CN104421033A - Cylinder sleeve of diesel engine - Google Patents
Cylinder sleeve of diesel engine Download PDFInfo
- Publication number
- CN104421033A CN104421033A CN201310379838.1A CN201310379838A CN104421033A CN 104421033 A CN104421033 A CN 104421033A CN 201310379838 A CN201310379838 A CN 201310379838A CN 104421033 A CN104421033 A CN 104421033A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- cylinder sleeve
- diesel engine
- cylinder liner
- neck bush
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/004—Cylinder liners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a cylinder sleeve of a diesel engine. The cylinder sleeve comprises a cylinder sleeve body which is provided with a protruding shoulder, an upper support, two water seal ring grooves and a lower support; a liner sleeve is fixed in the cylinder sleeve body; two layers of abrasion resistance carbides coat the inner surface and the outer surface of the liner sleeve respectively. According to the cylinder sleeve of the diesel engine, the carbon deposition of the cylinder wall of a combustion chamber and a piston can be prevented and accordingly the service life of the cylinder sleeve is extended.
Description
Technical field
The present invention relates to a kind of cylinder jacket of diesel engine.
Background technique
Cylinder liner is embedded in cylinder block, jointly forms firing chamber with piston, cylinder head, and guides piston to move reciprocatingly.During internal combustion engine, cylinder liner will bear the impact of high temperature and high pressure gas, the thermal stress that cylinder wall internal-external temperature difference produces, and the effect of the side pressure of piston and frictional force and bolt pretightening, operating conditions is very severe.Meanwhile, because piston does high speed to-and-fro motion in cylinder, and lubricating condition is bad, makes cylinder liner abrasion serious.Cylinder liner adopts that wear resistance is good, casting is convenient usually, lower-cost alloy cast iron or spheroidal graphite cast iron manufacture.The more material of current application is High phosphorus alloys cast iron or boron cast-iron, and carries out high frequency hardening, porous chromium plating, spray platinum or nitriding treatment to it, to improve its wear resistance.Conventional cylinder liner structurally can be divided into dry liner and wet liner two kinds.The outer wall of dry liner does not directly contact with cooling medium, and usually with the centrifugal manufacture of alloy cast iron, wall thickness is 2-3mm.The cylinder liner good rigidity of this structure, quality is light, and sealing is convenient, and bore spacing is shorter, and Structure of Internal-Combustion Engine can be made compact; Its shortcoming is dismounting inconvenience, and maintenance difficult, cooling effect is poor, easily produces local deformation, and requirement on machining accuracy is high, and cost is high.The outer wall of wet liner directly contacts with cooling water, and radiating condition is good, and usually manufacture with High phosphorus alloys cast iron, wall thickness is 5-8mm.Wet liner rigidity is poor, easily leaks, but dismounting and easy to maintenance.
Disclose a kind of cylinder jacket of diesel engine in prior art, comprise cylinder liner body, cylinder liner body is provided with convex shoulder, on support, two water seal ring recess and lower support, convex shoulder is 120.5-121mm to the distance of water seal ring recess; Distance between two water seal ring recess (3) is: 11.5-12.5mm.This cylinder liner has enough Rigidity and strengths 3 can improve wear resistance and corrosion resistance; Accuracy of manufacturing is high; The reliability of reciprocating motion of the pistons can be ensured.But cylinder liner is along with the growth of service time, and easily produce knot carbon, operating time longer knot carbon is more, piston is the most stuck or by cylinder sleeve drawing crack, directly impact normally works, and for this reason, needs the knot carbon phenomenon in minimizing casing wall to increase work efficiency.
Summary of the invention
For above-mentioned technical problem, main purpose of the present invention is to provide a kind of cylinder jacket of diesel engine, and the present invention can prevent firing chamber casing wall and piston knot carbon, and the working life of air-casing is increased.
The technological scheme solved the problems of the technologies described above is as follows:
Cylinder jacket of diesel engine, comprises cylinder liner body, cylinder liner body is provided with convex shoulder, on support, two water seal ring recess and lower support, described cylinder liner body internal fixtion neck bush, the inside and outside surface of neck bush all applies one deck wear resistant carbide.
Have employed such scheme, described cylinder liner body internal fixtion neck bush, the inside and outside surface of neck bush all applies one deck wear resistant carbide.By the wear resistant carbide described in neck bush and surface thereof, firing chamber casing wall and piston knot carbon can be stopped, the working life of cylinder sleeve is increased.
Further, the two ends of described neck bush form the flange of bending, and neck bush is withheld on the end face of cylinder liner body by flange.This Placement makes neck bush be combined as a whole with cylinder liner body more securely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
1 is cylinder liner body, and 2 is convex shoulder, and 3 is upper support, and 4 is water seal ring recess, and 5 is lower support, and 6 is neck bush, and 7 is flange, and 8 is wear resistant carbide.
Embodiment
With reference to Fig. 1, cylinder jacket of diesel engine of the present invention, comprise cylinder liner body 1, cylinder liner body 1 is provided with convex shoulder 2, on support 3, two water seal ring recess 4 and lower support 5, described cylinder liner body 1 internal fixtion neck bush 6, the two ends of described neck bush form the flange 7 of bending, and neck bush 6 is withheld on the end face of cylinder liner body 1 by flange 7.The inside and outside surface of neck bush 6 all applies one deck wear resistant carbide 8.
Claims (2)
1. cylinder jacket of diesel engine, comprise cylinder liner body, cylinder liner body is provided with convex shoulder, on support, two water seal ring recess and lower support, it is characterized in that: described cylinder liner body internal fixtion neck bush, the inside and outside surface of neck bush all applies one deck wear resistant carbide.
2. cylinder jacket of diesel engine according to claim 1, is characterized in that: the two ends of described neck bush form the flange of bending, and neck bush is withheld on the end face of cylinder liner body by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379838.1A CN104421033A (en) | 2013-08-27 | 2013-08-27 | Cylinder sleeve of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379838.1A CN104421033A (en) | 2013-08-27 | 2013-08-27 | Cylinder sleeve of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104421033A true CN104421033A (en) | 2015-03-18 |
Family
ID=52970981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310379838.1A Pending CN104421033A (en) | 2013-08-27 | 2013-08-27 | Cylinder sleeve of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104421033A (en) |
-
2013
- 2013-08-27 CN CN201310379838.1A patent/CN104421033A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
|
| WD01 | Invention patent application deemed withdrawn after publication |