CN105545443A - Piston cooling nozzle - Google Patents
Piston cooling nozzle Download PDFInfo
- Publication number
- CN105545443A CN105545443A CN201511029392.5A CN201511029392A CN105545443A CN 105545443 A CN105545443 A CN 105545443A CN 201511029392 A CN201511029392 A CN 201511029392A CN 105545443 A CN105545443 A CN 105545443A
- Authority
- CN
- China
- Prior art keywords
- piston
- jet pipe
- cooling
- nozzle body
- spray pipe
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
Abstract
The invention relates to the technical field of engine cooling and provides a piston cooling nozzle comprising a nozzle body, wherein the nozzle body is connected with a main spray pipe and an auxiliary spray pipe, the internal diameter of the main spray pipe is larger than that of the auxiliary spray pipe, the spray direction of the main spray pipe faces to a piston inner-cooling oil duct, and the spray direction of the auxiliary spray pipe faces to the middle of the bottom of the piston. The piston cooling nozzle provided by the invention is provided with the main spray pipe and the auxiliary spray pipe which have different spray directions and spray capacities, wherein most of lubricating oil in the nozzle body enters the main spray pipe so as to enter the piston inner-cooling oil duct to cool the piston by using an oscillation cooling method; and the left lubricating oil aligns to the bottom of the middle of the piston through the auxiliary spray pipe to lubricate between a piston pin and the piston and between the piston pin and the small end of a connecting rod. By using the piston cooling nozzle, the middle cooling effect of the piston is improved, the heat crack-melting and blocking risks of the piston are avoided, and the abrasion of a bushing of the piston pin and a bushing of the small end of the connecting rod is reduced.
Description
Technical field
The present invention relates to engine cooling technical field, particularly relate to a kind of piston cooling nozzle.
Background technique
In prior art, the general piston cooling nozzle that adopts carries out pressure cooling to piston.Particularly, lubricant oil is injected the cooling oil duct of piston by piston cooling nozzle with certain pressure, lubricant oil is flowed wherein with cooling piston; Or lubricant oil is directly sprayed to piston base, adopt splashing mode to cool and lube pistons.
But require to meet increasingly strict environmental regulation and realize low oil consumption, the reinforcing degree of motor is more and more high.For the motor of height strengthening, cylinder temperature is higher, and oil duct in piston is arranged in the excircle of piston crown, and in the middle part of piston, cooling effect is relatively weak.If now still adopt traditional piston cooling nozzle, first there is hot tearing fusing risk.Secondly, under high temperature, the easy coking of lubricant oil, causes Piston Carbon, and then causes piston ring stuck.Finally, in piston cylinder, working pressure is higher, and wrist pin and the Intercapital frictional force of piston and connecting rod greatly, easily cause wrist pin and lining of connecting rod small end wearing and tearing.
Refer to Fig. 1, publication number is the structure that patent discloses a kind of engine piston cooling nozzle 200 and the controlling method of CN103470357A: this patent cylinder body both sides below piston 100 are respectively equipped with air inlet side cooling jet and exhaust side cooling jet, respectively bottom the piston 100 of intake and exhaust side, the main purpose of this invention meets under various working condition, and piston 100 Main thrust face and Mi thrust face all can obtain good lubrication and cooling.
On this basis, although this invention can improve cooling effect in the middle part of piston 100 to a certain extent, this invention needs all to arrange oil duct in cylinder body both sides, and tank design difficulty of processing improves, further, a piston 100 adopts the design of two nozzles to add cost.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is just to provide a kind of piston cooling nozzle, under difficulty of processing and the relatively low prerequisite of cost of production, ensures the effective cooling to piston.
(2) technological scheme
In order to solve the problems of the technologies described above, the invention provides a kind of piston cooling nozzle, comprise nozzle body, described nozzle body is connected with main jet pipe and secondary jet pipe, the internal diameter of described main jet pipe is greater than the internal diameter of described secondary jet pipe, and the injection direction of described main jet pipe is towards described oil duct in piston, the injection direction of described secondary jet pipe is towards the middle part of described piston bottom surface.
Preferably, described main jet pipe is all connected with described nozzle body by soldering with secondary jet pipe.
Preferably, described nozzle body is connected with oil leab by hollow bolt, and described hollow bolt is threaded with described oil leab through after described nozzle body.
Preferably, described nozzle body is provided with the locating stud with described nozzle body interference fit, prevents described nozzle body from rotating relative to described oil leab.
Preferably, injection one end of described main jet pipe is provided with the reducing of control flow check flux.
Preferably, described main jet pipe is plane structure, and described secondary jet pipe is 3-D solid structure.
(3) beneficial effect
Technological scheme of the present invention has following beneficial effect: piston cooling nozzle of the present invention, is provided with the injection direction main jet pipe all different with jet power and secondary jet pipe.Wherein, the lubricant oil major part in nozzle body enters in main jet pipe, thus makes most of lubricant oil enter the interior oil cooling passage of piston, is cooled piston by concussion cooling means.Remaining lubricant oil aims at bottom surface in the middle part of piston by secondary jet pipe, between wrist pin and piston, and lubricates between wrist pin and connecting rod small end.This piston cooling nozzle improves cooling effect in the middle part of piston, avoids piston hot tearing fusing and stuck risk, and reduces the wearing and tearing of wrist pin and lining of connecting rod small end.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the piston cooling nozzle of prior art;
Fig. 2 is the schematic front view of the piston cooling nozzle of embodiment;
Fig. 3 is the schematic top plan view of the piston cooling nozzle of embodiment;
Fig. 4 is piston and piston cooling nozzle relative position schematic diagram
Fig. 5 is the cross-sectional schematic at A-A place in Fig. 4;
In figure: 100, piston; 200, piston cooling nozzle; 1, nozzle body; 2, hollow bolt; 3, locating stud; 4, main jet pipe; 5, secondary jet pipe; 6, piston; 7, oil duct in piston; 8, bottom surface in the middle part of piston.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
The piston cooling nozzle of the present embodiment, refers to Fig. 2 and Fig. 3, comprises nozzle body 1, described nozzle body 1 is connected with main jet pipe 4 and secondary jet pipe 5.Wherein, the internal diameter of main jet pipe 4 is greater than the internal diameter of described secondary jet pipe 5, thus ensures that the jet power of main jet pipe 4 is greater than the jet power of secondary jet pipe 5, makes more lubricant oil enter into main jet pipe 4 instead of secondary jet pipe 5 by nozzle body 1.On this basis, the through-current capacity of main jet pipe 4, except relevant with cross-sectional dimension, also can arrange reducing in the ejection end of main jet pipe 4, and the through-current capability of this reducing size and main jet pipe 4 is directly proportional.
On this basis, after piston cooling nozzle is in place, refer to Fig. 4 and Fig. 5, the injection direction of main jet pipe 4 is towards described oil duct in piston 7, the lubricant oil great majority that main jet pipe 4 is sprayed enter oil duct in piston 7, are cooled piston 6 by concussion cooling means.The injection direction of described secondary jet pipe 5, towards the middle part of described piston 6 bottom surface, makes the lubricant oil of oil cooling passage 7 in non-injection into pistion then sell piston 6 and connecting rod small end lubricates.Particularly piston 6 is sold and the link position of piston 6, and piston 6 is sold and is lubricated with the link position of connecting rod small end.
Because the interior oil cooling passage of piston 6 is arranged in the excircle of piston 6 head, so machine oil main cooling piston 6 external edge of head of main jet pipe 4 ejection.On this basis, the lubricant oil that secondary jet pipe 5 sprays directly aims at bottom surface 8 in the middle part of piston, so can improve the cooling effect in the middle part of piston 6.The two combines, and piston 6 is cooled uniformly.
Further, this secondary jet pipe 5, as the supplementary means of main jet pipe 4, which obviates piston 6 and occurs hot tearing fusing risk; And effectively prevent lubricant oil coking and cause piston 6 carbon distribution, and then piston 6 ring caused is stuck; And prevent working pressure in plug cylinder higher cause piston 6 to sell and frictional force between piston 6 and connecting rod small end large, and then the piston 6 caused is sold and the wearing and tearing of lining of connecting rod small end.Compared to the piston cooling nozzle of common single spraying pipe, this secondary jet pipe 5 significantly improves the cooling effect of piston 6.
The piston cooling nozzle of the present embodiment, preferably but must be all connected with described nozzle body 1 by soldering with secondary jet pipe 5 by main jet pipe 4.Wherein, be positioned at the position in the close outside of cylinder body due to main jet pipe 4, therefore it is not easy to interfere with connecting rod, for the ease of processing and saving manufacture cost, main jet pipe 4 is designed to plane structure.In addition, secondary jet pipe 5 is owing to aiming in the middle part of piston 6 bottom surface, and therefore the cast of secondary jet pipe 5 needs design according to layout, and dodge the running gear such as connecting rod and piston 6, the therefore general 3-D solid structure that is designed to, please with further reference to Fig. 2 and Fig. 3.
On this basis, nozzle body 1 is connected with oil leab by hollow bolt 2.Particularly, described hollow bolt 2 is threaded with described oil leab through after described nozzle body 1.Lubricant oil arrives nozzle body 1 from hollow bolt 2 and is diverted to main jet pipe 4 and secondary jet pipe 5 by nozzle body 1.
Further, after nozzle body 1 to be connected with oil leab and to put in place, in order to avoid nozzle body 1 rotates relative to described oil leab, ensure that piston cooling nozzle is accurately located preferably by locating stud 3.Wherein, locating stud 3 and nozzle body 1 interference fit.
Above mode of execution is only for illustration of the present invention, but not limitation of the present invention.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to technological scheme of the present invention, do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a piston cooling nozzle, it is characterized in that, comprise nozzle body, described nozzle body is connected with main jet pipe and secondary jet pipe, the internal diameter of described main jet pipe is greater than the internal diameter of described secondary jet pipe, and the injection direction of described main jet pipe is towards described oil duct in piston, the injection direction of described secondary jet pipe is towards the middle part of described piston bottom surface.
2. piston cooling nozzle according to claim 1, is characterized in that, described main jet pipe is all connected with described nozzle body by soldering with secondary jet pipe.
3. piston cooling nozzle according to claim 1, is characterized in that, described nozzle body is connected with oil leab by hollow bolt, and described hollow bolt is threaded with described oil leab through after described nozzle body.
4. piston cooling nozzle according to claim 1, is characterized in that, described nozzle body is provided with the locating stud with described nozzle body interference fit, prevents described nozzle body from rotating relative to described oil leab.
5. piston cooling nozzle according to claim 1, is characterized in that, injection one end of described main jet pipe is provided with the reducing of control flow check flux.
6. piston cooling nozzle according to claim 1, is characterized in that, described main jet pipe is plane structure, and described secondary jet pipe is 3-D solid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029392.5A CN105545443A (en) | 2015-12-31 | 2015-12-31 | Piston cooling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029392.5A CN105545443A (en) | 2015-12-31 | 2015-12-31 | Piston cooling nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105545443A true CN105545443A (en) | 2016-05-04 |
Family
ID=55824928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511029392.5A Pending CN105545443A (en) | 2015-12-31 | 2015-12-31 | Piston cooling nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105545443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107698A (en) * | 2021-05-07 | 2021-07-13 | 东风柳州汽车有限公司 | Internal combustion engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201943792U (en) * | 2010-12-31 | 2011-08-24 | 潍柴动力股份有限公司 | Engineering machinery, engine and piston cooling mechanism of engine |
| CN202187818U (en) * | 2011-06-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Engine piston cooling nozzle |
| KR101283708B1 (en) * | 2006-12-22 | 2013-07-08 | 두산인프라코어 주식회사 | Piston Cooling Oil Spray Nozzle |
| CN103470357A (en) * | 2013-06-24 | 2013-12-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Engine piston cooling nozzle structure and control method |
| CN203669984U (en) * | 2013-12-27 | 2014-06-25 | 中国第一汽车股份有限公司 | Double-nozzle piston cooling nozzle assembly |
| CN204716375U (en) * | 2015-04-17 | 2015-10-21 | 无锡威孚施密特动力系统零部件有限公司 | A kind of piston cooling nozzle |
| CN105452619A (en) * | 2013-08-09 | 2016-03-30 | 丰田自动车株式会社 | Oil jet |
-
2015
- 2015-12-31 CN CN201511029392.5A patent/CN105545443A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101283708B1 (en) * | 2006-12-22 | 2013-07-08 | 두산인프라코어 주식회사 | Piston Cooling Oil Spray Nozzle |
| CN201943792U (en) * | 2010-12-31 | 2011-08-24 | 潍柴动力股份有限公司 | Engineering machinery, engine and piston cooling mechanism of engine |
| CN202187818U (en) * | 2011-06-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Engine piston cooling nozzle |
| CN103470357A (en) * | 2013-06-24 | 2013-12-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Engine piston cooling nozzle structure and control method |
| CN105452619A (en) * | 2013-08-09 | 2016-03-30 | 丰田自动车株式会社 | Oil jet |
| CN203669984U (en) * | 2013-12-27 | 2014-06-25 | 中国第一汽车股份有限公司 | Double-nozzle piston cooling nozzle assembly |
| CN204716375U (en) * | 2015-04-17 | 2015-10-21 | 无锡威孚施密特动力系统零部件有限公司 | A kind of piston cooling nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107698A (en) * | 2021-05-07 | 2021-07-13 | 东风柳州汽车有限公司 | Internal combustion engine |
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Application publication date: 20160504 |
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