CN103867328A

CN103867328A - Cylinder sleeve for medium speed diesel engine

Info

Publication number: CN103867328A
Application number: CN201410070445.7A
Authority: CN
Inventors: 冯霜; 陈世江; 卢德华; 张红学
Original assignee: YCSR SICHUAN ENGINE CO Ltd
Current assignee: YCSR SICHUAN ENGINE CO Ltd
Priority date: 2014-02-28
Filing date: 2014-02-28
Publication date: 2014-06-18

Abstract

The invention discloses a cylinder sleeve for a medium speed diesel engine. The cylinder sleeve comprises a cylinder sleeve body assembled in an engine body, wherein the bottom of the cylinder sleeve body is matched with the engine body, the top of the cylinder sleeve body is provided with a water passing sleeve with a flange, the outer wall of the bottom of the water passing sleeve is matched with the engine body, a water cavity is formed between the outer wall of the top of the cylinder sleeve body and the inner wall of the water passing sleeve, the flange of the water passing sleeve is provided with a plurality of water outlets communicated with the water cavity, and a cooling water cavity is formed by the outer wall of the middle of the cylinder sleeve body and the inner wall of the engine body and is communicated with the water cavity. The cylinder sleeve for the medium speed diesel engine is simple in structure and reasonable in design, and the cooling water cavity has a bigger water containing space, so that a better cooling effect is achieved.

Description

For the cylinder liner of medium speed diesel

Technical field

The invention belongs to Diesel Engine Technique Field, particularly relate to a kind of for the cylinder liner on diesel engine.

Background technique

Cylinder liner is one of most important parts on motor, and its main function is the firing chamber that jointly forms motor with cylinder head, piston, and interior surface of cylinder liner is subject to the direct effect of high-temperature high-pressure fuel gas and reciprocating piston lateral force, and its working environment is very severe.Along with the progress of technology, diesel engine strengthening degree improves gradually, and cylinder temperature and pressure also improve gradually, these variations certainly will allow engine heat load increase, thereby make the temperature drift of cylinder head and cylinder liner, and lubricating condition worsens, cylinder wear aggravation, oil consumption is excessive.

In cylinder operation process, need cylinder liner to carry out cooling, referring to Fig. 1, the cooling water chamber 3 of cylinder liner 1 is formed by the outer water jacket 2 of crossing of cylinder liner 1 and its at present, between cylinder liner 1 and mistake water jacket 2, form sealing cooling water chamber 3 by sealing, cross on water jacket 2 and have water intake, supply water to sealing cooling water chamber 3 by the intake pipe being connect by body water-supply line.But the cooling water chamber 3 in this cooling structure is too small, do not reach the cooling effect desirable to cylinder liner 1.

How to solve these technical problems and become the direction that these those skilled in the art make great efforts.

Summary of the invention

Object of the present invention is just to provide a kind of cylinder liner for medium speed diesel, can solve the problem that above-mentioned prior art exists completely.

Object of the present invention realizes by following technical proposals:

A kind of cylinder liner for medium speed diesel, comprise the cylinder liner being assemblied in body, cylinder liner bottom coordinates with body, flanged (FLGD) water jacket of crossing is installed at top, cross water jacket bottom outer wall and coordinate with body, between cylinder liner top exterior walls and mistake water jacket inwall, form water cavity, cross on water jacket flange and offer some osculums that communicate with water cavity, cylinder liner middle part outer wall and body inwall form cooling water chamber, and cooling water chamber is connected with water cavity.

As preferably, between cylinder liner outer wall and mistake water jacket inwall, be along the circumferential direction provided with some water inlets, cooling water chamber is communicated with water cavity.

As preferably, described cylinder liner top ports inwall is provided with wearing ring.

As preferably, interior surface of cylinder liner has cross hatch.

As preferably, between described water jacket excessively and cylinder liner, be provided with rubber seal, cross between water jacket and body and be provided with rubber seal, between cylinder liner bottom outer wall and body, be provided with rubber seal.

As preferably, described cylinder liner bottom is provided with some screws, crosses water jacket flange and is provided with the bolt hole for assembling cylinder head.

As preferably, the Sealed casing pipe with rubber seal glue is installed on described osculum.

Compared with prior art, beneficial effect of the present invention is:

1. simple in structure, reasonable in design, its cooling water chamber has larger water space capacity, thereby reaches better cooling effect;

2. arranging of wearing ring can effectively prevent from altering on machine oil, reduces machine oil oil consumption, can also prevent that the cylinder liner end mill phenomenon causing due to carbon distribution from occurring simultaneously;

3. interior surface of cylinder liner processes cross hatch by platform reticulate pattern honing technique, the little spike of interior surface of cylinder liner is ground off, surface outline curves approaches the cylinder-barrel surface after diesel running-in very much, this is for the film distribution that improves interior surface of cylinder liner, it is all very good reducing cylinder liner abrasion, and then improves cylinder liner working life;

4. cylinder liner bottom is provided with some screws, crosses water jacket flange and is provided with the bolt hole for assembling cylinder head, thereby be convenient to and cylinder head, power packages block installing/dismounting, has realized modular design;

5. cylinder liner and cross between water jacket and cylinder liner, cross between water jacket and body and form altogether triple seal, guarantees the sealability of water cavity and cooling water chamber, and sealing is reliable, avoids cooling water leakage.

