V-shaped engine air cooling device and V-shaped engine

Abstract

The utility model discloses a V-shaped engine air cooling device and a V-shaped engine, the V-shaped engine comprises at least one cylinder sleeve group, the cylinder sleeve group comprises two cylinder sleeves arranged in a V shape, each cylinder sleeve comprises a cylinder sleeve body, the V-shaped engine air cooling device comprises a flywheel assembly suitable for driving circumferential rotation and a wind scooper, and the flywheel assembly comprises a fan; two air inducing channels which are separated and extend in the circumferential direction are formed between the wind scooper and the fan, the wind scooper is further provided with cooling air ports which correspond to the cylinder sleeve body and are separated from the cylinder sleeve body, and the cooling air ports are communicated with the corresponding air inducing channels; the fan guides introduced cooling air to the corresponding cooling air openings through the corresponding air inducing channels so as to conduct air cooling on the corresponding cylinder sleeve bodies. Cooling air can be uniformly provided for the cylinder sleeve body, so that the heat dissipation of the cylinder sleeve body is uniform.

Description

Technical Field

[0001] The utility model relates to a V-type engine air cooling device and a V-type engine, belonging to the technical field of engines. Background Art

[0002] The cooling of the oil pool, cylinder liner, cylinder head cavity and other parts of the air-cooled engine is mainly forced by the cooling fan of the engine flywheel or the external electronic fan. For example, the forced cooling fan of the flywheel, through the structural design of its own fan blades, forces the external cooling air to flow into the cavity composed of the fan and the air guide cover during the rotation of the flywheel, and through continuous operation and drainage, the cooling air is forced to blow at high speed along the drainage or diversion structure inside the air guide cover to the engine oil pool, cylinder block, cylinder head cavity and other parts for cooling, so as to ensure the cooling of the engine's parts with high heat load and heat transfer, and ensure that the engine parts have a continuous, stable and reasonable working temperature, so as to ensure the normal and continuous operation of the engine.

[0003] Traditional V-type engines are mostly two-cylinder, four-cylinder and six-cylinder products. Taking the two-cylinder product as an example, when the two pistons work alternately at a certain timing angle inside the engine body, the high-temperature combustion gas generated transfers heat to the cylinder liner and the cylinder head at the same time. This part of the heat needs to be forced to blow cooling air at high speed to the engine body oil pool, the engine body cylinder liner, the inner cavity of the cylinder head and other locations for cooling, so as to ensure the cooling of the engine's parts with higher heat load and heat transfer, and to ensure that the engine parts have a continuous, stable and reasonable operating temperature, so as to ensure the normal and continuous operation of the engine.

[0004] A Chinese patent with announcement number CN212716864U discloses a high-efficiency flow guide structure for an air-cooled engine, in which a flywheel cooling fan generates high-pressure cooling air and forces the two cylinder liners and two cylinder heads of the engine to be cooled. Since there is a flywheel fan shared by the two cylinders on the flywheel, there is no good guide wall or guide cavity structure inside the air guide cover, resulting in the cooling air guided out by the flywheel being unable to be blown toward the heat sinks or cooling cavities of the two cylinder liners and cylinder heads in a direction inside the air guide cover, so that the forced cooling air obtained by the two cylinder liners and cylinder heads is uneven, which results in uneven cooling capacity and different controlled temperatures of the two cylinders, resulting in different working effects of the two cylinders, and often resulting in different performance differences such as different heat load temperatures of the two cylinders, different powers generated, and different exhaust temperatures. Long-term use of the engine is prone to problems such as excessive heat load, power reduction, or excessive oil temperature. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a V-type engine air cooling device, which can evenly provide cooling air to the cylinder liner body so that the cylinder liner body dissipates heat evenly.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a V-type engine air cooling device, the V-type engine includes at least one cylinder liner group, the cylinder liner group includes two cylinder liners arranged in a V shape, the cylinder liner includes a cylinder liner body, and the V-type engine air cooling device includes:

[0007] A flywheel assembly adapted to drive circumferential rotation, the flywheel assembly comprising a fan;

[0008] An air guide cover, wherein two air induction channels separated and extending in the circumferential direction are formed between the air guide cover and the fan, and the air guide cover is also provided with cooling air ports corresponding to and separated from the cylinder sleeve body, and the cooling air ports are connected to the corresponding air induction channels; wherein,

[0009] The fan guides the introduced cooling air to the corresponding cooling air outlet through the corresponding air induction channel to air cool the corresponding cylinder liner.

[0010] Furthermore, in order to provide cooling air evenly to the cylinder head so that the cylinder head dissipates heat evenly, the cylinder liner further comprises a cylinder head, and the cylinder head is provided with a cylinder head cooling air inlet;

[0011] The cylinder head cooling air inlet is connected to the corresponding cooling air port, and the fan guides the introduced cooling air through the corresponding air inlet passage to the corresponding cooling air port and then enters the corresponding cylinder head cooling air inlet to cool the corresponding cylinder head;

[0012] And / or the cylinder head cooling air inlet is connected to the corresponding air induction channel, and the fan guides the introduced cooling air to the corresponding cylinder head cooling air inlet through the corresponding air induction channel to cool the corresponding cylinder head.

[0013] Furthermore, in order to guide the cooling air well, a guide plate is provided on the wall surface forming the corresponding air induction channel in the air guide cover, and the guide plate is suitable for guiding the cooling air passing therethrough to the corresponding cylinder head cooling air inlet.

[0014] Furthermore, the cooling air outlet has two opposite ends in the circumferential direction, namely a first end and a second end. The first end of the cooling air outlet is connected to the corresponding air duct, and the second end of the cooling air outlet is provided with a baffle.

[0015] Furthermore, in order to better cool the cylinder liner body, the cylinder liner body is provided with heat sinks and / or cylinder liner cooling air ports extending in the axial direction and connected with the corresponding cooling air ports.

[0016] Furthermore, the air guide cover is provided with two cavities along the axial direction, and an air induction channel is formed between the two cavities and the blades corresponding to the fan.

[0017] Furthermore, in order to better guide the cooling air, the inner wall of the cavity is arranged to be spirally enlarged from a starting point to a corresponding cooling air outlet in the circumferential direction.

[0018] Furthermore, the fan includes two blade groups, and the two blade groups are arranged integrally or separately.

[0019] Furthermore, a cooling air inlet is provided on the air guide cover or the flywheel assembly, and the fan introduces cooling air from the cooling air inlet.

[0020] Furthermore, in order to cool the oil pool, the V-type engine further comprises an oil pool, an oil pool shell of which is provided with at least one oil pool shell air induction channel, and the fan is further adapted to direct cooling air to the oil pool shell air induction channel.

[0021] Furthermore, a gap channel is formed between the blades of the fan and the inner wall of the air guide cover, and the gap channel is connected to the oil pool shell air induction channel. The fan guides the cooling air to the oil pool shell air induction channel through the gap channel.

[0022] The utility model also provides a V-type engine, comprising a V-type engine air cooling device.

[0023] After adopting the above technical solution, the utility model has the following beneficial effects:

[0024] When the engine is running, the cooling air is introduced from the cooling air inlet under the suction of the blades of the fan of the flywheel assembly, and then the cooling air is blown to the inner and outer circumferentially arranged air induction channels of the air guide cover under the action of the blades through a process of gathering and blowing. The cooling air can be further divided into two or more guided main blowing routes under the further guidance of the guide plate, and the cooling air can be evenly blown to the cylinder liner cooling air ports on the left and right sides of the cylinder liner body and the heat sinks on the periphery of the cylinder liner body. At the same time, the cooling air can also be directed and evenly blown to the cylinder head cooling air inlet to cool the external cooling wall surface of the cylinder head and the inner cavity of the cylinder head, thereby achieving a uniform cooling effect on the cylinder liner body part and the inner cavity of the cylinder head.

[0025] In addition, when the fan is running to draw air, a part of the cooling air will pass through the gap channel formed by the outer circle of the fan blades and the inner wall of the air guide cover, and blow to the oil pool shell air induction channel at the lower end of the body to cool the oil pool.

[0026] Through the above measures, the two cylinder liners and cylinder heads and other parts that need cooling can obtain equal cooling air, so that the heat dissipation temperature of the two cylinder liners and cylinder heads is uniform, avoiding the difference in various working parameters of the two cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a V-type engine air cooling device of the utility model;

[0028] Figure 2 for Figure 1 AA section view;

[0029] Figure 3 It is a structural schematic diagram of the flywheel assembly of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the air guide cover of the utility model;

[0031] Figure 5 It is a three-dimensional connection diagram of the air guide cover, the flywheel assembly and the cylinder head part of the utility model. DETAILED DESCRIPTION

[0032] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0033] Embodiment 1

[0034] like Figures 1 to 5 As shown, a V-type engine air cooling device, the V-type engine includes at least one cylinder liner group, for example, a two-cylinder engine has one cylinder liner group, a four-cylinder engine has two cylinder liner groups, the cylinder liner group includes two cylinder liners arranged in a V shape, the cylinder liner 1 includes a cylinder liner body 11, the above is the prior art, the V-type engine air cooling device includes:

[0035] A flywheel assembly 2 adapted to drive circumferential rotation, the flywheel assembly 2 comprising a fan 21;

[0036] The air guide cover 3, two air induction channels 10 separated and extending in the circumferential direction are formed between the air guide cover 3 and the fan 21, and the air guide cover 3 is also provided with a cooling air port 31 corresponding to and separated from the cylinder liner 11, and the cooling air port 31 is connected to the corresponding air induction channel 10; wherein,

[0037] The fan 21 guides the introduced cooling air to the corresponding cooling air port 31 through the corresponding air induction channel 10 to cool the corresponding cylinder liner 11 by air.

[0038] In this embodiment, the flywheel assembly 2 is connected to the driving shaft of the engine, and the flywheel assembly 2 is driven to rotate by the driving shaft. The flywheel assembly 2 is a prior art and will not be described in detail in this embodiment.

[0039] Specifically, Figures 1-2 As shown, the cylinder liner 1 further includes a cylinder head 12, and a cylinder head cooling air inlet 12a is provided on the cylinder head 12;

[0040] The cylinder head cooling air inlet 12a is connected with the corresponding cooling air port 31, and the fan 21 guides the introduced cooling air through the corresponding air inlet channel 10 to the corresponding cooling air port 31 and then enters the corresponding cylinder head cooling air inlet 12a to cool the corresponding cylinder head 12; of course, in some embodiments, the cylinder head cooling air inlet 12a is connected with the corresponding air inlet channel 10, and the fan 21 guides the introduced cooling air through the corresponding air inlet channel 10 to the corresponding cylinder head cooling air inlet 12a to cool the corresponding cylinder head 12.

[0041] Specifically, Figure 1 , 2 As shown, a guide plate 32 is provided on the wall surface of the air guide cover 3 forming the corresponding air induction channel 10, and the guide plate 32 is suitable for guiding the cooling air passing therethrough to the corresponding cylinder head cooling air inlet 12a.

[0042] Specifically, Figure 1 , 2 As shown, the cooling air outlet 31 has two opposite ends in the circumferential direction, namely a first end and a second end. The first end of the cooling air outlet 31 is connected to the corresponding air duct 10, and the second end of the cooling air outlet 31 is provided with a blocking plate 31a.

[0043] Specifically, Figure 1 , 2 As shown, the cylinder liner body 11 is provided with a heat sink 11 a and a cylinder liner cooling air port 11 b extending in the axial direction and communicating with the corresponding cooling air port 31 .

[0044] like Figure 3 As shown, the specific structure of the fan of the flywheel assembly 2 can be: including a base plate 21a, two blade groups 21b, a partition plate 21c and an outer ring plate 21d, the base plate 21a is connected to one side of one of the blade groups 21b, the opposite sides of the two blade groups 21b are separated by the partition plate 21c, the other side of the other blade group 21b is connected to the outer ring plate 21d, and the blade group 21b includes a plurality of blades arranged along the circumferential direction.

[0045] Specifically, in this embodiment, the two blade groups 21b may be integrally arranged; of course, in some embodiments, the two blade groups 21b may also be separately arranged.

[0046] Specifically, Figure 4 , 5 As shown, the air guide cover 3 is provided with two cavities 33 (ie, an outer cavity and an inner cavity) along the axial direction. The two cavities 33 correspond to the two blade groups 21b respectively, and an air induction channel 10 is formed between the cavity and the blades of the corresponding blade group 21b.

[0047] In this embodiment, if Figure 1As shown, the inner air induction channel 10 is responsible for cooling the cylinder liner body part of the left engine body and the inner cavity of the left cylinder head, and the outer air induction channel 10 is responsible for cooling the cylinder liner body part of the right engine body and the inner cavity of the right cylinder head.

[0048] Specifically, Figure 1 As shown, the inner wall of the cavity 33 is spirally enlarged from a starting point to the corresponding cooling air outlet 31 in the circumferential direction.

[0049] Specifically, Figure 1 As shown, a cooling air inlet 34 is provided on the air guide cover 3 or the flywheel assembly, and the fan 21 introduces cooling air from the cooling air inlet 34; the cooling air inlets 34 corresponding to the two fans 21 can share one, and of course the cooling air inlets 34 corresponding to the two fans 21 can also be set separately.

[0050] In this embodiment, when the engine is running, the cooling air is introduced from the cooling air inlet 34 under the suction force of the blades of the fan 21 of the flywheel assembly 2, and then the cooling air is blown to the inner and outer circumferentially arranged air inlet channels 10 of the air guide cover 3 under the action of the blades through a process of gathering and blowing. The cooling air can be further divided into two or more guided main blowing routes under the further guidance of the guide plate 32, and the cooling air can be evenly blown to the cylinder liner cooling air ports 11b on the left and right sides of the cylinder liner body 11 and the heat sink 11a on the periphery of the cylinder liner body 11. At the same time, the cooling air can also be directed and evenly blown to the cylinder head cooling air inlet 12a to cool the external cooling wall surface of the cylinder head 12 and the inner cavity of the cylinder head 12, thereby achieving a uniform cooling effect on the cylinder liner body part and the inner cavity of the cylinder head.

[0051] Specifically, Figure 1 As shown, the V-type engine further comprises an oil pool 20, and the oil pool shell of the oil pool 20 is provided with one or two oil pool shell air induction channels 20a, and the fan 21 is also suitable for guiding cooling air to the oil pool shell air induction channels 20a.

[0052] Specifically, Figure 1 As shown, a gap channel is formed between the blades of the fan 21 and the inner wall of the air guide cover 3, and the gap channel is connected to the oil pool shell air induction channel 20a. The fan 21 guides the cooling air to the oil pool shell air induction channel 20a through the gap channel.

[0053] In addition, when the fan 21 is running to draw air, a part of the cooling air will pass through the gap channel formed by the outer circle of the blades of the fan 21 and the inner wall of the air guide cover 3, and blow to the oil pool shell air induction channel 20a at the lower end of the body to cool the oil pool 20.

[0054] Embodiment 2

[0055] A V-type engine comprises the V-type engine air cooling device in the first embodiment.

