Engine oil rail, methanol engine assembly and vehicle

Abstract

The utility model discloses an engine oil rail, a methanol engine assembly and a vehicle, and relates to the technical field of engines, the engine oil rail is used for being installed on an intake manifold, the engine oil rail comprises a shell cover and an oil sprayer assembly, the shell cover comprises a main body part and a cover body which are detachably connected, an accommodating cavity with an opening in one side is formed in the main body part, and the cover body covers the opening of the accommodating cavity; the fuel injector assembly comprises an inner rail pipe structure and a fuel injector, the inner rail pipe structure is fixed in the containing cavity, the fuel injector is arranged in the inner rail pipe structure, at least part of the fuel injector is located in the containing cavity, and the fuel injector can communicate with the inner rail pipe structure and the intake manifold. The oil sprayer assembly can be disassembled from the opening or assembled into the containing cavity. According to the technical scheme provided by the utility model, the engine oil rail can be conveniently processed, and the later maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially relates to an engine oil rail, a methanol engine assembly and a vehicle. BACKGROUND

[0002] The engine oil rail usually comprises a common rail pipe and an oil injector arranged on the common rail pipe, and high-pressure liquid fuel is introduced into the common rail pipe from the oil inlet pipe and then sprayed into the engine through the oil injector. In order to prevent the use of the fuel supply system from being unsafe, the common rail pipe can be designed in a double-layer structure.

[0003] That is, the common rail pipe has an inner layer and an outer layer, the inner layer rail is used for accumulating fuel, the outer layer rail is wrapped around the outer periphery of the inner layer rail, the oil injector is communicated with the inner layer rail through the outer layer rail, and the shapes of the inner layer rail and the outer layer rail are substantially the same, and the gap between the inner layer rail and the outer layer rail is substantially equal, so that the manufacturing and processing difficulty of the common rail pipe is increased, and it is difficult to disassemble, maintain and repair the common rail pipe after assembly, so that the processing and replacement cost of the engine oil rail is high. SUMMARY

[0004] The main purpose of the utility model is to provide an engine oil rail, a methanol engine assembly and a vehicle, which aims to facilitate the processing of the engine oil rail and reduce the maintenance cost in the later period.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an engine oil rail, which comprises:

[0006] A shell cover comprising a main body part and a cover body which are detachably connected, a containing cavity with one side opening is arranged in the main body part, and the cover body covers the opening of the containing cavity; and

[0007] An oil injector assembly comprising an inner rail pipe structure and an oil injector, the inner rail pipe structure is fixed in the containing cavity, the oil injector is arranged on the inner rail pipe structure, at least part of the oil injector is located in the containing cavity, the oil injector can be respectively communicated with the inner rail pipe structure and the intake manifold, and the oil injector assembly can be taken out of or put into the containing cavity through the opening.

[0008] In an embodiment, the main body part is provided with a avoiding hole, the inner rail pipe structure is provided with a mounting leg, and the mounting leg passes through the avoiding hole and is detachably mounted on the intake manifold.

[0009] In an embodiment, the periphery of the avoiding hole is used for sealing and fixing on the intake manifold, and one end of the oil injector away from the inner rail pipe structure extends out of the avoiding hole and is used for being connected to a nozzle mounting hole of the intake manifold.

[0010] In an embodiment, the air intake manifold is provided with a sealing seat, and the sealing seat is provided with the nozzle mounting hole, and the circumferential edge of the avoiding hole abuts against the sealing seat.

[0011] The circumferential edge of the avoiding hole is fastened to the sealing seat by a first fastener, and / or a first sealing ring is arranged between the circumferential edge of the avoiding hole and the sealing seat.

[0012] In an embodiment, the circumferential edge of the opening of the accommodating cavity is provided with a mounting flange, and the circumferential edge of the cover body is fastened to the mounting flange by a second fastener, and / or a second sealing ring is arranged between the circumferential edge of the cover body and the mounting flange.

[0013] In an embodiment, the fuel injector assembly further comprises a wire harness assembly, the shell cover is further provided with a wire harness sealing structure, one end of the wire harness assembly extends into the accommodating cavity to be electrically connected to the fuel injector, and the wire harness sealing structure is sealingly connected to the wire harness assembly.

[0014] In an embodiment, the fuel injector assembly further comprises an oil inlet joint and an oil return joint arranged in the inner rail pipe structure, and the oil inlet joint and the oil return joint are arranged in the accommodating cavity.

[0015] In an embodiment, the inner rail pipe structure comprises a first inner rail pipe, a second inner rail pipe, and a communication pipe communicating the first inner rail pipe and the second inner rail pipe, the oil inlet joint is arranged in the first inner rail pipe, the oil return joint is arranged in the second inner rail pipe, and the first inner rail pipe and the second inner rail pipe are both provided with the fuel injector.

[0016] In an embodiment, the shell cover is further provided with an air inlet joint and an air return joint, and the air inlet joint and the air return joint are both communicated with the accommodating cavity.

[0017] In an embodiment, the fuel injector assembly further comprises an oil inlet pipe and an oil return pipe, the oil inlet pipe is arranged in the air inlet joint to be connected to the oil inlet joint, and the oil return pipe is arranged in the air return joint to be connected to the oil return joint.

[0018] The utility model also proposes a methanol engine assembly, including the engine oil track as described above.

[0019] The utility model also proposes a vehicle, including the methanol engine assembly as described above.

[0020] The technical solution of this utility model involves setting up a housing, which includes a detachably connected main body and a cover. The main body has a receiving cavity with an opening on one side, and the cover closes the opening of the receiving cavity. The injector assembly includes an inner rail structure and an injector. The inner rail structure is fixed inside the receiving cavity, meaning the housing covers the outer periphery of the inner rail structure, and the injector is located on the inner rail structure. Therefore, the injector can be installed into the receiving cavity along with the inner rail structure. The injector is connected to both the inner rail structure and the intake manifold, so the injector is at least partially located in the receiving cavity. The injector assembly can be removed from the receiving cavity through the opening, meaning the inner rail structure is detachable from the housing. This allows the inner rail structure to be disassembled separately for repair or replacement when it malfunctions, facilitating future maintenance of the engine fuel rail. In actual manufacturing, operators can also assemble the injector assembly first, such as installing the injector on the inner rail structure first, and then installing the entire injector assembly into the receiving cavity. In other embodiments, the inner rail structure can be installed in the receiving cavity first, and then the injector assembly structure can be assembled through the opening of the receiving cavity, thereby facilitating the processing of the engine oil rail and reducing the production cycle and production cost. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of the engine oil rail in the prior art;

[0023] Figure 2 A schematic diagram of an angle structure of an embodiment of the engine oil rail provided by this utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of the internal structure of the engine oil rail;

[0025] Figure 4 for Figure 2 A schematic diagram of the engine oil rail from another angle.

[0026] Explanation of icon numbers:

[0027] 1, oil rail; 11, shell cover; 111, main body; 112, cover body; 113, accommodating cavity; 1131, opening; 114, avoiding hole; 115, mounting flange; 116, wire harness sealing structure; 117, air inlet joint; 118, air return joint; 12, fuel injector assembly; 13, inner rail pipe structure; 131, mounting leg; 132, oil inlet joint; 133, oil return joint; 134, first inner rail pipe; 135, second inner rail pipe; 136, communication pipe; 14, fuel injector; 15, first fastener; 16, second fastener; 2, oil rail; 21, outer layer rail; 22, inner layer rail; 23, fuel injector.

[0028] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0032] The utility model provides a kind of engine oil rail 1 (abbreviation oil rail 1), for engine assembly, this engine assembly includes engine, intake manifold and engine, fuel is sucked from fuel tank by fuel pump, passes through fuel filter, then reaches oil rail 1 by fuel pipeline.Oil rail 1 further distributes fuel to each oil atomizer 14, fuel is injected to intake manifold by oil atomizer 14, and mixes with air at intake valve, finally by intake valve into engine cylinder. Among them, the engine assembly is configured as methanol engine assembly, its working principle is similar to traditional engine, and the methanol engine mainly uses methanol as main fuel, methanol as clean energy, compared with traditional engine, not only economic, low-carbon environmental protection, also reduce carbon dioxide emissions, methanol engine is gradually market-oriented.

[0033] In order to ensure the safe use of fuel supply, oil rail 2 is usually double-layer structure, see Figure 1 , Figure 1 The oil rail 2 cross section structure in prior art is that the outer rail 21 is covered on the outer periphery of the inner rail 22, one end of the oil atomizer 23 is inserted into the outer rail 21 and communicated with the inner rail 22, and the shape of the inner rail 22 and the outer rail 21 is substantially the same, the gap between the inner rail 22 and the outer rail 21 is also substantially equal, and the two are fixed by end cap welding, so that the inner rail 22 and the outer rail 21 are in an integrated structure. But this kind of oil rail 2 can meet the safety protection requirements in structure, but compared with the traditional single-layer oil rail, the manufacturing difficulty of this kind of oil rail 2 is relatively large, and the manufacturing cycle is relatively long. For example, in actual manufacturing, since the inner rail 22 and the outer rail 21 are in an integrated structure, it is difficult for the operator to stretch tools or hands into the inner rail 22 and the outer rail 21 under the premise of ensuring the sealing effect of the outer rail 21, so that the connection of the oil atomizer 23 and the inner rail 22 is difficult. And the inner rail 22 and the outer rail 21 are in an integrated structure, and the inner rail 22 and the outer rail 21 cannot be replaced separately, so that the maintenance cost of the oil rail 2 in later period is relatively high.

[0034] Therefore, in an embodiment of the utility model, please refer to Figures 2 to 4 The engine oil rail 1 comprises:

[0035] The shell cover 11 comprises a main body part 111 and a cover body 112 which can be detachably connected, the main body part 111 is provided with a containing cavity 113 with one side opening 1131, and the cover body 112 covers the opening 1131 of the containing cavity 113; and

[0036] The oil injector assembly 12 comprises an inner rail pipe structure 13 and an oil injector 14, the inner rail pipe structure 13 is fixed in the accommodating cavity 113, the oil injector 14 is arranged on the inner rail pipe structure 13, and at least part of the oil injector 14 is located in the accommodating cavity 113, the oil injector 14 is respectively connected with the inner rail pipe structure 13 and the intake manifold, and the oil injector assembly 12 can be taken out of or installed into the accommodating cavity 113 through the opening 1131.

[0037] Specifically, the oil injector assembly 12 comprises the inner rail pipe structure 13, the inner rail pipe structure 13 is a single-layer pipe structure, the shell 11 is provided with the accommodating cavity 113, the inner rail pipe structure 13 is fixed in the accommodating cavity 113, that is, the shell 11 is arranged on the outer periphery of the inner rail pipe structure 13, and the accommodating cavity 113 with a side opening 1131 is arranged in the main body 111, the oil injector assembly 12 can be taken out of the accommodating cavity 113 through the opening 1131, that is, the inner rail pipe structure 13 can be taken out of the shell 11, so that when the inner rail pipe structure 13 fails, the inner rail pipe structure 13 can be taken out and repaired or replaced, thereby facilitating the later maintenance of the engine oil rail 1. In actual production and manufacturing, an operator can first complete the assembly of the oil injector assembly 12, such as first installing the oil injector 14 on the inner rail pipe structure 13, and then installing the whole oil injector assembly 12 into the accommodating cavity 113. In other embodiments, the inner rail pipe structure 13 can be first installed in the accommodating cavity 113, and then the oil injector assembly 12 is assembled through the opening 1131 of the accommodating cavity 113, thereby facilitating the processing of the engine oil rail 1 and reducing the production cycle and production cost.

[0038] The oil injector 14 is arranged on the inner rail pipe structure 13, so that the oil injector 14 can be taken into the accommodating cavity together with the inner rail pipe structure 13. The oil injector 14 is respectively connected with the inner rail pipe structure 13 and the intake manifold, so that the oil injector 14 is optionally located at least partially in the accommodating cavity 113. For example, the oil injector 14 is arranged to extend out of the accommodating cavity 113 at an end away from the inner rail pipe, so as to be connected with the intake manifold, and the remaining part is arranged in the accommodating cavity 113; or the oil injector 14 is arranged entirely in the accommodating cavity 113, and the structure of the intake manifold for being connected with the nozzle of the oil injector 14 extends into the accommodating cavity 113, so as to be connected with the oil injector 14.

[0039] In order to facilitate the installation and later maintenance of the oil injector assembly 12, the opening 1131 is arranged on the side of the shell 11 parallel to the axial direction of the inner rail pipe, so that when the cover 112 is removed, the structure of the oil injector assembly 12 can be observed as much as possible. On the other hand, the shell 11 is arranged in a columnar shape, and the side of the shell 11 parallel to the axial direction of the inner rail pipe structure 13 is the larger area side of the shell 11. The opening 1131 is arranged on this side, which can also provide more operating space. In other embodiments, the opening 1131 can also be arranged on the side of the shell 11 arranged at an angle to the axial direction of the inner rail pipe structure 13; or, the opening 1131 is arranged on the side of the shell 11 parallel to the axial direction of the inner rail pipe structure 13 and the side of the shell 11 arranged at an angle to the axial direction of the inner rail pipe structure 13.

[0040] In order to facilitate the installation of the cover 112 and the main body 111, in an embodiment, the periphery of the opening 1131 of the accommodating cavity 113 is provided with a mounting flange 115, and the second fastener 16 is fastened to the periphery of the cover 112 and the mounting flange 115; that is, the main body 111 is bent at the periphery of the opening 1131 to form a mounting flange 115, which is arranged towards the cover 112. When the cover 112 covers the opening 1131 of the accommodating cavity 113, the mounting flange 115 abuts against the periphery of the cover 112, so as to be fastened to the periphery of the cover 112 and the mounting flange 115 by the second fastener 16. Therefore, the second fastener 16 is often provided in plurality, and the plurality of second fasteners 16 are arranged at intervals along the periphery of the cover 112, so as to ensure that the periphery of the cover 112 and the mounting flange 115 are completely abutted, thereby improving the sealing degree of the shell 11. The second fastener 16 is often configured as a fastening screw or a fastening bolt, so as to facilitate the installation of the second fastener 16 and ensure the stable connection of the cover 112 and the main body 111. Of course, in other embodiments, the cover 112 and the main body 111 can also be clamped and fixed.

[0041] Further, a second sealing ring is arranged between the periphery of the cover 112 and the mounting flange 115, so as to further improve the sealing between the cover 112 and the mounting flange 115, which is helpful to improve the protection effect of the engine oil rail 1.

[0042] In the embodiment of the utility model, the circumferential edge of the avoiding hole 114 is used for sealing and fixing to the intake manifold, the one end of the fuel injector 14 away from the inner rail pipe structure 13 extends out of the avoiding hole 114 and is used for connecting to the nozzle mounting hole of the intake manifold. Specifically, the avoiding hole 114 is used for extending out the one end of the fuel injector 14 away from the inner rail pipe structure 13, thereby facilitating the communication of the fuel injector 14 with the nozzle mounting hole of the intake manifold, and therefore the inner diameter of the avoiding hole 114 is greater than the outer diameter of the fuel injector 14. In order to ensure the sealing of the shell cover 11 at the avoiding hole 114 and further ensure the protection effect of the shell cover 11, the circumferential edge of the avoiding hole 114 is used for sealing and fixing to the intake manifold.

[0043] Illustratively, the intake manifold is provided with a sealing seat, and the sealing seat is provided with a nozzle mounting hole, and the circumferential edge of the avoiding hole 114 abuts against the sealing seat. Specifically, the sealing seat has a sealing surface facing the engine oil rail 1, and the sealing surface can at least abut against the circumferential edge of the avoiding hole 114, thereby not only fixing the engine oil rail 1, but also ensuring the protection effect of the shell cover 11, and further ensuring that the engine oil rail 1 meets the safety protection requirements for fuel, and the one end of the fuel injector 14 away from the inner rail pipe structure 13 is inserted into the nozzle mounting hole, thereby facilitating the injection of fuel into the intake manifold.

[0044] Further, the first fastener 15 is fastened and connected to the circumferential edge of the avoiding hole 114 and the sealing seat, thereby not only facilitating the installation of the shell cover 11 and the intake manifold, but also ensuring the installation stability of the two. Preferably, the first fastener 15 is provided in plurality, and the plurality of first fasteners 15 are arranged at intervals along the circumferential edge of the avoiding hole 114, so as to ensure that the circumferential edge of the avoiding hole 114 and the sealing seat are completely abutted against each other, thereby improving the sealing degree of the shell cover 11. And the first fastener 15 is often configured as a fastening screw or a fastening bolt. In other embodiments, the shell cover 11 can also be clamped or welded to the sealing seat.

[0045] Further, a first sealing ring is clamped between the circumferential edge of the avoiding hole 114 and the sealing seat, thereby further improving the sealing property between the circumferential edge of the avoiding hole 114 and the sealing seat, and helping to improve the protection effect of the engine oil rail 1.

[0046] In the embodiment, the avoiding hole 114 is provided in a waist hole shape, and in other embodiments, the avoiding hole 114 can also be circular or square or irregular in shape, and the present scheme does not limit this. Optionally, the avoiding hole 114 is arranged on the side of the main body part 111 opposite to the shell cover, the first fastener 15 passes through the accommodating cavity 113 and extends out of the shell cover 11 and is fastened and connected to the sealing seat, thereby facilitating the installation of the shell cover 11 and the intake manifold, and also facilitating the observation of the installation effect of the fuel injector 14 and the intake manifold. In other embodiments, the avoiding hole 114 can also be arranged on the side of the main body part 111 adjacent to the shell cover.

[0047] For the convenience of the installation of the inner rail pipe structure 13, in the embodiment of the utility model, please refer to Figure 4 , the inner rail pipe structure 13 is provided with an installation supporting leg 131, and the installation supporting leg 131 is detachably installed in the air intake manifold through the avoiding hole 114. Specifically, the installation supporting leg 131 is installed in the air intake manifold through the avoiding hole 114, that is, the inner rail pipe structure 13 does not have a direct connection relationship with the shell cover 11, thereby reducing the influence of the shell cover 11 shaking on the installation stability of the inner rail pipe structure 13, further ensuring the connection stability of the fuel injector 14 and the air intake manifold, and the shell cover 11 does not need to bear the weight of the entire fuel injector assembly 12, which helps to reduce the installation stability of the shell cover 11, ensures the sealing stability between the shell cover 11 and the air intake manifold, and further improves the protection effect of the shell cover 11. Of course, in other embodiments, the fuel injector assembly 12 can also be installed on the shell cover 11.

