CN207064083U - A kind of step cylinder jacket - Google Patents
A kind of step cylinder jacket Download PDFInfo
- Publication number
- CN207064083U CN207064083U CN201720702401.0U CN201720702401U CN207064083U CN 207064083 U CN207064083 U CN 207064083U CN 201720702401 U CN201720702401 U CN 201720702401U CN 207064083 U CN207064083 U CN 207064083U
- Authority
- CN
- China
- Prior art keywords
- hole
- diameter
- cylinder jacket
- minor diameter
- step cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model belongs to cylinder sleeve technology field, mainly proposes a kind of step cylinder jacket.A kind of endoporus of the step cylinder jacket proposed has the minor diameter through hole that the diameter kissing with piston is matched somebody with somebody；Working face of the internal face of the minor diameter through hole as cylinder jacket；The endoporus of the step cylinder jacket also has the diameter through hole positioned at minor diameter through hole both ends；Working face of the internal face of the diameter through hole as cylinder jacket；The step through hole of big at both ends and small in middle is formed with described minor diameter through hole positioned at the diameter through hole positioned at minor diameter through hole both ends.The utility model is avoided in service life of aeroengine, and the step occurred in the middle part of cylinder jacket by abrasion depression influences piston movement, improves the security of engine operation.
Description
Technical field
The utility model belongs to cylinder sleeve technology field, mainly proposes a kind of step cylinder jacket.
Background technology
In engine operation process, piston is run in the cylinder jacket of cylindrical shape, and the middle part in cylinder liner internal wall face is work
Make face, the both ends in cylinder liner internal wall face are non-working surface；When piston is run, the middle part of cylinder jacket is that working face easily occurs necessarily
The abrasion of degree, make the working face of cylinder jacket and form recess step between the non-working surface at working face both ends, it is possible to
The piston of high-speed cruising is touched, potential safety hazard to a certain extent be present.
The content of the invention
The purpose of this utility model is to propose a kind of step cylinder jacket, it is kept away when cylinder jacket produces abrasion
Exempt to form worn step in the middle part of cylinder jacket, so as to increase engine safety in operation.
The utility model adopts the following technical scheme that to complete foregoing invention purpose：
A kind of step cylinder jacket, the endoporus of the step cylinder jacket have the minor diameter that the diameter kissing with piston is matched somebody with somebody
Through hole；Working face of the internal face of the minor diameter through hole as cylinder jacket；The endoporus of the step cylinder jacket also has position
Diameter through hole in minor diameter through hole both ends；Working face of the internal face of the diameter through hole as cylinder jacket；Positioned at small
The diameter through hole at diameter through hole both ends forms the step through hole of big at both ends and small in middle with described minor diameter through hole.
The internal diameter of the diameter through hole is bigger 0.6-1.0mm than the internal diameter of minor diameter through hole.
The boundary line I of the minor diameter through hole and the binding site of diameter through hole described in upper end is less than on piston running position
Limit 0-5mm.
The boundary line II of the minor diameter through hole and the binding site of diameter through hole described in lower end is higher than piston running position
Lower limit 0-5mm.
The utility model proposes a kind of step cylinder jacket, the endoporus of cylinder jacket uses the step of big at both ends and small in middle
Through hole, cylinder jacket non-working surface hole size is more than working face hole size, avoid in service life of aeroengine, cylinder
The step that set middle part occurs by abrasion depression influences piston movement, improves the security of engine operation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, minor diameter through hole, 2, diameter through hole, 3, boundary line I, 4, boundary line II, 5, piston running position lower limit, 6,
The piston running position upper limit.
Embodiment
The utility model is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
As illustrated, a kind of step cylinder jacket, the endoporus of the step cylinder jacket has the diameter kissing with piston
The minor diameter through hole 1 matched somebody with somebody；Working face of the internal face of the minor diameter through hole 1 as cylinder jacket；The step cylinder jacket
Endoporus also has the diameter through hole 2 positioned at the both ends of minor diameter through hole 1；The internal face of the diameter through hole 2 is as cylinder jacket
Working face；Diameter through hole 2 positioned at the both ends of minor diameter through hole 1 forms big at both ends and small in middle with described minor diameter through hole 1
Step through hole.
The internal diameter of the diameter through hole 2 is bigger 0.6-1mm than the internal diameter of minor diameter through hole 1.
The boundary line I 3 of the minor diameter through hole 1 and the binding site of diameter through hole 2 described in upper end is less than piston running position
Put upper limit 0-5mm.
The boundary line II 4 of the minor diameter through hole 1 and the binding site of diameter through hole 2 described in lower end is higher than piston running position
Put lower limit 0-5mm.
Claims (4)
- A kind of 1. step cylinder jacket, it is characterised in that：The endoporus of the step cylinder jacket has the diameter kissing with piston The minor diameter through hole matched somebody with somebody；Working face of the internal face of the minor diameter through hole as cylinder jacket；The step cylinder jacket it is interior Hole also has the diameter through hole positioned at minor diameter through hole both ends；Work of the internal face of the diameter through hole as cylinder jacket Face；Step positioned at the diameter through hole and described minor diameter through hole composition big at both ends and small in middle at minor diameter through hole both ends is led to Hole.
- A kind of 2. step cylinder jacket as claimed in claim 1, it is characterised in that：The internal diameter of the diameter through hole is more straight than small Big 0.6-the 1mm of internal diameter of footpath through hole.
- A kind of 3. step cylinder jacket as claimed in claim 1, it is characterised in that：It is big described in the minor diameter through hole and upper end The boundary line I of the binding site of diameter through hole is less than piston running position upper limit 0-5mm.
- A kind of 4. step cylinder jacket as claimed in claim 1, it is characterised in that：It is big described in the minor diameter through hole and lower end The boundary line II of the binding site of diameter through hole is higher than piston running position lower limit 0-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720702401.0U CN207064083U (en) | 2017-06-16 | 2017-06-16 | A kind of step cylinder jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720702401.0U CN207064083U (en) | 2017-06-16 | 2017-06-16 | A kind of step cylinder jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064083U true CN207064083U (en) | 2018-03-02 |
Family
ID=61508390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720702401.0U Expired - Fee Related CN207064083U (en) | 2017-06-16 | 2017-06-16 | A kind of step cylinder jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064083U (en) |
-
2017
- 2017-06-16 CN CN201720702401.0U patent/CN207064083U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 |