CN204458080U - All press combustion piston - Google Patents
All press combustion piston Download PDFInfo
- Publication number
- CN204458080U CN204458080U CN201520077500.5U CN201520077500U CN204458080U CN 204458080 U CN204458080 U CN 204458080U CN 201520077500 U CN201520077500 U CN 201520077500U CN 204458080 U CN204458080 U CN 204458080U
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- chamber
- piston
- center
- pressure
- jun
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a kind of piston, and especially one all presses combustion piston.Pin-and-hole is provided with in skirt section, burning cavity is all pressed to comprise Jun Ya chamber, center, pressure-releasing chamber, Jun Ya chamber, center is arranged on apical head center, at the monosymmetric of Jun Ya chamber, center, four pressure-releasing chambers are set, pressure-releasing chamber one end is communicated with Jun Ya chamber, center, and the other end is tilted to piston side and extends, and is formed all present a theatrical performance as the last item on a programme with apical head plane, the centre bottom in Jun Ya chamber, center is protruding, forms the equal pressure passageway of annular.Said structure adopts special partial-pressure structure, after mixed gas is lighted, expands and impacts; expansive force after lighting decomposes along the pressure-releasing chamber tilted, and fixedly resolve into side pressure, piston locomotivity, side pressure is decomposed by all presenting a theatrical performance as the last item on a programme; side pressure is uniformly dispersed; and enter Jun Ya chamber, center, directed by equal pressure passageway, it is fixing that the directivity of power becomes; so make the evenly fixing of the stressed change of piston; work more stable, and protection piston, extend its working life.
Description
Technical field
The utility model relates to a kind of piston, and especially one all presses combustion piston.
Background technique
Along the reciprocating mechanical parts of cylinder body axis in the cylinder body of the machineries such as stroke piston combustion engine (see internal-combustion engine), compressor and pump.Piston has disc, cylindrical and cylindrical shape 3 kinds of forms.In internal-combustion engine, piston work done under the promotion of high-temperature high-pressure fuel gas.In compressor and pump, piston applies pressure to the fluid in cylinder body under external force, flows to cause fluid and improves its pressure.In oil hydraulic cylinder, piston work done under the promotion of pressure oil.The Closed End of piston bears the pressure of working fluid, and forms firing chamber or minimum cylinder volume with cylinder cap, casing wall.Piston ring or colloid seal circle piston be equipped with in case fluid is leaked.Piston can cylinder iron, the material manufacture such as forged steel, cast steel or aluminum alloy.In internal-combustion engine, in order to reduce quality and the inertial force of piston.
The piston of especially supercharging occasion directly contacts with high-temperature gas, and transient temperature can reach more than 2500K, and therefore, be heated serious, and radiating condition is very poor, so temperature is very high during pistons work, top is up to 600 ~ 700K, and temperature distribution is very uneven; It is very large that piston head bears gas pressure, particularly expansion space stroke pressure is maximum, petrol engine is up to 3 ~ 5MPa, diesel engine is up to 6 ~ 9MPa, this just makes piston produce impact, and the power that combustion explosion produces is uncertain, does not have good directivity, and bears the effect of very uneven pressure; Piston is with very high speed (8 ~ 12m/s) to-and-fro motion in cylinder, and speed is constantly changing, and this generates very large inertial force, make piston be subject to very large additional load, and nondirectional stressing conditions can make piston discontinuity.
Model utility content
The purpose of this utility model is, provides all pressures combustion piston of a kind of uniform force, working stability.
The utility model solves the technological scheme that its technical problem adopts: one all presses combustion piston, comprise head and skirt section, pin-and-hole is provided with in skirt section, be provided with one at apical head and all press burning cavity, burning cavity is all pressed to comprise Jun Ya chamber, center, pressure-releasing chamber, Jun Ya chamber, center is arranged on apical head center, at the monosymmetric of Jun Ya chamber, center, four pressure-releasing chambers are set, pressure-releasing chamber one end is communicated with Jun Ya chamber, center, the other end is tilted to piston side and extends, formed with apical head plane and all present a theatrical performance as the last item on a programme, the centre bottom in Jun Ya chamber, center is protruding, form the equal pressure passageway of annular.
This arranges and adopts special partial-pressure structure, after mixed gas is lighted, expands and impacts; expansive force after lighting decomposes along the pressure-releasing chamber tilted, and fixedly resolve into side pressure, piston locomotivity, side pressure is decomposed by all presenting a theatrical performance as the last item on a programme; side pressure is uniformly dispersed; and enter Jun Ya chamber, center, directed by equal pressure passageway, it is fixing that the directivity of power becomes; so make the evenly fixing of the stressed change of piston; work more stable, and protection piston, extend its working life.
