Protective cover for oil return pipe of diesel engine

Abstract

The utility model discloses a protective cover for an oil return pipe of a diesel engine. The protective cover comprises a protective plate, a supporting arm and an abutting block. Supporting arms and abutting blocks are symmetrically arranged on the bottom face of the protection plate in pairs. The symmetrically-arranged supporting arms and the abutting blocks are arranged on the two sides of the protection plate; the supporting arm and the abutting block are clamped to the top of the oil sprayer. The oil return pipe is arranged between the supporting arms on the two sides and the abutting block in a penetrating mode. The device is suitable for a diesel engine without an integral protective cover cap, is used for protecting the mounting and connecting part of the oil injector oil return pipe, is simple in structure, simple and convenient to manufacture and remarkable in effect, effectively reduces the after-sale fracture oil leakage failure rate of parts of the oil injector oil return pipe of the diesel engine after being used, and effectively improves the use experience of a user.

Description

Technical Field

[0001] The present application relates to the technical field of protection of an injector oil return pipe, and in particular to a protective cover for an oil return pipe of a diesel engine. Background Art

[0002] After the diesel engine assembly is generally assembled, a protective cover is installed on the top to beautify the appearance and protect the top components, such as the protective cover of the electronic fuel injector terminal disclosed in CN201510486026.6. The protective cover can provide conventional protection for the electronic fuel injector terminal and can achieve quick plugging and unplugging of the electronic fuel injector terminal. However, in some special configuration environments, the diesel engine space boundary size is large, the space of the diesel engine assembly area of ​​the vehicle is compact, and there is no space for installing the protective cover. Such diesel engines cannot be equipped with the existing structure of the cover to protect the top components.

[0003] The fuel return pipe of the diesel engine injector is composed of a hose and a pipe joint. After the pipe joint is connected to the injector, the entire fuel return pipe is in a tight and suspended state. The specific position is as follows Figure 1 As shown in the red box. If the pipe joint is accidentally pressed or bumped by external force, it is easy to cause the pipe joint to break, resulting in a serious fault that the diesel engine cannot return oil.

[0004] The information disclosed in the background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0005] In response to the above technical problems, the present application provides a protective cover for a diesel engine oil return pipe, which can effectively prevent the injector oil return pipe from being pressed and broken and damaged, and is particularly suitable for use in a restricted engine environment with insufficient installation space on a vehicle.

[0006] The present application provides a protective cover for an oil return pipe of a diesel engine, comprising: a protective plate, a support arm, and an abutment block; the support arms and the abutment blocks are symmetrically arranged in pairs on the bottom surface of the protective plate; the symmetrically arranged support arms and the abutment blocks are arranged on both sides of the protective plate; the support arms and the abutment blocks are clamped on the top of the injector; and the oil return pipe is passed through the support arms and the abutment blocks on both sides.

[0007] Preferably, the protective plate, the support arm and the abutment block form a protective cavity; the top interface of the injector is accommodated in the protective cavity.

[0008] Preferably, the support arm is vertically arranged on the bottom surface of the protective plate; and the extended end of the support arm abuts against the step surface of the injector.

[0009] Preferably, the abutment block is vertically arranged on the bottom surface of the protective plate; the abutment block abuts against the fuel injector.

[0010] Preferably, it comprises: a warning area; the warning area is arranged in the central area of ​​the protective plate.

[0011] Preferably, it comprises: a reinforcement block; the reinforcement block is accommodated and arranged on the inner side wall where the support arm and the protective plate meet.

[0012] Preferably, it comprises: a reinforcing block; the reinforcing block is accommodated and arranged on the inner side wall where the abutting block and the protective plate meet.

[0013] Preferably, it comprises: a first clamping groove; and the first clamping groove is arranged on the extended end surface of the support arm.

[0014] Preferably, the device is integrally cast using PA material.

[0015] The beneficial effects of this application include:

[0016] 1) The protective cover for the diesel engine oil return pipe provided in this application is suitable for use with diesel engines without an integral protective cover, and is used to protect the installation connection of the injector oil return pipe. The device has a simple structure, is easy to make, and has significant effects. After use, it effectively reduces the after-sales breakage and oil leakage failure rate of diesel engine injector oil return pipe components, and effectively improves the user experience.

[0017] 2) The protective cover for the diesel engine oil return pipe provided in the present application can be installed on the interface between the injector and the oil return pipe to achieve reliable protection for the easily breakable interface and avoid the structure from being broken or damaged when it is impacted or bumped.

[0018] 3) The protective cover for the diesel engine oil return pipe provided in the present application is stuck at the injector oil return pipe during assembly to prevent the diesel engine injector oil return pipe parts from being pressed or bumped by external forces during logistics turnover, loading and debugging, and after-sales maintenance of the whole vehicle. This may cause the injector oil return pipe and the injector connection that are suspended in the air without a support point after installation to break, thereby reducing the failure rate of diesel engine and diesel engine after-sales injector oil return pipe breakage and improving customer satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial schematic diagram of an existing diesel engine without an integral protective cover installed;

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a protective cover for an oil return pipe of a diesel engine in at least one embodiment provided in the present application;

[0021] Figure 3 A schematic diagram of the main structure of a protective cover for an oil return pipe of a diesel engine in at least one embodiment provided in the present application;

[0022] Figure 4A schematic side view of the structure of a protective cover for a diesel engine oil return pipe in at least one embodiment provided in the present application;

[0023] Figure 5 A schematic diagram of a top view of a protective cover for an oil return pipe of a diesel engine in at least one embodiment provided in the present application;

[0024] Figure 6 A schematic diagram of the structure of a protective cover for an oil return pipe of a diesel engine in at least one embodiment provided in the present application when viewed from above;

[0025] Figure 7 A schematic diagram of the use status of a protective cover for a diesel engine oil return pipe in at least one embodiment provided in the present application; the red frame in the figure indicates the installation position of the device;

[0026] Legend:

[0027] The protection plate 1 , the warning area 11 , the first clamping groove 21 , the first support arm 22 , the second support arm 23 , the reinforcement block 31 , the first abutting block 32 , the second abutting block 33 , and the second clamping groove 311 . DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0031] See also Figures 1 to 7The protective cover for the oil return pipe of a diesel engine provided in the present application includes: a protective plate 1, a support arm, and an abutment block; the support arms and abutment blocks are symmetrically arranged in pairs on both sides of the bottom surface of the protective plate 1; the support arms and abutment blocks are arranged in pairs on one side of the bottom surface of the protective plate 1 and abut against the top surface of the injector; the protective plate 1, the support arms, and the abutment blocks surround a protective space, and the joint covers of the oil return pipe and each injector are arranged therein, so as to realize effective protection of the joint position of the oil return pipe and the injector. After installation, the support arms and abutment blocks on both sides of the protective plate 1 are arranged at intervals, and the space left is convenient for the oil return pipe to pass through, while preventing the oil return pipe from being squeezed, so that the suspended cover is arranged above the oil return pipe to provide protection.

[0032] The injector return pipe installation pipe joint is completely covered to play a protective role. The design process must ensure that the protective cap itself will not interfere with other parts and the fixing and installation method is simple.

[0033] In a specific embodiment, it includes: a warning area 11; the warning area 11 is set on the top surface of the protective plate 1, and a warning sign can be set as needed to facilitate the assembly personnel and users to understand the operating specifications of the area to avoid excessive pressure in the area causing the protective cover to break and the return oil pipe to break. A striking warning sign "No Heavy Pressure" is added to the exposed surface as needed to prevent customers from placing heavy objects here during actual use.

[0034] In a specific embodiment, the two sides of the protective plate 1 for sampling the intervals left by the support arms and the abutment blocks extend outwards respectively to increase the protection area and improve the protection effect.

[0035] In a specific embodiment, the support arm includes: a first support arm 22 and a second support arm 23; the first support arm 22 and the second support arm 23 are respectively arranged on both sides of the bottom surface of the protective plate 1; the center line of the first support arm 22 and the second support arm 23 is an oblique line and passes through the center of the protective plate 1. The first support arm 22 and the second support arm 23 are obliquely symmetrically arranged, which can achieve effective covering of the fuel injection pipe and provide reliable support using the existing structure of the fuel injection pipe.

[0036] In a specific embodiment, it includes: a first clamping groove 21; the first clamping groove 21 is respectively arranged on the extended ends of the first support arm 22 and the second support arm 23; the first clamping groove 21 is clamped on the step surface of the outer side wall of the injection pipe, so as to provide reliable support for the first support arm 22 and the second support arm 23.

[0037] In a specific embodiment, an anti-skid pad is provided on the end surface of the first clamping groove 21 to improve the clamping reliability.

