CN103470391B - Modular cylinder - Google Patents
Modular cylinder Download PDFInfo
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- CN103470391B CN103470391B CN201310442086.9A CN201310442086A CN103470391B CN 103470391 B CN103470391 B CN 103470391B CN 201310442086 A CN201310442086 A CN 201310442086A CN 103470391 B CN103470391 B CN 103470391B
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- cylinder
- joint
- modular
- hoop
- cylinder head
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Abstract
The invention provides a kind of modular cylinder, this cylinder comprises: cylinder barrel; Cylinder head, is connected with cylinder barrel by the joint being set in periphery, cylinder barrel upper end; Wherein, the joint periphery of cylinder head is provided with the sizing hoop for limiting joint thermal expansion.Modular cylinder provided by the invention, utilize sizing hoop, the thermal expansion amount of aluminium matter cylinder head can be overcome, ensure the magnitude of interference of operating temperature lower seal section and connecting thread, improve sealing between cylinder head and cylinder barrel, prevent piston engine cylinder from producing seepage, improve the reliability of engine operation.
Description
Technical field
The present invention relates to reciprocating engine field, especially, relate to a kind of modular cylinder.
Background technique
Modular cylinder is generally formed by connecting by interference thread by aluminium matter cylinder head and steel cylinder barrel, sealing between cylinder head and cylinder barrel leans on the cylindrical shape seal section above the magnitude of interference of connecting thread and screw thread to ensure, during combined cylinders, the place's of being screwed coating sealer.During due to cylinder operation, bear the pressure of high-temperature high-pressure fuel gas, at this temperature, cylinder head is different with the linear expansion coeffcient of cylinder barrel, causes the magnitude of interference between cylinder head and cylinder barrel to reduce, even occurs gap, cause the leakage of combustion gas, affect engine performance.
Summary of the invention
The object of the invention is to provide a kind of modular cylinder, to solve between the cylinder head of existing modular cylinder and cylinder barrel the fitted seal technical problem loosely when hot operation.
For achieving the above object, the invention provides a kind of modular cylinder, comprising: cylinder barrel; Cylinder head, is connected with cylinder barrel by the joint being set in periphery, cylinder barrel upper end; The joint periphery of cylinder head is provided with the sizing hoop for limiting joint thermal expansion.
Further, hoop of shaping is connected with interference fit between joint.
Further, the magnitude of interference of shaping between hoop and joint is 0.09mm to 0.01mm.
Further, hoop of shaping is steel hoop.
Further, the periphery of the joint of cylinder head is formed with annular groove; One end of sizing hoop is formed with the locating flange matched with annular groove.
Further, locating flange is positioned at the upper end of sizing hoop.
Further, the part of connection part above sizing hoop is connected by interference thread with cylinder barrel upper end.
Further, (periphery higher than the part of interference thread connection is also provided with seal section to cylinder barrel.
The present invention has following beneficial effect:
The invention provides a kind of modular cylinder, comprising: cylinder barrel; Cylinder head, is connected with cylinder barrel by the joint being set in periphery, cylinder barrel upper end; Wherein, the joint periphery of cylinder head is provided with the sizing hoop for limiting joint thermal expansion.Modular cylinder provided by the invention, utilize sizing hoop, the thermal expansion amount of aluminium matter cylinder head can be overcome, ensure the magnitude of interference of operating temperature lower seal section and connecting thread, improve sealing between cylinder head and cylinder barrel, prevent piston engine cylinder from producing seepage, improve the reliability of engine operation.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the side, sectional structural representation of the modular cylinder of the preferred embodiment of the present invention;
Fig. 2 is the partial enlargement structural representation in A portion in Fig. 1; And
Fig. 3 be the sizing hoop of the preferred embodiment of the present invention partly cut open structural representation.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1 to Figure 3, the invention provides a kind of modular cylinder, this modular cylinder comprises: cylinder barrel 10 and the cylinder head 30 being arranged on cylinder barrel 10 upper end, cylinder head 30 is connected with cylinder barrel 10 by the joint 31 being set in periphery, cylinder barrel 10 upper end, wherein, joint 31 periphery of cylinder head 30 is provided with the sizing hoop 50 for limiting joint 31 thermal expansion.
The periphery of the joint 31 combined with cylinder barrel 10 at cylinder head 30 arranges steel and to shape hoop 50, interference fit is adopted between sizing hoop 50 and joint 31, magnitude of interference 0.09 ~ 0.01, to overcome the thermal expansion amount of aluminium matter cylinder head 30, ensure interference thread 60 under operating temperature and be positioned at the magnitude of interference of seal section 70 of top of interference thread 60 attachment portion.Be interference fit between the sizing hoop 50 of steel and cylinder head 30, the selection of magnitude of interference can ensure effectively to obturage, and is convenient to assembling again.
The periphery of the joint 31 of cylinder head 30 is formed with annular groove, and this annular groove can utilize the groove of the original formation flange part of cylinder head 30; One end of sizing hoop 50 is formed with the locating flange 51 matched with annular groove.Arrange locating flange 51 can prevent from coming off during sizing hoop 50 high temperature, sizing hoop 50 need be heated during combination.Sizing hoop 50 is arranged on the cylndrical surface below cylinder head 30 radiating fin.For the magnitude of interference requirement between satisfied sizing hoop 50 and cylinder head 30, cylinder head 30 divides three groups with the fit dimension Φ D of sizing hoop 50 by 0.04mm, by group pairing during combination.Sizing hoop 50 is designed with the locating flange 51 of an internal diameter Φ D1, thickness H, Φ D-Φ D1=0.25mm ~ 0.45mm, H=2mm ~ 3mm, when combined cylinders head 20 and sizing hoop 50, sizing hoop 50 is heated to 400 DEG C ~ 410 DEG C, insulation 15min ~ 20min, notes locating flange 51 installation direction upward.
Adopting the modular cylinder of this design through testing in certain model piston engine, proving that this design proposal maturation is effective, practical, part manufactures simple and convenient, and cylinder operation is safe and reliable.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a modular cylinder, comprising:
Cylinder barrel (10);
Cylinder head (30), is connected with described cylinder barrel (10) by the joint (31) being set in described cylinder barrel (10) periphery, upper end;
It is characterized in that,
Joint (31) periphery of described cylinder head (30) is provided with the sizing hoop (50) for limiting described joint (31) thermal expansion.
2. modular cylinder according to claim 1, is characterized in that,
Described sizing hoop (50) is connected with interference fit between described joint (31).
3. modular cylinder according to claim 2, is characterized in that,
Magnitude of interference between described sizing hoop (50) and described joint (31) is 0.09mm to 0.01mm.
4. modular cylinder according to claim 1, is characterized in that,
Described sizing hoop (50) is steel hoop.
5. modular cylinder according to any one of claim 1 to 4, is characterized in that,
The periphery of the joint (31) of described cylinder head (30) is formed with annular groove;
One end of described sizing hoop (50) is formed with the locating flange (51) matched with described annular groove.
6. modular cylinder according to claim 5, is characterized in that,
Described locating flange (51) is positioned at the upper end of described sizing hoop (50).
7. modular cylinder according to claim 5, is characterized in that,
The part that described joint (31) is positioned at described sizing hoop (50) top is connected by interference thread (60) with described cylinder barrel (10) upper end.
8. modular cylinder according to claim 7, is characterized in that,
The periphery of the part connected higher than described interference thread (60) of described cylinder barrel (10) is also provided with seal section (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442086.9A CN103470391B (en) | 2013-09-25 | 2013-09-25 | Modular cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442086.9A CN103470391B (en) | 2013-09-25 | 2013-09-25 | Modular cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470391A CN103470391A (en) | 2013-12-25 |
| CN103470391B true CN103470391B (en) | 2016-01-06 |
Family
ID=49795396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310442086.9A Active CN103470391B (en) | 2013-09-25 | 2013-09-25 | Modular cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470391B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE555347C (en) * | 1929-09-16 | 1932-07-21 | Marius Jean Baptiste Barbarou | Air-cooled cylinder for internal combustion engines |
| GB454210A (en) * | 1935-05-16 | 1936-09-25 | Daimler Benz Ag | Improvements in and connected with the lining of liquid-cooled engine cylinders |
| AT227026B (en) * | 1959-09-09 | 1963-04-25 | Simmering Graz Pauker Ag | Cylinder head gasket in air-cooled internal combustion engines |
| DE3617079A1 (en) * | 1986-05-21 | 1987-11-26 | Kloeckner Humboldt Deutz Ag | Cylinder tube - cylinder head connection and device for its manufacture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EE00256U1 (en) * | 2000-07-07 | 2001-01-15 | Loktaevski Viktor | Piston engine |
-
2013
- 2013-09-25 CN CN201310442086.9A patent/CN103470391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE555347C (en) * | 1929-09-16 | 1932-07-21 | Marius Jean Baptiste Barbarou | Air-cooled cylinder for internal combustion engines |
| GB454210A (en) * | 1935-05-16 | 1936-09-25 | Daimler Benz Ag | Improvements in and connected with the lining of liquid-cooled engine cylinders |
| AT227026B (en) * | 1959-09-09 | 1963-04-25 | Simmering Graz Pauker Ag | Cylinder head gasket in air-cooled internal combustion engines |
| DE3617079A1 (en) * | 1986-05-21 | 1987-11-26 | Kloeckner Humboldt Deutz Ag | Cylinder tube - cylinder head connection and device for its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470391A (en) | 2013-12-25 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |