CN202125366U - Central cylinder liner for internal combustion engine - Google Patents
Central cylinder liner for internal combustion engine Download PDFInfo
- Publication number
- CN202125366U CN202125366U CN2010206868547U CN201020686854U CN202125366U CN 202125366 U CN202125366 U CN 202125366U CN 2010206868547 U CN2010206868547 U CN 2010206868547U CN 201020686854 U CN201020686854 U CN 201020686854U CN 202125366 U CN202125366 U CN 202125366U
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- CN
- China
- Prior art keywords
- cylinder liner
- combustion engine
- internal combustion
- cylinder
- lubrication
- Prior art date
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- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a central cylinder liner used on an internal combustion engine, which comprises a location support ledge (1), a gasket locating bump (2) on the ledge, a plurality of ring slots (3) which use sealing rubber rings, a lower guider (4) and inner circular surface trench platform curves (5), thereby forming an assembly way of 'fixed top+ free middle part+ guided lower part+ lubricated inside'. Moreover, high cooling efficient is implemented by adopting a structure which inputs water from the middle part of the cylinder liner to cool the cylinder liner. Trench platform curves for storing oil are grinded on the inner circular surface of the cylinder liner of the internal combustion engine, which can quickly form high-intensity oil films and scrape the redundant engine oil back to a crankcase under sputtering lubrication and pressure lubrication of a nozzle, so that the inner wall of the cylinder liner and a friction pair of a piston ring can be fully lubricated and well sealed, thereby well reducing the loss of friction work.
Description
Technical field:
The utility model relates to the cylinder liner of using on a kind of internal-combustion engine.
Background technique:
During internal combustion engine, piston carries out to-and-fro motion at a high speed along cylinder inner wall, and combustion stroke can produce high temperature (about 1000 degree).Internal-combustion engine because cylinder liner produces heavy wear, is all wanted place under repair or replacing after using a period of time, the cost of repairing or changing is all very high.The wearing and tearing of cylinder jacket of diesel engine surpass the permission standard will make the power character of automobile, Economy seriously descend.Therefore, through slowing down the wearing and tearing of cylinder liner, can prolong the working life of internal-combustion engine greatly.The main cause of cylinder liner abrasion has three aspects, i.e. mechanical wear, abrasive wear, chemical corrosion usually.Mechanical wear is caused by mechanical friction; The degree of mechanical wear receives the pressure mutual in machining accuracy, fit quality, lubricating condition, the operating temperature friction of cylinder, piston ring and the influence of surface hardness size, and the hardness that improves cylinder liner internal wall can reduce wearing and tearing greatly.In order to improve the cylinder liner internal wall surface hardness; Normally carry out high frequency hardening, the quenching of high energy laser plasma light beam etc. on the cylinder liner internal wall surface; But these modes not only processing cost are high, and the surface hardness that finally obtains receives the restriction of material itself, and its result still is undesirable.
Summary of the invention
The purpose of the utility model provides a kind of middle cylinder jacket of diesel engine, the technical problem of pulling piston, piston ring and cylinder liner with metal microstructure that HTHP the is caused thawing adhesion that overcomes motor generation when acting is burnt.[0003] technological scheme of the utility model is:
A kind of middle cylinder jacket of diesel engine; This cylinder liner top is processed with positioning support shoulder (1); The design gas liner packing pad positioning convex (2) also in the upper-end surface of positioning support shoulder, supporting shoulder lower plane is the positioning step of cylinder liner, is close on the locating platform that is installed in body cylinder liner mounting hole; Its upper-end surface exceeds 0.07～0.15mm than the upper-end surface of body, and the upper-end surface of the upper-end surface of this positioning support shoulder and body is equipped with the clamping cylinder sealing gasket jointly; The middle and lower part of cylinder liner is provided with the cylinder liner positioning step and is provided with several annular groove that is used for the fitting tight cushion rubber (3), and through being contained in the cylinder liner sealing radial location platform compression fit of O-ring seal and body in the annular groove, plays the effect of sealing cooling water; Play roof anchorage, the middle part free action.
A kind of middle cylinder jacket of diesel engine comprises the cylinder liner lower guide to (4), and the cylinder liner mounting hole on itself and the body has minimum Spielpassung, plays a part guide-localization.
The bore area of cylinder jacket of diesel engine work be assembly surface be again working surface, its quality of processing directly influences the assembly quality and the usability of internal-combustion engine.Process through new processing technology " platform honing "; Honing goes out to have the groove platform reticulate pattern (5) that oil storage is used on the internal circular surfaces of cylinder liner; It can form high-intensity oil film down fast and scrape back crankcase to unnecessary machine oil through the pressure lubrication of splash lubrication and nozzle; Play the internal lubrication effect, make this friction pair of cylinder liner internal wall and piston ring obtain lubricated fully and good sealing property, better reduce the loss of frictional work.
