CN108104935A - A kind of shooting method of cooling nozzles - Google Patents
A kind of shooting method of cooling nozzles Download PDFInfo
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- CN108104935A CN108104935A CN201711451203.2A CN201711451203A CN108104935A CN 108104935 A CN108104935 A CN 108104935A CN 201711451203 A CN201711451203 A CN 201711451203A CN 108104935 A CN108104935 A CN 108104935A
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- Prior art keywords
- cooling nozzles
- cooling
- target
- luminous point
- fuel feed
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Classifications
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to technical field of engines, disclose a kind of shooting method of cooling nozzles.The shooting method of the cooling nozzles is included by cooling nozzles pine on valve body, and adjusts the position of cooling nozzles；By the light beam that the light-emitting device exported arranged on cooling nozzles is sent be irradiated to arranged on interior oil cooling passage fuel feed hole target practice beyond the Great Wall；Whether the luminous point that observation is practiced shooting beyond the Great Wall is in target center region；If so, cooling nozzles are fastened.The present invention by by be arranged on the light beam that sends of light-emitting device that cooling nozzles export be irradiated to arranged on interior oil cooling passage fuel feed hole target practice beyond the Great Wall, and it observes the luminous point beyond the Great Wall of practicing shooting whether the mode in target center region judges whether the oily beam ejected from cooling nozzles can be completely covered interior oil cooling passage fuel feed hole, cooling nozzles is enabled to monitor whether cooling nozzles are directed at interior oil cooling passage fuel feed hole in real time in assembling stage, realize dynamic centering, and ensure that the target practice efficiency of each cooling nozzles, so as to solve the problems, such as that existing cooling nozzles target practice efficiency is low.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of shooting methods of cooling nozzles.
Background technology
When engine designs, with the raising of engine power, piston workmanship increases, and piston cooling seems particularly heavy
It will.Under normal conditions, a kind of relatively effective type of cooling, i.e., set cooling oil duct in piston, and cooling nozzles spray machine oil
It is mapped in cooling oil duct and piston is cooled down.During engine use, if cooling nozzles cannot be exactly by machine oil
It being ejected into the oilhole of piston cooling oil passage, may result in the failure that scuffing of cylinder bore and molten top occurs in piston, failure effect is very serious,
Therefore it must assure that each nozzle of installation on the engine can spray machine oil according to design discharge exactly.
Cooling nozzles of the prior art assembling when do not have real time monitoring assemble after jet hole whether with piston in
The method of oil cooling passage fuel feed hole centering, but cooling nozzles size qualification is given tacit consent to when dispatching from the factory, that is, give tacit consent to cooling nozzles and assembling
It is latter surely to reach requirement.But it is in fact really not so, to reach completely by dimensional tolerance to ensure target practice efficiency
Effect, it is desirable that have very high manufacture level and point-device geometric tolerance.And it is that these are under current manufacture level
It is unable to reach, i.e., it is enabled to reach reluctantly, also it is present with manufacturing expense costliness, low production efficiency and low one system of grade of product qualification rate
Row problem can not meet batch production.
It would therefore be highly desirable to a kind of shooting method of new cooling nozzles is needed to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of shooting method of cooling nozzles, to solve existing cooling nozzles target practice efficiency
The problem of low.
For this purpose, the present invention uses following technical scheme：
A kind of shooting method of cooling nozzles, including：
By cooling nozzles pine on valve body；
The light beam that the light-emitting device exported arranged on cooling nozzles is sent is irradiated to the target practice arranged on interior oil cooling passage fuel feed hole
Beyond the Great Wall；
Whether the luminous point that observation is practiced shooting beyond the Great Wall is in target center region；
If luminous point is in target center region, cooling nozzles are fastened.
Preferably, if luminous point is not in target center region, continue to adjust the position of cooling nozzles, until practicing shooting beyond the Great Wall
Luminous point is in target center region.
Preferably, cooling nozzles are fastened by tightening bolt.
Preferably, before by cooling nozzles pine on valve body, the gap value that bolt is made to be located in valve body is further included
More than the dimensional tolerance of cooling nozzles.
Preferably, after cooling nozzles are fastened, further include to remove light-emitting device and practice shooting and fill in.
Preferably, by the light beam that sends of light-emitting device for being arranged on cooling nozzles outlet be irradiated to arranged on interior oil cooling passage into
Before the target practice beyond the Great Wall of oilhole, further include the supreme stop of piston jiggering.
