CN103939173A - Oil pump for engine - Google Patents
Oil pump for engine Download PDFInfo
- Publication number
- CN103939173A CN103939173A CN201410147528.1A CN201410147528A CN103939173A CN 103939173 A CN103939173 A CN 103939173A CN 201410147528 A CN201410147528 A CN 201410147528A CN 103939173 A CN103939173 A CN 103939173A
- Authority
- CN
- China
- Prior art keywords
- oil
- engine
- pump
- oil pump
- engine cylinder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 75
- 239000010705 motor oil Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The invention provides an oil pump for an engine. According to the structure, the oil pump for the engine comprises a pump assembly, a pressure-limiting valve assembly, an oil inlet and an oil outlet, wherein the oil inlet and the oil outlet are communicated with an oil inlet channel and an oil outlet channel respectively. An oil feeding port of the pressure-limiting valve assembly is communicated with the oil outlet channel and an oil discharging port of the pressure-limiting valve assembly is communicated with the oil inlet channel. The oil inlet channel and the oil outlet channel are respectively formed in a cylinder wall of an engine cylinder block. The pump assembly is inserted into the portion between the oil inlet channel and the oil outlet channel. A gear cavity of the pump assembly is a cavity between the oil inlet channel and the oil outlet channel. An opening of the cavity extends to the surface of the engine cylinder block. The oil outlet channel is communicated with the bottom of the engine cylinder block. The pump assembly is installed in the cylinder wall of the engine cylinder block, so that a gear cavity does not need to be additionally formed outside the engine cylinder block, the weight of the whole engine is reduced, and the oil channel trend, sealing and fixing structures of the oil pump and the engine cylinder block are simplified when the common oil pump is arranged; meanwhile, because the gear cavity is integrated with the engine cylinder block, the noise problem and the oil leakage risk can be reduced.
Description
Technical field
The present invention relates to technical field of automobile engine, be specifically related to a kind of engine oil pump.
Background technique
In the design field of motor, engine oil pump is arranged and is mainly contained two kinds of forms at present: a kind of motor head that is mounted in is fixed on cylinder body, by bent axle, is directly driven; Another kind of form is to be arranged in oil sump, under oil pump, hangs on the cylinder body bottom surface of installing, and adopts independent chain system driving crank to drive.
The first structural type be arranged on motor head and be fixed on cylinder body, adopt bent axle directly to drive, a kind of modal rotor-type oil pump layout form, it on cylinder body placement machine oil pump into and out of oil duct, and in cylinder body front end crankshaft hole placement machine oil pump mounting hole.The oil pump of this form, due to outside crankcase, high to the seal request of oil pump, and assembling is also stricter to the alignment degree of bent axle, if control badly, easily produces the problems such as oil pump abnormal sound and rotor breakage.
The second structural type be arranged in oil sump, hangs the cylinder body bottom surface of installing under oil pump, adopts independent chain system to drive.It is more that this structure is applied at present, owing to being arranged on the sealing problem of having avoided the first form oil pump in oil sump; And owing to adopting independent chain system transmission, also avoided the work abnormal sound problem between inside and outside rotor in oil pump.But its structure is more complicated, increased engine assembly component number, also increased the axial dimension of motor, and cost is higher.
Summary of the invention
The object of the invention is to propose a kind of engine oil pump, simplified the mounting structure of oil pump, reduced the weight of motor integral body, reduced the risk of oil pump noise problem and leakage of oil.
According to engine oil pump provided by the invention, comprise pump housing assembly, pressure-limit valve assembly, the filler opening and the oil outlet that are communicated with oil input channel and oil road respectively, the filler opening of described pressure-limit valve assembly is communicated with described oil road, the drain tap of pressure-limit valve assembly is communicated with described oil input channel, key is: described oil input channel and oil road are all arranged in the casing wall of engine cylinder-body, described pump housing assembly is inserted between described oil input channel and oil road, the gear cavity of described pump housing assembly is the cavity between described oil input channel and oil road, the opening of described cavity extends to described engine cylinder surface, described oil road is communicated to engine cylinder-body bottom.
Engine oil pump of the present invention, by pump housing assembly being arranged in the casing wall of engine cylinder-body, so just without at the external gear cavity of separately establishing of engine cylinder, also just reduced the weight of motor integral body, the oil pump when having simplified conventional oil pump and arranging and oil duct trend, the sealing of cylinder body and the structure such as fix; Meanwhile, because gear cavity is integrated on cylinder body, can reduce noise problem; Oil input channel and oil road are integrated in the casing wall of engine cylinder-body, can reduce leakage of oil risk.