In order to improve the water cooling effect; Employing is water inlet cooling cylinder liner construction from the cylinder liner middle part; Substitute the structure that traditional cooling water from down to up soaks the cooling air cylinder sleeve; Guarantee effectively in time to take away the heat that transmits from cylinder liner comprehensively, also avoided the phenomenon of the cooling that is unfavorable for cylinder liner of conventional diesel engine.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Be labeled as among the figure: supporting shoulder (1), positioning convex (2), annular groove (3), lower guide are to (4), groove platform reticulate pattern (5).
Embodiment
The mounting type of this cylinder liner is that this cylinder liner top is processed with positioning support shoulder (1); The design gas liner packing pad positioning convex (2) also in the upper-end surface of positioning support shoulder; Supporting shoulder lower plane is the positioning step of cylinder liner, is close on the locating platform that is installed in body cylinder liner mounting hole; The middle and lower part of cylinder liner is provided with the cylinder liner positioning step and is provided with several annular groove that is used for the fitting tight cushion rubber (3), and through being contained in the cylinder liner sealing radial location platform compression fit of O-ring seal and body in the annular groove, plays the effect of sealing cooling water; Also play roof anchorage, the middle part free action.Simultaneously, the cylinder liner mounting hole of cylinder liner lower guide on (4) and body has minimum Spielpassung, plays a part guide-localization.Compress greater than 250N/N.m under the pretightening force effect at cylinder head, the cylinder liner upper-end surface exceeds the positioning support shoulder of 0.07～0.15mm than the upper-end surface of body the upper-end surface of upper-end surface and body is equipped with the clamping cylinder sealing gasket jointly and seals.Be used for O-ring seal and the middle part annular groove is equipped with several, the cooling water in the water cavity has been played good seal action.Such fit can greatly reduce cylinder liner and distortion under the compaction pressure of cylinder head, occur.
Simultaneously; The bore area of cylinder jacket of diesel engine work be assembly surface be again working surface; Process through " platform honing "; Honing goes out to have the groove platform reticulate pattern (5) that oil storage is used on the internal circular surfaces of cylinder liner, plays the internal lubrication effect under the pressure lubrication through splash lubrication and nozzle, makes this friction pair of cylinder liner internal wall and piston ring obtain lubricated fully and good sealing property.
In addition; Adopt the structural type of wet liner in conjunction with this cylinder liner; The characteristics that its cylinder liner outer wall and cooling liquid directly contact, the great amount of high-temperature that produces for burning the time passes to cooling water through cylinder liner, piston and piston ring and takes away heat in time, adopts the water inlet cooling cylinder liner construction from the cylinder liner middle part; Substitute the structure that traditional cooling water from down to up soaks the cooling air cylinder sleeve; The cooling water that guarantees cooling air cylinder sleeve top has sufficient flowing, and guarantees effectively in time to take away the heat that transmits from cylinder liner comprehensively, improves accurate cooling water efficient.Also having avoided the cooling water circulation of conventional diesel engine is from bottom to top; Zone, top in cylinder liner just forms the slough easily; The phenomenon that is unfavorable for the cooling of cylinder liner; And the suffered heat in the middle and lower part of cylinder liner is so big, takes away cooling to heat through cylinder body and has satisfied requirement fully.
Claims (2)
1. middle cylinder jacket of diesel engine; Top comprises that supporting shoulder (1), positioning convex (2), annular groove (3), lower guide are to (4), groove platform reticulate pattern (5); Form the fit of " roof anchorage+middle part freedom+lower guide to+internal lubrication ", and adopt water inlet cooling cylinder liner construction from the cylinder liner middle part.
2. cylinder jacket of diesel engine as claimed in claim 1 is characterized in that: positioning convex (2) upper-end surface exceeds 0.07～0.15mm than the upper-end surface of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206868547U CN202125366U (en) | 2010-12-29 | 2010-12-29 | Central cylinder liner for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206868547U CN202125366U (en) | 2010-12-29 | 2010-12-29 | Central cylinder liner for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125366U true CN202125366U (en) | 2012-01-25 |
Family
ID=45488436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206868547U Expired - Fee Related CN202125366U (en) | 2010-12-29 | 2010-12-29 | Central cylinder liner for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005873A (en) * | 2014-04-30 | 2014-08-27 | 广西玉柴动力机械有限公司 | Engine cylinder sleeve |
-
2010
- 2010-12-29 CN CN2010206868547U patent/CN202125366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005873A (en) * | 2014-04-30 | 2014-08-27 | 广西玉柴动力机械有限公司 | Engine cylinder sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |