CN104180144A - Oil pump assembly of engine - Google Patents
Oil pump assembly of engine Download PDFInfo
- Publication number
- CN104180144A CN104180144A CN201410394388.8A CN201410394388A CN104180144A CN 104180144 A CN104180144 A CN 104180144A CN 201410394388 A CN201410394388 A CN 201410394388A CN 104180144 A CN104180144 A CN 104180144A
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- Prior art keywords
- idle gear
- oil pump
- gear
- pump
- pump housing
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses an oil pump assembly of an engine. The oil pump assembly comprises an oil pump, wherein the oil pump comprises a pump body, an inner rotor, an outer rotor, a driving shaft, a driving gear and an idle gear assembly, wherein an opening of one end of the pump body is formed in the mounting part of a cylinder block and is mounted on the cylinder block through the mounting part, so that the opening, as well as the inner rotor and the outer rotor arranged in the pump body form an oil pressure cavity; the idle gear assembly comprises an idle gear and an idle gear shaft; the idle gear is mounted on the pump body through the idle gear shaft and is meshed with the driving gear for transmission. According to the invention, the idle gear for transmission is mounted on the pump body of the oil pump, so that the manufacturing tolerance accumulation is reduced, the center distance and the gear backlash between the idle gear and the driving gear are within the allowed range, and the gear meshing noise is reduced.
Description
Technical field
The present invention relates to engine art, particularly a kind of oil pump assembly of motor.
Background technique
At present, the structure that the oil pump of engine lubrication system generally adopts is by the pump housing, end cap, internal rotor, external rotor, bent axle, and live axle, actuation gear form, and the pump housing, end cap, internal rotor and external rotor form engine oil pressure chamber.The actuation gear of oil pump is driven by crankshaft gear, owing to being subject to spatial structure restriction, conventionally needs an idle gear to carry out transmission between crankshaft gear and Oil pump drive gear, and this idle gear and oil pump form oil pump assembly.
For the idle gear of transmission, be arranged on the cylinder block of motor, rather than be arranged on equally on the pump housing of oil pump with the actuation gear of oil pump, therefore, accumulative total due to manufacturing tolerances, there is overproof situation in the distance between the actuation gear center of idle gear center and oil pump, cause backlash to strengthen, finally cause the rotational noise of oil pump to strengthen.
The information that is disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply that in any form this information structure has been the known prior art of persons skilled in the art.
Summary of the invention
The object of the present invention is to provide a kind of oil pump assembly of simple and reasonable motor, the oil pump assembly of this motor is by being arranged on the idle gear for transmission the pump housing of oil pump, reduced the accumulative total of manufacturing tolerances, the centre distance of assurance idle gear and actuation gear and backlash, in allowed band, have reduced gear tooth noise.In addition, the oil pump of this motor has been cancelled end cap, and directly the pump housing (the end cap end of the pump housing) by oil pump is arranged in cylinder block, has simplified mounting arrangements mode, has reduced the cost of oil pump, has reduced the thickness of oil pump.
For achieving the above object, the invention provides the oil pump assembly of motor, comprise: oil pump, it comprises: the pump housing, internal rotor, external rotor, live axle and actuation gear, one end opening of the described pump housing forms the assembly department with cylinder block, and be arranged in cylinder block by this assembly department, thereby form engine oil pressure chamber with the internal rotor, the external rotor that are laid in described pump body; And idle gear assembly, it comprises: idle gear and idle gear shaft, described idle gear is installed on the described pump housing by idle gear shaft, and with described actuation gear engagement driving.
Preferably, in technique scheme, external rotor is laid in the inner chamber of the pump housing, and described internal rotor is laid in external rotor; One end of described live axle is fixed on internal rotor, and the other end stretches out the pump housing and is connected with actuation gear.
Preferably, in technique scheme, on one end of the pump housing and the assembly department of cylinder block, be also provided with locating stud, oil pump integral installation in cylinder block time, positions by live axle and locating stud.
Preferably, in technique scheme, the side of the pump housing extends outward idle gear assembly department, and one end of idle gear shaft is fixedly mounted in this idle gear assembly department, and idle gear is fixedly mounted on the other end of idle gear shaft.
