Piston nozzle assembly and engine with same

Abstract

The utility model provides a piston nozzle assembly and an engine with the same. The piston nozzle assembly comprises a shell, the shell is provided with a liquid passing channel and a mounting hole which are communicated with each other, one end of the liquid passing channel is a liquid inlet end, and the other end of the liquid passing channel is a liquid outlet end; the valve assembly is arranged in the mounting hole and used for controlling the on-off state of the liquid passing channel; the nozzle is arranged at the liquid outlet end; an included angle A is formed between the flowing direction of liquid in the liquid passing channel and the extending direction of the mounting hole, and the included angle A is smaller than 90 degrees. According to the utility model, the problem that the normal operation of an engine is affected due to clamping stagnation in the cold oil cavity in the piston in the prior art is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and more specifically, to a piston nozzle assembly and an engine having the same. Background Art

[0002] At present, with the development of engine technology, higher requirements are put forward for engine fuel consumption. Among them, one of the ways to optimize fuel consumption is to increase the explosion pressure to optimize combustion, reduce fuel consumption, and improve engine economy. Specifically, increasing the explosion pressure puts higher requirements on the piston strength. Aluminum pistons can no longer meet the requirements of the increasing explosion pressure, and major diesel engine factories generally begin to use steel pistons, and the heat dissipation of steel pistons depends on the cooling of the internal oil cavity of the piston.

[0003] However, in the prior art, jamming faults are prone to occur in the internal oil cavity of the piston, which in turn leads to insufficient oil being sprayed onto the bottom of the piston, and finally faults such as cylinder liner scoring and piston pin biting occur. Summary of the Utility Model

[0004] The main object of the present utility model is to provide a piston nozzle assembly and an engine having the same, so as to solve the problem that jamming easily occurs in the internal oil cavity of the piston in the prior art, which affects the normal operation of the engine.

[0005] To achieve the above object, according to one aspect of the present utility model, a piston nozzle assembly is provided, including: a housing having a liquid passing channel and a mounting hole communicating with each other, one end of the liquid passing channel being the liquid inlet end, and the other end of the liquid passing channel being the liquid outlet end; a valve assembly disposed in the mounting hole for controlling the on-off state of the liquid passing channel; a nozzle disposed on the liquid outlet end; wherein, the flowing direction of the liquid in the liquid passing channel is set at an angle A with the extending direction of the mounting hole, and the angle A is less than 90°.

[0006] Further, the mounting hole communicates with the middle part of the liquid passing channel.

[0007] Further, the housing has a mounting channel, and the inner surface of the mounting channel forms the mounting hole; the first end of the mounting channel communicates with the liquid passing channel; the piston nozzle assembly further includes: a plugging structure disposed on the second end of the mounting channel for plugging the second end.

[0008] Further, the connection between the first end of the mounting channel and the liquid passing channel is in smooth transition.

[0009] Further, a mounting flange is provided on the outer surface of the housing, and the mounting flange is used for connecting with the cylinder block of the engine; wherein, along the flowing direction of the liquid in the liquid passing channel, the first end of the mounting channel is located between the mounting flange and the liquid outlet end.

[0010] Further, there is one liquid outlet; or, there are multiple liquid outlets, and the multiple liquid outlets are arranged at intervals along the flow direction of the liquid in the liquid passage.

[0011] Furthermore, the valve assembly includes: a plunger, which is slidably arranged in the mounting hole, and has a blocking state in which the plunger extends into the liquid passage to block the liquid passage and a evasive state in which the plunger withdraws from the liquid passage; and an elastic structure, which is arranged in the mounting hole and is used to apply an elastic force to the plunger to move toward one side of the liquid passage.

[0012] Furthermore, the elastic structure is a spring, and the plunger includes: a first shaft segment; a second shaft segment, the second shaft segment is arranged on one end of the first shaft segment and forms a step surface at the connection with the first shaft segment, and the second shaft segment extends into the spring so that the spring and the step surface are limitedly matched; wherein the end surface of the other end of the first shaft segment is a spherical surface, and when at least part of the surface of the spherical surface contacts the inner wall of the liquid passage, the plunger is in a blocked state.

[0013] Furthermore, the piston nozzle assembly also includes: a sealing structure, which is arranged at the connection between the second end of the installation channel and the blocking structure.

[0014] According to another aspect of the utility model, an engine is provided, comprising a cylinder, a piston and a piston nozzle assembly, wherein the piston is slidably connected to the cylinder, and the piston nozzle assembly is connected to the cylinder for spraying oil to the piston; wherein the piston nozzle assembly is the above-mentioned piston nozzle assembly.

[0015] Applying the technical solution of the utility model, the piston nozzle assembly includes a housing, a valve assembly and a nozzle. The housing has a liquid passage and a mounting hole that are interconnected. One end of the liquid passage is a liquid inlet end, and the other end of the liquid passage is a liquid outlet end. The valve assembly is arranged in the mounting hole to control the on-off state of the liquid passage. The nozzle is arranged on the liquid outlet end. In this way, the flow direction of the liquid in the liquid passage is set at an angle A with the extension direction of the mounting hole, and the angle A is less than 90°. On the one hand, the above arrangement realizes the top arrangement of the nozzle to ensure smooth and unbending flow in the liquid passage, thereby avoiding the occurrence of jamming. On the other hand, even if a small amount of impurities enter the liquid passage, they can also enter the mounting hole with the oil. In the process of the valve assembly controlling the on-off state of the liquid passage, the impurities can enter the mounting hole to be discharged through the mounting hole, thereby solving the problem of jamming in the cold oil chamber in the piston in the prior art, which affects the normal operation of the engine, and reduces the risk of jamming. Brief Description of the Figures

[0016] The drawings constituting part of this application are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation on the utility model. In the drawings:

[0017] Figure 1 The sectional view when the valve assembly of an embodiment of the piston nozzle assembly according to the present utility model is in a blocked state is shown;

[0018] Figure 2 Shown is Figure 1 the sectional view when the valve assembly of the piston nozzle assembly in

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 10. Housing; 11. Liquid passing channel; 111. Liquid inlet end; 112. Liquid outlet end; 12. Mounting hole;

[0021] 20. Valve assembly; 21. Plunger; 211. First shaft section; 212. Second shaft section; 213. Spherical surface; 22. Elastic structure;

[0022] 30. Nozzle;

[0023] 40. Blocking structure;

[0024] 50. Mounting flange. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0027] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0028] In order to solve the problem that the piston internal cooling oil cavity in the prior art is prone to jamming and affect the normal operation of the engine, the present application provides a piston nozzle assembly and an engine having the same.

[0029] As Figure 1 and Figure 2As shown, the piston nozzle assembly includes a housing 10, a valve assembly 20, and a nozzle 30. The housing 10 has a liquid passage 11 and a mounting hole 12 that communicate with each other. One end of the liquid passage 11 is the liquid inlet end 111, and the other end of the liquid passage 11 is the liquid outlet end 112. The valve assembly 20 is disposed in the mounting hole 12 to control the on-off state of the liquid passage 11. The nozzle 30 is disposed on the liquid outlet end 112. Among them, the flow direction of the liquid in the liquid passage 11 is set at an angle A with the extending direction of the mounting hole 12, and the angle A is less than 90°.

[0030] Applying the technical solution of this embodiment, the flow direction of the liquid in the liquid passage 11 is set at an angle A with the extending direction of the mounting hole 12, and the angle A is less than 90°. The above setting, on the one hand, realizes the top-mounted arrangement of the nozzle 30 to ensure smooth and non-bent in the liquid passage 11, thereby avoiding jamming; on the other hand, even if a small amount of impurities enter the liquid passage 11, they can enter the mounting hole 12 along with the oil. During the process of the valve assembly 20 controlling the on-off state of the liquid passage 11, the above impurities can enter the mounting hole 12 and be discharged through the mounting hole 12, thus solving the problem that jamming easily occurs in the piston internal cooling oil cavity in the prior art and affecting the normal operation of the engine, and reducing the risk of jamming.

[0031] In this embodiment, the valve assembly 20 is side-mounted as a whole and the nozzle 30 is top-mounted, thereby optimizing the internal pipeline of the piston nozzle assembly, reducing the risk of jamming, and ensuring the operation reliability of the engine.

[0032] In this embodiment, the valve assembly 20 is a pressure-limiting valve.

[0033] In this embodiment, the mounting hole 12 communicates with the middle part of the liquid passage 11. In this way, the above setting further ensures the top-mounted arrangement of the nozzle 30 to improve the flow smoothness of the oil in the piston nozzle assembly, and also makes the pipeline layout in the housing 10 more compact, improving the oil injection smoothness of the piston nozzle assembly.

[0034] As Figure 1 and Figure 2 shown, the housing 10 has a mounting channel, and the inner surface of the mounting channel forms the mounting hole 12; the first end of the mounting channel communicates with the liquid passage 11. The piston nozzle assembly further includes a plugging structure 40. Among them, the plugging structure 40 is disposed on the second end of the mounting channel to plug the second end. In this way, the above setting, on the one hand, makes it easier and simpler to form the mounting hole 12, reducing the processing cost and difficulty of the housing 10; on the other hand, when the valve assembly 20 fails or needs to be replaced, the staff can operate on the valve assembly 20 by removing the plugging structure 40, further reducing the labor intensity of the staff.

[0035] Specifically, when a small amount of impurities enter the installation hole 12, the staff can remove the plugging structure 40 from the second end to clear the impurities, thereby avoiding jamming in the liquid passage 11 and affecting the normal use of the piston.

[0036] In this embodiment, the connection between the first end of the installation passage and the liquid passage 11 has a smooth transition. In this way, the above setting avoids the occurrence of eddy currents or turbulent flows at the connection between the installation hole 12 and the liquid passage 11, which affects the normal flow of the oil, and also avoids the generation of vibration and noise, improving the user experience.

[0037] As Figure 1 and Figure 2 As shown, an installation flange 50 is provided on the outer surface of the housing 10, and the installation flange 50 is used to connect with the cylinder block of the engine. Among them, along the flow direction of the liquid in the liquid passage 11, the first end of the installation passage is located between the installation flange 50 and the liquid outlet end 112. In this way, the above setting makes the disassembly and assembly of the piston nozzle assembly and the cylinder block easier and simpler, reducing the disassembly and assembly difficulty between the two. At the same time, the above setting makes the position of the installation flange 50 on the housing 10 more reasonable, improving the structural strength of the housing 10 and extending the service life of the housing 10.

[0038] Optionally, the liquid outlet end 112 is one; or, the liquid outlet end 112 is multiple, and the multiple liquid outlet ends 112 are arranged at intervals along the flow direction of the liquid in the liquid passage 11. In this way, the above setting makes the selection of the number of the liquid outlet ends 112 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0039] In this embodiment, the liquid outlet end 112 is one, and the nozzle 30 is one.

[0040] It should be noted that the number of the liquid outlet ends 112 is not limited and can be adjusted according to the working conditions and usage requirements. Optionally, the liquid outlet end 112 is two, or three, or four, or multiple.

[0041] As Figure 1 and Figure 2 As shown, the valve assembly 20 includes a plunger 21 and an elastic structure 22. Among them, the plunger 21 is slidably arranged in the installation hole 12, and the plunger 21 has a plugging state of extending into the liquid passage 11 to block the liquid passage 11 and an avoidance state of withdrawing from the liquid passage 11. The elastic structure 22 is arranged in the installation hole 12 to apply an elastic force to the plunger 21 to move toward the liquid passage 11. In this way, the above setting makes the structure of the valve assembly 20 simpler, easier to process and implement, reducing the processing cost and difficulty of the piston nozzle assembly.

[0042] As Figure 1 and Figure 2As shown, the elastic structure 22 is a spring, and the plunger 21 includes a first shaft section 211 and a second shaft section 212. The second shaft section 212 is disposed at one end of the first shaft section 211, and a stepped surface is formed at the connection between the second shaft section 212 and the first shaft section 211. The second shaft section 212 extends into the spring so that the spring is in limiting fit with the stepped surface. Among them, the end surface of the other end of the first shaft section 211 is a spherical surface 213. When at least part of the surface of the spherical surface 213 contacts the inner wall of the liquid passing channel 11, the plunger 21 is in a blocked state. In this way, the above setting of the elastic structure 22 reduces its processing cost and processing difficulty. At the same time, the above setting of the spherical surface 213 can further reduce the risk of impurity jamming.

[0043] In this embodiment, the first shaft section 211 and the second shaft section 212 are coaxially arranged.

[0044] Optionally, the piston nozzle assembly further includes a sealing structure. Among them, the sealing structure is arranged at the connection between the second end of the installation channel and the blocking structure 40. In this way, when the blocking structure 40 blocks the second end, the above setting of the sealing structure improves the sealing performance between the installation channel and the blocking structure 40 and avoids oil leakage.

[0045] The present application also provides an engine (not shown), including a cylinder block, a piston, and a piston nozzle assembly. The piston is slidably connected to the cylinder block, and the piston nozzle assembly is connected to the cylinder block for injecting oil into the piston. Among them, the piston nozzle assembly is the above-mentioned piston nozzle assembly.

[0046] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0047] The piston nozzle assembly includes a housing, a valve assembly, and a nozzle. The housing has a liquid passing channel and an installation hole that communicate with each other. One end of the liquid passing channel is the liquid inlet end, and the other end of the liquid passing channel is the liquid outlet end. The valve assembly is arranged in the installation hole to control the on-off state of the liquid passing channel. The nozzle is arranged at the liquid outlet end. In this way, the flowing direction of the liquid in the liquid passing channel is set at an angle A with the extending direction of the installation hole, and the angle A is less than 90°. The above setting, on the one hand, realizes the top-mounted arrangement of the nozzle to ensure smooth and non-bent in the liquid passing channel, thereby avoiding jamming phenomena; on the other hand, even if a small amount of impurities enter the liquid passing channel, they can enter the installation hole along with the oil. During the process of the valve assembly controlling the on-off state of the liquid passing channel, the above impurities can enter the installation hole and be discharged through the installation hole, thereby solving the problem that jamming easily occurs in the piston internal cooling oil cavity in the prior art and affecting the normal operation of the engine, and reducing the risk of jamming.

[0048] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A piston nozzle assembly, characterized in that: include: The housing (10) has a liquid passage (11) and a mounting hole (12) which are interconnected, one end of the liquid passage (11) being a liquid inlet end (111), and the other end of the liquid passage (11) being a liquid outlet end (112); a valve assembly (20), the valve assembly (20) being arranged in the mounting hole (12) and being used for controlling the on / off state of the liquid passage (11); A nozzle (30) is arranged on the liquid outlet end (112); The flow direction of the liquid in the liquid passage (11) and the extension direction of the mounting hole (12) are arranged at an angle A, and the angle A is less than 90°.

2. The piston nozzle assembly according to claim 1, characterized in that: The mounting hole (12) is in communication with the middle portion of the liquid passage (11).

3. The piston nozzle assembly according to claim 1, characterized in that: The housing (10) has a mounting channel, the inner surface of which forms the mounting hole (12); the first end of the mounting channel is in communication with the liquid passage (11); the piston nozzle assembly further comprises: A blocking structure (40) is arranged on the second end of the installation channel to block the second end.

4. The piston nozzle assembly according to claim 3, characterized in that: The first end of the installation channel and the connecting point of the liquid passage (11) are smoothly transitioned.

5. The piston nozzle assembly according to claim 3, characterized in that: A mounting flange (50) is provided on the outer surface of the housing (10), and the mounting flange (50) is used to be connected to a cylinder block of an engine; wherein, along the flow direction of the liquid in the liquid passage (11), the first end of the mounting passage is located between the mounting flange (50) and the liquid outlet end (112).

6. The piston nozzle assembly according to claim 1, characterized in that: The liquid outlet (112) is one; or, There are a plurality of liquid outlet ends (112), and the plurality of liquid outlet ends (112) are arranged at intervals along the flow direction of the liquid in the liquid passage (11).

7. The piston nozzle assembly according to claim 1, characterized in that The valve assembly (20) comprises: A plunger (21) is slidably disposed in the mounting hole (12), the plunger (21) having a blocking state in which it extends into the liquid passage (11) to block the liquid passage (11) and a evasive state in which it withdraws from the liquid passage (11); An elastic structure (22) is arranged in the mounting hole (12) and is used to apply an elastic force to the plunger (21) to move toward one side of the liquid passage (11).

8. The piston nozzle assembly according to claim 7, characterized in that The elastic structure (22) is a spring, and the plunger (21) comprises: A first shaft section (211); a second shaft segment (212), the second shaft segment (212) being arranged on one end of the first shaft segment (211) and forming a step surface at a connection with the first shaft segment (211), the second shaft segment (212) extending into the spring so that the spring is limitedly matched with the step surface; The end surface of the other end of the first shaft segment (211) is a spherical surface (213), and when at least a portion of the surface of the spherical surface (213) contacts the inner wall of the liquid passage (11), the plunger (21) is in the blocking state.

9. The piston nozzle assembly according to claim 3, characterized in that: The piston nozzle assembly also includes: A sealing structure is arranged at the connection between the second end of the installation channel and the blocking structure (40).

10. An engine, characterized in that: It comprises a cylinder body, a piston and a piston nozzle assembly, wherein the piston is slidably connected to the cylinder body, and the piston nozzle assembly is connected to the cylinder body for spraying oil to the piston; wherein the piston nozzle assembly is the piston nozzle assembly described in any one of claims 1 to 9.

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