CN102767445A - Cylinder gasket for gasoline engine - Google Patents
Cylinder gasket for gasoline engine Download PDFInfo
- Publication number
- CN102767445A CN102767445A CN2012102490701A CN201210249070A CN102767445A CN 102767445 A CN102767445 A CN 102767445A CN 2012102490701 A CN2012102490701 A CN 2012102490701A CN 201210249070 A CN201210249070 A CN 201210249070A CN 102767445 A CN102767445 A CN 102767445A
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- China
- Prior art keywords
- cylinder
- cylinder hole
- metal plate
- sheet metal
- guard ring
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- 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.)
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Abstract
The invention relates to a cylinder gasket for a gasoline engine. The cylinder gasket comprises a layer of metal plate in which four cylinder holes a are reserved. One lateral surface of the metal plate is an upper surface, and the other lateral surface of the metal plate is a lower surface. A circular cylinder hole sealing rib is arranged on the periphery of each cylinder hole a, and has a shallow circular cross section. More than two retainers are arranged on the periphery of each cylinder hole a, and has a groove-shaped cross section. The upper part of each retainer is a concave groove on the upper surface of the metal plate, and the lower part of each retainer is a convex ring on the lower surface of the metal plate. The compression height tolerance of the cylinder gasket is completely determined by a punch forming process for the retainers, so that the influence of the accumulated thickness tolerance of the metal plate is avoided, and control over the compression ratio of the engine is facilitated; a problem about the sealing reliability of a cylinder is effectively solved, and the sealing reliability of the cylinder is effectively improved under the condition of no remarkable increase of pre-tightening force of a cylinder cover bolt; and the cylinder gasket is simple in structure and high in production efficiency and consistency, and a machining process is simple.
Description
Technical field
The invention belongs to the technology of gasoline engine field, be specifically related to the head gasket of petrol engine.
Background technique
Head gasket is as the Sealing between cylinder body and the cylinder cap, and seal request is high, work under bad environment; And the compression height tolerance of head gasket is to the compression ratio important influence of petrol engine.And the compression ratio very important parameter that is petrol engine all is closely related with power character, Economy and the discharging of petrol engine.The sheet metal head gasket has become the main flow of modern head gasket.Its basic structure is on sheet metal, to stamp out sealed muscle; For the amount of deformation to sealed muscle is made control, can make flange to sheet metal on every side in the cylinder hole usually, perhaps the weld metal circle; Perhaps increase the layer of metal plate in addition, around the cylinder hole of the sheet metal that increases, stamp out guard ring.Traditional design method is the number of plies through the increase head gasket, and to increase the number of plies of sealed muscle, the sealed muscle that stacks up can better play seal action.But the number of plies of head gasket increases, and makes the structure and the complex manufacturing of head gasket on the one hand, and on the other hand because tolerance stack, the compression height tolerance of head gasket increases, and is unfavorable for the control of petrol engine compression ratio.Simultaneously, the head gasket structure is more complicated, and its reliability is low more; In case, might cause the head gasket seal failure because a certain position of head gasket cracks or breakage.
Summary of the invention
In order to adapt to more and more harsher seal request and increasingly high gasoline engine performance requirement, the present invention provides a kind of head gasket of petrol engine of guard ring alterable height of individual layer.
Technological scheme of the present invention is following:
A kind of head gasket of petrol engine comprises the layer of metal plate, offers four cylinder hole a on the sheet metal, and the periphery of four cylinder hole a is laid with oilhole, water hole, cylinder bolt hole and positioning pin hole; One side of said sheet metal is a upper surface, and the another side is a lower surface; The circumference place of each cylinder hole a is provided with the cylinder hole sealed muscle 3 of circular arc, and one section cylinder hole sealed muscle between adjacent two cylinder hole a 3 overlaps; The cross section of cylinder hole sealed muscle 3 is shallow circular-arc, it is characterized in that: the circumference place of said each cylinder hole a be provided with two circles above guard ring 2; The cross section of guard ring 2 is groove-like, and the top of guard ring 2 is concave ring groove 21 on the sheet metal upper surface, and the bottom of guard ring 2 is bulge loop 22 on the sheet metal lower surface.
The bulge loop height of said guard ring 2 bottoms is H1, and the outside, bottom surface of said cylinder hole sealed muscle 3 is H2 apart from the distance between the sheet metal bottom surface, and H1 is less than H2.
Useful technique effect of the present invention embodies in the following areas:
1. the compression height tolerance of head gasket of the present invention depends on the punch forming process of guard ring fully, is directly controlled by mould, avoided the influence of the cumulative limit of the thickness of sheet metal own, and the dimensional accuracy of precise punch forming is high; Help the control of engine compression ratio;
2. the guard ring of head gasket of the present invention is by the die stamping moulding; Can make that the guard ring height of diverse location is different around the cylinder hole through the size adjusting of mould; More evenly continuous to realize sealed muscle with the contact pressure of cylinder block and head; Thereby do not needing significantly to increase under the situation of cylinder head bolt pretightening force the lift-off seal reliability;
3. head gasket of the present invention, guard ring and sealed muscle have been simplified the overall structure and the production technology of head gasket on one deck sheet metal; Improved sealing reliability from structure, looked unfamiliar at producer and produce efficient height, good product consistency.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the L-L sectional view of Fig. 1.
Sequence number among the last figure: head gasket 1, guard ring 2, concave ring groove 21, bulge loop 22, cylinder hole sealed muscle 3.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done to describe further through embodiment.