Compared with prior art, the present invention has following beneficial effect: the oil pump assembly of this motor is by being arranged on the idle gear for transmission the pump housing of oil pump, reduced the accumulative total of manufacturing tolerances, the centre distance of assurance idle gear and actuation gear and backlash, in allowed band, have reduced gear tooth noise.In addition, the oil pump of this motor has been cancelled end cap, and directly the pump housing (the end cap end of the pump housing) by oil pump is arranged in cylinder block, has simplified mounting arrangements mode, has reduced the cost of oil pump, has reduced the thickness of oil pump.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of the oil pump assembly of motor of the present invention.
Fig. 2 is the back angle perspective view of the oil pump assembly of motor of the present invention.
Fig. 3 is the front visual angle perspective view of the oil pump assembly of motor of the present invention.
Description of reference numerals:
The 11-pump housing, 12-internal rotor, 13-external rotor, 14-live axle, 15-actuation gear, 16-locating stud, 21-idle gear, 22-idle gear shaft, 23-idle gear assembly department.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.
Unless separately there is other clearly to represent, otherwise in whole specification and claims, term " comprises " or its conversion was stated being understood to include as " comprising " or " including " etc. element or constituent element, and do not get rid of other element or other constituent element.
As shown in Figure 1 to Figure 3, according to the concrete structure of the oil pump assembly of the motor of the specific embodiment of the invention, comprise: oil pump, and for the idle gear assembly of transmission between crankshaft gear and the actuation gear of oil pump, wherein, the idle gear of idle gear assembly is arranged on the pump housing of oil pump, reduced the accumulative total of manufacturing tolerances, the centre distance of assurance idle gear and actuation gear and backlash, in allowed band, have reduced gear tooth noise.
Wherein, as shown in Figure 1, oil pump comprises: the pump housing 11, internal rotor 12, external rotor 13, live axle 14 and actuation gear 15, the pump housing 11 one end (former end cap end) opening forms the assembly department with cylinder block, and by this assembly department, be arranged in cylinder block, thereby be laid in inner internal rotor 12, external rotor 13 and form engine oil pressure chambeies.This oil pump is arranged in cylinder block, has simplified mounting arrangements mode, has reduced the cost of oil pump, has reduced the thickness of oil pump.External rotor 13 is laid in the inner chamber of the pump housing 11, and internal rotor 12 is laid in external rotor 13; One end of live axle 14 is fixed on internal rotor 12, and the other end stretches out the pump housing 11 and is connected with actuation gear 15.Crankshaft gear is by the actuation gear 15 of idle gear Component driver oil pump, and actuation gear 15 drives internal rotor 12 and external rotor 13 to rotate by live axle 14.On the assembly department of the pump housing 11 one end and cylinder block, be also provided with locating stud 16, oil pump integral installation in cylinder block time, positions by live axle 14 and locating stud 16.
In lubrication system, the effect of oil pump is that machine oil is brought up to after certain pressure, is sent to forcibly on the moving surface of each part of motor.Oil pump simple in structure, volume is little, lightweight, and oil transportation amount is large.Cycloid rotor pump system adopts the structure of inner and outer rotors engagement, and the number of teeth is few, and physical dimension is compact, by other isolated components, just can not form Seal cage, and its number of spare parts is few.The movement characteristic of oil pump is smooth running, and noise is little.The cycloid rotor pump inner and outer rotors number of teeth only differs from a tooth, and when they do relative motion, flank of tooth Sliding velocity is little, and contact points moves in the flank profil along inner and outer rotors constantly, and therefore, the mutual wearing and tearing of the two rotor flank of tooth are little.Because the envelope angle of oil sucting cavity and oil-discharging cavity is large, approach 145 °, oil suction and oil extraction time are all more abundant, and therefore, oil stream is more steady, move also more steady, and noise is starkly lower than gear pump.Oil pump also has the feature that high speed characteristics is good.For general involute gear pump, if rotating speed is too high, the effect because of centrifugal force will cause oil-filled not enough form " hole " of tooth paddy, makes the decrease in efficiency of pump, and therefore, its rotating speed seldom surpasses 3000rpm, and peripheral velocity is in 5～6m/s.For cycloid rotor pump, suction oil angular range is large, and when High Rotation Speed, the effect of centrifugal force is conducive to the filling of fluid in tooth paddy, can not produce harmful " hole " phenomenon, and therefore, the speed range of cycloid rotor pump can turn to nearly ten thousand at hundreds of.