[0056] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A V-type engine air cooling device, the V-type engine comprising at least one cylinder liner group, the cylinder liner group comprising two cylinder liners arranged in a V shape, the cylinder liner (1) comprising a cylinder liner body (11), characterized in that: V-type engine air cooling system includes: A flywheel assembly (2) suitable for driving circumferential rotation, wherein the flywheel assembly (2) comprises a fan (21); An air guide cover (3), wherein two air induction channels (10) separated and extending in the circumferential direction are formed between the air guide cover (3) and the fan (21), and the air guide cover (3) is also provided with a cooling air port (31) corresponding to and separated from the cylinder sleeve (11), and the cooling air port (31) is connected to the corresponding air induction channel (10); wherein: The fan (21) guides the introduced cooling air to the corresponding cooling air port (31) through the corresponding air induction channel (10) to cool the corresponding cylinder liner (11) with air.

2. The V-type engine air cooling device according to claim 1, characterized in that: The cylinder sleeve (1) further comprises a cylinder head (12), and the cylinder head (12) is provided with a cylinder head cooling air inlet (12a); The cylinder head cooling air inlet (12a) is connected to the corresponding cooling air port (31), and the fan (21) guides the introduced cooling air through the corresponding air inlet channel (10) to the corresponding cooling air port (31) and then enters the corresponding cylinder head cooling air inlet (12a) to cool the corresponding cylinder head (12); And / or the cylinder head cooling air inlet (12a) is connected to the corresponding air inlet channel (10), and the fan (21) guides the introduced cooling air through the corresponding air inlet channel (10) to the corresponding cylinder head cooling air inlet (12a) to cool the corresponding cylinder head (12).

3. The V-type engine air cooling device according to claim 2, characterized in that: A guide plate (32) is provided on a wall surface forming a corresponding air induction channel (10) in the air guide cover (3), and the guide plate (32) is suitable for guiding the cooling air passing therethrough to the corresponding cylinder head cooling air inlet (12a).

4. The V-type engine air cooling device according to claim 2, characterized in that: The cooling air outlet (31) has two opposite ends in the circumferential direction, namely a first end and a second end. The first end of the cooling air outlet (31) is connected to the corresponding air induction channel (10), and the second end of the cooling air outlet (31) is provided with a baffle plate (31a).

5. The V-type engine air cooling device according to claim 1, characterized in that: The cylinder liner body (11) is provided with a heat sink (11a) and / or a cylinder liner cooling air port (11b) extending in the axial direction and connected to the corresponding cooling air port (31).

6. The V-type engine air cooling device according to claim 1, characterized in that: The air guide cover (3) is provided with two cavities (33) along the axial direction, and an air induction channel (10) is formed between the two cavities and the blades corresponding to the fan (21).

7. The V-type engine air cooling device according to claim 6, characterized in that: The inner wall of the cavity (33) is arranged to expand spirally from a starting point to a corresponding cooling air outlet (31) in the circumferential direction.

8. The V-type engine air cooling device according to claim 1, characterized in that: The fan (21) comprises two blade groups (21b), and the two blade groups (21b) are arranged in one piece or in separate pieces.

9. The V-type engine air cooling device according to claim 1, characterized in that: The air guide cover (3) or the flywheel assembly is provided with a cooling air inlet (34), and the fan (21) introduces cooling air from the cooling air inlet (34).

10. The V-type engine air cooling device according to claim 1, characterized in that: The V-type engine further comprises an oil pool (20), the oil pool shell of the oil pool (20) being provided with at least one oil pool shell air induction channel (20a), and the fan (21) is further adapted to direct cooling air to the oil pool shell air induction channel (20a).

11. The V-type engine air cooling device according to claim 10, characterized in that: A gap channel is formed between the blades of the fan (21) and the inner wall of the air guide cover (3), and the gap channel is connected to the oil pool shell air induction channel (20a). The fan (21) guides cooling air to the oil pool shell air induction channel (20a) through the gap channel.

12. A V-type engine, characterized in that: The invention comprises the V-type engine air cooling device according to any one of claims 1 to 11.

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