Embodiment
Referring to Fig. 1, a kind of head gasket 1 of petrol engine comprises the layer of metal plate, offers four cylinder hole a on the sheet metal, and the periphery of four cylinder hole a is laid with oilhole, water hole, cylinder bolt hole and positioning pin hole; One side of said sheet metal is a upper surface, and the another side is a lower surface; The circumference place of each cylinder hole a is provided with the cylinder hole sealed muscle 3 of circular arc, and one section cylinder hole sealed muscle between adjacent two cylinder hole a 3 overlaps; The cross section of cylinder hole sealed muscle 3 is shallow circular-arc, sees Fig. 2.The circumference place of each cylinder hole a is provided with the above guard ring 2 of two circles; The cross section of guard ring 2 is groove-like, and the top of guard ring 2 is concave ring groove 21 on the sheet metal upper surface, and the bottom of guard ring 2 is bulge loop 22 on the sheet metal lower surface, see Fig. 2.
Referring to Fig. 2, the bump height of guard ring 2 bottoms is H1, and the distance between the outer bottom identity distance sheet metal bottom surface of said cylinder hole sealed muscle 3 is H2, and H1 is less than H2.
In the present embodiment, plate thickness is 0.25 ㎜, and H1 is 0.1 ㎜, and H2 is 0.15 ㎜.
Claims (2)
1. the head gasket of a petrol engine comprises the layer of metal plate, offers four cylinder hole a on the sheet metal, and the periphery of four cylinder hole a is laid with oilhole, water hole, cylinder bolt hole and positioning pin hole; One side of said sheet metal is a upper surface, and the another side is a lower surface; The circumference place of each cylinder hole a is provided with the cylinder hole sealed muscle (3) of circular arc, and the one section cylinder hole sealed muscle (3) between adjacent two cylinder hole a overlaps; The cross section of cylinder hole sealed muscle (3) is shallow circular-arc, it is characterized in that: the circumference place of said each cylinder hole a be provided with two circles above guard ring (2); The cross section of guard ring (2) is groove-like, and the top of guard ring (2) is concave ring groove (21) on the sheet metal upper surface, and the bottom of guard ring (2) is bulge loop (22) on the sheet metal lower surface.
2. the head gasket of a kind of petrol engine according to claim 1, it is characterized in that: the bulge loop height of said guard ring (2) bottom is H1, and the outside, bottom surface of said cylinder hole sealed muscle (3) is H2 apart from the distance between the sheet metal bottom surface, and H1 is less than H2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102490701A CN102767445A (en) | 2012-07-19 | 2012-07-19 | Cylinder gasket for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102490701A CN102767445A (en) | 2012-07-19 | 2012-07-19 | Cylinder gasket for gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767445A true CN102767445A (en) | 2012-11-07 |
Family
ID=47094969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102490701A Pending CN102767445A (en) | 2012-07-19 | 2012-07-19 | Cylinder gasket for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767445A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878581A (en) * | 2020-07-24 | 2020-11-03 | 舟山海山机械密封材料股份有限公司 | Novel sealing gasket structure for sealing engine |
| CN112879120A (en) * | 2021-01-26 | 2021-06-01 | 东风汽车集团股份有限公司 | Oil pan sealing structure and method, engine and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050206091A1 (en) * | 2004-03-17 | 2005-09-22 | Elringklinger Ag | Cylinder head gasket |
| CN201326472Y (en) * | 2009-06-24 | 2009-10-14 | 锦州光和密封实业有限公司 | Single-layer plate metal air cylinder gasket |
| CN202152710U (en) * | 2011-07-14 | 2012-02-29 | 安徽江淮汽车股份有限公司 | Single-layer metal cylinder gasket for 1.3L gasoline engine |
| CN202338412U (en) * | 2011-10-16 | 2012-07-18 | 上海兴盛密封垫有限公司 | Rib strip structure in cylinder opening of cylinder gasket |
| CN202659373U (en) * | 2012-07-19 | 2013-01-09 | 安徽江淮汽车股份有限公司 | Cylinder head gasket of gasoline engine |
-
2012
- 2012-07-19 CN CN2012102490701A patent/CN102767445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050206091A1 (en) * | 2004-03-17 | 2005-09-22 | Elringklinger Ag | Cylinder head gasket |
| CN201326472Y (en) * | 2009-06-24 | 2009-10-14 | 锦州光和密封实业有限公司 | Single-layer plate metal air cylinder gasket |
| CN202152710U (en) * | 2011-07-14 | 2012-02-29 | 安徽江淮汽车股份有限公司 | Single-layer metal cylinder gasket for 1.3L gasoline engine |
| CN202338412U (en) * | 2011-10-16 | 2012-07-18 | 上海兴盛密封垫有限公司 | Rib strip structure in cylinder opening of cylinder gasket |
| CN202659373U (en) * | 2012-07-19 | 2013-01-09 | 安徽江淮汽车股份有限公司 | Cylinder head gasket of gasoline engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878581A (en) * | 2020-07-24 | 2020-11-03 | 舟山海山机械密封材料股份有限公司 | Novel sealing gasket structure for sealing engine |
| CN111878581B (en) * | 2020-07-24 | 2022-05-17 | 舟山海山机械密封材料股份有限公司 | Novel sealing gasket structure for sealing engine |
| CN112879120A (en) * | 2021-01-26 | 2021-06-01 | 东风汽车集团股份有限公司 | Oil pan sealing structure and method, engine and automobile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |