High-pressure oil pipe arrangement structure and power device
By setting a chamber in the cylinder head unit to enclose the high-pressure oil pipe and using a sealing structure and partitioning components to separate the chamber, the problem of fuel leakage and engine oil mixing of a single-layer high-pressure oil pipe is solved, achieving cost-effective improvement.
Patent Information
- Application Number
- CN202420416400.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-04
AI Technical Summary
There is fuel leakage in a single-layer high-pressure oil pipe, causing fuel to mix with engine oil, reducing the quality of the engine oil. The double-layer high-pressure oil pipe is costly and cannot meet the cost requirements.
Design a high-pressure oil pipe arrangement structure, by setting a first chamber in the cylinder head unit, the high-pressure oil pipe is surrounded, and the leaked fuel oil is placed in the chamber to avoid mixing with engine oil, and a sealing structure of the lower cover and the upper cover of the cylinder head is adopted. Separate the chamber with the partitioning component to ensure leakage fuel recovery.
It effectively solves the problem of fuel leakage in single-layer high-pressure oil pipes, ensures the quality of engine oil and engine reliability, and reduces the cost of the entire machine development.
Smart Images
Figure CN222184981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power devices, in particular to a high-pressure oil pipe arrangement structure and a power device. Background Art
[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.
[0003] At present, when developing new models, for engines with strict cost requirements, single-layer high-pressure oil pipes are used during development. However, single-layer high-pressure oil pipes will cause fuel leakage, resulting in fuel and oil mixing, thereby reducing the quality of the oil. The use of double-layer high-pressure oil pipes can solve the above fuel leakage problem, but double-layer high-pressure oil pipes have the problem of high cost. Utility Model Content
[0004] The purpose of the utility model is to at least solve the problem of fuel leakage in single-layer high-pressure oil pipes, which causes fuel and engine oil to mix, thereby reducing the quality of engine oil, and the high cost of double-layer high-pressure oil pipes. This purpose is achieved through the following technical solutions:
[0005] The first aspect of the utility model provides a high-pressure oil pipe arrangement structure, comprising:
[0006] Intake pipe;
[0007] A common rail pipe is arranged in the intake pipe and has a plurality of connection ports arranged at intervals;
[0008] A cylinder head assembly, comprising a plurality of cylinder head units, each of which is provided with a first chamber, and the plurality of cylinder head units are connected and communicated with the intake pipe;
[0009] A plurality of high-pressure oil pipes are disposed in the plurality of first chambers in a one-to-one correspondence and are communicated with the connecting port.
[0010] The high-pressure oil pipe arrangement structure of the utility model is provided with a first chamber in the cylinder head unit, and the high-pressure oil pipe is arranged in the first chamber, so that the first chamber surrounds the high-pressure oil pipe. Even if the high-pressure oil pipe leaks, the leaked fuel will be placed in the first chamber, and will not leak to the outside of the cylinder head unit and mix with the engine oil. Therefore, it can effectively solve the problem that the single-layer high-pressure oil pipe inside the cylinder head cover will have fuel leakage, resulting in the mixing of fuel and engine oil and the reduction of engine oil quality, thereby ensuring the quality of the engine oil and further ensuring the reliability of the engine, and at the same time can reduce the development cost of the whole machine.
[0011] In addition, the high-pressure oil pipe arrangement structure according to the utility model may also have the following additional technical features:
[0012] In some embodiments of the present invention, the cylinder head unit includes a cylinder head lower cover and a cylinder head upper cover, the cylinder head upper cover and the cylinder head lower cover enclose a chamber, the chamber has a partition, and the partition separates the chamber into the first chamber.
[0013] In some embodiments of the present invention, the partition includes a first partition, the cylinder head under cover includes a cylinder head under cover body, and the first partition is arranged in the cylinder head under cover body along the length direction of the cylinder head under cover body.
[0014] In some embodiments of the present invention, the partition further includes a second partition arranged corresponding to the first partition, the cylinder head upper cover includes a cylinder head upper cover body, and the second partition is arranged in the cylinder head upper cover body.
[0015] In some embodiments of the present invention, a sealing structure is provided at the connecting end surface between the cylinder head lower cover and the cylinder head upper cover.
[0016] In some embodiments of the present invention, the sealing structure includes a sealing member and a sealing groove cooperating with the sealing member, the sealing member is arranged on one of the cylinder head lower cover and the cylinder head upper cover, and the sealing groove is arranged on the other of the cylinder head lower cover and the cylinder head upper cover.
[0017] In some embodiments of the present invention, the partition further separates the chamber into a second chamber, a fuel injector is disposed in the second chamber, and the high-pressure oil pipe is connected to the fuel injector.
[0018] In some embodiments of the present invention, the first chamber is communicated with the intake pipe, the common rail pipe is arranged in the intake pipe, a plurality of limiting openings are arranged at intervals on the intake pipe, and the plurality of limiting openings are arranged in one-to-one correspondence with the plurality of connecting openings.
[0019] In some embodiments of the present invention, the high-pressure oil pipe arrangement structure further includes a delivery pipe, one end of which is connected to the air intake pipe, and the other end of which is used to communicate with an oil pump.
[0020] Another aspect of the present invention provides a power device, comprising a high-pressure oil pipe arrangement structure as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0022] Figure 1 The schematic diagram of the structure of the high-pressure oil pipe arrangement structure according to the embodiment of the utility model is schematically shown;
[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;
[0024] Figure 3 A cross-sectional view schematically shows a high-pressure oil pipe arrangement structure according to an embodiment of the utility model;
[0025] Figure 4 The schematic diagram of the structure of the cylinder head lower cover of the high-pressure oil pipe arrangement structure according to the embodiment of the utility model is schematically shown;
[0026] Figure 5 The structural diagram of the cylinder head upper cover of the high-pressure oil pipe arrangement structure according to the embodiment of the utility model is schematically shown.
[0027] The reference numerals are as follows:
[0028] 1. Intake pipe; 11. Limit opening;
[0029] 2. Common rail pipe;
[0030] 3. Cylinder head unit; 30. Cylinder head lower cover; 300. Cylinder head lower cover body; 301. First partition; 31. Cylinder head upper cover; 310. Cylinder head upper cover body; 311. Second partition; 32. First chamber; 33. Second chamber;
[0031] 4. High-pressure oil pipe;
[0032] 51. Sealing groove;
[0033] 6. Fuel injector;
[0034] 7. Delivery pipe. DETAILED DESCRIPTION
[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0036] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.
[0039] At present, when developing new models, for engines with strict cost requirements, single-layer high-pressure oil pipes are used for high-pressure oil pipes during development. However, single-layer high-pressure oil pipes may leak fuel, causing the fuel and oil to mix, thereby reducing the quality of the oil. Compared with single-layer high-pressure oil pipes, double-layer high-pressure oil pipes can solve the problem that single-layer high-pressure oil pipes inside the cylinder head cover may leak fuel, causing the fuel and oil to mix, thereby reducing the quality of the oil. However, double-layer high-pressure oil pipes are expensive and cannot meet cost requirements.
[0040] In view of this, the present embodiment provides a high-pressure oil pipe arrangement structure, which aims to solve the above-mentioned technical problems by providing a first chamber in the cylinder head unit, in which the high-pressure oil pipe is arranged, so that the first chamber surrounds the high-pressure oil pipe, thereby preventing the fuel leaked from the high-pressure oil pipe from mixing with the engine oil.
[0041] like Figures 1 to 5 As shown, according to an embodiment of the utility model, a high-pressure oil pipe arrangement structure is proposed, including an intake pipe 1, a common rail pipe 2, a cylinder head assembly and a plurality of high-pressure oil pipes 4, the common rail pipe 2 is arranged in the intake pipe 1, and a plurality of connecting ports are arranged at intervals on the common rail pipe 2, the cylinder head assembly includes a plurality of cylinder head units 3, each of the cylinder head units 3 is provided with a first chamber 32, the plurality of cylinder head units 3 are connected and communicated with the intake pipe 1, and the plurality of high-pressure oil pipes 4 are arranged in a one-to-one correspondence in the plurality of first chambers 32, and are communicated with the connecting ports.
[0042] The high-pressure oil pipe arrangement structure of the utility model is provided with a first chamber 32 in the cylinder head unit 3, and the single-layer high-pressure oil pipe 4 is arranged in the first chamber 32, so that the first chamber 32 surrounds the high-pressure oil pipe 4. Even if the high-pressure oil pipe 4 leaks, the leaked fuel will be placed in the first chamber 32, and will not leak to the outside of the cylinder head unit 3 and mix with the engine oil. Therefore, it can effectively solve the problem of fuel leakage in the single-layer high-pressure oil pipe inside the cylinder head cover, which causes the fuel and the engine oil to mix and reduce the quality of the engine oil, thereby ensuring the quality of the engine oil and further ensuring the reliability of the engine. At the same time, the single-layer high-pressure oil pipe can reduce the development cost of the whole machine.
[0043] In some embodiments of the present invention, the cylinder head unit 3 includes a cylinder head lower cover 30 and a cylinder head upper cover 31. The cylinder head upper cover 31 and the cylinder head lower cover 30 enclose a chamber, and a partition is provided in the chamber, and the partition partitions the chamber into a first chamber 32. Specifically, the partition includes a first partition 301 and a second partition 311. The cylinder head lower cover 30 includes a cylinder head lower cover body 300. The first partition 301 is arranged in the cylinder head lower cover body 300 along the length direction of the cylinder head lower cover body 300. The cylinder head upper cover 31 includes a cylinder head upper cover body 310. The second partition 311 and the first partition 301 are arranged in the cylinder head upper cover body 310 corresponding to the first partition 301. The first partition 301 and the second partition 311 separate the cylinder head upper cover 31 and the cylinder head lower cover 30 into a first chamber 32. The cylinder head lower cover 30 body is provided with a mounting hole, and the high-pressure oil pipe 4 is provided along the length direction of the first chamber 32, which direction is consistent with the length direction of the cylinder head lower cover body 300. The high-pressure oil pipe 4 is connected to the connecting port on the common rail pipe 2 through the mounting hole, so that the high-pressure oil pipe 4 is connected to the common rail pipe 2. A plurality of first bolt holes are provided at intervals on the cylinder head lower cover body 300, and a plurality of second bolt holes corresponding to the first bolt holes are provided on the cylinder head upper cover body 310. By providing the first bolt holes and the second bolt holes, the cylinder head upper cover 31 can be detachably connected with the cylinder head lower cover 30 by bolts, so that the disassembly and assembly of the cylinder head lower cover 30 and the cylinder head upper cover 31 are convenient.
[0044] In some embodiments of the utility model, a sealing structure is provided at the connecting end surface of the cylinder head lower cover 30 and the cylinder head upper cover 31. Specifically, the sealing structure includes a sealing member and a sealing groove 51 matched with the sealing member, the sealing member is provided on one of the cylinder head lower cover 30 and the cylinder head upper cover 31, and the sealing groove 51 is provided on the other of the cylinder head lower cover 30 and the cylinder head upper cover 31. In this embodiment, the sealing member includes a sealing strip, the sealing strip is provided on the cylinder head lower cover 30, and correspondingly, the cylinder head upper cover 31 is provided with a sealing groove 51 corresponding to the sealing strip. When the cylinder head upper cover 31 and the cylinder head lower cover 30 are installed, the cylinder head upper cover 31 is buckled on the cylinder head lower cover 30, the sealing strip is aligned with the sealing groove 51, and then the bolts are screwed into the first bolt hole and the second bolt hole in sequence, and the sealing structure is used to seal the gap between the cylinder head lower cover 30 and the cylinder head upper cover 31, improve the sealing performance of the cylinder head unit 3, and thus prevent the fuel in the high-pressure oil pipe 4 from leaking to the outside of the cylinder head unit 3.
[0045] In other embodiments, the sealing member may also be disposed on the cylinder head upper cover 31 , and the sealing groove 51 may also be disposed on the cylinder head lower cover 30 .
[0046] In some embodiments of the utility model, the partition also separates the chamber into a second chamber 33, and the second chamber 33 is provided with an injector 6, and the high-pressure oil pipe 4 is connected to the injector 6. Specifically, the first partition 301 and the second partition 311 also separate the chamber enclosed by the cylinder head upper cover 31 and the cylinder head lower cover 30 into a second chamber 33, and the injector 6 is arranged in the second chamber 33. A connecting hole is provided on the first partition 301, and one end of the high-pressure oil pipe 4 passes through the connecting hole to connect with the injector 6. A sealing ring and other structures are provided at the connection between the high-pressure oil pipe 4 and the connecting hole for sealing, so as to prevent the fuel from leaking through the connection gap of the connecting hole when the high-pressure oil pipe 4 leaks, thereby further improving the sealing performance of the first chamber 32.
[0047] In some embodiments of the utility model, the first chamber 32 is communicated with the intake pipe 1, and a plurality of limiting openings 11 are arranged at intervals on the intake pipe 1, and the plurality of limiting openings 11 are arranged one-to-one with the plurality of connecting openings. Specifically, the intake pipe 1 is sleeved on the outside of the common rail pipe 2, and the limiting openings 11 are arranged correspondingly with the connecting openings, the cylinder head unit 3 is connected and communicated with the intake pipe 1 through the limiting openings 11, and there is a gap between the outer wall of the common rail pipe 2 and the inner wall of the intake pipe 1, and the first chamber 32 is communicated with the gap. If the high-pressure oil pipe 4 leaks during use, the leaked fuel is placed in the first chamber 32, and then flows into the gap between the common rail pipe 2 and the intake pipe 1 through the mounting holes opened on the side wall of the cylinder head lower cover 30.
[0048] In some embodiments of the utility model, a delivery pipe 7 is further included, one end of which is used to communicate with the intake pipe 1, and the other end of which is used to communicate with the fuel pump. Specifically, the leaked fuel flows into the gap between the common rail pipe 2 and the intake pipe 1, and finally flows back to the fuel pump through the delivery pipe 7, thereby achieving the effect of recovering the fuel.
[0049] The second aspect of the utility model proposes a power device, including a high-pressure oil pipe arrangement structure as described above. In the present embodiment, the power device is an engine, and the engine also includes other structures and components that existing engines have, such as an exhaust pipe and a water outlet pipe. Since the present embodiment does not involve these structures and components, they are not described in detail. The power device of the present embodiment includes a high-pressure oil pipe arrangement structure, by providing a first chamber 32 in the cylinder head unit 3, and the high-pressure oil pipe 4 is provided in the first chamber 32, so that the first chamber 32 surrounds the high-pressure oil pipe 4. Even if the high-pressure oil pipe 4 causes a leak, the leaked fuel will be placed in the first chamber 32, and will not leak to the outside of the cylinder head unit 3 and mix with the engine oil, thereby ensuring the quality of the engine oil, and then ensuring the reliability of the engine, while reducing the development cost of the whole machine.
[0050] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A high-pressure oil pipe arrangement structure, characterized in that: include: Intake pipe; A common rail pipe is arranged in the intake pipe and has a plurality of connection ports arranged at intervals; A cylinder head assembly, comprising a plurality of cylinder head units, each of which is provided with a first chamber, and the plurality of cylinder head units are connected and communicated with the intake pipe; A plurality of high-pressure oil pipes are disposed in the plurality of first chambers in a one-to-one correspondence and are communicated with the connecting port.
2. The high-pressure oil pipe arrangement structure according to claim 1, characterized in that: The cylinder head unit comprises a cylinder head lower cover and a cylinder head upper cover, wherein the cylinder head upper cover and the cylinder head lower cover enclose a chamber, wherein a partition is provided in the chamber, and the partition partitions the chamber into the first chamber.
3. The high-pressure oil pipe arrangement structure according to claim 2, characterized in that: The partition includes a first partition, the cylinder head lower cover includes a cylinder head lower cover body, and the first partition is arranged in the cylinder head lower cover body along a length direction of the cylinder head lower cover body.
4. The high-pressure oil pipe arrangement structure according to claim 3, characterized in that: The partition further includes a second partition arranged corresponding to the first partition, the cylinder head upper cover includes a cylinder head upper cover body, and the second partition is arranged in the cylinder head upper cover body.
5. The high-pressure oil pipe arrangement structure according to claim 2, characterized in that: A sealing structure is provided at the connecting end surface of the cylinder head lower cover and the cylinder head upper cover.
6. The high-pressure oil pipe arrangement structure according to claim 5, characterized in that: The sealing structure includes a sealing member and a sealing groove matched with the sealing member, wherein the sealing member is arranged on one of the cylinder head lower cover and the cylinder head upper cover, and the sealing groove is arranged on the other of the cylinder head lower cover and the cylinder head upper cover.
7. The high-pressure oil pipe arrangement structure according to claim 2, characterized in that: The partition also separates the chamber into a second chamber, a fuel injector is disposed in the second chamber, and the high-pressure oil pipe is connected to the fuel injector.
8. The high-pressure oil pipe arrangement structure according to claim 1, characterized in that: The first chamber is communicated with the air inlet pipe, and a plurality of limiting openings are arranged at intervals on the air inlet pipe, and the plurality of limiting openings are arranged in a one-to-one correspondence with the plurality of connecting openings.
9. The high-pressure oil pipe arrangement structure according to claim 8, characterized in that: The high-pressure oil pipe arrangement structure also includes a delivery pipe, one end of which is connected to the air intake pipe, and the other end of which is used to communicate with an oil pump.
10. A power device, characterized in that: The invention comprises a high-pressure oil pipe arrangement structure as claimed in any one of claims 1 to 9.