A V-type engine cooling jacket and a V-type engine

Abstract

The application discloses a V-type engine cooling water jacket and an engine, which comprises a first water distribution cavity and a second water distribution cavity which are communicated through a water inlet cavity, a plurality of water outlets are arranged on the first water distribution cavity and the second water distribution cavity, and the water outlets correspond to engine cylinders one by one; a water inlet is arranged at a position close to the second water distribution cavity of the water inlet cavity, a first flow guide structure and a second flow guide structure are arranged at the water inlet, the first flow guide structure guides the cooling liquid entering the second water distribution cavity, and the second flow guide structure guides the cooling liquid entering the water outlet close to the water inlet on the second water distribution cavity; the water inlet cavity, the first water distribution cavity and the second water distribution cavity form a U-shaped structure after being communicated; the application is suitable for the cooling water jacket of the V-type engine, the cooling water jacket forms a smooth channel three-dimensional structure in the water inlet cavity, is favorable for increasing the flowability of the cooling liquid, reducing the flow resistance of the cooling liquid and ensuring the uniformity of the cooling liquid distribution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine cooling water jacket, in particular to a V-type engine cooling water jacket and V-type engine. BACKGROUND

[0002] V-type engine is to divide all the cylinders into two groups, and arrange the adjacent cylinders together with a certain angle, so that the two groups of cylinders form a plane with an angle, and the cylinders look like a V-shaped engine from the side. The height and length of the V-type engine are small, and it is convenient to arrange on the car. It is convenient to increase displacement and power by expanding the cylinder diameter, and it is suitable for a higher number of cylinders.

[0003] The function of the cooling water jacket is to transfer heat energy from the engine combustion chamber and the inner wall of the cylinder body to the cooling liquid through heat conduction. Since the liquid is flowable, it is circulated to the radiator by the water pump, and the radiator dissipates heat to the cooling liquid through the flow of external air, and the overheated cooling liquid is circulated to the engine water jacket to receive the heat generated during engine operation, and so on.

[0004] The existing V-type engine is connected to the left and right sides through the middle channel, and the flow size is adjusted to meet the uniform distribution of water flow. The middle channel is a porous water pipe. When the cooling water circulating from the water tank reaches the engine, it enters each cylinder for cooling through the porous water pipe. Since the porous water pipe has only one water inlet and a large number of water outlets, this will lead to uneven distribution of cooling liquid. In places close to the water inlet, the cooling effect is good, and in places far from the water inlet, the effect is poor. In the long run, it will affect the average service life of the engine. In addition, in order to meet the cooling effect of each cylinder, the water pump flow needs to be increased, which reduces the utilization rate of the cooling liquid. SUMMARY

[0005] In view of the problems existing in the prior art, the present application provides a V-type engine cooling water jacket and V-type engine. The flow guide structure is arranged to make the cooling liquid evenly distributed, and the cooling capacity of the cylinder head of each cylinder is improved.

[0006] The technical scheme of the present application is as follows:

[0007] In a first aspect of the present application, a V-type engine cooling jacket is provided, comprising a first water distribution cavity and a second water distribution cavity connected by a water inlet cavity, a plurality of water outlets are arranged on the first water distribution cavity and the second water distribution cavity, and the water outlets correspond to the engine cylinders one by one; a water inlet is arranged on the position close to the second water distribution cavity of the water inlet cavity, a first flow guide structure and a second flow guide structure are arranged at the water inlet, the first flow guide structure guides the cooling liquid entering the second water distribution cavity, and the second flow guide structure guides the water outlet close to the water inlet entering the second water distribution cavity; the water inlet cavity, the first water distribution cavity and the second water distribution cavity form a U-shaped structure after being connected.

[0008] In some embodiments of the present application, the first flow guide structure adopts a circular arc flow guide structure.

[0009] In some embodiments of the present application, a water inlet of the intercooler is arranged on the water inlet cavity, and the circular arc flow guide structure connects the water inlet of the intercooler and the second water distribution cavity.

[0010] In some embodiments of the present application, the water inlet of the intercooler is located at the middle position of the upper surface of the water inlet cavity.

[0011] In some embodiments of the present application, the water inlet is located at the lower part of the water inlet cavity, and the water inlet is located at the corner position where the water inlet cavity and the second water distribution cavity are connected.

[0012] In some embodiments of the present application, the second flow guide structure adopts a rib plate flow guide structure, and the rib plate flow guide structure is arranged between the water inlet and the water outlet close to the water inlet.

[0013] In some embodiments of the present application, the water inlet is connected with a water pump through a pipeline, and the water pump is connected with a cooling liquid tank through a pipeline.

[0014] In some embodiments of the present application, the water outlets on the first water distribution cavity and the second water distribution cavity are symmetrically arranged.

[0015] In a second aspect of the present application, a V-type engine is provided, comprising the V-type engine cooling jacket of the first aspect, and the V-type engine cooling jacket is located above the cylinder block of the V-type engine.

[0016] In some embodiments of the present application, the water outlets on the first water distribution cavity and the second water distribution cavity are connected with the cylinder block of the V-type engine.

[0017] The one or more technical solutions of the present application have the following beneficial effects:

[0018] (1) The application provides a cooling water jacket suitable for a V-type engine, which is provided with a large-curvature arc transition flow guide structure and a small rib plate flow guide structure at a water inlet, and forms a smooth three-dimensional structure in a water inlet cavity, which is beneficial to increasing the flowability of cooling liquid, reducing the flow resistance of the cooling liquid, and ensuring the uniformity of cooling liquid distribution.

[0019] (2) The V-type engine cooling water jacket provided by the application has a U-shaped structure, according to the characteristics that the water inlet is deviated to the B side, the large-curvature arc transition flow guide structure is arranged, the flow of the cooling liquid entering the B side is increased, the relative uniformity of the A side and the B side is achieved, the increased rib plate flow guide structure is arranged, the water flow distribution is locally adjusted, the flow of the cylinder near the water inlet is reduced, the uniform cooling of each cylinder is realized, the flow of the B1 cylinder is controlled, and the cooling uniformity of each cylinder can be obviously improved.

[0020] (3) The V-type engine cooling water jacket provided by the application is characterized in that the cooling liquid enters the cooling water jacket from one side after being discharged from the water pump, and then is distributed to the left and right cooling water jackets for cooling, respectively, and the inlet is deviated to one side, which causes the uniformity problem of the water flow on both sides, therefore, under the condition that the flow of the water pump is constant, in order to ensure the sufficient cooling of each cylinder on both sides, the first flow guide structure and the second flow guide structure are arranged at the front water inlet, so that the cooling liquid is uniformly distributed and the cylinder head cooling capacity of each cylinder is improved.

[0021] (4) The V-type engine cooling water jacket provided by the application is characterized in that the first flow guide structure and the second flow guide structure cooperate with each other and jointly act on the flow guide of the cooling liquid in the water inlet cavity, which not only ensures the relative uniformity of the cooling liquid flow entering the A side and the B side, but also ensures the relative uniformity of the cooling liquid flow entering each cylinder, and improves the cooling effect of the cooling liquid on each cylinder.

[0022] (5) The V-type engine cooling water jacket provided by the application can improve the utilization efficiency of the water pump and the cooling efficiency of the cooling liquid under the condition that the flow of the water pump is constant, ensure the uniformity of the cooling of each cylinder of the cylinder head, reduce the deformation of the cylinder hole in the hot state of the machine body, improve the thermal fatigue life of the cylinder head, and improve the reliability of the engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a schematic diagram of the overall structure of the V-type engine cooling water jacket of the application;

[0024] Fig. 2 It is a schematic diagram of the internal structure of the V-type engine cooling water jacket of the application;

[0025] Fig. 3 It is a side view of the V-type engine cooling water jacket of the application installed on the engine.

[0026] In the figure: 1, first water distribution cavity; 2, second water distribution cavity; 3, water inlet cavity; 4, first flow guide structure; 5, second flow guide structure; 6, intercooler water inlet; 7, water inlet; 8, water outlet; 9, B1 cylinder. DETAILED DESCRIPTION

[0027] The application will be further described below in combination with the accompanying drawings and examples.

[0028] Example 1

[0029] In view of the existing V-type engine connected by the middle channel and distributed to the left and right sides, there are problems of uneven distribution of coolant and low utilization efficiency of coolant, in a typical embodiment of the application, a V-type engine cooling jacket is provided, as shown in the figure, comprising a first water distribution cavity 1 and a second water distribution cavity 2 connected by a water inlet cavity 3, a plurality of water outlets 8 are arranged on the first water distribution cavity 1 and the second water distribution cavity 2, the water outlets 8 correspond to the engine cylinders one by one; the water inlet 7 is arranged at the position close to the second water distribution cavity 2 of the water inlet cavity 3, the first flow guide structure 4 and the second flow guide structure 5 are arranged at the water inlet 7, the first flow guide structure 4 guides the coolant entering the second water distribution cavity 2, and the second flow guide structure 5 guides the coolant entering the water outlet close to the water inlet 7 on the second water distribution cavity 2; the water inlet cavity 3, the first water distribution cavity 1 and the second water distribution cavity 2 after being connected form a U-shaped structure. Figs. 1-3 The application proposes to replace the original middle channel with two parallel arranged water distribution cavities, and to cool the cylinders on the A side and the B side of the engine by using the two water distribution cavities, considering the problem of pipeline arrangement, the water inlet on the water inlet cavity 3 needs to be arranged towards the second water distribution cavity 2, which will cause the problem of uniformity of water flow on both sides, therefore, under the condition of certain water pump flow, in order to ensure sufficient cooling of each cylinder on both sides, the first flow guide structure 4 and the second flow guide structure 5 are added at the front water inlet, so as to make the coolant distribution uniform and improve the cooling capacity of the cylinder head of each cylinder.

[0030] Specifically, the first flow guide structure 4 adopts a circular arc flow guide structure, further, the intercooler water inlet 6 is arranged on the water inlet cavity 3, the circular arc flow guide structure connects the intercooler water inlet 6 and the second water distribution cavity 2, when the coolant enters the water inlet cavity 3, it is easy to enter the A side along the curve of the intercooler water inlet at the intercooler water inlet 6, resulting in less flow of coolant entering the B side, therefore, by setting the circular arc flow guide structure with large curvature for smooth transition, the volume of this area can be adjusted, so as to increase the flow of coolant entering the B side, and achieve relative uniformity of the A side and the B side.

[0031] In this embodiment, the intercooler water inlet 6 is located at the middle position of the upper surface of the water inlet cavity 3.

[0032]

[0033] ​In this embodiment, the water inlet 7 is located at the lower part of the water inlet chamber 3 , and the water inlet 7 is located at the corner where the water inlet chamber 3 is connected to the second water distribution chamber 2 .

[0034] In this embodiment, the second guide structure 5 adopts a rib guide structure, which is arranged between the water inlet 7 and the water outlet 8 close to the water inlet 7. The rib guide structure protrudes upward in the cavity, and guides the coolant entering from the water inlet. Since the first cylinder on the B side is closer to the water inlet, the rib guide structure can partially block the coolant entering the first cylinder on the B side, thereby realizing the control of the coolant flow of the first cylinder.

[0035] In this embodiment, the water inlet 7 is connected to the water pump through a pipe, and the water pump is connected to the coolant tank through a pipe. The coolant in the cooling water tank is pumped into the V-type engine cooling water jacket by the water pump, and the first water distribution cavity 1 and the second water distribution cavity 2 on the V-type engine cooling water jacket are used to evenly transport the coolant to each cylinder.

[0036] In this embodiment, the water outlet on the first water distribution cavity and the water outlet on the second water distribution cavity are symmetrically arranged.

[0037] The working principle of the V-type engine cooling water jacket provided in this embodiment is as follows:

[0038] like Fig. 2 As shown, during operation, after the coolant is discharged from the water pump, it enters the cooling water jacket through the water inlet 7 for cooling. The coolant first passes through the spatial bend structure into the water inlet cavity 3, and needs to enter the first water distribution cavity 1 on the A side, the second water distribution cavity 2 on the B side, and the intercooler water inlet 6 at the same time. At this time, the coolant can easily flow to the A side along the bend at the intercooler water inlet 6, while the flow rate on the B side is relatively small, affecting the cooling uniformity. The present invention adds a large curvature arc transition guide structure as the first guide structure 4, and at the same time adjusts the volume of the area here to increase the flow of coolant entering the B side, so as to achieve relative uniformity between the A side and the B side, and the flow of the intercooler water intake 30 is controlled by the diameter of the water inlet pipe, and it is found through simulation that the cooling uniformity of the A side and B side body and cylinder head is better; and when entering the B side, because the B1 cylinder 9 is close to the water inlet 7, the flow entering the B1 cylinder 9 needs to be controlled, so the rib plate guide structure is added as the second guide structure 5 to control the flow of the B1 cylinder, and it is found through simulation that the cooling uniformity of each cylinder is significantly improved.

[0039] The V-type engine cooling jacket provided by the embodiment is arranged in a U-shaped structure, cooling liquid entering the water inlet cavity is divided into two paths to deliver the cooling liquid to the cylinder, compared with the prior scheme of connecting the middle channel to distribute to the left and right sides, the water outlet holes on the middle channel can be reduced, and then the cooling liquid flow entering each cylinder can be ensured to be uniform, full cooling of each cylinder is realized, meanwhile, the first flow guide structure is arranged to ensure the uniform flow of the cooling liquid entering the A side and the B side, the second flow guide structure is arranged to ensure the uniform flow of the cooling liquid entering each cylinder, the first flow guide structure and the second flow guide structure are matched with each other and jointly act to ensure the uniform cooling of each cylinder of the cylinder head of the engine body, reduce the deformation of the hot cylinder hole of the engine body, improve the thermal fatigue life of the cylinder head, and improve the reliability of the engine.

[0040] Embodiment 2

[0041] In a typical embodiment of the present application, a V-type engine is provided, which comprises the V-type engine cooling jacket described in Embodiment 1, and the V-type engine cooling jacket is located above the V-type engine cylinder body.

[0042] Further, the water outlet on the first water distribution cavity and the second water distribution cavity is connected with the V-type engine cylinder body.

[0043] Although the specific embodiments of the present application are described above with reference to the drawings, the description is not a limitation on the protection scope of the present application, and those skilled in the art should understand that various modifications or changes made on the basis of the technical scheme of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A cooling water jacket for a V-type engine, characterized by, The first water distribution cavity and the second water distribution cavity are communicated through the water inlet cavity, and a plurality of water outlets are arranged on the first water distribution cavity and the second water distribution cavity, and the water outlets correspond to the engine cylinders one by one; the water inlet is arranged on the position close to the second water distribution cavity of the water inlet cavity, the first flow guide structure and the second flow guide structure are arranged at the water inlet, the first flow guide structure guides the cooling liquid entering the second water distribution cavity, and the second flow guide structure guides the cooling liquid entering the water outlet close to the water inlet on the second water distribution cavity; The water inlet cavity, the first water distribution cavity and the second water distribution cavity form a U-shaped structure after being communicated; The first flow guide structure adopts a circular arc flow guide structure; The water inlet cavity is provided with a water outlet of the intercooler, and the circular arc flow guide structure connects the water outlet of the intercooler and the second water distribution cavity; The second flow guide structure adopts a rib plate flow guide structure, and the rib plate flow guide structure is arranged between the water inlet and the water outlet close to the water inlet.

2. The V-engine cooling jacket according to claim 1, characterized in that, The water outlet of the intercooler is located at the middle position of the upper surface of the water inlet cavity.

3. The V-engine cooling jacket according to claim 1, characterized in that, The water inlet is located at the lower part of the water inlet cavity, and the water inlet is located at the corner position where the water inlet cavity and the second water distribution cavity are communicated.

4. The V-engine cooling jacket according to claim 1, characterized in that, The water inlet is connected with the water pump through a pipeline, and the water pump is connected with the cooling liquid tank through a pipeline.

5. The V-engine cooling jacket according to claim 1, characterized in that, The water outlets on the first water distribution cavity and the second water distribution cavity are symmetrically arranged.

6. A V-type engine characterized by comprising: The V-type engine cooling jacket comprises the V-type engine cooling jacket according to any one of claims 1-5, and the V-type engine cooling jacket is located above the cylinder body of the V-type engine.

7. The V-engine according to claim 6, characterized in that The water outlets on the first water distribution cavity and the second water distribution cavity are connected with the cylinder body of the V-type engine.

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