Cylinder sleeve of internal combustion engine

Abstract

The utility model discloses an internal combustion engine cylinder sleeve, which relates to the technical field of cylinder sleeve cooling appliances and comprises a connecting sleeve, a heat conducting sleeve for transferring temperature is arranged on the outer side wall of the connecting sleeve, a cooling liquid storage box is arranged on the outer side wall of the heat conducting sleeve, and a liquid inlet pipe for leading in low-temperature cooling liquid is arranged on the upper portion of the cooling liquid storage box. Through the arrangement of the cooling liquid storage box, cooling liquid can be better guided into the cooling liquid transmission pipe, and the cooling effect of the device is improved through heat conduction of the heat conduction connecting plate; a cooling liquid conveying pipe is spirally and fixedly connected to the outer side wall of the heat conduction sleeve in a threaded mode, a liquid inlet hole used for communicating with the upper end of the cooling liquid conveying pipe is formed in the upper end of the inner side wall of the cooling liquid storage box, and a liquid outlet hole used for communicating with the lower end of the cooling liquid conveying pipe is formed in the lower end of the inner side wall of the cooling liquid storage box; and the heat conduction sleeve can be better cooled by arranging the cooling liquid transmission pipe which is coiled on the outer side of the heat conduction sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder sleeve cooling appliances, in particular to an internal combustion engine cylinder sleeve. Background Technique

[0002] A cylinder liner is a sleeve installed inside the cylinder bore of an internal combustion engine, used to protect the cylinder wall from wear and other damages; it is usually made of high-quality forged steel, carbon steel or cast iron, and has good wear resistance and corrosion resistance.

[0003] At present, the cooling of the existing cylinder sleeve mostly uses an outwardly convex heat dissipation plate combination to cool the sleeve. The heat dissipation plates are mostly equidistantly distributed. The equidistantly distributed heat dissipation plates will cause variable temperature differences at the intervals, reducing the service life of the working piston; therefore, this application designs an internal combustion engine cylinder sleeve to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an internal combustion engine cylinder sleeve.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an internal combustion engine cylinder sleeve, including a connecting sleeve, a heat conduction sleeve for transferring temperature is arranged on the outer side wall of the connecting sleeve, a coolant storage box is arranged on the outer side wall of the heat conduction sleeve, a liquid inlet pipe for introducing low-temperature coolant is arranged on the upper part of the coolant storage box, and a liquid outlet pipe for discharging high-temperature coolant is arranged on the lower part of the coolant storage box.

[0006] Preferably, a coolant transfer pipe is spirally and fixedly connected to the outer side wall of the heat conduction sleeve, a liquid inlet hole for communicating with the upper end of the coolant transfer pipe is opened at the upper end of the inner side wall of the coolant storage box, and a liquid outlet hole for communicating with the lower end of the coolant transfer pipe is opened at the lower end of the inner side wall of the coolant storage box.

[0007] Preferably, several heat conduction connecting plates are convexly arranged on the outer side wall of the heat conduction sleeve at equal intervals. One end of the heat conduction connecting plate is welded to the outer side wall of the heat conduction connecting plate, and the other end of the heat conduction connecting plate is inserted into the interior of the coolant storage box.

[0008] Preferably, a positioning shoulder for positioning and clamping is arranged on the top surface of the connecting sleeve.

[0009] Preferably, the connecting sleeve is divided into a first protective phosphating film, a support cylinder and a second protective phosphating film. The first protective phosphating film is located on the inner wall of the support cylinder, and the second protective phosphating film is located on the outer wall of the support cylinder and is tightly pressed against the heat conduction sleeve.

[0010] Preferably, the heat conduction connecting plate is composed of a copper plate with high heat conduction performance, and the coolant transfer pipe is composed of a copper pipe with high heat conduction performance.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the present utility model, through the setting of the coolant storage box, the coolant can be better introduced into the coolant transmission pipe, and the heat conduction of the heat conduction connecting plate can improve the cooling effect of the device. By arranging the coolant transmission pipe spirally outside the heat conduction sleeve, the heat conduction sleeve can be better cooled, and the difference in the cooling effect at each place is reduced, reducing the influence of the cooling inside the connecting sleeve on the piston. By arranging the heat conduction connecting plate inserted into the coolant storage box, the contact conduction area of the coolant can be increased, thereby improving the cooling effect of the device. Through the setting of the positioning shoulder, the connecting sleeve can be better positioned, facilitating the fixed installation of the connecting sleeve. Through the setting of the first protective phosphating film, the connection airtightness between the piston extending into the connecting sleeve and the connecting sleeve can be improved. Through the setting of the second protective phosphating film, the connecting sleeve can be better pressed, preventing the connecting sleeve from rotating and loosening. By using a copper material with better heat conduction effect, the heat conduction performance of the device can be better improved, and the working temperature of the connecting sleeve is maintained through the cooling effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0013] Figure 1 is a schematic three-dimensional structure diagram of the whole proposed by the present utility model;

[0014] Figure 2 is a schematic three-dimensional sectional structure diagram of the whole proposed by the present utility model;

[0015] Figure 3 is a schematic three-dimensional structure diagram of the connecting sleeve proposed by the present utility model;

[0016] Figure 4 is a schematic enlarged three-dimensional structure diagram of Structure A proposed by the present utility model;

[0017] Figure 5 is a schematic three-dimensional structure diagram of the coolant storage box proposed by the present utility model.

[0018] Reference numerals in the drawings: 1, coolant storage box; 2, heat conduction sleeve; 3, connecting sleeve; 4, heat conduction connecting plate; 5, coolant transmission pipe; 6, positioning shoulder; 7, first protective phosphating film; 8, support cylinder; 9, second protective phosphating film; 10, liquid inlet hole; 11, liquid inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Embodiment: Refer to Figures 1-5 , an internal combustion engine cylinder sleeve in the present utility model includes a connecting sleeve 3. A heat conducting sleeve 2 for transferring temperature is provided on the outer side wall of the connecting sleeve 3. A coolant storage box 1 is provided on the outer side wall of the heat conducting sleeve 2. An inlet pipe 11 for introducing low-temperature coolant is provided at the upper part of the coolant storage box 1. A liquid outlet pipe for discharging high-temperature coolant is provided at the lower part of the coolant storage box 1. Through the setting of the coolant storage box 1, the coolant can be better introduced into the coolant transmission pipe 5, and the cooling effect of the device can be improved by the heat conduction of the heat conducting connecting plate 4; a coolant transmission pipe 5 is spirally and fixedly connected to the outer side wall of the heat conducting sleeve 2. An inlet hole 10 for communicating with the upper end of the coolant transmission pipe 5 is opened at the upper end of the inner side wall of the coolant storage box 1. An outlet hole for communicating with the lower end of the coolant transmission pipe 5 is opened at the lower end of the inner side wall of the coolant storage box 1. By arranging the coolant transmission pipe 5 spirally on the outer side of the heat conducting sleeve 2, the heat conducting sleeve 2 can be better cooled; several heat conducting connecting plates 4 are equidistantly convexly provided on the outer side wall of the heat conducting sleeve 2. One end of the heat conducting connecting plate 4 is welded to the outer side wall of the heat conducting connecting plate 4, and the other end of the heat conducting connecting plate 4 is inserted into the inside of the coolant storage box 1. By arranging the heat conducting connecting plates 4 inserted into the coolant storage box 1, the contact conduction area of the coolant can be increased, thereby improving the cooling effect of the device.

[0021] In the present utility model, a positioning shoulder 6 for positioning and clamping is provided on the top surface of the connecting sleeve 3. Through the setting of the positioning shoulder 6, the connecting sleeve 3 can be better positioned, facilitating the fixed installation of the connecting sleeve 3; the connecting sleeve 3 is divided into a first protective phosphating film 7, a support cylinder 8 and a second protective phosphating film 9. The first protective phosphating film 7 is located on the inner wall of the support cylinder 8. The second protective phosphating film 9 is located on the outer wall of the support cylinder 8 and is tightly pressed against the heat conducting sleeve 2. Through the setting of the first protective phosphating film 7, the connection airtightness between the piston extending into the connecting sleeve 3 and the connecting sleeve 3 can be improved. Through the setting of the second protective phosphating film 9, the connecting sleeve 3 can be better pressed, preventing the connecting sleeve 3 from rotating and loosening; the heat conducting connecting plate 4 is composed of a copper plate with relatively high heat conductivity, and the coolant transmission pipe 5 is composed of a copper pipe with relatively high heat conductivity. By using copper materials with better heat conduction effects, the heat conduction performance of the device can be better improved, and the working temperature of the connecting sleeve 3 can be maintained through the cooling effect of the device.

[0022] Working principle: When the present utility model is in use, first, low-temperature coolant is introduced into the liquid inlet pipe 11 of the coolant storage box 1. Subsequently, part of the coolant flows through the liquid inlet hole 10 to the coolant transmission pipe 5. The coolant transmission pipe 5 spiraling outside the heat conduction sleeve 2 can better cool the heat conduction sleeve 2. Part of the coolant flows in the coolant storage box 1. When the coolant flows in the coolant storage box 1, it will cool the heat conduction sleeve 2 through the heat conduction effect of the heat conduction connecting plate 4. The heat conduction connecting plate 4 inserted into the coolant storage box 1 can increase the contact conduction area of the coolant, thereby improving the cooling effect of the device, reducing the working temperature of the connecting sleeve 3. Finally, the high-temperature coolant merges and flows out of the coolant storage box 1 through the liquid outlet pipe, and thus the working temperature reduction of the internal combustion engine cylinder sleeve ends.

[0023] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A cylinder sleeve of an internal combustion engine, comprising a connecting sleeve (3), characterized in that: The outer wall of the connecting sleeve (3) is provided with a heat-conducting sleeve (2) for transferring temperature, the outer wall of the heat-conducting sleeve (2) is provided with a coolant storage box (1), the upper part of the coolant storage box (1) is provided with a liquid inlet pipe (11) for introducing low-temperature coolant, and the lower part of the coolant storage box (1) is provided with a liquid outlet pipe for conducting high-temperature coolant; The outer wall of the heat-conducting sleeve (2) is spirally connected with a coolant transmission pipe (5), the upper end of the inner wall of the coolant storage box (1) is provided with a liquid inlet hole (10) for connecting to the upper end of the coolant transmission pipe (5), and the lower end of the inner wall of the coolant storage box (1) is provided with a liquid outlet hole for connecting to the lower end of the coolant transmission pipe (5); A plurality of heat-conducting connecting plates (4) are equidistantly protruded from the outer wall of the heat-conducting sleeve (2), one end of the heat-conducting connecting plate (4) is welded to the outer wall of the heat-conducting connecting plate (4), and the other end of the heat-conducting connecting plate (4) is inserted into the interior of the coolant storage box (1).

2. The internal combustion engine cylinder sleeve according to claim 1, characterized in that: The top surface of the connecting sleeve (3) is provided with a positioning boss (6) for positioning and clamping.

3. The internal combustion engine cylinder sleeve according to claim 2, characterized in that: The connecting sleeve (3) is divided into a first protective phosphate film (7), a supporting sleeve (8) and a second protective phosphate film (9); the first protective phosphate film (7) is located on the inner wall of the supporting sleeve (8), and the second protective phosphate film (9) is located on the outer wall of the supporting sleeve (8) and is pressed tightly against the heat-conducting sleeve (2).

4. The internal combustion engine cylinder sleeve according to claim 3, characterized in that: The heat-conducting connecting plate (4) is composed of a copper plate with high thermal conductivity, and the cooling liquid transmission pipe (5) is composed of a copper pipe with high thermal conductivity.

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