CN201246204Y - Lubricating system of diesel engine - Google Patents
Lubricating system of diesel engine Download PDFInfo
- Publication number
- CN201246204Y CN201246204Y CNU200820189242XU CN200820189242U CN201246204Y CN 201246204 Y CN201246204 Y CN 201246204Y CN U200820189242X U CNU200820189242X U CN U200820189242XU CN 200820189242 U CN200820189242 U CN 200820189242U CN 201246204 Y CN201246204 Y CN 201246204Y
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- China
- Prior art keywords
- oil
- oil pump
- hole
- crankshaft
- connecting rod
- 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.)
- Expired - Fee Related
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A lubricating system of a diesel engine comprises an oil pump shaft arranged in an oil pump and a connecting rod connected with a crankshaft, a connecting rod bearing shell is arranged in the position of a connecting rod journal, an oblique oil hole or a spiral oil hole which leads to the connecting rod journal and the connecting rod bearing shell is formed on the crankshaft, the oblique oil hole or the spiral oil hole is communicated with the center hole of the crankshaft, and the center hole of the crankshaft is communicated with the center hole on the oil pump shaft. A side opening and an annular oil groove which are communicated with the center hole are formed on the oil pump shaft of the oil pump. An oil return hole is formed on the casing of the oil pump, and the oil return hole is communicated with the center hole of the crankshaft after passing through the annular oil groove, the side opening and the center hole. The oil return hole is communicated with the outlet of an oil filter. An outer rotor and an inner rotor are arranged in the casing of the oil pump, the inner rotor is mounted on the oil pump shaft, and the outer rotor is freely arranged in the casing of the oil pump and meshed with the inner rotor to form four working spaces which are separated from each other. The utility model has the characteristics of simple and reasonable structure, good lubrication effect and long service life.
Description
Technical field
The utility model relates to the lubrication system of a kind of diesel engine, particularly a kind of diesel engine.
Background technique
At present, the diesel engine on the market, it adopts following structure to lubricating of the rod journal on the bent axle more: lubricant oil is via oil pump input body main oil gallery, and main oil gallery is delivered to the lubricated bearing shell of each rod journal on body again.Realize this structure, just must on body, process various oil ducts, and oil pump must be driven through gear mechanism by bent axle.For some type, it is comparatively complicated that this result just seems, the manufacture cost height.At this situation, some manufacturer has done a little improvement, as disclosing a kind of lubrication system of diesel engine among the Chinese patent literature CN2830652Y, have connecting rod bearing shell oil jet lubrication structure and cylinder head rocker part lubricating structure, it is characterized in that: connecting rod bearing shell oil jet lubrication structure has the main oil gallery of body, bent axle, the main oil gallery of body is provided with nozzle opening, the rod journal place of bent axle is provided with oil inlet hole, end at oil inlet hole is provided with oil outlet, the other end of oil outlet is communicated with the lubricated surface of the rod journal of bent axle and connecting rod bearing shell, cylinder head rocker part lubricating structure has body, cylinder cap, be provided with camshaft at the body inner chamber, be provided with pitman arm shaft and rocker arm bracket at the cylinder cap inner chamber, camshaft microcephaly axle journal place is provided with spiral chute and axle center oilhole, and the body of camshaft microcephaly axle journal end is provided with oil pocket, and spiral chute and oil pocket communicate, oil pocket and axle center oilhole communicate, and pitman arm shaft inside offers the intersection oil duct; Be respectively arranged with the dark oil duct of body, the dark oil duct of cylinder cap and the dark oil duct of rocker arm bracket and connection successively in body inwall, cylinder cap and rocker arm bracket inside; The other end of the dark oil duct of body communicates with the axle center oilhole, the dark oil duct the other end of rocker arm bracket with intersect oil duct and communicate.Though the lubrication system of this diesel engine has reduced the generation of Bearing score phenomenon,, its structure more complicated, fabricating cost are than higher, and lubrication effect is also good inadequately.
The model utility content
The purpose of this utility model aims to provide the lubrication system of a kind of diesel engine of a kind of simple and reasonable, high lubricating effect, long service life, to overcome deficiency of the prior art.
Press the lubrication system of a kind of diesel engine of this purpose design, comprise the machine oil pump shaft that is arranged in the oil pump, the connecting rod that joins with bent axle, the rod journal place is provided with connecting rod bearing shell, its structure characteristic is that bent axle is provided with inclined oil hole of air or the spiral oilhole that leads to rod journal and connecting rod bearing shell, inclined oil hole of air or spiral oilhole communicate with central hole of the crankshaft, and central hole of the crankshaft communicates with center hole on the machine oil pump shaft.
The machine oil pump shaft of described oil pump is provided with side opening and the annular oil groove that connects with center hole.