As shown in Figures 2 and 3, idle gear assembly comprises: idle gear 21 and idle gear shaft 22, the side of the pump housing 11 extends outward idle gear assembly department 23, one end of idle gear shaft 22 is fixedly mounted in this idle gear assembly department 23, idle gear 21 is fixedly mounted on the other end of idle gear shaft 22, and idle gear 21 is installed on the pump housing 11 by idle gear shaft 22, and with actuation gear 15 engagement driving, crankshaft gear drives idle gear 21 to rotate, and idle gear 21 drives actuation gear 15 to rotate again.Idle gear is directly installed on the pump housing of oil pump, has reduced the accumulative total with the Oil pump drive gear manufacturing tolerances of its engagement driving, guarantees that the centre distance of idle gear and actuation gear and backlash, in allowed band, have reduced gear tooth noise.
During engine operation, crankshaft gear drives idle gear 21 to rotate, idle gear 12 is arranged on idle gear shaft 22, idle gear 21 drives actuation gear 15 to rotate, live axle is fixed on internal rotor 12, and internal rotor 12 drives external rotor 13 to rotate, when oil pump is moved, the pump housing 11, external rotor 13, internal rotor 12 and cylinder block mineralization pressure chamber, the position that oil delivery is needed to each.
To sum up, the oil pump assembly of this motor is by being arranged on the idle gear for transmission the pump housing of oil pump, reduced the accumulative total of manufacturing tolerances, the centre distance of assurance idle gear and actuation gear and backlash, in allowed band, have reduced gear tooth noise.In addition, the oil pump of this motor has been cancelled end cap, and directly the pump housing (the end cap end of the pump housing) by oil pump is arranged in cylinder block, has simplified mounting arrangements mode, has reduced the cost of oil pump, has reduced the thickness of oil pump.
The aforementioned description to concrete exemplary of the present invention is for the object with illustration is described.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.Exemplary embodiment is selected and the object described is to explain certain principles of the present invention and practical application thereof, thereby made those skilled in the art can realize and utilize various exemplary of the present invention and various selection and change.Scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (4)
1. an oil pump assembly for motor, is characterized in that, comprising:
Oil pump, it comprises: the pump housing, internal rotor, external rotor, live axle and actuation gear, one end opening of the described pump housing forms assembly department, and the described pump housing is arranged in cylinder block by this assembly department, thereby this pump housing forms engine oil pressure chamber with the internal rotor, the external rotor that are laid in described pump body; And
Idle gear assembly, it comprises: idle gear and idle gear shaft, described idle gear is installed on the described pump housing by idle gear shaft, and with described actuation gear engagement driving.
2. the oil pump assembly of motor according to claim 1, is characterized in that, described external rotor is laid in the inner chamber of the pump housing, and described internal rotor is laid in external rotor; One end of described live axle is fixed on internal rotor, and the other end of this live axle stretches out the pump housing and is connected with actuation gear.
3. the oil pump assembly of motor according to claim 1, it is characterized in that, on the assembly department of one end of the described pump housing, be also provided with locating stud, when oil pump integral installation is in described cylinder block, this oil pump positions by described live axle and locating stud.
4. according to the oil pump assembly of the motor described in any one in claims 1 to 3, it is characterized in that, the side of the described pump housing extends outward idle gear assembly department, one end of described idle gear shaft is fixedly mounted in this idle gear assembly department, and described idle gear is fixedly mounted on the other end of idle gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394388.8A CN104180144A (en) | 2014-08-12 | 2014-08-12 | Oil pump assembly of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394388.8A CN104180144A (en) | 2014-08-12 | 2014-08-12 | Oil pump assembly of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104180144A true CN104180144A (en) | 2014-12-03 |
Family
ID=51961384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410394388.8A Pending CN104180144A (en) | 2014-08-12 | 2014-08-12 | Oil pump assembly of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104180144A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272677A1 (en) * | 1986-12-23 | 1988-06-29 | FIAT AUTO S.p.A. | Internal combustion engine |
| EP0457489A1 (en) * | 1990-05-12 | 1991-11-21 | Concentric Pumps Limited | I.C. engines |
| CN201582105U (en) * | 2009-11-25 | 2010-09-15 | 湖南机油泵股份有限公司 | Gear type oil pump with annular oil guide slot |
| CN201615330U (en) * | 2010-02-24 | 2010-10-27 | 曹科定 | Improved motorcycle oil pump |
| CN102003244A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Three-helical gear oil pump |
| CN202074214U (en) * | 2011-05-06 | 2011-12-14 | 湖南机油泵股份有限公司 | Lubricating oil pump with adjustable idle gear |
| CN202392418U (en) * | 2011-12-22 | 2012-08-22 | 湖南机油泵股份有限公司 | Rotor type short shaft sleeve oil pump provided with circulating lubrication oil groove |
| CN202521203U (en) * | 2012-04-16 | 2012-11-07 | 滁州市庆福机电制造有限公司 | Oil pump and diesel engine with oil pump |
| CN203189999U (en) * | 2013-04-22 | 2013-09-11 | 浙江三工汽车零部件有限公司 | Oil pump |
| CN203231064U (en) * | 2013-04-17 | 2013-10-09 | 浙江三工汽车零部件有限公司 | Oil pump with dust shield |
| CN203296849U (en) * | 2013-05-24 | 2013-11-20 | 宁波中皇机电有限公司 | Oil pump positioning structure |
| CN103574254A (en) * | 2013-10-17 | 2014-02-12 | 湖南机油泵股份有限公司 | Planar type pressure-limiting valve oil pump |
| CN204153438U (en) * | 2014-08-12 | 2015-02-11 | 广西玉柴机器股份有限公司 | The oil pump assembly of motor |
-
2014
- 2014-08-12 CN CN201410394388.8A patent/CN104180144A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272677A1 (en) * | 1986-12-23 | 1988-06-29 | FIAT AUTO S.p.A. | Internal combustion engine |
| EP0457489A1 (en) * | 1990-05-12 | 1991-11-21 | Concentric Pumps Limited | I.C. engines |
| CN201582105U (en) * | 2009-11-25 | 2010-09-15 | 湖南机油泵股份有限公司 | Gear type oil pump with annular oil guide slot |
| CN201615330U (en) * | 2010-02-24 | 2010-10-27 | 曹科定 | Improved motorcycle oil pump |
| CN102003244A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Three-helical gear oil pump |
| CN202074214U (en) * | 2011-05-06 | 2011-12-14 | 湖南机油泵股份有限公司 | Lubricating oil pump with adjustable idle gear |
| CN202392418U (en) * | 2011-12-22 | 2012-08-22 | 湖南机油泵股份有限公司 | Rotor type short shaft sleeve oil pump provided with circulating lubrication oil groove |
| CN202521203U (en) * | 2012-04-16 | 2012-11-07 | 滁州市庆福机电制造有限公司 | Oil pump and diesel engine with oil pump |
| CN203231064U (en) * | 2013-04-17 | 2013-10-09 | 浙江三工汽车零部件有限公司 | Oil pump with dust shield |
| CN203189999U (en) * | 2013-04-22 | 2013-09-11 | 浙江三工汽车零部件有限公司 | Oil pump |
| CN203296849U (en) * | 2013-05-24 | 2013-11-20 | 宁波中皇机电有限公司 | Oil pump positioning structure |
| CN103574254A (en) * | 2013-10-17 | 2014-02-12 | 湖南机油泵股份有限公司 | Planar type pressure-limiting valve oil pump |
| CN204153438U (en) * | 2014-08-12 | 2015-02-11 | 广西玉柴机器股份有限公司 | The oil pump assembly of motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
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| WD01 | Invention patent application deemed withdrawn after publication |