CN202546203U - Fuel pump, engine front shroud and engine - Google Patents

Fuel pump, engine front shroud and engine Download PDF

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Publication number
CN202546203U
CN202546203U CN2012201241355U CN201220124135U CN202546203U CN 202546203 U CN202546203 U CN 202546203U CN 2012201241355 U CN2012201241355 U CN 2012201241355U CN 201220124135 U CN201220124135 U CN 201220124135U CN 202546203 U CN202546203 U CN 202546203U
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CN
China
Prior art keywords
oil
partitioning
oil pump
pressure
cavity
Prior art date
Application number
CN2012201241355U
Other languages
Chinese (zh)
Inventor
郑俊丽
刘静
李海彬
林晋琛
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to CN2012201241355U priority Critical patent/CN202546203U/en
Application granted granted Critical
Publication of CN202546203U publication Critical patent/CN202546203U/en
Priority claimed from US14/380,053 external-priority patent/US9512837B2/en

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Abstract

The utility model discloses a fuel pump. The fuel pump is provided with a dividing wall arranged between a high-pressure oil chamber (13) and a low-pressure oil chamber (12) in the manner of matching; a decompression oil cushion chamber (14), a flow-limiting wall and a stopping wall (41) are arranged between the dividing wall and the low-pressure oil chamber (12); the decompression oil cushion chamber (14) is divided into a decompression oil outflow cushion chamber (141) and a decompression oil inflow cushion chamber (142) by the flow-limiting wall; a rotor mounting part (11) is arranged at one end side of the fuel pump; and the high-pressure oil chamber (13), the low-pressure oil chamber (12) and the decompression oil cushion chamber (14) are arranged at the same side of the periphery of the rotor mounting part (11). The oil pumping efficiency of the fuel pump can be increased, and moreover, the fuel pump is compact in structure. The utility model also provides an integrally arranged engine front shroud of the fuel pump and an engine applying the engine front shroud.

Description

A kind of oil pump, engine front cover lid and motor
Technical field
The utility model relates to auto parts and components, and 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 (like rotor shaft and main bearing, piston and cylinder wall, timing gear secondary or the like).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 possibly cause part time job surface scaling loss, causes motor to turn round.Therefore, for guaranteeing the motor proper functioning, must lubricate relative motion surface; Just on friction surface, cover one deck lubricant oil (machine oil); Make the thin oil film of alternating floor between the metal surface,, reduce power loss to reduce surface friction drag; Alleviate component wear, prolong motor working life.
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 rotor shaft main bearing, connecting rod bearing and camshaft bearing etc. are located to bear are bigger, need with 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 a rotor pump, and rotor pump comprises internal rotor, external rotor, housing; Internal rotor and external rotor be eccentric the 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 through 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 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 oil pump of existing technology is because of the structural limitations of itself, and when work, 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.Again, high-voltage oil cavity is higher because of the pressure of itself, can cause the high-voltage oil cavity pressure loss to low pressure oil pocket oil impregnate, has further reduced pump oil efficient.In addition, the low pressure oil pocket of oil pump and high-voltage oil cavity are positioned at the relative both sides of rotor mechanism, and it is compact that structure is owed, and makes the volume of oil pump become bigger, and it is big to take up room.
The model utility content
The utility model is owed compact technical problem for solving the low and structure of above-mentioned oil pump pump oil efficient, and a kind of oil pump is provided, and this oil pump can improve pump oil efficient and compact structure.
The oil pump of the utility model; The rotor assembly department that comprises housing, rotor mechanism, the said rotor mechanism of installation, said rotor assembly department is provided with the rotor holder structure, and said housing is provided with and supplies machine oil filler opening that flows into and the oil outlet that supplies machine oil to flow out; 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, and said low pressure oil pocket comprises low pressure oil-feed main oil gallery; Said high-voltage oil cavity comprises the fuel-displaced main oil gallery of high pressure, and said oil pump is provided with to cooperate and is installed between high-voltage oil cavity and the low pressure oil pocket the partitioning wall of keeping apart between high-voltage oil cavity and the low pressure oil pocket; Be provided with pressure release oil buffer cavity and current limliting wall between said partitioning wall and the low pressure oil pocket; Said current limliting wall comprises the current limliting wall that is arranged between said low pressure oil pocket and the pressure release oil buffer cavity, and said pressure release oil buffer cavity is separated into pressure release oil outflow buffer cavity and the oily current limliting wall that gets into buffer cavity of pressure release; Said pressure release oil flows out buffer cavity and pressure release oil entering buffer cavity is connected; Said rotor assembly department is arranged at the distolateral of oil pump, and said 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, said current limliting wall extends to the bottom of rotor holder structure to rotor holder structure direction from the bottom of pressure release oil outflow buffer cavity.
