CN104458498A - Internally-cooled piston with detachable oil cavity inner core - Google Patents
Internally-cooled piston with detachable oil cavity inner core Download PDFInfo
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- CN104458498A CN104458498A CN201410683988.6A CN201410683988A CN104458498A CN 104458498 A CN104458498 A CN 104458498A CN 201410683988 A CN201410683988 A CN 201410683988A CN 104458498 A CN104458498 A CN 104458498A
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Abstract
The invention discloses an internally-cooled piston with a detachable oil cavity inner core. The piston comprises a piston main body, the inner core and a quartz glass top surface, wherein quartz glass top surface fixing bolts, inner core fixing grooves, an inner core accommodating cavity and a quartz glass top surface accommodating table are arranged at the top of the piston main body; the inner core fixing grooves are formed in the two sides of the inner core accommodating cavity; an oil inlet channel and an oil outlet channel are formed in the piston main body and communicated with the inner core accommodating cavity respectively. A model can be used for related testing of the influence of different oil cavity shapes on oscillation flow heat transfer of the piston, the inner core is fixed to the upper part of the main body model before testing, and the flowing properties of fluids in cavity bodies can be shot through a transparent quartz glass plate on the top surface; by replacing the inner core, the flowing properties of the fluids in the different cavity body shapes can be obtained; through comparison and research, the influence of the different cavity body shapes on the flowing can be obtained; a support is provided for optimized design and application of the internally-cooled piston.
Description
Technical field
The present invention relates to simulation test Piston Model, particularly relate to a kind of interior cold piston of dismantled and assembled oil pocket inner core.
Background technology
Piston is one of core component of diesel engine, and in high speed to-and-fro movement except subject very high mechanical load, its end face also subjects high-temperature fuel gas and periodically heats.Under the harsh environments of high like this mechanical load, high heat load, high running speed, piston becomes one of part be more easily damaged in engine.
With the continuous lifting of diesel engine to power density requirements, interior cold piston obtains increasingly extensive application.In oil pocket, the cooling effect impact of flow and heat transfer process on piston of cold oil is very large, thus has influence on piston even the overall thermal distributions of engine.And the motion state of cold oil is directly subject to the impact of inner-cooling oil reservoir structure in oil pocket.Therefore, the inner-cooling oil reservoir structure of design different structure form, the cold oil moving situation that examination is corresponding, and the heat exchange property of correspondence, significant to Design of Piston Structure
Therefore, in order to probe into the impact that difformity inner-cooling oil recess flows on cold oil, need under piston vibrating condition, simulation test is carried out in the two-phase flow motion in oil pocket.Need this situation of checking various shape inner-cooling oil recess for test, the visual Piston Model of a kind of dismantled and assembled inner-cooling oil recess inner core of specialized designs is also very necessary.
Summary of the invention
The object of the invention is for the test of piston vibrating two-phase simulated flow provides cold piston in a kind of dismantled and assembled oil pocket inner core.
A kind of interior cold piston of dismantled and assembled oil pocket inner core comprises piston main body, inner core and quartz glass end face, described piston main body top is provided with quartz glass end face set bolt, inner core fixed groove, inner core placed cavity and quartz glass end face mounting table, inner core fixed groove is positioned at inner core placed cavity both sides, piston main body inside is provided with oil input channel and oil road, oil input channel and oil road communicate with inner core placed cavity respectively, described inner core to be placed in inner core placed cavity and to coordinate with inner core fixed groove and realizes fixing, described quartz glass end face is placed in quartz glass end face mounting table, and realized fixing by quartz glass end face set bolt, described piston main body has piston pin hole.
Described inner core is provided with inner core oil supply hole, inner core oil outlet, inner core pickup groove, inner chamber, described inner core pickup groove be positioned at inner core both sides, inner chamber is arranged on interior in-core, and inner core oil supply hole, inner core oil outlet are connected with inner chamber respectively; When inner core is assemblied on piston main body, inner core pickup groove matches with inner core fixed groove, and inner core oil supply hole communicates with oil input channel, and inner core oil outlet communicates with oil road.
Described quartz glass end face is provided with quartz glass end face fixed orifice 15, when quartz glass end face is assemblied on piston main body, quartz glass end face set bolt realizes fixing through quartz glass end face fixed orifice and piston main body.
Optionally, described inner chamber is circular ring structure, and cross section is circular.
Optionally, described inner chamber is circular ring structure, and cross section is oval.
