CN208456724U - The piston crown structure of three-cylinder engine - Google Patents
The piston crown structure of three-cylinder engine Download PDFInfo
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- CN208456724U CN208456724U CN201820625486.1U CN201820625486U CN208456724U CN 208456724 U CN208456724 U CN 208456724U CN 201820625486 U CN201820625486 U CN 201820625486U CN 208456724 U CN208456724 U CN 208456724U
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Abstract
The utility model discloses a kind of piston crown structures of three-cylinder engine, including first piston annular groove, second-ring groove and third piston ring groove, there is inner wall and the first lower inner wall on positioned opposite first in first piston annular groove, there is inner wall and the second lower inner wall on positioned opposite second in second-ring groove, with inner wall under inner wall in third positioned opposite and third in third piston ring groove, there is angle between inner wall and the first lower inner wall on described first, there is angle between inner wall and the second lower inner wall on described second, there is between inner wall under inner wall and the third angle in the third.The piston crown structure of the utility model three-cylinder engine, all piston ring grooves are arranged to the angle for having certain, pumping effect of the piston when moving up and down can effectively be inhibited in this way, reduce the consumption of lubricating oil of complete machine, can prevent machine oil from scurrying into combustion chamber after-combustion leads to excessive carbon distribution.
Description
Technical field
The utility model belongs to technical field of engines, specifically, the utility model relates to a kind of three-cylinder engines
Piston crown structure.
Background technique
The consumption of lubricating oil of engine is always that engine one is difficult to the difficulty overcome greatly, and the consumption of lubricating oil of available engine is big
Part is all caused by being pumped as the machine oil of lubrication piston and piston ring by the pumping effect of piston and burning into combustion chamber, this
Sample also results in excessive carbon distribution.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
For a kind of piston crown structure of three-cylinder engine, it is therefore an objective to reduce consumption of lubricating oil.
To achieve the goals above, the technical solution that the utility model is taken are as follows: the piston crown structure of three-cylinder engine,
Including first piston annular groove, second-ring groove and third piston ring groove, have positioned opposite first in first piston annular groove
Upper inner wall and the first lower inner wall, second-ring groove is interior to have inner wall and the second lower inner wall on positioned opposite second
Face has in third positioned opposite inner wall under inner wall and third in third piston ring groove, on described first inner wall and
There is angle between described first lower inner wall, there is angle between inner wall and the second lower inner wall on described second,
There is between inner wall under inner wall and the third angle in the third.
Inner wall on described first, inner wall is parallel in inner wall and the third on described second, under described first
Inner wall is parallel under inner wall, the second lower inner wall and the third.
Angle on described first between inner wall and the first lower inner wall is 0 ° 30 '.
Angle on described second between inner wall and the second lower inner wall is 0 ° 30 '.
Angle in the third under inner wall and the third between inner wall is 0 ° 30 '.
The distance between inner wall is greater than inner wall and institute on described second on inner wall and described second on described first
State the distance between inner wall in third.
The piston crown structure of the utility model three-cylinder engine, all piston ring grooves are arranged to the angle for having certain
Degree can effectively inhibit pumping effect of the piston when moving up and down in this way, reduce the consumption of lubricating oil of complete machine, can prevent
Machine oil, which scurries into combustion chamber after-combustion, leads to excessive carbon distribution.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the cross-sectional view of the piston crown structure of the utility model three-cylinder engine；
Fig. 2 is enlarged drawing at A in Fig. 1；
In the figure, it is marked as inner wall on 1, first；2, the first lower inner wall；3, inner wall on second；4, the second lower inner wall
Face；5, inner wall in third；6, inner wall under third；7, face-port；8, key seat；9, main thrust side skirt wall；10, secondary thrust side skirt
Wall；11, the first inner headed face；12, the second inner headed face；13, third inner headed face；14, the first reinforcing rib；15, the second reinforcing rib；16,
Third reinforcing rib；17, weight loss groove；18, concave inward structure；19, long axis；20, short axle；21, pin hole.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation, it is therefore an objective to help those skilled in the art to the design of the utility model, technical solution have it is more complete, accurate and
Deep understanding, and facilitate its implementation.
