CN214464577U - Engine cooling system - Google Patents
Engine cooling system Download PDFInfo
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- CN214464577U CN214464577U CN202120570690.XU CN202120570690U CN214464577U CN 214464577 U CN214464577 U CN 214464577U CN 202120570690 U CN202120570690 U CN 202120570690U CN 214464577 U CN214464577 U CN 214464577U
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Abstract
The utility model discloses an engine cooling system, wherein a machine body cooling water cavity comprises a machine body upper layer cooling water cavity and a machine body lower layer cooling water cavity, and a machine body is provided with a machine body water inlet channel, a machine body water return channel, a machine body side water cavity, a machine body upper layer water cavity water return channel, a machine body lower layer water cavity water delivery channel and a machine body lower layer water cavity water return channel; the cylinder cover cooling water cavity comprises a cylinder cover upper cooling water cavity and a cylinder cover lower cooling water cavity, the liner ring peripheral water cavity is communicated between the cylinder cover upper cooling water cavity and the cylinder cover lower cooling water cavity, a cylinder cover water inlet channel is arranged between the cylinder cover lower cooling water cavity and the engine body water inlet channel, a transverse water channel is arranged between the cylinder cover lower cooling water cavity and the liner ring peripheral water cavity, a water return hole is formed between the cylinder cover upper cooling water cavity and the exhaust passage cooling water cavity, and a water return water serial pipe is arranged between the exhaust passage cooling water cavity and the engine body side water cavity. This application changes the cooling sequence, and the position that the preferential cooling temperature is high, and the position that the recooling temperature is low, and the cooling is pointed.
Description
Technical Field
The utility model relates to an engine technical field, specific theory relates to an engine cooling system.
Background
As the degree of engine strengthening becomes higher and higher, the thermal load on the engine becomes higher and higher. High-temperature heat generated by engine combustion is transferred to the upper part of the cylinder sleeve and a firepower bank bottom plate of the cylinder cover through heat exchange. The upper part of the cylinder sleeve and the firepower land of the cylinder cover need to conduct heat continuously transmitted from a combustion chamber in the running process of an engine, the temperature is reduced, and the two parts need to be cooled intensively. The excessive temperature of the upper part of the cylinder sleeve easily causes the excessive abrasion of the piston ring, thereby reducing the service life of the piston ring and the cylinder sleeve. The bottom of the fire bank of the cylinder cover has overhigh temperature, and thermal fatigue is generated in a nose bridge area between valve seat ring holes, so that cracks are generated, and the service life of the cylinder cover is influenced.
In the prior art, when a machine body and a cylinder cover are cooled, generally, a cooling medium cools one of the machine body and the cylinder cover firstly and then cools the other one, the temperature of the cooling medium is increased after the cooling medium cools the first one, the cooling effect on the second one is poor, and the important cooling on the upper part of a cylinder sleeve and a bottom plate of the cylinder cover cannot be realized.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: provided is an engine cooling system capable of cooling a cylinder liner upper portion and a cylinder head bottom plate with emphasis.
For solving the first technical problem, the technical scheme of the utility model is that:
an engine cooling system comprising: organism and cylinder cap, the organism is equipped with the cylinder jacket, the cylinder cap is equipped with the sprayer bush, the organism with be equipped with organism cooling water cavity between the cylinder jacket, the cylinder cap is equipped with cylinder cap cooling water cavity and exhaust passage cooling water cavity, the cylinder cap with be equipped with bush ring week water cavity, its characterized in that between the sprayer bush:
the machine body cooling water cavity comprises a machine body upper layer cooling water cavity and a machine body lower layer cooling water cavity, the machine body is provided with a machine body water inlet channel, a machine body water return channel and a machine body side water cavity, a machine body upper layer water cavity water delivery channel is arranged between the machine body water inlet channel and the machine body upper layer cooling water cavity, a machine body upper layer water cavity water return channel is arranged between the machine body upper layer cooling water cavity and the machine body side water cavity, a machine body lower layer water cavity water delivery channel is arranged between the machine body side water cavity and the machine body lower layer cooling water cavity, and a machine body lower layer water cavity water return channel is arranged between the machine body lower layer cooling water cavity and the machine body water return channel;
the cylinder head cooling water cavity comprises a cylinder head upper-layer cooling water cavity and a cylinder head lower-layer cooling water cavity, the liner ring peripheral water cavity is communicated with the cylinder head upper-layer cooling water cavity and between the cylinder head lower-layer cooling water cavities, the cylinder head lower-layer cooling water cavity and a cylinder head water inlet channel are arranged between the machine body water inlet channels, the cylinder head lower-layer cooling water cavity and transverse water channels with a plurality of circumferential uniform distributions are arranged between the liner ring peripheral water cavities, the cylinder head upper-layer cooling water cavity and an exhaust passage cooling water cavity are provided with water return holes, and the exhaust passage cooling water cavity and the machine body water cavity are provided with water return water serial pipes.
Preferably, the cylinder cover water inlet channel comprises a cylinder cover water delivery channel and a water inlet water serial pipe which are communicated, the cylinder cover water delivery channel is communicated with the engine body water inlet channel, the water inlet water serial pipe is communicated with the cylinder cover lower-layer cooling water cavity, the cylinder cover water delivery channel is arranged on the engine body, and the water inlet water serial pipe is fixed between the engine body and the cylinder cover.
Preferably, the cylinder head water inlet channel is provided with two water inlet channels.
Preferably, the organism is equipped with an organism brace table, the organism brace table is separated the organism cooling water cavity does the organism upper cooling water cavity with the organism lower floor cooling water cavity, the cylinder jacket is equipped with the cylinder jacket and supports the shoulder, the cylinder jacket support the shoulder support in the organism brace table and sealing connection between the two.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
when the engine works, the cooling medium is divided into two paths, one path of the cooling medium is led to enter the upper cooling water cavity of the engine body by the water delivery channel of the upper water cavity of the engine body, the upper part of the cylinder sleeve is preferentially cooled, the other path of the cooling medium is led to enter the lower cooling water cavity of the cylinder cover by the water inlet channel of the cylinder cover, the firepower bank bottom plate of the cylinder cover is preferentially cooled, the cooling effect on the upper part of the cylinder sleeve and the firepower bank bottom plate is good, one of the cylinder sleeve is prevented from being cooled firstly, and the energy waste caused by poor cooling or increased cooling medium flow caused by the other cylinder sleeve is avoided by recooling. This application changes the cooling sequence, and the position that the preferential cooling temperature is high, and the position that the recooling temperature is low, and the cooling is pointed.
Drawings
FIG. 1 is a schematic cross-sectional view of an engine cooling system according to the present invention;
FIG. 2 is a schematic sectional view taken along line B-B in FIG. 1;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a schematic view of the flow of the block water jacket cooling medium (the cavities and channels are shown in solid form);
FIG. 7 is a schematic view of the cylinder head cooling medium flow (cavities and channels are shown in solid form);
fig. 8 is a coolant flow path diagram of the engine cooling system of the present invention;
in the figure: 1-body; 101-a water inlet channel of the machine body; 102-body return channel; 103-collecting the upper layer cooling water cavity of the machine body; 104-a cooling water cavity at the lower layer of the machine body; 105-a body-side water cavity; 106-cylinder head first water delivery channel; 107-cylinder head second water delivery channel; 108-water conveying channel of upper water cavity of body; 109-a water return channel of an upper water cavity of the machine body; 110-water conveying channel of lower water cavity of machine body; 111-a water return channel of a lower-layer water cavity of the machine body; 112-a body support platform; 2-a cylinder head; 201-cooling water cavity on the upper layer of the cylinder cover; 202-cylinder head lower layer cooling water cavity; 203-transverse water channel; 204-a liner ring water cavity; 205-exhaust cooling water cavity; 206-a first water inlet hole; 207-a second water inlet; 208-a water return hole; 301-boss; 302-a cylinder liner support shoulder; 4-cylinder head gasket; 6-a first water inlet and water serial pipe; 7-a second water inlet and water connecting pipe; 8-a water return and water stringing pipe; 9-sealing ring; 10-a sealing ring; 11-a sealing ring; 12-sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2 together, an engine cooling system includes: the engine body 1 and the cylinder cover 2 are arranged, a cylinder cover gasket 4 is arranged between the engine body 1 and the cylinder cover 2, the engine body 1 is provided with a cylinder sleeve 3, the cylinder cover 2 is provided with a fuel injector bush 4, an engine body cooling water cavity is arranged between the engine body 1 and the cylinder sleeve 3, the cylinder cover 2 is provided with a cylinder cover cooling water cavity and an exhaust passage cooling water cavity 205, and a bush ring peripheral water cavity 204 is arranged between the cylinder cover 2 and the fuel injector bush 4.
As shown in fig. 2 and fig. 3, the body cooling water cavity includes a body upper layer cooling water cavity 103 and a body lower layer cooling water cavity 104, the body is provided with a body water inlet channel 101, a body water return channel 102 and a body side water cavity 105, a body upper layer water cavity water delivery channel 108 is arranged between the body water inlet channel 101 and the body upper layer cooling water cavity 103, a body upper layer water cavity water return channel 109 is arranged between the body upper layer cooling water cavity 103 and the body side water cavity 105, a body lower layer water cavity water delivery channel 110 is arranged between the body side water cavity 105 and the body lower layer cooling water cavity 104, and a body lower layer water cavity water return channel 111 is arranged between the body lower layer cooling water cavity 104 and the body water return channel 102.
As shown in fig. 1, 4, 5, 6 and 7, the cylinder head cooling water cavity includes a cylinder head upper cooling water cavity 201 and a cylinder head lower cooling water cavity 202, the liner ring peripheral water cavity 204 is communicated between the cylinder head upper cooling water cavity 201 and the cylinder head lower cooling water cavity 202, a cylinder head water inlet channel is arranged between the cylinder head lower cooling water cavity 202 and the engine body water inlet channel 101, a plurality of transverse water channels 203 are arranged between the cylinder head lower cooling water cavity 202 and the liner ring peripheral water cavity 204, a water return hole 208 is arranged between the cylinder head upper cooling water cavity 201 and the exhaust passage cooling water cavity 205, a water return water serial pipe 8 is arranged between the exhaust passage cooling water cavity 205 and the engine body side water cavity 105, the water return serial pipe 8 is fixed between the engine body 1 and the cylinder head 2, and a sealing ring 9 is respectively arranged between the water return serial pipe 8 and the engine body 1 and the cylinder head 2.
The cylinder head inlet water channel is equipped with two, the first is for including the cylinder head first water delivery passageway 106 and the first cluster water pipe 6 of intaking that are linked together, the second is the cylinder head second water delivery passageway 107 and the second cluster water pipe 7 of intaking that are linked together, the first water delivery passageway 106 of cylinder head and the cylinder head second water delivery passageway 107 are located organism 1 and all are linked together with organism inlet channel 101, first cluster water pipe 6 of intaking and the second cluster water pipe 7 of intaking all fixed connection are between organism 1 and cylinder head 2, cylinder head 2 is equipped with the first inlet opening 206 of being connected with first cluster water pipe 6 and the second inlet opening 207 of being connected with second cluster water pipe 7 of intaking, be equipped with the sealing washer between first cluster water pipe 6 of intaking and organism 1 and the cylinder head 2, be equipped with the sealing washer between second cluster water pipe 7 of intaking and organism 1 and the cylinder head 2. The connecting line between the centers of the first water inlet serial water pipe 6 and the second water inlet serial water pipe 7 and the center of the cylinder sleeve 3 forms an included angle alpha, the diameter of the first water inlet serial water pipe 6 is D1, the diameter of the second water inlet serial water pipe 7 is D2, and by adjusting the size of alpha, the ratio of D1 to D2 and the number of the transverse water channels 203, the flow of cooling water can be reasonably distributed, and the exhaust nose bridge area is cooled in a key mode.
The engine body 1 is provided with an engine body supporting platform 112, the engine body supporting platform 112 separates the engine body cooling water cavity into an engine body upper layer cooling water cavity 103 and an engine body lower layer cooling water cavity 104, the cylinder sleeve 3 is provided with a cylinder sleeve supporting shoulder 302, and the cylinder sleeve supporting shoulder 302 is supported on the engine body supporting platform 112 and is in sealing connection between the two. The upper portion of cylinder jacket 3 is processed there is boss 301, is equipped with sealing washer 10 between boss 301 and the cylinder jacket 3, and sealing washer 10 and cylinder jacket support shoulder 302 form the sealed to organism upper cooling water cavity 103. A sealing ring 11 and a sealing ring 12 are arranged between the lower part of the machine body 1 and the cylinder sleeve 3, the sealing ring 11 and the cylinder sleeve supporting shoulder 302 form sealing to the lower layer cooling water cavity 104 of the machine body, and the sealing ring 12 is used for sealing oil mist of a crankcase and preventing the oil mist from invading the lower layer cooling water cavity 104 of the machine body.
The utility model discloses an engine cooling system's working process and theory of operation do:
as shown in fig. 8, the cooling medium (cooling water, cooling liquid, or a mixture of water and cooling liquid, etc.) flowing through the body water inlet channel 101 is divided into two paths;
in the first path, part of the cooling medium in the engine body water inlet channel 101 enters the engine body upper cooling water cavity 103 from the engine body upper water cavity water delivery channel 108 to cool the upper part of the cylinder sleeve 3, then enters the engine body side water cavity 105 from the engine body upper water cavity water return channel 109, then enters the engine body lower cooling water cavity 104 from the engine body lower water cavity water delivery channel 110, and then enters the engine body water return channel 102 from the engine body lower water cavity water return channel 111;
in the second path, part of the cooling medium in the body water inlet channel 101 enters the cylinder head lower-layer cooling water cavity 202 through the cylinder head first water delivery channel 106 and the first water inlet serial pipe 6, part of the cooling medium in the body water inlet channel 101 enters the cylinder head lower-layer cooling water cavity 202 through the cylinder head second water delivery channel 107 and the second water inlet serial pipe 7, two longitudinal cooling media enter the cylinder head lower-layer cooling water cavity 202 to cool the cylinder head bottom plate, then enter each transverse water channel 203 to cool the cylinder head nose beam region, then enter the liner ring peripheral water cavity 204 to be collected, then flow upwards into the cylinder head upper-layer cooling water cavity 201 along the liner ring peripheral water cavity 204, then flow towards the exhaust passage cooling water cavity 205 to be collected, and flow into the body side water cavity 105 through the water return serial pipe 8 after cooling the two sides and the bottom of the exhaust passage 209.
The utility model discloses an engine cooling system has following advantage:
(1) the cooling medium is divided into two paths, the upper part of the cylinder sleeve 3 and the firepower bank bottom plate of the cylinder cover 2 are preferentially cooled, and poor cooling caused by firstly cooling one cylinder sleeve and then cooling the other cylinder sleeve or energy waste caused by increasing the flow of the cooling medium is avoided;
(2) the water delivery channel 108 and the water return channel 109 of the upper water cavity of the machine body are arranged at two opposite sides of the cylinder sleeve 3, and the water delivery channel 110 and the water return channel 111 of the lower water cavity of the machine body are arranged at two opposite sides of the cylinder sleeve 3, so that the cooling of the periphery of the cylinder sleeve 3 is enhanced;
(3) the water inlet channel, the water return channel and the side water cavity of the cooling medium of the whole machine are integrated on the machine body 1, so that the arrangement of peripheral pipelines is reduced, and the structure is simple;
(4) a transverse water channel 203 is processed between the air passages on the bottom plate of the cylinder cover 2, and the transverse water channel 203 can be cast or machined, so that the cooling between nose bridge areas is enhanced, and the thermal fatigue is avoided;
(5) the cylinder jacket support shoulder is arranged at the middle position, the rubber ring is adopted above the cylinder jacket 4 for sealing, the position of the upper cooling water cavity 103 of the engine body can be increased, the cooling of the position of a piston ring is enhanced, and the abrasion of the cylinder cover 3 and a piston ring is reduced.
(6) The cylinder sleeve support shoulder 302 and the body support platform 112 are sealed by a slightly inclined surface, so that a sealing rubber ring can be omitted.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (4)
1. An engine cooling system comprising: organism and cylinder cap, the organism is equipped with the cylinder jacket, the cylinder cap is equipped with the sprayer bush, the organism with be equipped with organism cooling water cavity between the cylinder jacket, the cylinder cap is equipped with cylinder cap cooling water cavity and exhaust passage cooling water cavity, the cylinder cap with be equipped with bush ring week water cavity, its characterized in that between the sprayer bush:
the machine body cooling water cavity comprises a machine body upper layer cooling water cavity and a machine body lower layer cooling water cavity, the machine body is provided with a machine body water inlet channel, a machine body water return channel and a machine body side water cavity, a machine body upper layer water cavity water delivery channel is arranged between the machine body water inlet channel and the machine body upper layer cooling water cavity, a machine body upper layer water cavity water return channel is arranged between the machine body upper layer cooling water cavity and the machine body side water cavity, a machine body lower layer water cavity water delivery channel is arranged between the machine body side water cavity and the machine body lower layer cooling water cavity, and a machine body lower layer water cavity water return channel is arranged between the machine body lower layer cooling water cavity and the machine body water return channel;
the cylinder head cooling water cavity comprises a cylinder head upper-layer cooling water cavity and a cylinder head lower-layer cooling water cavity, the liner ring peripheral water cavity is communicated with the cylinder head upper-layer cooling water cavity and between the cylinder head lower-layer cooling water cavities, the cylinder head lower-layer cooling water cavity and a cylinder head water inlet channel are arranged between the machine body water inlet channels, the cylinder head lower-layer cooling water cavity and transverse water channels with a plurality of circumferential uniform distributions are arranged between the liner ring peripheral water cavities, the cylinder head upper-layer cooling water cavity and an exhaust passage cooling water cavity are provided with water return holes, and the exhaust passage cooling water cavity and the machine body water cavity are provided with water return water serial pipes.
2. The engine cooling system of claim 1, wherein: the cylinder cover water inlet channel comprises a cylinder cover water delivery channel and a water inlet water serial pipe which are communicated, the cylinder cover water delivery channel is communicated with the engine body water inlet channel, the water inlet water serial pipe is communicated with the cylinder cover lower-layer cooling water cavity, the cylinder cover water delivery channel is arranged on the engine body, and the water inlet water serial pipe is fixed between the engine body and the cylinder cover.
3. The engine cooling system of claim 2, wherein: and two water inlet channels of the cylinder cover are arranged.
4. The engine cooling system of claim 1, wherein: the organism is equipped with an organism brace table, the organism brace table is separated the organism cooling water cavity does the organism upper cooling water cavity with the organism lower floor cooling water cavity, the cylinder jacket is equipped with the cylinder jacket and supports the shoulder, the cylinder jacket support the shoulder support in organism brace table and sealing connection between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120570690.XU CN214464577U (en) | 2021-03-19 | 2021-03-19 | Engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120570690.XU CN214464577U (en) | 2021-03-19 | 2021-03-19 | Engine cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464577U true CN214464577U (en) | 2021-10-22 |
Family
ID=78155767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120570690.XU Active CN214464577U (en) | 2021-03-19 | 2021-03-19 | Engine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464577U (en) |
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2021
- 2021-03-19 CN CN202120570690.XU patent/CN214464577U/en active Active
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