Optionally, described inner chamber is right cylinder.
The present invention has the following advantages:
1. when utilizing this Piston Model to test, agent model is installed the inner core of correspondingly-sized, the flow characteristics of cold oil in oil pocket can be observed.When needing the test carrying out different oil pocket shape, only needing the inner core changing different oil pocket shape, changing without the need to whole piston; In like manner, processing also only needs to process inner core, which reduces the test period, for test provides larger dirigibility and convenience;
2. this Piston Model end face is transparency silica glass panel, places high-speed camera up and takes, and can carry out visual research to cold oil flowing;
3. this Piston Model structure is simple, is easy to processing and installs.
Accompanying drawing explanation
Fig. 1 is piston main body sectional view;
Fig. 2 is the plan structure schematic diagram of the interior cold piston of dismantled and assembled oil pocket inner core;
Fig. 3 is sectional view of the present invention;
Fig. 4 is A-A face of the present invention cut-open view;
Fig. 5. the structural representation of inner core of the present invention, wherein a is round section inner chamber, and b is elliptic cross-section inner chamber, and c is cylindrical cavity.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.
This Piston Model mainly comprises agent model and difformity oil pocket inner core, quartz glass end face.
As Figure 1-4, a kind of interior cold piston of dismantled and assembled oil pocket inner core comprises piston main body, inner core and quartz glass end face, described piston main body top is provided with quartz glass end face set bolt 1, inner core fixed groove 5, inner core placed cavity 6 and quartz glass end face mounting table 7, inner core fixed groove 5 is positioned at inner core placed cavity 6 both sides, piston main body inside is provided with oil input channel 3 and oil road 4, oil input channel 3 and oil road 4 communicate with inner core placed cavity 6 respectively, described inner core to be placed in inner core placed cavity 6 and to coordinate with inner core fixed groove 5 and realizes fixing, described quartz glass end face is placed in quartz glass end face mounting table 7, and realized fixing by quartz glass end face set bolt 1, described piston main body has piston pin hole 2.
Described inner core is provided with inner core oil supply hole 11, inner core oil outlet 12, inner core pickup groove 10, inner chamber 9, described inner core pickup groove 10 be positioned at inner core both sides, inner chamber 9 is arranged on interior in-core, and inner core oil supply hole 11, inner core oil outlet 12 are connected with inner chamber 9 respectively; When inner core is assemblied on piston main body, inner core pickup groove 10 matches with inner core fixed groove 5, and inner core oil supply hole 11 communicates with oil input channel 3, and inner core oil outlet 12 communicates with oil road 4.
Described quartz glass end face is provided with quartz glass end face fixed orifice 15, when quartz glass end face is assemblied on piston main body, quartz glass end face set bolt 1 realizes fixing through quartz glass end face fixed orifice 15 and piston main body.
As shown in Figure 5, optionally, described inner chamber 9 is circular ring structure, and cross section is circular.Optionally, described inner chamber 9 is circular ring structure, and cross section is oval.Optionally, described inner chamber 9 is right cylinder.
Principle of work of the present invention and process following (for round section inner chamber inner core):
Before use, need inner core and quartz glass end face to be installed on agent model.Inner core is put into inner core placed cavity 6, the inner core fixed groove 5 that the inner core pickup groove 10 of inner core is aimed on agent model assembles, and inner core can not be rotated at the trial.Now, inner core oil supply hole 11 will align with outlet above the oil input channel 3 of agent model, and inner core oil outlet 12 will align with oil road 4 upper inlet of agent model, to ensure that cold oil passes through cavity smoothly.Quartz glass end face is placed in quartz glass end face mounting table 7, quartz glass end face fixed orifice 15 is alignd with bolt hole 1, is screwed into bolt and fixes.So far, inner core and quartz glass end face install.
When testing, cold oil is sprayed by nozzle, enter the oil input channel 3 of agent model, by flowing out from top outlet after oil input channel 3, because inner core oil supply hole 11 aligns with exporting above oil input channel 3 when mounted, therefore cold oil flows to inner core oil supply hole 11 and arrives in round section inner chamber 9, after vibration, flows out inner core from the inner core oil outlet 12 of the other end.Because inner core oil outlet 12 aligns with oil road 4 upper inlet when mounted, therefore cold oil flows through inner core oil outlet 12 and enters oil road 4, and flows out piston by oil road 4.
Claims (6)
1. the interior cold piston of a dismantled and assembled oil pocket inner core, it is characterized in that comprising piston main body, inner core and quartz glass end face, described piston main body top is provided with quartz glass end face set bolt (1), inner core fixed groove (5), inner core placed cavity (6) and quartz glass end face mounting table (7), inner core fixed groove (5) is positioned at inner core placed cavity (6) both sides, piston main body inside is provided with oil input channel (3) and oil road (4), oil input channel (3) and oil road (4) communicate with inner core placed cavity (6) respectively, described inner core to be placed in inner core placed cavity (6) and to coordinate with inner core fixed groove (5) and realizes fixing, described quartz glass end face is placed in quartz glass end face mounting table (7), and realized fixing by quartz glass end face set bolt (1), described piston main body has piston pin hole (2).
2. the interior cold piston of a kind of dismantled and assembled oil pocket inner core as claimed in claim 1, it is characterized in that described inner core is provided with inner core oil supply hole (11), inner core oil outlet (12), inner core pickup groove (10), inner chamber (9), described inner core pickup groove (10) be positioned at inner core both sides, inner chamber (9) is arranged on interior in-core, and inner core oil supply hole (11), inner core oil outlet (12) are connected with inner chamber (9) respectively; When inner core is assemblied on piston main body, inner core pickup groove (10) matches with inner core fixed groove (5), and inner core oil supply hole (11) communicates with oil input channel (3), and inner core oil outlet (12) communicates with oil road (4).
3. the interior cold piston of a kind of dismantled and assembled oil pocket inner core as claimed in claim 1, it is characterized in that described quartz glass end face is provided with quartz glass end face fixed orifice 15, when quartz glass end face is assemblied on piston main body, quartz glass end face set bolt (1) realizes fixing through quartz glass end face fixed orifice (15) and piston main body.
4. the interior cold piston of a kind of dismantled and assembled oil pocket inner core as claimed in claim 1, is characterized in that described inner chamber (9) is circular ring structure, and cross section is circular.
5. the interior cold piston of a kind of dismantled and assembled oil pocket inner core as claimed in claim 1, is characterized in that described inner chamber (9) is circular ring structure, and cross section is oval.
6. the interior cold piston of a kind of dismantled and assembled oil pocket inner core as claimed in claim 1, is characterized in that described inner chamber (9) is right cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683988.6A CN104458498A (en) | 2014-11-25 | 2014-11-25 | Internally-cooled piston with detachable oil cavity inner core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683988.6A CN104458498A (en) | 2014-11-25 | 2014-11-25 | Internally-cooled piston with detachable oil cavity inner core |
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| Publication Number | Publication Date |
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| CN104458498A true CN104458498A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410683988.6A Pending CN104458498A (en) | 2014-11-25 | 2014-11-25 | Internally-cooled piston with detachable oil cavity inner core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018973A (en) * | 2021-11-08 | 2022-02-08 | 河北科技大学 | Annular piston oil cavity experimental piece for oscillatory heat transfer and visualization experiment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06147004A (en) * | 1992-11-13 | 1994-05-27 | Aisin Seiki Co Ltd | Piston for internal combustion engine |
| US6729291B1 (en) * | 2002-12-06 | 2004-05-04 | Mahle Gmbh | Multipart cooled piston for an internal combustion engine |
| CN101509824A (en) * | 2009-03-13 | 2009-08-19 | 中国船舶重工集团公司第七一一研究所 | Piston shaker cooling simulation test apparatus and test method thereof |
| CN102032991A (en) * | 2010-11-16 | 2011-04-27 | 北京理工大学 | Engine piston oscillating and cooling test device |
-
2014
- 2014-11-25 CN CN201410683988.6A patent/CN104458498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06147004A (en) * | 1992-11-13 | 1994-05-27 | Aisin Seiki Co Ltd | Piston for internal combustion engine |
| US6729291B1 (en) * | 2002-12-06 | 2004-05-04 | Mahle Gmbh | Multipart cooled piston for an internal combustion engine |
| CN101509824A (en) * | 2009-03-13 | 2009-08-19 | 中国船舶重工集团公司第七一一研究所 | Piston shaker cooling simulation test apparatus and test method thereof |
| CN102032991A (en) * | 2010-11-16 | 2011-04-27 | 北京理工大学 | Engine piston oscillating and cooling test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018973A (en) * | 2021-11-08 | 2022-02-08 | 河北科技大学 | Annular piston oil cavity experimental piece for oscillatory heat transfer and visualization experiment |
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Application publication date: 20150325 |