CN103758654A - Diesel engine fence type cylinder cover for high-speed ship - Google Patents
Diesel engine fence type cylinder cover for high-speed ship Download PDFInfo
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- CN103758654A CN103758654A CN201310750078.0A CN201310750078A CN103758654A CN 103758654 A CN103758654 A CN 103758654A CN 201310750078 A CN201310750078 A CN 201310750078A CN 103758654 A CN103758654 A CN 103758654A
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- cylinder cover
- cylinder head
- fence
- diesel engine
- cylinder
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Abstract
The invention discloses a diesel engine fence type cylinder cover for a high-speed ship. The cylinder cover comprises a cylinder cover body and a cylinder cover fence, wherein the ratio of the thickness of the cylinder cover body to the diesel engine cylinder diameter is 1:1; the cylinder cover fence is arranged at the top of the cylinder cover body, the ratio of the thickness of the cylinder cover fence to the total thickness of the diesel engine fence type cylinder cover for the high-speed ship is 0.32-0.40, and the cylinder cover body and the cylinder cover fence are of an integrated casting forming structure. By arranging a cylinder cover fence type structure in the thickness direction of the cylinder cover and integrating a rocker arm shaft support at the position of the cylinder cover fence type structure, on one hand, the ratio of the total thickness of the cylinder cover to the cylinder diameter is large, and the cylinder cover has enough integral strength, has higher sealing reliability and can be suitable for higher detonation pressure in a cylinder; on the other hand, the integrated structural design of integrating a rocker arm shaft mounting hole and the cylinder cover is adopted, and the cylinder cover is simple and compact in structure, high in positioning accuracy, convenient to install and dismantle and convenient to maintain.
Description
Technical field
The present invention relates to engine art, particularly a kind of high speed marine diesel engine fence type cylinder head.
Background technique
As everyone knows, the cylinder head of diesel engine is the important component part of diesel engine, cylinder head and cylinder block adopt after bolts assemblies, formed the confined space of reciprocating motion of the pistons, the pressure that fuel oil produces when cylinder combustion is burnt is conventionally higher, need cylinder to be stamped enough intensity, its sealing reliability of cylinder head that thickness is larger is better, conventionally the thickness requirement of cylinder head is not less than the bore size of diesel engine, and intake and exhaust rocking arm and the rocker shaft bed in engine valve actuating mechanism need to be arranged in cylinder head conventionally simultaneously.
At present, the cylinder head thickness size that domestic diesel engine adopts is generally 1 to 1 with diesel engine cylinder diameter dimension ratio, and structural strength is low, cannot bear detonation pressure in higher cylinder, and the cold start-up ability of motor, fuel economy and power output are restricted.In addition, intake and exhaust rocking arm and rocker shaft bed in distribution device need to be arranged separately in cylinder head end face, and amount of parts is many, and structure is not compact, higher to processing and installation positioning requirements.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provides a kind of simple and reasonable, and thickness size and bore size ratio are larger, and structural strength is high, and intake and exhaust rocker shaft bed is integrated in the high speed marine diesel engine fence type cylinder head in cylinder head.
For achieving the above object, according to the invention provides a kind of high speed marine diesel engine fence type cylinder head, comprising:
Cylinder head body, its thickness size is 1 to 1 with diesel engine cylinder diameter dimension ratio;
Cylinder head fence, is laid in described cylinder head bodies top, and the ratio of the general thickness of its thickness size and high speed marine diesel engine fence type cylinder head is between 0.32-0.40, and cylinder head body and cylinder head fence are integrated casting structure.
In technique scheme, the thickness size of cylinder head fence and diesel engine cylinder diameter dimension ratio are between 0.4-0.6.
In technique scheme, the width dimensions of the main gusset of cylinder head fence and diesel engine cylinder diameter ratio are between 0.065-0.085.
In technique scheme, on cylinder head fence, offer pitman arm shaft mounting hole.
Compared with prior art, the present invention has following beneficial effect: this high speed marine diesel engine fence type air cylinder head structure advantages of simple, by set up the cylinder head fence type structure of thickness direction in cylinder head, and at this integrated rocker arm shaft support in cylinder head fence type structure place, make on the one hand cylinder head general thickness size and bore size ratio larger, guarantee that cylinder is stamped enough bulk strengths, seal more reliably, can be applicable to detonation pressure in higher cylinder; On the other hand, adopt the integrated monolithic construction design of pitman arm shaft mounting hole and cylinder head, make the simple compactness of air cylinder head structure, positioning precision is high, mounting or dismounting are convenient, compact structure, be convenient to maintaining.
Accompanying drawing explanation
Fig. 1 is the structural representation of high speed marine diesel engine fence type cylinder head of the present invention;
Fig. 2 is the sectional structure schematic diagram of the A-A direction of Fig. 1;
Fig. 3 is the sectional structure schematic diagram of the B-B direction of Fig. 1;
Description of reference numerals:
1-cylinder head body, 2-cylinder head fence, 3-pitman arm shaft mounting hole, 4-main gusset.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technological scheme of the present invention.
High speed marine diesel engine fence type air cylinder head structure advantages of simple of the present invention, by set up the cylinder head fence type structure of thickness direction in cylinder head, and at this integrated rocker arm shaft support in cylinder head fence type structure place, make on the one hand cylinder head general thickness size and bore size ratio larger, guarantee that cylinder is stamped enough bulk strengths, seal more reliably, can be applicable to detonation pressure in higher cylinder; On the other hand, adopt the integrated monolithic construction design of pitman arm shaft mounting hole and cylinder head, make the simple compactness of air cylinder head structure, positioning precision is high, mounting or dismounting are convenient, compact structure, be convenient to maintaining.
Detailed description by way of example but unrestriced mode has illustrated the disclosure, should be understood that various aspect of the present disclosure can be by independent realization or the realization of being combined with other aspects below.This specification clearly enables those skilled in the art to manufacture and uses us to believe for new and non-obvious improvement, describe some embodiments, alternative, modification, alternative and system applies, comprised the current best mode that is considered to carry out the inventive principle of describing in this specification.When describing element or feature and/or embodiment, titled with " one " " one " " be somebody's turn to do " and " described ", be intended to expression and there are one or more in element or feature.Term " comprises " that " comprising " and " having " is intended to is comprising property, and also has extra element or feature beyond being illustrated in those specifically described elements or feature.
As shown in Figure 1 to Figure 3, the concrete structure of this high speed marine diesel engine fence type cylinder head comprises: cylinder head body 1 and be laid in the cylinder head fence 2 at cylinder head body 1 top, and be opened in the pitman arm shaft mounting hole 3 on this cylinder head fence 2.Wherein, cylinder head body 1 is integrated casting structure with cylinder head fence 2, and cylinder head general thickness size and bore size ratio are increased, and guarantees that cylinder is stamped enough bulk strengths, seals more reliable.Pitman arm shaft mounting hole 3 is for installing pitman arm shaft, and inlet valve rocker and exhaust valve rocker arm are arranged on pitman arm shaft, guarantees that the installation of pitman arm shaft is convenient, compact structure, and accurate positioning, the work of inlet valve rocker assembly and exhaust valve rocker arm assembly is more reliable; Greatly reduced the component of relevant auxiliary positioning, installation and sealing, thereby reduced costs; The accessibility of care and maintenance is good, is easy to mounting or dismounting, is conducive to apply.
Cylinder head fence 2(is shown in the dot and dash line square frame that is positioned at top in Fig. 2) thickness size be X, the general thickness of this high speed marine diesel engine fence type cylinder head is Y, the ratio of the general thickness Y of the thickness size X of cylinder head fence 2 and this high speed marine diesel engine fence type cylinder head is between 0.32-0.40, and the thickness size X of cylinder head fence 2 and diesel engine cylinder diameter dimension ratio are between 0.4-0.6, in such cases, cylinder head body 1(is shown in the dot and dash line square frame that is positioned at below in Fig. 2) thickness size (Y-X), it is 1 to 1 with diesel engine cylinder diameter dimension ratio, and the width dimensions of the main gusset 4 of cylinder head fence 2 is Z, itself and cylinder diameter ratio are between 0.065-0.085, to guarantee that cylinder is stamped enough bulk strengths, seal more reliable, go for detonation pressure in higher cylinder, make again this high speed marine diesel engine fence type air cylinder head structure size less, structure is compacter.
Pitman arm shaft mounting hole 3 is opened on cylinder head fence 2, for pitman arm shaft is installed, exhaust valve rocker arm and inlet valve rocker is also installed on pitman arm shaft.During installation, first inlet valve rocker bearing is laterally packed in intake valve bearing hole, exhaust valve rocking arm axle takes up in exhaust valve bearing hole, at this moment in the inner axle of pitman arm shaft of pitman arm shaft and the sealed groove of pitman arm shaft outer end axle, distinguish mounting O-shaped seal ring, the inner axle of pitman arm shaft is pierced into pitman arm shaft mounting hole 3, penetrate successively again exhaust valve rocker arm bearing and packing ring on inlet valve rocker bearing on packing ring, inlet valve rocker, packing ring, exhaust valve rocker arm, finally pitman arm shaft outer end axle is pierced in pitman arm shaft mounting hole 3; The O RunddichtringO being positioned on the inner axle of pitman arm shaft and pitman arm shaft outer end axle plays seal action; Packing ring can prevent the wearing and tearing between surface of contact, effectively guarantees the Security of assembling.
To sum up, this high speed marine diesel engine fence type air cylinder head structure advantages of simple, by set up the cylinder head fence type structure of thickness direction in cylinder head, and at this integrated rocker arm shaft support in cylinder head fence type structure place, make on the one hand cylinder head general thickness size and bore size ratio larger, guarantee that cylinder is stamped enough bulk strengths, seal more reliably, can be applicable to detonation pressure in higher cylinder; On the other hand, adopt the integrated monolithic construction design of pitman arm shaft mounting hole and cylinder head, make the simple compactness of air cylinder head structure, positioning precision is high, mounting or dismounting are convenient, compact structure, be convenient to maintaining.
Finally it should be noted that: above embodiment is only in order to illustrate patent of the present invention and the described technological scheme of unrestricted patent of the present invention; Therefore, although this specification has been described in detail patent of invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement patent of the present invention; And all do not depart from technological scheme and the improvement thereof of the spirit and scope of patent of the present invention, it all should be encompassed in the claim scope of patent of the present invention.
Claims (4)
1. a high speed marine diesel engine fence type cylinder head, is characterized in that, comprising:
Cylinder head body, its thickness size is 1 to 1 with diesel engine cylinder diameter dimension ratio;
Cylinder head fence, is laid in described cylinder head bodies top, and the ratio of the general thickness of its thickness size and high speed marine diesel engine fence type cylinder head is between 0.32-0.40, and described cylinder head body and cylinder head fence are integrated casting structure.
2. high speed marine diesel engine fence type cylinder head according to claim 1, is characterized in that: the thickness size of described cylinder head fence and diesel engine cylinder diameter dimension ratio are between 0.4-0.6.
3. high speed marine diesel engine fence type cylinder head according to claim 1, is characterized in that: the width dimensions of the main gusset of described cylinder head fence and diesel engine cylinder diameter ratio are between 0.065-0.085.
4. according to the high speed marine diesel engine fence type cylinder head described in any one in claims 1 to 3, it is characterized in that: on described cylinder head fence, offer pitman arm shaft mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750078.0A CN103758654B (en) | 2013-12-31 | 2013-12-31 | Diesel engine fence type cylinder cover for high-speed ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750078.0A CN103758654B (en) | 2013-12-31 | 2013-12-31 | Diesel engine fence type cylinder cover for high-speed ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103758654A true CN103758654A (en) | 2014-04-30 |
| CN103758654B CN103758654B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310750078.0A Active CN103758654B (en) | 2013-12-31 | 2013-12-31 | Diesel engine fence type cylinder cover for high-speed ship |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213073A (en) * | 1990-11-05 | 1993-05-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head of an internal combustion engine |
| CN101397948A (en) * | 2007-09-27 | 2009-04-01 | 三菱自动车工业株式会社 | Cylinder head |
| CN203614252U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Fence type cylinder cover for high-speed marine diesel engine |
-
2013
- 2013-12-31 CN CN201310750078.0A patent/CN103758654B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213073A (en) * | 1990-11-05 | 1993-05-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head of an internal combustion engine |
| CN101397948A (en) * | 2007-09-27 | 2009-04-01 | 三菱自动车工业株式会社 | Cylinder head |
| CN203614252U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Fence type cylinder cover for high-speed marine diesel engine |
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| CN103758654B (en) | 2015-03-25 |
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Effective date of registration: 20230110 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |
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