CN202012408U - Piston combustion chamber of internal combustion engine - Google Patents
Piston combustion chamber of internal combustion engine Download PDFInfo
- Publication number
- CN202012408U CN202012408U CN 201120074035 CN201120074035U CN202012408U CN 202012408 U CN202012408 U CN 202012408U CN 201120074035 CN201120074035 CN 201120074035 CN 201120074035 U CN201120074035 U CN 201120074035U CN 202012408 U CN202012408 U CN 202012408U
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- China
- Prior art keywords
- internal combustion
- combustion engine
- zone
- firing chamber
- piston
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Abstract
The utility model relates to a piston combustion chamber of an internal combustion engine. The piston combustion chamber of the internal combustion engine comprises a throat orifice area, wherein the end part of the throat orifice area is a remelting area; and the edge of the longitudinal section of the remelting area comprises a section of arc-shaped part protruding outwards and two sections of rectilinear parts which are in smooth transition with two ends of the arc-shaped part. The piston combustion chamber of the internal combustion engine ensures the structural size and the strength of the remelting area, so that the aim of strengthening the weakest part of a piston, namely the throat orifice of the combustion chamber, is fulfilled, and the requirement on high power density of an engine is met.
Description
Technical field
The utility model relates to a kind of field of internal combustion engine, especially a kind of internal combustion engine firing chamber.
Background technique
Aluminium piston of IC engine is generally forging type at present, and the casting process cooling is relatively poor, and bigger block primary silicon and shaft-like primary silicon tissue are arranged in the tissue, and comparatively thick primary silicon is the key factor that causes the piston combustion bowl aditus laryngis to lose efficacy.For the refinement primary silicon has been taked multiple refinement measure in casting process, as methods such as employing grain fefiner and quickening coolings, yet because piston combustion bowl in casting process, is the last position of cooling off, so effect is undesirable.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easy to use, guarantee the physical dimension and the intensity at remelting position, weak part---combustion chamber throat reaches the purpose of reinforcement thereby make piston, adapts to the internal combustion engine firing chamber of motor high power density development need.
For achieving the above object, the utility model adopts following technical proposals:
A kind of internal combustion engine firing chamber, comprise the aditus laryngis zone, the end in described aditus laryngis zone is the reflow zone territory, and the described remelting zone vertically edge of section comprises one section curved portions of outwards protruding, and two sections line parts that are connected with described curved portions two ends rounding off.
Described curved portions radius is 1～20mm.
Described two line part length are 0.5～15mm.
The described remelting zone vertically height of section is 1～12mm.
Described remelting zone is seen as the closed circular annular from overlooking direction; Or be that the width of described each discontinuous arc area is 10～100 mm along two discontinuous arc areas of pin-and-hole axis top symmetry; Or for having the ring of opening, the width of opening is 2～150 mm, and the position range α of the relative piston pin hole azimuth axis of the ring of opening is 0～360 °.。
The utility model discloses a kind of piston combustion bowl aditus laryngis (firing chamber bore) remelting hardening structure.The material of piston is aluminum alloy, magnesium alloy, using modes such as laser, argon arc welding, induction, gas welding that remelting is carried out in part, combustion chamber throat zone handles, to obtain the alloy structure of more refinement, remelting is handled back aluminum alloy microstructure significant variation has been taken place, Si organizes Eutectic Silicon in Al-Si Cast Alloys to be dispersed in the matrix of Al by bigger block primary silicon and shaft-like primary silicon structural transformation for very tiny block primary silicon and point-like, and comparatively thick primary silicon is the key factor that causes the piston combustion bowl aditus laryngis to lose efficacy.On the other hand, the stress that produces in the condensation process makes the Al matrix produce deformation, and dislocation density increases, and forms born of the same parents' mesh network structure, utilizes the anti-fatigue performance that improves aluminum alloy material thereby have.The reflow zone micro-penetration hardness be about be approximately piston only hardness 1.3-1.9 doubly.Between strengthened layer and base material, there is simultaneously heat affected zone (metallurgy combination layer), thereby the gradient that has formed hardness between base material and strengthened layer distributes, this helps improving the anti-fatigue ability that aluminum alloy material is the aditus laryngis position, reaches the purpose that improves the piston integral fatigue life.
The utility model has guaranteed the physical dimension and the intensity at remelting position, and weak part---combustion chamber throat reaches the purpose of reinforcement thereby make piston, adapts to the needs of motor high power density development.
Description of drawings
Fig. 1 is the position view of the utility model in piston combustion bowl;
Fig. 2 is an I part enlarged view among Fig. 1;
Fig. 3 is embodiment's 1 plan structure schematic representation;
Fig. 4 is embodiment's 2 plan structure schematic representation;
Fig. 5 is embodiment's 3 plan structure schematic representation;
1. aditus laryngis zones wherein, 2. remelting zone, 3. curved portions, 4. line part, 5 openings.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment 1: as Figure 1-3, a kind of internal combustion engine firing chamber, comprise aditus laryngis zone 1, the end in described aditus laryngis zone 1 is reflow zone territory 2, the edge of described remelting zone 2 vertical sections comprises one section curved portions 3 of outwards protruding, and two sections line parts 4 that are connected with described curved portions 3 two ends rounding ofves.
Described curved portions 3 radius Rs are 1～20mm.
Described two line parts, 4 length
l 1 , l 2 Be 0.5～15mm.
The height L of described remelting zone 2 vertical sections is 1～12mm.
Described remelting zone 2 is seen as the closed circular annular from overlooking direction.
Embodiment 2: shown in Fig. 1,2,4, a kind of internal combustion engine firing chamber, comprise aditus laryngis zone 1, the end in described aditus laryngis zone 1 is reflow zone territory 2, the edge of described remelting zone 2 vertical sections comprises one section curved portions 3 of outwards protruding, and two sections line parts 4 that are connected with described curved portions 3 two ends rounding ofves.
Described curved portions 3 radius Rs are 1～20mm.
Described two line parts, 4 length
l 1 , l 2 Be 0.5～15mm.
The height L of described remelting zone 2 vertical sections is 1～12mm.
Described remelting zone 2 is seen as along two discontinuous arc areas of pin-and-hole axis top symmetry from overlooking direction, and the width B of described each discontinuous arc area is 10～100 mm.
Embodiment 3: shown in Fig. 1,2,5, a kind of internal combustion engine firing chamber, comprise aditus laryngis zone 1, the end in described aditus laryngis zone 1 is reflow zone territory 2, the edge of described remelting zone 2 vertical sections comprises one section curved portions 3 of outwards protruding, and two sections line parts 4 that are connected with described curved portions 3 two ends rounding ofves.
Described curved portions 3 radius Rs are 1～20mm.
Described two line parts, 4 length
l 1 , l 2 Be 0.5～15mm.
The height L of described remelting zone 2 vertical sections is 1～12mm.
Described remelting zone 2 is seen as the ring with opening 5 from overlooking direction, and the width C of opening 5 is 2～150 mm, and the position range α of the relative piston pin hole azimuth axis of the ring of opening is 0～360 °.
Claims (5)
1. internal combustion engine firing chamber, comprise the aditus laryngis zone, it is characterized in that: the end in described aditus laryngis zone is the reflow zone territory, and the described remelting zone vertically edge of section comprises one section curved portions of outwards protruding, and two sections line parts that are connected with described curved portions two ends rounding off.
2. internal combustion engine according to claim 1 firing chamber is characterized in that: described curved portions radius is 1～20mm.
3. internal combustion engine according to claim 1 firing chamber is characterized in that: described two line part length are 0.5～15mm.
4. internal combustion engine according to claim 1 firing chamber is characterized in that: the described remelting zone vertically height of section is 1～12mm.
5. internal combustion engine according to claim 1 firing chamber is characterized in that: described remelting zone is seen as the closed circular annular from overlooking direction; Or be that the width of described each discontinuous arc area is 10～100 mm along two discontinuous arc areas of pin-and-hole axis top symmetry; Or for having the ring of opening, the width of opening is 2～150 mm, and the position range α of the relative piston pin hole azimuth axis of the ring of opening is 0～360 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120074035 CN202012408U (en) | 2011-03-21 | 2011-03-21 | Piston combustion chamber of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120074035 CN202012408U (en) | 2011-03-21 | 2011-03-21 | Piston combustion chamber of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012408U true CN202012408U (en) | 2011-10-19 |
Family
ID=44783020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120074035 Expired - Fee Related CN202012408U (en) | 2011-03-21 | 2011-03-21 | Piston combustion chamber of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202012408U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012212791A1 (en) | 2012-07-20 | 2014-01-23 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine |
| CN104955612A (en) * | 2013-01-31 | 2015-09-30 | 西门子能量股份有限公司 | Method of laser re-melt repair of superalloys using flux |
| CN105458507A (en) * | 2015-12-23 | 2016-04-06 | 中国石油天然气股份有限公司 | Reinforcing method for pipeline loop-weld joint |
-
2011
- 2011-03-21 CN CN 201120074035 patent/CN202012408U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012212791A1 (en) | 2012-07-20 | 2014-01-23 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine |
| WO2014012826A1 (en) | 2012-07-20 | 2014-01-23 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine |
| CN104507635A (en) * | 2012-07-20 | 2015-04-08 | 菲特尔莫古纽伦堡有限公司 | Method for producing a piston for an internal combustion engine |
| US10252366B2 (en) | 2012-07-20 | 2019-04-09 | Federal-Mogul Nurnberg Gmbh | Method for producing a piston for an internal combustion engine |
| CN104955612A (en) * | 2013-01-31 | 2015-09-30 | 西门子能量股份有限公司 | Method of laser re-melt repair of superalloys using flux |
| CN105458507A (en) * | 2015-12-23 | 2016-04-06 | 中国石油天然气股份有限公司 | Reinforcing method for pipeline loop-weld joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20120321 |