CN213899105U

CN213899105U - Small-circulation water cooling system of engine

Info

Publication number: CN213899105U
Application number: CN202023139519.8U
Authority: CN
Inventors: 周鹏博; 邓定红; 张立成; 程雪君; 李良
Original assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Current assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-06
Anticipated expiration: 2030-12-23

Abstract

The utility model provides an engine small circulation water cooling system belongs to engine technical field. The problem that an existing engine water cooling system is poor in cooling effect is solved. The engine comprises a cylinder body, wherein the small-circulation water cooling system comprises a box body water jacket, a cylinder cover water jacket, a water inlet water jacket, a water outlet water jacket and a plurality of communicating water jackets, the box body water jacket and the cylinder cover water jacket are positioned in the cylinder body and communicated through the communicating water jackets arranged at intervals, the box body water jacket is in a flat ring shape, the water inlet water jacket is positioned in the middle of one side of the box body water jacket, and the water outlet water jacket is communicated with the center of the cylinder cover water jacket. The small circulation water cooling system of the engine has the advantage of good cooling effect.

Description

Small-circulation water cooling system of engine

Technical Field

The utility model belongs to the technical field of the engine, a little circulating water cooling system of engine is related to.

Background

The cooling system of the automobile engine has the main function of timely dissipating partial heat absorbed by heated parts, and ensures that the engine works in an optimum temperature state. The automobile engine cooling system takes water as a cooling medium and comprises a small circulation water cooling system and a large circulation water cooling system.

For example, chinese patent literature discloses a small circulation cooling system for an engine [ application No.: 201720169132.6, respectively; authorization notice number: CN206707840U ], which comprises an engine cylinder cooling water jacket, a small circulation water outlet pipeline, a cylinder water cooling circulation water inlet and a thermostat, wherein one end of the small circulation water outlet pipeline is connected to the engine cylinder cooling water jacket near the cylinder water cooling circulation water inlet, the other end of the small circulation water outlet pipeline is connected to the thermostat, and the small circulation water outlet is arranged on the cooling water jacket around the first cylinder hole of the cylinder.

The small circulation cooling system with the structure shortens the small circulation water path, and enables the water jacket to be compactly arranged. However, in the small circulation cooling system with the structure, the cylinder cooling water jacket surrounds the cylinder hole of the cylinder, the water inlet and the water outlet pipeline are both communicated with the side part of the cylinder cooling water jacket, the water inlet is positioned at one end of the cylinder cooling water jacket, so that cooling water enters from the water inlet and circulates around the cylinder cooling water jacket for a circle and then flows out from the water outlet pipeline, namely the cooling water successively passes through different cylinder holes, the temperature of the cooling water which just enters into the cylinder cooling water jacket is the lowest, after the cooling water passes through the first cylinder hole, the temperature of the cooling water is raised due to heat exchange, the temperature of the cooling water passes through the second cylinder hole and is raised again, namely the temperature of the cooling water passing through different cylinder holes is different, so that the temperature of the cylinder at different cylinder holes has a certain difference, the temperature difference is higher, and the cooling effect is poorer.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide an engine small circle water cooling system, the technical problem of solution is how to improve the cooling effect of engine.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an engine small circulation water cooling system, engine include the cylinder body, and small circulation water cooling system is including box water jacket, cylinder cap water jacket, the water jacket that intakes, the water jacket that goes out and a plurality of intercommunication water jacket that are arranged in the cylinder body, its characterized in that, box water jacket and cylinder cap water jacket set up through the interval the intercommunication water jacket is linked together, the box water jacket is flat annular, the water jacket that intakes is located the centre department of box water jacket one side, the water jacket that goes out is linked together with the center of cylinder cap water jacket.