As shown in Figure 1, the utility model provides a kind of piston crown structure of three-cylinder engine, including first piston ring
Slot, second-ring groove and third piston ring groove, first piston annular groove is interior to have inner wall 1 and first on positioned opposite first
Lower inner wall 2, second-ring groove is interior to have inner wall 3 and the second lower inner wall 4, third piston ring on positioned opposite second
There is in slot in third positioned opposite inner wall 6 under inner wall 5 and third, on first inner wall 1 and the first lower inner wall 2 it
Between there is angle, there is angle between inner wall 3 and the second lower inner wall 4 on second, in third under inner wall 5 and third in
There is angle between wall surface 6.
Specifically, as depicted in figs. 1 and 2, first piston annular groove, second-ring groove and third piston ring groove are in work
It is used for along the annular groove entirely circumferentially extended, first piston annular groove and second-ring groove on the periphery of plug head structure
Compression ring is installed, primarily serves the effect of sealing and heat transfer, for installing oil ring in third piston ring groove, first piston annular groove,
Second-ring groove and third piston ring groove are set gradually in piston crown structure for the axial direction along piston crown structure, and first
Piston ring groove is located proximate to top land, and third piston ring groove is located proximate to piston skirt.
As depicted in figs. 1 and 2, inner wall 5 is parallel in inner wall 3 and third on inner wall 1, second on first, and first
Inner wall 6 is parallel under the lower inner wall 4 of lower inner wall 2, second and third.Inner wall 3, third on inner wall 1, second on first
Inner wall is the lesser circular conical surface of taper under the lower inner wall 4 of the lower inner wall 2, second of upper inner wall 5, first and third, on first
Inner wall 3 on inner wall 1, second, inner wall is under the lower inner wall 4 of the lower inner wall 2, second of inner wall 5, first and third in third
It is coaxially disposed and coaxial with piston crown structure.First piston annular groove also has the first inner headed face 11, inner wall 1 and on first
A centre bore is once all had at the center of inner wall 2, the hole of the centre bore of inner wall 1 and the first lower inner wall 2 on first
Diameter size is identical and coaxial, and the first inner headed face 11 is located on first in the centre bore of inner wall 1 and the first lower inner wall 2, and first
It is the circular arc line with certain radian that inner headed face 11, which is anchor ring and its bus, interior on the top edge and first of the first inner headed face 11
The inward flange (edge at diameter minimum) of wall surface 1 connects, the inner edge of the lower edge of the first inner headed face 11 and the first lower inner wall 2
Edge (edge at diameter minimum) connects, the outer edge (side of diameter maximum of inner wall 1 and the first lower inner wall 2 on first
Edge) it is connect with the periphery of piston crown structure.Second-ring groove also has the second inner headed face 12,3 He of inner wall on second
A centre bore is all had at the center of second lower inner wall 4, the centre bore of inner wall 3 and the second lower inner wall 4 on second
Pore size is identical and coaxial, and the second inner headed face 12 is located on second in the centre bore of inner wall 3 and the second lower inner wall 4, the
It is the circular arc line with certain radian that two inner headed faces 12, which are anchor ring and its bus, on the top edge and second of the second inner headed face 12
The inward flange (edge at diameter minimum) of inner wall 3 connects, inner wall 4 under the lower edge of the second inner headed face 12 and second
Inward flange (edge at diameter minimum) connects, outer edge (the diameter maximum of inner wall 3 and the second lower inner wall 4 on second
Edge) connect with the periphery of piston crown structure.Third piston ring groove also has third inner headed face 13, inner wall in third
5 and third under inner wall 6 center at all have a centre bore, in third under inner wall 5 and third inner wall 6 centre bore
Pore size it is identical and coaxial, third inner headed face 13 is located in third under inner wall 5 and third in the centre bore of inner wall 6,
Third inner headed face 13 is anchor ring and its bus is the circular arc line with certain radian, the top edge of third inner headed face 13 and third
The inward flange (edge at diameter minimum) of upper inner wall 5 connects, inner wall 6 under the lower edge and third of third inner headed face 13
Inward flange (edge at diameter minimum) connection, in third under inner wall 5 and third inner wall 6 outer edge (diameter maximum
Edge) connect with the periphery of piston crown structure.
