Piston cooling nozzle, engine and vehicle

Abstract

The utility model discloses a piston cooling nozzle, an engine and a vehicle. Comprising a valve body in which a cooling flow channel is formed; the valve element is arranged in the cooling flow channel, the valve element divides the cooling flow channel into a first part and a second part which are arranged in the extending direction of the cooling flow channel in a spaced mode, and the valve element is provided with a plurality of communicating flow channels connected in parallel; the valve element is configured to have a first state and a second state, and when the valve element is in the first state, the first part communicates with the second part through a plurality of communicating runners connected in parallel; when the valve element is in the second state, the first part and the second part are isolated from each other. According to the piston cooling nozzle, the communicating channels connected in parallel are formed in the valve element, so that cooling oil can pass through the communicating channels to reach the nozzle outlet to spray oil to the piston when passing through the valve element, the oil passing amount of the piston cooling nozzle is increased, and the oil spraying efficiency of the piston is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of engine parts, and particularly relates to a piston cooling nozzle, an engine and a vehicle. Background Technique

[0002] The piston is a key component of the engine. When the engine is working, due to the high temperature in the combustion chamber, the piston is extremely prone to overheating. To avoid major failures, the piston needs to dissipate heat in time. The oil injection cooling method is mostly used to reduce the piston heat load and take away the heat on the piston.

[0003] In the related technology, the piston cooling nozzle includes a valve body and a valve core. A spring is arranged in the valve core. When the cooling oil passes through the valve core, it usually flows into the central flow channel of the spring through the pitch gap of the spring and then flows out through the oil outlet on the valve body, so as to inject oil on the piston.

[0004] In this way, the cooling oil can only pass through the central flow channel of the spring when passing through the valve core, resulting in a small oil flow through the position of the valve core, so that the oil flow of the piston cooling nozzle is small, the cooling oil ejected from the oil outlet is reduced, and the oil injection efficiency of the piston is reduced. Content of the Utility Model

[0005] In view of the above defects or deficiencies in the related technology, it is desirable to provide a piston cooling nozzle, an engine and a vehicle.

[0006] In the first aspect, the utility model provides a piston cooling nozzle, which includes a valve body and a valve core; a cooling flow channel is opened in the valve body; the valve core is arranged in the cooling flow channel, and the valve core divides the cooling flow channel into a first part and a second part which are arranged at intervals along the extension direction of the cooling flow channel. The valve core is provided with a plurality of parallel communication channels; the valve core is configured to have a first state and a second state. When the valve core is in the first state, the first part and the second part are communicated through a plurality of parallel communication channels; when the valve core is in the second state, the first part and the second part are isolated from each other.

[0007] The piston cooling nozzle provided in the first aspect enables the cooling oil to reach the nozzle outlet through a plurality of communication channels when passing through the valve core to inject oil on the piston by opening a plurality of parallel communication channels in the valve core, thereby expanding the oil flow of the piston cooling nozzle and improving the oil injection efficiency of the piston.

[0008] As an optional solution, the valve core includes a fixing part and a blocking part. Through holes respectively communicating with the first part and the second part are opened in the fixing part. The blocking part is arranged in the through hole and can block or open the through hole to enable the valve core to switch between the first state and the second state;

[0009] The plurality of communication channels at least includes a first communication channel and a second communication channel; a first communication channel is formed inside the barrier member, and a gap between the barrier member and the inner wall of the through hole forms a second communication channel.

[0010] As an alternative, the barrier member includes a helical spring and a moving member. The moving member is disposed on the first end of the helical spring, and the second end of the helical spring is fixed to the fixed member;

[0011] The extending direction of the helical spring is consistent with the extending direction of the through hole. The inner space of the helical spring forms a first communication channel, and a gap between the outer diameter of the helical spring and the inner wall of the first sub-hole forms a second communication channel;

[0012] A through hole communicating with the through hole is formed at one end of the fixed member adjacent to the second part; when the valve core is in the first state, the through hole communicates with the second part through the through hole; when the valve core is in the second state, the moving member blocks the connection between the through hole and the through hole.

[0013] As an alternative, a gap is formed between adjacent turns of the helical spring, and the first communication channel and the second communication channel communicate through the gap.

[0014] As an alternative, the moving member is a sphere, and the inner diameter of at least part of the through hole gradually increases along the flow direction of the coolant. When the valve core is in the second state, the moving member abuts against the inner wall of the through hole with an increasing inner diameter.

[0015] As an alternative, the piston cooling nozzle further includes a cover body. The cover body is covered on one end of the through hole adjacent to the first part, the second end of the helical spring is fixed on the cover body, and a first communication hole communicating with the first communication channel is formed on the cover body.

[0016] As an alternative, the first communication hole is arranged on the central axis of the helical spring, and the inner diameter of the first communication hole is smaller than the inner diameter of the helical spring.

[0017] As an alternative, a second communication hole communicating with the second communication channel is formed on the cover body.

[0018] As an alternative, the first communication hole and the second communication hole communicate.

[0019] As an alternative, a second through hole is provided on one side of the first part away from the valve core, and the inner diameter of the second through hole is larger than the inner diameter of the first part.

[0020] As an alternative, an annular positioning portion is provided on the valve body, and the annular positioning portion is suitable for installing a positioning piece.

[0021] As an alternative, at least part of the peripheral wall of the valve body contracts inward to fix the valve core.

[0022] In a second aspect, the present utility model provides an engine, including the piston cooling nozzle of the first aspect.

[0023] In a third aspect, the present utility model provides a vehicle, including the engine of the second aspect.

[0024] In the piston cooling nozzle, engine and vehicle provided by the present utility model, the cooling nozzle is provided with a plurality of parallel communication channels in the valve core, so that the cooling oil can reach the nozzle outlet through the plurality of communication channels to spray oil on the piston when passing through the valve core, expanding the oil passing capacity of the piston cooling nozzle and improving the oil spraying efficiency on the piston. Description of the Drawings

[0025] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 Structural diagram of a piston cooling nozzle according to an embodiment provided by the present application;

[0027] Figure 2 Cross-sectional view of a piston cooling nozzle according to an embodiment provided by the present application;

[0028] Figure 3 For Figure 1 Another perspective structural diagram of the piston cooling nozzle in

[0029] Figure 4 Structural diagram of a valve core according to an embodiment provided by the present application;

[0030] Figure 5 For Figure 4 Another perspective structural diagram of the valve core in

[0031] In the figure,

[0032] 100. Valve body,

[0033] 200. Valve core, 210. Fixing member, 211. First through hole, 212. Second through hole, 213. Through hole, 220. Blocking member, 221. Helical spring, 222. Moving member, 230. Cover body, 231. First communication hole, 232. Second communication hole,

[0034] 300. Cooling flow channel, 310. First part, 320. Second part,

[0035] 400. Communication flow channel, 410. First communication flow channel, 420. Second communication flow channel,

[0036] 500. Annular positioning portion, 510. Positioning piece, 520. Bolt hole,

[0037] 600. Nozzle. Detailed implementation mode

[0038] The present application will be further described in detail below in conjunction with the accompanying drawings and implementation modes. It can be understood that the present application can be implemented in various forms and should not be limited by the implementation modes described herein. On the contrary, these implementation modes are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art. Additionally, it should be noted that for ease of description, only parts related to the present application are shown in the accompanying drawings.

[0039] It should be noted that, without conflict, the implementation modes in the present application and the features in the implementation modes can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and implementation modes.

[0040] Based on the above problems, an implementation mode of the present application provides a piston cooling nozzle 600, an engine, and a vehicle.

[0041] In a first aspect, an implementation mode of the present application provides a piston cooling nozzle 600. As Figures 1 to 5 shown, it includes a valve body 100 and a valve core 200. The valve core 200 is disposed within the valve body 100 and is capable of moving within the valve body 100. The valve body 100 realizes flow control by means of the movement of the valve core 200.

[0042] A cooling flow channel 300 is formed within the valve body 100 for cooling oil to pass through. The valve core 200 is disposed within the cooling flow channel 300 and divides the cooling flow channel 300 into a first part 310 and a second part 320 that are spaced apart along the extending direction of the cooling flow channel 300. The valve core 200 is located between the first part 310 and the second part 320. The movement of the valve core 200 can be used to adjust the oil flow rate of the nozzle 600. A plurality of parallel communication channels are provided within the valve core 200. The valve core 200 has a first state and a second state. When the valve core 200 is in the first state, i.e., the open state, the first part 310 and the second part 320 are connected through a plurality of parallel communication channels; when the valve core 200 is in the second state, i.e., the closed state, the first part 310 and the second part 320 are isolated from each other.

[0043] In the piston cooling nozzle 600 of the related art, only one cooling flow channel 300, i.e., the spring central flow channel, is provided in the valve core 200. The oil passing capacity of the valve core 200 is small, which limits the oil passing capacity of the entire nozzle 600, resulting in poor cooling effect on the piston. In the piston cooling nozzle 600 of the present application, by opening a plurality of parallel communication channels in the valve core 200, the cooling oil can pass through a plurality of communication channels when passing through the valve core 200 to reach the outlet of the nozzle 600 for spraying oil on the piston, expanding the oil passing capacity of the piston cooling nozzle 600 and improving the oil spraying efficiency and the cooling effect on the piston.

[0044] In an optional embodiment, the valve core 200 includes a fixing member 210 and a blocking member 220. The fixing member 210 is used to fix the valve core 200 in the valve body 100, and the fixing method can be welding, riveting, bonding, etc. In one embodiment, the valve core 200 is riveted in the valve body 100. After assembling the valve core 200, it is installed in the valve body 100 for riveting. The riveting direction is as Figure 2 shown. The outer wall of the valve core 200 is in interference fit with the valve body 100, so as to ensure that the position of the valve core 200 in the valve body 100 is relatively fixed. Further, after installing the valve core 200, a necking design is performed on the valve body 100, so that the peripheral wall of the valve body 100 contracts inward, as Figure 1 and 2 shown, to prevent the valve core 200 from falling off. A through hole communicating with the first part 310 and the second part 320 is opened in the fixing member 210, and the cooling oil can flow between the first part 310 and the second part 320. The blocking member 220 is arranged in the through hole and can block or open the through hole to switch the valve core 200 between the first state and the second state; specifically, when the blocking member 220 blocks the through hole, the valve core 200 is in the second state, and when the blocking member 220 opens the through hole, the valve core 200 is in the first state.

[0045] A plurality of parallel communication channels can be opened in the wall of the valve body 100, can be opened in the blocking member 220, or can also be opened in the through hole. In a preferred embodiment, the plurality of communication channels include a first communication channel 410 and a second communication channel 420. The first communication channel 410 is opened in the blocking member 220, and a gap is formed between the blocking member 220 and the inner wall of the through hole, and this gap forms the second communication channel 420. The first communication channel 410 is integrated on the blocking member 220, improving the space integration degree. The second communication channel 420 is formed by the blocking member 220 and the inner wall of the through hole, avoiding opening channels on the blocking member 220 or the wall of the valve body 100, facilitating processing and reducing the production and manufacturing cost.

[0046] In an alternative embodiment, the barrier member 220 includes a helical spring 221 and a moving member 222. The helical spring 221 and the moving member 222 cooperate to enable the barrier member 220 to open or block the through hole. As Figure 2 shown, the moving member 222 is disposed on the first end of the helical spring 221, and the second end of the helical spring 221 is fixed to the fixing member 210.

[0047] The extending direction of the helical spring 221 is consistent with the extending direction of the through hole. The inner space of the helical spring 221 forms a first communication flow channel 410, and the gap between the outer diameter of the helical spring 221 and the inner wall of the first sub-hole forms a second communication flow channel 420.

[0048] The fixing member 210 is provided with a through hole 213 adjacent to one end of the second part 320 and communicating with the through hole. When the valve core 200 is in the first state, the through hole communicates with the second part 320 through the through hole 213; when the valve core 200 is in the second state, the moving member 222 blocks the connection between the through hole 213 and the first through hole 211.

[0049] The helical spring 221 has elasticity. By means of the helical spring 221, the barrier member 220 can be opened or blocked to switch the valve core 200 between the first state and the second state. When the helical spring 221 is in a compressed state, it has a reverse acting force, which can press the moving member 222 against the connection between the through hole 213 and the first through hole 211, so as to naturally hold the barrier member 220 in the position of blocking the first through hole 211. At this time, the valve core 200 is in the second state; when it is necessary to open the barrier member 220 to allow the cooling oil to pass through, at this time the valve core 200 is in the first state, and the coolant flows from the second part 320 to the first part 310 in the cooling flow channel 300, pushing the moving member 222 to further compress the helical spring 221, so that a gap appears between the moving member 222 and the through hole 213 and the first through hole 211, and the cooling oil flows into the valve core 200 through this gap. The greater the deformation amount of the helical spring 221 when it is compressed, the greater the gap between the moving member 222 and the through hole 213 and the through hole, and the greater the oil passing amount of the valve core 200. In this way, the coolant flow rate in the valve body 100 can be adjusted.

[0050] In an alternative embodiment, a gap is formed between adjacent turns of the helical spring 221, and the first communication flow channel 410 and the second communication flow channel 420 are communicated through the gap. As Figure 2As shown, the inner circle of the helical spring 221 encloses the first communication flow channel 410, and a second communication flow channel 420 is formed between the outer circle of the helical spring 221 and the inner wall of the through hole. The pitch of the helical spring 221 is always greater than zero, so that there is a gap for the cooling oil to pass between two adjacent turns of the helical spring 221, thereby connecting the first communication flow channel 410 and the second communication flow channel 420. This implementation mode connects the two communication flow channels through the characteristics of the helical spring 221 itself, increases the oil flow rate, and at the same time can avoid setting another channel on the barrier 220, reducing the production and manufacturing difficulty.

[0051] In an alternative embodiment, the moving member 222 is a sphere, and the inner diameter of at least a part of the through hole 213 gradually increases along the flow direction of the coolant. When the valve core 200 is in the second state, the moving member 222 abuts against the inner wall of the through hole 213 with a gradually increasing inner diameter. As Figure 2 shown, the moving member 222 is set as a sphere, and a part of the through hole is set as a conical surface. When the valve core 200 is in the first state, the contact area between the moving member 222 and the inner wall of the through hole can be reduced, the frictional resistance received when the cooling oil pushes the moving member 222 can be reduced, and the change of the oil flow rate of the valve body 100 is more sensitive; when the valve core 200 is in the second state, the sphere and the conical surface can fit tightly to prevent the coolant from leaking through the gap.

[0052] In an alternative embodiment, the piston cooling nozzle 600 further includes a cover body 230. The cover body 230 is covered on one end of the through hole adjacent to the first part 310. The second end of the helical spring 221 is fixed on the cover body 230, and a first communication hole 231 communicating with the first communication flow channel 410 is opened on the cover body 230. As Figure 2 shown, a first communication hole 231 is opened on the cover body 230. The first communication hole 231 can connect the first communication flow channel 410 with the first part 310. At the same time, a certain space is reserved on the cover body 230 for installing the helical spring 221. The helical spring 221 can be connected inside the cover body 230 or outside the cover body 230. In a preferred embodiment, the first communication hole 231 is arranged on the central axis of the helical spring 221, and the inner diameter of the first communication hole 231 is smaller than the outer diameter of the helical spring 221. With such a setting, the flow distance of the oil in the first communication flow channel 410 to the first part 310 can be made the shortest, shortening the oil flow path in the nozzle 600, thereby improving the oil injection efficiency; further, as Figure 1 shown, the inner diameter of the first communication hole 231 is smaller than the outer diameter of the helical spring 221, so that one end of the helical spring 221 can abut against the peripheral part of the first communication hole 231 on the cover body 230, thus eliminating the need to set other connection structures and facilitating assembly. For the convenience of processing the valve core 200, in a preferred embodiment, the cover body 230 and the fixing member 210 are usually integrally formed.

[0053] In an alternative embodiment, as Figure 5 shown, a second communication hole 232 communicating with the second communication flow path 420 is formed in the cover 230. The second communication hole 232 can communicate the second communication flow path 420 and the first portion 310 to realize parallel connection with the first communication flow path 410, so as to increase the oil passing amount of the valve core 200. The second communication holes 232 can be multiple, and the multiple second communication holes 232 form multiple second communication flow paths 420. By setting the inner diameter and position of the second communication holes 232, the flow rate of the cooling oil can be increased simultaneously to improve the cooling efficiency of the piston.

[0054] In an alternative embodiment, as Figure 5 shown, the first communication hole 231 and the second communication hole 232 are communicated. The communication between the first communication hole 231 and the second communication hole 232 enables the first communication flow path 410 and the second communication flow path 420 to realize confluence, thereby further increasing the oil passing amount of the valve core 200. In a preferred embodiment, the second communication hole 232 penetrates the hole wall of the first communication hole 231, greatly increasing the oil passing amount. Further, the second communication hole 232 can also penetrate the side wall of the cover 230, and such a setting is more convenient for processing.

[0055] As Figures 1 - 5 shown, both the first communication hole 231 and the second communication hole 232 are provided at the top of the cover 230. The second communication holes 232 are provided in two, and the two second communication holes 232 are symmetrically arranged on both sides of the first communication hole 231. The second communication holes 232 penetrate the hole wall of the first communication hole 231 and the side wall of the cover 230. The helical spring 221 abuts against other non-opening areas at the top of the cover 230, and the cover 230 and the fixing member 210 are integrally formed. Such a setting has three advantages. One is that it is most convenient for processing, only need to groove at the top of the cover 230. The second is that the non-grooved part of the cover 230 can fix one end of the helical spring 221. The third is that the through setting at both ends of the second communication hole 232 can greatly increase the oil passing amount of the valve core 200.

[0056] In an alternative embodiment, a second through hole 212 is provided on the side of the first portion 310 away from the valve core 200, and the inner diameter of the second through hole 212 is larger than the inner diameter of the first portion 310. As Figure 1 and Figure 2 shown, the second through hole 212 is used to install the cooling nozzle 600. The larger inner diameter here can increase the flow rate of the ejected oil liquid and improve the cooling effect on the piston.

[0057] In an alternative embodiment, an annular positioning portion 500 is provided on the valve body 100. The annular positioning portion 500 is adapted to mount a positioning piece 510. A bolt mounting hole is provided on the positioning piece 510. The piston cooling nozzle 600 is mounted on the engine through the bolt hole 520 on the positioning piece 510.

[0058] In a second aspect, an embodiment of the present application provides an engine, including the piston cooling nozzle 600 of the first aspect. By applying the piston cooling nozzle 600 of the first aspect, the cooling effect on the engine piston can be significantly improved, keeping the engine in an efficient operating state.

[0059] In a third aspect, an embodiment of the present application provides a vehicle, including the engine of the second aspect. For example, the vehicle can be a hybrid vehicle, a fuel vehicle, etc. Thus, the vehicle has all the features and advantages of the aforementioned engine, which will not be elaborated here. Generally speaking, the power system of the vehicle is reliable, the structure is stable, and the service life is long.

[0060] It should be understood that the orientation or positional relationship indicated by terms such as "center", "axial direction", "circumferential direction", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the above text is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0061] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principle. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solution formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A piston cooling nozzle, characterized in that, Comprising: A valve body, within which a cooling flow channel is provided; A valve core, which is disposed within the cooling flow channel. The valve core divides the cooling flow channel into a first part and a second part that are spaced apart along the extending direction of the cooling flow channel. The valve core is provided with a plurality of parallel communication flow channels; The valve core is configured to have a first state and a second state. When the valve core is in the first state, the first part and the second part are in communication through a plurality of parallel communication flow channels; when the valve core is in the second state, the first part and the second part are isolated from each other.

2. The piston cooling nozzle according to claim 1, wherein, The valve core includes a fixing member and a blocking member. A first through hole that respectively communicates with the first part and the second part is provided within the fixing member. The blocking member is disposed within the first through hole and can block or open the first through hole to enable the valve core to switch between the first state and the second state; At least a plurality of the communication flow channels include a first communication flow channel and a second communication flow channel; the first communication flow channel is provided within the blocking member, and a gap between the blocking member and the inner wall of the first through hole forms the second communication flow channel.

3. The piston cooling nozzle according to claim 2, characterized in that, It further includes a first sub-hole. The blocking member includes a helical spring and a moving member. The moving member is disposed on the first end of the helical spring, and the second end of the helical spring is fixed to the fixing member; The extending direction of the helical spring is consistent with the extending direction of the first through hole. The inner space of the helical spring forms the first communication flow channel, and a gap between the outer diameter of the helical spring and the inner wall of the first sub-hole forms the second communication flow channel; One end of the fixing member adjacent to the second part is provided with a through hole that communicates with the first through hole; when the valve core is in the first state, the first through hole communicates with the second part through the through hole; when the valve core is in the second state, the moving member blocks the communication portion between the through hole and the first through hole.

4. The piston cooling nozzle according to claim 3, characterized in that, A gap is formed between adjacent turns of the helical spring, and the first communication flow channel and the second communication flow channel communicate through the gap.

5. The piston cooling nozzle according to claim 3, characterized in that, The moving member is a sphere. The inner diameter of at least part of the through hole gradually increases along the flowing direction of the coolant. When the valve core is in the second state, the moving member abuts against the inner wall of the through hole with an increasing inner diameter.

6. The piston cooling nozzle according to claim 3, wherein It further includes a cover body, which is covered on one end of the first through hole adjacent to the first part. The second end of the helical spring is fixed on the cover body, and a first communication hole that communicates with the first communication flow channel is provided on the cover body.

7. The piston cooling nozzle according to claim 6, characterized in that, The first communication hole is provided on the central axis of the helical spring, and the inner diameter of the first communication hole is smaller than the outer diameter of the helical spring.

8. The piston cooling nozzle according to claim 7, characterized in that, A second communication hole that communicates with the second communication flow channel is provided on the cover body.

9. The piston cooling nozzle according to claim 8, characterized in that, The first communication hole and the second communication hole communicate.

10. The piston cooling nozzle according to claim 1, characterized in that, A second through hole is provided on one side of the first part away from the valve core, and the inner diameter of the second through hole is larger than the inner diameter of the first part.

11. The piston cooling nozzle according to claim 10, characterized in that, An annular positioning portion is provided on the valve body, and the annular positioning portion is suitable for installing a positioning piece.

12. The piston cooling nozzle according to claim 1, characterized in that, At least part of the peripheral wall of the valve body contracts inward to fix the valve core.

13. An engine, characterized in that, Comprising the piston cooling nozzle according to any one of claims 1-12.

14. A vehicle, characterized in that, Comprising the engine according to claim 13.

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