Preferably, luminous point, which is in target center region, includes two target practice positions, target practice position is respectively that luminous point is in target center
Regional center and luminous point are in target center edges of regions.
Preferably, the oily beam of cooling nozzles injection forms oily beam overlay area at interior oil cooling passage fuel feed hole, work as luminous point
During in target center regional center, the center of circle of oily beam overlay area is overlapped with the center of circle of interior oil cooling passage fuel feed hole.
Preferably, when luminous point is in target center edges of regions, the edge of oily beam overlay area and interior oil cooling passage fuel feed hole
Edge inscribe.
Preferably, the radius in target center region is when luminous point is in target center edges of regions, the center of circle of oily beam overlay area
With the distance in the center of circle of interior oil cooling passage fuel feed hole.
Preferably, light-emitting device is laser emitter.
Beneficial effects of the present invention：
The present invention by will be arranged on the light beam that sends of light-emitting device that cooling nozzles export be irradiated to arranged on interior oil cooling passage into
The target practice of oilhole beyond the Great Wall, and observes the luminous point beyond the Great Wall of practicing shooting whether the mode in target center region judges to spray from cooling nozzles
Whether the oily beam gone out can be completely covered interior oil cooling passage fuel feed hole so that cooling nozzles can monitor cooling nozzles in real time in assembling stage
Interior oil cooling passage fuel feed hole whether is directed at, realizes dynamic centering, and ensure that the target practice efficiency of each cooling nozzles, so as to solve
The problem of existing cooling nozzles target practice efficiency of having determined is low.The cooling is more than by the gap value that bolt is made to be located in the valve body
The dimensional tolerance of nozzle ensure that cooling nozzles can freely adjust its position on valve body in erection stage；By tightening
It states bolt to fasten the cooling nozzles, make use of the principle that pressure is directly proportional to frictional force so that bolt can lock cooling
Oil nozzle；Two target practice positions that target center region is in by luminous point may determine that the scope in target center region, and further determine that target
The radius in heart district domain；By using light in same medium along the principle of straightline propagation, solving traditional assembly method can not will
The problem of jet hole of cooling nozzles aligns with interior oil cooling passage fuel feed hole, improves target practice efficiency.
Description of the drawings
Fig. 1 is the flow chart of the shooting method of cooling nozzles provided by the invention；
Fig. 2 is the schematic diagram of the shooting method of cooling nozzles provided by the invention；
Fig. 3 is a kind of schematic cross-section of cooling nozzles provided by the invention；
Fig. 4 is the structure diagram of another cooling nozzles provided by the invention；
Fig. 5 is the schematic cross-section of Fig. 4；
Fig. 6 is the schematic diagram of oily beam injection；
Fig. 7 is the schematic diagram that oily beam is practiced shooting；
Fig. 8 is the schematic diagram of target center radium computing method.
In figure：
1st, cooling nozzles；11st, oily beam；2nd, light-emitting device；21st, light beam；3rd, interior oil cooling passage；31st, practice shooting and fill in；4th, piston；5a、
First valve body；5b, the second valve body；6a, the first bolt；6b, the second bolt；7th, pedestal.
Specific embodiment
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of shooting method of cooling nozzles provided by the invention, including：
S101, design cooling nozzles 1, make cooling nozzles 1 adjustable compared with valve body position：
In one embodiment, current hollow bolt formula piston cooling nozzle is all with positioning pin, as long as this causes valve
After machining, the position relationship of the two just has been formed for body and piston cooling nozzle, can not adjust.Specifically, such as Fig. 3 institutes
Show, a kind of cooling nozzles provided by the invention be hollow bolt formula piston cooling nozzle, the cooling nozzles 1 eliminate positioning pin this
One structure, while the first valve body 5a and the first bolt 6a is clearance fit.Further, the internal thread diameter of the first valve body 5a with
The difference (i.e. bolt is located at the gap value in valve body) of the external thread diameter of first bolt 6a is more than the dimensional tolerance of cooling nozzles 1
(also referred to as manufacturing tolerance), the purpose is to ensure that cooling nozzles 1 can adjust in the position of erection stage.Typically, cooling nozzles 1
Dimensional tolerance for 2mm or so, it is preferable that the first bolt 6a is located at gap value in the first valve body 5a more than or equal to 2mm.By upper
It states and understands, the gap value that the first bolt 6a is located in the first valve body 5a is made to be more than the dimensional tolerance of cooling nozzles 1, to ensure to cool down
Nozzle 1 is adjustable compared with valve body position.
In another embodiment, current non-hollow bolt type piston cooling nozzle has Position Design, bolt root
Portion is designed with the positioning polished rod that one section of diameter is more than screw thread, and the spliced eye of nozzle body and valve body oil duct also has cooperation to position, this
Sample has been formed together the positioning method of plane and two pits (or one side is sold more) with installation faying face so that nozzle is positioned and can not carried out
Adjustment.Specifically, as shown in Figures 4 and 5, another cooling nozzles provided by the invention are non-hollow bolt type cooling nozzles, should
Second valve body 5b of cooling nozzles 1 is threadedly coupled respectively with pedestal 7 with two the second bolt 6b and is clearance fit.Further
Ground, on pedestal 7 with the internal thread diameter of the threaded hole of the second bolt 6b cooperations and the difference of the external thread diameter of the second bolt 6b
(i.e. bolt is located at the gap value in valve body) is more than the dimensional tolerance of cooling nozzles 1, and the purpose is to ensure that cooling nozzles 1 are being installed
The position in stage can adjust.Further, the internal thread diameter and second on pedestal 7 with the threaded hole of the second valve body 5b cooperations
The difference of the external thread diameter of valve body 5b is also greater than the dimensional tolerance of cooling nozzles 1 so that cooling nozzles 1 are in the position of erection stage
It puts and is more easily adjusted.Typically, the dimensional tolerance of cooling nozzles 1 is 2mm or so, it is preferable that the second bolt 6b
The gap value that gap value and the second valve body 5b in pedestal 7 are located in pedestal 7 is all higher than being equal to 2mm.It can be seen from the above,
The gap value that the second bolt 6a is located in the second valve body 5b is made to be more than the dimensional tolerance of cooling nozzles 1, to ensure 1 phase of cooling nozzles
It is adjustable for valve body position.
S102,1 pine of cooling nozzles is mounted on valve body, and adjusts the position of cooling nozzles 1：
In the erection stage of cooling nozzles 1, the cooling nozzles 1 according to the design of S101 steps is made to carry out loose dress, spray cooling
Position of the mouth 1 on valve body can be adjusted.
S103, the exit that light-emitting device 2 is assembled to cooling nozzles 1, while the plug 31 that will practice shooting is assembled to interior oil cooling passage 3
Fuel feed hole at：
As shown in Fig. 2, light-emitting device 2 be preferably laser emitter, practice shooting plug 31 for can allow technical staff observe by
The component for the laser that laser transmitter projects go out, such as stopper, plastic plug.
S104, by 4 jiggering of piston to top dead centre：
It is after the assembling of the pine dress to cooling nozzles 1, light-emitting device 2 and plug 31 of practicing shooting is completed, 4 jiggering of piston is supreme only
Point, this is because when piston 4 is located at top dead centre, the interior oil cooling passage 3 of piston 4 is farthest apart from the position of cooling nozzles 1, works as piston
4 be located at top dead centre when, if the target practice efficiency of cooling nozzles 1 can ensure, then when piston 4 is run to other positions, more
It can be ensured that the target practice efficiency of cooling nozzles 1 is high.
S105, laser emitter is opened, the light beam 21 sent by laser emitter is irradiated on target practice plug 31, and is observed
Whether the luminous point practiced shooting on plug 31 is in target center region：
If so, by tightening such as above-mentioned the first bolt 6a or the second bolt 6b being related to, the first bolt 6a of increase is to the
One valve body 5a and the second bolt 6b are to the pressure of pedestal 7, the principle being directly proportional to the pressure using frictional force, by cooling nozzles 1
Fastening.
If it is not, then continue adjust cooling nozzles 1 position, until practice shooting beyond the Great Wall 31 luminous point be in target center region.
Specifically, as shown in fig. 6, lubricating oil sprays at a certain angle from cooling nozzles 1 forms oily beam 11, and work is fallen into
At the fuel feed hole of the interior oil cooling passage 3 of plug 4.
Specifically, as shown in fig. 7, solid line circle represents oily beam that cooling nozzles 1 the eject shape at interior 3 fuel feed hole of oil cooling passage
Into oily beam overlay area, circle of dotted line represent in oil cooling passage fuel feed hole.
Specifically, luminous point, which is in target center region, includes two target practice positions, and target practice position is respectively that luminous point is in target center area
Domain center and luminous point are in target center edges of regions.When luminous point is in target center regional center, the center of circle of oily beam overlay area with it is interior
The center of circle of 3 fuel feed hole of oil cooling passage overlaps, i.e., the position shown in corresponding to A in Fig. 7.When luminous point is in target center edges of regions, oil
The edge inscribe at the edge of beam overlay area and interior 3 fuel feed hole of oil cooling passage, i.e., the position shown in corresponding to B in Fig. 7.Particularly,
When luminous point is not in target center region, oily beam overlay area is intersected with interior 3 fuel feed hole of oil cooling passage, i.e., corresponding to shown in C in Fig. 7
Position.In summary, when luminous point is in target center region, show that oily beam overlay area can cover all interior oil cooling passage 3
Fuel feed hole can guarantee the target practice efficiency of cooling nozzles 1 completely at this time；When luminous point is not in target center region, show that oily beam covers
Cover area cannot cover all the fuel feed hole of interior oil cooling passage 3, i.e., at this time it cannot be guaranteed that the target practice efficiency of cooling nozzles 1.
Specifically, the radius in target center region be when luminous point be in target center edges of regions, the center of circle of oily beam overlay area and
The distance in the center of circle of interior 3 fuel feed hole of oil cooling passage.As shown in figure 8, the computational methods of the radius in target center region are as follows：
The radius in target center region=L × tan a °-(D-H)/2
Wherein, a ° of half for 11 dispersion angle of oily beam, L are the outlet of cooling nozzles 1 when piston 4 is in top dead centre away from interior
The distance of the fuel feed hole of oil cooling passage 3, D are the diameter of interior 3 fuel feed hole of oil cooling passage, and H is the spout diameter of cooling nozzles 1.Further
Ground, a ° can estimate according to the relative dimensions of oil duct pressure and cooling nozzles 1, and L can be drawn by dimension chain calculating, and D and H are equal
It can directly be checked in from drawing.
In conclusion the accuracy of manufacture of traditional assembly method too dependent on cooling nozzles 1, even if manufacture has reached high
It is required that also can exist assembling when torsion etc. factors and cause target practice efficiency low, reason be cooling nozzles 1 assembling when without
Method monitors its target practice effect in real time.And the present invention cleverly solves this problem in that, the present invention has focused on assembling link, adopts
With by cooling nozzles 1, first pine fills, then the thinking tightened again after adjusting and being adjusted in place, so that it is guaranteed that each cooling spray
Mouth 1 can reach higher target practice efficiency, while be greatly reduced manufacture difficulty, kill two birds with one stone.It is noted that this hair
Bright selection is adjusted when piston 4 runs to top dead centre into Mobile state, more can guarantee that each of piston 4 in its stroke puts equal energy
Ensure target practice efficiency.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For the ordinary skill user of fields, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (11)
1. a kind of shooting method of cooling nozzles, which is characterized in that including：
By cooling nozzles (1) pine on valve body, and adjust the position of the cooling nozzles (1)；
The light beam (21) that the light-emitting device (2) for being arranged on the cooling nozzles (1) outlet is sent is irradiated to arranged on interior oil cooling passage (3)
On the target practice plug (31) of fuel feed hole；
The luminous point practiced shooting on plug (31) is observed whether in target center region；
If luminous point is in target center region, the cooling nozzles (1) are fastened.
2. the shooting method of cooling nozzles according to claim 1, which is characterized in that if luminous point is not in target center region,
Then continue to adjust the position of the cooling nozzles (1), until the luminous point filled on (31) of practicing shooting is in target center region.
3. the shooting method of cooling nozzles according to claim 1, which is characterized in that by tightening bolt by the cooling
Nozzle (1) fastens.
4. the shooting method of cooling nozzles according to claim 3, which is characterized in that described by cooling nozzles (1) pine
On valve body, and before adjusting the position of the cooling nozzles (1), further including makes between the bolt is located in the valve body
Gap amount is more than the dimensional tolerance of the cooling nozzles (1).
5. the shooting method of cooling nozzles according to claim 1, which is characterized in that described by the cooling nozzles
(1) after fastening, further include and remove the light-emitting device (2) and the plug (31) of practicing shooting.
6. the shooting method of cooling nozzles according to claim 1, which is characterized in that will be arranged on the cooling spray described
The light beam (21) that the light-emitting device (2) of mouth (1) outlet is sent is irradiated on the target practice plug (31) of interior oil cooling passage (3) fuel feed hole
Before, further include piston (4) jiggering to top dead centre.
7. the shooting method of cooling nozzles according to claim 6, which is characterized in that the luminous point is in target center region bag
Include two target practice positions, the target practice position is respectively that the luminous point is in target center regional center and the luminous point is in target center area
Domain edge.
8. the shooting method of cooling nozzles according to claim 7, which is characterized in that cooling nozzles (1) injection
Oily beam (11) forms oily beam overlay area at interior oil cooling passage (3) fuel feed hole, when the luminous point is in target center regional center
When, the center of circle of the oil beam overlay area is overlapped with the center of circle of interior oil cooling passage (3) fuel feed hole.
9. the shooting method of cooling nozzles according to claim 8, which is characterized in that when the luminous point is in target center region
During edge, the edge inscribe at the edge and interior oil cooling passage (3) fuel feed hole of the oil beam overlay area.
10. the shooting method of cooling nozzles according to claim 9, which is characterized in that the radius in the target center region is
When the luminous point is in target center edges of regions, the center of circle of the oil beam overlay area and interior oil cooling passage (3) fuel feed hole
The distance in the center of circle.
11. according to the shooting method of cooling nozzles according to any one of claims 1 to 10, which is characterized in that described to shine
Device (2) is laser emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451203.2A CN108104935B (en) | 2017-12-27 | 2017-12-27 | Target shooting method of cooling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451203.2A CN108104935B (en) | 2017-12-27 | 2017-12-27 | Target shooting method of cooling nozzle |
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| Publication Number | Publication Date |
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| CN108104935A true CN108104935A (en) | 2018-06-01 |
| CN108104935B CN108104935B (en) | 2020-12-22 |
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ID=62213756
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|---|---|---|---|
| CN201711451203.2A Active CN108104935B (en) | 2017-12-27 | 2017-12-27 | Target shooting method of cooling nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001835A (en) * | 2018-07-27 | 2018-12-14 | 广西玉柴机器股份有限公司 | A kind of engine spray hook dry type shooting method and tooling |
| CN109779732A (en) * | 2019-01-25 | 2019-05-21 | 潍柴动力股份有限公司 | Piston cooling nozzle and its with piston pair inspection method |
| CN112658670A (en) * | 2020-12-02 | 2021-04-16 | 江苏普瑞亚动力科技有限公司 | Laser-assisted calibration process for diesel engine assembly |
| CN114646460A (en) * | 2022-03-16 | 2022-06-21 | 江铃汽车股份有限公司 | Accurate testing device and method for piston cooling spray pipe |
| CN114810323A (en) * | 2022-05-23 | 2022-07-29 | 潍柴动力股份有限公司 | Control method and device for electric control piston cooling nozzle, vehicle and storage medium |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001835A (en) * | 2018-07-27 | 2018-12-14 | 广西玉柴机器股份有限公司 | A kind of engine spray hook dry type shooting method and tooling |
| CN109001835B (en) * | 2018-07-27 | 2023-12-29 | 广西玉柴机器股份有限公司 | Dry type targeting method and tool for engine spray hook |
| CN109779732A (en) * | 2019-01-25 | 2019-05-21 | 潍柴动力股份有限公司 | Piston cooling nozzle and its with piston pair inspection method |
| CN109779732B (en) * | 2019-01-25 | 2020-03-10 | 潍柴动力股份有限公司 | Piston cooling nozzle and method for checking alignment between piston cooling nozzle and piston |
| CN112658670A (en) * | 2020-12-02 | 2021-04-16 | 江苏普瑞亚动力科技有限公司 | Laser-assisted calibration process for diesel engine assembly |
| CN114646460A (en) * | 2022-03-16 | 2022-06-21 | 江铃汽车股份有限公司 | Accurate testing device and method for piston cooling spray pipe |
| CN114646460B (en) * | 2022-03-16 | 2023-07-25 | 江铃汽车股份有限公司 | Accurate testing device and method for piston cooling spray pipe |
| CN114810323A (en) * | 2022-05-23 | 2022-07-29 | 潍柴动力股份有限公司 | Control method and device for electric control piston cooling nozzle, vehicle and storage medium |
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| CN108104935B (en) | 2020-12-22 |
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