Further, the driving shaft of described pump housing assembly is connected with the timing sprocket of motor by timing chain.By adopting timing chain driving crank to drive, compared with traditional oil pump, adopt independent chain drive, reduced a set of oil pump Transmitted chains system, simple and compact for structure, cost is low.
Further, described pressure-limit valve assembly is upwards inserted in the installation cavity of casing wall from cylinder base.Using engine oil pump pressure-limiting valve as a total member, be directly installed on cylinder body, make pressure-limit valve become internal drainage type structure, can make more compact structure, reduce leakage of oil risk, cost-saving.
Specifically, between described pressure-limit valve assembly and the chamber wall of described installation cavity, by O type circle, seal.
Specifically, described oil pump is gear type oil pump, and the driving shaft of described pump housing assembly is installed by the axis hole interference fit on lining and engine cylinder-body.
As another kind of mode of execution, described oil pump is rotor-type oil pump, and the driving shaft of described pump housing assembly is installed by the axis hole interference fit on lining and engine cylinder-body.
Specifically, the pump cover of described pump housing assembly is by least three above being bolted on engine cylinder-body.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of oil pump of the present invention.
Fig. 2 is the gear cavity structural representation of oil pump pump housing assembly of the present invention.
Fig. 3 is the installation cooperation structure schematic diagram of oil pump of the present invention and engine cylinder-body.
Fig. 4 is oil pump outer mounting structure schematic diagram of the present invention.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and working principle etc.
Embodiment 1:
As Fig. 1, 2, 3, 4, engine oil pump of the present invention, comprise pump housing assembly 1, pressure-limit valve assembly 2, the filler opening 11 being communicated with oil input channel 3 and oil road 4 respectively and oil outlet 12, the filler opening 21 of pressure-limit valve assembly 2 is communicated with oil road 4, the drain tap 22 of pressure-limit valve assembly 2 is logical with oil input channel 3, oil input channel 3 is all arranged in the casing wall of engine cylinder-body 5 with oil road 4, pump housing assembly 1 is inserted between oil input channel 3 and oil road 4, the gear cavity of pump housing assembly 1 is the cavity 51 between oil input channel 3 and oil road 4, the opening of cavity 51 extends to engine cylinder-body 5 surfaces, oil road 4 is communicated to engine cylinder-body 5 bottoms.
Further, the driving shaft 13 of pump housing assembly 1 is connected with the timing sprocket of motor by timing chain, and wherein, driving shaft 13 connects sprocket wheel 6.By adopting timing chain driving crank to drive, compared with traditional oil pump, adopt independent chain drive, reduced a set of oil pump Transmitted chains system, simple and compact for structure, cost is low.
Further, pressure-limit valve assembly 2 is upwards inserted in the installation cavity 52 of casing wall from cylinder body 5 bottoms.Using engine oil pump pressure-limiting valve as a total member, be directly installed on cylinder body, make pressure-limit valve become internal drainage type structure, can make more compact structure, reduce leakage of oil risk, cost-saving.Between the chamber wall of pressure-limit valve assembly 2 and installation cavity 52, by O type circle 23 and O type circle 24, seal.
The driving shaft 13 of pump housing assembly 1 is installed by lining 130 and the axis hole interference fit on engine cylinder-body 5.The pump cover 14 of pump housing assembly 1 is fixed on engine cylinder-body 5 by bolt 140.
Claims (7)
1. an engine oil pump, comprise pump housing assembly, pressure-limit valve assembly, the filler opening and the oil outlet that are communicated with oil input channel and oil road respectively, the filler opening of described pressure-limit valve assembly is communicated with described oil road, the drain tap of pressure-limit valve assembly is communicated with described oil input channel, it is characterized in that: described oil input channel and oil road are all arranged in the casing wall of engine cylinder-body, described pump housing assembly is inserted between described oil input channel and oil road, the gear cavity of described pump housing assembly is the cavity between described oil input channel and oil road, the opening of described cavity extends to described engine cylinder surface, described oil road is communicated to engine cylinder-body bottom.
2. engine oil pump according to claim 1, is characterized in that the driving shaft of described pump housing assembly is connected with the timing sprocket of motor by timing chain.
3. engine oil pump according to claim 1, is characterized in that described pressure-limit valve assembly is upwards inserted in the installation cavity of casing wall from cylinder base.
4. engine oil pump according to claim 3, is characterized in that by O type circle, sealing between described pressure-limit valve assembly and the chamber wall of described installation cavity.