Accompanying drawing explanation

Fig. 1 is prior art cylinder liner and the cooperating structure schematic diagram of crossing water jacket;

Fig. 2 is structural representation of the present invention;

Fig. 3 is the partial enlarged drawing at A place in Fig. 2;

Fig. 4 is the partial enlarged drawing at B place in Fig. 2;

Fig. 5 is the perspective view that cylinder liner coordinates with mistake water jacket;

Fig. 6 is the structural representation of cylinder liner bottom end.

Embodiment

Below in conjunction with specific embodiments and the drawings, the present invention is further illustrated.

As shown in Figures 2 to 6, a kind of cylinder liner for medium speed diesel, comprise the cylinder liner 1 being assemblied in body 4, cylinder liner 1 bottom coordinates with body 4, the water jacket 2 excessively of top mounting strap flange 5, crossing water jacket 2 bottom outer wall coordinates with body 4, between cylinder liner 1 top exterior walls and mistake water jacket 2 inwalls, form water cavity 6, cross and on water jacket flange 5, offer 12 osculums 7 that communicate with water cavity 6, cylinder liner 1 middle part outer wall and body 4 inwalls form cooling water chamber 3, between cylinder liner 1 outer wall and mistake water jacket 2 inwalls, be along the circumferential direction provided with 8 water inlets 8, cooling water chamber 3 is communicated with water cavity 6.

Described cylinder liner 1 top ports inwall is provided with wearing ring 9.Cylinder liner 1 internal surface processes cross hatch by platform reticulate pattern honing technique.

Referring to Fig. 2, Fig. 3 and Fig. 4, rubber seal 10 together with being provided with between described water jacket 2 excessively and cylinder liner 1, crosses between water jacket 2 and body 4 and is provided with twice rubber seal 10, is provided with three road rubber seal 10 between cylinder liner 1 bottom outer wall and body 4.

Referring to Fig. 6, described cylinder liner 1 bottom is provided with 12 screws 11 for the power packages block that forms power packages frock is installed, and crosses the bolt hole that water jacket flange 5 is provided with for assembling cylinder head.

Referring to Fig. 5, the Sealed casing pipe 12 with rubber seal glue is installed on described osculum 7, the cooling water after cooling air cylinder sleeve 1 upwards flows into cylinder head through Sealed casing pipe 12.

Above-mentioned cylinder liner 1 adopts alloy cast iron to make, and crosses water jacket 2 and adopts No. 20 Fine Steel Casting irons to make.

Cylinder liner 1 outer wall of the present invention directly with body 4 cylinder hole inwalls formation cooling water chambeies 3, its cooling water chamber 3 has larger water space capacity, thereby can reach better cooling effect.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims

1. the cylinder liner for medium speed diesel, comprise the cylinder liner being assemblied in body, cylinder liner bottom coordinates with body, flanged (FLGD) water jacket of crossing is installed at top, cross water jacket bottom outer wall and coordinate with body, between cylinder liner top exterior walls and mistake water jacket inwall, form water cavity, cross on water jacket flange and offer some osculums that communicate with water cavity, it is characterized in that: cylinder liner middle part outer wall and body inwall form cooling water chamber, and cooling water chamber is connected with water cavity.

2. the cylinder liner for medium speed diesel according to claim 1, is characterized in that: between cylinder liner outer wall and mistake water jacket inwall, be along the circumferential direction provided with some water inlets, cooling water chamber is communicated with water cavity.

3. the cylinder liner for medium speed diesel according to claim 1, is characterized in that: described cylinder liner top ports inwall is provided with wearing ring.

4. the cylinder liner for medium speed diesel according to claim 1, is characterized in that: interior surface of cylinder liner has cross hatch.

5. the cylinder liner for medium speed diesel according to claim 1, it is characterized in that: described mistake between water jacket and cylinder liner is provided with rubber seal, cross between water jacket and body and be provided with rubber seal, between cylinder liner bottom outer wall and body, be provided with rubber seal.

6. the cylinder liner for medium speed diesel according to claim 1, is characterized in that: described cylinder liner bottom is provided with some screws, crosses water jacket flange and is provided with the bolt hole for assembling cylinder head.

7. the cylinder liner for medium speed diesel according to claim 1, is characterized in that: the Sealed casing pipe with rubber seal glue is installed on described osculum.