The water jacket of the tank body is flat and annular, the water inlet jacket is positioned in the middle of one side of the water jacket of the tank body, cooling water enters the water jacket of the tank body from the water inlet jacket and then flows in a semi-annular mode along the water jacket of the tank body, the cooling water in the water jacket of the tank body enters the water jacket of the cylinder cover through the communicating water jacket, the arrangement of the communicating water jacket ensures that the water volume of the cooling water at each edge of the water jacket of the cylinder cover is as consistent as possible when the cooling water in the water jacket of the tank body enters the water jacket of the cylinder cover, the center of the water jacket of the cylinder cover is communicated with the water outlet jacket, so that the cooling water in the water jacket of the cylinder cover flows from the edge to the center and finally flows out from the water outlet jacket. The water inlet jacket is positioned in the middle of one side of the water jacket of the box body, the center of the water jacket of the cylinder cover is connected with the water outlet jacket, so that the flow speed and the flow direction of cooling water of the small-circulation water cooling system are symmetrical, the flowing stroke of the cooling water is short, the cooling water cools the cylinder body and the combustion chamber more uniformly, the temperature difference between the cylinder body and each part of the combustion chamber is small, the cooling effect of the engine is improved, the engine is balanced and stable in working, and the performance of the engine is improved.

In the small-circulation water cooling system for the engine, the cylinder cover water jacket comprises an annular external water jacket and an internal water jacket located in the external water jacket, the external water jacket is partially arranged along the box water jacket, the external water jacket is connected with the box water jacket through a communication water jacket, and the center of the internal water jacket is communicated with the water outlet water jacket. The flat annular box body water jacket and the annular external water jacket are used for matching with the structure of the combustion chamber to play a better role in uniformly cooling the combustion chamber; the structure of the cylinder cover water jacket ensures that cooling water flows from the edge to the center, so that the flow of the cooling water is as consistent as possible, the cooling effect of the cooling water is as uniform as possible, and the cooling effect of the engine is improved.

In the small-cycle water cooling system for the engine, the box water jacket is arranged in a bilateral symmetry mode by taking the center of the cylinder cover water jacket as a center, the cylinder cover water jacket is arranged in a bilateral symmetry mode by taking the center of the cylinder cover water jacket as a center, and all the communicating water jackets are arranged in a bilateral symmetry mode by taking the center of the cylinder cover water jacket as a center. The flow speed and the flow direction of cooling water in the box body water jacket, the cylinder cover water jacket and the communicating water jacket are symmetrical as much as possible, a better cooling effect is achieved, the temperature difference between the cylinder body and each part of the combustion chamber is small, the cooling effect of the engine is improved, the engine is balanced and stable in working, and the performance of the engine is improved.

In the small-circulation water cooling system for the engine, the cylinder body is provided with an exhaust hole, and the water inlet water jacket and the water outlet water jacket extend to the exhaust hole. The temperature of the gas discharged from the exhaust hole is high, so that the temperature of the cylinder body at the exhaust hole is relatively high, the water inlet water jacket and the water outlet water jacket both extend to the exhaust hole to cool the exhaust hole, the temperature of each part of the cylinder body is uniform as much as possible, and the cooling effect of the engine is improved.

In the small-cycle water cooling system of the engine, the cylinder block is provided with a plurality of cylinder holes, and the water jacket part of the box body is arranged in a concave manner and is embedded between two adjacent cylinder holes. The space is reasonably utilized, the cooling area is increased, and the cooling effect of the engine is improved.

In the small-circulation water cooling system for the engine, the water inlet jacket comprises a first branch water jacket and a second branch water jacket, the tank body water jacket comprises a section of annular water jacket with an opening, the annular water jacket is embedded between two adjacent cylinder holes, and the first branch water jacket and the second branch water jacket are respectively communicated with two ends of the opening of the annular water jacket. The water inlet jacket is divided into a first branch water jacket and a second branch water jacket, and an annular water jacket is arranged between the first branch water jacket and the second branch water jacket, so that cooling water can better flow towards two sides, the flow speed and the flow stability of the cooling water are improved, and the cooling effect of the cooling water is improved; meanwhile, an avoiding space is formed by the arrangement of the annular water jacket, so that a shaft or other parts in the engine can be penetrated, the space is reasonably utilized, all parts are reasonably arranged, and the engine is compact in structure.

In the small-circulation water cooling system for the engine, the water outlet jacket is provided with an avoidance channel, the water outlet jacket is divided into two parts at the avoidance channel, the two parts are symmetrically arranged, and the avoidance channel is arranged opposite to the cavity in the annular water jacket. The avoidance channel is matched with the annular water jacket for use, so that a shaft or other parts in the engine can penetrate through the avoidance channel, the space is reasonably utilized, all parts are reasonably arranged, and the engine is compact in structure.

In foretell engine microcirculation water cooling system, wear to be equipped with the balance shaft in the cylinder body, the lateral part of cylinder body is equipped with the water pump, the balance shaft links to each other with the water pump just the balance shaft can drive the water pump rotation, the delivery port and the water jacket of intaking of water pump are linked together, the water inlet and the water jacket of going out of water pump are linked together. The water pump works to realize the circulating flow of cooling water, the water pump is directly driven to work through a balance shaft in the engine, the transmission efficiency is high, and the stability is reliable.

In the small-circulation water cooling system for the engine, the sum of the depths of the cylinder cover water jacket, the communication water jacket and the box body water jacket is 30-50 mm. The water jacket depth of the small circulation water cooling system is low, so that idling warming is facilitated, and discharging is facilitated.

In the small-circulation water cooling system for the engine, the depth of the water jacket of the box body is greater than that of the water jacket of the cylinder cover. The structure can better guide the flow of cooling water and improve the cooling effect of the engine.

Compared with the prior art, the utility model provides a pair of little circulating water cooling system of engine has following advantage:

1. the water jacket of the small circulation water cooling system is arranged to enable the flow rate and the flow direction of cooling water to be symmetrical, the cooling effect of the cooling water on each part of each cylinder hole is consistent, the temperature difference of each cylinder hole is small, the combustion chamber is cooled well, the cooling effect of the engine is improved, the engine is balanced and stable in working, and the performance of the engine is improved.

2. When the water jacket of the small circulation water cooling system is arranged, the space is reasonably utilized, the occupied space is small, and the structure is compact; meanwhile, the depth of the water jacket is shallow, so that idling warming is facilitated, and discharging is facilitated.

Drawings

FIG. 1 is a schematic diagram I of the overall arrangement of a water jacket of the small-cycle water cooling system of the engine.

FIG. 2 is a schematic diagram II of the overall arrangement of the water jacket of the small-circulation water cooling system of the engine.

FIG. 3 is a schematic structural diagram of a cylinder body of the small-circulation water cooling system of the engine.

FIG. 4 is a schematic structural diagram of a water jacket of a box body of the small-circulation water cooling system of the engine.

FIG. 5 is a schematic structural diagram of the communicating water jacket of the small-circulation water cooling system of the engine.

FIG. 6 is a sectional view of the small-cycle water cooling system of the engine taken along the direction of FIG. 5A-A.

In the figure, 1, a cylinder body; 2. a water jacket of the box body; 21. an annular water jacket; 3. a cylinder cover water jacket; 31. an external water jacket; 32. an internal water jacket; 4. a water inlet jacket; 41. a first branch water jacket; 42. a second branch water jacket; 5. a water outlet jacket; 6. the water jacket is communicated; 7. an exhaust hole; 8. a cylinder bore; 9. avoiding the channel; 10. a balance shaft; 11. and (4) a water pump.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the engine comprises a cylinder body 1, a balance shaft 10 and a water pump 11, wherein a small circulation water cooling system is positioned in the cylinder body 1, and comprises a box body water jacket 2, a cylinder cover water jacket 3, a water inlet water jacket 4, a water outlet water jacket 5 and a communication water jacket 6.

The balance shaft 10 penetrates through the cylinder body 1, the water pump 11 is fixedly connected to the side portion of the cylinder body 1, the balance shaft 10 is connected with the water pump 11, the balance shaft 10 can drive the water pump 11 to rotate, the water outlet of the water pump 11 is communicated with the water inlet jacket 4, and the water inlet of the water pump 11 is communicated with the water outlet jacket 5.

As shown in fig. 5, in the present embodiment, the case water jacket 2 and the head water jacket 3 are communicated by eleven communication water jackets 6 arranged at intervals, and in actual production, the number of the communication water jackets 6 may be eight or fourteen. The cylinder head water jacket 3 comprises an outer water jacket 31 in a ring shape and an inner water jacket 32 positioned in the outer water jacket 31, the outer water jacket 31 is partially arranged along the box water jacket 2, the outer water jacket 31 is connected with the box water jacket 2 through a communication water jacket 6, and the center of the inner water jacket 32 is communicated with the water outlet water jacket 5. The tank body water jackets 2 are arranged in bilateral symmetry with the center of the cylinder cover water jacket 3 as a center, the cylinder cover water jackets 3 are arranged in bilateral symmetry with the center of the cylinder cover water jacket 3 as a center, and all the communicating water jackets 6 are arranged in bilateral symmetry with the center of the cylinder cover water jacket 3 as a center. The depth of the tank body water jacket 2 is greater than that of the cylinder cover water jacket 3, in the embodiment, the sum of the depths of the cylinder cover water jacket 3, the communication water jacket 6 and the tank body water jacket 2 is 40mm, and in actual production, the sum of the depths of the cylinder cover water jacket 3, the communication water jacket 6 and the tank body water jacket 2 can be 30mm or 50 mm.

As shown in fig. 4, the tank water jacket 2 is in a flat ring shape, the water inlet water jacket 4 is located in the middle of one side of the tank water jacket 2, in this embodiment, the cylinder block 1 has two cylinder holes 8, the tank water jacket 2 is partially recessed and inserted between two adjacent cylinder holes 8, the water inlet water jacket 4 includes a first branch water jacket 41 and a second branch water jacket 42, the tank water jacket 2 includes a section of annular water jacket 21 in an open ring shape, the annular water jacket 21 is inserted between two adjacent cylinder holes 8, the first branch water jacket 41 and the second branch water jacket 42 are respectively communicated with two ends of the opening of the annular water jacket 21, and in actual production, the number of the cylinder holes 8 may be three or four. As shown in fig. 6, the water outlet jacket 5 is communicated with the center of the cylinder head water jacket 3, an avoiding channel 9 is arranged in the water outlet jacket 5, the water outlet jacket 5 is divided into two parts at the avoiding channel 9, the two parts are symmetrically arranged, and the avoiding channel 9 is arranged opposite to the cavity inside the annular water jacket 21.

The cylinder body 1 is provided with exhaust holes 7, the water inlet jacket 4 and the water outlet jacket 5 both extend to the exhaust holes 7, in the embodiment, the number of the exhaust holes 7 is two, and the water inlet jacket 4 and the water outlet jacket 5 are positioned between the two exhaust holes 7.

When the water cooling device works, the balance shaft 10 drives the water pump 11 to rotate, the water pump 11 sends cooling water into the box body water jacket 2 through the water inlet water jacket 4, then the cooling water enters the edge of the cylinder cover water jacket 3 through the communicating water jacket 6, the cooling water flows to the water outlet in the center of the cylinder cover water jacket 3 from the edge of the cylinder cover water jacket 3 and then flows to the water pump 11 through the water outlet water jacket 5, and small-circulation flowing cooling of the cooling water is achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms of the cylinder block 1, the case water jacket 2, the annular water jacket 21, the head water jacket 3, the outer water jacket 31, the inner water jacket 32, the water inlet water jacket 4, the first branch water jacket 41, the second branch water jacket 42, the water outlet water jacket 5, the communication water jacket 6, the exhaust hole 7, the cylinder hole 8, the escape passage 9, the balance shaft 10, the water pump 11, and the like are used more largely herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an engine small circulation water cooling system, engine include cylinder body (1), and small circulation water cooling system is including box water jacket (2), cylinder cap water jacket (3), the water jacket (4) of intaking, play water jacket (5) and a plurality of intercommunication water jacket (6) that are arranged in cylinder body (1), its characterized in that, box water jacket (2) and cylinder cap water jacket (3) set up through the interval intercommunication water jacket (6) are linked together, box water jacket (2) are flat ring shape, intake water jacket (4) are located the centre department of box water jacket (2) one side, it is linked together with the center of cylinder cap water jacket (3) to go out water jacket (5).

2. The small-cycle water cooling system for the engine as claimed in claim 1, wherein the cylinder head water jacket (3) comprises an annular outer water jacket (31) and an inner water jacket (32) positioned in the outer water jacket (31), the outer water jacket (31) is partially arranged along the box body water jacket (2) and the outer water jacket (31) is connected with the box body water jacket (2) through a communication water jacket (6), and the center of the inner water jacket (32) is communicated with the water outlet water jacket (5).

3. The small-cycle water cooling system for the engine according to claim 1, wherein the tank water jacket (2) is arranged in bilateral symmetry with the center of the cylinder head water jacket (3) as a center, the cylinder head water jacket (3) is arranged in bilateral symmetry with the center of the cylinder head water jacket (3) as a center, and all the communication water jackets (6) are arranged in bilateral symmetry with the center of the cylinder head water jacket (3) as a center.

4. The small-cycle water cooling system for the engine as claimed in claim 1, 2 or 3, wherein the cylinder block (1) is provided with an exhaust hole (7), and the water inlet jacket (4) and the water outlet jacket (5) both extend to the exhaust hole (7).

5. The small-cycle water cooling system of the engine as claimed in claim 1, 2 or 3, wherein the cylinder block (1) is provided with a plurality of cylinder holes (8), and the box water jacket (2) is partially recessed and embedded between two adjacent cylinder holes (8).

6. The small-cycle water cooling system for the engine as claimed in claim 1, 2 or 3, wherein the water inlet jacket (4) comprises a first branch water jacket (41) and a second branch water jacket (42), the box water jacket (2) comprises a section of annular water jacket (21) in an open ring shape, the annular water jacket (21) is embedded between two adjacent cylinder bores (8), and the first branch water jacket (41) and the second branch water jacket (42) are respectively communicated with two ends at the opening of the annular water jacket (21).

7. The small-circulation water cooling system for the engine as claimed in claim 6, wherein the water outlet jacket (5) is provided with an avoiding channel (9), the water outlet jacket (5) is divided into two parts at the avoiding channel (9), the two parts are symmetrically arranged, and the avoiding channel (9) is arranged opposite to the cavity inside the annular water jacket (21).

8. The small-circulation water cooling system for the engine according to claim 1, 2 or 3, characterized in that a balance shaft (10) penetrates through the cylinder body (1), a water pump (11) is arranged on the side portion of the cylinder body (1), the balance shaft (10) is connected with the water pump (11), the balance shaft (10) can drive the water pump (11) to rotate, a water outlet of the water pump (11) is communicated with the water inlet jacket (4), and a water inlet of the water pump (11) is communicated with the water outlet jacket (5).

9. The small-cycle water cooling system for the engine as claimed in claim 1, 2 or 3, wherein the sum of the depths of the head water jacket (3), the communication water jacket (6) and the tank water jacket (2) is between 30 and 50 mm.

10. The small-cycle water cooling system for the engine as claimed in claim 1, 2 or 3, wherein the depth of the tank water jacket (2) is greater than that of the cylinder head water jacket (3).