Further, said current limliting wall is provided with and is communicated with the pressure release oil buffer cavity through hole that said pressure release oil flows out buffer cavity and pressure release oil entering buffer cavity.
Further, said current limliting wall is arranged at a side of said filler opening, and parallel with the inflow direction of machine oil.
Further, the top end face of said barrier is the arc surface along the rotation tangent direction arc transition of said rotor mechanism.
Further, said 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 said main part.
Further, said extension part is towards the lopsidedness setting of high-voltage oil cavity.
Further, said housing comprises oil pump housing section and the oil pump cover that cooperates with said oil pump housing section, and said filler opening and oil outlet are arranged on the said oil pump cover; Said barrier comprises the oil pump cover barrier that is arranged on the oil pump cover, and is arranged on the oil pump housing section barrier on the oil pump housing section; Said partitioning wall comprises first partitioning wall that is arranged on the oil pump cover, and corresponding is arranged on second partitioning wall on the oil pump housing section, and said first partitioning wall and said second partitioning wall closely cooperate.
Further, said first partitioning wall has the first level and smooth isolation surface, and said second partitioning wall has the second level and smooth isolation surface that cooperates with first isolation surface.
Further; Said first partitioning wall and second partitioning wall are provided with the partitioning wall bolt hole that matches; Said partitioning wall bolt hole is arranged on the end near said rotor assembly department; Said partitioning wall bolt hole comprises the first partitioning wall bolt hole that is arranged on first partitioning wall, and is arranged on the second partitioning wall bolt hole on second partitioning wall.
Further, the width of said partitioning wall is 1.5 times to 2 times of partitioning wall bolt hole maximum diameter of hole.
Further, said pressure release oil flows out also to be provided with in the buffer cavity and changes the pressure relief opening that pressure release oil flows to, and said pressure relief opening comprises first pressure relief opening and second pressure relief opening.
Further, the section shape of said first pressure relief opening and second pressure relief opening is a right-angled trapezium, and an end of said first pressure relief opening is provided with opening.
The utility model also provides a kind of engine front cover lid, and said engine front cover covers and is wholely set above-mentioned oil pump.
The utility model also provides a kind of motor of having used above-mentioned engine front cover lid.
The utility model prevents that through the partitioning wall of between being provided with high-voltage oil cavity and low pressure oil pocket between high-voltage oil cavity and the low pressure oil pocket, keeping apart the oil of high-voltage oil cavity from oozing out toward the low pressure oil pocket, reduces the pressure loss of high-voltage oil cavity, improves the efficient of pump oil.Through pressure release oil buffer cavity is set between said low pressure oil pocket and high-voltage oil cavity; Change the flow direction of pressure release oil and pressure and the flow velocity that reduces pressure release oil; Make pressure release oil flow more stable; Also make the oily stable back of pressure release get into oil pump oil-feed main oil gallery smoothly, prevent that the oily low pressure oil of impacting the filler opening inflow of pressure release from producing unnecessary eddy current, and then improve the oily efficient of pump along barrier through barrier is set between said low pressure oil pocket and pressure release oil buffer cavity.Through with said high-voltage oil cavity and low pressure oil pocket and pressure release oil buffer setting same side in the rotor mechanism periphery, make the more compact structure of oil pump, it is littler to take up room, and helps oil pump and the miniaturization of the motor that is installed together with oil pump.
Description of drawings
Fig. 1 is the front view of the utility model embodiment's oil pump cover, and among the figure shown in the arrow is the flow direction of machine oil.
Fig. 2 is the front view of the utility model embodiment's oil pump housing section.
Fig. 3 is the stereogram of the utility model embodiment's oil pump cover.