As depicted in figs. 1 and 2, preferably, the angle on first between inner wall 1 and the first lower inner wall 2 is 0 °
30 ' (i.e. 0.5 °), the vertical range on first between inner wall 1 and the first lower inner wall 2 are from close to piston crown structure
Start to be gradually reduced along the axial location of piston crown structure being radially orientated far from piston crown structure at axial location,
Vertical range on i.e. first between the inward flange of inner wall 1 and the inward flange of the first lower inner wall 2 is greater than inner wall 1 on first
Outer edge and the first lower inner wall 2 outer edge between vertical range, and the outer edge of inner wall 1 and work on first
It fills in the vertical range between top surface and is greater than vertical range on first between the inward flange and piston-top surface of inner wall 1, under first
Vertical range between the outer edge and piston-top surface of inner wall 2 less than the first lower inner wall 2 inward flange and piston-top surface it
Between vertical range, the piston ring being mounted in first piston annular groove thickness (thickness refer to piston ring upper surface and under
Vertical range between surface) less than first on vertical range between inner wall 1 and the first lower inner wall 2, thus in piston
On into moving process, there is gap, which, which forms, accommodates machine oil between the lower surface of piston ring and the first lower inner wall 2
Oil storage space avoids machine oil from being squeezed into combustion chamber and burn, equally during piston moves down, the upper surface of piston ring
With first on there is between inner wall 1 gap, which forms the oil storage space for accommodating machine oil, machine oil is avoided to be squeezed into combustion chamber
In and burn.That is, first piston annular groove can be formed between piston ring accommodates machine oil during piston up-down
Oil storage space, can effectively inhibit piston move up and down when pumping effect, avoid machine oil be squeezed into combustion chamber and
Burning, to reduce the consumption of machine oil, and the angle on first between inner wall 1 and the first lower inner wall 2 is arranged to
0.5 °, effect is best.
As depicted in figs. 1 and 2, preferably, the also angle on second between inner wall 3 and the second lower inner wall 4 is
0 ° 30 ' (i.e. 0.5 °), the vertical range on second between inner wall 3 and the second lower inner wall 4 is from close to piston crown structure
Axial location at start to be gradually reduced along the axial location of piston crown structure being radially orientated far from piston crown structure
, i.e., the vertical range on second between the inward flange of inner wall 3 and the inward flange of the second lower inner wall 4 is greater than inner wall on second
Vertical range between the outer edge in face 3 and the outer edge of the second lower inner wall 4, and on second the outer edge of inner wall 3 with
Vertical range between piston-top surface is greater than the vertical range on second between the inward flange and piston-top surface of inner wall 3, and second
Vertical range between the outer edge and piston-top surface of lower inner wall 4 descends the inward flange and piston-top surface of inner wall 4 less than second
Between vertical range, the piston ring being mounted in second-ring groove thickness (thickness refer to piston ring upper surface and
Vertical range between lower surface) less than second on vertical range between inner wall 3 and the second lower inner wall 4, thus in work
Beyond the Great Wall into moving process, there is gap between the lower surface of piston ring and the second lower inner wall 4, which, which forms, accommodates machine oil
Oil storage space, avoid machine oil from being squeezed into combustion chamber and burn, equally during piston moves down, the upper table of piston ring
There is gap, which forms the oil storage space for accommodating machine oil, machine oil is avoided to be squeezed into burning on face and second between inner wall 3
It burns in room.That is, second-ring groove can be formed between piston ring accommodates machine oil during piston up-down
Oil storage space, can effectively inhibit piston move up and down when pumping effect, avoid machine oil from being squeezed into combustion chamber
And burn, to reduce the consumption of machine oil, and the angle on second between inner wall 3 and the second lower inner wall 4 is arranged to
0.5 °, effect is best.