[0048] Please refer to Figures 2 to 4 , in the embodiment of the utility model, the fuel injector assembly 12 further includes a wire harness assembly, and the shell cover 11 is further provided with a wire harness sealing structure 116, one end of the wire harness assembly extends into the accommodating cavity 113 to be electrically connected to the fuel injector 14, and the wire harness sealing structure 116 is sealingly connected to the wire harness assembly. Specifically, the wire harness assembly is used to communicate with the fuel injector 14, so that the fuel injector 14 can receive the ECU command, thereby controlling the fuel injector 14 to work to supply oil to the engine under different working conditions. In the prior art, since the outer rail 21 and the inner rail 22 extend along the shape and the gap between them is small, the fuel injector 23 is basically exposed to the external space, and the connection between the wire harness assembly and the fuel injector 23 is also exposed to the external space, and the protection effect of the connection between the wire harness assembly and the fuel injector 23 is poor. In the embodiment, one end of the wire harness assembly extends into the accommodating cavity 113 to be electrically connected to the fuel injector 14, so that the shell cover 11 can provide a protection effect for the connection between the wire harness assembly and the fuel injector 14, thereby improving the electrical connection stability of the wire harness assembly and the fuel injector 14. And in order to ensure the sealing of the shell cover 11, the shell cover 11 is provided with a wire harness sealing structure 116, and the wire harness sealing structure 116 is sealingly connected to the wire harness assembly.

[0049] The wire harness sealing structure 116 can be a wire harness sealing sleeve provided on the shell cover 11, the wire harness assembly is provided in the shell cover 11 by the wire harness sealing sleeve, and the inner circumferential surface of the wire harness sealing sleeve is sealingly connected to the outer circumference of the shell cover 11. The wire harness sealing structure 116 can also be configured as a wiring terminal provided in and fixed to the shell cover 11, and the wire harness assembly is divided into two parts, the part inside the shell cover 11 is connected to the inner side of the wiring terminal, and the part outside the shell cover 11 is connected to the outer side of the wiring terminal.

[0050] Please refer to Figures 2 to 4In the embodiment of the utility model, oil injector assembly 12 still include located in the oil inlet joint 132 and oil return joint 133 of inner rail pipe structure 13, oil inlet joint 132 and oil return joint 133 are all located in accommodating cavity 113. Specifically, oil inlet joint 132 is connected to fuel pump through oil inlet pipe, thereby supplies oil for engine oil rail 1, oil return joint 133 connects oil return pipe for recycling excess fuel. In prior art, because outer layer rail 21 and inner layer rail 22 extend along shape, and the gap between them is small, therefore one end of oil inlet joint 132 and oil return joint 133 passes through outer layer rail 21, is communicated in inner layer rail 22, the rest part is basically exposed to outside space, make the connection of oil inlet joint 132 and oil inlet pipe, and the connection of oil return structure and oil return pipe are all exposed to outdoor, and the protective property is poor. And in the embodiment, because oil inlet joint 132 and oil return joint 133 are all located in accommodating cavity 113, therefore the connection of oil inlet joint 132 and oil inlet pipe, and the connection of oil return joint 133 and oil return pipe are all located in accommodating cavity 113, thereby further improve the protective effect of the shell 11.

[0051] Further, shell 11 is also provided with air inlet joint 117 and air return joint 118, air inlet joint 117 and air return joint 118 are all communicated in accommodating cavity 113. Specifically, the air inlet joint 117 is used to pass inert gas into the shell 11, the air return joint 118 is used for inert gas to flow out, so that the shell 11 and the inner rail pipe structure 13 are filled with flowing inert gas, so as to form a protective layer, further improve the safety protection level of the engine oil rail 1. And once the inner rail pipe structure 13 has accidental oil leakage (such as between the oil inlet joint 132 and the oil inlet pipe, between the oil return joint 133 and the oil return pipe or between the inner rail pipe structure 13 and the oil injector 14), fuel can be collected between the shell 11 and the inner rail pipe structure 13, and then flow in the circulating flow of inert gas, so as to flow out of the accommodating cavity 113 between the air inlet joint 117 and the air return joint 118, thereby facilitating the collection of accidental oil leakage. Therefore, the at least inner rail pipe structure 13 is suspended in the shell 11, that is, the inner rail pipe structure 13 has a certain gap with at least the bottom of the shell 11.

[0052] In addition, in order to ensure the sealing effect of the shell 11, in an embodiment, the oil injector assembly 12 further comprises an oil inlet pipe and an oil return pipe, the oil inlet pipe is provided through the air inlet joint 117 to be connected to the oil inlet joint 132, and the oil return pipe is provided through the air return joint 118 to be connected to the oil return joint 133. That is, the oil inlet pipe extends into the accommodating cavity 113 from the air inlet joint 117 and is connected to the oil inlet joint 132, and the oil return pipe extends into the accommodating cavity 113 from the air return joint 118 and is connected to the oil return joint 133, so that there is no need to additionally provide a hole structure for the oil inlet pipe and the oil return pipe to pass through, and there is no need to consider the sealing of the oil inlet pipe and the oil return pipe, thereby facilitating the processing of the shell 11.

[0053] For the convenience of installation, the air inlet joint 117 includes an axially sleeved inner hole and an outer ring hole, the oil inlet pipe is arranged in the inner hole, and the outer ring hole is used for passing the inert gas; the air return joint 118 includes an axially sleeved inner hole and an outer ring hole, the oil return pipe is arranged in the inner hole, and the outer ring hole is used for passing the inert gas.

[0054] In the embodiment of the utility model, the inner rail pipe structure 13 includes a first inner rail pipe 134, a second inner rail pipe 135 and a communication pipe 136 communicating the first inner rail pipe 134 and the second inner rail pipe 135, the oil inlet joint 132 is arranged on the first inner rail pipe 134, the oil return joint 133 is arranged on the second inner rail pipe 135, and the first inner rail pipe 134 and the second inner rail pipe 135 are both provided with the fuel injector 14. In the prior art, since the outer layer rail 21 and the inner layer rail 22 extend along the shape, and the gap between the two is small and cannot be disassembled, the inner layer rail 22 is often configured as a linear pipe structure, and the oil rail 2 is only provided with the oil inlet joint 132 and is not provided with the oil return joint 133. After the engine stops, the excess fuel can only be retained in the oil rail 2 and cannot be discharged, and the inner layer rail 22 cannot be cleaned, which is not conducive to the use of the oil rail 2. In the embodiment, the inner rail pipe structure 13 includes a first inner rail pipe 134, a second inner rail pipe 135 and a communication pipe 136 communicating the first inner rail pipe 134 and the second inner rail pipe 135, the oil inlet joint 132 is arranged on the first inner rail pipe 134, the oil return joint 133 is arranged on the second inner rail pipe 135, thereby facilitating the cleaning of the inner rail pipe structure 13 and the discharge of excess fuel after the engine stops. For example, the inert gas is introduced into the inner rail pipe structure 13 through the oil inlet joint 132, and the remaining fuel is driven to be discharged through the oil return joint 133 under the pressure of the inert gas, thereby achieving the cleaning of the inner rail pipe structure 13. The three-section pipe structure helps to reduce the machining length of the inner rail pipe structure 13, thereby facilitating the machining of the inner rail pipe structure 13. The first inner rail pipe 134 and the second inner rail pipe 135 are arranged along the axial direction, and the first inner rail pipe 134 and the second inner rail pipe 135 are both provided with the fuel injector 14. The plurality of fuel injectors 14 are arranged at intervals on the first inner rail pipe 134 and the second inner rail pipe 135. In other embodiments, the inner rail pipe structure 13 can also be configured as a complete pipe structure, and the two ends of the pipe structure are separately provided with the oil inlet joint 132 and the oil return joint 133.

[0055] The utility model discloses still put forward a kind of methanol engine assembly, the methanol engine assembly includes engine oil rail 1, the specific structure of the engine oil rail 1 refers to above-mentioned embodiment, since the methanol engine assembly adopts all technical solutions of above-mentioned all embodiments, at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer repeat.

[0056] The utility model discloses still a kind of vehicle, the vehicle includes methanol engine assembly, the specific structure of the methanol engine assembly refers to above-mentioned embodiment, since the vehicle adopts all technical solutions of above-mentioned all embodiments, at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration.

[0057] The above is only exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the contents of drawings, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. An engine oil rail for mounting to an intake manifold, characterized by, The engine oil rail comprises: a shell cover comprising a main body and a cover body, the main body is provided with a containing cavity with an open side, and the cover body covers the opening of the containing cavity; and an oil injector assembly comprising an inner rail pipe structure and an oil injector, the inner rail pipe structure is fixed in the containing cavity, the oil injector is arranged on the inner rail pipe structure, and at least part of the oil injector is arranged in the containing cavity, the oil injector is capable of being connected to the inner rail pipe structure and the intake manifold respectively, and the oil injector assembly can be taken out of or put into the containing cavity through the opening.

2. The engine oil rail of claim 1, wherein, The shell cover is provided with a relief hole, the periphery of the relief hole is used for sealing and fixing on the intake manifold, and the end of the oil injector away from the inner rail pipe structure extends out of the relief hole and is used for being connected to the nozzle mounting hole of the intake manifold.

3. The engine oil rail of claim 2, wherein, The intake manifold is provided with a sealing seat, the sealing seat is provided with the nozzle mounting hole, and the periphery of the relief hole abuts against the sealing seat. A first fastener is fastened and connected to the periphery of the relief hole and the sealing seat, and / or a first sealing ring is arranged between the periphery of the relief hole and the sealing seat.

4. The engine oil rail of claim 2, wherein, The inner rail pipe structure is provided with a mounting leg, and the mounting leg is detachably mounted on the intake manifold through the relief hole.

5. The engine oil rail of claim 1, wherein, The periphery of the opening of the containing cavity is provided with a mounting flange, a second fastener is fastened and connected to the periphery of the cover body and the mounting flange, and / or a second sealing ring is arranged between the periphery of the cover body and the mounting flange.

6. The engine oil rail of claim 1, wherein, The oil injector assembly further comprises a wire harness assembly, the shell cover is further provided with a wire harness sealing structure, one end of the wire harness assembly extends into the containing cavity to be electrically connected to the oil injector, and the wire harness sealing structure is sealingly connected to the wire harness assembly.

7. The engine oil rail of any one of claims 1 to 6, wherein, The oil injector assembly further comprises an oil inlet connector and an oil return connector arranged on the inner rail pipe structure, and the oil inlet connector and the oil return connector are arranged in the containing cavity.

8. The engine oil rail of claim 7, wherein, The inner rail pipe structure comprises a first inner rail pipe, a second inner rail pipe, and a communication pipe communicating the first inner rail pipe and the second inner rail pipe, the oil inlet connector is arranged on the first inner rail pipe, the oil return connector is arranged on the second inner rail pipe, and the first inner rail pipe and the second inner rail pipe are both provided with the oil injector.

9. The engine oil rail of claim 7, wherein, The shell cover is further provided with an air inlet connector and an air return connector, and the air inlet connector and the air return connector are both communicated with the containing cavity.

10. The engine oil rail of claim 9, wherein, The oil injector assembly further comprises an oil inlet pipe and an oil return pipe, the oil inlet pipe is arranged in the air inlet connector to be connected to the oil inlet connector, and the oil return pipe is arranged in the air return connector to be connected to the oil return connector.

11. A methanol engine assembly, characterized by The engine oil rail comprises the engine oil rail according to any one of claims 1 to 10.

12. A vehicle characterized by comprising: The methanol engine assembly comprises the methanol engine assembly according to claim 11.

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