5. according to the engine oil pump described in claim 1 or 2 or 3 or 4, it is characterized in that described oil pump is gear type oil pump, the driving shaft of described pump housing assembly is installed by the axis hole interference fit on lining and engine cylinder-body.
6. according to the engine oil pump described in claim 1 or 2 or 3 or 4, it is characterized in that described oil pump is rotor-type oil pump, the driving shaft of described pump housing assembly is installed by the axis hole interference fit on lining and engine cylinder-body.
7. engine oil pump according to claim 5, is characterized in that the pump cover of described pump housing assembly is by least three above being bolted on engine cylinder-body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147528.1A CN103939173B (en) | 2014-04-14 | 2014-04-14 | A kind of engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147528.1A CN103939173B (en) | 2014-04-14 | 2014-04-14 | A kind of engine oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939173A true CN103939173A (en) | 2014-07-23 |
| CN103939173B CN103939173B (en) | 2016-09-14 |
Family
ID=51187016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410147528.1A Active CN103939173B (en) | 2014-04-14 | 2014-04-14 | A kind of engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939173B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964151A (en) * | 2015-07-03 | 2015-10-07 | 南京高德机械有限公司 | Diesel engine oil pump |
| CN105525964A (en) * | 2016-01-24 | 2016-04-27 | 徐毓艺 | Efficient and energy-saving lubricating oil pump |
| CN109000139A (en) * | 2018-08-06 | 2018-12-14 | 奇瑞汽车股份有限公司 | Rotor engine oil pump |
| CN109469528A (en) * | 2018-12-28 | 2019-03-15 | 杭州电子科技大学 | A kind of change discharge capacity inner-rotor-type lubricating oil pump |
| CN110486509A (en) * | 2019-09-16 | 2019-11-22 | 湖南机油泵股份有限公司 | It can prevent the engine oil pump pressure-limiting valve of plunger eccentric wear |
| CN111206974A (en) * | 2018-11-21 | 2020-05-29 | 宝沃汽车（中国）有限公司 | Engine and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0874596A (en) * | 1994-09-02 | 1996-03-19 | Yanmar Diesel Engine Co Ltd | Gear case of internal combustion engine |
| CN201050390Y (en) * | 2007-04-21 | 2008-04-23 | 潍柴动力股份有限公司 | Integral diesel engine oil pump |
| CN201738961U (en) * | 2010-06-30 | 2011-02-09 | 长城汽车股份有限公司 | Oil pump of transverse diesel engine |
| CN102052120A (en) * | 2010-11-27 | 2011-05-11 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN203394647U (en) * | 2013-07-12 | 2014-01-15 | 昆明云内动力股份有限公司 | Engine cylinder body of integrated oil pump shell |
-
2014
- 2014-04-14 CN CN201410147528.1A patent/CN103939173B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0874596A (en) * | 1994-09-02 | 1996-03-19 | Yanmar Diesel Engine Co Ltd | Gear case of internal combustion engine |
| CN201050390Y (en) * | 2007-04-21 | 2008-04-23 | 潍柴动力股份有限公司 | Integral diesel engine oil pump |
| CN201738961U (en) * | 2010-06-30 | 2011-02-09 | 长城汽车股份有限公司 | Oil pump of transverse diesel engine |
| CN102052120A (en) * | 2010-11-27 | 2011-05-11 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN203394647U (en) * | 2013-07-12 | 2014-01-15 | 昆明云内动力股份有限公司 | Engine cylinder body of integrated oil pump shell |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964151A (en) * | 2015-07-03 | 2015-10-07 | 南京高德机械有限公司 | Diesel engine oil pump |
| CN105525964A (en) * | 2016-01-24 | 2016-04-27 | 徐毓艺 | Efficient and energy-saving lubricating oil pump |
| CN109000139A (en) * | 2018-08-06 | 2018-12-14 | 奇瑞汽车股份有限公司 | Rotor engine oil pump |
| CN111206974A (en) * | 2018-11-21 | 2020-05-29 | 宝沃汽车（中国）有限公司 | Engine and vehicle |
| CN109469528A (en) * | 2018-12-28 | 2019-03-15 | 杭州电子科技大学 | A kind of change discharge capacity inner-rotor-type lubricating oil pump |
| CN110486509A (en) * | 2019-09-16 | 2019-11-22 | 湖南机油泵股份有限公司 | It can prevent the engine oil pump pressure-limiting valve of plunger eccentric wear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939173B (en) | 2016-09-14 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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