CN215890226U

CN215890226U - Honing cylinder sleeve of two-stroke diesel engine

Info

Publication number: CN215890226U
Application number: CN202122271382.XU
Authority: CN
Inventors: 任枫; 李庆宇; 曹阳; 张澄宇; 张延超; 潘宁民; 王建磊; 李博; 杨萍
Original assignee: Xi'an Jiasheng Zhizao Technology Co ltd
Current assignee: Xi'an Jiasheng Zhizao Technology Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-22
Anticipated expiration: 2031-09-18

Abstract

The utility model relates to the technical field of engine honing cylinder sleeves, in particular to a two-stroke diesel engine honing cylinder sleeve which comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is fixedly sleeved on the outer side wall of the inner sleeve; the outer wall of the periphery of the bottom of the outer sleeve is fixedly connected with a bottom boss, and the inner side wall of the outer sleeve is provided with an exhaust hole; through being provided with the cooling tube, the device divide into outer sleeve and inner skleeve structure, wherein the inner skleeve is the cylinder liner body, and set up the cooling tube between outer sleeve and inner skleeve, and at the head and the tail both ends of cooling tube fixedly connected with feed liquor pipe and drain pipe respectively, and the import and export looks fixed connection of feed liquor pipe and drain pipe and transmission pump, through the coolant liquid of packing into toward the cooling tube, take away the heat on upper portion in the cylinder liner, and the cooling tube is the spiral pipe, the cooling tube is itself copper, make the heat conductivity of cooling tube itself good, the convenience transmits the outside heat of inner skleeve, cooling tube evenly distributed can evenly conduct heat and dispel the heat, guarantee the life of cylinder liner.

Description

Honing cylinder sleeve of two-stroke diesel engine

Technical Field

The utility model relates to the technical field of engine honing cylinder liners, in particular to a two-stroke diesel engine honing cylinder liner.

Background

One working cycle of the two-stroke engine is completed within one revolution of the crankshaft, i.e., the four steps of intake, compression, expansion and exhaust are completed within 360 crank angle degrees. The compression and expansion of such an engine is a relatively complete piston stroke and is therefore referred to as a two-stroke engine. The honing cylinder sleeve of the two-stroke diesel engine is called as an automobile cylinder sleeve for short, is embedded in a cylinder barrel of a cylinder body, and forms a combustion chamber together with a piston and a cylinder cover. The cylinder liners are classified into dry cylinder liners and wet cylinder liners. The cylinder sleeve with the back surface not contacted with the cooling water is called a dry cylinder sleeve, and the cylinder sleeve with the back surface contacted with the cooling water is a wet cylinder sleeve. The dry cylinder sleeve has the advantages of small thickness, simple structure and convenient processing. The wet cylinder sleeve directly contacts with cooling water, so that the cooling of the engine is facilitated, and the engine is small and light.

The existing honing cylinder sleeve mainly has the problems that heat is generated when the middle lower part of the cylinder sleeve rubs with a piston, the cylinder sleeve is of an integrated structure, the whole cylinder sleeve generates heat, particularly, the heat dissipation effect of the middle upper part is poor, the service life of the whole cylinder sleeve is shortened, and therefore a novel two-stroke diesel engine honing cylinder sleeve is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a two-stroke diesel engine honing cylinder sleeve to solve the problem that the heat dissipation performance of the upper part in the conventional honing cylinder sleeve is poor.

The above object of the present invention is achieved by the following technical solutions:

the honing cylinder sleeve of the two-stroke diesel engine comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is fixedly sleeved on the outer side wall of the inner sleeve; the outer wall of the periphery of the bottom of the outer sleeve is fixedly connected with a bottom boss, and the inner side wall of the outer sleeve is provided with an exhaust hole; be provided with the cooling tube between outer sleeve and the inner skleeve, the terminal fixedly connected with feed liquor pipe in cooling tube top, feed liquor pipe one end fixedly connected with drain pipe is kept away from to the cooling tube.

As the preferred technical scheme of the two-stroke diesel engine honing cylinder sleeve, mounting grooves are formed in the positions, corresponding to the radiating pipes, of the inner side wall of the outer sleeve and the outer side wall of the inner sleeve, and the outer sleeve and the inner sleeve are formed through hot pressing.

As the preferred technical scheme of the honing cylinder sleeve of the two-stroke diesel engine, the inner side wall of the inner sleeve is provided with the honing groove.

As the preferred technical scheme of the honing cylinder sleeve of the two-stroke diesel engine, the included angle between the honing grooves is 60 degrees.

As the preferred technical scheme of the honing cylinder sleeve of the two-stroke diesel engine, the number of the exhaust holes is three, and the included angle between every two adjacent groups of exhaust holes is 120 degrees.

As the preferable technical scheme of the honing cylinder sleeve for the two-stroke diesel engine, the radiating pipe is spiral and made of copper.

In summary, the utility model includes at least one of the following beneficial technical effects:

in the using process of the heat radiating device, the heat radiating device is divided into an outer sleeve and inner sleeve structure by arranging the heat radiating pipe, wherein the inner sleeve is a cylinder sleeve body, the heat radiating pipe is arranged between the outer sleeve and the inner sleeve, the head end and the tail end of the heat radiating pipe are respectively and fixedly connected with the liquid inlet pipe and the liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are fixedly connected with the inlet and the outlet of the transmission pump, sufficient cooling liquid is filled into the heat radiating pipe to take away heat of the upper part of the inner sleeve, namely the cylinder sleeve, and the heat radiating pipe is a spiral pipe and is made of copper, so that the heat conducting performance of the heat radiating pipe is good, the heat outside of the inner sleeve is convenient to transfer, the heat radiating pipe is uniformly distributed on the outer side wall of the inner sleeve, the heat conducting and the heat radiating can be uniform, and the service life of the cylinder sleeve is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a honing cylinder sleeve of a two-stroke diesel engine;

FIG. 2 is a schematic structural diagram of a two-stroke diesel engine honing cylinder sleeve in front view;

FIG. 3 is a schematic cross-sectional structure diagram of a honing cylinder sleeve of a two-stroke diesel engine;

FIG. 4 is a schematic view of the connection structure among the heat dissipation pipe, the liquid inlet pipe and the liquid outlet pipe.

In the figure: 1. an outer sleeve; 2. an inner sleeve; 3. honing the groove; 4. a liquid inlet pipe; 5. a liquid outlet pipe; 6. an exhaust hole; 7. a bottom boss; 8. a heat radiation pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the honing cylinder sleeve of the two-stroke diesel engine comprises an outer sleeve 1 and an inner sleeve 2, wherein the outer sleeve 1 is fixedly sleeved on the outer side wall of the inner sleeve 2; the outer wall of the periphery of the bottom of the outer sleeve 1 is fixedly connected with a bottom boss 7, and the inner side wall of the outer sleeve 1 is provided with an exhaust hole 6; a radiating pipe 8 is arranged between the outer sleeve 1 and the inner sleeve 2, the tail end of the top of the radiating pipe 8 is fixedly connected with a liquid inlet pipe 4, and one end of the radiating pipe 8, which is far away from the liquid inlet pipe 4, is fixedly connected with a liquid outlet pipe 5; the heat pipe 8 is spiral and the heat pipe 8 is made of copper.

Referring to fig. 1 and 2, specifically, before the engine is installed, an inlet pipe 4 is fixedly connected to an outlet of a prior art transfer pump, then an outlet pipe 5 is fixedly connected to an inlet of the prior art transfer pump, after the engine is installed with the device after ensuring the sealing performance, then a sufficient amount of coolant is injected into a radiating pipe 8 by using the prior art transfer pump, the transfer pump is started while the engine is in operation, when the prior art transfer pump is in operation, the coolant is transferred into the transfer pump from the outlet pipe 5, and then enters the radiating pipe 8 through the inlet pipe 4 again through the inlet of the transfer pump, a reciprocating cycle is formed, since the radiating pipe 8 is embedded between an outer sleeve 1 and an inner sleeve 2, that is, the radiating pipe 8 is sleeved outside the inner sleeve 2, heat on the outer side wall of the inner sleeve 2 can be effectively taken away, because the radiating pipe 8 is in a spiral shape, the radiating pipe 8 is made of copper, and the copper has certain heat conducting property, the heat conducting property of the radiating pipe 8 is good, the heat can be uniformly conducted on the outer side wall of the inner sleeve 2, the led heat is radiated through the reciprocating circulation of the cooling liquid, the heat generated on the outer side wall of the inner sleeve 2 is radiated, and the service life of the cylinder sleeve is effectively prolonged;

referring to fig. 3 and 4, specifically, mounting grooves are formed in positions of the inner side wall of the outer sleeve 1 and the outer side wall of the inner sleeve 2 corresponding to the radiating pipe 8, and the outer sleeve 1 and the inner sleeve 2 are formed by hot pressing to enhance the connection strength between the outer sleeve 1 and the inner sleeve 2; the inner side wall of the inner sleeve 2 is provided with a honing groove 3, a piston ring in an engine is supported by the inner wall of the cylinder sleeve to move, the groove for storing engine oil is timely supplemented with the engine oil to supply lubrication for a friction pair, the inner side wall of the inner sleeve 2 is uniformly provided with the honing groove 3, the purpose of fully lubricating the friction pair is achieved, the friction between the piston ring and the inner wall of the cylinder sleeve is reduced, the service lives of the cylinder sleeve and the piston ring are further prolonged, an included angle between the honing grooves 3 is 60 degrees, when the included angle between the honing grooves 3 is 60 degrees, the inner sleeve 2, namely the inner wall of the cylinder sleeve, is provided with an enough bearing surface and good oil holding property, the friction between the piston ring and the inner side wall of the cylinder sleeve is conveniently ensured to be reduced, the cylinder sleeve is enabled to have a short running-in period at the initial stage, and the use of the cylinder sleeve is facilitated. The number of the exhaust holes 6 is three, the included angle between every two adjacent groups of exhaust holes 6 is 120 degrees, so that the exhaust of waste gas and the entry of fresh gas are facilitated, and the ventilation is conveniently completed.

The utility model has the following use flow and working principle: when the cylinder sleeve is used, the liquid inlet pipe 4 and the liquid outlet pipe 5 at the head end and the tail end of the radiating pipe 8 are fixedly connected with the inlet and the outlet of the transmission pump in the prior art, sufficient cooling liquid is filled into the radiating pipe 8 through the transmission pump under the condition that the tightness of the connection between the radiating pipe 8 and the inlet and the outlet of the transmission pump is ensured, finally the device is installed into an engine, the transmission pump also needs to work together when the cylinder sleeve works, wherein the cooling liquid is circulated in the radiating pipe 8 through the liquid inlet pipe 4 and the liquid outlet pipe 5 in a reciprocating mode through the operation of the transmission pump, so that the heat on the outer side wall of the middle upper portion of the inner sleeve 2 is taken away, the problem of the work of the engine caused by the overheating of the cylinder sleeve is prevented, and the service life of the cylinder sleeve is prolonged.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The honing cylinder sleeve of the two-stroke diesel engine comprises an outer sleeve (1) and an inner sleeve (2), and is characterized in that the outer sleeve (1) is fixedly sleeved on the outer side wall of the inner sleeve (2);

the outer wall of the periphery of the bottom of the outer sleeve (1) is fixedly connected with a bottom boss (7), and the inner side wall of the outer sleeve (1) is provided with an exhaust hole (6);

be provided with cooling tube (8) between outer sleeve (1) and inner skleeve (2), cooling tube (8) top end fixedly connected with feed liquor pipe (4), feed liquor pipe (4) one end fixedly connected with drain pipe (5) are kept away from in cooling tube (8).

2. The two-stroke diesel engine honing cylinder liner as claimed in claim 1, wherein: the inner side wall of the outer sleeve (1) and the outer side wall of the inner sleeve (2) are provided with mounting grooves corresponding to the radiating pipe (8), and the outer sleeve (1) and the inner sleeve (2) are formed through hot pressing.

3. The two-stroke diesel engine honing cylinder liner as claimed in claim 1, wherein: honing grooves (3) are formed in the inner side wall of the inner sleeve (2).

4. The two-stroke diesel engine honing cylinder liner as claimed in claim 3, wherein: the included angle between the honing grooves (3) is 60 degrees.

5. The two-stroke diesel engine honing cylinder liner as claimed in claim 2, wherein: the number of the exhaust holes (6) is three, and the included angle between every two adjacent groups of exhaust holes (6) is 120 degrees.

6. The two-stroke diesel engine honing cylinder liner as claimed in claim 2, wherein: the radiating pipe (8) is spiral, and the radiating pipe (8) is made of copper.