Of the present utility modelly to be set to further: scribble one deck graphite coating in the side in skirt section, to arrange the cooling chamber of a sealing in piston crown inside, cooling intra-bladder instillation cold oil, the position cover of the sheathed piston ring of piston crown has high-nickel austenitic cast iron to inlay circle.
This arranges and adopts inner colded mode, by cooling chamber, enforceable cooling is carried out to piston, make it lower the temperature fast, avoid piston expanded by heating, thus increase frictional force, affect working life, arrange one deck graphite on the surface in skirt section, graphite coating can reduce friction greatly, avoids the expanded by heating that piston is excessive, and high-nickel austenitic cast iron edge circle improves corrosion resistance, hardness, wear resistance, insulating properties, the heat resistance of piston comprehensively, thus extend the working life of piston.
Of the present utility modelly to be set to further: described pin-and-hole is eccentric opening.
This is arranged on pin-and-hole and is arranged to eccentric opening, in reciprocating motion of the pistons, utilizes the characteristic of eccentric opening unbalance stress; effective dispersion stressing conditions; avoid the problem that some the partial compression power in pin-and-hole is excessive, thus protect pin-and-hole, extend the working life of piston.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is the sectional view of the present embodiment;
Fig. 3 is the plane view of the present embodiment.
Embodiment
With reference to figure 1, Fig. 2, Fig. 3 is known, the utility model one all presses combustion piston, comprise head 1 and skirt section 2, pin-and-hole 21 is provided with in skirt section 2, be provided with one on head 1 top and all press burning cavity, burning cavity is all pressed to comprise Jun Ya chamber, center 3, pressure-releasing chamber 4, Jun Ya chamber, center 3 is arranged on center, head 1 top, at the monosymmetric of Jun Ya chamber, center 3, four pressure-releasing chambers 4 are set, pressure-releasing chamber 4 one end is communicated with Jun Ya chamber, center 3, the other end is tilted to piston side and extends, formed with head 1 top plan and all present a theatrical performance as the last item on a programme 5, the centre bottom in Jun Ya chamber, center 3 is protruding, form the equal pressure passageway 31 of annular, one deck graphite coating 22 is scribbled in the side in skirt section 2, the cooling chamber 11 of a sealing is set in piston crown 1 inside, perfusion cold oil in cooling chamber 11, the position cover of the sheathed piston ring of piston crown 1 has high-nickel austenitic cast iron to inlay circle 12, described pin-and-hole 21 is eccentric opening.
Obviously, above-described embodiment is only used to done citing is clearly described, and the restriction not to mode of execution.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still in protection domain of the present utility model.
Claims (3)
1. all press combustion piston for one kind, comprise head and skirt section, pin-and-hole is provided with in skirt section, it is characterized in that: be provided with one at apical head and all press burning cavity, burning cavity is all pressed to comprise Jun Ya chamber, center, pressure-releasing chamber, Jun Ya chamber, center is arranged on apical head center, at the monosymmetric of Jun Ya chamber, center, four pressure-releasing chambers are set, pressure-releasing chamber one end is communicated with Jun Ya chamber, center, the other end is tilted to piston side and extends, formed with apical head plane and all present a theatrical performance as the last item on a programme, the centre bottom in Jun Ya chamber, center is protruding, forms the equal pressure passageway of annular.
2. all press combustion piston according to according to claim 1, it is characterized in that: scribble one deck graphite coating in the side in skirt section, arrange the cooling chamber of a sealing in piston crown inside, cooling intra-bladder instillation cold oil, the position cover of the sheathed piston ring of piston crown has high-nickel austenitic cast iron to inlay circle.
3. according to all pressures combustion piston described in claim 1 or 2, it is characterized in that: described pin-and-hole is eccentric opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077500.5U CN204458080U (en) | 2015-02-04 | 2015-02-04 | All press combustion piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077500.5U CN204458080U (en) | 2015-02-04 | 2015-02-04 | All press combustion piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458080U true CN204458080U (en) | 2015-07-08 |
Family
ID=53664981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520077500.5U Expired - Fee Related CN204458080U (en) | 2015-02-04 | 2015-02-04 | All press combustion piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458080U (en) |
-
2015
- 2015-02-04 CN CN201520077500.5U patent/CN204458080U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20190204 |