The housing of described oil pump is provided with spill port, and this spill port communicates with central hole of the crankshaft by annular oil groove, side opening and center hole successively.
Described spill port communicates with the outlet of oil filter.
Be provided with external rotor and internal rotor in the housing of described oil pump, internal rotor is installed on the machine oil pump shaft, and external rotor is mounted freely in the housing of oil pump, and forms four working areas that isolate mutually with internal rotor engagement back.
Be provided with two zones that isolate mutually in the housing of described oil pump, be respectively oil suction district and oil extraction district; The housing of oil pump is provided with filler opening and oil outlet, and filler opening communicates with the oil suction district, and oil outlet communicates with the oil extraction district.
Described oil outlet communicates with the import of oil filter.
Described inclined oil hole of air or spiral oilhole one end communicate with the oilhole of rod journal through connecting rod neck oil duct, and the middle part communicates with central hole of the crankshaft, and the other end is by the inner ring sealing that is arranged on the bearing on the bent axle master neck.
Described oil pump is joined by driving pin and bent axle.
Be provided with seal ring between described machine oil pump shaft and the central hole of the crankshaft.
The utility model utilizes central hole of the crankshaft replacement body main oil gallery in the past, realization is lubricated to connecting rod bearing shell, high lubricating effect, also obtained prolongation working life, and oil pump is directly by crank-driven, so little, the compact structure of its overall volume, required number of spare parts is also less, easy processing, fabricating cost are also lower, and reliability is better.
Description of drawings
Fig. 1 is the utility model one embodiment's broken section structural representation.
Fig. 2 is the I place structure for amplifying schematic representation among Fig. 1.
Fig. 3 is that A-A among Fig. 2 is to broken section structure for amplifying schematic representation.
Working state structure schematic representation when Fig. 4 is oil pump oil-feed in the utility model.
Fig. 5 is the working state structure schematic representation in machine oil pump pressure when oil in the utility model.
Fig. 6 is the working state structure schematic representation of the oil pump in the utility model when fuel-displaced.
Among the figure: 1 is oil pump, and 2 is bent axle, and 3 are the oil suction dish, and 4 is filler opening, 5 is oil outlet, and 6 is spill port, and 7 is the housing of oil pump, and 8 is the machine oil pump shaft, 9 is center hole, and 10 is side opening, and 11 is central hole of the crankshaft, and 12 is inclined oil hole of air, 13 is connecting rod bearing shell, and 14 is bearing, and 15 is internal rotor, 16 is external rotor, and 17 are the oil suction district, and 18 are the oil extraction district, 19 is annular oil groove, and 20 is driving pin, and 21 is seal ring.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1-Fig. 6, the lubrication system of this diesel engine, comprise the machine oil pump shaft 8 that is arranged in the oil pump 1, the connecting rod that joins with bent axle 2, the rod journal place is provided with connecting rod bearing shell 13, and bent axle is provided with the inclined oil hole of air 12 that leads to rod journal and connecting rod bearing shell, and inclined oil hole of air one end communicates with the oilhole of rod journal through connecting rod neck oil duct, the middle part communicates with central hole of the crankshaft 11, and the other end is by the inner ring sealing that is arranged on the bearing 14 on the bent axle 2 main necks.Oil pump 1 is joined by driving pin 20 and bent axle 2.Be provided with seal ring 21 between machine oil pump shaft 8 and the central hole of the crankshaft 11.
Central hole of the crankshaft communicates with center hole 9 on the machine oil pump shaft.The machine oil pump shaft 8 of oil pump 1 is provided with side opening 10 and the annular oil groove 19 that connects with center hole 9.Be provided with external rotor 16 and internal rotor 15 in the oil pump 1, internal rotor is installed on the machine oil pump shaft 8, and external rotor is mounted freely in the housing 7 of oil pump, and the back that is meshed with internal rotor forms four working areas that isolate mutually.
Be provided with two zones that mutually isolate in the housing 7 of oil pump, be respectively oil suction district 17 and oil extraction district 18, the oil suction district communicates with filler opening 4 on being arranged on housing 7, and the oil extraction district communicates with oil outlet 5 on being arranged on housing.Oil outlet 5 communicates with the import of oil filter.Housing 7 is provided with the spill port 6 that diameter is Φ 5, and this spill port communicates with central hole of the crankshaft 11 by annular oil groove 19, side opening 10 and center hole 9 successively.Spill port 6 communicates with the outlet of oil filter.
