hole on the described partitioning wall, described partitioning wall bolt hole is arranged on the end near described rotor assembly department (11).
12. oil pump according to claim 11 is characterized in that, the width of described partitioning wall is 1.5 times to 2 times of partitioning wall bolt hole maximum diameter of hole.
13. an engine front cover lid is characterized in that described engine front cover covers and is integrally formed with each described oil pump such as claim 1-12.
14. a motor is characterized in that, described motor is provided with engine front cover lid as claimed in claim 13.
CN201210087056.6A 2012-03-29 2012-03-29 A kind of oil pump, engine front cover lid and motor CN103363278B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210087056.6A CN103363278B (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
CN201210087056.6A CN103363278B (en) 2012-03-29 2012-03-29 A kind of oil pump, engine front cover lid and motor
EP13769797.5A EP2831487B1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
PCT/CN2013/073368 WO2013143483A1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
US14/380,056 US9752472B2 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same

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CN103363278A true CN103363278A (en) 2013-10-23
CN103363278B CN103363278B (en) 2015-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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