CN206111363U

CN206111363U - Improved generation wet -type engine cylinder cover

Info

Publication number: CN206111363U
Application number: CN201620666364.8U
Authority: CN
Inventors: 尤长青; 程荣泉; 曾兴华
Original assignee: QUANZHOU TEKUKE AUTOMOBILE PARTS CO Ltd
Current assignee: QUANZHOU TEKUKE AUTOMOBILE PARTS CO Ltd
Priority date: 2016-06-29
Filing date: 2016-06-29
Publication date: 2017-04-19
Anticipated expiration: 2026-06-29

Abstract

The utility model provides an improved generation wet -type engine cylinder cover, break through the structural form of traditional cylinder liner, a plurality of banding support fin at first can have along the effect of axis direction strengthening rib the cylinder liner body, consolidate the cylinder liner body, avoid thin cylinder liner body to take place to warp, especially, it takes place along the uplift of perpendicular to cylinder liner body axis direction or deformation such as sunken to avoid the cylinder liner body to do the time spent at the contact force that receives cylinderpiston reciprocating motion and high -temperature combustion gas's swelling pressure etc, thereby prevent along with the internal surface of live time extension cylinder liner body roughly gradually, cylinderpiston movement accuracy reduces even severe deformation gradually and the condition of unable work takes place, and support the fin and can show the surface area that increase cylinder liner body outer peripheral face, enlarge and the area of contact of coolant liquid, and then effectively strengthen the heat dispersion of cylinder liner body, prolong engine service life greatly.

Description

A kind of modified model wet type cylinder sleeve of engine

Technical field

This utility model is related to engine components field, and in particular to a kind of modified model wet type cylinder sleeve of engine.

Background technology

The structure of cylinder has been known, and its form substantially has three kinds：Depletion of QI cylinder sleeve type cylinder, wet type cylinder and dry type gas Cylinder.

The body of depletion of QI cylinder sleeve type cylinder does not inlay the body of any cylinder jacket, and cylinder is directly processed on body, Advantage can be shortening bore spacing, reduce cabinet size and quality.But it is relatively costly.

The cylinder jacket outer peripheral face of wet type cylinder and coolant directly contact, isolate coolant and cylinder work by cylinder sleeve completely Make room, using upper and lower locating ring band radial positioning is realized, axially position is propped up by cylinder jacket upper flange and body top are corresponding Bearing surface coordinates to be realized.The advantage of wet liner is the water jacket being not closed in cylinder block, easily casting, and wet liner leads to Chang Bihou can accomplish 5-8mm, conducting heat, cooling effect also preferably, Temperature Distribution is than on the basis of more uniform, it may have enough Intensity, and repair convenient, it is not necessary to electromotor is pulled down with regard to replaceable cylinder jacket from automobile.Have the disadvantage that integral rigidity is poor, Easily leak.

The cylinder jacket of dry cylinder is not contacted with coolant, and wall thickness is 2-3mm, outer surface and cylinder jacket seat bearing bore inner surface Must polish, with ensure necessary bit-type precision and be easy to dismounting.In order to obtain enough real contact areas and between cylinder body, Ensure that the radiating of cylinder sleeve and the inner surface of positioning, the outer surface of cylinder sleeve and the cylinder block bearing bore coordinated with it have certain processing Precision, the two typically adopts interference fit.The advantage of dry liner is that body rigidity is big, and bore spacing is little, light weight, plus Work process is simple.Have the disadvantage that heat transfer is poor, temperature distributing disproportionation is even, is susceptible to local deformation.

The application of wet type cylinder and dry cylinder is wide, but no matter wet type cylinder or dry cylinder are actually used During, all there is the situation that radiating is bad and intensity is not enough, especially the outer peripheral face radiating position of the cylinder jacket of wet type cylinder There are no auxiliary support apparatus, cylinder jacket is by the swollen of the reciprocating contact pressure of cylinder piston and high-temperature combustion gas Swelling pressure power etc. easily deforms when acting on, and is gradually lowered as use time extends so as to there is cylinder piston kinematic accuracy Even gross distortion and lead to not the situation of work, have a strong impact on and normally use, practicality has much room for improvement.

In consideration of it, inventor furthers investigate to the problems referred to above, there is this case to produce then.

Utility model content

The purpose of this utility model is to provide a kind of high strength and deformation, and service life is greatly prolonged, and is radiated Performance is significantly improved, practical modified model wet type cylinder sleeve of engine.

In order to achieve the above object, this utility model adopts such technical scheme：

A kind of modified model wet type cylinder sleeve of engine, including liner body, the outer peripheral face of the liner body with coolant The position of contact is formed with small diameter part, and it is arranged in parallel and by up to that the bottom of the small diameter part is formed with multiple circular liner bodies The support fin of the strip of lower extension.

It is described support fin cross section be by end to root gradually broaden it is trapezoidal.