[0038] In a specific embodiment, the abutment block includes: a first abutment block 32 and a second abutment block 33; the first abutment block 32 is arranged at one side of the first support arm 22 and connected to the side wall of the first support arm 22; the second abutment block 33 is arranged at one side of the second support arm 23 and connected to one side of the second support arm 23; the first abutment block 32 is arranged opposite to the second support arm 23; the second abutment block 33 is arranged opposite to the first support arm 22. According to this arrangement, the top of the injector can be used to provide support, and at the same time, it is convenient for the return oil pipe to pass through the gap between the abutment blocks and the support arms on both sides.

[0039] In a specific embodiment, the bottom surface of the abutment block abuts against the top surface of the fuel injector.

[0040] In a specific embodiment, it includes: a second clamping groove 311 arranged in pairs; the second clamping groove 311 is arranged on the bottom surface of the protective plate 1 and is arranged close to the inner wall of the first abutment block 32. Another second clamping groove 311 is arranged on the bottom surface of the protective plate 1 and is arranged close to the inner wall of the second abutment block 33. It is convenient for the clamping interface to provide a force point.

[0041] In a specific embodiment, it includes: reinforcement blocks 31 arranged in pairs; the reinforcement blocks 31 are arranged on the inner walls of the abutment blocks on both sides and the support arms to enhance the supporting force.

[0042] In a specific embodiment, the device is integrally cast using PA material.

[0043] Practical application:

[0044] Improvement on the problem of oil return pipe rupture of a certain type of diesel engine supporting light passenger vehicle

[0045] In 2021, a certain type of diesel engine equipped with a domestic light passenger car received a large number of feedbacks from the vehicle production site that the injector return pipe was broken. After confirming the matching status, the engine compartment space of the light passenger car was small, and the matching engine protective cover interfered with the cab, so the engine top protective cover was cancelled. During the actual engine installation process, due to the close distance between the top of the engine and the cab and the small space, when the engine was hoisted into the engine compartment, the suspended part of the injector return pipe was very likely to collide with the vehicle cab and cause breakage, affecting the quality of the engine product.

[0046] An injector oil return pipe protective cover with the above-mentioned structure was installed on the matching special light commercial vehicle model. During the actual implementation period from October 2022 to September 2023, there was no feedback on the injector oil return pipe breakage problem in the production process of this light commercial vehicle model.

[0047] Example 2: Vehicles equipped with a certain model of diesel engine were reported in batches at a modification factory for the problem of injector return pipe rupture.

[0048] In March 2022, a vehicle modification factory in Suizhou, Hubei, reported a batch of broken fuel return pipes of a certain model of diesel engines. After on-site investigation, it was found that this model was also not equipped with an engine protective cover due to limited space in the engine compartment. In addition, during the modification process, the on-site operator habitually placed tools and related accessories on the top of the engine for easy grasping. The heavy pressure caused by this process broke the suspended fuel return pipe of the diesel engine. After assembling the fuel return pipe protective cover of the injector with the above structure on site, the modification factory has not reported any broken fuel return pipes as of September 2023.

[0049] It can be seen from the above actual on-site application results that the above-mentioned device effectively solves the problem, and has a simple structure, easy production and low cost. In October 2022, the drawings and technical status were archived and mass assembly was implemented on engines without protective covers.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective cover for a diesel engine oil return pipe, characterized in that: include: A protective plate (1), a support arm, and an abutment block; the support arms and the abutment blocks are symmetrically arranged in pairs on the bottom surface of the protective plate (1); the symmetrically arranged support arms and the abutment blocks are arranged on both sides of the protective plate (1); the support arms and the abutment blocks are clamped on the top of the fuel injector; and the oil return pipe is passed between the support arms and the abutment blocks on both sides.

2. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: The protection plate (1), the support arm and the abutment block form a protection cavity; the top interface of the fuel injector is accommodated in the protection cavity.

3. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: The support arm is vertically arranged on the bottom surface of the protection plate (1); the extended end of the support arm abuts against the step surface of the fuel injector.

4. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: The abutment block is vertically arranged on the bottom surface of the protection plate (1); the abutment block abuts against the fuel injector.

5. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: include: Warning area (11); the warning area (11) is arranged in the central area of ​​the protection plate (1).

6. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: include: A reinforcing block (31); the reinforcing block (31) is accommodated and arranged on the inner side wall where the supporting arm and the protective plate (1) are connected.

7. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: include: The reinforcing block (31) is accommodated and arranged on the inner side wall where the abutting block and the protective plate (1) are connected.

8. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: include: A first clamping groove (21); the first clamping groove (21) is arranged on the extended end surface of the support arm.

9. The protective cover for the diesel engine oil return pipe according to claim 1, characterized in that: The protective cover for the diesel engine oil return pipe is made of PA material and is integrally cast.

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