CN205858507U - The piston of electromotor - Google Patents
The piston of electromotor Download PDFInfo
- Publication number
- CN205858507U CN205858507U CN201620836444.3U CN201620836444U CN205858507U CN 205858507 U CN205858507 U CN 205858507U CN 201620836444 U CN201620836444 U CN 201620836444U CN 205858507 U CN205858507 U CN 205858507U
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- Prior art keywords
- piston
- electromotor
- combustor
- improve
- air
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Abstract
The utility model discloses the piston of a kind of electromotor, the head of piston is provided with combustor, on the end face of piston, is provided with at least one protruding between top edge and the outward flange of piston-top surface of combustor.The application structure by optimization piston end face, the crowded stream of air-flow, strength of turbulence near cylinder is improve in the case of and air-fuel mixture effect constant at holding inlet structure is constant, increase the tubulence energy of gas in the jar, flame transmission speed is improve in delay period and main combustion period, shorten the duration of burning, thus improve the thermal efficiency of electromotor, improve engine performance, and reduce unburned hydrocarbons discharge；Further, this structure optimization mode is applicable to piston and the combustor of different structure form.
Description
Technical field
This utility model relates to engine art, particularly to the piston of a kind of electromotor.
Background technology
Along with the Abgasgesetz increasingly stringent to unburned hydrocarbons emission limit, and Fuel Consumption becomes industry
The emphasis paid close attention to, reduces the discharge of electromotor unburned hydrocarbons and Fuel Consumption is particularly important, can send out by optimizing at present
The mode of motivation in-cylinder combustion realizes this target.Piston is one of electromotor most important burning parts, its version shadow
The flow distribution of air-flow in sound engine cylinder, thus affect engine combustion.By piston combustion chamber shape, structure are carried out excellent
Change design, can reasonably organize In Cylinder Flow, improve the average tubulence energy of air-flow, improve rate of flame propagation, increase
Burn rate, improves engine performance.
Electromotor realizes the motion of air-flow in cylinder by the coupling of air intake duct and piston combustion chamber structure.Air-flow in cylinder
Liquid form is eddy current and squeezes stream, and at engine induction stroke and compression initial stage, in cylinder, the liquid form of air-flow is eddy current, in pressure
In contracting later stage cylinder, the liquid form of air-flow is eddy current and squeezes stream, wherein squeezes stream at compression top center the strongest.Eddy current is by helical intake
Formed, form turbulent flow in compression process, along with the upper shifting eddy current of piston gradually dissipates；Squeeze stream and clamp-oned piston combustion indoor by air-flow
Formed, and form inverse crowded stream along combustion chamber wall surface, and form turbulent flow.Therefore tubulence energy intensity has with eddy current and crowded intensity of flow
Close.In the case of inlet structure is constant, optimization piston chamber structure can be passed through, improve near cylinder
The crowded intensity of flow of gas, increases gas disturbance, increases the tubulence energy of gas in the jar, improves flame transmission speed, thus improves
The thermal efficiency of electromotor, improves engine performance and reduces unburned hydrocarbons discharge.
As Figure 1-3, the head of piston is provided with combustor 2 to the piston of the electromotor of prior art, and the end face 1 of piston is
Plane, therefore squeezes stream and can not be quickly converted to turbulent flow in delay period and main combustion period, in cylinder, the Turbulent Kinetic of air-flow is little, the biography of flame
Broadcast speed slow, so that engine thermal efficiency reduces, be unfavorable for the performance of electromotor, improve QI consumed and unburned hydrocarbons
Discharge.
The information being disclosed in this background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or imply in any form this information structure existing well known to persons skilled in the art
Technology.
Utility model content
The purpose of this utility model is to provide the piston of a kind of electromotor, thus overcomes air-flow in existing engine cylinder
Turbulent Kinetic little, flame transmission speed is slow, QI consumed and the high shortcoming of unburned hydrocarbons discharge.
For achieving the above object, this utility model provides the piston of a kind of electromotor, and the head of piston is provided with combustor,
On the end face of piston, it is provided with at least one between top edge and the outward flange of piston-top surface of combustor protruding.
