A degassing and water-cooling assembly for an engine

Abstract

The present invention discloses a degassing and water-cooling assembly for an engine, which comprises a body pipeline, an upper water jacket of a cylinder head, a lower water jacket of the cylinder head and a body water jacket; the body pipeline is communicated with the upper water jacket of the cylinder head; a first communication water channel is arranged at the center of the lower side of the upper water jacket of the cylinder head and is communicated with the lower water jacket of the cylinder head; a plurality of second communication water channels are respectively arranged on the front and rear sides of the lower water jacket of the cylinder head and are communicated with the body water jacket; water outlets are respectively arranged at the left part of the front side and the right part of the rear side of the body water jacket; a degassing head is arranged at the top of the upper water jacket of the cylinder head. The adoption of the present invention has the advantages of good degassing effect, good heat exchange effect, long service life and the like.

Description

Technical Field

[0001] The invention relates to the technical field of engine water cooling, and in particular to a degassing water cooling component for an engine. Background Art

[0002] Water cooling uses water (or antifreeze) as a cooling medium to remove heat from high-temperature engine parts to ensure the normal operating temperature of the engine. The existing water-cooling components currently have poor degassing effects, and bubbles often remain in dead corners and cannot be effectively discharged in a timely manner. The inability to effectively discharge bubbles in a timely manner not only affects the heat dissipation effect, but also easily causes cavitation, causing great damage to the surface of the casting. In water-cooled engines, degassing has always been a common problem to be solved in the industry. It requires overall consideration of fluid resistance, and at the same time, while ensuring that the coolant in each area effectively absorbs heat, it is also necessary to effectively prevent the retention of bubbles. This requires an overall design of the entire water-cooled cylinder liner, pipeline and other components combined with fluid dynamics and degassing technology. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a degassing water cooling component for an engine with good degassing effect and good heat dissipation effect.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A degassing water cooling component for an engine comprises a body pipe, a cylinder head upper water jacket, a cylinder head lower water jacket and a body water jacket; the body pipe is connected with the cylinder head upper water jacket; a first communicating water channel is provided at the lower center of the cylinder head upper water jacket and is connected with the cylinder head lower water jacket; a plurality of second communicating water channels are respectively provided at the front and rear sides of the cylinder head lower water jacket and are connected with the body water jacket; a water outlet is respectively provided at the front left part of the body water jacket and the rear right part of the body water jacket; a degassing head is provided at the top of the cylinder head upper water jacket.

[0006] Furthermore, a plurality of small exhaust pipes are provided between the cylinder head upper water jacket and the cylinder head lower water jacket; the small exhaust pipes are distributed corresponding to the second connecting water channels or distributed at corners.

[0007] Furthermore, a gas collecting protrusion is provided at the lower end of the exhaust pipe, and the gas collecting protrusion is distributed on the water jacket under the cylinder head.

[0008] Furthermore, the cylinder head lower water jacket is designed with slight protrusions along the front and rear sides as a whole; the cylinder head upper water jacket is provided with an air collecting convex ring in the middle of its top surface, and a degassing head is also provided on one side, the degassing head is higher than the air collecting convex ring, and an inclined exhaust chamber is provided between the degassing head and the air collecting convex ring.

[0009] Furthermore, the lower water jacket of the cylinder head is taken as a unit corresponding to one unit of the engine block water jacket. There are two second communication water channels provided on each of the front and rear sides corresponding to one unit of the engine block water jacket. Among them, for every second communication water channel, there is an exhaust small pipe provided. Meanwhile, at the center thereof, there is a first communication water channel corresponding to the upper water jacket of the cylinder head.

[0010] Furthermore, an exhaust main pipe is further included. The degassing head is connected to the exhaust main pipe through an exhaust joint; both ends of the exhaust main pipe are communicated to the vehicle auxiliary water tank through connecting pipes.

[0011] Furthermore, the engine block pipeline includes a main water inlet pipeline, and three water inlet branch pipes are opened on the main water inlet pipeline. The water inlet branch pipes are respectively communicated with the upper water jacket of the cylinder head.

[0012] Furthermore, the upper water jacket of the cylinder head corresponding to one unit of the lower water jacket of the cylinder head adopts a cut - corner design, and the cut - corners are distributed at the diagonals of the degassing head; four hollow holes are formed around one unit of the lower water jacket of the cylinder head.

[0013] The beneficial effects of the present invention compared with the prior art:

[0014] 1. By reasonably designing the upper water jacket of the cylinder head, the lower water jacket of the cylinder head and the engine block water jacket, the present invention adopts three - way water inlet from the upper water jacket of the cylinder head. Then, the lower water jacket of the cylinder head is taken as a unit corresponding to one unit of the engine block water jacket (unit cylinder). Each unit is correspondingly provided with a first communication water channel for mainly communicating with the upper water jacket of the cylinder head, and correspondingly provided with 4 second communication water channels for coolant circulation and bubble degassing with one unit of the engine block water jacket; meanwhile, an exhaust small pipe is further provided corresponding to each second communication water channel; the upper water jacket of the cylinder head and the lower water jacket of the cylinder head adopt cut - corner and hollow - hole designs, and in combination with an intake total port + two outlet channels distributed front and rear, the overall fluid flow smoothness is improved, the water flow dead - corners are greatly reduced, the formation of eddy currents is reduced, the amount of bubble generation is reduced, the occurrence of cavitation is reduced, and the service life is improved. Meanwhile, through the optimized design of the above - mentioned structural layout, the following technical effects are achieved:

[0015] (1) The water flow uniformity of each cylinder at the lower part of the cylinder head is high, and the maximum deviation is only 0.08 m / s, ensuring the cooling uniformity of each cylinder, improving the consistency of each cylinder's operation, and further improving the overall efficiency of the engine. This is mainly due to the reasonable structural design and the timely discharge of bubbles, thereby improving the heat exchange effect.

[0016] (2) Under the same flow rate, this solution has a significantly better heat transfer coefficient. At the same time, by reducing the water pump flow rate, such as to 500, the small flow rate of this solution can still reach or even exceed the level of the large flow rate of the traditional solution, while the resistance value decreases; and the decrease in water pump flow rate can reduce the power consumption of accessories and improve fuel economy.

[0017] 2. By connecting the exhaust pipes at both ends of the exhaust main pipe, the engine can be effectively and quickly exhausted both in the uphill and downhill stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is a side view of the present invention;

[0020] Figure 3 It is a schematic diagram of the partial structure on the right side of the present invention;

[0021] Figure 4 It is a right side partial cutaway view of the present invention;

[0022] Figure 5 It is a right section view of the present invention;

[0023] Figure 6 It is a schematic diagram of the upper part of the combined structure of the cylinder head upper water jacket and the cylinder head lower water jacket of the present invention;

[0024] Figure 7 It is a schematic diagram of the lower part of the combined structure of the cylinder head upper water jacket and the cylinder head lower water jacket of the present invention;

[0025] Figure 8 It is a schematic structural diagram of the water jacket on the cylinder head of the present invention;

[0026] Figure 9 It is a schematic structural diagram of the cylinder head lower water jacket of the present invention;

[0027] Figure 10 It is the import and export resistance cloud diagram of the present invention;

[0028] Figure 11 It is the flow velocity cloud diagram of each cylinder of the present invention;

[0029] Figure 12 It is the flow velocity cloud diagram of the bridge of nose area of ​​the present invention. DETAILED DESCRIPTION