The root of the support fin is with the junction of the small diameter part bottom by rounded corner transition.

The thickness for supporting fin is 0.5-4mm, is highly 3-5mm, the spacing of the adjacent support fin For 10-25mm.

After using above-mentioned technical proposal, modified model wet type cylinder sleeve of engine of the present utility model breaks through the structure of traditional cylinder sleeve Appearance formula, the support fin of multiple strips can play the role of first reinforcement in the axial direction to liner body, to cylinder sleeve Body is reinforced, it is to avoid relatively thin liner body deforms, and especially avoids liner body reciprocal by cylinder piston Occur along perpendicular to liner body axis direction when the contact pressure of motion and the bulbs of pressure of high-temperature combustion gas etc. are acted on Bending etc. deforms, so as to prevent as the inner surface of use time prolongation liner body is gradually coarse, cylinder piston fortune The situation that dynamic precision is gradually lowered even gross distortion and cannot work occurs；And support fin to significantly increase cylinder sleeve sheet The surface area of external side face, expands the contact area with coolant, and then the effectively heat dispersion of enhancing liner body, prolongs significantly Long service life of aeroengine.Compared with prior art, modified model wet type cylinder sleeve of engine of the present utility model, its intensity height is difficult Deformation, service life is greatly prolonged, and heat dispersion is significantly improved, practical.

Description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the broken section structural representation of this utility model use state；

Fig. 3 is cross-sectional structure schematic diagram of the present utility model.

In figure：

1- liner body 11- small diameter parts

2- supports fin 21- rounded corners.

Specific embodiment

In order to the technical solution of the utility model is explained further, it is described in detail below by specific embodiment.

A kind of modified model wet type cylinder sleeve of engine of the present utility model, as Figure 1-3, including liner body 1.

The outer peripheral face of liner body 1 is formed with small diameter part 11, the bottom shape of small diameter part 11 at the position contacted with coolant Into the support fin 2 of the strip for having multiple circular liner bodies 1 arranged in parallel and from top to bottom extending.This utility model is in reality During the use of border, the fin 2 that supports of multiple strips can have first the work of reinforcement in the axial direction to liner body 1 With reinforcing to liner body 1, it is to avoid relatively thin liner body 1 deforms, and especially avoids liner body 1 from being subject to There is edge when acting in bulbs of pressure of the reciprocating contact pressure of cylinder piston (not shown) and high-temperature combustion gas etc. Bending perpendicular to the axis direction of liner body 1 etc. deforms, so as to prevent as use time extends liner body 1 Inner surface is gradually coarse, the situation that cylinder piston kinematic accuracy is gradually lowered even gross distortion and cannot work occurs；And Support fin 2 to significantly increase the surface area of the outer peripheral face of liner body 1, expand the contact area with coolant, and then effectively Strengthen the heat dispersion of liner body 1, greatly prolong service life of aeroengine.

Preferably, support fin 2 cross section be by end to root gradually broaden it is trapezoidal.This structure is in enhancing On the basis of the support structural strength of fin 2, also make adjacent support produce inner small and outside big gap between fin 2, be easy to cold But outwards transmission is effectively radiated for the smooth turnover of liquid and heat.

Preferably, the root of support fin 2 and the junction of the bottom of small diameter part 11 are by rounded corner transition.This structure can be carried Height supports the overall surface smoothness of fin 2 and cylinder sleeve, is easy to the smooth cylinder liner surface that flows through of coolant effectively to be radiated, And stress concentration is not likely to produce, and bulk strength is improved, increase the service life.

In order to ensure supporting the intensity and heat dispersion of fin 2, the thickness for supporting fin 2 is 0.5-4mm, highly For 3-5mm, the spacing of adjacent support fin 2 is 10-25mm.The concrete thickness for supporting fin 2 can be 0.5,1,2,3 and 4mm, concrete height can be 3,3.5,4,4.5 and 5mm, the spacing of adjacent support fin 2 is 10,12,14,16,18,20, 22nd, 24 and 25mm.

Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out similar thinking to it Appropriate change is modified, and all be should be regarded as without departing from patent category of the present utility model.

Claims

1. a kind of modified model wet type cylinder sleeve of engine, including liner body, it is characterised in that：The outer peripheral face of the liner body exists The position contacted with coolant is formed with small diameter part, and it is arranged in parallel that the bottom of the small diameter part is formed with multiple circular liner bodies And the support fin of the strip for from top to bottom extending；The root of the support fin and the junction of the small diameter part bottom By rounded corner transition.

2. a kind of modified model wet type cylinder sleeve of engine according to claim 1, it is characterised in that：The support fin Cross section be by end to root gradually broaden it is trapezoidal.

3. a kind of modified model wet type cylinder sleeve of engine according to claim 1 and 2, it is characterised in that：It is described to support radiating The thickness of piece is 0.5-4mm, is highly 3-5mm, and the spacing of the adjacent support fin is 10-25mm.