Preferably, in technique scheme, it is provided with at least between top edge and the outward flange of piston-top surface of combustor
Two radially arranged convex sets, each convex sets circumferentially arranges.
Preferably, in technique scheme, convex sets is an annular projection.
Preferably, in technique scheme, convex sets includes the spaced projection of at least two.
Preferably, in technique scheme, protruding cross section is rectangle, square, circular or polygon.
Preferably, in technique scheme, between top edge and the outward flange of piston-top surface of combustor, it is provided with one
The convex sets circumferentially arranged.
Preferably, in technique scheme, convex sets is an annular projection.
Preferably, in technique scheme, convex sets includes the spaced projection of at least two.
Preferably, in technique scheme, protruding cross section is rectangle, square, circular or polygon.
Compared with prior art, this utility model has the advantages that
The application is by the structure of optimization piston end face, and inlet structure is constant and air-fuel mixture effect is constant keeping
In the case of improve the crowded stream of air-flow, strength of turbulence near cylinder, increase the tubulence energy of gas in the jar, stagnant
Improve flame transmission speed in combustion phase and main combustion period, shorten the duration of burning, thus improve the thermal effect of electromotor
Rate, improves engine performance, and reduces unburned hydrocarbons discharge；Further, this structure optimization mode is applicable to not
Piston and combustor with version.
Accompanying drawing explanation
Fig. 1 is the front view of the piston of prior art.
Fig. 2 is the top view of the piston of prior art.
Fig. 3 is the axonometric chart of the piston of prior art.
Fig. 4 is the front view according to piston of the present utility model.
Fig. 5 is the top view according to piston of the present utility model.
Fig. 6 is the three-dimensional cutaway view according to piston of the present utility model.
Fig. 7 is the axonometric chart according to piston of the present utility model.
Fig. 8 is the comparison diagram of average tubulence energy in the air-flow of cylinder in prior art and the application.
Fig. 9 is the graph of a relation of tubulence energy and flame propagation velocity.
Main Reference Numerals illustrates:
1-piston-top surface, 2-combustor, 3-is protruding.
Detailed description of the invention
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is described in detail, it is to be understood that this practicality
Novel protection domain is not limited by detailed description of the invention.
Explicitly indicating that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or it becomes
Change and such as " comprising " or " including " etc. will be understood to comprise stated element or ingredient, and do not get rid of other yuan
Part or other ingredient.
As shown in figs. 4-7, it is provided with combustor 2, piston top according to the head of the piston of this utility model detailed description of the invention
On face 1, between top edge and the outward flange of piston-top surface 1 of combustor 2, be provided with that at least one is protruding, protruding inward flange with
It is respectively provided with a certain distance between the top edge of combustor and between the outward flange of projection and the outward flange of end face.
As an embodiment, projection can be with piston integrally casting or be welded on piston-top surface.
Embodiment 1
It is provided with a convex sets circumferentially arranged between top edge and the outward flange of piston-top surface 1 of combustor 2.
As an embodiment, as shown in figs. 4-7, this convex sets is an annular projection 3, and this annular projection 3 can be with
Combustor 2 is concentric, it is also possible to eccentric relative to combustor 2.In this embodiment, the cross section of annular projection 3 can be rule
Shape, as being rectangle, square, circular or polygon etc., it is also possible to is irregularly shaped.This annular projection 3 can more lean on
The top edge of nearly combustor or the outward flange closer to piston-top surface 1.
As another embodiment, this convex sets includes the spaced projection of at least two, and such as, this convex sets is permissible
Being uniformly distributed in combustor 2 around, form an annulus, this annulus can be concentric with combustor 2, it is also possible to relative to combustion
Burn room 2 eccentric.In this embodiment, protruding cross section can be regular shape, as being rectangle, square, circular or many
Limit shape etc., it is also possible to be irregularly shaped.
Embodiment 2
It is provided with, between top edge and the outward flange of piston-top surface 1 of combustor 2, the projection that at least two is radially arranged
Group, each convex sets circumferentially arranges.
As an embodiment, between top edge and the outward flange of piston-top surface 1 of combustor 2, it is provided with at least two ring
Shape is protruding, and this annular projection can be concentric with combustor 2, it is also possible to eccentric relative to combustor 2.In this embodiment, ring-type
Protruding cross section can be regular shape, as being rectangle, square, circular or polygon etc., it is also possible to be irregular shape
Shape.
As another embodiment, each convex sets can include the projection that at least two circumferentially arranges, for example, it is possible to
Being uniformly distributed in combustor 2 around, form an annulus, this annulus can be concentric with combustor 2, it is also possible to relative to combustion
Burn room 2 eccentric.The circumferential position of the respective bump in two groups can identical or mutually stagger.In this embodiment, each projection
Cross section can be regular shape, as being rectangle, square, circular or polygon etc., it is also possible to be irregularly shaped.
As another embodiment, often the projection in group can be arranged in combustor 2 around unevenly.
Fig. 8 is comparison diagram (the In-Cylinder Flow calculating of the average tubulence energy of air-flow in cylinder in prior art and the application
Result).As can be seen from Figure 7, the end face 1 of piston is processed bulge-structure and can improve the average turbulence of air-flow in cylinder to a certain extent
Energy.Fig. 9 is the graph of a relation of tubulence energy and flame propagation velocity, and tubulence energy is the biggest, and flame propagation velocity is the fastest.Therefore, at piston
End face 1 on process bulge-structure can improve flame transmission speed.
The application is by the structure of optimization piston end face, and inlet structure is constant and air-fuel mixture effect is constant keeping
In the case of improve the crowded stream of air-flow, strength of turbulence near cylinder, increase the tubulence energy of gas in the jar, stagnant
Improve flame transmission speed in combustion phase and main combustion period, shorten the duration of burning, thus improve the thermal effect of electromotor
Rate, improves engine performance, and reduces unburned hydrocarbons discharge；Further, this structure optimization mode is applicable to not
Piston and combustor with version.
The aforementioned description to specific illustrative embodiment of the present utility model illustrates that and the purpose of illustration.These
Describe and be not wishing to be defined to this utility model disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
A lot of changes and change.The purpose selected exemplary embodiment and describe is to explain certain principles of the present utility model
And reality application, so that those skilled in the art is capable of and utilizes various different example of the present utility model
Property embodiment and various different selection and change.Scope of the present utility model be intended to by claims and etc. similar shape
Formula is limited.
Claims (9)
1. a piston for electromotor, the head of described piston is provided with combustor, it is characterised in that on the end face of described piston,
At least one it is provided with protruding between top edge and the outward flange of piston-top surface of described combustor.
The piston of electromotor the most according to claim 1, it is characterised in that the top edge of described combustor and described work
Being provided with, between the outward flange of plug end face, the convex sets that at least two is radially arranged, each convex sets circumferentially arranges.
The piston of electromotor the most according to claim 2, it is characterised in that described convex sets is an annular projection.
The piston of electromotor the most according to claim 2, it is characterised in that described convex sets includes that at least two interval sets
The projection put.
5. according to the piston of the electromotor described in claim 3 or 4, it is characterised in that the cross section of described projection is rectangle,
Square, circular or polygon.
The piston of electromotor the most according to claim 1, it is characterised in that the top edge of described combustor and described work
It is provided with a convex sets circumferentially arranged between the outward flange of plug end face.
The piston of electromotor the most according to claim 6, it is characterised in that described convex sets is an annular projection.
The piston of electromotor the most according to claim 6, it is characterised in that described convex sets includes that at least two interval sets
The projection put.
9. according to the piston of the electromotor described in claim 7 or 8, it is characterised in that the cross section of described projection is rectangle,
Square, circular or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836444.3U CN205858507U (en) | 2016-08-04 | 2016-08-04 | The piston of electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836444.3U CN205858507U (en) | 2016-08-04 | 2016-08-04 | The piston of electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858507U true CN205858507U (en) | 2017-01-04 |
Family
ID=57656764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836444.3U Active CN205858507U (en) | 2016-08-04 | 2016-08-04 | The piston of electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014676A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
-
2016
- 2016-08-04 CN CN201620836444.3U patent/CN205858507U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014676A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |