Multifunctional split type engine cylinder head cover

Abstract

The utility model discloses a multifunctional split type engine cylinder head cover, belongs to the technical field of engines, and solves the problems that the cylinder head cover of the existing engine adopts an integral design, is extremely poor in maintainability, and is not favorable for sealing after being disassembled and assembled for multiple times. The multifunctional split type engine cylinder head cover comprises a cylinder head cover body, the cylinder head cover body comprises an upper cylinder head cover body and a lower cylinder head cover body, the lower cylinder head cover body is detachably installed at the bottom of the upper cylinder head cover body, and the bottom of the lower cylinder head cover body is detachably connected with a cylinder head. A fuel injector sealing connector is arranged at the top of the upper cylinder head cover, a crankcase ventilation flange connector is further arranged at the top of the upper cylinder head cover, a high-pressure fuel oil installation lug is arranged on the side wall of the upper cylinder head cover, and a supercharger oil return flange connector is arranged on the side wall of the lower cylinder head cover. The multifunctional split type engine cylinder head cover has multiple functions and is easy and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and more specifically, to a multi-functional split-type engine cylinder head cover. Background Technology

[0002] The cylinder head cover of an engine is used to protect moving parts such as valve rocker arms and to seal the top of the cylinder head, preventing engine oil, crankcase gas and other substances from leaking out. It also has the functions of sound insulation and heat insulation.

[0003] The cylinder head cover of existing engines mostly adopts an integral design, which has extremely poor maintainability. Repeated disassembly and reassembly are not conducive to the sealing of the cover. In addition, the cylinder head cover can only be installed on the engine first, which is a complicated installation process and leads to a decrease in its working efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a multi-functional split engine cylinder head cover. It adopts a split structure, which is easy to disassemble and assemble, and has good sealing performance after multiple disassembly and assembly. It is equipped with a turbocharger oil return flange interface, a crankcase ventilation flange interface, an injector sealing interface, a high-pressure fuel mounting bracket, and other structures. It has multiple functions, is easy to install, and effectively improves installation efficiency.

[0005] The technical solution of this utility model is as follows: a multifunctional split-type engine cylinder head cover, including a split upper cylinder head cover and a lower cylinder head cover, wherein the lower cylinder head cover is detachably installed at the bottom of the upper cylinder head cover, and the bottom of the lower cylinder head cover is detachably connected to the cylinder head. The top of the upper cylinder head cover is provided with an injector sealing interface, and one side of the top of the upper cylinder head cover is also provided with a crankcase ventilation flange interface. The side wall of the upper cylinder head cover is provided with a high-pressure fuel mounting bracket, and the side wall of the lower cylinder head cover is provided with a turbocharger return oil flange interface. Sealing strips are provided between the upper cylinder head cover and the lower cylinder head cover, and between the lower cylinder head cover and the cylinder head. The upper cylinder head cover and the lower cylinder head cover are connected by multiple first bolt assemblies, and the lower cylinder head cover and the cylinder head are connected by multiple second bolt assemblies, wherein the multiple first bolt assemblies and the multiple second bolt assemblies are staggered.

[0006] As a further improvement, the crankcase ventilation flange interface is provided with an annular groove.

[0007] Furthermore, a groove is provided on the side wall of the high-pressure fuel mounting bracket.

[0008] Furthermore, the turbocharger oil return flange interface is located below the crankcase ventilation flange interface, and the opening of the turbocharger oil return flange interface is tilted upwards.

[0009] Furthermore, the first bolt assembly includes a first bolt hole, a threaded hole, and a first fastening bolt. The first bolt hole is integrally formed on the side wall of the upper cylinder head cover, the threaded hole is integrally formed on the side wall of the lower cylinder head cover, and the first fastening bolt passes through the first bolt hole and is threadedly connected to the threaded hole.

[0010] Furthermore, the second bolt assembly includes a second bolt hole, a third bolt hole, and a second fastening bolt. The second bolt hole is integrally formed on the side wall of the lower cylinder head cover, and the third bolt hole is integrally formed on the side wall of the cylinder head. The second fastening bolt passes through the second bolt hole and the third bolt hole sequentially from top to bottom and is threaded into the engine.

[0011] Furthermore, the side wall of the upper cylinder head cover is provided with reinforcing ribs.

[0012] Furthermore, the top and bottom of the lower cylinder head cover are provided with sealing grooves, and the sealing strip is installed in the sealing grooves.

[0013] Beneficial effects

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This utility model discloses a multi-functional split-type engine cylinder head cover, which adopts a split structure, making it easy to disassemble and assemble. It also has good sealing performance after multiple disassembly and assembly. It is equipped with a turbocharger oil return flange interface, a crankcase ventilation flange interface, an injector sealing interface, a high-pressure fuel mounting bracket, and other structures, which facilitates installation and effectively improves the overall installation efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the upper cylinder head cover of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the lower cylinder head cover of this utility model.

[0020] Wherein: 1-Upper cylinder head cover, 2-Lower cylinder head cover, 3-Cylinder head, 4-Sealing strip, 5-Annular groove, 6-Crankcase ventilation flange interface, 7-Injector sealing interface, 8-High-pressure fuel mounting bracket, 9-Sinking groove, 10-Turbocharger return flange interface, 11-First bolt hole, 12-Threaded hole, 13-Reinforcing rib, 14-Sealing groove, 15-First fastening bolt, 16-Second fastening bolt, 17-Second bolt hole, 18-Third bolt hole. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0022] See Figure 1-4 A multi-functional split-type engine cylinder head cover includes a split upper cylinder head cover 1 and a lower cylinder head cover 2. The lower cylinder head cover 2 is detachably installed at the bottom of the upper cylinder head cover 1, and the bottom of the lower cylinder head cover 2 is detachably connected to the cylinder head 3. The top of the upper cylinder head cover 1 is provided with an injector sealing interface 7, and one side of the top of the upper cylinder head cover 1 is also provided with a crankcase ventilation flange interface 6. The side wall of the upper cylinder head cover 1 is provided with a high-pressure fuel mounting bracket 8, and the side wall of the lower cylinder head cover 2 is provided with a turbocharger return oil flange interface 10. Sealing strips 4 are provided between the upper cylinder head cover 1 and the lower cylinder head cover 2, and between the lower cylinder head cover 2 and the cylinder head 3, effectively improving the sealing performance between the upper cylinder head cover 1 and the lower cylinder head cover 2, and between the lower cylinder head cover 2 and the cylinder head 3. The sealing between cylinder heads 3 is achieved through multiple first bolt assemblies connecting the upper cylinder head cover 1 and the lower cylinder head cover 2, and multiple second bolt assemblies connecting the lower cylinder head cover 2 and the cylinder head 3. These first and second bolt assemblies are staggered, effectively improving the connection strength between the upper cylinder head cover 1, the lower cylinder head cover 2, and the cylinder head 3. The cylinder head cover adopts a split structure, with the upper cylinder head cover 1 and the lower cylinder head cover 2 connected by bolts, facilitating disassembly and assembly. After multiple disassembly and assembly, the sealing performance is good. It also features a turbocharger return flange interface 10, a crankcase ventilation flange interface 6, an injector sealing interface 7, and a high-pressure fuel mounting bracket 8, facilitating installation and effectively improving overall installation efficiency.

[0023] In this embodiment, the crankcase ventilation flange interface 6 is provided with an annular groove 5. The annular groove 5 plays a role in positioning and assisting installation, making it easy to align with the multiple bolt holes on the crankcase ventilation flange interface 6, thereby improving installation efficiency.

[0024] In this embodiment, a groove 9 is provided on the side wall of the high-pressure fuel mounting bracket 8. The groove 9 serves to assist in installation, making it easier to align with the multiple through holes on the high-pressure fuel mounting bracket 8 and improve installation efficiency. At the same time, it reduces the weight of the high-pressure fuel mounting bracket 8, thereby reducing manufacturing costs.

[0025] In this embodiment, the turbocharger return flange interface 10 is located below the crankcase ventilation flange interface 6, and the opening of the turbocharger return flange interface 10 is tilted upwards, which facilitates the flow of liquid to the upper cylinder head cover 1 under the action of gravity; and can avoid positional interference between the pipe connected to the turbocharger return flange interface 10 and other components.

[0026] In this embodiment, the first bolt assembly includes a first bolt hole 11, a threaded hole 12, and a first fastening bolt 15. The first bolt hole 11 is integrally formed on the side wall of the upper cylinder head cover 1, and the threaded hole 12 is integrally formed on the side wall of the lower cylinder head cover 2. The first fastening bolt 15 passes through the first bolt hole 11 and is threadedly connected to the threaded hole 12, which facilitates the installation and removal between the upper cylinder head cover 1 and the lower cylinder head cover 2.

[0027] In this embodiment, the second bolt assembly includes a second bolt hole 17, a third bolt hole 18, and a second fastening bolt 16. The second bolt hole 17 is integrally formed on the side wall of the lower cylinder head cover 2, and the third bolt hole 18 is integrally formed on the side wall of the cylinder head 3. The second fastening bolt 16 passes through the second bolt hole 17 and the third bolt hole 18 from top to bottom and is threaded to the engine, which facilitates the installation and removal of the lower cylinder head cover 2 and the cylinder head cover 3.

[0028] Preferably, the plurality of first bolt holes 11 on the upper cylinder head cover 1 correspond one-to-one with the plurality of threaded holes 12 on the lower cylinder head cover 2, and the plurality of second bolt holes 17 on the lower cylinder head cover 2 correspond one-to-one with the plurality of third bolt holes 18 on the cylinder head 3. Furthermore, the plurality of second bolt holes 17 and the plurality of third bolt holes 18 on the lower cylinder head cover 2 are staggered, which effectively enhances the connection strength between the lower cylinder head cover 2 and the upper cylinder head cover 1 and the cylinder head 3.

[0029] The upper cylinder head cover 1 has multiple upper mounting holes 11 on its side wall, and the lower cylinder head cover 2 has multiple lower bolt holes 12 on its side wall. The multiple upper mounting holes 11 correspond one-to-one with the multiple lower bolt holes 12. The lower bolt holes 12 are internally threaded with fastening bolts 15. The fastening bolts 15 pass through the upper mounting holes 11 and are threadedly connected to the lower bolt holes 12, which facilitates the installation and removal of the upper cylinder head cover 1 and the lower cylinder head cover 2.

[0030] In this embodiment, a reinforcing rib 13 is provided on the side wall of the upper cylinder head cover 1. The reinforcing rib 13 on the side wall of the upper cylinder head cover 1 is connected to the high-pressure fuel mounting bracket 8 and the upper mounting hole 11 to enhance the overall structural strength of the upper cylinder head cover 1 and strengthen the connection strength between the upper mounting hole 11, the high-pressure fuel mounting bracket 8 and the upper cylinder head cover 1.

[0031] In this embodiment, the top and bottom of the lower cylinder head cover 2 are provided with sealing grooves 14, and the sealing strip 5 is installed in the sealing grooves 14 to further enhance the sealing between the upper cylinder head cover 1 and the lower cylinder head cover 2, and between the lower cylinder head cover 2 and the cylinder head 3.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A multi-functional split-type engine cylinder head cover, characterized in that, The system includes a split upper cylinder head cover (1) and a lower cylinder head cover (2). The lower cylinder head cover (2) is detachably installed at the bottom of the upper cylinder head cover (1). The bottom of the lower cylinder head cover (2) is detachably connected to the cylinder head (3). The top of the upper cylinder head cover (1) is provided with an injector sealing interface (7). One side of the top of the upper cylinder head cover (1) is also provided with a crankcase ventilation flange interface (6). The side wall of the upper cylinder head cover (1) is provided with a high-pressure fuel mounting bracket (8). The side wall of the lower cylinder head cover (2) is provided with a turbocharger return oil flange interface (10). The upper cylinder head cover (1) and the lower cylinder head cover (2), and the lower cylinder head cover (2) and the cylinder head (3) are all provided with sealing strips (4). The upper cylinder head cover (1) and the lower cylinder head cover (2) are connected by multiple first bolt assemblies. The lower cylinder head cover (2) and the cylinder head (3) are connected by multiple second bolt assemblies. The multiple first bolt assemblies and the multiple second bolt assemblies are staggered.

2. The multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The crankcase ventilation flange interface (6) is provided with an annular groove (5).

3. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The high-pressure fuel mounting bracket (8) has a groove (9) on its side wall.

4. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The turbocharger return flange interface (10) is located below the crankcase ventilation flange interface (6), and the opening of the turbocharger return flange interface (10) is tilted upward.

5. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The first bolt assembly includes a first bolt hole (11), a threaded hole (12), and a first fastening bolt (15). The first bolt hole (11) is integrally formed on the side wall of the upper cylinder head cover (1), and the threaded hole (12) is integrally formed on the side wall of the lower cylinder head cover (2). The first fastening bolt (15) passes through the first bolt hole (11) and is threadedly connected to the threaded hole (12).

6. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The second bolt assembly includes a second bolt hole (17), a third bolt hole (18), and a second fastening bolt (16). The second bolt hole (17) is integrally formed on the side wall of the lower cylinder head cover (2), and the third bolt hole (18) is integrally formed on the side wall of the cylinder head (3). The second fastening bolt (16) passes through the second bolt hole (17) and the third bolt hole (18) from top to bottom and is threaded to the engine.

7. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The upper cylinder head cover (1) has reinforcing ribs (13) on its side wall.

8. A multi-functional split-type engine cylinder head cover according to claim 1, characterized in that, The lower cylinder head cover (2) is provided with sealing grooves (14) at both the top and bottom, and the sealing strip (4) is installed in the sealing grooves (14).

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