Lubricating oil path is: oil pump 1 is directly driven by bent axle 2, lubricant oil is sucked filler opening 4 from oil suction dish 3, boost after oil outlet 5 is pressed into oil filter, lubricant oil after the smart filter flows back to oil pump 1 again, directly enter annular oil groove 19 through spill port 6, and enter central hole of the crankshaft 11 through side opening 10 and center hole 9, after inclined oil hole of air 12 is delivered to the oilhole on connecting rod neck and the connecting rod bearing shell 13, with lubricated connecting rod bearing shell pair.
During work, bent axle 2 drives internal rotor 15 rotations through driving pin 20 and machine oil pump shaft 8,15 of internal rotors drive external rotor 16 and turn in the same direction, owing between internal rotor and the external rotor certain throw of eccentric is arranged, sees Fig. 4-Fig. 6, therefore, when certain zone turns over filler opening 4, its volume increases, and will produce parital vacuum, and lubricant oil is inhaled into from the oil suction district 17 of filler opening in oil pump body 7; When this zone turned over oil outlet 5, volume reduced, and oil pressure raises, and the oil extraction district 18 of lubricant oil in oil pump body 7 is forced out from oil outlet.
Arrow among the figure, the direction of rotation of expression lubricating oil pump 1 inner and outer Rotator.
Claims (6)
1. the lubrication system of a diesel engine, comprise the machine oil pump shaft (8) that is arranged in the oil pump (1), the connecting rod that joins with bent axle (2), the rod journal place is provided with connecting rod bearing shell (13), it is characterized in that bent axle is provided with inclined oil hole of air (12) or the spiral oilhole that leads to rod journal and connecting rod bearing shell, inclined oil hole of air or spiral oilhole communicate with central hole of the crankshaft (11), and central hole of the crankshaft communicates with center hole (9) on the machine oil pump shaft.
2. according to the lubrication system of the described diesel engine of claim 1, it is characterized in that the machine oil pump shaft (8) of described oil pump (1) is provided with side opening (10) and the annular oil groove (19) that connects with center hole (9).
3. according to the lubrication system of the described diesel engine of claim 2, the housing (7) that it is characterized in that described oil pump (1) is provided with spill port (6), and this spill port communicates with central hole of the crankshaft (11) by annular oil groove (19), side opening (10) and center hole (9) successively.
4. according to the lubrication system of the described diesel engine of claim 1, it is characterized in that described inclined oil hole of air (12) or spiral oilhole one end communicate with the oilhole of rod journal through connecting rod neck oil duct, the middle part communicates with central hole of the crankshaft (11), and the other end is by the inner ring sealing that is arranged on the bearing (14) on the main neck of bent axle (2).
5. according to the lubrication system of the described diesel engine of claim 1, it is characterized in that described oil pump (1) joins by driving pin (20) and bent axle (2).
6. according to the lubrication system of the described diesel engine of claim 1, it is characterized in that being provided with seal ring (21) between described machine oil pump shaft (8) and the central hole of the crankshaft (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820189242XU CN201246204Y (en) | 2008-08-28 | 2008-08-28 | Lubricating system of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820189242XU CN201246204Y (en) | 2008-08-28 | 2008-08-28 | Lubricating system of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246204Y true CN201246204Y (en) | 2009-05-27 |
Family
ID=40730024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820189242XU Expired - Fee Related CN201246204Y (en) | 2008-08-28 | 2008-08-28 | Lubricating system of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246204Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN104406031A (en) * | 2014-11-18 | 2015-03-11 | 湖南崇德工业科技有限公司 | Oil returning system of rotating machinery circulation oil lubricating bearing |
| CN114278409A (en) * | 2021-12-31 | 2022-04-05 | 潍柴动力股份有限公司 | Crankshaft front end engine oil pressurizing structure and engine |
-
2008
- 2008-08-28 CN CNU200820189242XU patent/CN201246204Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN102829315B (en) * | 2012-08-30 | 2015-05-20 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN104406031A (en) * | 2014-11-18 | 2015-03-11 | 湖南崇德工业科技有限公司 | Oil returning system of rotating machinery circulation oil lubricating bearing |
| CN114278409A (en) * | 2021-12-31 | 2022-04-05 | 潍柴动力股份有限公司 | Crankshaft front end engine oil pressurizing structure and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG DELUX DIESEL ENGINE CO., LTD. Free format text: FORMER NAME: FOSHAN SHUNDE DELUX DIESEL ENGINE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528300 No. 23 Industrial Road, Shunde District, Guangdong, Foshan, Ronggui Patentee after: Guangdong Delux Diesel Engine Co., Ltd. Address before: 528300 No. 23 Industrial Road, Shunde District, Guangdong, Foshan, Ronggui Patentee before: Deli Diesel Engine Co., Ltd., Shunde District, Foshan City |
|
| DD01 | Delivery of document by public notice |
Addressee: Guangdong Delux Diesel Engine Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |