CN103206284B - Rapid cooling lubrication structure for crankshaft rear oil seal - Google Patents
Rapid cooling lubrication structure for crankshaft rear oil seal Download PDFInfo
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- CN103206284B CN103206284B CN201210554103.3A CN201210554103A CN103206284B CN 103206284 B CN103206284 B CN 103206284B CN 201210554103 A CN201210554103 A CN 201210554103A CN 103206284 B CN103206284 B CN 103206284B
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- oil seal
- crankshaft
- crankshaft rear
- rear oil
- cylinder block
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Abstract
The invention discloses an oil seal lubrication structure, and provides a rapid cooling lubrication structure for a crankshaft rear oil seal, wherein the rapid cooling lubrication structure is simple, can effectively improve the lubrication state of the crankshaft rear oil seal and a crankshaft, reduces the temperature of frictional portions, prolongs the service life of the crankshaft rear oil seal, and solves the technical problems that the crankshaft rear oil seal is easily aged due to friction temperature rise, carbon deposition on a lip is aggravated, crankshaft neck friction is enlarged, so that a crankshaft neck is scratched, the oil seal loses effectiveness when the crankshaft neck is seriously scratched, and engine power is further reduced and the like due to leakage of lubricating oil of a crankshaft box in the prior art. The rapid cooling lubrication structure comprises the crankshaft rear oil seal and a crankshaft rear oil seal cover which are sleeved on the crankshaft on a cylinder, the crankshaft rear oil seal cover is covered outside the crankshaft rear oil seal, the crankshaft rear oil seal is sealed between the cylinder and the crankshaft rear oil seal cover by the crankshaft rear oil seal cover, an oil through hole is arranged on the end surface of the cylinder, the inner side end of the oil through hole is communicated with a main oil passage in the cylinder, and the outer side end of the oil through hole is communicated with the crankshaft rear oil seal.
Description
Technical field
The present invention relates to a kind of oil sealing lubricating structure, particularly relate to one and can avoid crankshaft rear oil seal and bent axle dry friction, extend the quick cooling and lubricating structure of crankshaft rear oil seal in crankshaft rear oil seal working life.
Background technique
Crankshaft rear oil seal is separated the lubricant oil of crankcase and the external world, internal oil sealing, externally dust-proof component.During use, the sealing lip of crankshaft rear oil seal and crankshaft journal are held tightly, therefore crankshaft rear oil seal is in Frotteurism for a long time with the bent axle of run up (regular price gasoline machine rated speed is at about 6000rpm), when higher engine speeds, the local temperature at friction position even exceedes the invalid temperature of oil seal lip material, not only cause crankshaft rear oil seal aging, lip carbon distribution increases the weight of, crankshaft journal is rubbed increase, thus cause crankshaft journal scratch, oil seal failure time serious, the oil seepage of crankcase, causes engine power to decline further.
Chinese patent discloses a kind of engine crankshaft combination Rear oil seal device (CN200961697Y), it mainly adopts seal lip to be placed in sealing seat, both are directly formed one, form a black box, then this black box fixing bolt is fixed on body and oil sump.Although the sealing lip in this structure and sealing seat adopt one-body molded, but it is easily aging equally to there is oil sealing in it, lip carbon distribution increases the weight of, crankshaft journal is rubbed increase, thus cause crankshaft journal scratch, oil seal failure time serious, the oil seepage of crankcase, causes degradation technical problem under engine power further.
Summary of the invention
It is simple that the present invention mainly provides a kind of structure, effectively can improve the lubricating status of crankshaft rear oil seal and bent axle, reduce the temperature at friction position, extend the quick cooling and lubricating structure of crankshaft rear oil seal in crankshaft rear oil seal working life, solve the crankshaft rear oil seal existed in prior art easily aging because of friction Temperature Rise, lip carbon distribution is increased the weight of, crankshaft journal friction increases, cause crankshaft journal scratch, oil seal failure time serious, the oil seepage of crankcase, causes the technical problem of degradation under engine power further.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the quick cooling and lubricating structure of a kind of crankshaft rear oil seal, comprise and cylinder block is set in crankshaft rear oil seal on bent axle and crankshaft rear oil seal lid, it is outer and be encapsulated in by crankshaft rear oil seal between cylinder block and crankshaft rear oil seal lid that crankshaft rear oil seal housing is located at crankshaft rear oil seal, the end face of described cylinder block is provided with oil through, the medial extremity of oil through is connected with the main oil gallery in cylinder block, and the outboard end of oil through is connected with crankshaft rear oil seal.By offering oil through in the cylinder block that crankshaft rear oil seal inner side surface is corresponding, and the inner side surface of one end of oil through and crankshaft rear oil seal is conducted, main oil gallery in the other end and cylinder block is conducted, during engine start, namely pressure oil in main oil gallery carry over oil through and enter in the space at crankshaft rear oil seal place, a stepping of going forward side by side enters the surface of contact of crankshaft rear oil seal and bent axle, thus improve the lubricating status of crankshaft rear oil seal and bent axle, reduce the temperature at friction position, not only extend crankshaft rear oil seal working life, and ensure that the stable performance of engine performance.
As preferably, described oil through is vertical on cylinder block end face corresponding to crankshaft rear oil seal.Convenient processing, reduces lubricant oil stroke simultaneously, guarantees that the surface of contact of crankshaft rear oil seal and bent axle obtains fast lubricant and cooling after the engine started.
As preferably, in described oil through, be embedded with cooling jet, cooling jet is the tubular structure that one end open is closed in one end, and the closed end of cooling jet towards crankshaft rear oil seal, and is provided with several mist of oil spray orifices on the closed end of cooling jet.By the cooling jet of setting-in in oil through with mist of oil spray orifice, the pressure lubrication oil of derivation is made to be vaporific, the surface of contact of crankshaft rear oil seal and bent axle is not only made to be lubricated evenly and rapidly after the engine started, and make the sealing receiving cavity at crankshaft rear oil seal place have certain pressure, this pressure is on the one hand for balancing oil pressure, prevent too much lubricant oil from importing, guarantee that the surface of contact of crankshaft rear oil seal and bent axle obtains sufficient lubrication and cooling on the other hand, structure is simple, easy for installation, effectively balance the external and internal pressure of crankshaft rear oil seal, under the prerequisite ensureing sealing, effective lubricating status improving crankshaft rear oil seal and bent axle, reduce the temperature at friction position.
As more preferably, described cooling jet is ladder pipe small in ends broad in the middle, and the miner diameter end of cooling jet extends in outside cylinder block wall, and mist of oil spray orifice is located on the outer corresponding cooling jet miner diameter end of cylinder block.When cooling jet is ladder pipe small in ends broad in the middle, be convenient to processing and install, the thin footpath end of inner side may extend in main lubrication road, and the thin footpath end in outside is used for arranging mist of oil spray orifice, improves atomizing effect, ensures that friction position obtains sufficient lubrication.
As more preferably, the aperture of described cooling jet is φ 2mm to φ 5mm, and the latus rectum of mist of oil spray orifice is φ 0.2mm to φ 1mm.Rational cooling jet and mist of oil spray orifice aperture, can improve atomizing effect, ensures that friction position obtains sufficient lubrication.
Therefore, a kind of crankshaft rear oil seal of the present invention quick cooling and lubricating structure has following advantage:
1. when engine cold just starts, lubricant oil arrives the cooling jet place aiming at cooling crankshaft rear oil seal by main oil gallery, fast lubricant crankshaft rear oil seal, reduces crankshaft rear oil seal and crankshaft journal unlubricated friction time;
2. during engine running, cooling jet sprays to crankshaft rear oil seal incessantly by filtering cooled lubricant oil in main oil gallery, make crankshaft rear oil seal temperature maintain a lower state thus extend its working life, and reduce the friction of crankshaft rear oil seal and crankshaft journal;
3. easy for installation for realizing nozzle, adopt press-loading process to realize the efficient and convenient installation of nozzle.
Accompanying drawing illustrates:
Fig. 1 is the explosive view of the quick cooling and lubricating structure of a kind of crankshaft rear oil seal of the present invention;
Fig. 2 is that the present invention dismantles the structural representation of crankshaft rear oil seal and crankshaft rear oil seal lid;
Fig. 3 is the A place enlarged view shown in Fig. 2;
Fig. 4 is the enlarged view of cooling jet.
embodiment:
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment:
As depicted in figs. 1 and 2, the quick cooling and lubricating structure of a kind of crankshaft rear oil seal of the present invention, comprise cylinder block 1, bent axle 2 axle journal of cylinder block 1 is set with a crankshaft rear oil seal 3 and a crankshaft rear oil seal lid 4 successively, wherein crankshaft rear oil seal lid 4 covers and is contained in outside crankshaft rear oil seal 3 and is encapsulated between cylinder block 1 exterior edge face and crankshaft rear oil seal lid 4 by crankshaft rear oil seal 3, as shown in Figure 3, the exterior edge face of cylinder block 1 vertically has an oil through 5, the two ends of oil through 5 are communicated with between main oil gallery in cylinder block 1 and crankshaft rear oil seal 3 inner side surface, the copper cooling jet 6 of setting-in one in oil through 5, as shown in Figure 4, cooling jet 6 for outboard end close, the tubular structure of medial extremity opening, its diameter of bore is φ 3mm, and cooling jet 6 is in broad in the middle small in ends stepped, the bigger diameter end face of cooling jet 6 is equal together with the inside and outside wall of cylinder block 1, inside it, miner diameter end extends the main oil gallery be communicated in cylinder block 1, outside the cooling jet 6 of crankshaft rear oil seal 3, miner diameter end is having several mist of oil spray orifices 7, the latus rectum of mist of oil spray orifice 7 is φ 0.3mm.
During use, when engine cold starts, the main oil gallery of lubricant oil in cylinder block 1 enters cooling jet 6, then sprays rear atomization from mist of oil spray orifice 7, and then the surface of contact of fast lubricant crankshaft rear oil seal 3 and bent axle 2, decrease the unlubricated friction time of crankshaft rear oil seal 3 and bent axle 2 axle journal; During normal working of engine, cooling jet 6 sprays to crankshaft rear oil seal 3 incessantly by filtering cooled lubricant oil in main oil gallery, crankshaft rear oil seal 3 temperature is made to maintain a lower state, thus extend the working life of crankshaft rear oil seal 3, and improve the lubricating status of crankshaft rear oil seal 3 and bent axle 2 axle journal.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (4)
1. the quick cooling and lubricating structure of crankshaft rear oil seal, comprise and cylinder block (1) is set in crankshaft rear oil seal (3) on bent axle (2) and crankshaft rear oil seal lid (4), crankshaft rear oil seal lid (4) is located at crankshaft rear oil seal (3) and be encapsulated between cylinder block (1) and crankshaft rear oil seal lid (4) by crankshaft rear oil seal (3) outward, it is characterized in that: on the end face of described cylinder block (1), be provided with oil through (5), the medial extremity of oil through (5) is connected with the main oil gallery in cylinder block (1), the outboard end of oil through (5) is connected with crankshaft rear oil seal (3), cooling jet (6) is embedded with in described oil through (5), cooling jet (6) is for closing the tubular structure of one end open in one end, the closed end of cooling jet (6) towards crankshaft rear oil seal (3), and is provided with several mist of oil spray orifices (7) on the closed end of cooling jet (6).
2. the quick cooling and lubricating structure of a kind of crankshaft rear oil seal according to claim 1, is characterized in that: described oil through (5) is vertical on cylinder block (1) end face corresponding to crankshaft rear oil seal (3).
3. the quick cooling and lubricating structure of a kind of crankshaft rear oil seal according to claim 1, it is characterized in that: described cooling jet (6) is ladder pipe small in ends broad in the middle, and the miner diameter end of cooling jet (6) extends in outside cylinder block (1) wall, mist of oil spray orifice (7) is located on cylinder block (1) cooling jet (6) miner diameter end corresponding outward.
4. the quick cooling and lubricating structure of a kind of crankshaft rear oil seal according to claim 1, is characterized in that: the aperture of described cooling jet (6) is φ 2mm to φ 5mm, and the latus rectum of mist of oil spray orifice (7) is φ 0.2mm to φ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554103.3A CN103206284B (en) | 2012-12-19 | 2012-12-19 | Rapid cooling lubrication structure for crankshaft rear oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554103.3A CN103206284B (en) | 2012-12-19 | 2012-12-19 | Rapid cooling lubrication structure for crankshaft rear oil seal |
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| CN103206284A CN103206284A (en) | 2013-07-17 |
| CN103206284B true CN103206284B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210554103.3A Active CN103206284B (en) | 2012-12-19 | 2012-12-19 | Rapid cooling lubrication structure for crankshaft rear oil seal |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953115A (en) * | 2018-09-27 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of atomized lubrication device, crankshaft, compressor and refrigerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100268Y (en) * | 2007-05-30 | 2008-08-13 | 付培勇 | Rotary axis seal for assembly plaster discharge pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56154511U (en) * | 1980-04-17 | 1981-11-18 | ||
| JP3754572B2 (en) * | 1999-04-13 | 2006-03-15 | 本田技研工業株式会社 | Oil seal lubrication device for internal combustion engine |
| JP2001303920A (en) * | 2000-04-28 | 2001-10-31 | Sanshin Ind Co Ltd | Spline lubrication structure for outboard motor |
| JP2004052863A (en) * | 2002-07-18 | 2004-02-19 | Shinagawa Kogyosho:Kk | Seal structure of main shaft of agitating device |
| JP2007232181A (en) * | 2006-03-03 | 2007-09-13 | Toyota Motor Corp | Rear end sealing structure of crankshaft |
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- 2012-12-19 CN CN201210554103.3A patent/CN103206284B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100268Y (en) * | 2007-05-30 | 2008-08-13 | 付培勇 | Rotary axis seal for assembly plaster discharge pump |
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| CN103206284A (en) | 2013-07-17 |
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