V-shaped engine cooling water jacket and V-shaped engine

Abstract

The V-shaped engine cooling water jacket comprises a first water distribution cavity and a second water distribution cavity which are communicated through a water inlet cavity, the first water distribution cavity and the second water distribution cavity are each provided with a plurality of water outlets, and the water outlets correspond to engine cylinders one to one; a water inlet is formed in 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 conducts flow guide on cooling liquid entering the second water distribution cavity, and the second flow guide structure conducts flow guide on a water outlet, close to the water inlet, of the second water distribution cavity; the communicated water inlet cavity, the first water distribution cavity and the second water distribution cavity form a U-shaped structure; according to the cooling water jacket suitable for the V-shaped engine, the cooling water jacket forms a three-dimensional structure of a smooth channel in the water inlet cavity, so that the fluidity of cooling liquid is improved, the flowing resistance of the cooling liquid is reduced, and the distribution uniformity of the cooling liquid is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of engine cooling water jackets, and in particular to a V-shaped engine cooling water jacket and a V-shaped engine. Background Art

[0002] A V-type engine is an engine that divides all cylinders into two groups, arranges adjacent cylinders at a certain angle, and forms a plane with an angle between the two groups of cylinders. When viewed from the side, the cylinders are in a V shape. The height and length of a V-type engine are small, and it is more convenient to arrange it in a car. It is easy to increase the displacement and power by expanding the cylinder diameter and is suitable for a higher number of cylinders.

[0003] The function of the cooling water jacket is to transfer the heat energy from the temperature of the engine combustion chamber and the inner wall of the cylinder body to the coolant through heat conduction. Since the liquid is flowable, it circulates to the radiator through the water pump. The radiator dissipates the heat to the coolant through the flow of external air. The superheated coolant then circulates to the engine water jacket to receive the heat generated when the engine is working, and the cycle continues.

[0004] The existing V-type engine is connected to the left and right sides through the middle channel, and the water flow is evenly distributed by adjusting the flow rate. The middle channel is a porous water pipe. When the cooling water circulates from the water tank to the engine, it enters each cylinder through the porous water pipe for cooling. Since the porous water pipe has only one water inlet and the corresponding water outlets are more, this will cause uneven distribution of the coolant. The cooling effect is better near the water inlet, and the effect is worse at places far from the water inlet. 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 coolant. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a V-type engine cooling water jacket and a V-type engine, which can evenly distribute the coolant by setting a guide structure, thereby improving the cooling capacity of the cylinder head of each cylinder.

[0006] The technical solution of the present invention is as follows:

[0007] In a first aspect of the present invention, a V-shaped engine cooling water jacket is provided, comprising a first water distribution chamber and a second water distribution chamber connected via a water inlet chamber, wherein the first water distribution chamber and the second water distribution chamber are both provided with a plurality of water outlets, and the water outlets correspond one to one with engine cylinders; a water inlet is provided at a position of the water inlet chamber close to the second water distribution chamber, and a first guide structure and a second guide structure are provided at the water inlet, wherein the first guide structure guides the coolant entering the second water distribution chamber, and the second guide structure guides the water outlet close to the water inlet on the second water distribution chamber; the connected water inlet chamber, the first water distribution chamber and the second water distribution chamber form a U-shaped structure.

[0008] In some embodiments of the present invention, the first flow guiding structure is an arc flow guiding structure.

[0009] In some embodiments of the present invention, an intercooler water inlet is provided on the water inlet cavity, and the arc guide structure connects the intercooler water inlet and the second water distribution cavity.

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

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

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

[0013] In some embodiments of the present invention, the water inlet is connected to a water pump via a pipeline, and the water pump is connected to a coolant tank via a pipeline.

[0014] In some embodiments of the present invention, the water outlet on the first water distribution chamber and the water outlet on the second water distribution chamber are symmetrically arranged.

[0015] In a second aspect of the present invention, a V-type engine is provided, comprising the V-type engine cooling water jacket as described in the first aspect, wherein the V-type engine cooling water jacket is located above a cylinder block of the V-type engine.

[0016] In some embodiments of the present invention, the water outlets on the first water distribution chamber and the second water distribution chamber are connected to a V-shaped engine cylinder block.

[0017] One or more technical solutions of the present invention have the following beneficial effects:

[0018] (1) The present invention provides a cooling water jacket suitable for a V-type engine, wherein a large curvature arc transition guide structure and a small rib plate guide structure are arranged at a water inlet of the cooling water jacket, so that a three-dimensional structure of a smooth channel is formed in a water inlet cavity, which is beneficial to increase the fluidity of the coolant, reduce the flow resistance of the coolant, and ensure the uniformity of the coolant distribution.

[0019] (2) The V-type engine cooling water jacket provided by the present invention has an overall U-shaped structure. According to the characteristic that the water inlet is biased towards the B side, a large curvature arc transition guide structure is set to increase the flow of coolant entering the B side, so as to achieve relative uniformity between the A side and the B side; by setting an additional rib plate guide structure, the water flow distribution is locally adjusted, the flow of the cylinder near the water inlet is reduced, and uniform cooling of each cylinder is achieved. The flow of the B1 cylinder is controlled, which can significantly improve the cooling uniformity of each cylinder.

[0020] (3) In the V-type engine cooling water jacket provided by the present invention, the coolant enters the cooling water jacket from one side after being discharged by the water pump, and then is distributed to the left and right cooling water jackets for cooling respectively. However, the inlet is biased to one side, which will cause the problem of water flow uniformity on both sides. Therefore, under the condition of a certain water pump flow rate, in order to ensure sufficient cooling of the cylinders on both sides, a first guide structure and a second guide structure are added to the front water inlet to make the coolant evenly distributed, thereby improving the cooling capacity of the cylinder head of each cylinder.

[0021] (4) In the V-type engine cooling water jacket provided by the present invention, the first guide structure and the second guide structure cooperate with each other and work together to guide the coolant in the water inlet chamber, which not only ensures that the coolant flow entering the A side and the B side is relatively uniform, but also ensures that the coolant flow entering each cylinder is relatively uniform, thereby improving the cooling effect of the coolant on each cylinder body.

[0022] (5) The V-type engine cooling water jacket provided by the present invention can enhance the water pump utilization efficiency and the cooling efficiency of the coolant under the condition of a certain water pump flow rate, ensure the cooling uniformity of each cylinder of the engine cylinder head, reduce the deformation of the engine cylinder bore in the hot state, increase the thermal fatigue life of the cylinder head, and enhance the engine reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a V-type engine cooling water jacket of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the V-type engine cooling water jacket of the present invention;

[0025] Figure 3 It is a side view of a V-type engine cooling water jacket of the present invention installed on an engine.

[0026] In the figure: 1. First water distribution chamber; 2. Second water distribution chamber; 3. Water inlet chamber; 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 present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1

[0029] In view of the problem that the existing V-type engine is connected to the left and right sides through the middle channel, there are problems such as uneven distribution of coolant and low coolant utilization efficiency. In a typical embodiment of the present invention, a V-type engine cooling water jacket is proposed, such as Figure 1-3 As shown, it includes a first water distribution chamber 1 and a second water distribution chamber 2 connected by a water inlet chamber 3, and a plurality of water outlets 8 are arranged on the first water distribution chamber 1 and the second water distribution chamber 2, and the water outlets 8 correspond to the engine cylinders one by one; a water inlet 7 is arranged at a position of the water inlet chamber 3 close to the second water distribution chamber 2, and a first guide structure 4 and a second guide structure 5 are arranged at the water inlet 7, the first guide structure 4 guides the coolant entering the second water distribution chamber 2, and the second guide structure 5 guides the water outlet close to the water inlet 7 on the second water distribution chamber 2; the connected water inlet chamber 3, the first water distribution chamber 1 and the second water distribution chamber 2 form a U-shaped structure.

[0030] The present invention proposes to replace the original middle channel with two parallel water distribution chambers, and use the two water distribution chambers to cool the cylinders on the A side and the B side of the engine respectively. Considering the problem of pipeline layout, the water inlet on the water inlet chamber 3 needs to be set biased towards the second water distribution chamber 2, which will bring about the problem of water flow uniformity on both sides. Therefore, under the condition of a certain water pump flow rate, in order to ensure sufficient cooling of the cylinders on both sides, a first guide structure 4 and a second guide structure 5 are added to the front water inlet to make the coolant evenly distributed and improve the cooling capacity of the cylinder head of each cylinder.

[0031] Specifically, the first flow guide structure 4 adopts an arc flow guide structure. Furthermore, an intercooler water inlet 6 is arranged on the water inlet chamber 3. The arc flow guide structure connects the intercooler water inlet 6 and the second water distribution chamber 2. When the coolant enters the water inlet chamber 3, it is easy to enter the A side along the bend of the intercooler water inlet 6 at the intercooler water inlet, resulting in a smaller flow of coolant entering the B side. Therefore, by setting up the arc flow guide structure, a large curvature is used for a smooth transition, which can adjust the volume of the area here, increase the flow of coolant entering the B side, and achieve relative uniformity between the A side and the B side.

[0032] In this embodiment, the intercooler water inlet 6 is located in the middle of the upper surface of the water inlet chamber 3 .

[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 plate guide structure, and the rib plate guide structure is arranged between the water inlet 7 and the water outlet 8 close to the water inlet 7. The rib plate guide structure protrudes upward in the cavity, and plays a guiding role for the coolant entering from the water inlet. Since the first cylinder body on the B side is closer to the water inlet, the rib plate guide structure can partially block the coolant entering the first cylinder body on the B side, thereby realizing the control of the coolant flow of the first cylinder body.

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

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

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

[0038] like Figure 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 chamber 3, and needs to enter the first water distribution chamber 1 on the A side, the second water distribution chamber 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, which affects 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 body and cylinder head on the A side and the B side is better; 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 a 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 water jacket provided in the present embodiment is provided with a U-shaped structure for the cooling water jacket. The coolant entering the water inlet cavity is divided into two paths to transport the coolant to the cylinder. Compared with the existing solution of using an intermediate channel to connect and distribute to the left and right sides, the number of water outlet holes on the intermediate channel can be reduced, thereby ensuring that the coolant flow entering each cylinder is uniform, and achieving sufficient cooling of each cylinder; at the same time, the uniform coolant flow entering the A side and the B side is ensured by the first guide structure, and the uniform coolant flow entering each cylinder is ensured by the second guide structure. The first guide structure and the second guide structure cooperate with each other and work together to ensure the uniformity of cooling of each cylinder of the engine body cylinder head, reduce the deformation of the hot cylinder bore of the engine body, increase the thermal fatigue life of the cylinder head, and improve the reliability of the engine.

[0040] Example 2

[0041] In a typical embodiment of the present invention, a V-type engine is provided, comprising the V-type engine cooling water jacket described in Example 1, wherein the V-type engine cooling water jacket is located above the V-type engine cylinder block.

[0042] Furthermore, the water outlets on the first water distribution chamber and the second water distribution chamber are connected to a V-shaped engine cylinder block.

[0043] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A V-type engine cooling water jacket, characterized in that: It comprises a first water distribution chamber and a second water distribution chamber connected through a water inlet chamber, wherein a plurality of water outlets are arranged on the first water distribution chamber and the second water distribution chamber, and the water outlets correspond to the engine cylinders one by one; a water inlet is arranged at a position of the water inlet chamber close to the second water distribution chamber, and a first guide structure and a second guide structure are arranged at the water inlet, wherein the first guide structure guides the coolant entering the second water distribution chamber, and the second guide structure guides the water outlet close to the water inlet on the second water distribution chamber; The connected water inlet cavity, the first water distribution cavity and the second water distribution cavity form a U-shaped structure.

2. The V-type engine cooling water jacket according to claim 1, characterized in that: The first flow guiding structure adopts an arc flow guiding structure.

3. The V-type engine cooling water jacket according to claim 2, characterized in that: The water inlet of the intercooler is arranged on the water inlet cavity, and the arc flow guiding structure connects the water inlet of the intercooler and the second water distribution cavity.

4. The V-type engine cooling water jacket according to claim 3, characterized in that: The intercooler water inlet is located in the middle of the upper surface of the water inlet cavity.

5. The V-type engine cooling water 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 where the water inlet cavity is connected to the second water distribution cavity.

6. The V-type engine cooling water jacket according to claim 1, characterized in that: The second flow-guiding structure adopts a rib plate flow-guiding structure, and the rib plate flow-guiding structure is arranged between the water inlet and the water outlet close to the water inlet.

7. The V-type engine cooling water jacket according to claim 1, characterized in that: The water inlet is connected to a water pump through a pipeline, and the water pump is connected to a coolant tank through a pipeline.

8. The V-type engine cooling water jacket according to claim 1, characterized in that: The water outlet on the first water distribution chamber and the water outlet on the second water distribution chamber are symmetrically arranged.

9. A V-type engine, characterized in that: It comprises a V-type engine cooling water jacket as described in any one of claims 1 to 8, wherein the V-type engine cooling water jacket is located above a V-type engine cylinder block.

10. The V-type engine according to claim 9, characterized in that: The water outlets on the first water distribution chamber and the second water distribution chamber are connected to a V-shaped engine cylinder block.

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