[0030] like Figures 1 to 9As shown in the figure, a degassing and water-cooling assembly for an engine includes a body pipe 1, an upper water jacket 8 on the cylinder head, a lower water jacket 7 on the cylinder head, and a body water jacket 5. The body pipe is communicated with the upper water jacket on the cylinder head. A first communication water channel 8-2 is arranged at the center of the lower side of the upper water jacket on the cylinder head and is communicated with the lower water jacket on the cylinder head. A plurality of second communication water channels 6 are arranged on the front and rear sides of the lower water jacket on the cylinder head respectively and are communicated with the body water jacket. An outlet water channel 14 is arranged at the left part of the front side of the body water jacket and the right part of the rear side of the body water jacket respectively. A degassing head 11 is arranged at the top of the upper water jacket on the cylinder head. A plurality of exhaust small pipes 8-1 are further arranged between the upper water jacket on the cylinder head and the lower water jacket on the cylinder head. The exhaust small pipes are distributed corresponding to the second communication water channels or are distributed at the corners. A gas collecting protrusion 7-1 is further arranged at the lower end of the exhaust small pipe, and the gas collecting protrusion is distributed on the lower water jacket on the cylinder head. The lower water jacket on the cylinder head is integrally designed to be slightly convex along the front and rear sides. The upper water jacket on the cylinder head is provided with a gas collecting convex ring 13 at the middle of its top surface, and a degassing head 11 is arranged on one side thereof. The degassing head is higher than the gas collecting convex ring, and an inclined exhaust cavity 12 is arranged between the degassing head and the gas collecting convex ring. The lower water jacket on the cylinder head is taken as a unit corresponding to one unit of the body water jacket. Two second communication water channels are arranged on the front and rear sides of each corresponding unit of the body water jacket. Three of the second communication water channels are provided with one exhaust small pipe for each corresponding second communication water channel. Meanwhile, a first communication water channel is arranged at the center corresponding to the upper water jacket on the cylinder head. In order to reduce the generation of bubbles and prevent the accumulation of bubbles, the upper water jacket 8 corresponding to one unit of the lower water jacket on the cylinder head adopts a cut-off corner design to form a cut-off corner 8-3, and the cut-off corner 8-3 is distributed at the diagonal of the degassing head 11. Four hollow holes 7-2 are arranged around one unit of the lower water jacket on the cylinder head. The above-mentioned design of the cut-off corner and the hollow holes is mainly based on reducing unnecessary areas in the inner cavity of the water jacket, which can not only improve the water flow effect, but also effectively reduce the generation of bubbles in the inner cavity and the retention of bubbles, and is beneficial to significantly improving the performance indexes of the overall components. Four hollow holes are arranged around the lower water jacket on the cylinder head, which can effectively prevent the formation of eddy currents in the annular area, reduce the generation of bubbles and improve the fluid flow and heat dissipation effect at the same time. An exhaust main pipe is further included. The degassing head is connected to the exhaust main pipe through an exhaust joint. Both ends of the exhaust main pipe are communicated with the vehicle auxiliary water tank through connecting pipes 10-1 respectively. The body pipe includes a main inlet pipe 1. Three inlet branch pipes are arranged on the main inlet pipe, which are a branch pipe 2, a branch pipe 3 and a branch pipe 4 respectively. They are uniformly inlet from an inlet main port 1-1, and the inlet branch pipes are respectively communicated with the upper water jacket on the cylinder head.

[0031] As Figure 10 shown, the present invention is measured and tested at a flow rate of 500. The pressure difference between the inlet and outlet of the engine body obtained is 39.8 kPa. However, although only a flow rate of 500 is used, the result obtained is slightly better than the result of the conventional device measured and tested at a flow rate of 600, as shown in the following table:

[0032]

[0033] Therefore, under the same flow rate, although the inlet and outlet pressure difference is slightly higher than that of the traditional solution, this solution obviously has a better heat transfer coefficient. At the same time, by reducing the water pump flow rate to 500, the small flow rate of this solution can still reach or even exceed the level of the large flow rate of the traditional solution, while the resistance value decreases; and the decrease in water pump flow can reduce the power consumption of accessories and improve fuel economy. The above excellent heat exchange effect is mainly based on the above structural design of this application and benefits from the timely and effective discharge of bubbles in each key area.

[0034] like Figure 11 As shown in the figure, the main flow velocities of the six cylinders are stabilized at 1.93m / s, 1.92m / s, 1.96m / s, 1.91m / s, 1.96m / s, and 1.99m / s respectively. The maximum flow velocity deviation of each cylinder is only 0.08m / s, which ensures the uniformity of cooling of each cylinder, improves the consistency of the operation of each cylinder, and thus improves the overall efficiency of the engine. This is mainly due to the reasonable structural design and the timely and effective discharge of bubbles in each cylinder, thereby improving the uniformity.

[0035] like Figure 12 As shown, on the left is the flow velocity diagram of the inlet-intake valve nose bridge area, and on the right is the flow velocity diagram of the row-row nose bridge area. The most urgent problem to be solved is the flow velocity problem of the row-row nose bridge area. It can be seen from the figure that the flow velocity of the row-row nose bridge area is as high as 4.5m / s, which effectively ensures efficient and rapid control and distribution of water, ensuring that the exhaust nose bridge area that requires strong cooling has more cooling water cooling, thereby improving the overall heat transfer coefficient and controlling the flow resistance. This is also due to the reasonable design of the structure of the present application and the high smoothness of gas discharge.

Claims

1. An air removal and water cooling assembly for an engine, characterized in that: It includes a body pipeline, an upper water jacket on the cylinder head, a lower water jacket on the cylinder head, and a body water jacket; the body pipeline is communicated with the upper water jacket on the cylinder head; a first communication water channel is arranged at the center of the lower side of the upper water jacket on the cylinder head and is communicated with the lower water jacket on the cylinder head; a plurality of second communication water channels are arranged on the front and rear sides of the lower water jacket on the cylinder head respectively and are communicated with the body water jacket; water outlets are arranged at the left part of the front side and the right part of the rear side of the body water jacket respectively; a degassing head is arranged at the top of the upper water jacket on the cylinder head; A plurality of exhaust small pipes are further arranged between the upper water jacket on the cylinder head and the lower water jacket on the cylinder head; the exhaust small pipes are distributed corresponding to the second communication water channels or are distributed at the corners; The lower water jacket on the cylinder head is designed to be slightly convex along the front and rear sides as a whole; the upper water jacket on the cylinder head is provided with a gas collecting convex ring in the middle of its top surface, and a degassing head is further arranged on one side thereof. The degassing head is higher than the gas collecting convex ring, and an inclined exhaust cavity is arranged between the degassing head and the gas collecting convex ring.

2. The degassing and water-cooling assembly for an engine according to claim 1, wherein: A gas collecting protrusion is further arranged at the lower end of the exhaust small pipe, and the gas collecting protrusion is distributed on the lower water jacket on the cylinder head.

3. The degassing and water-cooling assembly for an engine according to claim 1, wherein: The lower water jacket on the cylinder head takes one unit of the body water jacket as a unit. Two second communication water channels are arranged on the front and rear sides respectively corresponding to one unit of the body water jacket. Among them, one exhaust small pipe is arranged for every second communication water channel corresponding to three second communication water channels. At the same time, a first communication water channel corresponding to the upper water jacket on the cylinder head is arranged at the center thereof.

4. The degassing and water-cooling assembly for an engine according to claim 1, wherein: It further includes an exhaust main pipe. The degassing head is connected to the exhaust main pipe through an exhaust joint; both ends of the exhaust main pipe are communicated to the vehicle auxiliary water tank through connecting pipes respectively.

5. The deaeration water cooling assembly for an engine according to claim 1, wherein: The body pipeline includes a main water inlet pipeline, and three water inlet branch pipes are arranged on the main water inlet pipeline. The water inlet branch pipes are communicated with the upper water jacket on the cylinder head respectively.

6. The deaeration water cooling assembly for an engine according to claim 3, wherein: The upper water jacket on the cylinder head corresponding to one unit of the lower water jacket on the cylinder head adopts a cut-off corner design, and the cut-off corner is distributed at the diagonal of the degassing head; four hollow holes are arranged around one unit of the lower water jacket on the cylinder head.

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