As depicted in figs. 1 and 2, preferably, the also angle in third under inner wall 5 and third between inner wall 6 is
0 ° 30 ' (i.e. 0.5 °), the vertical range in third under inner wall 5 and third between inner wall 6 is from close to piston crown structure
Axial location at start to be gradually reduced along the axial location of piston crown structure being radially orientated far from piston crown structure
, i.e., the vertical range in third under the inward flange of inner wall 5 and third between the inward flange of inner wall 6 is greater than inner wall in third
Vertical range under the outer edge and third in face 5 between the outer edge of inner wall 6, and in third the outer edge of inner wall 5 with
Vertical range between piston-top surface is greater than the vertical range in third between the inward flange and piston-top surface of inner wall 5, third
Vertical range between the outer edge and piston-top surface of lower inner wall 6 is less than the inward flange and piston-top surface of inner wall 6 under third
Between vertical range, the piston ring being mounted in third piston ring groove thickness (thickness refer to piston ring upper surface and
Vertical range between lower surface) less than the vertical range between inner wall 6 under inner wall 5 in third and third, thus in work
Beyond the Great Wall into moving process, there is gap under the lower surface of piston ring and third between inner wall 6, which, which forms, accommodates machine oil
Oil storage space, avoid machine oil from being squeezed into combustion chamber and burn, equally during piston moves down, the upper table of piston ring
There is gap, which forms the oil storage space for accommodating machine oil, machine oil is avoided to be squeezed into burning on face and third between inner wall 5
It burns in room.That is, third piston ring groove can be formed between piston ring accommodates machine oil during piston up-down
Oil storage space, can effectively inhibit piston move up and down when pumping effect, avoid machine oil from being squeezed into combustion chamber
And burn, to reduce the consumption of machine oil, and the angle in third under inner wall 5 and third between inner wall 6 is arranged to
0.5 °, effect is best.
As depicted in figs. 1 and 2, the distance between inner wall 3 is greater than inner wall on second on inner wall 1 and second on first
The distance between 3 and inner wall 5 in third.
The utility model is exemplarily described in conjunction with attached drawing above.Obviously, the utility model implements not
It is limited by aforesaid way.As long as the various unsubstantialities that the method concept and technical solution that use the utility model carry out
Improvement；Or it is not improved, the above-mentioned conception and technical scheme of the utility model are directly applied into other occasions, at this
Within the protection scope of utility model.
Claims (6)
1. the piston crown structure of three-cylinder engine, including first piston annular groove, second-ring groove and third piston ring groove, the
There is inner wall and the first lower inner wall on positioned opposite first in one piston ring groove, there is opposite cloth in second-ring groove
Inner wall and the second lower inner wall on second set, third piston ring groove is interior to have inner wall and third in third positioned opposite
Lower inner wall, first piston annular groove, second-ring groove and third piston ring groove are the edge on the periphery of piston crown structure
Annular groove and first piston annular groove, second-ring groove and the third piston ring groove entirely circumferentially extended is in piston crown structure
The upper axial direction for along piston crown structure is set gradually, and first piston annular groove is located proximate to top land, third piston ring groove
Be located proximate to piston skirt, it is characterised in that: there is angle between inner wall and the first lower inner wall on described first,
There is angle between inner wall and the second lower inner wall on described second, in the third under inner wall and the third in
There is angle between wall surface, inner wall on first, inner wall on second, inner wall in third, the first lower inner wall, second it is lower in
Inner wall is circular conical surface under wall surface and third.
2. the piston crown structure of three-cylinder engine according to claim 1, it is characterised in that: inner wall on described first
Face, inner wall is parallel in inner wall and the third on described second, the described first lower inner wall, the second lower inner wall
It is parallel with inner wall under the third.
3. the piston crown structure of three-cylinder engine according to claim 1, it is characterised in that: inner wall on described first
And the angle under described first between inner wall is 0 ° 30 '.
4. the piston crown structure of three-cylinder engine according to claim 3, it is characterised in that: inner wall on described second
And the angle under described second between inner wall is 0 ° 30 '.
5. the piston crown structure of three-cylinder engine according to claim 4, it is characterised in that: inner wall in the third
And the angle under the third between inner wall is 0 ° 30 '.
6. the piston crown structure of three-cylinder engine according to any one of claims 1 to 5, it is characterised in that: described first
On upper inner wall and described second the distance between inner wall be greater than on described second in inner wall and the third inner wall it
Between distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625486.1U CN208456724U (en) | 2018-04-28 | 2018-04-28 | The piston crown structure of three-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625486.1U CN208456724U (en) | 2018-04-28 | 2018-04-28 | The piston crown structure of three-cylinder engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208456724U true CN208456724U (en) | 2019-02-01 |
Family
ID=65151577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820625486.1U Active CN208456724U (en) | 2018-04-28 | 2018-04-28 | The piston crown structure of three-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208456724U (en) |
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2018
- 2018-04-28 CN CN201820625486.1U patent/CN208456724U/en active Active
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