Fig. 4 is that the utility model embodiment's engine front cover lid is installed decomposing schematic representation.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Extremely shown in Figure 4 like Fig. 1; It is a kind of oil pump of the utility model embodiment; Said oil pump comprises housing, rotor mechanism 2, is arranged on the rotor assembly department 11 that said rotor mechanism 2 is installed on the housing, and said rotor assembly department 11 is provided with rotor holder structure 111, and said housing is provided with and supplies machine oil filler opening 161 that flows into and the oil outlet 162 that supplies machine oil to flow out; 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, and high-voltage oil cavity 13 is communicated with oil outlet 162, and said low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121; Said high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, and said 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, current limliting wall and barrier 41 between said partitioning wall and the low pressure oil pocket 12; Said current limliting wall is arranged in the said pressure release oil buffer cavity 14; Said current limliting wall is separated into pressure release oil with pressure release oil buffer cavity 14 and flows out buffer cavity 141 and the oily buffer cavity 142 that gets into of pressure release; Said pressure release oil flows out buffer cavity 141 and is interconnected with pressure release oil entering buffer cavity 142; Said barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and the low pressure oil pocket 12; Said rotor assembly department 11 is arranged at the distolateral of oil pump, and said 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, promptly away from a side of said rotor assembly department 11.Said housing comprises oil pump housing section 15 and the oil pump cover 16 that cooperates with said oil pump housing section 15, and said filler opening 161 is arranged on the said oil pump cover 16 with oil outlet 162.
The utility model prevents that through the partitioning wall of between being provided with high-voltage oil cavity and low pressure oil pocket between high-voltage oil cavity and the low pressure oil pocket, keeping apart the oil of high-voltage oil cavity from oozing out toward the low pressure oil pocket, reduces the pressure loss of high-voltage oil cavity, improves the efficient of pump oil.Through pressure release oil buffer cavity is set between said low pressure oil pocket and high-voltage oil cavity; Change the flow direction of pressure release oil and pressure and the flow velocity that reduces pressure release oil; Make pressure release oil flow more stable; Also make the oily stable back of pressure release get into oil pump oil-feed main oil gallery smoothly, prevent that the oily low pressure oil of impacting the filler opening inflow of pressure release from producing unnecessary eddy current, and then improve the oily efficient of pump along barrier through barrier is set between said low pressure oil pocket and pressure release oil buffer cavity.Through with said high-voltage oil cavity and low pressure oil pocket and pressure release oil buffer setting same side in the rotor mechanism periphery, make the more compact structure of oil pump, it is littler to take up room, and helps oil pump and the miniaturization of the motor that is installed together with oil pump.
The bottom the other end that said current limliting wall one end connects rotor holder structure 111 connects partitioning wall.Said rotor holder structure 111, current limliting wall, partitioning wall form pressure release oil jointly and get into buffer cavity 142.Said current limliting wall, partitioning wall, the barrier 41 common pressure release oil that form flow out buffer cavity 141.Said current limliting wall is provided with and is communicated with said pressure release oil outflow buffer cavity 141 and the oily pressure release oil buffer cavity through hole 421 that gets into buffer cavity 142 of pressure release.
The machine oil flow velocity that from filler opening 16, flows into because of pressure release oil pressure ratio is big; 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 the impact force of said pressure release oil to machine oil in the low pressure oil-feed main oil gallery 121, reduce eddy current, improve pump oil efficient, said barrier 41 is arranged at a side of said filler opening 161, and parallel with the inflow direction of machine oil.For pressure release machine oil is flowed along the rotor rotation tangent direction, improve pump oil efficient, the top end face of said barrier 41 is the arc surface along the rotation tangent direction arc transition of said rotor mechanism 2.
Said low pressure oil-feed main oil gallery 121 is arranged on the oil pump cover 16 with the fuel-displaced main oil gallery 131 of high pressure.Said 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 housing section current limliting wall 423 on the oil pump housing section 15; Said pressure release oil buffer cavity through hole 421 is arranged on the oil pump cover current limliting wall 422.
Said partitioning wall comprises first partitioning wall 31 that is arranged on the oil pump cover 16, and corresponding is arranged on second partitioning wall 32 on the oil pump housing section 15, and said first partitioning wall 31 closely cooperates with said second partitioning wall 32.Said first partitioning wall 31 comprises first main part 311 that is arranged on oil outlet 162 edges, and first extension part 312 that is extended to form to rotor assembly department 11 by said first main part 311.Said second partitioning wall 32 comprises second main part 321 that is arranged on oil outlet 162 edges, and second extension part 322 that is extended to form to rotor assembly department 11 by said second main part 321.
Preferably, said first extension part 312 and 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 first partitioning wall 31 and second partitioning wall 32 are fitted, the first level and smooth isolation surface 313 of said first partitioning wall 31, said second partitioning wall 32 has the second level and smooth isolation surface 323 that cooperates with first isolation surface 313.
In order to increase the impacting force between first partitioning wall 31 and second partitioning wall 32; Further prevent oil impregnate; Said first partitioning wall 31 and second partitioning wall 32 are provided with the partitioning wall bolt hole that matches; Said partitioning wall bolt hole is arranged on the end near said rotor assembly department 11, and said partitioning wall bolt hole comprises the first partitioning wall bolt hole 314 that is arranged on first partitioning wall 31, and is arranged on the second partitioning wall bolt hole 324 on second partitioning wall 32.More even in order to make said first partitioning wall 31 and second partitioning wall 32 receive impacting force, can a plurality of bolts hole be set at diverse location around oil outlet 162, more help realizing the isolation completely of low pressure oil pocket 12 and high-voltage oil cavity 13, prevent the oil impregnate phenomenon.
The width of said 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.Said 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 the side near rotor assembly department 11, makes the global stability of oil pump better like this.
Preferably; Said 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 said pressure relief opening is arranged on the oil pump cover 16, and said pressure release oil flows out in the buffer cavity 141 and is provided with decompression mechanism 6; Said decompression mechanism 6 comprises pressure-limit valve 61; Limiting valve spring mechanism 62 and spring seat 63, pressure relief opening guarantees that decompression mechanism 6 in axial direction moves when draining smooth and easy, not clamping stagnation.
Said pressure relief opening is symmetricly set on the both sides of decompression mechanism 6; Said pressure relief opening comprises first pressure relief opening 1411 and second pressure relief opening 1412; Said first pressure relief opening 1411 and second pressure relief opening 1412 are symmetrical set with respect to the center line of said pressure release oil buffer cavity through hole 421; In the present embodiment, the section shape of said first pressure relief opening 1411 and second pressure relief opening 1412 is a right-angled trapezium, and an end of said first pressure relief opening 1411 is provided with opening.The section shape of said first pressure relief opening 1411 and 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, said rotor mechanism 2 comprise internal rotor 21, with the external rotor 22 that said internal rotor 21 cooperates, internal rotor 21 is fixed on the rotor shaft; Said internal rotor 21 is driven by rotor shaft; As shown in Figure 4, said internal rotor 21 is provided with flat department 211 with the inner ring of rotor shaft assembling, and said internal rotor is fixed on the rotor shaft through key or pin; Said 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 rotations, drive external rotor 22 rotations.Internal rotor 214 has 7 double wedges, and external rotor 22 has 8 recessed teeth, like this; 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 big; And fuel feeding is even, and noise is little, and oil suction degree of vacuum is high; Guaranteeing that machine oil circulates in lubrication system, when the rotor tooth form profile design must make rotor forward any angle to, total energy formed mutually and contacts 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 disengage from; Volume increases gradually, produces vacuum, and machine oil is inhaled into; Rotor mechanism 2 continues rotation, and the machine oil quilt is a side of oil outlet 162 by the time, at this time; Rotor just in time gets into engagement, and oil pressure is raise, and machine oil is extruded between cog; Enter into high-voltage oil cavity 13 respectively and get into buffer cavity 142 with pressure release oil, the machine oil that enters into high-voltage oil cavity 13 flows out through oil outlet 162, flows out in the buffer cavity 141 at pressure release oil to be provided with decompression mechanism 6; Said decompression mechanism 6 comprises pressure-limit valve 61, and limiting valve spring mechanism 62 and spring seat 63 are if the pressure of machine oil is excessive; Then oil pressure is opened pressure-limit valve 61, and part machine oil gets into buffer cavity 142 from pressure release oil and flows out to pressure release oil outflow buffer cavity 141, and said pressure release oil gets into 141 pairs of pressure releases oil of buffer cavity 142 and pressure release oil outflow buffer cavity and forms double buffering; Change the flow direction of pressure release oil and pressure and the flow velocity that reduces pressure release oil, the pressure release oil that enters into pressure release oil outflow buffer cavity 141 further changes the flow direction of pressure release oil again through pressure relief opening, make pressure release oil flow more stable; When said pressure release oil passes through the runner between barrier 41 and the current limliting wall; 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 gets into 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, make and 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 utility model also provides a kind of engine front cover lid of having used the said engine oil pump, and said engine front cover covers and is wholely set above-mentioned oil pump.As shown in Figure 4; Be the assembling schematic representation of the utility model embodiment's engine front cover lid, said engine front cover lid comprises front cover body 5, the organic oil pump of integrated setting on the said front cover body 5; Particularly; Said oil pump comprises housing, rotor mechanism 2, is arranged on the rotor assembly department 11 that said rotor mechanism 2 is installed on the housing, and said rotor assembly department 11 is provided with rotor holder structure 111, and said housing is provided with and supplies machine oil filler opening 161 that flows into and the oil outlet 162 that supplies machine oil to flow out; 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, and high-voltage oil cavity 13 is communicated with oil outlet 162, and said low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121; Said high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, and said 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, current limliting wall and barrier 41 between said partitioning wall and the low pressure oil pocket 12; Said current limliting wall is arranged in the said pressure release oil buffer cavity 14; Said current limliting wall is separated into pressure release oil with pressure release oil buffer cavity 14 and flows out buffer cavity 141 and the oily buffer cavity 142 that gets into of pressure release; Said pressure release oil flows out buffer cavity 141 and is interconnected with pressure release oil entering buffer cavity 142; Said barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and the low pressure oil pocket 12; Said rotor assembly department 11 is arranged at the distolateral of oil pump, and said 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, promptly away from a side of said rotor assembly department 11.
The utility model embodiment's engine front cover lid and said oil pump integrated setting help simplifying the structure of motor, and make things convenient for the maintenance dismounting of oil pump.
The utility model embodiment also provides a kind of motor of having used above-mentioned engine front cover lid; Said motor comprises cylinder cap; Be connected in the cylinder body of cylinder cap bottom and be installed in cylinder cap and the engine front cover of cylinder body front end lid, said cylinder base connects oil sump.Said engine front cover covers integrated setting has above-mentioned oil pump; Said engine front cover lid comprises front cover body 5; The organic oil pump of integrated setting on the said front cover body 5, particularly, said oil pump comprises housing, rotor mechanism 2, is arranged on the rotor assembly department 11 that said rotor mechanism 2 is installed on the housing; Said rotor assembly department 11 is provided with rotor holder structure 111; Said housing is provided with and supplies machine oil filler opening 161 that flows into and the oil outlet 162 that supplies machine oil to flow out, and is provided with low pressure oil pocket 12 and high-voltage oil cavity 13 in the housing, and low pressure oil pocket 12 is communicated with filler opening 161; High-voltage oil cavity 13 is communicated with oil outlet 162; Said low pressure oil pocket 12 comprises low pressure oil-feed main oil gallery 121, and said high-voltage oil cavity 13 comprises the fuel-displaced main oil gallery 131 of high pressure, and said 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, current limliting wall and barrier 41 between said partitioning wall and the low pressure oil pocket 12; Said current limliting wall is arranged in the said pressure release oil buffer cavity 14; Said current limliting wall is separated into pressure release oil with pressure release oil buffer cavity 14 and flows out buffer cavity 141 and the oily buffer cavity 142 that gets into of pressure release; Said pressure release oil flows out buffer cavity 141 and is interconnected with pressure release oil entering buffer cavity 142; Said barrier 41 is arranged on pressure release oil and flows out between buffer cavity 141 and the low pressure oil pocket 12; Said rotor assembly department 11 is arranged at the distolateral of oil pump, and said 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, promptly away from a side of said rotor assembly department 11.Said housing comprises oil pump housing section 15 and the oil pump cover 16 that cooperates with said oil pump housing section 15, and said filler opening 161 is arranged on the said oil pump cover 16 with oil outlet 162.
The engine front cover lid and the said oil pump integrated setting of the utility model embodiment's motor help simplifying the structure of motor, and make things convenient for the maintenance dismounting of oil pump.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (15)

1. oil pump; Comprise housing, rotor mechanism (2), be arranged on the rotor assembly department (11) that said rotor mechanism (2) is installed on the housing; Said rotor assembly department (11) is provided with rotor holder structure (111); Said housing is provided with filler opening (161) that supplies the machine oil inflow and the oil outlet (162) that supplies machine oil to flow out; 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), and high-voltage oil cavity (13) is communicated with oil outlet (162); Said low pressure oil pocket (12) comprises low pressure oil-feed main oil gallery (121); Said high-voltage oil cavity comprises the fuel-displaced main oil gallery of high pressure (131), it is characterized in that, said oil pump is provided with to cooperate and is 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); Be provided with pressure release oil buffer cavity (14), current limliting wall and barrier (41) between said partitioning wall and the low pressure oil pocket (12); Said current limliting wall is arranged in the said pressure release oil buffer cavity (14); Said current limliting wall is separated into pressure release oil with pressure release oil buffer cavity (14) and flows out buffer cavity (141) and pressure release oil entering buffer cavity (142); Said pressure release oil flows out buffer cavity (141) and pressure release oil entering buffer cavity (142) is interconnected; Said barrier is arranged on pressure release oil and flows out between buffer cavity (141) and the low pressure oil pocket (12); Said rotor assembly department (11) is arranged at the distolateral of oil pump, and said 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.
2. oil pump according to claim 1 is characterized in that, said current limliting wall one end connects the bottom of rotor holder structure (111), and the other end connects partitioning wall.
3. oil pump according to claim 1 is characterized in that, said current limliting wall is provided with and is communicated with the pressure release oil buffer cavity through hole (421) that said pressure release oil flows out buffer cavity (141) and pressure release oil entering buffer cavity (412).
4. oil pump according to claim 1 is characterized in that, said barrier (41) is arranged at a side of said filler opening (161), and parallel with the inflow direction of machine oil.
5. oil pump according to claim 1 is characterized in that, the top end face of said barrier (41) is the arc surface along the rotation tangent direction arc transition of said rotor mechanism (2).
6. oil pump according to claim 1 is characterized in that, said 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 said main part.
7. oil pump according to claim 6 is characterized in that, said extension part is towards the lopsidedness setting of high-voltage oil cavity (13).
8. oil pump according to claim 1; It is characterized in that; Said housing comprises oil pump housing section (15) and the oil pump cover (16) that cooperates with said oil pump housing section (15), and said filler opening (161) and oil outlet (162) are arranged on the said oil pump cover (16);
Said 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 housing section current limliting wall (423) on the oil pump housing section (15);
Said partitioning wall comprises first partitioning wall (31) that is arranged on the oil pump cover (16); And correspondence is arranged on second partitioning wall (32) on the oil pump housing section (15), and said first partitioning wall (31) closely cooperates with said second partitioning wall (32).
9. oil pump according to claim 8; It is characterized in that; Said first partitioning wall (31) has level and smooth first isolation surface (313), and said second partitioning wall (32) has level and smooth second isolation surface (323) that cooperates with first isolation surface (313).
10. oil pump according to claim 8; It is characterized in that; Said first partitioning wall (31) and second partitioning wall (32) are provided with the partitioning wall bolt hole that matches; Said partitioning wall bolt hole is arranged on the end near said rotor assembly department (11), and said partitioning wall bolt hole comprises the first partitioning wall bolt hole (314) that is arranged on first partitioning wall (31), and is arranged on the second partitioning wall bolt hole (324) on second partitioning wall (32).
11. oil pump according to claim 10 is characterized in that, the width of said partitioning wall is 1.5 times to 2 times of partitioning wall bolt hole maximum diameter of hole.
12. oil pump according to claim 1; It is characterized in that; Said 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 said pressure relief opening comprises symmetrically arranged first pressure relief opening (1411) and second pressure relief opening (1412).
13. oil pump according to claim 1 is characterized in that, the section shape of said first pressure relief opening (1411) and second pressure relief opening (1412) is a right-angled trapezium, and an end of said first pressure relief opening (1411) is provided with opening.
14. an engine front cover lid is characterized in that said engine front cover covers and is integrally formed with each described oil pump like claim 1-13.
15. a motor is characterized in that, said motor is provided with engine front cover lid as claimed in claim 14.
CN2012201241355U 2012-03-29 2012-03-29 Fuel pump, engine front shroud and engine CN202546203U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201241355U CN202546203U (en) 2012-03-29 2012-03-29 Fuel pump, engine front shroud and engine

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2012201241355U CN202546203U (en) 2012-03-29 2012-03-29 Fuel pump, engine front shroud and engine
US14/380,053 US9512837B2 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
PCT/CN2013/073358 WO2013143479A1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same
EP13769950.0A EP2831488B1 (en) 2012-03-29 2013-03-28 Oil pump, engine cover and engine comprising the same

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013143476A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143483A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143479A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
CN103363276A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013143476A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143483A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143479A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
CN103363276A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
CN103363276B (en) * 2012-03-29 2016-04-27 比亚迪股份有限公司 A kind of oil pump, engine front cover lid and motor
US9512837B2 (en) 2012-03-29 2016-12-06 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
US9752472B2 (en) 2012-03-29 2017-09-05 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
US9869313B2 (en) 2012-03-29 2018-01-16 Shenzhen Byd Auto R&D Company Limtied Oil pump, engine cover and engine comprising the same
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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